:root {
  color-scheme: light;
  --ink: #0f172a;
  --ink-soft: #334155;
  --muted: #526175;
  --line: #dbe4ea;
  --line-strong: #c8d7df;
  --surface: #ffffff;
  --surface-soft: #f4f8fa;
  --surface-blue: #eef7fb;
  --primary: #075985;
  --primary-dark: #073b4c;
  --primary-light: #dff3f7;
  --teal: #0f766e;
  --teal-soft: #e3f5f1;
  --orange: #c2410c;
  --orange-soft: #fff1e8;
  --success: #15803d;
  --code: #071c27;
  --shadow-sm: 0 10px 30px rgba(15, 48, 61, .07);
  --shadow-lg: 0 28px 70px rgba(5, 45, 63, .16);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --container: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: "Noto Sans SC", "Microsoft YaHei UI", "PingFang SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
svg { display: block; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
code, pre { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; }

:focus-visible { outline: 3px solid #38bdf8; outline-offset: 3px; }

.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: 100;
  padding: 10px 16px;
  color: #fff;
  background: var(--primary);
  border-radius: 10px;
  transform: translateY(-150%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 12px 0;
  border-bottom: 1px solid rgba(203, 218, 225, .75);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
}

.header-inner { min-height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark {
  width: 44px;
  height: 44px;
  display: inline-grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #0b6070, #073b4c);
  border-radius: 13px;
  box-shadow: 0 8px 20px rgba(7, 59, 76, .19);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .04em;
}
.brand-copy { display: grid; line-height: 1.25; }
.brand-copy strong { font-size: 15px; letter-spacing: .01em; }
.brand-copy small { margin-top: 3px; color: var(--muted); font-size: 12px; }

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 13px;
  color: var(--ink-soft);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: color .2s ease, background-color .2s ease;
}
.site-nav a:hover { color: var(--primary); background: var(--surface-blue); }
.site-nav .nav-docs { margin-left: 6px; padding-inline: 17px; color: #fff; background: var(--primary-dark); }
.site-nav .nav-docs:hover { color: #fff; background: #0b5267; }
.menu-button { display: none; width: 44px; height: 44px; border: 0; border-radius: 10px; color: var(--ink); background: var(--surface-soft); cursor: pointer; }
.menu-button svg { width: 24px; height: 24px; margin: auto; }

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 86px 0 94px;
  background: linear-gradient(180deg, #f7fbfc 0%, #fff 88%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: .4;
  background-image: linear-gradient(rgba(15, 118, 110, .055) 1px, transparent 1px), linear-gradient(90deg, rgba(15, 118, 110, .055) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}
.hero-glow { position: absolute; z-index: -1; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero-glow-one { width: 520px; height: 520px; top: -330px; right: -120px; background: radial-gradient(circle, rgba(56, 189, 248, .2), transparent 67%); }
.hero-glow-two { width: 420px; height: 420px; bottom: -300px; left: -120px; background: radial-gradient(circle, rgba(20, 184, 166, .17), transparent 67%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(410px, .88fr); align-items: center; gap: 74px; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: #315361; font-size: 14px; font-weight: 700; }
.eyebrow span { padding: 5px 10px; color: #075985; background: #dff3fa; border: 1px solid #b9dfec; border-radius: 999px; font-size: 12px; letter-spacing: .05em; }
.hero h1 { max-width: 760px; margin: 22px 0 22px; font-size: clamp(42px, 5.3vw, 68px); line-height: 1.11; letter-spacing: -.045em; }
.hero h1 span { color: #0b7285; }
.hero-lead { max-width: 680px; margin: 0; color: var(--ink-soft); font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 21px; border: 1px solid transparent; border-radius: 12px; font-weight: 700; cursor: pointer; transition: background-color .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease; }
.button svg { width: 18px; height: 18px; }
.button-primary { color: #fff; background: var(--primary); box-shadow: 0 12px 24px rgba(3, 105, 161, .2); }
.button-primary:hover { background: #07517a; box-shadow: 0 14px 30px rgba(3, 105, 161, .25); }
.button-secondary { color: var(--primary-dark); background: #fff; border-color: var(--line-strong); }
.button-secondary:hover { border-color: #77a9b8; background: #f7fbfc; }
.hero-points { display: flex; flex-wrap: wrap; gap: 20px; margin: 28px 0 0; padding: 0; list-style: none; color: #425c67; font-size: 13px; font-weight: 600; }
.hero-points li { display: flex; align-items: center; gap: 7px; }
.hero-points svg { width: 17px; height: 17px; padding: 2px; color: var(--teal); background: var(--teal-soft); border-radius: 50%; }

