@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&family=Syne:wght@600;700;800&display=swap');

:root {
  --bg: #050a14;
  --bg-deep: #03070f;
  --bg-elevated: #0a1220;
  --border: rgba(0, 212, 255, 0.12);
  --border-strong: rgba(0, 212, 255, 0.28);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --cyan: #00d4ff;
  --blue: #1a6fff;
  --green: #00e676;
  --grad: linear-gradient(135deg, #00d4ff 0%, #1a6fff 100%);
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "DM Sans", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --header-h: 76px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --drawer-w: min(460px, 100vw);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body { width: 100%; max-width: 100%; overflow-x: clip; }

body.arc-skin {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
body.arc-skin a { color: inherit; text-decoration: none; }
body.arc-skin img { max-width: 100%; display: block; }
body.arc-skin.menu-open { overflow: hidden; }

.arc-page {
  position: relative;
  z-index: 1;
  overflow-x: clip;
  transition: filter 0.45s ease, opacity 0.45s ease;
}
.arc-page::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 40;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
body.menu-open .arc-page {
  filter: brightness(0.45);
  opacity: 0.9;
  pointer-events: none;
}

.arc-wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.arc-section { padding: 128px 0; position: relative; }
.arc-section-dim {
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 212, 255, 0.04), transparent 55%),
    var(--bg-deep);
}

/* Custom cursor + spotlight (fine pointers only) */
.arc-cursor {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #fff;
  pointer-events: none;
  z-index: 10050;
  mix-blend-mode: difference;
  transform: translate(-50%, -50%);
  transition: width 0.25s var(--ease), height 0.25s var(--ease), opacity 0.25s;
}
.arc-cursor i {
  position: absolute;
  inset: -14px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 50%;
  transition: transform 0.35s var(--ease), opacity 0.35s;
}
.arc-cursor.is-hover { width: 6px; height: 6px; }
.arc-cursor.is-hover i { transform: scale(1.8); opacity: 0.5; }
.arc-spotlight {
  display: none;
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(600px circle at var(--sx, 50%) var(--sy, 30%), rgba(0, 212, 255, 0.07), transparent 42%);
  transition: opacity 0.4s;
}
@media (pointer: fine) {
  body.arc-skin { cursor: none; }
  body.arc-skin a, body.arc-skin button { cursor: none; }
  .arc-cursor, .arc-spotlight { display: block; }
  body.menu-open .arc-spotlight { opacity: 0; }
}

/* Type */
.arc-brand-mark {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.92;
  color: #fff;
}
.arc-brand-mark span { color: var(--cyan); }

.arc-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
  padding: 7px 12px 7px 10px;
  border: 1px solid rgba(0, 212, 255, 0.22);
  background: rgba(0, 212, 255, 0.06);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.08);
}
.arc-kicker::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: arcPulse 2s infinite;
}
.arc-section-head { max-width: 680px; margin-bottom: 64px; }
.arc-section-head h2 {
  font-family: Syne, var(--font-display);
  font-weight: 800;
  letter-spacing: -0.045em;
  font-size: clamp(2.35rem, 5vw, 3.7rem);
  line-height: 1.05;
  margin-bottom: 18px;
}
.arc-section-head h2 em {
  font-style: normal;
  background: linear-gradient(135deg, #fff 10%, #00d4ff 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.arc-lead {
  color: var(--text-muted);
  font-size: 1.12rem;
  max-width: 520px;
  line-height: 1.7;
}
.arc-section-cta { margin-top: 44px; }

/* Buttons */
.arc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 14px;
  padding: 15px 28px;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  will-change: transform;
}
.arc-btn-sm { padding: 11px 18px; font-size: 0.84rem; border-radius: 12px; }
.arc-btn-primary {
  background: var(--grad);
  color: #041018;
  box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}
.arc-btn-primary:hover {
  box-shadow: 0 16px 48px rgba(0, 212, 255, 0.42);
}
.arc-btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(0, 212, 255, 0.32);
}
.arc-btn-outline:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--cyan);
}
.arc-btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}
.arc-btn-ghost:hover {
  border-color: rgba(0, 212, 255, 0.4);
  background: rgba(0, 212, 255, 0.07);
}

/* ── Header ── */
.arc-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 4000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(5, 10, 20, 0.72) 0%, rgba(5, 10, 20, 0.28) 70%, transparent 100%);
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease, transform 0.4s var(--ease);
}
.arc-header.scrolled {
  background: rgba(5, 10, 20, 0.82);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border-bottom-color: rgba(0, 212, 255, 0.1);
}
body.menu-open .arc-header { transform: translateY(-110%); }

.arc-header-inner {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.arc-logo {
  display: flex;
  align-items: center;
  flex-shrink: 1;
  min-width: 0;
  max-width: min(70vw, 260px);
}
.arc-logo img {
  display: block;
  height: 40px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  object-position: left center;
  filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.28));
}
.arc-logo-word { display: none; }
.arc-logo-text {
  display: inline-flex;
  margin-bottom: 14px;
  font-size: 1.35rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.arc-logo-text span { color: var(--cyan); }
.arc-header-actions { display: flex; align-items: center; gap: 12px; }
.arc-header-login {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 6px;
  transition: color 0.2s;
}
.arc-header-login:hover { color: #fff; }

/* Menu trigger */
.arc-menu-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 14px 0 16px;
  position: relative;
  z-index: 2;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(0, 212, 255, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
}
.arc-menu-trigger:hover {
  border-color: rgba(0, 212, 255, 0.45);
  background: rgba(0, 212, 255, 0.08);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.12);
}
.arc-menu-trigger.is-open {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}
.arc-burger {
  width: 16px;
  height: 10px;
  position: relative;
  display: block;
}
.arc-burger i {
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.4s var(--ease), top 0.4s var(--ease), opacity 0.25s;
}
.arc-burger i:first-child { top: 1px; }
.arc-burger i:last-child { top: 7px; }
.arc-menu-trigger.is-open .arc-burger i:first-child {
  top: 4.5px;
  transform: rotate(45deg);
}
.arc-menu-trigger.is-open .arc-burger i:last-child {
  top: 4.5px;
  transform: rotate(-45deg);
}

/* ═══════════════════════════════════════════
   Side navigation — NBG-style grouped drawer
   ═══════════════════════════════════════════ */
.arc-navx {
  position: fixed;
  inset: 0;
  z-index: 2200;
  pointer-events: none;
  visibility: hidden;
}
.arc-navx.is-open {
  pointer-events: auto;
  visibility: visible;
}

.arc-navx-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 14, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.arc-navx.is-open .arc-navx-backdrop { opacity: 1; }

