:root {
  --ink: #122032;
  --muted: #5f6d7c;
  --line: #d9e2ec;
  --paper: #ffffff;
  --mist: #f3f8fb;
  --blue: #176bff;
  --cyan: #16a7b8;
  --green: #1d9a70;
  --amber: #f2a12b;
  --deep: #081827;
  --shadow: 0 18px 45px rgba(18, 32, 50, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 72px;
  padding: 0 5vw;
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid rgba(217, 226, 236, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 170px;
  padding-left: 14px;
  border-left: 3px solid var(--blue);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  line-height: 1.1;
  letter-spacing: 0;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  margin-top: 3px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #304255;
  font-size: 15px;
}

.main-nav a:hover,
.footer-links a:hover {
  color: var(--blue);
}

.menu-toggle {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.header-action,
.button,
.item-actions a,
.plan a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  font-weight: 700;
}

.header-action {
  min-width: 112px;
  padding: 0 18px;
  color: #fff;
  background: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  min-height: calc(100vh - 72px);
  overflow: hidden;
  background: #eaf5fb;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.82) 42%, rgba(255,255,255,0.26) 76%),
    linear-gradient(180deg, rgba(255,255,255,0) 70%, #fff 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  align-self: center;
  width: min(720px, 90vw);
  margin-left: 5vw;
  padding: 72px 0 96px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 680px;
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 74px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 30px;
  color: #3c4d61;
  font-size: 20px;
}

.hero-actions,
.item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-width: 150px;
  padding: 0 22px;
}

.button-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(23, 107, 255, 0.22);
}

.button-secondary {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 590px;
  margin: 42px 0 0;
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: 16px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(217, 226, 236, 0.95);
  border-radius: 8px;
}

.hero-stats dt {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.hero-stats dd {
  position: relative;
  z-index: 1;
  margin: 4px 0 0;
  font-size: 21px;
  font-weight: 800;
}

.uptime-card {
  isolation: isolate;
  color: #fff;
  background:
    radial-gradient(circle at 78% 18%, rgba(255, 255, 255, 0.42), transparent 24%),
    linear-gradient(135deg, rgba(238, 45, 58, 0.96), rgba(160, 20, 34, 0.92) 54%, rgba(45, 8, 20, 0.92));
  border-color: rgba(255, 255, 255, 0.56);
  box-shadow:
    0 18px 44px rgba(211, 31, 47, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.14);
}

.uptime-card::before {
  content: "";
  position: absolute;
  inset: -48%;
  z-index: -1;
  background: conic-gradient(from 90deg, transparent, rgba(255, 255, 255, 0.7), transparent 30%);
  animation: uptime-spin 5.5s linear infinite;
}

.uptime-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  z-index: -1;
  border-radius: 7px;
  background:
    linear-gradient(135deg, rgba(255, 115, 89, 0.96), rgba(206, 26, 48, 0.96) 55%, rgba(72, 10, 28, 0.96)),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.08) 0, rgba(255,255,255,0.08) 1px, transparent 1px, transparent 8px);
}

.uptime-card dt {
  color: rgba(255, 255, 255, 0.86);
  font-weight: 800;
}

.uptime-card dd {
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: #fff;
  text-shadow: 0 0 18px rgba(255, 255, 255, 0.34);
}

.uptime-number {
  font-size: 34px;
  line-height: 1;
  font-weight: 900;
}

.uptime-unit {
  font-size: 16px;
  font-weight: 800;
}

.live-dot {
  position: relative;
  width: 9px;
  height: 9px;
  flex: 0 0 9px;
  border-radius: 999px;
  background: #42f58d;
  box-shadow: 0 0 14px rgba(66, 245, 141, 0.95);
}

.live-dot::after {
  content: "";
  position: absolute;
  inset: -7px;
  border: 1px solid rgba(66, 245, 141, 0.62);
  border-radius: inherit;
  animation: uptime-pulse 1.8s ease-out infinite;
}

