:root {
  --bg: #050712;
  --bg-secondary: rgba(6, 10, 22, 0.84);
  --panel: rgba(8, 13, 28, 0.82);
  --line: rgba(72, 122, 255, 0.18);
  --text: #f2f7ff;
  --muted: #a7b4d1;
  --cyan: #5be9ff;
  --blue: #3f7dff;
  --violet: #cb63ff;
  --glow: 0 0 40px rgba(75, 231, 255, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Space Grotesk", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 50% 14%, rgba(141, 247, 255, 0.1), transparent 7%),
    radial-gradient(circle at 24% 34%, rgba(65, 225, 255, 0.1), transparent 18%),
    radial-gradient(circle at 76% 34%, rgba(209, 90, 255, 0.11), transparent 18%),
    radial-gradient(circle at 50% 22%, rgba(61, 119, 255, 0.1), transparent 20%),
    linear-gradient(180deg, #010208 0%, #030611 26%, #040918 52%, #030611 78%, #010208 100%);
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(74, 122, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 122, 255, 0.025) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(circle at 50% 18%, black 20%, transparent 72%);
  opacity: 0.16;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 16%, rgba(117, 245, 255, 0.1), transparent 8%),
    radial-gradient(circle at 36% 18%, rgba(80, 219, 255, 0.06), transparent 12%),
    radial-gradient(circle at 64% 18%, rgba(208, 101, 255, 0.07), transparent 12%);
  filter: blur(42px);
  opacity: 0.7;
}

.site-shell {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 20px;
  position: sticky;
  top: 16px;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(5, 9, 20, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 20px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 12px 28px rgba(0, 0, 0, 0.2);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  color: var(--text);
  text-decoration: none;
}

.brand-mark,
.section-kicker,
.eyebrow,
.tier {
  font-family: "Orbitron", sans-serif;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand-mark {
  font-size: 1rem;
  font-weight: 800;
}

.brand-sub {
  color: var(--muted);
  font-size: 0.72rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease;
}

.nav a.is-active,
.nav a:hover,
.nav a:focus-visible {
  color: var(--text);
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 18px 0 24px;
  text-align: center;
}

.hero-copy-centered {
  max-width: 980px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-copy-centered .eyebrow {
  margin: 2px 0 0;
}

.hero-copy-centered h1 {
  max-width: 860px;
}

.hero-copy-centered .hero-text {
  max-width: 700px;
  margin-top: 0;
}

.hero-copy-centered .hero-actions {
  justify-content: center;
  margin-top: 16px;
}

.eyebrow,
.section-kicker,
.tier {
  color: var(--cyan);
  font-size: 0.72rem;
}

.hero h1,
.section-heading h2,
.contact h2 {
  font-family: "Orbitron", sans-serif;
  margin: 8px 0 12px;
  line-height: 1.08;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.7rem);
  text-shadow: 0 0 30px rgba(75, 231, 255, 0.16);
}

.hero-text,
.pitch-line,
.story p,
.architecture p,
.card p,
.definition-box p,
.contact p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.9rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

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

.button.primary {
  color: #031018;
  background: linear-gradient(90deg, var(--cyan), #8aa2ff 55%, #f07bff);
  box-shadow: 0 12px 32px rgba(94, 123, 255, 0.3);
}

.button.accent {
  color: #031018;
  background: linear-gradient(90deg, #8ef7ff, #4be7ff 46%, #b45fff 100%);
  box-shadow: 0 12px 28px rgba(88, 174, 255, 0.24);
}

.button.secondary {
  color: var(--text);
  border-color: rgba(114, 153, 255, 0.34);
  background: rgba(8, 14, 33, 0.6);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
  max-width: 860px;
}

.text-link {
  color: var(--cyan);
  text-decoration: none;
  font-weight: 700;
}

.text-link:hover {
  text-decoration: underline;
}

.hero-metrics div,
.card,
.architecture-grid article,
.story-grid article {
  position: relative;
  background: linear-gradient(180deg, rgba(6, 10, 22, 0.5), rgba(3, 6, 14, 0.34));
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 22px;
  padding: 14px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 12px 32px rgba(0, 0, 0, 0.24),
    0 0 18px rgba(45, 102, 255, 0.025);
}

.hero-metrics div::before,
.card::before,
.architecture-grid article::before,
.story-grid article::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 26%),
    radial-gradient(circle at top left, rgba(91, 234, 255, 0.06), transparent 34%);
  opacity: 0.85;
  pointer-events: none;
}

.hero-metrics strong,
.card h3,
.architecture h3,
.story h3 {
  display: block;
  margin-bottom: 8px;
  font-size: 1rem;
}

.hero-metrics span {
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.84rem;
}

.hero-visual {
  position: relative;
  min-height: 470px;
  display: grid;
  place-items: center;
}

.hero-visual-centered {
  width: 100%;
  max-width: 740px;
  min-height: 320px;
  margin-bottom: 2px;
}

.hero-logo {
  display: block;
  width: min(100%, 400px);
  position: relative;
  z-index: 3;
  filter: drop-shadow(0 0 36px rgba(90, 226, 255, 0.18));
  animation: pulse 5s ease-in-out infinite;
}

.logo-glow,
.logo-orbit {
  position: absolute;
  border-radius: 999px;
}

.logo-glow {
  width: 320px;
  height: 320px;
  background:
    radial-gradient(circle, rgba(116, 242, 255, 0.24), rgba(73, 116, 255, 0.12), rgba(210, 101, 255, 0.06), transparent 72%);
  z-index: 1;
  filter: blur(30px);
}

