/* Design system: institutional infrastructure, deep navy + verified mint. */
:root {
  /* Primitive palette */
  --p-navy-950: oklch(0.16 0.035 278);
  --p-navy-900: oklch(0.205 0.065 267);
  --p-navy-800: oklch(0.28 0.065 267);
  --p-mint-400: oklch(0.89 0.18 155);
  --p-mint-300: oklch(0.93 0.12 155);
  --p-paper: oklch(0.985 0.003 240);
  --p-paper-2: oklch(0.955 0.009 255);
  --p-ink: oklch(0.205 0.065 267);
  --p-slate: oklch(0.49 0.028 255);
  --p-line: oklch(0.88 0.014 255);

  /* Semantic tokens */
  --surface-dark: var(--p-navy-950);
  --surface-deep: var(--p-navy-900);
  --surface-page: var(--p-paper);
  --surface-alt: var(--p-paper-2);
  --text-primary: var(--p-ink);
  --text-secondary: var(--p-slate);
  --text-on-dark: var(--p-paper);
  --accent: var(--p-mint-400);
  --accent-soft: var(--p-mint-300);
  --border: var(--p-line);

  /* Component tokens */
  --button-bg: var(--accent);
  --button-text: var(--surface-deep);
  --card-dark: color-mix(in oklab, var(--surface-deep) 82%, transparent);
  --shadow-lg: 0 28px 80px color-mix(in oklab, var(--surface-deep) 18%, transparent);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 100px;
  --container: 1280px;
  --font-body: "Noto Sans CJK SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  min-width: 0;
  min-height: 100dvh;
  overflow-x: hidden;
  color: var(--text-primary);
  background: var(--surface-page);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.dialog-open { overflow: hidden; }
img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }
button, input, select, textarea { font: inherit; }
button, [role="button"] { cursor: pointer; }
a { color: inherit; text-decoration: none; }
p { max-width: 72ch; }
ul, ol { padding-left: 1.25rem; }
::selection { color: var(--surface-deep); background: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
[hidden] { display: none !important; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.55rem, 5.2vw, 4.9rem); }
h2 { font-size: clamp(2rem, 3.5vw, 3.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.65rem); }
.mono, .data, .metric-value, .product-compute, .phone-number {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.muted { color: var(--text-secondary); }
.accent { color: var(--accent); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 60;
  padding: 10px 18px;
  color: var(--surface-deep);
  background: var(--accent);
  border-radius: var(--radius-pill);
  transform: translateY(-160%);
  transition: transform 160ms ease-out;
}
.skip-link:focus { transform: translateY(0); }
.container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
.narrow { width: min(100% - 40px, 880px); margin-inline: auto; }
.section { padding-block: 104px; }
.section-alt { background: var(--surface-alt); }
.section-dark { color: var(--text-on-dark); background: var(--surface-dark); }
.section-deep { color: var(--text-on-dark); background: var(--surface-deep); }
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 64px;
  align-items: end;
  margin-bottom: 56px;
}
.section-head p { color: var(--text-secondary); line-height: 1.75; }
.section-dark .section-head p, .section-deep .section-head p { color: color-mix(in oklab, var(--text-on-dark) 74%, transparent); }
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.section-label::before { content: ""; width: 28px; height: 1px; background: currentColor; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  color: var(--text-on-dark);
  background: color-mix(in oklab, var(--surface-dark) 94%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 13%, transparent);
  backdrop-filter: blur(16px);
}
.header-inner { min-height: 80px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 48px; flex-shrink: 0; }
.brand-mark { width: 34px; height: 34px; color: var(--accent); }
.brand-name { display: block; font-size: 1.12rem; font-weight: 700; letter-spacing: 0.08em; line-height: 1.2; }
.brand-en { display: block; margin-top: 4px; font-family: var(--font-mono); font-size: 0.63rem; letter-spacing: 0.19em; color: color-mix(in oklab, var(--text-on-dark) 68%, transparent); }
.primary-nav { display: flex; align-items: center; justify-content: center; gap: 4px; margin-left: auto; }
.primary-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  color: color-mix(in oklab, var(--text-on-dark) 78%, transparent);
  font-size: 0.92rem;
  transition: color 160ms ease-out, background-color 160ms ease-out;
}
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--text-on-dark); background: color-mix(in oklab, var(--text-on-dark) 8%, transparent); }
.primary-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: 3px;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-50%);
}
.header-contact { display: flex; align-items: center; gap: 16px; margin-left: 12px; }
.header-phone { font-family: var(--font-mono); font-size: 0.86rem; white-space: nowrap; }
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-left: auto;
  color: var(--text-on-dark);
  background: transparent;
  border: 1px solid color-mix(in oklab, var(--text-on-dark) 24%, transparent);
  border-radius: 50%;
}
.menu-toggle svg { width: 22px; height: 22px; }
.mobile-nav { display: none; }

