:root {
  --bg: #09111f;
  --panel: rgba(14, 28, 49, 0.72);
  --line: rgba(151, 201, 255, 0.18);
  --text: #ebf5ff;
  --muted: #9cb8d4;
  --accent: #6ce8d7;
  --accent-strong: #59b8ff;
  --highlight: #ffe98a;
  --shadow: 0 30px 70px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(89, 184, 255, 0.18), transparent 28%),
    radial-gradient(circle at left center, rgba(108, 232, 215, 0.12), transparent 24%),
    linear-gradient(180deg, #07101d 0%, #0a1628 42%, #09111f 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 92%);
}

.site-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding-bottom: 64px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(108, 232, 215, 0.95), rgba(89, 184, 255, 0.5)),
    #102641;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 12px 24px rgba(89, 184, 255, 0.18);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong,
.nav a,
.eyebrow,
.hero-metrics dt,
.button,
.chip,
.timeline-step strong {
  font-family: "Space Grotesk", sans-serif;
}

.brand-text small {
  color: var(--muted);
  margin-top: 2px;
}

.nav {
  display: flex;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

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

.hero {
  min-height: 88vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 32px;
}

.eyebrow {
  margin: 0 0 16px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--accent);
}

.hero h1,
.section-heading h2,
.contact-card h2 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 5.6rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.hero-text,
.section-heading p,
.intro-strip p,
.product-card p,
.scenario-card p,
.advantage-item p,
.contact-card p,
.timeline-step p {
  color: var(--muted);
  line-height: 1.8;
}

.hero-text {
  max-width: 660px;
  margin: 24px 0 0;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-width: 136px;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button-primary {
  border: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #06111f;
  box-shadow: 0 18px 36px rgba(89, 184, 255, 0.22);
}

.button-secondary {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.hero-metrics {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin: 40px 0 0;
}

.hero-metrics div {
  min-width: 120px;
}

.hero-metrics dt {
  font-size: 2rem;
  color: var(--highlight);
}

.hero-metrics dd {
  margin: 6px 0 0;
  color: var(--muted);
}

.hero-visual {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.radar-panel,
.card,
.scenario-card,
.contact-card,
.timeline-step,
.floating-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.radar-panel {
  position: relative;
  width: min(520px, 100%);
  aspect-ratio: 1 / 1;
  border-radius: 32px;
  overflow: hidden;
}

.radar-grid {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle, transparent 8%, rgba(108, 232, 215, 0.14) 8.5%, transparent 9%),
    radial-gradient(circle, transparent 22%, rgba(108, 232, 215, 0.14) 22.5%, transparent 23%),
    radial-gradient(circle, transparent 36%, rgba(108, 232, 215, 0.14) 36.5%, transparent 37%),
    radial-gradient(circle, transparent 49%, rgba(108, 232, 215, 0.14) 49.5%, transparent 50%),
    linear-gradient(90deg, transparent 49.7%, rgba(108, 232, 215, 0.18) 50%, transparent 50.3%),
    linear-gradient(transparent 49.7%, rgba(108, 232, 215, 0.18) 50%, transparent 50.3%);
}

.radar-sweep {
  position: absolute;
  inset: 0;
  background: conic-gradient(
    from 20deg,
    rgba(108, 232, 215, 0.45) 0deg,
    rgba(108, 232, 215, 0.12) 24deg,
    transparent 65deg,
    transparent 360deg
  );
  animation: sweep 4s linear infinite;
  transform-origin: center;
}

.target {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--highlight);
  box-shadow: 0 0 18px rgba(255, 233, 138, 0.8);
}

.target::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid rgba(255, 233, 138, 0.4);
  animation: pulse 2.4s infinite;
}

.target-a {
  top: 26%;
  left: 68%;
}

.target-b {
  top: 55%;
  left: 32%;
}

.target-c {
  top: 72%;
  left: 58%;
}

.floating-card {
  position: absolute;
  width: 220px;
  padding: 18px;
  border-radius: 24px;
}

.floating-card span,
.data-card span {
  color: var(--accent);
  font-size: 0.85rem;
}

.floating-card strong,
.data-card strong {
  display: block;
  margin: 8px 0;
  font-size: 1.35rem;
}