.logo-orbit {
  border: 1px solid rgba(103, 197, 255, 0.24);
  inset: 8% 16%;
}

.orbit-one {
  transform: rotate(24deg);
  box-shadow: 0 0 90px rgba(62, 166, 255, 0.18);
}

.orbit-two {
  inset: 16% 12%;
  transform: rotate(-16deg);
  border-color: rgba(212, 93, 255, 0.24);
}

.panel {
  position: relative;
  margin-top: 28px;
  padding: 34px;
  background: linear-gradient(180deg, rgba(4, 8, 18, 0.28), rgba(2, 5, 12, 0.18));
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.025);
  border-radius: 28px;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.02),
    0 18px 48px rgba(0, 0, 0, 0.18),
    0 0 20px rgba(50, 92, 220, 0.025);
}

.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent 18%);
  pointer-events: none;
}

.panel::before {
  content: "";
  position: absolute;
  inset: auto -10% -30% -10%;
  height: 60%;
  background: radial-gradient(circle at center, rgba(73, 132, 255, 0.06), transparent 60%);
  pointer-events: none;
  opacity: 1;
  filter: blur(20px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.section-heading h2,
.contact h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.pitch-line {
  max-width: 980px;
  font-size: clamp(1.14rem, 2.4vw, 1.42rem);
}

.story-grid,
.architecture-grid,
.cards {
  display: grid;
  gap: 18px;
}

.story-grid article:nth-child(odd),
.cards .card:nth-child(odd),
.architecture-grid article:nth-child(odd) {
  transform: translateY(-4px);
}

.story-grid article:nth-child(even),
.cards .card:nth-child(even),
.architecture-grid article:nth-child(even) {
  transform: translateY(6px);
}

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

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

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

.definition-box {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(6, 12, 26, 0.42), rgba(3, 7, 16, 0.26));
  backdrop-filter: blur(12px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 12px 28px rgba(0, 0, 0, 0.16);
}

.definition-main {
  margin-top: 0;
  color: var(--text);
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 28px;
  padding: 24px 12px 0;
  color: var(--muted);
}

.footer strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.footer p {
  margin: 0;
}

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

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.page-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 28px;
}

.page-hero-tight {
  margin-top: 42px;
}

.page-hero-copy h1 {
  font-family: "Orbitron", sans-serif;
  margin: 12px 0 18px;
  line-height: 1.08;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
}

.mini-visual,
.status-card,
.contact-badges {
  min-height: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(5, 10, 22, 0.48), rgba(3, 6, 14, 0.28));
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.03);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 12px 28px rgba(0, 0, 0, 0.16);
}

.mini-logo {
  width: min(100%, 360px);
  filter: drop-shadow(0 0 35px rgba(90, 226, 255, 0.32));
}

.status-pill {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.04);
  background: linear-gradient(180deg, rgba(7, 14, 30, 0.9), rgba(4, 8, 18, 0.88));
  font-size: 0.94rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 0 12px rgba(72, 144, 255, 0.04);
}

.stack-list {
  display: grid;
  gap: 16px;
}

.stack-item {
  padding: 22px 24px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  background: linear-gradient(180deg, rgba(5, 10, 22, 0.5), rgba(3, 6, 14, 0.3));
  backdrop-filter: blur(12px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 12px 28px rgba(0, 0, 0, 0.16);
}

.stack-item h3,
.info-item strong {
  margin: 8px 0;
}

.stack-item p,
.info-item span {
  color: var(--muted);
  line-height: 1.7;
}

.code-panel {
  overflow: hidden;
}

.code-block {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  border-radius: 20px;
  background: #020611;
  border: 1px solid rgba(112, 160, 255, 0.14);
  color: #d5eeff;
  line-height: 1.7;
  font-size: 0.95rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 0 18px rgba(52, 102, 255, 0.04);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
}

.info-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.info-item {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  background: rgba(4, 8, 18, 0.38);
  backdrop-filter: blur(12px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 10px 22px rgba(0, 0, 0, 0.14);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 10px;
  color: var(--text);
}

.contact-form label.full {
  grid-column: 1 / -1;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  color: var(--text);
  font: inherit;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  background: linear-gradient(180deg, rgba(4, 8, 18, 0.66), rgba(3, 6, 14, 0.5));
  outline: none;
  backdrop-filter: blur(10px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.02),
    0 0 12px rgba(45, 96, 255, 0.03);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: rgba(75, 231, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(75, 231, 255, 0.08);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(6, 10, 22, 0.46), rgba(3, 6, 14, 0.28));
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 16px 18px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.14);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
}

.faq-item p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.9rem;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 50;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(5, 9, 20, 0.86);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.28);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes pulse {
  0%, 100% {
    transform: scale(0.98);
  }
  50% {
    transform: scale(1.02);
  }
}

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

  .hero-visual {
    min-height: 320px;
  }

  .hero-logo {
    width: min(100%, 340px);
  }
}

@media (max-width: 820px) {
  .site-shell {
    width: min(100% - 24px, 1240px);
  }

  .topbar,
  .contact {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-metrics,
  .story-grid,
  .cards,
  .cards.three-up,
  .contact-form {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 24px;
  }
}

@media (max-width: 560px) {
  .topbar {
    border-radius: 18px;
    top: 8px;
  }

  .nav {
    gap: 12px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-visual {
    min-height: 220px;
  }

  .hero-logo {
    width: 100%;
  }

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