:root {
  --bg: #ecebea;
  --bg-2: #f5f3f1;
  --surface: rgba(255, 255, 255, 0.55);
  --surface-strong: rgba(255, 255, 255, 0.72);
  --line: rgba(60, 60, 60, 0.12);
  --line-strong: rgba(60, 60, 60, 0.2);
  --text: #4b4b4b;
  --text-strong: #3f3f3f;
  --muted: #767676;
  --accent: #5f5f5f;
  --accent-2: #838383;
  --green: #49a36d;
  --amber: #cf9a42;
  --blue: #557ca9;
  --shadow: 0 28px 80px rgba(84, 84, 84, 0.08);
  --radius-xl: 36px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --mono: "IBM Plex Mono", "SFMono-Regular", "Menlo", monospace;
  --sans: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
}

html[data-theme="dark"] {
  --bg: #0d1218;
  --bg-2: #111820;
  --surface: rgba(18, 24, 32, 0.66);
  --surface-strong: rgba(23, 31, 41, 0.82);
  --line: rgba(197, 205, 217, 0.1);
  --line-strong: rgba(197, 205, 217, 0.18);
  --text: #d8dee8;
  --text-strong: #f1f4f8;
  --muted: #98a3b3;
  --accent: #f1f4f8;
  --accent-2: #9ea7b6;
  --green: #53c181;
  --amber: #f0b454;
  --blue: #6ca8ff;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 18%, rgba(122, 122, 122, 0.08), transparent 24%),
    radial-gradient(circle at 85% 14%, rgba(122, 122, 122, 0.06), transparent 22%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  font-family: var(--sans);
  position: relative;
  overflow-x: hidden;
}

.background-grid,
.background-noise,
.background-orb {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.background-grid {
  background-image:
    linear-gradient(to right, rgba(110, 110, 110, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(110, 110, 110, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black, transparent 86%);
}

.background-noise {
  opacity: 0.07;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.8) 0.8px, transparent 0.8px),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.7) 0.7px, transparent 0.7px);
  background-size: 28px 28px, 34px 34px;
  mix-blend-mode: soft-light;
}

.background-orb {
  filter: blur(80px);
  opacity: 0.22;
}

.background-orb-a {
  background: radial-gradient(circle at 18% 20%, rgba(140,140,140,0.32), transparent 28%);
}

.background-orb-b {
  background: radial-gradient(circle at 82% 24%, rgba(120,120,120,0.26), transparent 26%);
}

html[data-theme="dark"] .background-orb-a {
  background: radial-gradient(circle at 18% 20%, rgba(108,168,255,0.22), transparent 30%);
}

html[data-theme="dark"] .background-orb-b {
  background: radial-gradient(circle at 82% 24%, rgba(83,193,129,0.14), transparent 28%);
}

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

.shell {
  position: relative;
  z-index: 1;
  width: min(1360px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 22px 0 40px;
}

.panel {
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 16px 18px;
  border-radius: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-strong);
  font-family: var(--mono);
}

.brand-name {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.brand-mark {
  font-size: 1.55rem;
  font-weight: 900;
}

.brand-mark-right {
  letter-spacing: -0.18em;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
}

.nav a,
.toggle-btn {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  background: transparent;
  font: inherit;
  cursor: pointer;
  transition: 160ms ease;
}

.nav a:hover,
.toggle-btn:hover {
  border-color: var(--line);
  color: var(--text-strong);
  background: rgba(255, 255, 255, 0.14);
}

.controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.toggle-group {
  display: inline-flex;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.toggle-btn.active {
  color: var(--text-strong);
  background: var(--surface-strong);
  border-color: var(--line-strong);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  gap: 22px;
  margin-top: 22px;
  padding: 28px;
  border-radius: var(--radius-xl);
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--muted);
}

.hero h1 {
  margin: 18px 0 14px;
  font-family: var(--mono);
  font-size: clamp(4rem, 8.5vw, 7.4rem);
  line-height: 0.92;
  letter-spacing: -0.09em;
  color: var(--accent);
}

.hero-symbol {
  display: inline-block;
  margin-right: 8px;
  font-weight: 900;
}

