:root {
  --navy: #0c1522;
  --navy-2: #111f31;
  --steel: #25364a;
  --cyan: #24c7b7;
  --orange: #ff9d3d;
  --ink: #101c2b;
  --muted: #657488;
  --paper: #f3f6f8;
  --white: #ffffff;
  --line: #dce2e7;
  --shell: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  width: 100%;
}

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

button {
  font: inherit;
}

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

.topbar {
  position: fixed;
  z-index: 40;
  top: 0;
  width: 100%;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: background 180ms ease, backdrop-filter 180ms ease;
}

.topbar.is-scrolled {
  background: rgba(12, 21, 34, 0.92);
  backdrop-filter: blur(14px);
}

.topbar-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.logo-chip {
  position: relative;
  display: block;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 7px;
}

.logo-chip::before,
.logo-chip::after {
  position: absolute;
  background: var(--cyan);
  content: "";
}

.logo-chip::before {
  top: 7px;
  right: 7px;
  bottom: 7px;
  left: 7px;
  border: 2px solid var(--cyan);
  border-radius: 3px;
}

.logo-chip::after {
  top: 15px;
  left: -4px;
  width: 42px;
  height: 2px;
}

.logo > span:last-child {
  display: grid;
  line-height: 1.2;
}

.logo strong {
  font-size: 16px;
  letter-spacing: 0.04em;
}

.logo small {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.52);
  font-size: 8px;
  letter-spacing: 0.15em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
}

.main-nav a:not(.button) {
  color: rgba(255, 255, 255, 0.76);
}

.main-nav a:not(.button):hover {
  color: var(--cyan);
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-small {
  min-height: 38px;
  padding: 0 16px;
  font-size: 13px;
}

.button-primary {
  color: #07221f;
  background: var(--cyan);
}

.button-primary:hover {
  background: #54ded1;
}

.button-outline {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.36);
}

.button-ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.04);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--white);
  background: transparent;
  border: 0;
}

.menu-button span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(110deg, rgba(12, 21, 34, 0.98) 0%, rgba(12, 21, 34, 0.9) 47%, rgba(12, 21, 34, 0.32) 100%),
    repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(36, 199, 183, 0.08) 80px),
    repeating-linear-gradient(0deg, transparent 0, transparent 79px, rgba(36, 199, 183, 0.08) 80px);
}

.hero::after {
  position: absolute;
  right: -120px;
  bottom: -130px;
  width: 440px;
  height: 440px;
  border: 1px solid rgba(36, 199, 183, 0.14);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(36, 199, 183, 0.03), 0 0 0 160px rgba(36, 199, 183, 0.02);
  content: "";
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 760px;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  align-items: center;
  gap: 56px;
  padding-top: 88px;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 15px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.kicker > span {
  width: 26px;
  height: 2px;
  background: currentColor;
}

.kicker.dark {
  color: #0d8277;
}

.hero h1 {
  margin: 0;
  font-size: 62px;
  font-weight: 700;
  line-height: 1.12;
}

.hero h1 strong {
  color: var(--cyan);
}

.hero-text {
  max-width: 590px;
  margin: 25px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 17px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  margin-top: 34px;
}

.spec-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 66px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.spec-strip div {
  padding: 20px 18px 0 0;
}

.spec-strip div + div {
  padding-left: 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.spec-strip strong {
  display: block;
  color: var(--white);
  font-size: 22px;
}

.spec-strip span {
  color: rgba(255, 255, 255, 0.48);
  font-size: 12px;
}

.hero-visual {
  position: relative;
  padding: 26px;
}

.hero-visual::before {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(36, 199, 183, 0.28);
  border-radius: 8px;
  content: "";
}

.hero-visual img {
  min-height: 470px;
  object-fit: cover;
  border-radius: 6px;
  filter: saturate(0.82) contrast(1.08);
}

.floating-panel {
  position: absolute;
  color: var(--white);
  background: rgba(7, 16, 27, 0.92);
  border: 1px solid rgba(36, 199, 183, 0.26);
  border-radius: 7px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(12px);
}

.top-panel {
  top: 48px;
  left: -24px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
}

.top-panel > div {
  display: grid;
}

.top-panel strong {
  font-size: 13px;
}

.top-panel small {
  color: rgba(255, 255, 255, 0.52);
  font-size: 10px;
}

.pulse {
  width: 10px;
  height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(36, 199, 183, 0.14);
}