.connection-card { padding: 28px; background: rgba(255, 255, 255, .94); border: 1px solid #cfe0e7; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.connection-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.section-kicker { display: block; margin-bottom: 8px; color: #0e7490; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.section-kicker.light { color: #67e8f9; }
.connection-heading h2 { margin: 0; font-size: 23px; }
.health-badge { min-height: 32px; display: inline-flex; align-items: center; gap: 8px; padding: 0 11px; color: #536775; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 999px; font-size: 12px; font-weight: 700; white-space: nowrap; }
.health-dot { width: 8px; height: 8px; background: #94a3b8; border-radius: 50%; }
.health-badge.is-up { color: #166534; background: #f0fdf4; border-color: #bbf7d0; }
.health-badge.is-up .health-dot { background: #22c55e; box-shadow: 0 0 0 4px rgba(34, 197, 94, .12); }
.health-badge.is-down { color: #9a3412; background: #fff7ed; border-color: #fed7aa; }
.health-badge.is-down .health-dot { background: #f97316; }
.connection-list { margin: 0; }
.connection-list > div { min-height: 58px; display: grid; grid-template-columns: 112px minmax(0, 1fr) 34px; align-items: center; gap: 10px; border-bottom: 1px solid #edf2f5; }
.connection-list > div:not(:first-child) { grid-template-columns: 112px minmax(0, 1fr); }
.connection-list dt { color: var(--muted); font-size: 13px; }
.connection-list dd { min-width: 0; margin: 0; color: var(--ink); font-size: 14px; font-weight: 700; }
.connection-list code { color: #0e6477; font-size: 12px; overflow-wrap: anywhere; }
.copy-compact { width: 34px; height: 34px; display: grid; place-items: center; border: 0; border-radius: 8px; color: #496773; background: transparent; cursor: pointer; }
.copy-compact:hover { color: var(--primary); background: var(--surface-blue); }
.copy-compact svg { width: 17px; height: 17px; }
.connection-note { display: flex; align-items: flex-start; gap: 11px; margin-top: 20px; padding: 14px; color: #35515c; background: #f0faf8; border: 1px solid #caebe4; border-radius: 14px; }
.connection-note svg { width: 21px; height: 21px; flex: 0 0 auto; margin-top: 2px; color: var(--teal); }
.connection-note p { margin: 0; font-size: 13px; line-height: 1.65; }

.section { padding: 96px 0; }
.section-soft { background: var(--surface-soft); border-block: 1px solid #e5edf1; }
.section-heading { max-width: 720px; margin-bottom: 42px; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.section-heading h2, .support h2 { margin: 0 0 14px; font-size: clamp(30px, 3.5vw, 43px); line-height: 1.2; letter-spacing: -.025em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }

.handoff-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.handoff-card { position: relative; overflow: hidden; padding: 34px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.handoff-card::after { content: ""; position: absolute; width: 180px; height: 180px; top: -105px; right: -75px; border-radius: 50%; background: rgba(14, 116, 144, .06); }
.platform-card { background: linear-gradient(145deg, #f8fcfc, #fff); border-color: #bcdedc; }
.card-label { display: inline-flex; padding: 5px 10px; color: #075985; background: #e5f4fa; border-radius: 999px; font-size: 12px; font-weight: 800; }
.platform-card .card-label { color: #0f766e; background: #e6f6f2; }
.handoff-card h3 { margin: 16px 0 26px; font-size: 25px; }
.check-list, .deliverable-list { display: grid; gap: 17px; margin: 0; padding: 0; list-style: none; }
.check-list li, .deliverable-list li { display: flex; align-items: flex-start; gap: 13px; }
.check-list li > span { width: 30px; height: 30px; display: grid; place-items: center; flex: 0 0 auto; color: #0e7490; background: #edf7fa; border-radius: 9px; font-size: 11px; font-weight: 800; }
.check-list strong, .deliverable-list strong { display: block; margin-bottom: 2px; font-size: 15px; }
.check-list p, .deliverable-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.deliverable-list svg { width: 30px; height: 30px; flex: 0 0 auto; padding: 6px; color: var(--teal); background: var(--teal-soft); border-radius: 9px; }
.tenant-note { margin-top: 24px; padding: 16px 17px; color: #32505a; background: #eef8f6; border-left: 4px solid var(--teal); border-radius: 0 12px 12px 0; }
.tenant-note strong { font-size: 14px; }
.tenant-note p { margin: 3px 0 0; font-size: 13px; }