.uptime-scan {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 12%, rgba(255, 255, 255, 0.38) 44%, transparent 70%);
  transform: translateX(-110%);
  animation: uptime-scan 3.2s ease-in-out infinite;
}

.uptime-orbit {
  position: absolute;
  right: -18px;
  top: -18px;
  width: 68px;
  height: 68px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
}

.uptime-orbit::before {
  content: "";
  position: absolute;
  right: 8px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.88);
  animation: uptime-blink 1.25s ease-in-out infinite;
}

@keyframes uptime-spin {
  to {
    transform: rotate(1turn);
  }
}

@keyframes uptime-pulse {
  0% {
    opacity: 0.9;
    transform: scale(0.4);
  }
  100% {
    opacity: 0;
    transform: scale(1.7);
  }
}

@keyframes uptime-scan {
  0%, 34% {
    transform: translateX(-110%);
  }
  78%, 100% {
    transform: translateX(110%);
  }
}

@keyframes uptime-blink {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.72);
  }
}

@media (prefers-reduced-motion: reduce) {
  .uptime-card::before,
  .live-dot::after,
  .uptime-scan,
  .uptime-orbit::before,
  .map-routes path,
  .node-halo,
  .map-sweep {
    animation: none;
  }
}

.section {
  padding: 92px 5vw;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-heading p {
  color: var(--muted);
  font-size: 18px;
}

.intro {
  background: #fff;
}

.feature-grid,
.download-grid,
.plan-grid,
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature,
.download-item,
.plan,
figure,
details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.feature {
  padding: 28px;
}

.feature-number {
  color: var(--amber);
  font-size: 13px;
  font-weight: 900;
}

.feature p,
.download-item p,
.plan p,
figure,
details p,
.coverage-copy p {
  color: var(--muted);
}

.download-band,
.guide,
.faq {
  background: var(--mist);
}

.download-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.download-item,
.plan {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  padding: 26px;
}

.download-item p,
.plan p {
  flex: 1;
}

.item-actions a {
  min-width: 112px;
  padding: 0 14px;
  color: var(--blue);
  background: #eef4ff;
}

.plans {
  background: #fff;
}

.price {
  margin: 8px 0 14px;
  color: var(--ink);
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
}

.price span {
  color: var(--muted);
  font-size: 16px;
  font-weight: 600;
}

.plan.emphasized {
  border-color: rgba(29, 154, 112, 0.45);
  box-shadow: var(--shadow);
}

.plan a {
  width: 100%;
  color: #fff;
  background: var(--ink);
}

.plan.emphasized a {
  background: var(--green);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  min-height: 180px;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 22px;
  color: #fff;
  font-weight: 800;
  background: var(--cyan);
  border-radius: 8px;
}

.steps strong,
.steps span {
  display: block;
}

.steps span {
  margin-top: 8px;
  color: var(--muted);
}

.articles {
  background: #fff;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-card {
  display: flex;
  flex-direction: column;
  min-height: 240px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 32, 50, 0.07);
}

.article-card span {
  width: fit-content;
  margin-bottom: 16px;
  padding: 5px 10px;
  color: #b42333;
  font-size: 13px;
  font-weight: 800;
  border-radius: 999px;
  background: #fff0f1;
}

.article-card h3 {
  font-size: 21px;
}

.article-card a:hover {
  color: var(--blue);
}

.article-card p {
  color: var(--muted);
  margin-bottom: 0;
}

.article-page {
  background:
    linear-gradient(180deg, #fff7f6 0, #ffffff 340px);
}

.article-main {
  width: min(880px, 90vw);
  margin: 0 auto;
  padding: 86px 0 96px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
  color: #b42333;
  font-size: 14px;
  font-weight: 800;
}

.article-main h1 {
  max-width: 820px;
  font-size: clamp(34px, 5vw, 58px);
}

.article-summary {
  max-width: 760px;
  color: #3c4d61;
  font-size: 20px;
}

.article-body {
  margin-top: 44px;
  color: #27384c;
  font-size: 18px;
}

.article-body h2 {
  margin-top: 42px;
  font-size: 30px;
}

.article-body p,
.article-body li {
  color: #3f5064;
}

.article-body ul,
.article-body ol {
  padding-left: 24px;
}

.article-body li + li {
  margin-top: 8px;
}

.article-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 42px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.article-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  color: #fff;
  font-weight: 800;
  border-radius: 8px;
  background: var(--ink);
}