.arc-navx-sheet {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 92vw);
  display: flex;
  flex-direction: column;
  background: #070c16;
  color: #fff;
  border-left: 1px solid rgba(0, 212, 255, 0.14);
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
  transform: translateX(105%);
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
  overscroll-behavior: contain;
  padding-top: env(safe-area-inset-top, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.arc-navx.is-open .arc-navx-sheet { transform: translateX(0); }

.arc-navx-accent {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 2;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--cyan));
}
.arc-navx-sheet::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 90% 42% at 100% 0%, rgba(0, 212, 255, 0.18), transparent 55%),
    radial-gradient(ellipse 70% 40% at 0% 100%, rgba(26, 111, 255, 0.1), transparent 50%);
}

.arc-navx-top,
.arc-navx-body { position: relative; z-index: 1; }

.arc-navx-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 18px 12px;
  flex-shrink: 0;
}
.arc-navx-eyebrow {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}
.arc-navx-title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.arc-navx-close {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.9);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.arc-navx-close:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.arc-navx-body {
  flex: 1;
  overflow-y: auto;
  padding: 6px 14px 22px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 212, 255, 0.25) transparent;
}

.arc-navx-auth {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.arc-navx-auth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 650;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s, color 0.2s;
}
.arc-navx-auth-btn--primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%);
  color: #041018;
  border: none;
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.28);
}
.arc-navx-auth-btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.36);
  color: #041018;
}
.arc-navx-auth-btn--secondary {
  background: transparent;
  color: rgba(255, 255, 255, 0.92);
  border: 1.5px solid rgba(255, 255, 255, 0.18);
}
.arc-navx-auth-btn--secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.arc-navx-auth-note {
  margin: 2px 0 0;
  padding-top: 4px;
  font-size: 0.7rem;
  font-weight: 500;
  line-height: 1.4;
  text-align: center;
  color: rgba(255, 255, 255, 0.42);
}

.arc-navx-group {
  display: flex;
  align-items: center;
  margin: 12px 0 6px;
  padding-left: 4px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
}

.arc-navx-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  margin-bottom: 6px;
  border-radius: 12px;
  text-decoration: none;
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  opacity: 0;
  transform: translateX(14px);
  transition:
    opacity 0.35s var(--ease),
    transform 0.35s var(--ease),
    background 0.2s ease,
    border-color 0.2s ease;
}
.arc-navx.is-open .arc-navx-card {
  opacity: 1;
  transform: none;
  transition-delay: calc(0.04s + var(--i, 0) * 0.03s);
}
.arc-navx-card:hover,
.arc-navx-card:focus-visible,
.arc-navx-card.is-active {
  outline: none;
  background: rgba(0, 212, 255, 0.12);
  border-color: rgba(0, 212, 255, 0.28);
  transform: translateX(3px);
}
.arc-navx-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: 1px solid transparent;
}
.arc-navx-card-icon svg {
  width: 17px;
  height: 17px;
  color: #fff;
}
.arc-navx-card-icon--cyan {
  background: linear-gradient(145deg, rgba(0, 212, 255, 0.28), rgba(0, 160, 200, 0.12));
  border-color: rgba(0, 212, 255, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.arc-navx-card-icon--blue {
  background: linear-gradient(145deg, rgba(26, 111, 255, 0.3), rgba(26, 111, 255, 0.12));
  border-color: rgba(26, 111, 255, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.arc-navx-card-icon--green {
  background: linear-gradient(145deg, rgba(34, 197, 94, 0.26), rgba(16, 185, 129, 0.12));
  border-color: rgba(52, 211, 153, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.arc-navx-card-text {
  flex: 1;
  min-width: 0;
}
.arc-navx-card-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.arc-navx-card-text small {
  display: block;
  margin-top: 2px;
  font-size: 0.7rem;
  line-height: 1.3;
  color: rgba(255, 255, 255, 0.48);
}
.arc-navx-card-arrow {
  display: inline-flex;
  flex-shrink: 0;
  opacity: 0.4;
  transition: opacity 0.2s, transform 0.2s;
}
.arc-navx-card-arrow svg {
  width: 15px;
  height: 15px;
  color: rgba(255, 255, 255, 0.55);
}
.arc-navx-card:hover .arc-navx-card-arrow,
.arc-navx-card.is-active .arc-navx-card-arrow {
  opacity: 1;
  transform: translateX(2px);
}
.arc-navx-card:hover .arc-navx-card-arrow svg,
.arc-navx-card.is-active .arc-navx-card-arrow svg {
  color: var(--cyan);
}

@media (prefers-reduced-motion: reduce) {
  .arc-navx-sheet,
  .arc-navx-card,
  .arc-navx-backdrop { transition: none !important; }
  .arc-navx-card { opacity: 1; transform: none; }
}

/* ── Hero — cinematic command HUD ── */
.arc-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-h) + 36px) 0 88px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(ellipse 90% 70% at 70% 40%, rgba(0, 80, 160, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 50% at 15% 20%, rgba(0, 212, 255, 0.1), transparent 50%),
    #03060e;
}
.arc-hero-atmosphere {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.arc-hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}
.arc-hero-floor {
  position: absolute;
  left: -20%;
  right: -20%;
  bottom: -8%;
  height: 55%;
  perspective: 320px;
  mask-image: linear-gradient(180deg, transparent 0%, #000 28%, #000 70%, transparent 100%);
}
.arc-hero-floor-grid {
  width: 100%;
  height: 180%;
  transform: rotateX(62deg);
  transform-origin: center top;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.16) 1px, transparent 1px);
  background-size: 56px 56px;
  animation: arcFloor 18s linear infinite;
  box-shadow: 0 -40px 120px rgba(0, 212, 255, 0.12);
}
.arc-hero-beam {
  position: absolute;
  top: -20%;
  right: 18%;
  width: 2px;
  height: 90%;
  background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.55), transparent);
  box-shadow: 0 0 40px 8px rgba(0, 212, 255, 0.18);
  opacity: 0.7;
  animation: arcBeam 6s ease-in-out infinite;
}
.arc-hero-scanlines {
  position: absolute;
  inset: 0;
  opacity: 0.07;
  background: repeating-linear-gradient(
    0deg,
    transparent 0 2px,
    rgba(0, 0, 0, 0.45) 2px 3px
  );
}
.arc-hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
}
.arc-hero-orb-a {
  width: min(62vw, 620px);
  height: min(62vw, 620px);
  background: radial-gradient(circle, rgba(0, 212, 255, 0.38), transparent 68%);
  top: -18%;
  left: -12%;
  animation: arcOrb 16s ease-in-out infinite;
}
.arc-hero-orb-b {
  width: min(54vw, 520px);
  height: min(54vw, 520px);
  background: radial-gradient(circle, rgba(26, 111, 255, 0.4), transparent 70%);
  bottom: 4%;
  right: -16%;
  animation: arcOrb 18s ease-in-out infinite reverse;
}
.arc-hero-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 70% at 50% 40%, transparent 20%, rgba(3, 6, 14, 0.72) 100%),
    linear-gradient(180deg, rgba(3, 6, 14, 0.35) 0%, transparent 18%, transparent 62%, #03060e 100%);
}
.arc-hero-frame {
  position: absolute;
  inset: 18px;
  z-index: 2;
  pointer-events: none;
}
.arc-hero-frame i {
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: rgba(0, 212, 255, 0.55);
  border-style: solid;
}
.arc-hero-frame i:nth-child(1) { top: 0; left: 0; border-width: 2px 0 0 2px; }
.arc-hero-frame i:nth-child(2) { top: 0; right: 0; border-width: 2px 2px 0 0; }
.arc-hero-frame i:nth-child(3) { bottom: 0; left: 0; border-width: 0 0 2px 2px; }
.arc-hero-frame i:nth-child(4) { bottom: 0; right: 0; border-width: 0 2px 2px 0; }

