/* One2N brand tokens */
:root {
  --blue: #0099ff;
  --blue-soft: #3db5ff;
  --navy: #061059;
  --ink: #f5f5f5;
  --muted: #9aa3b2;
  --bg: #000000;
  --bg-elev: #0a0a0a;
  --panel: #121212;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(0, 153, 255, 0.35);
  --overlay: rgba(0, 0, 0, 0.72);
  --radius: 14px;
  --font: "Inter", system-ui, sans-serif;
  --header-h: 72px;
  --banner-h: 36px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 450;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  padding-top: calc(var(--banner-h) + var(--header-h));
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

em {
  font-style: normal;
  color: var(--blue);
}

.proto-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: var(--banner-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, #061059, #003d66);
  border-bottom: 1px solid var(--line-strong);
}

.proto-banner span:first-child {
  background: var(--blue);
  color: #001018;
  font-weight: 600;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  font-size: 0.7rem;
}

.proto-banner .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--blue-soft);
}

.site-header {
  position: fixed;
  top: var(--banner-h);
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(0, 0, 0, 0.92);
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.logo span {
  color: var(--blue);
}

.nav-center {
  display: flex;
  gap: 0.25rem;
  padding: 0.3rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.nav-center button {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}

.nav-center button:hover {
  color: var(--ink);
  background: rgba(0, 153, 255, 0.12);
}

.nav-right {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.6rem;
}

.nav-right .ghost {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-right .ghost:hover {
  color: var(--blue);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  place-items: center;
  gap: 5px;
  flex-direction: column;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
}

.mobile-nav {
  position: fixed;
  top: calc(var(--banner-h) + var(--header-h));
  left: 0;
  right: 0;
  z-index: 45;
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  background: #050505;
  border-bottom: 1px solid var(--line);
}

.mobile-nav button {
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  background: var(--panel);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--blue);
  color: #001018;
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--blue);
  background: rgba(0, 153, 255, 0.08);
}

.btn-ceo {
  background: #171717;
  border: 1px solid var(--line);
  color: var(--ink);
  padding-right: 0.55rem;
}

.btn-ceo .avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  display: grid;
  place-items: center;
  font-size: 0.65rem;
  font-weight: 700;
}

.btn-ceo .arrow {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--blue);
  color: #001018;
  display: grid;
  place-items: center;
  margin-left: 0.35rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - var(--banner-h) - var(--header-h));
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(2rem, 6vh, 4rem) clamp(1rem, 4vw, 2.5rem) 3rem;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: -20% 20% auto -10%;
  height: 70%;
  background: radial-gradient(ellipse at center, rgba(0, 153, 255, 0.22), transparent 65%);
  pointer-events: none;
  animation: pulseGlow 8s ease-in-out infinite;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    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: 64px 64px;
  mask-image: radial-gradient(ellipse at 40% 40%, black 20%, transparent 75%);
  pointer-events: none;
}

@keyframes pulseGlow {
  0%,
  100% {
    opacity: 0.7;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

.brand-mark {
  margin: 0 0 0.75rem;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
}

.brand-mark::after {
  content: "";
  display: inline-block;
  width: 0.45em;
  height: 0.45em;
  margin-left: 0.12em;
  border-radius: 2px;
  background: var(--blue);
  transform: translateY(-0.15em);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 14ch;
}

.lede {
  margin: 0 0 1.75rem;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-visual {
  display: grid;
  place-items: center;
  min-height: 320px;
}

.orbit {
  position: relative;
  width: min(360px, 80vw);
  height: min(360px, 80vw);
  border-radius: 50%;
  border: 1px solid var(--line);
  animation: spinSlow 40s linear infinite;
}

.orbit::before {
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  border: 1px dashed rgba(0, 153, 255, 0.25);
}

.core {
  position: absolute;
  inset: 38%;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, #061059, #0099ff);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  animation: spinSlow 40s linear infinite reverse;
  box-shadow: 0 0 40px rgba(0, 153, 255, 0.35);
}

