:root {
  --bg: #020b19;
  --bg-2: #031429;
  --panel: #0b1420;
  --panel-2: #081a31;
  --ink: #eef6ff;
  --text: #c9d8e8;
  --muted: #8da1b8;
  --cyan: #2cf5ff;
  --cyan-2: #45dfff;
  --blue: #1b72ff;
  --silver: #b8c7d7;
  --line: rgba(166, 204, 244, 0.14);
  --line-strong: rgba(44, 245, 255, 0.52);
  --font-sans: "HarmonyOS Sans SC", "MiSans", "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --shell: min(1240px, calc(100% - 80px));
  --nav-height: 74px;
  --footer-height: 88px;
  --section-offset: 84px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

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

a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

#services,
#loop,
#contact,
#footer {
  scroll-margin-top: var(--section-offset);
}

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: var(--nav-height);
  border-bottom: 1px solid rgba(144, 186, 227, 0.08);
  background: rgba(2, 11, 25, 0.92);
  backdrop-filter: blur(12px);
}

.nav-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: var(--shell);
  height: var(--nav-height);
  margin: 0 auto;
  gap: 24px;
}

.brand {
  display: block;
  min-width: 0;
  max-width: 390px;
  overflow: hidden;
  color: #d7e8ff;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 52px;
  justify-content: center;
  color: var(--ink);
  font-size: 15px;
  font-weight: 720;
  white-space: nowrap;
}

.nav-links a,
.nav-cta,
.primary-btn,
.secondary-btn,
.service-card a {
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nav-links a:hover {
  color: var(--cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 22px;
}

.mobile-actions {
  display: none;
}

.search-dot {
  position: relative;
  display: inline-block;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  border: 2px solid #d5e5f8;
  border-radius: 50%;
  opacity: 0.9;
}

.search-dot::after {
  content: "";
  position: absolute;
  right: 1px;
  bottom: 2px;
  width: 8px;
  height: 2px;
  border-radius: 999px;
  background: #d5e5f8;
  transform: rotate(45deg);
  transform-origin: center;
}

.nav-cta {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 4px;
  color: #fff;
  background: #1167f2;
  font-size: 13px;
  font-weight: 800;
}

.nav-cta:hover {
  background: #2388ff;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding-top: var(--nav-height);
  background: #061225;
  isolation: isolate;
}

.twin-bg {
  position: absolute;
  inset: 0;
  z-index: -3;
  background-image: url("assets/hero-digital-road-network.png");
  background-position: center 46%;
  background-size: cover;
  opacity: 0.98;
  transform: scale(1.015);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 74% 34%, rgba(44, 245, 255, 0.18), rgba(44, 245, 255, 0) 30%),
    linear-gradient(90deg, rgba(2, 10, 23, 0.96) 0%, rgba(3, 13, 29, 0.86) 35%, rgba(3, 13, 29, 0.28) 68%, rgba(3, 13, 29, 0.52) 100%),
    linear-gradient(180deg, rgba(2, 10, 23, 0.14) 0%, rgba(3, 13, 29, 0.36) 50%, #041226 100%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  z-index: -1;
  height: 190px;
  background: linear-gradient(180deg, rgba(4, 18, 38, 0), #041226 86%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  width: var(--shell);
  min-height: calc(100svh - var(--nav-height));
  margin: 0 auto;
}

.hero-copy {
  width: min(720px, 100%);
  padding-top: clamp(118px, 16vh, 178px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 22px;
  padding: 0 13px;
  border: 1px solid rgba(44, 245, 255, 0.56);
  border-radius: 999px;
  color: var(--cyan);
  background: rgba(7, 75, 97, 0.38);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.eyebrow i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.company-line {
  margin: 18px 0 0;
  color: #b6cce4;
  font-size: 15px;
  font-weight: 760;
  letter-spacing: 0.02em;
}

.hero h1 {
  max-width: 720px;
  margin: 34px 0 0;
  color: var(--ink);
  font-size: clamp(46px, 4.45vw, 66px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: 0;
  text-wrap: balance;
  text-shadow: 0 0 24px rgba(44, 245, 255, 0.16);
}