.arc-hero-status {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto 28px;
  padding: 0 28px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.arc-hero-status .is-live { color: var(--green); }
.arc-hero-status .is-live i {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: arcPulse 2s infinite;
  vertical-align: middle;
}
.arc-hero-status b { color: #fff; font-weight: 500; }

.arc-hero-stage {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.18fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.arc-hero-copy { min-width: 0; }
.arc-hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 22px;
  padding: 8px 14px;
  border: 1px solid rgba(0, 212, 255, 0.28);
  background: rgba(0, 212, 255, 0.08);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.12);
  animation: arcBrandIn 1s var(--ease) both;
}
.arc-hero-chip i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: arcPulse 2s infinite;
}
.arc-hero-copy .arc-brand-mark {
  font-family: Syne, var(--font-display);
  font-size: clamp(3.6rem, 9vw, 6.2rem);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.06em;
  line-height: 0.86;
  text-shadow:
    0 0 80px rgba(0, 212, 255, 0.35),
    0 20px 50px rgba(0, 0, 0, 0.45);
  animation: arcBrandIn 1.05s var(--ease) 0.05s both;
}
.arc-hero-copy h1 {
  font-family: Syne, var(--font-display);
  font-weight: 700;
  letter-spacing: -0.045em;
  font-size: clamp(1.7rem, 3.4vw, 2.55rem);
  line-height: 1.08;
  color: #e8eef8;
  max-width: 13ch;
  margin-bottom: 16px;
  animation: arcBrandIn 1.05s var(--ease) 0.12s both;
}
.arc-hero-line { display: block; }
.arc-hero-line + .arc-hero-line {
  color: transparent;
  background: linear-gradient(90deg, #94a3b8 0%, #00d4ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
.arc-hero-sub {
  font-size: clamp(1.02rem, 1.8vw, 1.18rem);
  color: var(--text-muted);
  max-width: 34ch;
  margin-bottom: 30px;
  line-height: 1.65;
  animation: arcBrandIn 1.05s var(--ease) 0.18s both;
}
.arc-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
  animation: arcBrandIn 1.05s var(--ease) 0.24s both;
}
.arc-hero-telemetry {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(0, 212, 255, 0.18);
  border: 1px solid rgba(0, 212, 255, 0.18);
  max-width: 460px;
  animation: arcBrandIn 1.05s var(--ease) 0.3s both;
}
.arc-hero-telemetry > div {
  background: rgba(4, 10, 20, 0.82);
  padding: 14px 14px 12px;
}
.arc-hero-telemetry span {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.arc-hero-telemetry strong {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.02em;
}

/* Desk — product-shot 3D terminal */
.arc-hero-visual {
  min-width: 0;
  position: relative;
  perspective: 1400px;
}
.arc-sat {
  position: absolute;
  z-index: 4;
  padding: 12px 16px;
  border: 1px solid rgba(0, 212, 255, 0.28);
  background: rgba(4, 10, 20, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 212, 255, 0.08);
  animation: arcFloat 5.5s ease-in-out infinite;
}
.arc-sat span {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.arc-sat strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--cyan);
  letter-spacing: -0.03em;
}
.arc-sat-a { top: 6%; right: -4%; }
.arc-sat-b { bottom: 18%; left: -6%; animation-delay: -2.2s; }
.arc-desk-orbit {
  transform: rotateX(10deg) rotateY(-12deg);
  transform-style: preserve-3d;
  transition: transform 0.45s var(--ease);
  filter: drop-shadow(0 40px 80px rgba(0, 0, 0, 0.55));
}
.arc-desk {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(165deg, rgba(12, 24, 42, 0.92) 0%, rgba(3, 8, 16, 0.98) 100%);
  border: 1px solid rgba(0, 212, 255, 0.32);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 0 80px rgba(0, 212, 255, 0.12),
    0 50px 120px rgba(0, 0, 0, 0.55);
}
.arc-desk::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow:
    inset 12px 12px 0 -11px rgba(0, 212, 255, 0.45),
    inset -12px -12px 0 -11px rgba(0, 212, 255, 0.45);
  z-index: 6;
}
.arc-desk-shine {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.08) 48%, transparent 62%);
  animation: arcSheen 7s ease-in-out infinite;
}
.arc-desk-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 22px 14px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.12);
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.07), transparent);
}
.arc-desk-sym {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: #fff;
  margin-bottom: 8px;
}
.arc-desk-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
}
.arc-desk-live i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(0, 230, 118, 0.85);
  animation: arcPulse 2s infinite;
}
.arc-desk-price { text-align: right; }
.arc-desk-price strong {
  display: block;
  font-family: Syne, var(--font-display);
  font-size: clamp(1.85rem, 3.4vw, 2.55rem);
  letter-spacing: -0.04em;
  color: var(--cyan);
  line-height: 1;
  text-shadow: 0 0 32px rgba(0, 212, 255, 0.5);
}
.arc-desk-price em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green);
}

.arc-desk-chart {
  position: relative;
  padding: 8px 12px 0;
  height: 168px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 70% at 70% 30%, rgba(0, 212, 255, 0.08), transparent 60%);
}
.arc-chart-grid {
  position: absolute;
  inset: 8px 12px 28px;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.07) 1px, transparent 1px);
  background-size: 36px 28px;
  mask-image: linear-gradient(180deg, #000, transparent);
}
.arc-desk-chart .arc-chart {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 118px;
}
.arc-chart-cross {
  position: absolute;
  inset: 12px 18px 36px;
  pointer-events: none;
  z-index: 2;
}
.arc-chart-cross span:first-child {
  position: absolute;
  left: 62%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(0, 212, 255, 0.35);
}
.arc-chart-cross span:last-child {
  position: absolute;
  top: 38%;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(0, 212, 255, 0.22);
}
.arc-vol {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 28px;
  padding: 0 8px 6px;
}
.arc-vol i {
  flex: 1;
  height: var(--h);
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.55), rgba(26, 111, 255, 0.15));
  transition: height 0.8s var(--ease);
}
.arc-desk-scan {
  position: absolute;
  top: 6%;
  bottom: 22%;
  left: 0;
  width: 26%;
  z-index: 3;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.2), transparent);
  animation: arcScan 4.2s var(--ease) 1.4s infinite;
  pointer-events: none;
}
.arc-chart-line {
  stroke-dasharray: 560;
  stroke-dashoffset: 560;
  animation: arcDraw 2.8s var(--ease) 0.3s forwards;
}
.arc-chart-fill {
  opacity: 0;
  animation: arcFadeIn 1.1s ease 1.15s forwards;
}

