:root {
  color-scheme: dark;
  --bg: #07090b;
  --panel: rgba(13, 17, 20, 0.82);
  --panel-strong: rgba(18, 24, 28, 0.94);
  --line: rgba(165, 190, 198, 0.22);
  --text: #f4f7f4;
  --muted: #aab7b6;
  --soft: #728280;
  --green: #39ff9f;
  --amber: #ffca63;
  --cyan: #66e6ff;
  --danger: #ff667d;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 12%, rgba(57, 255, 159, 0.1), transparent 24rem),
    linear-gradient(140deg, #07090b 0%, #101417 42%, #090b0e 100%);
  overflow-x: hidden;
}

#signal-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  opacity: 0.38;
  pointer-events: none;
  z-index: -1;
}

#ripple-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.42;
  mix-blend-mode: screen;
}

body > *:not(#signal-canvas):not(#ripple-canvas):not(.auth-figure) {
  position: relative;
  z-index: 1;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 9, 11, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(57, 255, 159, 0.55);
  border-radius: 50%;
  color: var(--green);
  font-weight: 800;
  letter-spacing: 0;
  background: rgba(57, 255, 159, 0.08);
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 28px);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--green);
}

main {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.hero {
  min-height: min(680px, calc(100svh - 160px));
  display: flex;
  align-items: center;
  padding: 42px 0 30px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
  width: 100%;
}

.hero-copy,
.hero-grid,
.ops-console {
  min-width: 0;
  max-width: 100%;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 5.2vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.04rem;
  letter-spacing: 0;
}

.hero-text,
.section-heading p,
.command-section p,
.start-panel p,
.flow-step p,
.safety-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-text {
  max-width: min(640px, 100%);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 800;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

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

.button.primary {
  color: #04110b;
  border-color: transparent;
  background: var(--green);
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.ops-console,
.flow-step,
.channel-board,
.terminal,
.safety-grid article,
.start-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.ops-console {
  min-height: 520px;
  padding: clamp(18px, 3vw, 30px);
  position: relative;
  overflow: hidden;
}

.ops-console::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, black, transparent);
}

.console-topline,
.topology,
.metrics-strip {
  position: relative;
  z-index: 1;
}

.console-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.live-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.live-dot::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 22px var(--green);
}

.topology {
  display: grid;
  grid-template-columns: 1fr minmax(154px, 0.9fr) 1fr;
  align-items: center;
  gap: 18px;
  min-height: 350px;
}

.node-list {
  display: grid;
  gap: 12px;
}

.node-list span {
  min-height: 42px;
  display: flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 0 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

.node-list.left span:nth-child(2),
.node-list.right span:nth-child(1) {
  color: var(--text);
  border-color: rgba(57, 255, 159, 0.4);
  background: rgba(57, 255, 159, 0.07);
}

.gateway-core {
  position: relative;
  display: grid;
  min-height: 170px;
  place-items: center;
  align-content: center;
  text-align: center;
  border: 1px solid rgba(57, 255, 159, 0.45);
  border-radius: 50%;
  background: rgba(57, 255, 159, 0.08);
}

.gateway-core strong {
  font-size: 1.35rem;
}

.gateway-core small {
  color: var(--muted);
}

.pulse-ring {
  position: absolute;
  inset: -16px;
  border: 1px solid rgba(57, 255, 159, 0.18);
  border-radius: 50%;
  animation: pulse 2.7s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(0.94);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.04);
    opacity: 1;
  }
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.metrics-strip div {
  min-height: 92px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.22);
}

.metrics-strip strong {
  display: block;
  margin-bottom: 6px;
  color: var(--cyan);
  font-size: 1.4rem;
}

.metrics-strip span {
  color: var(--muted);
  font-size: 0.84rem;
}

.section {
  padding: 78px 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-heading.compact {
  margin-bottom: 0;
}

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

.flow-step {
  min-height: 235px;
  padding: 22px;
}

.step-index {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--amber);
  font-weight: 900;
}

.split-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: start;
  gap: clamp(24px, 5vw, 54px);
}

.channel-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 18px;
}

.channel-board button {
  min-height: 70px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background 140ms ease;
}

.channel-board button:hover,
.channel-board button:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(57, 255, 159, 0.55);
  background: rgba(57, 255, 159, 0.08);
}

#channel-output {
  grid-column: 1 / -1;
  min-height: 54px;
  padding: 16px;
  border: 1px solid rgba(102, 230, 255, 0.22);
  border-radius: var(--radius);
  color: var(--cyan);
  background: rgba(102, 230, 255, 0.06);
}

.command-section {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: center;
  gap: clamp(24px, 5vw, 56px);
}

.terminal {
  overflow: hidden;
  background: rgba(0, 0, 0, 0.62);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--soft);
}

