:root {
  --bg: #050b14;
  --surface: #0c1624;
  --surface2: #111e30;
  --border: rgba(0, 200, 255, 0.12);
  --accent: #00c8ff;
  --accent2: #0affa0;
  --accent3: #7b5fff;
  --text: #e8f0f8;
  --muted: #6a8299;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6vw;
  height: 68px;
  background: rgba(5, 11, 20, 0.85);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--accent); }

.nav-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  color: #000 !important;
  padding: 0.45rem 1.3rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem !important;
  letter-spacing: 0.05em;
  transition: opacity 0.2s !important;
}

.nav-cta:hover { opacity: 0.85; color: #000 !important; }

/* ─── HERO ─── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: 6rem 6vw 4rem;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}

.glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,200,255,0.12), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -60%);
}

.glow-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(10,255,160,0.08), transparent 70%);
  bottom: 0; right: 10%;
}

.glow-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(123,95,255,0.1), transparent 70%);
  top: 20%; left: 5%;
}

.hero-content { position: relative; max-width: 860px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  background: rgba(0,200,255,0.05);
}

.hero-badge-dot {
  width: 6px; height: 6px;
  background: var(--accent2);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.h1-brand {
  display: block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 50%, var(--accent3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.hero-sub strong { color: var(--text); }

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  color: #fff;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 24px rgba(0,200,255,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0,200,255,0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  letter-spacing: 0.04em;
  background: rgba(255,255,255,0.03);
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(0,200,255,0.07);
}

/* ─── STATS ─── */
#stats {
  padding: 3rem 6vw;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: flex;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

/* ─── SECTIONS ─── */
section { padding: 6rem 6vw; }

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  font-weight: 700;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.75;
}

/* ─── ABOUT ─── */
#about .about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.about-visual {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-diagram {
  width: 100%;
  height: 100%;
}

.keyword-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}

.pill {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid;
}

.pill-blue { border-color: rgba(0,200,255,0.4); color: var(--accent); background: rgba(0,200,255,0.07); }
.pill-green { border-color: rgba(10,255,160,0.4); color: var(--accent2); background: rgba(10,255,160,0.07); }
.pill-purple { border-color: rgba(123,95,255,0.4); color: var(--accent3); background: rgba(123,95,255,0.07); }

/* ─── SOLUTION ─── */
#solution { background: var(--surface); }

#solution .sol-inner {
  max-width: 1200px;
  margin: 0 auto;
}

#solution .sol-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: end;
  margin-bottom: 4rem;
}

.sol-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.sol-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.sol-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--card-accent, var(--accent)), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.sol-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-accent, var(--accent));
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

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

.sol-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.sol-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.sol-card p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── PRODUCT ─── */
#product .prod-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.prod-header { margin-bottom: 4rem; }

.prod-tiers {
  display: flex;
  gap: 0;
  position: relative;
}

.prod-tiers::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
  transform: translateY(-50%);
  z-index: 0;
}

.tier-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}

.tier-node {
  width: 90px; height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  border: 2px solid;
  position: relative;
  background: var(--bg);
}

.tier-node::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px dashed;
  opacity: 0.3;
  animation: spin 10s linear infinite;
}

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

.t1 .tier-node { border-color: var(--accent); color: var(--accent); }
.t1 .tier-node::after { border-color: var(--accent); }
.t2 .tier-node { border-color: var(--accent2); color: var(--accent2); }
.t2 .tier-node::after { border-color: var(--accent2); animation-direction: reverse; }
.t3 .tier-node { border-color: var(--accent3); color: var(--accent3); }
.t3 .tier-node::after { border-color: var(--accent3); }

.tier-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem;
  text-align: center;
  width: 100%;
}

.tier-num {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.t1 .tier-num { color: var(--accent); }
.t2 .tier-num { color: var(--accent2); }
.t3 .tier-num { color: var(--accent3); }

.tier-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.tier-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.tier-items li {
  font-size: 0.82rem;
  color: var(--muted);
  padding: 0.3rem 0.6rem;
  background: var(--surface2);
  border-radius: 6px;
}

/* ─── FEATURES ─── */
#features { background: var(--surface); }

#features .feat-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.feat-header {
  text-align: center;
  margin-bottom: 4rem;
}

.feat-header .section-desc { margin: 0 auto; }

.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feat-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.3s, box-shadow 0.3s;
}

.feat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
}

.feat-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feat-item h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feat-item p {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── ESG ─── */
#esg .esg-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.esg-bars { display: flex; flex-direction: column; gap: 1.5rem; }

.esg-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.esg-bar-val { color: var(--accent); }

.esg-bar-track {
  height: 8px;
  background: var(--surface2);
  border-radius: 999px;
  overflow: hidden;
}

.esg-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  width: 0;
  transition: width 1.5s ease;
}

/* ─── CTA ─── */
#cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg), var(--surface));
  position: relative;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, rgba(0,200,255,0.08), transparent 70%);
  pointer-events: none;
}

#cta .cta-inner {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
}

#cta h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

#cta p {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

/* ─── FOOTER ─── */
footer {
  padding: 3rem 6vw;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--accent); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--muted);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.footer-contact-item span.label {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  min-width: 32px;
}

.footer-contact-item a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-contact-item a:hover { color: var(--accent); }

/* ─── FLOW SVG ANIMATION ─── */
.flow-path {
  stroke-dasharray: 8 4;
  animation: dash 1.5s linear infinite;
}

@keyframes dash {
  to { stroke-dashoffset: -48; }
}

.node-pulse {
  animation: nodePulse 2.5s ease-in-out infinite;
}

@keyframes nodePulse {
  0%, 100% { r: 8; opacity: 1; }
  50% { r: 12; opacity: 0.6; }
}

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  #about .about-inner,
  #solution .sol-header,
  #esg .esg-inner { grid-template-columns: 1fr; gap: 2.5rem; }

  .sol-cards,
  .feat-grid { grid-template-columns: 1fr 1fr; }

  .prod-tiers { flex-direction: column; gap: 1rem; }
  .prod-tiers::before { display: none; }

  .nav-links { display: none; }
}

@media (max-width: 600px) {
  .sol-cards,
  .feat-grid { grid-template-columns: 1fr; }

  .stats-grid { gap: 2rem; }
}