/* Buttons and links */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 650;
  line-height: 1.25;
  text-align: center;
  transition: transform 140ms ease-out, background-color 180ms ease-out, color 180ms ease-out, border-color 180ms ease-out;
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(0.98); }
.button-primary { color: var(--button-text); background: var(--button-bg); }
.button-primary:hover { background: var(--accent-soft); }
.button-dark { color: var(--text-on-dark); background: var(--surface-deep); }
.button-dark:hover { background: var(--p-navy-800); }
.button-outline { color: var(--text-on-dark); border-color: color-mix(in oklab, var(--text-on-dark) 36%, transparent); background: transparent; }
.button-outline:hover { border-color: var(--accent); color: var(--accent); }
.button-light-outline { color: var(--text-primary); border-color: var(--border); background: transparent; }
.button-light-outline:hover { border-color: var(--surface-deep); }
.button-small { min-height: 44px; padding: 9px 17px; font-size: 0.88rem; }
.button svg, .text-link svg { width: 18px; height: 18px; flex: 0 0 auto; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: var(--text-primary);
  font-weight: 650;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 6px;
}
.text-link:hover svg { transform: translate(2px, -2px); }
.text-link svg { transition: transform 160ms ease-out; }
.section-dark .text-link, .section-deep .text-link, .hero .text-link, .page-hero .text-link { color: var(--text-on-dark); }
.button-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

/* Hero */
.hero { position: relative; color: var(--text-on-dark); background: var(--surface-dark); overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(color-mix(in oklab, var(--accent) 18%, transparent) 0.8px, transparent 0.8px);
  background-size: 24px 24px;
  mask-image: linear-gradient(to right, transparent, black 70%);
  opacity: 0.36;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 64px;
  align-items: center;
  min-height: calc(100dvh - 80px);
  padding-block: 72px 80px;
}
.hero-copy { position: relative; z-index: 2; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  padding: 5px 13px;
  margin-bottom: 28px;
  border: 1px solid color-mix(in oklab, var(--accent) 36%, transparent);
  border-radius: var(--radius-pill);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 5px color-mix(in oklab, var(--accent) 12%, transparent); }
.hero h1 { max-width: 12em; }
.hero h1 em { color: var(--accent); font-style: normal; white-space: nowrap; }
.nowrap { white-space: nowrap; }
.hero-lead { max-width: 40rem; margin-top: 28px; color: color-mix(in oklab, var(--text-on-dark) 80%, transparent); font-size: 1.08rem; line-height: 1.8; }
.hero .button-row { margin-top: 34px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px 24px; padding: 0; margin-top: 28px; list-style: none; color: color-mix(in oklab, var(--text-on-dark) 66%, transparent); font-size: 0.83rem; }
.hero-trust li { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust li::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }

.topology-shell {
  position: relative;
  display: grid;
  min-height: 570px;
  overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--text-on-dark) 17%, transparent);
  border-radius: var(--radius-lg);
  background: var(--card-dark);
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}
.topology-shell > * { grid-area: 1 / 1; }
#network-canvas { width: 100%; height: 100%; min-height: 570px; pointer-events: none; opacity: 0.76; }
.topology-overlay { position: relative; z-index: 2; display: flex; flex-direction: column; padding: 26px; pointer-events: none; }
.topology-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.topology-title { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.12em; color: color-mix(in oklab, var(--text-on-dark) 68%, transparent); }
.topology-status { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font-size: 0.78rem; }
.topology-map { position: relative; flex: 1; min-height: 310px; }
.region-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 8px 13px;
  color: var(--text-on-dark);
  background: color-mix(in oklab, var(--surface-dark) 88%, transparent);
  border: 1px solid color-mix(in oklab, var(--text-on-dark) 24%, transparent);
  border-radius: var(--radius-pill);
  pointer-events: auto;
  font-size: 0.9rem;
  backdrop-filter: blur(8px);
  transition: border-color 180ms ease-out, transform 180ms ease-out;
}
.region-node:hover { border-color: var(--accent); transform: translateY(-3px); }
.region-node small { display: block; color: color-mix(in oklab, var(--text-on-dark) 58%, transparent); font-family: var(--font-mono); font-size: 0.62rem; line-height: 1.1; }
.region-node.beijing { left: 48%; top: 11%; }
.region-node.hebei { left: 13%; top: 34%; }
.region-node.wulanchabu { right: 4%; top: 43%; }
.region-node.jiangsu { left: 38%; top: 66%; }
.node-pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); animation: status-pulse 2s ease-out infinite; }
@keyframes status-pulse { 0%, 100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 35%, transparent); } 50% { box-shadow: 0 0 0 8px transparent; } }
.topology-ledger { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding-top: 20px; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 16%, transparent); }
.topology-ledger span { display: block; color: color-mix(in oklab, var(--text-on-dark) 56%, transparent); font-size: 0.72rem; }
.topology-ledger strong { display: block; margin-top: 4px; font-family: var(--font-mono); font-size: clamp(0.68rem, 1.1vw, 0.88rem); font-weight: 500; white-space: nowrap; }