.timeline { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.timeline-item { min-height: 240px; display: flex; flex-direction: column; justify-content: space-between; padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 18px; transition: border-color .2s ease, box-shadow .2s ease; }
.timeline-item:hover { border-color: #9fc9d3; box-shadow: var(--shadow-sm); }
.timeline-number { width: 46px; height: 46px; display: grid; place-items: center; color: #075985; background: #e8f5f9; border-radius: 14px; font-weight: 800; }
.timeline-owner { display: inline-block; margin-top: 28px; color: #0e7490; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.timeline-item h3 { margin: 5px 0 8px; font-size: 19px; }
.timeline-item p { margin: 0 0 17px; color: var(--muted); font-size: 14px; line-height: 1.65; }
.timeline-item small { color: #355867; font-size: 12px; font-weight: 700; }

.section-code { position: relative; overflow: hidden; color: #e6f2f5; background: var(--code); }
.section-code::before { content: ""; position: absolute; width: 600px; height: 600px; top: -380px; right: -220px; background: radial-gradient(circle, rgba(14, 165, 233, .24), transparent 66%); border-radius: 50%; }
.code-heading { position: relative; max-width: 780px; }
.code-heading h2 { color: #fff; }
.code-heading p { color: #aac0ca; }
.quickstart-grid { position: relative; min-width: 0; display: grid; gap: 22px; }
.code-step { min-width: 0; padding: 26px; background: #0b2733; border: 1px solid #1b4655; border-radius: 19px; }
.code-step header { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.code-step header > span { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; color: #052d3d; background: #67e8f9; border-radius: 11px; font-size: 14px; font-weight: 900; }
.code-step small { display: block; color: #67e8f9; font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.code-step h3 { margin: 1px 0 0; color: #fff; font-size: 18px; }
.code-step > p { margin: 15px 2px 0; color: #a9bec7; font-size: 13px; }
.code-block { position: relative; min-width: 0; max-width: 100%; overflow: hidden; background: #061923; border: 1px solid #173b49; border-radius: 13px; }
.code-block pre { max-width: 100%; overflow: auto; margin: 0; padding: 22px 88px 22px 20px; color: #d7eef5; font-size: 13px; line-height: 1.75; tab-size: 2; }
.copy-button { position: absolute; top: 12px; right: 12px; z-index: 2; min-width: 58px; height: 34px; border: 1px solid #315564; border-radius: 8px; color: #d0e5eb; background: #102f3c; cursor: pointer; font-size: 12px; font-weight: 700; }
.copy-button:hover { color: #fff; border-color: #54a8b8; background: #174150; }
.accepted-sample { min-width: 0; display: grid; grid-template-columns: .7fr 1.3fr; align-items: center; gap: 30px; margin-top: 24px; padding: 26px; background: rgba(15, 118, 110, .13); border: 1px solid rgba(94, 234, 212, .23); border-radius: 18px; }
.accepted-sample > div { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 10px; }
.accepted-sample .response-code { padding: 5px 9px; color: #042f2e; background: #5eead4; border-radius: 8px; font-weight: 900; }
.accepted-sample strong { color: #fff; }
.accepted-sample p { grid-column: 1 / -1; margin: 4px 0 0; color: #a9bec7; font-size: 13px; }
.accepted-sample pre { min-width: 0; max-width: 100%; overflow: auto; margin: 0; color: #d7eef5; font-size: 12px; line-height: 1.65; }