.arc-desk-cols {
  display: grid;
  grid-template-columns: 1fr 1fr 1.12fr;
  gap: 1px;
  background: rgba(0, 212, 255, 0.14);
  border-top: 1px solid rgba(0, 212, 255, 0.14);
}
.arc-desk-book,
.arc-desk-agents {
  background: rgba(3, 8, 16, 0.96);
  padding: 14px 16px 16px;
}
.arc-desk-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.arc-desk-book ul {
  list-style: none;
  display: grid;
  gap: 8px;
}
.arc-desk-book li {
  position: relative;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 0;
  z-index: 1;
}
.arc-desk-book li i {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w);
  background: rgba(0, 230, 118, 0.12);
  z-index: -1;
  transition: width 0.6s ease;
}
.arc-desk-book.is-ask li i { background: rgba(248, 113, 113, 0.14); }
.arc-desk-book li span { color: var(--green); }
.arc-desk-book.is-ask li span { color: #f87171; }
.arc-desk-book li b { color: var(--text-muted); font-weight: 500; }
.arc-desk-agents-n {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.arc-desk-agents-n strong {
  font-family: var(--font-mono);
  color: #fff;
  font-size: 1.2rem;
}
.arc-term-bars {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 54px;
}
.arc-term-bars span {
  flex: 1;
  height: var(--h);
  background: linear-gradient(180deg, #00d4ff, rgba(26, 111, 255, 0.2));
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.25);
  transform-origin: bottom;
  transition: height 0.85s var(--ease);
}
.arc-agent-nodes { display: none; }

.arc-desk-tape {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(0, 212, 255, 0.14);
  border-top: 1px solid rgba(0, 212, 255, 0.14);
}
.arc-desk-tape li {
  background: rgba(3, 8, 16, 0.96);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}
.arc-desk-tape li span { color: var(--text-dim); }
.arc-desk-tape li b { color: var(--green); }
.arc-desk-tape li.is-flash {
  background: rgba(0, 230, 118, 0.12);
}

/* Signal HUD */
.arc-signal {
  position: relative;
  z-index: 2;
  padding: 0;
  margin-top: -28px;
  overflow: hidden;
}
.arc-signal-track {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(0, 212, 255, 0.2);
  border: 1px solid rgba(0, 212, 255, 0.22);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 212, 255, 0.06);
}
.arc-signal-item {
  background: linear-gradient(180deg, rgba(8, 16, 30, 0.96), rgba(4, 8, 16, 0.98));
  padding: 26px 24px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.arc-signal-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.5;
}
.arc-signal-item:hover {
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.1), rgba(4, 8, 16, 0.98));
}
.arc-signal-k {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.arc-signal-item strong {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #fff;
}

/* Why matrix */
.arc-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.arc-matrix-cell {
  position: relative;
  overflow: hidden;
  padding: 32px 26px 28px;
  background:
    linear-gradient(180deg, rgba(0, 212, 255, 0.07), transparent 42%),
    rgba(6, 12, 22, 0.88);
  border: 1px solid rgba(0, 212, 255, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: border-color 0.35s, transform 0.4s var(--ease), box-shadow 0.4s;
}
.arc-matrix-cell::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 35%, rgba(0, 212, 255, 0.1) 50%, transparent 65%);
  transform: translateX(-120%);
  transition: transform 0.7s var(--ease);
}
.arc-matrix-cell:hover {
  border-color: rgba(0, 212, 255, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35), 0 0 40px rgba(0, 212, 255, 0.08);
}
.arc-matrix-cell:hover::before { transform: translateX(120%); }
.arc-matrix-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  border: 1px solid rgba(0, 212, 255, 0.35);
  background: rgba(0, 212, 255, 0.06);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.12);
}
.arc-matrix-cell h3 {
  font-family: var(--font-display);
  font-size: 1.18rem;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
  line-height: 1.25;
  position: relative;
}
.arc-matrix-cell p {
  position: relative;
  color: var(--text-muted);
  font-size: 0.94rem;
  max-width: 32ch;
  line-height: 1.65;
}

/* Pipeline */
.arc-pipeline {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  position: relative;
}
.arc-pipeline::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.55), transparent);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.35);
}
.arc-pipeline li {
  position: relative;
  padding: 0 8px 0 0;
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.05), transparent 50%);
  border: 1px solid rgba(0, 212, 255, 0.12);
  padding: 20px 18px 22px;
}
.arc-pipeline-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #041018;
  background: var(--grad);
  box-shadow: 0 0 0 6px var(--bg-deep), 0 0 24px rgba(0, 212, 255, 0.45);
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
  clip-path: polygon(50% 0%, 93% 25%, 93% 75%, 50% 100%, 7% 75%, 7% 25%);
}
.arc-pipeline-body strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.arc-pipeline-body p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Split */
.arc-split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(36px, 6vw, 72px);
  align-items: center;
}
.arc-split-reverse {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
}
.arc-split-reverse .arc-split-copy { order: 2; }
.arc-split-reverse .arc-console { order: 1; }
.arc-split-copy h2 {
  font-family: Syne, var(--font-display);
  font-weight: 800;
  letter-spacing: -0.045em;
  font-size: clamp(2.2rem, 4.6vw, 3.5rem);
  line-height: 1.05;
  margin-bottom: 18px;
}
.arc-split-copy h2 em {
  font-style: normal;
  background: linear-gradient(135deg, #fff 10%, #00d4ff 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.arc-split-copy .arc-lead { margin-bottom: 28px; }

.arc-spec-list {
  list-style: none;
  display: grid;
  margin-bottom: 32px;
  border-top: 1px solid rgba(0, 212, 255, 0.14);
}
.arc-spec-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  color: var(--text-muted);
  font-size: 0.96rem;
}
.arc-spec-list li span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
}