.line-wipe { display: flex; flex-direction: column; align-items: flex-start; position: relative; z-index: 3; pointer-events: none; background: var(--surface-deep); }
.line-wipe span { display: block; flex: none; background: var(--surface-page); }

.resource-ticker { overflow: hidden; color: var(--text-on-dark); background: var(--surface-deep); border-block: 1px solid color-mix(in oklab, var(--text-on-dark) 12%, transparent); }
.ticker-track { display: flex; width: max-content; animation: ticker 38s linear infinite; }
.resource-ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-group { display: flex; align-items: center; flex-shrink: 0; }
.ticker-group span { display: inline-flex; align-items: center; min-height: 64px; padding-inline: 24px; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; white-space: nowrap; }
.ticker-group span::after { content: "/"; margin-left: 48px; color: var(--accent); }
@keyframes ticker { to { transform: translateX(-50%); } }

/* Decision routes */
.resource-paths { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-block: 1px solid var(--border); }
.resource-path {
  position: relative;
  min-height: 196px;
  padding: 28px 24px;
  border-right: 1px solid var(--border);
  transition: background-color 180ms ease-out;
}
.resource-path:last-child { border-right: 0; }
.resource-path:hover { background: var(--surface-alt); }
.resource-path .mono { color: var(--text-secondary); font-size: 0.7rem; letter-spacing: 0.08em; }
.resource-path h3 { margin-top: 22px; font-family: var(--font-body); font-size: 1.08rem; letter-spacing: 0; }
.resource-path p { margin-top: 8px; color: var(--text-secondary); font-size: 0.86rem; line-height: 1.65; }
.resource-path svg { position: absolute; right: 20px; bottom: 22px; width: 18px; height: 18px; transition: transform 160ms ease-out; }
.resource-path:hover svg { transform: translate(3px, -3px); }

/* Product spotlight + ledger */
.product-spotlight { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); margin-bottom: 56px; overflow: hidden; color: var(--text-on-dark); background: var(--surface-deep); border-radius: var(--radius-lg); }
.spotlight-copy { padding: 48px; }
.spotlight-copy .mono { color: var(--accent); font-size: 0.74rem; letter-spacing: 0.1em; }
.spotlight-copy h3 { margin-top: 16px; font-size: clamp(1.8rem, 3vw, 2.7rem); }
.spotlight-copy > p { margin-top: 16px; color: color-mix(in oklab, var(--text-on-dark) 72%, transparent); }
.spotlight-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 0; margin-block: 30px; list-style: none; }
.spotlight-specs li { border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 20%, transparent); padding-top: 14px; }
.spotlight-specs span { display: block; color: color-mix(in oklab, var(--text-on-dark) 58%, transparent); font-size: 0.74rem; }
.spotlight-specs strong { display: block; margin-top: 4px; font-family: var(--font-mono); font-size: 1rem; font-weight: 500; }
.spotlight-image { position: relative; min-height: 100%; }
.spotlight-image img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.72) contrast(1.06); }
.spotlight-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to right, var(--surface-deep), transparent 55%); }

.filter-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.filter-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-tab {
  min-height: 44px;
  padding: 9px 17px;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: color 160ms ease-out, background-color 160ms ease-out, border-color 160ms ease-out;
}
.filter-tab:hover { color: var(--text-primary); border-color: var(--text-primary); }
.filter-tab[aria-pressed="true"] { color: var(--text-on-dark); background: var(--surface-deep); border-color: var(--surface-deep); }
.product-count { color: var(--text-secondary); font-size: 0.84rem; }
.product-ledger { border-top: 1px solid var(--text-primary); }
.product-ledger-head, .product-row {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1.25fr) minmax(0, 0.9fr) minmax(0, 0.72fr) auto;
  gap: 24px;
  align-items: center;
}
.product-ledger-head { min-height: 50px; color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; }
.product-row { padding-block: 24px; border-top: 1px solid var(--border); transition: background-color 160ms ease-out; }
.product-row:hover { background: color-mix(in oklab, var(--surface-alt) 68%, transparent); }
.product-name { font-family: var(--font-mono); font-size: 1rem; font-weight: 650; }
.product-use { display: block; margin-top: 5px; color: var(--text-secondary); font-size: 0.8rem; }
.product-spec { font-size: 0.88rem; line-height: 1.55; }
.product-compute { font-size: 0.92rem; }
.product-compute small, .product-term small { display: block; color: var(--text-secondary); font-family: var(--font-body); font-size: 0.72rem; }
.product-term { font-size: 0.84rem; }
.product-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; }
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  transition: border-color 160ms ease-out, background-color 160ms ease-out;
}
.icon-button:hover { border-color: var(--surface-deep); background: var(--surface-alt); }
.icon-button svg { width: 18px; height: 18px; }
.ledger-footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 24px; border-top: 1px solid var(--border); }
.ledger-footer p { color: var(--text-secondary); font-size: 0.82rem; }
.empty-products { padding: 40px 0; color: var(--text-secondary); }