.rule-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.rule-card { padding: 23px; background: #fff; border: 1px solid var(--line); border-radius: 16px; }
.rule-card > span { display: inline-block; color: #0e7490; font-size: 12px; font-weight: 900; }
.rule-card h3 { margin: 14px 0 9px; font-size: 17px; line-height: 1.35; }
.rule-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.sync-order { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 40px; margin-top: 32px; padding: 32px; background: linear-gradient(135deg, #f0f9fa, #f7fbfc); border: 1px solid #cfe4e8; border-radius: var(--radius-md); }
.sync-copy h3 { margin: 0 0 8px; font-size: 23px; }
.sync-copy p { margin: 0; color: var(--muted); font-size: 14px; }
.sync-order ol { display: flex; align-items: stretch; margin: 0; padding: 0; list-style: none; }
.sync-order li { position: relative; flex: 1; padding: 44px 8px 8px; text-align: center; color: #294955; font-size: 12px; font-weight: 700; }
.sync-order li::after { content: ""; position: absolute; width: calc(100% - 38px); height: 2px; top: 17px; left: calc(50% + 19px); background: #b9d5dc; }
.sync-order li:last-child::after { display: none; }
.sync-order li span { position: absolute; top: 0; left: 50%; z-index: 1; width: 36px; height: 36px; display: grid; place-items: center; color: #fff; background: var(--primary); border: 5px solid #eaf6f8; border-radius: 50%; transform: translateX(-50%); font-size: 11px; }

.error-table-wrap { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-sm); }
.error-table { width: 100%; border-collapse: collapse; }
.error-table th, .error-table td { padding: 17px 22px; text-align: left; border-bottom: 1px solid #e7eef2; }
.error-table th { color: #38525d; background: #eef5f7; font-size: 13px; }
.error-table td { color: #465d68; font-size: 14px; }
.error-table tr:last-child td { border-bottom: 0; }
.error-table td:first-child { width: 110px; }
.error-table code { display: inline-block; min-width: 44px; padding: 4px 8px; color: #075985; background: #e8f5f9; border-radius: 7px; text-align: center; font-weight: 800; }

.go-live-grid { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: 72px; }
.go-live-copy h2 { margin: 0 0 16px; font-size: clamp(31px, 3.5vw, 44px); line-height: 1.2; letter-spacing: -.03em; }
.go-live-copy > p { margin: 0 0 24px; color: var(--muted); line-height: 1.8; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--primary); font-weight: 800; }
.text-link svg { width: 17px; height: 17px; transition: transform .2s ease; }
.text-link:hover svg { transform: translateX(3px); }
.go-live-checklist { padding: 32px; color: #ecfeff; background: var(--primary-dark); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); }
.go-live-checklist h3 { margin: 0 0 20px; font-size: 21px; }
.go-live-checklist ul { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.go-live-checklist li { display: flex; align-items: flex-start; gap: 12px; color: #c5dce3; font-size: 14px; }
.go-live-checklist li span { width: 20px; height: 20px; flex: 0 0 auto; margin-top: 2px; background: #5eead4; border: 5px solid #164f5e; border-radius: 50%; }

.resource-section { color: #eaf6f8; background: #0b2f3b; }
.resource-section .section-heading h2 { color: #fff; }
.resource-section .section-heading p { color: #a9c1ca; }
.resource-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.resource-card { min-height: 255px; display: flex; flex-direction: column; padding: 28px; background: #103d4a; border: 1px solid #245463; border-radius: 18px; transition: border-color .2s ease, background-color .2s ease; }
.resource-card:hover { background: #134653; border-color: #4e8898; }
.resource-card > span { color: #67e8f9; font-size: 11px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.resource-card h3 { margin: 16px 0 9px; color: #fff; font-size: 22px; }
.resource-card p { margin: 0; color: #b3c9d1; font-size: 14px; }
.resource-card strong { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; padding-top: 28px; color: #cffafe; font-size: 13px; }
.resource-card svg { width: 16px; height: 16px; }

.support { padding: 58px 0; background: #eff8fa; border-bottom: 1px solid #dce9ed; }
.support-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.support h2 { margin-bottom: 8px; font-size: 27px; }
.support p { max-width: 820px; margin: 0; color: var(--muted); font-size: 14px; }