/* Terminal */
.arc-split-visual { position: relative; }
.arc-terminal {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.28);
  background: rgba(3, 8, 16, 0.95);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.5), 0 0 60px rgba(0, 212, 255, 0.1);
  transform: perspective(1200px) rotateY(-6deg) rotateX(3deg);
  transform-origin: left center;
}
.arc-terminal-glow {
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 70%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.18), transparent 65%);
  pointer-events: none;
}
.arc-terminal-chrome {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.12);
  background: rgba(0, 212, 255, 0.05);
}
.arc-terminal-dots { display: flex; gap: 6px; }
.arc-terminal-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}
.arc-terminal-dots i:first-child { background: #f87171; }
.arc-terminal-dots i:nth-child(2) { background: #facc15; }
.arc-terminal-dots i:nth-child(3) { background: #00e676; }
.arc-terminal-chrome em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  flex: 1;
}
.arc-terminal-chrome b {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
}
.arc-terminal-chrome b i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: arcPulse 2s infinite;
}
.arc-terminal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(0, 212, 255, 0.12);
}
.arc-terminal-cell {
  background: rgba(5, 10, 20, 0.98);
  padding: 22px 20px;
}
.arc-terminal-cell.is-span { grid-column: 1 / -1; }
.arc-terminal-cell span {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.arc-terminal-cell strong {
  font-family: Syne, var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  color: #fff;
}
.arc-terminal-cell strong small {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}
.arc-terminal-cell strong.is-warn { color: #fbbf24; }
.arc-terminal-bar {
  margin-top: 14px;
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.arc-terminal-bar i {
  display: block;
  height: 100%;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.55);
}

/* Protocols */
.arc-protocols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.arc-protocol {
  position: relative;
  overflow: hidden;
  padding: 36px 32px;
  background:
    linear-gradient(165deg, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
    rgba(5, 10, 20, 0.9);
  border: 1px solid rgba(0, 212, 255, 0.18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: border-color 0.3s, transform 0.4s var(--ease);
}
.arc-protocol::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  opacity: 0.8;
}
.arc-protocol:hover {
  border-color: rgba(0, 212, 255, 0.42);
  transform: translateY(-4px);
}
.arc-protocol-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  display: block;
  margin-bottom: 14px;
}
.arc-protocol header h3 {
  font-family: Syne, var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}
.arc-protocol header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 28px;
  max-width: 36ch;
}
.arc-protocol ol {
  list-style: none;
  counter-reset: step;
  display: grid;
}
.arc-protocol li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.arc-protocol li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 212, 255, 0.28);
  background: rgba(0, 212, 255, 0.06);
}

/* Dual */
.arc-dual {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  border: 1px solid rgba(0, 212, 255, 0.18);
  background: rgba(4, 10, 18, 0.7);
  overflow: hidden;
}
.arc-dual-pane { padding: 44px 40px; }
.arc-dual-pane.is-accent {
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.12) 0%, transparent 55%);
}
.arc-dual-axis {
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.45), transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.arc-dual-axis span {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  background: var(--bg);
  padding: 10px 6px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  border: 1px solid rgba(0, 212, 255, 0.2);
}
.arc-dual-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}
.arc-dual-pane h3 {
  font-family: Syne, var(--font-display);
  font-size: 1.6rem;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.arc-dual-pane > p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 28px;
  max-width: 34ch;
}
.arc-dual-pane strong { color: #fff; font-weight: 600; }
.arc-meter { list-style: none; }
.arc-meter li {
  display: grid;
  grid-template-columns: 1fr 72px auto;
  gap: 12px;
  align-items: center;
  padding: 15px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.92rem;
  color: var(--text-muted);
}
.arc-meter-bar {
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.arc-meter-bar i {
  display: block;
  height: 100%;
  background: var(--grad);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}
.arc-meter strong {
  font-family: var(--font-mono);
  color: var(--cyan);
  text-align: right;
}

/* Console */
.arc-console {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.28);
  padding: 28px;
  background:
    linear-gradient(165deg, rgba(0, 212, 255, 0.1) 0%, transparent 42%),
    rgba(3, 8, 16, 0.94);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.45), 0 0 50px rgba(0, 212, 255, 0.08);
}
.arc-console::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
}
.arc-console-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.12);
}
.arc-console-head span {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.arc-console-head em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.arc-console-field { margin-bottom: 18px; }
.arc-console-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.arc-console-field input[type="number"],
.arc-console-field select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 14px 16px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.arc-console-field input:focus,
.arc-console-field select:focus {
  border-color: rgba(0, 212, 255, 0.6);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12);
}
.arc-console-field input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
  height: 4px;
  margin-top: 8px;
}
.arc-console-range {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cyan);
}
.arc-console-out {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(0, 212, 255, 0.16);
  border: 1px solid rgba(0, 212, 255, 0.16);
  margin: 8px 0 20px;
}
.arc-console-out > div {
  background: rgba(5, 10, 20, 0.95);
  padding: 18px 16px;
}
.arc-console-out span {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.arc-console-out strong {
  font-family: Syne, var(--font-display);
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--cyan);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}
.arc-btn-block { width: 100%; }
.arc-console-note {
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* Ops bands */
.arc-bands { display: grid; gap: 12px; }
.arc-band {
  display: grid;
  grid-template-columns: 150px minmax(0, 0.9fr) minmax(0, 1.2fr);
  gap: 28px;
  align-items: start;
  padding: 28px 24px;
  border: 1px solid rgba(0, 212, 255, 0.14);
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.05), transparent 45%), rgba(5, 10, 20, 0.6);
  transition: border-color 0.3s, background 0.3s;
}
.arc-band:hover {
  border-color: rgba(0, 212, 255, 0.38);
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.1), transparent 55%), rgba(5, 10, 20, 0.8);
}
.arc-band-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  padding-top: 6px;
}
.arc-band h3 {
  font-family: Syne, var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  padding-top: 2px;
}
.arc-band p {
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
  max-width: 48ch;
}

/* Trust */
.arc-trust {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 8px;
}
.arc-trust-cell {
  background:
    linear-gradient(180deg, rgba(0, 212, 255, 0.06), transparent 50%),
    rgba(5, 10, 20, 0.85);
  border: 1px solid rgba(0, 212, 255, 0.14);
  padding: 36px 32px;
  position: relative;
  transition: border-color 0.3s, transform 0.35s var(--ease);
}
.arc-trust-cell:hover {
  border-color: rgba(0, 212, 255, 0.4);
  transform: translateY(-3px);
}
.arc-trust-mark {
  display: block;
  width: 36px;
  height: 36px;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 212, 255, 0.45);
  position: relative;
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.15);
}
.arc-trust-mark::before,
.arc-trust-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}
.arc-trust-mark::before {
  width: 12px;
  height: 1.5px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.arc-trust-mark::after {
  width: 1.5px;
  height: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.arc-trust-cell:nth-child(2) .arc-trust-mark::after { display: none; }
.arc-trust-cell:nth-child(3) .arc-trust-mark {
  border-radius: 50%;
  box-shadow: inset 0 0 0 7px transparent, inset 0 0 0 8px rgba(0, 212, 255, 0.4), 0 0 18px rgba(0, 212, 255, 0.15);
}
.arc-trust-cell:nth-child(3) .arc-trust-mark::before,
.arc-trust-cell:nth-child(3) .arc-trust-mark::after { display: none; }
.arc-trust-cell:nth-child(4) .arc-trust-mark::before {
  width: 9px;
  height: 9px;
  transform: translate(-50%, -50%) rotate(45deg);
}
.arc-trust-cell:nth-child(4) .arc-trust-mark::after { display: none; }
.arc-trust-cell strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.arc-trust-cell p {
  color: var(--text-muted);
  font-size: 0.94rem;
  max-width: 36ch;
  line-height: 1.65;
}