/* Forms / quote builder */
.quote-section { position: relative; overflow: hidden; }
.quote-section::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -160px;
  top: 80px;
  border: 1px solid color-mix(in oklab, var(--accent) 20%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 0 60px color-mix(in oklab, var(--accent) 3%, transparent), 0 0 0 120px color-mix(in oklab, var(--accent) 2%, transparent);
  pointer-events: none;
}
.quote-grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 80px; align-items: start; }
.quote-intro { position: sticky; top: 120px; }
.quote-intro p { margin-top: 24px; color: color-mix(in oklab, var(--text-on-dark) 72%, transparent); }
.quote-steps { padding: 0; margin-top: 32px; list-style: none; }
.quote-steps li { display: flex; gap: 14px; padding-block: 14px; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 14%, transparent); }
.quote-steps .mono { color: var(--accent); font-size: 0.75rem; }
.quote-form { padding: 36px; color: var(--text-primary); background: var(--surface-page); border-radius: var(--radius-lg); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 18px; }
.field { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.field-full { grid-column: 1 / -1; }
.field label, .field-label { font-size: 0.84rem; font-weight: 650; }
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 13px;
  color: var(--text-primary);
  background: var(--surface-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 160ms ease-out, box-shadow 160ms ease-out;
}
.field textarea { min-height: 100px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--surface-deep); box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 38%, transparent); outline: 0; }
.field-hint { color: var(--text-secondary); font-size: 0.75rem; }
.quote-form .button-row { margin-top: 24px; }
.form-note { margin-top: 14px; color: var(--text-secondary); font-size: 0.76rem; }
.quote-result { padding: 28px; margin-top: 24px; color: var(--text-on-dark); background: var(--surface-deep); border-radius: var(--radius-md); }
.quote-result h3 { font-family: var(--font-body); font-size: 1.05rem; letter-spacing: 0; }
.quote-summary { max-height: 260px; overflow: auto; padding: 18px; margin-block: 16px; color: color-mix(in oklab, var(--text-on-dark) 84%, transparent); background: color-mix(in oklab, var(--surface-dark) 72%, transparent); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.8rem; line-height: 1.8; white-space: pre-wrap; overflow-wrap: anywhere; }

/* POC */
.poc-layout { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 80px; }
.poc-sticky { position: sticky; top: 120px; align-self: start; }
.poc-sticky p { margin-top: 24px; color: color-mix(in oklab, var(--text-on-dark) 72%, transparent); }
.poc-sticky .button-row { margin-top: 30px; }
.poc-process { border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 25%, transparent); }
.poc-step { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding-block: 28px; border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 15%, transparent); }
.poc-step .mono { color: var(--accent); font-size: 0.78rem; }
.poc-step h3 { font-family: var(--font-body); font-size: 1.1rem; letter-spacing: 0; }
.poc-step p { margin-top: 8px; color: color-mix(in oklab, var(--text-on-dark) 68%, transparent); font-size: 0.9rem; }
.poc-deliverables { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 32px; background: color-mix(in oklab, var(--text-on-dark) 15%, transparent); border: 1px solid color-mix(in oklab, var(--text-on-dark) 15%, transparent); }
.poc-deliverables div { padding: 22px; background: var(--surface-dark); }
.poc-deliverables strong { display: block; font-size: 0.92rem; }
.poc-deliverables span { display: block; margin-top: 6px; color: color-mix(in oklab, var(--text-on-dark) 60%, transparent); font-size: 0.78rem; }

/* Scenarios */
.scenario-browser { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 48px; }
.scenario-tabs { border-top: 1px solid var(--text-primary); }
.scenario-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  min-height: 58px;
  padding: 14px 4px;
  color: var(--text-secondary);
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border);
  transition: color 160ms ease-out, padding 160ms ease-out;
}
.scenario-tab:hover { color: var(--text-primary); padding-left: 10px; }
.scenario-tab[aria-selected="true"] { color: var(--text-primary); font-weight: 700; }
.scenario-tab[aria-selected="true"]::after { content: "→"; color: var(--surface-deep); font-family: var(--font-mono); }
.scenario-panel { min-width: 0; }
.scenario-panel-inner { padding: 36px; background: var(--surface-alt); border-radius: var(--radius-lg); }
.scenario-panel h3 { font-size: clamp(1.7rem, 3vw, 2.45rem); }
.scenario-panel .scenario-desc { margin-top: 16px; color: var(--text-secondary); }
.scenario-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-block: 28px; }
.scenario-meta div { padding-top: 14px; border-top: 1px solid var(--border); }
.scenario-meta span { display: block; color: var(--text-secondary); font-size: 0.75rem; }
.scenario-meta strong { display: block; margin-top: 6px; font-size: 0.92rem; }
.check-list { padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 22px; margin-top: 9px; }
.check-list li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 8px; height: 4px; border-left: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(-45deg); }