.node {
  position: absolute;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--blue-soft);
  animation: spinSlow 40s linear infinite reverse;
}

.n1 {
  top: 8%;
  left: 42%;
}
.n2 {
  top: 42%;
  right: 2%;
}
.n3 {
  bottom: 10%;
  left: 38%;
}
.n4 {
  top: 42%;
  left: 2%;
}

@keyframes spinSlow {
  to {
    transform: rotate(360deg);
  }
}

.logos {
  padding: 1.5rem clamp(1rem, 4vw, 2.5rem) 2.5rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
}

.logos p {
  margin: 0 0 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem 2rem;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.section {
  padding: clamp(3.5rem, 8vh, 5.5rem) clamp(1rem, 4vw, 2.5rem);
}

.section-head {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-head h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.6rem, 3.2vw, 2.25rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.section-sub {
  margin: 0;
  color: var(--muted);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.chip {
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.chip:hover {
  color: var(--ink);
  border-color: rgba(0, 153, 255, 0.4);
}

.chip.active {
  background: rgba(0, 153, 255, 0.15);
  border-color: var(--blue);
  color: var(--blue-soft);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.service-card {
  position: relative;
  padding: 1.35rem 1.25rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 168px;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s, opacity 0.25s;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--blue);
  opacity: 0;
  transition: opacity 0.2s;
}

.service-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card.hidden {
  display: none;
}

.service-card .icon {
  width: 36px;
  height: 36px;
  margin-bottom: 0.85rem;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(0, 153, 255, 0.12);
  color: var(--blue);
  font-size: 0.85rem;
  font-weight: 700;
}

.service-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.service-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.process-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.phase-rail {
  display: grid;
  gap: 0.4rem;
}

.phase-btn {
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
  transition: all 0.2s;
}

.phase-btn strong {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
  color: inherit;
  opacity: 0.7;
}

.phase-btn.active {
  background: rgba(0, 153, 255, 0.12);
  border-color: var(--line-strong);
  color: var(--ink);
}

.phase-panel {
  padding: 1.75rem;
  background: linear-gradient(160deg, #0d1528, #121212 55%);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  min-height: 280px;
}

.phase-panel h3 {
  margin: 0 0 0.75rem;
  font-size: 1.45rem;
}

.phase-panel p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  max-width: 42rem;
}

.deliverables {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.deliverables span {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  font-size: 0.82rem;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.case-card {
  display: grid;
  gap: 1rem;
  padding: 1.35rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.case-card .tag {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.case-card h3 {
  margin: 0.35rem 0 0.5rem;
  font-size: 1.1rem;
}

.case-card .problem {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.metric {
  padding: 0.75rem;
  background: rgba(0, 153, 255, 0.06);
  border-radius: 10px;
}

.metric strong {
  display: block;
  color: var(--blue-soft);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.metric span {
  font-size: 0.75rem;
  color: var(--muted);
}

.stack-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.stack-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  min-height: 3rem;
}

.stack-pills span {
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: 0.88rem;
  animation: fadeUp 0.35s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.resource-card {
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #0b0f18;
}

.resource-card h3 {
  margin: 0 0 0.5rem;
  color: var(--blue-soft);
}

.resource-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.quote-stage {
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
}

.quote-stage blockquote {
  margin: 0 0 1rem;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.quote-stage footer {
  color: var(--muted);
  font-size: 0.92rem;
}

.quote-dots {
  display: flex;
  justify-content: center;
  gap: 0.45rem;
  margin-top: 1.25rem;
}

.quote-dots button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.quote-dots button.active {
  background: var(--blue);
  width: 22px;
  border-radius: 999px;
}

.faq-list {
  max-width: 52rem;
  display: grid;
  gap: 0.65rem;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  overflow: hidden;
}

.faq-item button {
  width: 100%;
  text-align: left;
  padding: 1rem 1.15rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 600;
}