.hero-lede {
  position: relative;
  max-width: 690px;
  margin: 34px 0 0;
  padding-left: 28px;
  color: #e4f1ff;
  font-size: 18px;
  line-height: 1.82;
  text-wrap: pretty;
}

.hero-lede::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: rgba(176, 205, 238, 0.56);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  min-height: 60px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 32px;
  border-radius: 5px;
  font-size: 15px;
  font-weight: 780;
}

.primary-btn {
  color: #032233;
  background: linear-gradient(135deg, #33fbff, #56dcff);
}

.primary-btn:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #5bffff, #65cfff);
}

.secondary-btn {
  min-width: 198px;
  color: var(--ink);
  border: 1px solid rgba(198, 225, 255, 0.26);
  background: rgba(5, 14, 30, 0.64);
}

.secondary-btn:hover {
  border-color: rgba(44, 245, 255, 0.62);
  color: var(--cyan);
  transform: translateY(-1px);
}

.secondary-btn span {
  color: var(--cyan);
  font-size: 18px;
}

.status-card {
  position: absolute;
  right: 0;
  bottom: clamp(38px, 8vh, 78px);
  width: 300px;
  min-height: 116px;
  padding: 20px 26px;
  border: 2px solid var(--cyan);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(8, 24, 45, 0.88), rgba(3, 14, 30, 0.76)),
    rgba(4, 14, 29, 0.76);
}

.status-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.status-line {
  width: 190px;
  height: 3px;
  margin-top: 16px;
  overflow: hidden;
  background: rgba(44, 245, 255, 0.12);
}

.status-line::before {
  content: "";
  display: block;
  width: 76%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), rgba(44, 245, 255, 0.08));
}

.status-card p {
  margin: 13px 0 0;
  padding: 0;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
}

.status-card p::before {
  display: none;
}

.service-section {
  position: relative;
  min-height: calc(100svh - var(--section-offset));
  padding: 76px 0 86px;
  background:
    radial-gradient(circle at 50% -8%, rgba(38, 181, 255, 0.09), rgba(38, 181, 255, 0) 34%),
    #041226;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1fr);
  gap: 36px;
  align-items: end;
  width: var(--shell);
  margin: 0 auto 34px;
}

.section-intro h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.18;
  font-weight: 900;
}

.section-intro p {
  max-width: 560px;
  margin: 12px 0 0;
  color: #bfcfe0;
  font-size: 15px;
  line-height: 1.74;
}

.scope-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.scope-strip span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 14px;
  border: 1px solid rgba(44, 245, 255, 0.24);
  border-radius: 999px;
  color: #d7e7f8;
  background: rgba(6, 21, 40, 0.54);
  font-size: 13px;
  font-weight: 760;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  width: var(--shell);
  margin: 0 auto;
}

.service-card {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  padding: 34px 34px 32px;
  border: 1px solid rgba(188, 210, 235, 0.16);
  border-radius: 7px;
  background:
    radial-gradient(circle at 18% 0%, rgba(44, 245, 255, 0.12), rgba(44, 245, 255, 0) 34%),
    linear-gradient(180deg, rgba(17, 26, 38, 0.98), rgba(9, 17, 28, 0.98));
}

.service-card::before,
.service-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.service-card::before {
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, rgba(44, 245, 255, 0.72), rgba(44, 245, 255, 0.08));
}

.service-card::after {
  inset: 14px;
  opacity: 0.58;
  background:
    linear-gradient(var(--cyan), var(--cyan)) left top / 36px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left top / 1px 36px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right top / 36px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) right top / 1px 36px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left bottom / 24px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) left bottom / 1px 24px no-repeat;
}

.service-card > * {
  position: relative;
  z-index: 1;
}

.icon-box {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid rgba(108, 174, 255, 0.22);
  border-radius: 4px;
  background: linear-gradient(135deg, rgba(27, 114, 255, 0.32), rgba(22, 42, 76, 0.76));
}

.icon-box.teal {
  border-color: rgba(44, 245, 255, 0.34);
  background: linear-gradient(135deg, rgba(44, 245, 255, 0.24), rgba(10, 68, 77, 0.76));
}