/* Plans */
.arc-plan-book { margin-top: 36px; }
.arc-plan-book-head { margin-bottom: 18px; }
.arc-plan-book-head h3 {
  font-family: Syne, var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  letter-spacing: -0.03em;
}
.arc-program-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.arc-program-card {
  border: 1px solid rgba(0, 212, 255, 0.16);
  background: rgba(5, 10, 20, 0.85);
  padding: 28px 24px;
}
.arc-program-card h3 {
  font-family: Syne, var(--font-display);
  font-size: 1.45rem;
  margin: 8px 0 10px;
}
.arc-program-card > p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 18px;
}
.arc-program-table {
  width: 100%;
  border-collapse: collapse;
}
.arc-program-table th,
.arc-program-table td {
  text-align: left;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  font-size: 0.9rem;
}
.arc-program-table th {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.arc-program-table td:last-child {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-weight: 600;
}
.arc-plan-policy {
  margin-top: 36px;
  padding: 22px 24px;
  border: 1px solid rgba(0, 212, 255, 0.18);
  background: rgba(0, 212, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}
.arc-plan-policy p + p { margin-top: 8px; }
.arc-plan-policy strong { color: #fff; }
.payout-policy p + p { margin-top: 8px; }
.arc-plans {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  align-items: stretch;
}
.arc-plan {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.16);
  padding: 36px 28px 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 40%),
    rgba(5, 10, 20, 0.85);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.25s, transform 0.4s var(--ease), box-shadow 0.4s;
}
.arc-plan::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 40%, rgba(0, 212, 255, 0.08) 50%, transparent 60%);
  transform: translateX(-130%);
  transition: transform 0.7s var(--ease);
}
.arc-plan:hover {
  border-color: rgba(0, 212, 255, 0.42);
  transform: translateY(-6px);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.4);
}
.arc-plan:hover::before { transform: translateX(130%); }
.arc-plan.is-featured {
  border-color: rgba(0, 212, 255, 0.5);
  background:
    linear-gradient(165deg, rgba(0, 212, 255, 0.16) 0%, transparent 48%),
    rgba(6, 12, 22, 0.96);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5), 0 0 70px rgba(0, 212, 255, 0.12);
  transform: scale(1.03);
}
.arc-plan-flag {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #041018;
  background: var(--grad);
  padding: 6px 12px;
  font-weight: 700;
}
.arc-plan h3 {
  font-family: Syne, var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  position: relative;
}
.arc-plan-roi {
  font-family: var(--font-mono);
  font-size: 2.7rem;
  color: var(--cyan);
  line-height: 1;
  letter-spacing: -0.04em;
  text-shadow: 0 0 28px rgba(0, 212, 255, 0.35);
  position: relative;
}
.arc-plan-roi span {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-left: 4px;
}
.arc-plan-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  flex: 1;
  line-height: 1.6;
  position: relative;
}
.arc-plan-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 4px 0 8px;
  background: rgba(0, 212, 255, 0.14);
  border: 1px solid rgba(0, 212, 255, 0.14);
  position: relative;
}
.arc-plan-meta div {
  padding: 14px;
  background: rgba(0, 0, 0, 0.32);
}
.arc-plan-meta dt {
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
  font-family: var(--font-mono);
}
.arc-plan-meta dd {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: #fff;
}
.arc-plan .arc-btn { width: 100%; margin-top: auto; position: relative; }

/* FAQ */
.arc-faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 48px;
  align-items: start;
  margin-bottom: 88px;
}
.arc-faq-layout .arc-section-head { margin-bottom: 0; }
.arc-faq { display: grid; gap: 8px; }
.arc-faq details {
  border: 1px solid rgba(0, 212, 255, 0.12);
  background: rgba(5, 10, 20, 0.55);
  padding: 0;
}
.arc-faq summary {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  cursor: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  letter-spacing: -0.015em;
  padding: 18px 20px;
}
.arc-faq summary::-webkit-details-marker { display: none; }
.arc-faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--cyan);
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform 0.35s var(--ease);
}
.arc-faq details[open] {
  border-color: rgba(0, 212, 255, 0.32);
  background: rgba(0, 212, 255, 0.05);
}
.arc-faq details[open] summary::after { transform: rotate(45deg); }
.arc-faq details p {
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 0 20px 20px;
  max-width: 52ch;
  line-height: 1.7;
}

/* Finale */
.arc-finale {
  text-align: center;
  padding: 96px 40px;
  border: 1px solid rgba(0, 212, 255, 0.28);
  background: rgba(4, 10, 20, 0.9);
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 80px rgba(0, 212, 255, 0.1);
}
.arc-finale-glow {
  position: absolute;
  inset: -30% 5% auto;
  height: 70%;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.28), transparent 65%);
  pointer-events: none;
  animation: arcOrb 10s ease-in-out infinite;
}
.arc-finale-grid {
  position: absolute;
  inset: 0;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.08) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 40%, #000, transparent);
  pointer-events: none;
  animation: arcFloor 22s linear infinite;
}
.arc-finale .arc-brand-mark {
  position: relative;
  font-family: Syne, var(--font-display);
  font-size: clamp(2.1rem, 3.8vw, 3.1rem);
  margin-bottom: 18px;
}
.arc-finale h2 {
  position: relative;
  font-family: Syne, var(--font-display);
  font-size: clamp(2rem, 4vw, 3.1rem);
  letter-spacing: -0.04em;
  margin-bottom: 14px;
}
.arc-finale p {
  position: relative;
  color: var(--text-muted);
  max-width: 42ch;
  margin: 0 auto 32px;
  font-size: 1.05rem;
}
.arc-finale .arc-btn { position: relative; }

#ecopoints-disclosure {
  padding: 56px 0 !important;
  border-top: 1px solid rgba(0, 212, 255, 0.1) !important;
  background: var(--bg);
}
#ecopoints-disclosure .arc-wrap { max-width: 820px !important; }
#ecopoints-disclosure h2 {
  font-family: var(--font-display);
  font-size: 1.15rem !important;
  letter-spacing: -0.02em;
  font-weight: 600;
}
#ecopoints-disclosure p {
  color: var(--text-muted) !important;
  font-size: 0.92rem !important;
  margin-top: 14px !important;
  line-height: 1.7;
}
#ecopoints-disclosure a { color: var(--cyan) !important; }