.faq-item button span {
  color: var(--blue);
}

.faq-item .answer {
  display: none;
  padding: 0 1.15rem 1.1rem;
  color: var(--muted);
}

.faq-item.open .answer {
  display: block;
}

.cta-band {
  margin: 0 clamp(1rem, 4vw, 2.5rem) 3rem;
  padding: clamp(2.5rem, 6vw, 3.5rem);
  border-radius: 20px;
  background:
    radial-gradient(circle at 90% 10%, rgba(0, 153, 255, 0.25), transparent 40%),
    linear-gradient(135deg, #061059, #0a0a0a 60%);
  border: 1px solid var(--line-strong);
}

.cta-band h2 {
  margin: 0 0 0.75rem;
  max-width: 18ch;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}

.cta-band p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: 40rem;
}

.site-footer {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 2rem;
  padding: 3rem clamp(1rem, 4vw, 2.5rem) 1.5rem;
  border-top: 1px solid var(--line);
  background: #050505;
}

.footer-brand p {
  color: var(--muted);
  max-width: 28rem;
}

.footer-brand a[href^="mailto"] {
  color: var(--blue-soft);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.footer-cols h4 {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-cols a {
  display: block;
  color: var(--ink);
  opacity: 0.85;
  margin-bottom: 0.45rem;
  font-size: 0.92rem;
}

.footer-cols a:hover {
  color: var(--blue);
  opacity: 1;
}

.legal {
  grid-column: 1 / -1;
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

/* Chat */
.chat-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 70;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--blue);
  color: #001018;
  display: grid;
  place-items: center;
  box-shadow: 0 10px 30px rgba(0, 153, 255, 0.35);
  transition: transform 0.2s;
}

.chat-fab:hover {
  transform: scale(1.05);
}

.chat-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 5.5rem;
  z-index: 70;
  width: min(380px, calc(100vw - 1.5rem));
  height: min(520px, calc(100vh - 8rem));
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  background: #0c0c0c;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
}

.chat-panel header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1rem 0.75rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(0, 153, 255, 0.12), transparent);
}

.chat-panel header strong {
  display: block;
}

.chat-panel header span {
  color: var(--muted);
  font-size: 0.78rem;
}

.chat-panel header button {
  font-size: 1.4rem;
  line-height: 1;
  color: var(--muted);
}

.chat-messages {
  padding: 1rem;
  overflow-y: auto;
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.bubble {
  max-width: 92%;
  padding: 0.75rem 0.9rem;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.bubble.bot {
  background: #161616;
  border: 1px solid var(--line);
}

.bubble.user {
  justify-self: end;
  background: rgba(0, 153, 255, 0.18);
  border: 1px solid var(--line-strong);
}

.chat-suggest {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0 0.85rem 0.65rem;
}

.chat-suggest button {
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.72rem;
  color: var(--muted);
}

.chat-suggest button:hover {
  border-color: var(--blue);
  color: var(--blue-soft);
}

.chat-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--line);
}

.chat-form input {
  background: #151515;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  color: var(--ink);
  outline: none;
}

.chat-form input:focus {
  border-color: var(--blue);
}

.chat-form button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue);
  color: #001018;
  font-weight: 700;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-visual {
    order: -1;
    min-height: 240px;
  }

  .orbit {
    width: 260px;
    height: 260px;
  }

  .service-grid,
  .case-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .process-layout {
    grid-template-columns: 1fr;
  }

  .phase-rail {
    grid-auto-flow: column;
    grid-auto-columns: minmax(140px, 1fr);
    overflow-x: auto;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-center,
  .nav-right {
    display: none;
  }

  .nav-toggle {
    display: grid;
    justify-self: end;
  }

  .site-header {
    grid-template-columns: 1fr auto;
  }

  .service-grid,
  .case-grid,
  .resource-grid,
  .footer-cols {
    grid-template-columns: 1fr;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}