.icon-box.silver {
  border-color: rgba(184, 199, 215, 0.26);
  background: linear-gradient(135deg, rgba(184, 199, 215, 0.16), rgba(32, 40, 50, 0.82));
}

.icon-box svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: #d7e8ff;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-box.teal svg {
  stroke: var(--cyan);
}

.service-card h3 {
  margin: 34px 0 0;
  color: var(--ink);
  font-size: 28px;
  line-height: 1.25;
  font-weight: 900;
  text-wrap: balance;
}

.service-card p {
  margin: 22px 0 0;
  color: #e0eaf4;
  font-size: 15px;
  line-height: 1.82;
}

.service-card a {
  display: inline-flex;
  margin-top: 30px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
}

.service-card a:hover {
  color: #90fbff;
  transform: translateX(2px);
}

.loop-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1fr);
  gap: clamp(52px, 7vw, 128px);
  align-items: center;
  width: var(--shell);
  min-height: calc(100svh - var(--section-offset));
  margin: 0 auto;
  padding: 116px 0 120px;
}

.loop-copy h2 {
  margin: 0;
  max-width: 560px;
  color: var(--ink);
  font-size: clamp(38px, 3.8vw, 54px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: 0;
  text-wrap: balance;
}

.loop-list {
  display: grid;
  gap: 24px;
  margin-top: 42px;
}

.loop-list article {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.loop-list b {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  color: var(--cyan);
  border: 1px solid rgba(44, 245, 255, 0.16);
  background: #13243d;
  font-size: 15px;
  font-weight: 800;
}

.loop-list h3 {
  margin: 0;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.35;
}

.loop-list p {
  margin: 6px 0 0;
  color: #d7e4f1;
  font-size: 15px;
  line-height: 1.75;
}

.visual-panel {
  position: relative;
  display: grid;
  min-height: 538px;
  place-items: center;
  overflow: hidden;
  border: 1px dashed rgba(188, 210, 235, 0.22);
  border-radius: 12px;
  background:
    radial-gradient(circle at 50% 42%, rgba(44, 245, 255, 0.16), rgba(44, 245, 255, 0) 38%),
    linear-gradient(145deg, rgba(18, 28, 40, 0.98), rgba(5, 16, 31, 0.98));
}

.visual-panel::before {
  content: "";
  position: absolute;
  inset: 36px;
  border: 1px solid rgba(44, 245, 255, 0.08);
  border-radius: 10px;
  pointer-events: none;
}

.trace-visual {
  position: relative;
  display: grid;
  width: min(500px, 86%);
  aspect-ratio: 1.28;
  place-items: center;
  overflow: hidden;
  border-radius: 10px;
  background:
    radial-gradient(circle at 50% 50%, rgba(44, 245, 255, 0.14), rgba(44, 245, 255, 0) 34%),
    linear-gradient(135deg, rgba(10, 45, 67, 0.86), rgba(7, 27, 45, 0.86));
}

.trace-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.orbit {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.orbit-base {
  stroke: rgba(154, 200, 245, 0.24);
  stroke-width: 1.4;
}

.orbit-glow {
  stroke: url("#traceGlow");
  stroke-width: 3;
  stroke-dasharray: 58 24;
  animation: traceMove 6s linear infinite;
}

.inner-path {
  fill: none;
  stroke: rgba(124, 196, 255, 0.2);
  stroke-width: 1;
}

.pulse-ring {
  fill: rgba(44, 245, 255, 0.04);
  stroke: rgba(44, 245, 255, 0.38);
  stroke-width: 1.2;
}

.core-dot,
.node-dots circle {
  fill: var(--cyan);
}

.core-dot {
  opacity: 0.82;
}

.node-dots circle {
  opacity: 0.9;
}

.trace-core,
.trace-node {
  position: absolute;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(44, 245, 255, 0.34);
  color: var(--ink);
  background: rgba(3, 13, 29, 0.86);
  font-weight: 800;
  white-space: nowrap;
}