/* Regions */
.region-browser { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 0; overflow: hidden; background: var(--surface-deep); border-radius: var(--radius-lg); }
.region-visual { position: relative; min-height: 560px; }
.region-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(0.62) brightness(0.72); }
.region-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, color-mix(in oklab, var(--surface-deep) 88%, transparent), transparent 70%); }
.region-visual-caption { position: absolute; z-index: 2; left: 32px; right: 32px; bottom: 30px; color: var(--text-on-dark); }
.region-visual-caption .mono { color: var(--accent); font-size: 0.74rem; }
.region-visual-caption p { margin-top: 8px; font-size: 0.86rem; }
.region-content { padding: 36px; color: var(--text-on-dark); }
.region-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-bottom: 32px; }
.region-tab { min-height: 44px; padding: 8px; color: color-mix(in oklab, var(--text-on-dark) 64%, transparent); background: transparent; border: 1px solid color-mix(in oklab, var(--text-on-dark) 18%, transparent); border-radius: var(--radius-pill); }
.region-tab[aria-selected="true"] { color: var(--surface-deep); background: var(--accent); border-color: var(--accent); }
.region-panel h3 { font-size: 2rem; }
.region-panel > p { margin-top: 14px; color: color-mix(in oklab, var(--text-on-dark) 70%, transparent); }
.region-facts { padding: 0; margin-block: 24px; list-style: none; }
.region-facts li { padding-block: 12px; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 15%, transparent); font-size: 0.88rem; }
.region-facts span { display: block; color: color-mix(in oklab, var(--text-on-dark) 52%, transparent); font-size: 0.72rem; }

/* Service scope */
.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.service-item { padding-top: 22px; border-top: 1px solid var(--text-primary); }
.service-item .mono { color: var(--text-secondary); font-size: 0.7rem; }
.service-item h3 { margin-top: 24px; font-family: var(--font-body); font-size: 1.06rem; letter-spacing: 0; }
.service-item p { margin-top: 10px; color: var(--text-secondary); font-size: 0.86rem; }

/* Tables */
.table-scroll { width: 100%; overflow-x: auto; border-top: 1px solid var(--text-primary); }
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
.spec-table th, .spec-table td { padding: 16px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.spec-table th { color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.05em; white-space: nowrap; }
.spec-table td:first-child { font-family: var(--font-mono); font-weight: 650; white-space: nowrap; }
.spec-table tbody tr:hover { background: var(--surface-alt); }
.table-note { margin-top: 14px; color: var(--text-secondary); font-size: 0.78rem; }