.bottom-panel {
  right: -20px;
  bottom: 46px;
  width: 176px;
  padding: 15px 16px;
}

.bottom-panel > span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
}

.bottom-panel > strong {
  display: block;
  margin: 5px 0 9px;
  color: var(--cyan);
  font-size: 24px;
}

.meter {
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
}

.meter i {
  display: block;
  width: 38%;
  height: 100%;
  background: var(--cyan);
  border-radius: inherit;
}

.logo-row {
  color: var(--white);
  background: var(--navy-2);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.logo-row-inner {
  display: grid;
  min-height: 86px;
  grid-template-columns: 1.1fr repeat(5, auto);
  align-items: center;
  gap: 28px;
  font-size: 12px;
}

.logo-row-inner > span {
  color: rgba(255, 255, 255, 0.38);
  letter-spacing: 0.1em;
}

.logo-row-inner div {
  color: rgba(255, 255, 255, 0.72);
}

.section {
  padding: 112px 0;
}

.heading-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.7fr);
  align-items: end;
  gap: 60px;
  margin-bottom: 52px;
}

.heading-row.compact {
  grid-template-columns: 1fr;
}

.heading-row h2,
.capability-copy h2,
.contact h2 {
  margin: 0;
  font-size: 43px;
  line-height: 1.2;
}

.heading-row > p {
  margin: 0;
  color: var(--muted);
}

.products {
  background: var(--paper);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 55px rgba(16, 28, 43, 0.1);
}

.product-card.accent-cyan {
  color: var(--white);
  background: var(--navy-2);
  border-color: var(--navy-2);
}

.product-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-code {
  color: #0d8277;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.accent-cyan .product-code {
  color: var(--cyan);
}

.product-type {
  padding: 5px 9px;
  color: var(--muted);
  background: var(--paper);
  border-radius: 4px;
  font-size: 11px;
}

.accent-cyan .product-type {
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.08);
}

.chip-graphic {
  display: grid;
  width: 132px;
  height: 132px;
  margin: 38px auto 32px;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(36, 199, 183, 0.13), rgba(255, 157, 61, 0.08)),
    #17283c;
  border: 1px solid rgba(36, 199, 183, 0.3);
  border-radius: 8px;
}

.chip-graphic span {
  display: grid;
  width: 68px;
  height: 68px;
  place-items: center;
  color: var(--cyan);
  background: #0b1624;
  border: 2px solid var(--cyan);
  border-radius: 6px;
  font-size: 25px;
  font-weight: 800;
}

.product-card h3 {
  margin: 0 0 10px;
  font-size: 23px;
}

.product-card > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.accent-cyan > p {
  color: rgba(255, 255, 255, 0.62);
}

.product-card dl {
  margin: 24px 0 0;
  border-top: 1px solid var(--line);
}

.accent-cyan dl {
  border-color: rgba(255, 255, 255, 0.12);
}

.product-card dl div {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.accent-cyan dl div {
  border-color: rgba(255, 255, 255, 0.12);
}

.product-card dt {
  color: var(--muted);
  font-size: 12px;
}

.accent-cyan dt {
  color: rgba(255, 255, 255, 0.46);
}

.product-card dd {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
}

.capabilities {
  background: var(--white);
}

.capability-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 84px;
}

.capability-media {
  position: relative;
}

.capability-media img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 8px;
  filter: saturate(0.72) contrast(1.05);
}

.media-tag {
  position: absolute;
  right: -26px;
  bottom: 28px;
  min-width: 180px;
  padding: 20px;
  color: var(--white);
  background: var(--navy-2);
  border-left: 4px solid var(--cyan);
  border-radius: 4px;
  box-shadow: 0 22px 48px rgba(12, 21, 34, 0.22);
}

.media-tag span {
  display: block;
  color: rgba(255, 255, 255, 0.48);
  font-size: 11px;
}

.media-tag strong {
  display: block;
  margin-top: 4px;
  color: var(--cyan);
  font-size: 23px;
}

.capability-copy > p:not(.kicker) {
  color: var(--muted);
}

.capability-list {
  display: grid;
  gap: 0;
  margin-top: 32px;
}

.capability-list > div {
  display: grid;
  grid-template-columns: 38px 150px 1fr;
  align-items: start;
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.capability-list > div > span {
  color: #0d8277;
  font-size: 12px;
  font-weight: 800;
}