.trace-core {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  color: var(--cyan);
  background:
    radial-gradient(circle, rgba(44, 245, 255, 0.18), rgba(3, 13, 29, 0.88) 64%),
    rgba(3, 13, 29, 0.88);
  font-size: 16px;
}

.trace-node {
  min-height: 34px;
  padding: 6px 12px;
  border-radius: 4px;
  color: #dff5ff;
  font-size: 13px;
}

.node-app {
  top: 12%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.node-sync {
  top: 42%;
  right: 3%;
  transform: translateY(-50%);
}

.node-gate {
  right: 18%;
  bottom: 11%;
}

.node-upload {
  left: 13%;
  bottom: 18%;
}

.node-ops {
  top: 34%;
  left: 4%;
}

.tag {
  position: absolute;
  z-index: 2;
  min-height: 28px;
  padding: 6px 12px;
  border: 2px solid #d3eaff;
  border-radius: 4px;
  color: var(--ink);
  background: #06111f;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.tag-top {
  top: 38px;
  right: 0;
  border-color: var(--cyan);
}

.tag-bottom {
  left: 0;
  bottom: 86px;
}

.contact-section {
  position: relative;
  display: grid;
  min-height: calc(100svh - var(--nav-height) - var(--footer-height) - 10px);
  align-items: center;
  padding: clamp(38px, 4.5vw, 62px) 0 clamp(34px, 4vw, 56px);
  background:
    radial-gradient(circle at 14% 20%, rgba(44, 245, 255, 0.12), rgba(44, 245, 255, 0) 30%),
    radial-gradient(circle at 88% 72%, rgba(27, 114, 255, 0.12), rgba(27, 114, 255, 0) 34%),
    #020b19;
}

.contact-section::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(44, 245, 255, 0), rgba(44, 245, 255, 0.34), rgba(44, 245, 255, 0));
}

.contact-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  gap: clamp(28px, 4vw, 58px);
  align-items: stretch;
  width: var(--shell);
  margin: 0 auto;
  padding: clamp(30px, 3.6vw, 48px);
  border: 1px solid rgba(44, 245, 255, 0.22);
  border-radius: 10px;
  background:
    linear-gradient(90deg, rgba(44, 245, 255, 0.08), rgba(44, 245, 255, 0) 38%),
    radial-gradient(circle at 90% 12%, rgba(44, 245, 255, 0.14), rgba(44, 245, 255, 0) 32%),
    linear-gradient(135deg, rgba(7, 27, 52, 0.94), rgba(4, 15, 31, 0.96));
}

@media (min-width: 981px) {
  .contact-shell {
    min-height: clamp(430px, 50vh, 560px);
  }
}

.contact-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 34px;
}

.contact-copy-main {
  max-width: 690px;
}

.contact-kicker {
  display: inline-flex;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.contact-section h2 {
  margin: 12px 0 0;
  color: var(--ink);
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.2;
  font-weight: 900;
  text-wrap: balance;
}

.contact-section p {
  max-width: 620px;
  margin: 14px 0 0;
  color: #c8d7e8;
  font-size: 16px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-start;
  margin-top: 26px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  padding: 4px 0 4px clamp(20px, 2.4vw, 34px);
  border-left: 1px solid rgba(188, 210, 235, 0.16);
  color: #d9e9f8;
  font-style: normal;
}

.contact-info-list {
  display: grid;
  gap: 0;
}

.contact-info-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 15px 0;
  border-bottom: 1px solid rgba(166, 204, 244, 0.12);
}

.contact-info-row:last-child {
  border-bottom: 0;
}

.contact-info-row span {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.contact-info-row p {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: none;
  margin: 0;
  color: #eaf6ff;
  font-size: 16px;
  line-height: 1.58;
}

.contact-info-row a {
  color: #eff8ff;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.contact-info-row a:hover {
  color: var(--cyan);
}

.contact-info-row em {
  color: #8096ac;
  font-style: normal;
}

.contact-info-address p {
  color: #d3e2f1;
  font-size: 15px;
}

.site-footer {
  min-height: 84px;
  padding: 18px 0;
  border-top: 1px solid rgba(188, 210, 235, 0.1);
  background:
    linear-gradient(180deg, #041226, #020b19);
}