.hero-symbol-right {
  margin-left: 10px;
  letter-spacing: -0.2em;
}

.hero-lead {
  max-width: 62ch;
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.78;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.14);
  color: var(--text-strong);
  font-weight: 700;
}

.button-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: transparent;
}

html[data-theme="light"] .button-primary {
  color: #fff;
}

.hero-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.strip-item,
.hero-card,
.value-card,
.flow-card,
.deploy-card,
.footer {
  border: 1px solid var(--line);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.strip-item {
  padding: 14px 16px;
  border-radius: 18px;
}

.strip-item span,
.card-topline,
.micro-label,
.flow-index {
  display: block;
  margin-bottom: 8px;
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.strip-item strong {
  color: var(--text-strong);
  font-size: 1rem;
}

.hero-visual {
  display: grid;
  gap: 14px;
}

.hero-card {
  border-radius: 28px;
  padding: 18px;
}

.hero-card-main {
  min-height: 300px;
}

.signal-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.signal-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
}

.signal-row strong {
  color: var(--text-strong);
}

.signal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.signal-green { background: var(--green); }
.signal-amber { background: var(--amber); }
.signal-blue { background: var(--blue); }

.bars {
  display: flex;
  align-items: end;
  gap: 6px;
  margin-top: 22px;
  height: 74px;
}

.bars span {
  flex: 1;
  min-height: 16px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(110,110,110,0.42));
}

html[data-theme="dark"] .bars span {
  background: linear-gradient(180deg, rgba(108,168,255,0.82), rgba(80,98,126,0.34));
}

.bars .tall { min-height: 58px; }
.bars .mid { min-height: 38px; }

.hero-code {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 1.18rem;
  line-height: 1.8;
  color: var(--text-strong);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.value-card {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.value-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.value-card h2,
.section-copy h2 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.08;
  letter-spacing: -0.05em;
  color: var(--text-strong);
}

.value-card p,
.value-card li,
.section-copy p,
.flow-card p,
.deploy-card p,
.footer {
  color: var(--muted);
  line-height: 1.72;
}

.value-card ul {
  margin: 16px 0 0;
  padding-left: 18px;
}

.value-card li {
  margin: 8px 0;
}

.architecture,
.deploy {
  margin-top: 22px;
  padding: 28px;
  border-radius: var(--radius-xl);
}

.section-copy.narrow {
  max-width: 720px;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.flow-card,
.deploy-card {
  padding: 20px;
  border-radius: 24px;
}

.flow-card h3,
.deploy-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
  color: var(--text-strong);
  letter-spacing: -0.04em;
}

.deploy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}


.contact {
  margin-top: 22px;
  padding: 28px;
  border-radius: var(--radius-xl);
}

.contact-form {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

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

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-strong);
  padding: 14px 16px;
  font: inherit;
}

html[data-theme="light"] .contact-form input,
html[data-theme="light"] .contact-form textarea {
  background: rgba(255, 255, 255, 0.8);
}

.contact-form textarea {
  min-height: 150px;
  resize: vertical;
}

.panel-lite {
  padding: 18px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
}

html[data-theme="light"] .panel-lite {
  background: rgba(255, 255, 255, 0.72);
}

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

.contact-note p {
  margin: 0;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.form-status {
  min-height: 22px;
  color: var(--muted);
}

.form-status[data-state="success"] {
  color: var(--green);
}

.form-status[data-state="error"] {
  color: var(--amber);
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 22px;
  padding: 18px 22px;
  border-radius: 24px;
}

.footer-brand {
  font-family: var(--mono);
  font-weight: 800;
  color: var(--text-strong);
  letter-spacing: -0.05em;
}

.footer-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

@media (max-width: 1180px) {
  .topbar,
  .hero,
  .value-grid,
  .flow-grid,
  .deploy-grid,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    justify-items: stretch;
  }

  .nav,
  .controls {
    justify-content: center;
  }

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

@media (max-width: 760px) {
  .shell {
    width: min(100vw - 24px, 1360px);
    padding: 12px 0 26px;
  }

  .topbar,
  .hero,
  .architecture,
  .deploy,
  .footer {
    padding: 18px;
    border-radius: 22px;
  }

  .hero h1 {
    font-size: clamp(3.2rem, 16vw, 5.2rem);
  }

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

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