.terminal-bar span:first-child {
  background: var(--danger);
}

.terminal-bar span:nth-child(2) {
  background: var(--amber);
}

.terminal-bar span:nth-child(3) {
  background: var(--green);
}

.terminal-bar strong {
  margin-left: 8px;
  font-size: 0.86rem;
}

pre {
  margin: 0;
  padding: 26px;
  overflow-x: auto;
}

code {
  color: #d9ffe9;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.96rem;
  line-height: 1.9;
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.safety-grid article {
  min-height: 170px;
  padding: 22px;
  box-shadow: none;
  background: var(--panel-strong);
}

.start-panel {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 70px;
  padding: clamp(22px, 5vw, 38px);
  background:
    linear-gradient(135deg, rgba(57, 255, 159, 0.12), transparent 44%),
    var(--panel-strong);
}

.start-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.start-links a {
  display: flex;
  min-height: 64px;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 26px clamp(18px, 5vw, 64px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.auth-page {
  width: 100vw;
  max-width: 100vw;
  min-width: 0;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: max(20px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  overflow-x: hidden;
}

.auth-page * {
  min-width: 0;
}

.auth-shell {
  width: min(100%, 460px);
  max-width: calc(100vw - 32px);
  margin: 0 auto;
}

.auth-card {
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  padding: clamp(24px, 5vw, 38px);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background:
    radial-gradient(circle at 20% 0%, rgba(57, 255, 159, 0.16), transparent 28%),
    linear-gradient(135deg, transparent, rgba(102, 230, 255, 0.06), transparent);
  opacity: .7;
  pointer-events: none;
}

.auth-card > * {
  position: relative;
  z-index: 1;
}

.auth-figure {
  position: fixed;
  bottom: 0;
  width: min(28vw, 360px);
  max-height: 58vh;
  object-fit: contain;
  pointer-events: none;
  z-index: 0;
  opacity: .92;
  filter: drop-shadow(0 24px 44px rgba(0, 0, 0, .42));
}

.auth-figure-left {
  left: clamp(10px, 3vw, 54px);
}

.auth-figure-right {
  right: clamp(10px, 3vw, 54px);
}

.auth-brand {
  display: inline-flex;
  margin-bottom: 26px;
}

.auth-card h1 {
  margin-bottom: 14px;
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  line-height: 1.04;
}

.auth-copy {
  max-width: 420px;
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.6;
}

.auth-message {
  min-height: 22px;
  margin: 0 0 16px;
  color: var(--muted);
  font-weight: 700;
}

.auth-message[data-state="error"] {
  color: var(--danger);
}

.auth-message[data-state="ok"] {
  color: var(--green);
}

.auth-form {
  display: grid;
  gap: 12px;
  max-width: 100%;
}

.auth-form label {
  color: var(--text);
  font-weight: 800;
}

.auth-form input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
}

.auth-form input:focus {
  border-color: rgba(57, 255, 159, 0.72);
  outline: 2px solid rgba(57, 255, 159, 0.16);
  outline-offset: 2px;
}

.auth-submit {
  width: 100%;
  margin-top: 12px;
}

.auth-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin: 24px 0 14px;
  color: var(--muted);
  font-size: .92rem;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  height: 1px;
  background: var(--line);
}

.oauth-button {
  min-height: 48px;
  border: 1px solid rgba(165, 190, 198, 0.38);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 900;
}

.oauth-button:hover,
.oauth-button:focus-visible {
  border-color: rgba(57, 255, 159, .68);
  outline: none;
  background: rgba(57, 255, 159, 0.08);
}

.google-mark {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(from -30deg, #4285f4, #4285f4 25%, #34a853 25%, #34a853 50%, #fbbc05 50%, #fbbc05 75%, #ea4335 75%);
  color: #fff;
  font-weight: 950;
}

@media (max-width: 940px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .hero-grid,
  .split-section,
  .command-section,
  .start-panel {
    grid-template-columns: 1fr;
  }

  .ops-console {
    min-height: auto;
  }

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

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

  .auth-figure {
    display: none;
  }
}

@media (max-width: 620px) {
  .auth-page main {
    width: min(100%, 270px);
    max-width: calc(100vw - 32px);
  }

  main {
    width: calc(100vw - 32px);
  }

  h1 {
    font-size: clamp(2rem, 8.5vw, 2.3rem);
    line-height: 1.08;
    overflow-wrap: anywhere;
  }

  .hero-text {
    font-size: 1rem;
    max-width: min(340px, 100%);
  }

  .auth-shell {
    width: min(100%, 270px);
  }

  .auth-card h1 {
    font-size: clamp(1.8rem, 7.4vw, 2.1rem);
    overflow-wrap: anywhere;
  }

  .auth-card {
    padding: 20px;
  }

  .auth-copy {
    font-size: 1rem;
    max-width: 300px;
  }

  .auth-form {
    max-width: 100%;
  }

  .ops-console {
    padding: 18px;
  }

  .console-topline {
    font-size: 0.72rem;
    justify-content: flex-start;
    letter-spacing: 0.05em;
  }

  .hero-actions,
  .metrics-strip,
  .flow,
  .channel-board,
  .start-links {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .topology {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 28px 0;
  }

  .gateway-core {
    width: 170px;
    min-height: 170px;
    margin: 4px auto;
  }

  .section {
    padding: 58px 0;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}