:root {
  --paper: #f7f7f4;
  --paper-soft: #ecece7;
  --ink: #0b0c0c;
  --ink-soft: #3c4142;
  --line: rgba(11, 12, 12, 0.14);
  --line-strong: rgba(11, 12, 12, 0.28);
  --cyan: #39d0bb;
  --blue: #3159ff;
  --amber: #ffb000;
  --orange: #ff5a2a;
  --green: #a6f15b;
  --radius: 8px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", "PingFang SC", sans-serif;
  letter-spacing: 0;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(11, 12, 12, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(11, 12, 12, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black 0%, black 68%, transparent 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 18px 28px;
  background: rgba(247, 247, 244, 0.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 50%;
  font-size: 12px;
}

.brand-name {
  font-size: 15px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.52);
}

.site-nav a {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border-radius: 999px;
  padding: 0 14px;
  color: var(--ink-soft);
  font-size: 14px;
  white-space: nowrap;
}

.site-nav a:hover {
  background: var(--ink);
  color: var(--paper);
}

.header-action {
  justify-self: end;
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 0 18px;
  color: var(--paper);
  background: var(--ink);
  font-size: 14px;
}

.menu-toggle {
  display: none;
  justify-self: end;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
}

.menu-toggle span {
  display: block;
  width: 16px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

.section-shell {
  width: min(1440px, calc(100% - 48px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(460px, 0.82fr);
  gap: 36px;
  padding: 78px 0 30px;
  align-items: center;
}

.hero-copy {
  display: flex;
  min-width: 0;
  min-height: 620px;
  flex-direction: column;
  justify-content: center;
  padding-right: 24px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 22px;
  color: var(--ink-soft);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  text-transform: uppercase;
}

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

h1 {
  max-width: 930px;
  margin-bottom: 24px;
  font-size: 68px;
  line-height: 0.98;
  font-weight: 650;
  overflow-wrap: anywhere;
}

h1 span {
  display: block;
}

h2 {
  font-size: 54px;
  line-height: 1.03;
  font-weight: 650;
}

h3 {
  font-size: 22px;
  line-height: 1.2;
  font-weight: 650;
}

.hero-text {
  max-width: 760px;
  margin-bottom: 34px;
  color: var(--ink-soft);
  font-size: 19px;
  line-height: 1.72;
  overflow-wrap: anywhere;
}

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

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 0 20px;
  font-weight: 650;
}

.button-dark {
  background: var(--ink);
  color: var(--paper);
}

.button-light {
  background: transparent;
  color: var(--ink);
}

.button:hover,
.header-action:hover {
  transform: translateY(-1px);
}

.hero-console {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 620px;
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(11, 12, 12, 0.96), rgba(11, 12, 12, 0.9)),
    #101112;
  color: var(--paper);
}

.console-top {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 18px 0;
  color: rgba(247, 247, 244, 0.74);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.pulse-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.pulse-label::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px rgba(166, 241, 91, 0.9);
}

#signalCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.console-overlay {
  position: absolute;
  inset: 78px 24px 118px;
}

.system-node {
  position: absolute;
  width: 172px;
  min-height: 88px;
  padding: 12px;
  border: 1px solid rgba(247, 247, 244, 0.3);
  border-radius: var(--radius);
  background: rgba(247, 247, 244, 0.08);
  backdrop-filter: blur(14px);
}

.system-node::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
}

.system-node strong,
.system-node small,
.node-id {
  display: block;
}

.system-node strong {
  margin: 8px 0 6px;
  font-size: 16px;
}

.system-node small,
.node-id {
  color: rgba(247, 247, 244, 0.65);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
}

.node-primary {
  top: 9%;
  left: 8%;
}

.node-alert {
  top: 36%;
  right: 4%;
  border-color: rgba(255, 176, 0, 0.62);
}

.node-alert::after {
  background: var(--amber);
  box-shadow: 0 0 18px rgba(255, 176, 0, 0.82);
}

.system-node:not(.node-primary):not(.node-alert) {
  bottom: 8%;
  left: 35%;
}

.console-status {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(247, 247, 244, 0.22);
  border-radius: var(--radius);
  background: rgba(247, 247, 244, 0.08);
  backdrop-filter: blur(12px);
}

.console-status div {
  padding: 14px;
}

.console-status div + div {
  border-left: 1px solid rgba(247, 247, 244, 0.18);
}

.console-status span {
  display: block;
  color: rgba(247, 247, 244, 0.6);
  font-size: 12px;
}

.console-status strong {
  display: block;
  margin-top: 5px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 22px;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.signal-strip span {
  min-height: 84px;
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
}

.signal-strip span:last-child {
  border-right: 0;
}

.content-section {
  padding: 118px 0;
  border-bottom: 1px solid var(--line-strong);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(320px, 0.52fr);
  gap: 42px;
  align-items: end;
  margin-bottom: 44px;
}

.section-heading p,
.split-section p,
.contact-section p {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.72;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.product-card,
.store-item,
.service-list article,
.solution-flow article {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(247, 247, 244, 0.8);
}