/* Editorial page components */
.page-hero { position: relative; overflow: hidden; color: var(--text-on-dark); background: var(--surface-dark); }
.page-hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(color-mix(in oklab, var(--text-on-dark) 4%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in oklab, var(--text-on-dark) 4%, transparent) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to right, transparent, black); }
.page-hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: 64px; align-items: end; min-height: 520px; padding-block: 72px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; color: color-mix(in oklab, var(--text-on-dark) 60%, transparent); font-size: 0.8rem; }
.breadcrumbs a { min-height: 32px; }
.breadcrumbs a:hover { color: var(--accent); }
.page-hero h1 { max-width: 13ch; font-size: clamp(2.5rem, 4.8vw, 4.4rem); }
.page-hero .hero-lead { max-width: 46rem; }
.page-hero-aside { padding-top: 24px; border-top: 1px solid color-mix(in oklab, var(--accent) 50%, transparent); }
.page-hero-aside .mono { color: var(--accent); font-size: 0.74rem; }
.page-hero-aside p { margin-top: 12px; color: color-mix(in oklab, var(--text-on-dark) 70%, transparent); font-size: 0.9rem; }
.page-hero-aside .button-row { margin-top: 24px; }
.editorial-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 80px; align-items: start; }
.editorial-grid.reverse { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.editorial-copy h2 { margin-bottom: 24px; }
.editorial-copy p + p { margin-top: 16px; }
.editorial-copy p { color: var(--text-secondary); }
.editorial-list { border-top: 1px solid var(--text-primary); }
.editorial-list-item { display: grid; grid-template-columns: 38px 1fr; gap: 18px; padding-block: 24px; border-bottom: 1px solid var(--border); }
.editorial-list-item .mono { color: var(--text-secondary); font-size: 0.72rem; }
.editorial-list-item h3 { font-family: var(--font-body); font-size: 1.04rem; letter-spacing: 0; }
.editorial-list-item p { margin-top: 7px; color: var(--text-secondary); font-size: 0.88rem; }
.image-panel { position: relative; overflow: hidden; border-radius: var(--radius-lg); }
.image-panel img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; }
.image-panel-caption { position: absolute; left: 20px; right: 20px; bottom: 20px; padding: 18px; color: var(--text-on-dark); background: color-mix(in oklab, var(--surface-deep) 90%, transparent); border-radius: var(--radius-md); backdrop-filter: blur(10px); }
.image-panel-caption .mono { color: var(--accent); font-size: 0.7rem; }
.image-panel-caption p { margin-top: 4px; font-size: 0.82rem; }
.metric-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--border); }
.metric-item { padding: 28px; border-right: 1px solid var(--border); }
.metric-item:last-child { border-right: 0; }
.metric-value { display: block; font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 650; line-height: 1.2; }
.metric-item p { margin-top: 10px; color: var(--text-secondary); font-size: 0.84rem; }
.keyword-links { display: flex; flex-wrap: wrap; gap: 10px; }
.keyword-links a { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 15px; border: 1px solid var(--border); border-radius: var(--radius-pill); font-size: 0.82rem; transition: border-color 160ms ease-out, background-color 160ms ease-out; }
.keyword-links a:hover { border-color: var(--surface-deep); background: var(--surface-alt); }

/* FAQ */
.faq-list { border-top: 1px solid var(--text-primary); }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list summary { position: relative; min-height: 70px; padding: 22px 48px 22px 0; font-weight: 650; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 8px; top: 18px; font-family: var(--font-mono); font-size: 1.35rem; font-weight: 400; transition: transform 180ms ease-out; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 48px 24px 0; color: var(--text-secondary); }
.faq-answer p + p { margin-top: 12px; }

/* Contact + footer */
.contact-section { color: var(--text-on-dark); background: var(--surface-deep); }
.contact-head { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 64px; align-items: end; padding-bottom: 48px; border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 17%, transparent); }
.contact-head p { color: color-mix(in oklab, var(--text-on-dark) 68%, transparent); }
.contact-phones { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; padding-block: 44px; }
.contact-phone { min-width: 0; }
.contact-phone .mono { color: var(--accent); font-size: 0.72rem; letter-spacing: 0.08em; }
.phone-line { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 12px; }
.phone-number { font-size: clamp(1.4rem, 3vw, 2.35rem); font-weight: 600; letter-spacing: -0.04em; overflow-wrap: anywhere; }
.copy-button { min-height: 44px; padding: 8px 14px; color: color-mix(in oklab, var(--text-on-dark) 72%, transparent); background: transparent; border: 1px solid color-mix(in oklab, var(--text-on-dark) 22%, transparent); border-radius: var(--radius-pill); font-size: 0.76rem; }
.copy-button:hover { color: var(--accent); border-color: var(--accent); }
.contact-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding-top: 28px; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 17%, transparent); }
.contact-bottom p { color: color-mix(in oklab, var(--text-on-dark) 62%, transparent); font-size: 0.84rem; }
.site-footer { padding-block: 52px 32px; color: color-mix(in oklab, var(--text-on-dark) 66%, transparent); background: var(--surface-dark); font-size: 0.8rem; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 64px; }
.footer-brand p { margin-top: 18px; max-width: 32rem; }
.footer-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.footer-nav strong { display: block; margin-bottom: 12px; color: var(--text-on-dark); font-size: 0.82rem; }
.footer-nav a { display: inline-flex; min-height: 34px; align-items: center; margin-right: 12px; transition: color 160ms ease-out; }
.footer-nav a:hover { color: var(--accent); }
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-top: 28px; margin-top: 36px; border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 12%, transparent); }
.footer-legal a { min-height: 40px; display: inline-flex; align-items: center; text-decoration: underline; text-underline-offset: 4px; }
.footer-legal a:hover { color: var(--accent); }
.trademark-note { margin-top: 18px; font-size: 0.72rem; color: color-mix(in oklab, var(--text-on-dark) 48%, transparent); }

