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

:root {
  --bg: #0f1117;
  --bg-warm: #131725;
  --text: #e2e4ed;
  --text-soft: #9aa0b8;
  --accent: #6c8cff;
  --accent-hover: #5a7aee;
  --accent-glow: rgba(108, 140, 255, 0.22);
  --mint: #5cbf6c;
  --mint-soft: rgba(92, 191, 108, 0.16);
  --lavender: #a78bfa;
  --lavender-soft: rgba(167, 139, 250, 0.16);
  --peach: #ff7a5c;
  --sky: #6bc5f7;
  --card: #181a23;
  --card-border: #2a2d3e;
  --surface-1: #1e2130;
  --surface-2: #121521;
  --radius: 20px;
  --radius-sm: 12px;
  --font-display: 'DM Sans', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --ease-fast: 0.2s;
  --ease-card: 0.3s;
  --shadow-soft: 0 8px 32px rgba(0,0,0,0.24);
  --shadow-medium: 0 10px 32px rgba(0,0,0,0.28);
  --shadow-strong: 0 12px 40px rgba(0,0,0,0.28);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.3);
}

html { scroll-behavior: smooth; }

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

body.cookie-banner-visible {
  padding-bottom: max(96px, calc(96px + env(safe-area-inset-bottom, 0px)));
}

/* ── Utility ── */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Animated grain overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background var(--ease-card), box-shadow var(--ease-card), backdrop-filter var(--ease-card);
}
nav.scrolled {
  background: rgba(24, 26, 35, 0.88);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--card-border);
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--lavender));
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 18px;
  transform: rotate(-3deg);
}
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-soft);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.nav-links a:hover { color: var(--text); }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: 60px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), background var(--ease-fast);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--accent);
  color: #fff!important;
  box-shadow: 0 4px 20px var(--accent-glow), 0 2px 4px rgba(0,0,0,0.06);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 8px 30px var(--accent-glow), 0 2px 8px rgba(0,0,0,0.08);
}
.btn-sm { padding: 10px 22px; font-size: 0.9rem; }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--card-border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  background: rgba(108, 140, 255, 0.08);
  box-shadow: 0 0 0 2px rgba(108, 140, 255, 0.08);
}
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; }

/* ── HERO ── */
.hero {
  padding: 160px 0 100px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--mint-soft);
  color: #1B8A6B;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 6px 16px;
  border-radius: 40px;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease both;
}
.hero-badge::before {
  content: '✦';
  font-size: 0.7rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent) 0%, var(--peach) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-soft);
  max-width: 460px;
  margin-bottom: 36px;
  animation: fadeInUp 0.6s ease 0.2s both;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

/* Hero visual – interactive tree preview */
.hero-visual {
  position: relative;
  animation: fadeInUp 0.8s ease 0.3s both;
}
.hero-visual-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  box-shadow: 0 24px 80px rgba(0,0,0,0.35), 0 4px 16px rgba(0,0,0,0.2);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.hero-visual-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--peach), var(--mint), var(--lavender), var(--sky));
}
.tree-demo {
  min-height: 280px;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  background:
    radial-gradient(circle at 20% 80%, rgba(108,140,255,0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(167,139,250,0.03) 0%, transparent 50%),
    linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.06));
  padding: 12px;
}
.tree-demo svg { width: 100%; height: 100%; min-height: 254px; }
.tree-demo .demo-link {
  fill: none;
  stroke: var(--link-color, #3a3f5c);
  stroke-width: 1.5;
  stroke-opacity: 0.6;
}
.tree-demo .demo-node circle {
  stroke-width: 2.5;
  cursor: pointer;
  transition: all 0.15s;
  filter: drop-shadow(0 0 3px rgba(108,140,255,0.15));
}
.tree-demo .demo-node.has-children:hover circle {
  filter: drop-shadow(0 0 10px rgba(108,140,255,0.4));
  stroke-width: 3;
}
.tree-demo .demo-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 12.5px;
  fill: var(--text);
  pointer-events: none;
}
.tree-demo .demo-label-leaf { font-size: 11.5px; }
.tree-demo .demo-toggle-mark {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  fill: #fff;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
}

/* Floating shapes behind hero */
.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  z-index: -1;
}
.hero-shape-1 { width: 340px; height: 340px; background: var(--peach); top: -60px; right: -80px; }
.hero-shape-2 { width: 260px; height: 260px; background: var(--lavender); bottom: -40px; left: -60px; opacity: 0.3; }

/* ── SECTION SHARED ── */
section { padding: 100px 0; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 560px;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .section-subtitle { margin: 0 auto; }

/* ── HOW IT WORKS ── */
.how-section { background: var(--bg-warm); }
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step;
}
.step-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  padding: 36px 28px;
  position: relative;
  transition: transform var(--ease-card), box-shadow var(--ease-card);
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}
.step-number {
  counter-increment: step;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3rem;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent) 0%, var(--peach) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}
.step-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 10px;
}
.step-card p {
  color: var(--text-soft);
  font-size: 0.95rem;
}