.floating-card small {
  color: var(--muted);
}

.card-top {
  top: 10%;
  right: -4%;
  animation: drift 6s ease-in-out infinite;
}

.card-bottom {
  bottom: 10%;
  left: -4%;
  animation: drift 7s ease-in-out infinite reverse;
}

.section {
  padding: 72px 0;
}

.intro-strip {
  padding-top: 8px;
}

.intro-strip p {
  margin: 0;
  font-size: 1.05rem;
  padding: 24px 28px;
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.025);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading h2 {
  font-size: clamp(2rem, 3vw, 3.8rem);
}

.product-grid,
.scenario-grid {
  display: grid;
  gap: 20px;
}

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

.card,
.scenario-card,
.timeline-step {
  border-radius: 28px;
}

.product-card {
  padding: 28px;
}

.product-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  margin-bottom: 8px;
  border-radius: 22px;
  background:
    radial-gradient(circle at top, rgba(255, 233, 138, 0.1), transparent 45%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.product-media img {
  max-width: 100%;
  max-height: 210px;
  object-fit: contain;
  filter: drop-shadow(0 18px 36px rgba(0, 0, 0, 0.35));
}

.product-media-tall img {
  max-height: 260px;
}

.chip {
  display: inline-flex;
  padding: 7px 10px;
  border-radius: 999px;
  color: #06111f;
  background: var(--highlight);
  font-size: 0.82rem;
}

.product-card h3,
.scenario-card h3,
.advantage-item h3 {
  margin: 18px 0 12px;
  font-size: 1.4rem;
}

.product-card ul {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.product-card li {
  padding: 10px 0;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.dark-section {
  position: relative;
}

.dark-section::before {
  content: "";
  position: absolute;
  inset: 20px -24px;
  border-radius: 40px;
  background: linear-gradient(135deg, rgba(17, 38, 63, 0.9), rgba(9, 17, 31, 0.7));
  z-index: -1;
}

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

.scenario-card {
  padding: 26px;
  min-height: 220px;
  background:
    linear-gradient(180deg, rgba(108, 232, 215, 0.08), transparent 45%),
    rgba(8, 19, 34, 0.9);
}

.advantage-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
}

.advantage-panel {
  display: grid;
  gap: 18px;
}

.advantage-item,
.data-card {
  padding: 26px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.data-panel {
  display: grid;
  gap: 18px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.timeline-step {
  padding: 24px;
}

.timeline-step strong {
  color: var(--accent);
  font-size: 2rem;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 28px;
  padding: 32px;
  border-radius: 32px;
}

.contact-form {
  display: grid;
  gap: 16px;
}

.contact-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.contact-meta span {
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 0.9rem;
}

.contact-meta strong {
  font-size: 1.2rem;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 14px 16px;
  font: inherit;
}

.contact-form button {
  cursor: pointer;
}

.keyword-grid,
.faq-list {
  display: grid;
  gap: 18px;
}

.keyword-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.keyword-card,
.faq-item {
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.keyword-card {
  display: block;
  padding: 24px;
  color: var(--text);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.keyword-card:hover {
  transform: translateY(-3px);
  border-color: rgba(108, 232, 215, 0.45);
}

.keyword-card strong,
.faq-item h3 {
  display: block;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.keyword-card span,
.faq-item p {
  color: var(--muted);
  line-height: 1.8;
}

.faq-item {
  padding: 24px;
}

.contact-meta a {
  color: var(--text);
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes sweep {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.8);
    opacity: 0.15;
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@media (max-width: 1100px) {
  .hero,
  .advantage-layout,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .scenario-grid,
  .timeline,
  .keyword-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
    padding-top: 28px;
  }

  .hero-visual {
    min-height: 460px;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 20px, 1200px);
  }

  .topbar {
    gap: 14px;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .hero-actions,
  .hero-metrics {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-grid,
  .scenario-grid,
  .timeline,
  .keyword-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 360px;
  }

  .radar-panel {
    border-radius: 24px;
  }

  .floating-card {
    width: 180px;
    padding: 14px;
  }

  .card-top {
    right: 2%;
  }

  .card-bottom {
    left: 2%;
  }
}