/* Dialog + feedback */
.product-dialog {
  width: min(calc(100% - 32px), 800px);
  max-height: min(86dvh, 820px);
  padding: 0;
  overflow: auto;
  color: var(--text-primary);
  background: var(--surface-page);
  border: 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.product-dialog::backdrop { background: color-mix(in oklab, var(--surface-dark) 76%, transparent); backdrop-filter: blur(5px); }
.product-dialog[open] { animation: dialog-in 180ms cubic-bezier(0.23, 1, 0.32, 1); }
@keyframes dialog-in { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
.dialog-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; padding: 28px; background: var(--surface-page); border-bottom: 1px solid var(--border); }
.dialog-head h2 { font-family: var(--font-mono); font-size: 1.35rem; letter-spacing: -0.02em; }
.dialog-head p { margin-top: 4px; color: var(--text-secondary); font-size: 0.8rem; }
.dialog-body { padding: 28px; }
.dialog-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; }
.dialog-spec { padding-block: 15px; border-bottom: 1px solid var(--border); }
.dialog-spec span { display: block; color: var(--text-secondary); font-size: 0.72rem; }
.dialog-spec strong { display: block; margin-top: 4px; font-size: 0.88rem; font-weight: 600; overflow-wrap: anywhere; }
.dialog-note { margin-block: 20px; color: var(--text-secondary); font-size: 0.78rem; }
.toast {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: calc(28px + env(safe-area-inset-bottom));
  max-width: calc(100% - 32px);
  padding: 12px 20px;
  color: var(--text-on-dark);
  background: var(--surface-deep);
  border: 1px solid color-mix(in oklab, var(--accent) 40%, transparent);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 180ms ease-out, transform 180ms ease-out;
  font-size: 0.84rem;
}
.toast.visible { opacity: 1; transform: translate(-50%, 0); }
.mobile-cta { display: none; }