.article-cta a.secondary {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
}

.reviews {
  background: #fff;
}

figure {
  min-height: 180px;
  margin: 0;
  padding: 28px;
}

blockquote {
  margin: 0;
  color: #26384b;
  font-size: 18px;
}

figcaption {
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
}

.coverage {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 42px;
  align-items: center;
  color: #fff;
  background: var(--deep);
}

.coverage-copy p {
  color: rgba(255, 255, 255, 0.76);
}

.map-panel {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background:
    radial-gradient(circle at 72% 38%, rgba(255, 76, 63, 0.25), transparent 27%),
    radial-gradient(circle at 26% 70%, rgba(22, 167, 184, 0.2), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.map-panel::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 8px;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.12), transparent 2px) 0 0 / 34px 34px,
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px) 0 0 / 100% 46px,
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px) 0 0 / 46px 100%;
  opacity: 0.48;
}

.world-map {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  aspect-ratio: 900 / 460;
  min-height: 300px;
}

.map-grid path {
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 1;
}

.map-land path {
  fill: rgba(223, 247, 255, 0.13);
  stroke: rgba(223, 247, 255, 0.2);
  stroke-width: 1.4;
}

.map-routes path {
  stroke: rgba(255, 120, 92, 0.88);
  stroke-width: 2.3;
  stroke-linecap: round;
  stroke-dasharray: 12 18;
  animation: map-route-flow 2.8s linear infinite;
}

.map-routes path:nth-child(2n) {
  stroke: rgba(72, 234, 190, 0.74);
  animation-duration: 3.4s;
}

.map-routes path:nth-child(3n) {
  animation-duration: 4s;
}

.node text {
  fill: rgba(255, 255, 255, 0.88);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
  paint-order: stroke;
  stroke: rgba(8, 24, 39, 0.72);
  stroke-width: 4px;
}

.node-halo {
  fill: url(#nodeGlow);
  opacity: 0.65;
  transform-box: fill-box;
  transform-origin: center;
  animation: map-node-pulse 2.4s ease-in-out infinite;
}

.node-core {
  fill: #fff;
  stroke: #ff604b;
  stroke-width: 3;
  filter: drop-shadow(0 0 9px rgba(255, 96, 75, 0.95));
}

.node.hub .node-halo {
  opacity: 0.9;
  animation-duration: 1.8s;
}

.node.hub .node-core {
  stroke: #42f58d;
  filter: drop-shadow(0 0 13px rgba(66, 245, 141, 0.95));
}

.map-sweep {
  position: absolute;
  inset: 18px;
  border-radius: 8px;
  background: linear-gradient(100deg, transparent 12%, rgba(255, 255, 255, 0.18) 46%, transparent 72%);
  transform: translateX(-115%);
  animation: map-sweep 4.5s ease-in-out infinite;
}

.region-list {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.region-list span {
  display: grid;
  place-items: center;
  min-height: 46px;
  color: #dff7ff;
  font-weight: 800;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 18px rgba(255, 255, 255, 0.03);
}

@keyframes map-route-flow {
  to {
    stroke-dashoffset: -60;
  }
}

@keyframes map-node-pulse {
  0%, 100% {
    opacity: 0.42;
    transform: scale(0.82);
  }
  50% {
    opacity: 0.95;
    transform: scale(1.08);
  }
}

@keyframes map-sweep {
  0%, 38% {
    transform: translateX(-115%);
  }
  78%, 100% {
    transform: translateX(115%);
  }
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  padding: 22px 24px;
}

summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 800;
}

details p {
  margin: 14px 0 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  padding: 36px 5vw;
  color: rgba(255, 255, 255, 0.72);
  background: #050d17;
}