/* ── FEATURES ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  padding: 32px 26px;
  transition: transform var(--ease-card), box-shadow var(--ease-card);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-strong);
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 24px;
  margin-bottom: 20px;
}
.feature-icon.mint { background: var(--mint-soft); }
.feature-icon.lavender { background: var(--lavender-soft); }
.feature-icon.peach { background: rgba(255, 176, 136, 0.15); }
.feature-icon.sky { background: rgba(107, 197, 247, 0.15); }
.feature-icon.accent { background: rgba(108, 140, 255, 0.18); }
.feature-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 8px;
}
.feature-card p {
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.55;
}

/* ── EXPORT ── */
.export-section { background: var(--bg-warm); }
.export-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.export-card {
  background: var(--card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  padding: 28px 20px;
  text-align: center;
  transition: transform var(--ease-card), box-shadow var(--ease-card);
}
.export-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-medium);
}
.export-card .icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}
.export-card h4 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 4px;
}
.export-card p {
  font-size: 0.82rem;
  color: var(--text-soft);
}

/* ── USE CASES ── */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.usecase-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  padding: 28px 26px;
  transition: transform var(--ease-card), box-shadow var(--ease-card);
}
.usecase-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}
.usecase-emoji {
  font-size: 1.8rem;
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: #1e2130;
  border-radius: 14px;
  display: grid;
  place-items: center;
}
.usecase-card h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.usecase-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
}

/* ── PRIVACY ── */
.privacy-section {
  position: relative;
  overflow: hidden;
}
.privacy-inner {
  background: #111522;
  color: #fff;
  border-radius: 28px;
  padding: 72px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
}
.privacy-inner::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: var(--accent);
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  right: -100px;
  top: -100px;
}
.privacy-inner h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3vw, 2.6rem);
  line-height: 1.12;
  margin-bottom: 16px;
}
.privacy-inner p {
  color: rgba(255,255,255,0.76);
  font-size: 1.05rem;
  margin-bottom: 28px;
}
.privacy-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.privacy-features li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 500;
  font-size: 1rem;
}
.privacy-features li .check {
  width: 28px;
  height: 28px;
  background: rgba(62, 207, 165, 0.2);
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--mint);
  flex-shrink: 0;
}
.privacy-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.shield-icon {
  width: 180px;
  height: 180px;
  background: rgba(108, 140, 255, 0.09);
  border: 2px solid rgba(108, 140, 255, 0.2);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 72px;
  position: relative;
}
.shield-icon::after {
  content: '';
  position: absolute;
  inset: -16px;
  border: 1px dashed rgba(255,255,255,0.1);
  border-radius: 50%;
  animation: spin 30s linear infinite;
}

/* ── CTA FINAL ── */
.cta-section {
  text-align: center;
  padding: 120px 0;
}
.cta-section h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-soft);
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto 36px;
}
.cta-badges {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.cta-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-soft);
  background: #1a1e2c;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 6px 12px;
}
.cta-badge svg { flex-shrink: 0; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--card-border);
  padding: 48px 0;
  background: var(--surface-2);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy {
  font-size: 0.88rem;
  color: var(--text-soft);
}
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  font-size: 0.88rem;
  color: var(--text-soft);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.footer-links a:hover { color: var(--text); }

/* ── COOKIE BANNER ── */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  padding: 14px 20px;
  background: #181a23;
  border-top: 1px solid var(--card-border);
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.45);
  display: none;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 16px;
}

.cookie-banner.show { display: flex; }

.cookie-banner p {
  flex: 1;
  min-width: 220px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-soft);
  margin: 0;
}

.cookie-banner p a {
  color: var(--accent);
  text-decoration: none;
}

.cookie-banner p a:hover { text-decoration: underline; }

.cookie-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.btn-cookie {
  font-family: var(--font-display);
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: var(--surface-1);
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}

.btn-cookie:hover {
  border-color: var(--accent);
  background: rgba(108, 140, 255, 0.08);
}

.btn-cookie-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-cookie-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 16px rgba(108, 140, 255, 0.25);
}

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes drawLine {
  from { stroke-dashoffset: 200; }
  to { stroke-dashoffset: 0; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Tree SVG animation ── */
.tree-node { animation: fadeInUp 0.5s ease both; }
.tree-line { stroke-dasharray: 200; animation: drawLine 1s ease both; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .export-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 130px 0 70px; text-align: center; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .steps-row { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .export-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: 1fr; }
  .privacy-inner {
    grid-template-columns: 1fr;
    padding: 48px 28px;
    text-align: center;
  }
  .privacy-features li { justify-content: center; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .cookie-banner {
    padding-bottom: max(14px, env(safe-area-inset-bottom, 0px));
    padding-left: max(14px, env(safe-area-inset-left, 0px));
    padding-right: max(14px, env(safe-area-inset-right, 0px));
  }
  .nav-links.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #181a23;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    animation: fadeInUp 0.3s ease;
  }
}
@media (max-width: 480px) {
  .export-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
}

/* Mobile nav show state merged in max-width: 768px block above */