.arc-footer {
  border-top: 1px solid rgba(0, 212, 255, 0.12);
  padding: 72px 0 36px;
  background: var(--bg-deep);
  position: relative;
}
.arc-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.45), transparent);
}
.arc-footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 52px;
}
.arc-footer h4 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
  color: #fff;
}
.arc-footer p,
.arc-footer a {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
}
.arc-footer ul { list-style: none; display: grid; gap: 11px; }
.arc-footer a:hover { color: var(--cyan); }
.arc-footer-office {
    margin-top: 22px;
    padding: 16px 16px 15px;
    border-radius: 16px;
    border: 1px solid rgba(0, 212, 255, 0.16);
    background:
        radial-gradient(circle at 0% 0%, rgba(0, 212, 255, 0.1), transparent 55%),
        rgba(255, 255, 255, 0.02);
    max-width: 28rem;
}
.arc-footer-office-kicker {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 8px;
}
.arc-footer-office address {
    font-style: normal;
    font-family: var(--font-body);
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--text-muted);
    white-space: pre-line;
}
.arc-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

[data-reveal] {
  opacity: 1;
  transform: none;
}
html.arc-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.95s var(--ease), transform 0.95s var(--ease);
}
html.arc-reveal [data-reveal].revealed { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  html.arc-reveal [data-reveal] { opacity: 1; transform: none; }
}

body.arc-skin .header-wrapper,
body.arc-skin .whatsapp-float,
body.arc-skin #google_translate_element,
body.arc-skin .preloader { display: none !important; }

@keyframes arcDraw { to { stroke-dashoffset: 0; } }
@keyframes arcFadeIn { to { opacity: 1; } }
@keyframes arcScan {
  0% { transform: translateX(-120%); opacity: 0; }
  18% { opacity: 0.65; }
  100% { transform: translateX(240%); opacity: 0; }
}
@keyframes arcPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.82); }
}
@keyframes arcOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(3%, 4%) scale(1.1); }
}
@keyframes arcFloor {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 0 56px, 56px 0; }
}
@keyframes arcBeam {
  0%, 100% { opacity: 0.35; transform: scaleY(1); }
  50% { opacity: 0.85; transform: scaleY(1.06); }
}
@keyframes arcBrandIn {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}
@keyframes arcSheen {
  0%, 70% { transform: translateX(-40%); opacity: 0; }
  80% { opacity: 1; }
  100% { transform: translateX(60%); opacity: 0; }
}
@keyframes arcFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@media (max-width: 1100px) {
  .arc-matrix { grid-template-columns: 1fr 1fr; }
  .arc-pipeline { grid-template-columns: 1fr; }
  .arc-pipeline::before {
    top: 0;
    bottom: 0;
    left: 42px;
    right: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.5), transparent);
  }
  .arc-pipeline li {
    display: grid;
    grid-template-columns: 46px 1fr;
    gap: 18px;
    padding: 18px;
  }
  .arc-pipeline-n { margin-bottom: 0; }
  .arc-band { grid-template-columns: 1fr; gap: 10px; }
  .arc-sat { display: none; }
}

@media (max-width: 980px) {
  .arc-logo img { height: 36px; }
  .arc-menu-trigger-label { display: none; }
  .arc-menu-trigger { padding: 0 12px; width: 44px; justify-content: center; }
  .arc-header-login { display: none; }
  .arc-header-actions .arc-btn-sm { display: none; }

  /* Stacked command HUD — keep every desktop module, recompose vertically */
  .arc-hero {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    min-height: auto;
    padding: calc(var(--header-h) + 10px) 0 36px;
  }
  .arc-hero-frame {
    display: block;
    inset: 10px;
  }
  .arc-hero-frame i { width: 16px; height: 16px; }
  .arc-hero-floor {
    display: block;
    height: 42%;
    bottom: -4%;
    opacity: 0.85;
  }
  .arc-hero-beam { display: none !important; }
  .arc-hero-canvas { opacity: 0.42; }
  .arc-hero-scanlines { opacity: 0.06; }

  .arc-hero-status {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 18px;
    max-width: none;
    margin: 0 0 18px;
    padding: 8px 16px;
    mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
    border-bottom: 1px solid rgba(0, 212, 255, 0.12);
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.05), transparent);
  }
  .arc-hero-status::-webkit-scrollbar { display: none; }
  .arc-hero-status span { white-space: nowrap; flex-shrink: 0; }

  .arc-hero-stage {
    display: flex;
    flex-direction: column;
    gap: 22px;
    min-height: 0;
    max-width: none;
    margin: 0;
    padding: 0 16px;
  }
  .arc-hero-copy {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    padding: 4px 0 0;
    background: none;
  }
  .arc-hero-copy .arc-brand-mark {
    font-size: clamp(2.1rem, 9vw, 3.1rem);
    letter-spacing: -0.05em;
    line-height: 0.95;
    margin-bottom: 12px;
    max-width: 100%;
    overflow-wrap: anywhere;
  }
  .arc-hero-copy h1 {
    font-size: clamp(1.3rem, 5.4vw, 1.8rem);
    max-width: 100%;
    color: #e8eef8;
    margin-bottom: 12px;
  }
  .arc-hero-sub {
    max-width: 100%;
    font-size: 0.95rem;
    margin-bottom: 20px;
  }
  .arc-hero-chip { margin-bottom: 16px; }
  .arc-hero-ctas {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    max-width: none;
    margin-bottom: 16px;
  }
  .arc-hero-ctas .arc-btn {
    width: 100%;
    justify-content: center;
    padding: 13px 10px;
    font-size: 0.86rem;
    white-space: nowrap;
  }
  .arc-hero-telemetry {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    max-width: none;
    background: rgba(4, 10, 20, 0.72);
    border: 1px solid rgba(0, 212, 255, 0.16);
  }
  .arc-hero-telemetry > div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    min-width: 0;
    padding: 12px 14px;
    border: none;
    border-bottom: 1px solid rgba(0, 212, 255, 0.12);
    background: transparent;
  }
  .arc-hero-telemetry > div:last-child { border-bottom: none; }
  .arc-hero-telemetry span { margin-bottom: 0; flex-shrink: 0; }
  .arc-hero-telemetry strong {
    font-size: 0.86rem;
    line-height: 1.35;
    text-align: right;
  }