.footer-main {
  width: var(--shell);
  margin: 0 auto;
  display: grid;
  min-height: 48px;
  place-items: center;
  gap: 6px;
  color: #a8bad0;
  font-size: clamp(11px, 3vw, 13px);
  line-height: 1.72;
  text-align: center;
}

.footer-main p {
  margin: 0;
  color: #b8c7d8;
  white-space: nowrap;
}

.footer-main a {
  color: #c9dfff;
  font-weight: 760;
}

.footer-main span {
  color: #b8c7d8;
}

@media (min-width: 1600px) {
  :root {
    --shell: min(1480px, calc(100% - 160px));
  }

  .hero h1 {
    max-width: 860px;
    font-size: clamp(72px, 4.35vw, 84px);
  }

  .hero-copy {
    width: min(850px, 100%);
    padding-top: clamp(170px, 18vh, 220px);
  }

  .hero-lede {
    max-width: 760px;
    font-size: 20px;
  }

  .primary-btn,
  .secondary-btn {
    min-height: 64px;
    padding-inline: 36px;
  }

  .status-card {
    width: 340px;
    min-height: 128px;
  }
}

.footer-main a:hover {
  color: var(--cyan);
}

@keyframes traceMove {
  to {
    stroke-dashoffset: -82;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 980px) {
  .nav-inner,
  .hero-content,
  .section-intro,
  .service-grid,
  .loop-section,
  .contact-shell,
  .footer-main {
    width: min(100% - 36px, 1240px);
  }

  .nav-inner {
    display: flex;
    justify-content: space-between;
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .mobile-actions {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .mobile-call {
    display: inline-flex;
    min-height: 34px;
    align-items: center;
    justify-content: center;
    padding: 0 13px;
    border: 1px solid rgba(44, 245, 255, 0.34);
    border-radius: 4px;
    color: var(--cyan);
    background: rgba(7, 23, 44, 0.72);
    font-size: 13px;
    font-weight: 820;
  }

  .mobile-menu {
    position: relative;
  }

  .mobile-menu summary {
    display: flex;
    width: 38px;
    height: 34px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid rgba(198, 225, 255, 0.24);
    border-radius: 4px;
    background: rgba(7, 23, 44, 0.72);
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    display: block;
    width: 16px;
    height: 2px;
    border-radius: 999px;
    background: #d7e8ff;
  }

  .mobile-menu-panel {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    z-index: 25;
    display: grid;
    width: min(270px, calc(100vw - 36px));
    padding: 12px;
    border: 1px solid rgba(44, 245, 255, 0.24);
    border-radius: 8px;
    background: #030d1d;
  }

  .mobile-menu-panel a {
    display: flex;
    min-height: 42px;
    align-items: center;
    padding: 0 12px;
    border-bottom: 1px solid rgba(166, 204, 244, 0.1);
    color: #e8f4ff;
    font-size: 14px;
    font-weight: 760;
  }

  .mobile-menu-panel a:last-child {
    border-bottom: 0;
    color: var(--cyan);
  }

  .brand {
    max-width: min(360px, calc(100vw - 156px));
    font-size: 17px;
  }

  .hero {
    min-height: 820px;
  }

  .hero::before {
    background:
      radial-gradient(circle at 56% 28%, rgba(44, 245, 255, 0.18), rgba(44, 245, 255, 0) 36%),
      linear-gradient(180deg, rgba(2, 10, 23, 0.48) 0%, rgba(2, 10, 23, 0.42) 36%, rgba(3, 13, 29, 0.84) 100%),
      linear-gradient(90deg, rgba(2, 10, 23, 0.9), rgba(2, 10, 23, 0.32));
  }

  .hero-content {
    min-height: 746px;
  }

  .hero-copy {
    padding-top: 108px;
  }

  .hero h1 {
    margin-top: 30px;
    font-size: 44px;
  }

  .hero-lede {
    margin-top: 28px;
    font-size: 16px;
  }

  .status-card {
    right: 0;
    bottom: 32px;
    width: min(300px, 100%);
  }

  .section-intro,
  .service-grid,
  .loop-section,
  .contact-shell,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .section-intro {
    align-items: start;
  }