.site-footer { padding: 34px 0; color: #b9cbd2; background: #071f29; }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 34px; }
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand .brand-mark { width: 39px; height: 39px; color: #082b37; background: #67e8f9; box-shadow: none; }
.footer-brand strong { color: #fff; font-size: 14px; }
.footer-brand p { margin: 1px 0 0; font-size: 11px; }
.footer-links { display: flex; gap: 20px; font-size: 12px; font-weight: 700; }
.footer-links a:hover { color: #fff; }
.copyright { margin: 0; font-size: 12px; }

.toast { position: fixed; right: 24px; bottom: 24px; z-index: 60; max-width: min(360px, calc(100% - 32px)); padding: 11px 16px; color: #fff; background: #0f172a; border-radius: 10px; box-shadow: 0 18px 40px rgba(15, 23, 42, .25); opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .2s ease, transform .2s ease; font-size: 13px; font-weight: 700; }
.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr 420px; gap: 44px; }
  .rule-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .rule-card:nth-child(4), .rule-card:nth-child(5) { grid-column: span 1; }
  .sync-order { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .menu-button { display: grid; place-items: center; }
  .site-nav { position: absolute; top: calc(100% + 1px); left: 16px; right: 16px; display: none; align-items: stretch; flex-direction: column; padding: 10px; background: #fff; border: 1px solid var(--line); border-radius: 0 0 16px 16px; box-shadow: var(--shadow-lg); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding-inline: 14px; }
  .site-nav .nav-docs { margin: 4px 0 0; }
  .hero { padding: 62px 0 72px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-lead { max-width: 720px; }
  .connection-card { max-width: 620px; }
  .handoff-grid, .go-live-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .accepted-sample { grid-template-columns: 1fr; }
  .rule-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .resource-grid { grid-template-columns: 1fr; }
  .resource-card { min-height: 210px; }
  .support-inner { align-items: flex-start; flex-direction: column; }
  .footer-inner { grid-template-columns: 1fr; gap: 22px; }
}

@media (max-width: 600px) {
  html { scroll-padding-top: 78px; }
  body { font-size: 16px; }
  .container { width: min(calc(100% - 24px), var(--container)); }
  .site-header { padding: 8px 0; }
  .brand-mark { width: 40px; height: 40px; }
  .brand-copy strong { font-size: 14px; }
  .brand-copy small { font-size: 11px; }
  .hero { padding: 46px 0 58px; }
  .hero h1 { margin-top: 18px; font-size: 39px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .hero-points { align-items: flex-start; flex-direction: column; gap: 10px; }
  .connection-card, .handoff-card, .go-live-checklist { padding: 22px; border-radius: 19px; }
  .connection-heading { align-items: flex-start; flex-direction: column; }
  .connection-list > div, .connection-list > div:not(:first-child) { grid-template-columns: 1fr auto; gap: 4px 10px; padding: 12px 0; }
  .connection-list dt { grid-column: 1 / -1; }
  .section { padding: 68px 0; }
  .section-heading { margin-bottom: 30px; }
  .section-heading h2, .support h2 { font-size: 29px; }
  .handoff-card h3 { font-size: 22px; }
  .timeline { grid-template-columns: 1fr; }
  .timeline-item { min-height: 220px; }
  .code-step { padding: 17px; }
  .code-block pre { padding: 58px 16px 18px; font-size: 12px; }
  .accepted-sample { padding: 20px; }
  .rule-grid { grid-template-columns: 1fr; }
  .sync-order { padding: 23px 17px; }
  .sync-order ol { align-items: stretch; flex-direction: column; gap: 5px; }
  .sync-order li { min-height: 45px; padding: 9px 10px 9px 54px; text-align: left; }
  .sync-order li::after { width: 2px; height: calc(100% - 26px); top: 35px; left: 22px; }
  .sync-order li span { top: 5px; left: 22px; transform: translateX(-50%); }
  .error-table-wrap { overflow-x: auto; }
  .error-table { min-width: 680px; }
  .go-live-grid { gap: 36px; }
  .support { padding: 46px 0; }
  .footer-links { flex-wrap: wrap; }
  .toast { right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}