.product-card {
  grid-column: span 6;
  min-height: 320px;
  padding: 24px;
}

.product-card.featured {
  grid-column: span 7;
  min-height: 430px;
  background: var(--ink);
  color: var(--paper);
}

.product-card:not(.featured):nth-child(2) {
  grid-column: span 5;
  min-height: 430px;
}

.product-card.compact {
  grid-column: span 4;
  min-height: 230px;
}

.card-index {
  margin-bottom: 32px;
  color: currentColor;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  opacity: 0.64;
}

.product-card h3 {
  max-width: 680px;
  margin-bottom: 16px;
}

.product-card p {
  color: inherit;
  line-height: 1.72;
  opacity: 0.72;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.keyword-list li,
.advantage-row span {
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 13px;
  opacity: 0.76;
}

.advantage-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.7fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.solution-flow {
  display: grid;
  gap: 12px;
}

.solution-flow article {
  display: grid;
  grid-template-columns: 118px 220px 1fr;
  gap: 22px;
  align-items: center;
  min-height: 138px;
  padding: 22px;
}

.solution-flow span,
.service-list span,
.store-state {
  color: var(--ink-soft);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.solution-flow h3,
.solution-flow p {
  margin: 0;
}

.store-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.store-item {
  min-height: 260px;
  padding: 22px;
}

.store-state {
  display: inline-flex;
  margin-bottom: 74px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 6px 9px;
}

.store-item p,
.service-list p {
  color: var(--ink-soft);
  line-height: 1.68;
}

.services-section {
  background:
    linear-gradient(to bottom, transparent, rgba(49, 89, 255, 0.05)),
    transparent;
}

.service-list {
  display: grid;
  border-top: 1px solid var(--ink);
}

.service-list article {
  display: grid;
  grid-template-columns: 80px minmax(180px, 0.32fr) 1fr;
  gap: 28px;
  align-items: center;
  min-height: 132px;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
}

.service-list h3,
.service-list p {
  margin: 0;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(360px, 0.55fr);
  gap: 64px;
  padding: 118px 0;
}

.contact-section h2 {
  margin-bottom: 22px;
}

.contact-form {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: var(--ink-soft);
  font-size: 13px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  padding: 13px 12px;
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--ink);
}

.contact-form textarea {
  resize: vertical;
}

.form-note {
  margin: 0;
  color: var(--ink-soft);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  word-break: break-word;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
}

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: 440px;
    padding-right: 0;
  }

  .hero-console {
    min-height: 560px;
  }

  h1 {
    font-size: 64px;
  }

  .section-heading,
  .split-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .store-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 14px 16px;
  }

  .site-nav,
  .header-action {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .site-header.nav-open .site-nav {
    position: absolute;
    top: 70px;
    right: 16px;
    left: 16px;
    display: grid;
    gap: 4px;
    padding: 8px;
    border-radius: var(--radius);
    background: var(--paper);
    box-shadow: 0 14px 40px rgba(11, 12, 12, 0.12);
  }

  .site-header.nav-open .site-nav a {
    justify-content: center;
    border-radius: var(--radius);
  }

  .section-shell {
    width: min(100% - 28px, 1440px);
  }

  .hero {
    min-height: 0;
    padding-top: 44px;
  }

  .hero-copy {
    min-height: auto;
  }

  h1 {
    font-size: 48px;
    line-height: 1.05;
  }

  h2 {
    font-size: 38px;
  }

  .hero-text {
    font-size: 16px;
  }

  .hero-console {
    min-height: 500px;
  }

  .console-overlay {
    inset: 70px 16px 110px;
  }

  .system-node {
    width: 154px;
  }

  .signal-strip {
    grid-template-columns: repeat(3, 1fr);
  }

  .signal-strip span {
    min-height: 64px;
  }

  .content-section,
  .contact-section {
    padding: 78px 0;
  }

  .section-heading {
    gap: 18px;
  }

  .product-card,
  .product-card.featured,
  .product-card:not(.featured):nth-child(2),
  .product-card.compact {
    grid-column: 1 / -1;
    min-height: auto;
  }

  .solution-flow article,
  .service-list article {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 20px 0;
  }

  .solution-flow article {
    padding: 20px;
  }

  .service-list article {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 32px;
  }

  .hero-console {
    min-height: 470px;
  }

  .console-status {
    grid-template-columns: 1fr;
  }

  .console-status div + div {
    border-top: 1px solid rgba(247, 247, 244, 0.18);
    border-left: 0;
  }

  .system-node {
    width: 142px;
    min-height: 76px;
    padding: 10px;
  }

  .node-alert {
    top: 34%;
    right: 0;
  }

  .system-node:not(.node-primary):not(.node-alert) {
    left: 16%;
  }

  .signal-strip,
  .store-grid {
    grid-template-columns: 1fr;
  }

  .signal-strip span {
    border-right: 0;
    border-bottom: 1px solid var(--line-strong);
  }

  .signal-strip span:last-child {
    border-bottom: 0;
  }

  .contact-section {
    grid-template-columns: 1fr;
  }

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

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