  .scope-strip {
    justify-content: flex-start;
  }

  .loop-section {
    min-height: auto;
  }

  .contact-info {
    padding: 26px 0 0;
    border-top: 1px solid rgba(188, 210, 235, 0.16);
    border-left: 0;
  }

  .contact-copy {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  :root {
    --nav-height: 58px;
    --footer-height: 96px;
    --section-offset: 68px;
  }

  .site-nav,
  .nav-inner {
    height: 58px;
  }

  .brand {
    max-width: calc(100vw - 160px);
    font-size: 15px;
  }

  .hero {
    min-height: 844px;
    padding-top: 58px;
  }

  .twin-bg {
    background-position: 50% center;
    transform: scale(1.03);
  }

  .hero-content {
    min-height: 786px;
  }

  .hero-copy {
    padding-top: 44px;
  }

  .eyebrow {
    max-width: 100%;
    font-size: 9px;
  }

  .hero h1 {
    font-size: 38px;
    line-height: 1.18;
  }

  .company-line {
    margin-top: 14px;
    font-size: 13px;
  }

  .hero-lede {
    margin-top: 24px;
    padding-left: 18px;
    line-height: 1.76;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 30px;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
    min-height: 54px;
    padding: 0 18px;
  }

  .status-card {
    bottom: 26px;
    min-height: 98px;
    padding: 14px 18px;
  }

  .status-line {
    width: 170px;
    margin-top: 12px;
  }

  .status-card p {
    margin-top: 10px;
    font-size: 13px;
  }

  .service-section {
    padding: 58px 0;
  }

  .service-card {
    min-height: auto;
    padding: 28px;
  }

  .section-intro {
    margin-bottom: 24px;
  }

  .section-intro h2 {
    font-size: 30px;
  }

  .section-intro p {
    font-size: 14px;
  }

  .scope-strip {
    gap: 8px;
  }

  .scope-strip span {
    min-height: 30px;
    padding: 0 11px;
    font-size: 12px;
  }

  .service-card h3 {
    font-size: 25px;
  }

  .loop-section {
    padding: 76px 0 78px;
  }

  .loop-copy h2 {
    font-size: 34px;
  }

  .loop-list article {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 16px;
  }

  .loop-list b {
    width: 34px;
    height: 34px;
  }

  .visual-panel {
    min-height: 430px;
  }

  .visual-panel::before {
    inset: 24px;
  }

  .trace-visual {
    width: min(330px, 88%);
    min-height: 310px;
  }

  .trace-core {
    width: 88px;
    height: 88px;
    font-size: 13px;
  }

  .trace-node {
    font-size: 11px;
    padding: 4px 8px;
  }

  .node-app {
    top: 13%;
  }

  .node-sync {
    right: 1%;
  }

  .node-gate {
    right: 11%;
    bottom: 12%;
  }

  .node-upload {
    left: 8%;
    bottom: 18%;
  }

  .node-ops {
    left: 1%;
  }

  .tag-top {
    top: 24px;
  }

  .tag-bottom {
    bottom: 42px;
  }

  .contact-section {
    padding: 18px 0 16px;
  }

  .contact-shell {
    gap: 18px;
    padding: 20px 22px;
  }

  .contact-section h2 {
    font-size: 25px;
  }

  .contact-section p {
    font-size: 13px;
    line-height: 1.66;
  }

  .contact-actions {
    display: grid;
    grid-template-columns: 1fr;
    justify-content: stretch;
    gap: 10px;
    margin-top: 18px;
  }

  .primary-btn,
  .secondary-btn {
    min-height: 48px;
  }

  .contact-info {
    gap: 10px;
    padding-top: 16px;
  }

  .contact-info-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 9px 0;
  }

  .contact-info-row p {
    gap: 5px;
    font-size: 13px;
    line-height: 1.52;
  }

  .contact-info-address p {
    font-size: 13px;
  }

  .footer-main {
    width: min(100% - 36px, 1240px);
  }
}