.capability-list strong {
  font-size: 15px;
}

.capability-list p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.scenarios {
  color: var(--white);
  background: var(--navy);
}

.scenario-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.scenario-head h2 {
  margin: 0;
  font-size: 43px;
  line-height: 1.2;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.scenario-grid article {
  min-height: 220px;
  padding: 34px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.scenario-grid span {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.scenario-grid h3 {
  margin: 30px 0 10px;
  font-size: 22px;
}

.scenario-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.56);
  font-size: 14px;
}

.timeline {
  background: #e8eef1;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.timeline-grid > div {
  padding: 26px;
  background: var(--white);
  border-radius: 8px;
}

.timeline-grid > div > span {
  color: #0d8277;
  font-size: 12px;
  font-weight: 800;
}

.timeline-grid strong {
  display: block;
  margin: 24px 0 9px;
  font-size: 17px;
}

.timeline-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.contact {
  background: var(--white);
}

.contact-box {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  align-items: center;
  gap: 56px;
  padding: 58px;
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(12, 21, 34, 0.98), rgba(17, 31, 49, 0.9)),
    url("../img/hero-circuit.jpg") center / cover;
  border-radius: 8px;
}

.contact-box p {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.6);
}

.contact-side {
  display: grid;
  gap: 10px;
}

.contact-side > span {
  color: rgba(255, 255, 255, 0.42);
  font-size: 11px;
}

.contact-side > strong {
  overflow-wrap: anywhere;
  font-size: 18px;
}

.contact-side .button {
  margin-top: 12px;
}

.footer {
  color: rgba(255, 255, 255, 0.66);
  background: #07101b;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  padding-top: 56px;
  padding-bottom: 32px;
}

.footer-inner strong {
  color: var(--white);
}

.footer-inner p {
  max-width: 520px;
  margin: 9px 0 0;
  font-size: 13px;
}

.footer-nav {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 13px;
}

.footer-bottom {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
}

.footer-bottom a {
  color: inherit;
}

@media (max-width: 1000px) {
  .hero h1 {
    font-size: 49px;
  }

  .hero-grid,
  .capability-grid,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    padding-top: 118px;
    padding-bottom: 70px;
  }

  .hero-visual {
    max-width: 760px;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    display: grid;
    grid-template-columns: 180px 1fr;
    column-gap: 24px;
  }

  .product-top,
  .product-card h3,
  .product-card > p,
  .product-card dl {
    grid-column: 2;
  }

  .chip-graphic {
    grid-row: 1 / 5;
    grid-column: 1;
    align-self: center;
  }

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

@media (max-width: 780px) {
  .shell {
    width: min(calc(100% - 28px), var(--shell));
  }

  .topbar-inner {
    min-height: 68px;
  }

  .menu-button {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: grid;
    padding: 24px 22px 28px;
    background: rgba(12, 21, 34, 0.98);
    gap: 20px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .main-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

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

  .hero-buttons {
    align-items: stretch;
    flex-direction: column;
  }

  .spec-strip {
    grid-template-columns: 1fr;
  }

  .spec-strip div,
  .spec-strip div + div {
    padding: 14px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-left: 0;
  }

  .hero-visual {
    padding: 12px;
  }

  .hero-visual img {
    min-height: 300px;
  }

  .top-panel {
    top: 26px;
    left: 4px;
  }

  .bottom-panel {
    right: 4px;
    bottom: 24px;
  }

  .logo-row-inner {
    display: flex;
    min-height: auto;
    align-items: flex-start;
    flex-direction: column;
    padding: 24px 0;
    gap: 10px;
  }

  .section {
    padding: 78px 0;
  }

  .heading-row {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 34px;
  }

  .heading-row h2,
  .capability-copy h2,
  .scenario-head h2,
  .contact h2 {
    font-size: 32px;
  }

  .product-card {
    display: block;
    padding: 22px;
  }

  .chip-graphic {
    margin: 30px auto;
  }

  .capability-list > div {
    grid-template-columns: 32px 1fr;
  }

  .capability-list p {
    grid-column: 2;
  }

  .media-tag {
    right: 12px;
  }

  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .timeline-grid {
    grid-template-columns: 1fr;
  }

  .contact-box {
    padding: 34px 24px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    justify-content: flex-start;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}