.site-footer strong {
  color: #fff;
}

.site-footer p {
  margin: 8px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-content: start;
}

@media (max-width: 1020px) {
  .site-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px;
    align-items: center;
    gap: 0 14px;
    min-height: 64px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .menu-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: #fff;
    border: 1px solid rgba(217, 226, 236, 0.95);
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(18, 32, 50, 0.08);
    cursor: pointer;
  }

  .menu-toggle-line {
    position: absolute;
    width: 18px;
    height: 2px;
    background: var(--ink);
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .menu-toggle-line:nth-child(1) {
    transform: translateY(-6px);
  }

  .menu-toggle-line:nth-child(3) {
    transform: translateY(6px);
  }

  .main-nav {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    max-height: 0;
    gap: 0;
    overflow: hidden;
    color: var(--ink);
    font-size: 16px;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.24s ease, opacity 0.2s ease, padding 0.2s ease;
  }

  .main-nav a {
    display: block;
    padding: 13px 0;
    border-top: 1px solid rgba(217, 226, 236, 0.85);
  }

  .header-action {
    grid-column: 1 / -1;
    width: 100%;
    max-height: 0;
    min-height: 0;
    margin-top: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.24s ease, opacity 0.2s ease, margin 0.2s ease, padding 0.2s ease;
  }

  .site-header.is-menu-open .main-nav {
    max-height: 320px;
    padding-top: 10px;
    opacity: 1;
    pointer-events: auto;
  }

  .site-header.is-menu-open .header-action {
    max-height: 48px;
    min-height: 44px;
    margin-top: 10px;
    padding: 0 18px;
    opacity: 1;
    pointer-events: auto;
  }

  .site-header.is-menu-open .menu-toggle-line:nth-child(1) {
    transform: rotate(45deg);
  }

  .site-header.is-menu-open .menu-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .site-header.is-menu-open .menu-toggle-line:nth-child(3) {
    transform: rotate(-45deg);
  }

  .hero {
    min-height: 760px;
  }

  .hero-content {
    padding-top: 58px;
  }

  .feature-grid,
  .download-grid,
  .plan-grid,
  .review-grid,
  .article-grid,
  .steps,
  .coverage {
    grid-template-columns: 1fr;
  }

  .download-item,
  .plan {
    min-height: auto;
  }

  .map-panel {
    min-height: 390px;
  }
}

@media (max-width: 640px) {
  .brand {
    min-width: 0;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.9) 48%, rgba(255,255,255,0.55) 100%),
      linear-gradient(180deg, rgba(255,255,255,0) 70%, #fff 100%);
  }

  .hero-content {
    width: 90vw;
    margin: 0 auto;
  }

  h1 {
    font-size: 42px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 68px 5vw;
  }

  .region-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .map-panel {
    min-height: 360px;
    padding: 12px;
  }

  .map-panel::before,
  .map-sweep {
    inset: 12px;
  }

  .world-map {
    min-height: 250px;
  }

  .site-footer {
    flex-direction: column;
  }
}

/* Mobile layout guard for repaired raster hero images and injected public footers. */
img.image-qa-raster-hero,.hero-image,.hero-visual img,.hero-media img,.hero-photo img{height:auto!important}
@media (max-width:700px){footer[class*="public-footer-"]{grid-template-columns:minmax(0,1fr)!important}footer[class*="public-footer-"]>*{min-width:0}footer[class*="public-footer-"] nav{width:100%;max-width:100%;justify-content:flex-start}.hero-image,.hero-visual img,.hero-media img,.hero-photo img{height:auto!important;max-height:52vh;object-fit:cover}.table-wrap{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain}.table-wrap table{width:max-content;min-width:620px;max-width:none}pre{max-width:100%;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;overflow-x:auto}pre code{white-space:inherit;overflow-wrap:anywhere;word-break:break-word}.nav-menu nav{right:16px;max-width:calc(100vw - 32px);min-width:0}.uptime-scan,.map-sweep{max-width:100vw;overflow:hidden}}