  .arc-hero-visual {
    position: relative;
    inset: auto;
    z-index: 2;
    width: 100%;
    perspective: none;
  }
  .arc-desk-orbit {
    height: auto;
    transform: none;
    filter: drop-shadow(0 28px 50px rgba(0, 0, 0, 0.5));
  }
  .arc-desk {
    height: auto;
    display: block;
    border: 1px solid rgba(0, 212, 255, 0.32);
    background:
      linear-gradient(165deg, rgba(12, 24, 42, 0.94) 0%, rgba(3, 8, 16, 0.98) 100%);
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.04) inset,
      0 0 60px rgba(0, 212, 255, 0.12),
      0 28px 70px rgba(0, 0, 0, 0.5);
  }
  .arc-desk::before { display: block; }
  .arc-desk-shine { display: block; }
  .arc-desk-head {
    order: unset;
    padding: 16px 16px 12px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.12);
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.08), transparent);
    align-items: flex-start;
  }
  .arc-desk-price strong {
    font-size: clamp(1.7rem, 7vw, 2.2rem);
    text-shadow: 0 0 28px rgba(0, 212, 255, 0.5);
  }
  .arc-desk-chart {
    order: unset;
    height: 148px;
    min-height: 0;
    max-height: none;
    padding: 6px 10px 0;
    margin: 0;
  }
  .arc-desk-chart .arc-chart { height: 100px; }
  .arc-chart-grid,
  .arc-chart-cross,
  .arc-desk-scan { display: block; }
  .arc-vol {
    display: flex;
    height: 22px;
  }
  .arc-desk-cols {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
  }
  .arc-desk-agents {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px 16px;
  }
  .arc-desk-agents .arc-desk-label { margin-bottom: 0; }
  .arc-desk-agents-n { margin-bottom: 0; margin-right: auto; }
  .arc-desk-tape { display: grid !important; }
  .arc-desk-book,
  .arc-desk-agents { padding: 12px 12px 14px; }
  .arc-desk-book li { font-size: 10px; }
  .arc-term-bars { display: none !important; }
  .arc-agent-nodes {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-top: 0;
  }
  .arc-agent-nodes i {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.18);
    box-shadow: none;
    transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  }
  .arc-agent-nodes i.is-on {
    background: var(--cyan);
    border-color: var(--cyan);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.7);
  }
  .arc-chart-cross { display: none !important; }

  .arc-signal {
    margin-top: 8px;
    padding: 0 16px 8px;
  }
  .arc-signal-track {
    grid-template-columns: 1fr 1fr;
    gap: 1px;
  }

  .arc-split,
  .arc-split-reverse { grid-template-columns: 1fr; }
  .arc-split-reverse .arc-split-copy,
  .arc-split-reverse .arc-console { order: unset; }
  .arc-terminal { transform: none; }
  .arc-protocols,
  .arc-plans,
  .arc-program-grid,
  .arc-faq-layout,
  .arc-trust { grid-template-columns: 1fr 1fr; }

  .arc-footer {
    padding: 40px 0 max(16px, env(safe-area-inset-bottom, 0px));
  }
  .arc-footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 20px;
    margin-bottom: 36px;
  }
  .arc-footer-grid > div:first-child {
    grid-column: 1 / -1;
    padding-bottom: 28px;
    margin-bottom: 4px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.12);
  }
  .arc-footer-grid > div:first-child p {
    max-width: 38ch;
    font-size: 0.95rem;
    line-height: 1.7;
  }
  .arc-footer-office {
    margin-top: 18px;
    max-width: none;
  }
  .arc-footer .arc-logo-text {
    font-size: 1.5rem;
    margin-bottom: 12px;
  }
  .arc-footer h4 {
    margin-bottom: 14px;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }
  .arc-footer ul { gap: 2px; }
  .arc-footer ul a {
    display: block;
    padding: 8px 0;
    font-size: 0.95rem;
  }
  .arc-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 16px;
    padding-bottom: 0;
    margin-bottom: 0;
  }
  .arc-plan.is-featured { transform: none; }
  .arc-dual { grid-template-columns: 1fr; }
  .arc-dual-axis {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), transparent);
  }
  .arc-dual-axis span {
    writing-mode: horizontal-tb;
    transform: none;
    padding: 4px 10px;
  }
}

@media (max-width: 640px) {
  .arc-section { padding: 84px 0; }
  .arc-wrap { padding: 0 16px; }
  .arc-section-head { max-width: 100%; }
  .arc-section-head h2 { overflow-wrap: break-word; }
  .arc-logo img { height: 34px; }

  .arc-hero { padding: calc(var(--header-h) + 8px) 0 24px; }
  .arc-hero-stage { padding: 0 16px; gap: 18px; width: 100%; }
  .arc-hero-copy { padding: 0; }
  .arc-hero-copy .arc-brand-mark {
    font-size: clamp(1.95rem, 8.6vw, 2.55rem);
  }
  .arc-hero-copy h1 {
    font-size: clamp(1.22rem, 5.2vw, 1.55rem);
  }
  .arc-hero-ctas { grid-template-columns: 1fr; }
  .arc-hero-ctas .arc-btn { padding: 14px 16px; font-size: 0.92rem; }
  .arc-hero-telemetry strong { font-size: 0.84rem; }
  .arc-desk-cols { grid-template-columns: 1fr 1fr; }

  .arc-signal { padding: 0 0 4px; }
  .arc-signal-track {
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    scroll-snap-type: x mandatory;
    border-left: none;
    border-right: none;
  }
  .arc-signal-track::-webkit-scrollbar { display: none; }
  .arc-signal-item {
    min-width: 78vw;
    flex: 0 0 78vw;
    scroll-snap-align: start;
    padding: 22px 20px;
    border-right: 1px solid rgba(0, 212, 255, 0.16);
  }

  .arc-plans,
  .arc-program-grid,
  .arc-protocols,
  .arc-faq-layout,
  .arc-matrix,
  .arc-trust,
  .arc-console-out { grid-template-columns: 1fr; }

  .arc-meter li { grid-template-columns: 1fr 56px auto; }
  .arc-meter-bar { display: block; }
  .arc-finale { padding: 52px 20px; }
  .arc-dual-pane { padding: 28px 20px; }
  .arc-console { padding: 20px; }
  .arc-matrix-cell,
  .arc-protocol,
  .arc-trust-cell { padding: 26px 20px; }
  .arc-band { padding: 22px 16px; }

  .arc-cursor,
  .arc-spotlight { display: none !important; }
  body.arc-skin,
  body.arc-skin a,
  body.arc-skin button { cursor: auto; }
  .arc-faq summary { cursor: pointer; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .arc-page { transition: none; }
  body.menu-open .arc-page { filter: none; opacity: 1; }
}

/* Tidio must stay fixed — its host node must not add a blank band under the footer */
#tidio-chat {
  position: fixed !important;
  bottom: 0 !important;
  right: 0 !important;
  height: 0 !important;
  width: 0 !important;
  overflow: visible !important;
  margin: 0 !important;
}
#tidio-chat iframe {
  position: fixed !important;
}