@media (max-width: 1100px) {
  .header-contact .header-phone { display: none; }
  .primary-nav a { padding-inline: 10px; }
  .hero-grid { gap: 36px; }
  .topology-shell { min-height: 520px; }
  #network-canvas { min-height: 520px; }
  .product-ledger-head, .product-row { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 0.8fr) auto; }
  .product-ledger-head > :nth-child(4), .product-row .product-term { display: none; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 76px; }
  .container, .narrow { width: min(100% - 32px, var(--container)); }
  .section { padding-block: 80px; }
  .section-head, .contact-head { grid-template-columns: 1fr; gap: 24px; }
  .section-head { margin-bottom: 40px; }
  .header-inner { min-height: 72px; }
  .primary-nav, .header-contact { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: block;
    padding: 12px 16px 20px;
    background: var(--surface-dark);
    border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 16%, transparent);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px) scale(0.98);
    transform-origin: top;
    transition: opacity 180ms ease-out, transform 180ms ease-out;
  }
  .mobile-nav.open { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }
  .mobile-nav a { display: flex; align-items: center; min-height: 50px; padding: 10px 12px; border-bottom: 1px solid color-mix(in oklab, var(--text-on-dark) 10%, transparent); }
  .mobile-nav .button { margin-top: 12px; border-bottom: 0; }
  .hero-grid { grid-template-columns: 1fr; min-height: auto; padding-block: 64px; }
  .hero h1 { max-width: 100%; }
  .hero-lead { max-width: 46rem; }
  .topology-shell { min-height: 500px; }
  #network-canvas { min-height: 500px; }
  .resource-paths { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .resource-path:nth-child(3) { border-right: 0; }
  .resource-path:nth-child(n+4) { border-top: 1px solid var(--border); }
  .product-spotlight { grid-template-columns: 1fr; }
  .spotlight-image { min-height: 300px; grid-row: 1; }
  .spotlight-image::after { background: linear-gradient(to top, var(--surface-deep), transparent 55%); }
  .product-ledger-head { display: none; }
  .product-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; padding: 24px 12px; }
  .product-row > :first-child { grid-column: 1 / -1; }
  .product-row .product-term { display: block; }
  .product-actions { grid-column: 1 / -1; justify-content: flex-start; }
  .quote-grid, .poc-layout, .editorial-grid, .editorial-grid.reverse { grid-template-columns: 1fr; gap: 48px; }
  .quote-intro, .poc-sticky { position: static; }
  .scenario-browser { grid-template-columns: 1fr; gap: 32px; }
  .scenario-tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; border-top: 0; }
  .scenario-tab { flex: 0 0 auto; width: auto; min-height: 44px; padding: 8px 14px; border: 1px solid var(--border); border-radius: var(--radius-pill); }
  .scenario-tab[aria-selected="true"] { color: var(--text-on-dark); background: var(--surface-deep); border-color: var(--surface-deep); }
  .scenario-tab[aria-selected="true"]::after { content: none; }
  .region-browser { grid-template-columns: 1fr; }
  .region-visual { min-height: 380px; }
  .page-hero-grid { grid-template-columns: 1fr; gap: 40px; min-height: auto; padding-block: 64px; }
  .page-hero h1 { max-width: 16ch; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 600px) {
  body { padding-bottom: calc(70px + env(safe-area-inset-bottom)); }
  .container, .narrow { width: min(100% - 28px, var(--container)); }
  .section { padding-block: 64px; }
  h1 { font-size: clamp(2.35rem, 12vw, 3.15rem); }
  h2 { font-size: clamp(1.85rem, 9vw, 2.35rem); }
  .brand-name { font-size: 1rem; }
  .brand-en { font-size: 0.58rem; }
  .hero-grid { padding-block: 48px 56px; }
  .hero-kicker { margin-bottom: 22px; font-size: 0.7rem; }
  .hero h1 { max-width: 100%; }
  .hero-lead { margin-top: 22px; font-size: 1rem; }
  .hero .button-row { align-items: stretch; }
  .hero .button { flex: 1 1 100%; }
  .hero-trust { display: grid; grid-template-columns: 1fr; gap: 8px; }
  .topology-shell { min-height: 450px; border-radius: var(--radius-md); }
  #network-canvas { min-height: 450px; }
  .topology-overlay { padding: 20px; }
  .topology-title { max-width: 18ch; }
  .topology-map { min-height: 260px; }
  .region-node { min-height: 44px; padding: 7px 10px; font-size: 0.78rem; }
  .region-node small { display: none; }
  .region-node.beijing { left: 42%; top: 12%; }
  .region-node.hebei { left: 2%; top: 38%; }
  .region-node.wulanchabu { right: 0; top: 45%; }
  .region-node.jiangsu { left: 32%; top: 70%; }
  .topology-ledger { gap: 8px; }
  .topology-ledger strong { font-size: 0.72rem; }
  .topology-ledger span { font-size: 0.65rem; }
  .ticker-group span { min-height: 56px; padding-inline: 16px; }
  .resource-paths { grid-template-columns: 1fr; }
  .resource-path { min-height: 152px; border-right: 0; border-top: 1px solid var(--border); }
  .resource-path:first-child { border-top: 0; }
  .resource-path:nth-child(n+4) { border-top: 1px solid var(--border); }
  .spotlight-copy { padding: 28px 22px; }
  .spotlight-image { min-height: 240px; }
  .spotlight-specs { grid-template-columns: 1fr; gap: 12px; }
  .filter-bar { align-items: flex-start; }
  .filter-tabs { flex-wrap: nowrap; width: 100%; overflow-x: auto; padding-bottom: 6px; }
  .filter-tab { flex: 0 0 auto; }
  .product-row { grid-template-columns: 1fr; }
  .product-row > * { grid-column: 1 !important; }
  .product-actions { flex-wrap: wrap; }
  .ledger-footer { align-items: flex-start; flex-direction: column; }
  .quote-form { padding: 24px 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .field-full { grid-column: auto; }
  .quote-form .button { width: 100%; }
  .quote-result { padding: 22px 16px; }
  .poc-step { grid-template-columns: 40px 1fr; gap: 12px; }
  .poc-deliverables { grid-template-columns: 1fr; }
  .scenario-panel-inner { padding: 26px 20px; }
  .scenario-meta { grid-template-columns: 1fr; gap: 16px; }
  .region-visual { min-height: 300px; }
  .region-visual-caption { left: 20px; right: 20px; bottom: 20px; }
  .region-content { padding: 26px 20px; }
  .region-tabs { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: 1fr; gap: 28px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric-item { border-right: 0; border-bottom: 1px solid var(--border); }
  .metric-item:last-child { border-bottom: 0; }
  .contact-phones { grid-template-columns: 1fr; gap: 32px; }
  .phone-number { font-size: clamp(1.4rem, 7vw, 1.9rem); }
  .contact-bottom { align-items: flex-start; flex-direction: column; }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-legal { align-items: flex-start; flex-direction: column; }
  .dialog-head, .dialog-body { padding: 22px 18px; }
  .dialog-specs { grid-template-columns: 1fr; }
  .table-scroll { -webkit-overflow-scrolling: touch; scrollbar-color: var(--p-slate) var(--surface-alt); }
  .spec-table { min-width: 42rem; }
  .spec-table th, .spec-table td { padding: 14px 12px; }
  .mobile-cta {
    position: fixed;
    z-index: 20;
    left: 0;
    right: 0;
    bottom: 0;
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 8px;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    background: color-mix(in oklab, var(--surface-dark) 96%, transparent);
    border-top: 1px solid color-mix(in oklab, var(--text-on-dark) 16%, transparent);
    backdrop-filter: blur(14px);
  }
  .mobile-cta .button { min-height: 46px; padding: 10px 14px; font-size: 0.86rem; }
  .toast { bottom: calc(88px + env(safe-area-inset-bottom)); }
  .line-wipe { display: none; }
}

@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; }
  .ticker-track { animation: none; }
  .ticker-group[aria-hidden="true"] { display: none; }
}