/* SDPal Website — Premium Theme */
/* Based on onboarding: deep green-to-black, #22c55e accent, frosted glass */

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

:root {
  --bg: #000;
  --bg-deep: #011a0e;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(34,197,94,0.4);
  --green: #22c55e;
  --green-dark: #16a34a;
  --green-light: #4ade80;
  --green-glow: rgba(34,197,94,0.3);
  --green-subtle: rgba(34,197,94,0.1);
  --text: #fff;
  --text-secondary: rgba(255,255,255,0.6);
  --text-muted: rgba(255,255,255,0.35);
  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══ Buttons ═══ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(.21,1.02,.73,1);
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #fff;
  box-shadow: 0 4px 24px var(--green-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(34,197,94,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 1.5px solid rgba(34,197,94,0.35);
}
.btn-outline:hover {
  background: var(--green-subtle);
  border-color: var(--green);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text);
  border-color: rgba(255,255,255,0.2);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 15.5px;
  border-radius: var(--radius-lg);
}

.btn-block { width: 100%; }

/* ═══ Navbar ═══ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s ease;
}

.nav.scrolled {
  padding: 10px 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}

.nav-brand img { border-radius: 50%; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.nav-cta {
  padding: 9px 22px;
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 700;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px var(--green-glow);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(34,197,94,0.4);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ═══ Hero ═══ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: radial-gradient(ellipse at 50% 0%, #024e2c 0%, #011a0e 50%, #000 100%);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,197,94,0.2) 0%, transparent 70%);
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  animation: hero-glow-pulse 4s ease-in-out infinite;
  pointer-events: none;
}

.hero-glow-2 {
  width: 300px;
  height: 300px;
  top: 40%;
  left: 30%;
  background: radial-gradient(circle, rgba(34,197,94,0.1) 0%, transparent 70%);
  animation-delay: 2s;
}

@keyframes hero-glow-pulse {
  0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  50% { opacity: 1; transform: translateX(-50%) scale(1.2); }
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  max-width: 640px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: linear-gradient(90deg, var(--green), var(--green-dark));
  border-radius: 24px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: #fff;
  text-transform: uppercase;
  animation: badge-in 0.6s 0.2s cubic-bezier(.21,1.02,.73,1) both;
}

@keyframes badge-in {
  from { opacity: 0; transform: translateY(10px) scale(0.8); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.hero-title {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  color: #fff;
  animation: title-in 0.7s 0.3s cubic-bezier(.21,1.02,.73,1) both;
}

.hero-highlight {
  background: linear-gradient(90deg, #fff, #a7f3d0, #fff);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes title-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 500px;
  animation: fade-up 0.7s 0.5s ease both;
}

.hero-sub strong {
  color: var(--green);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fade-up 0.7s 0.6s ease both;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 24px;
  padding: 20px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  animation: fade-up 0.7s 0.8s ease both;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hero-stat-value {
  display: flex;
  align-items: baseline;
  line-height: 1;
}

.hero-stat-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--green);
}

.hero-stat-suffix {
  font-size: 20px;
  font-weight: 800;
  color: var(--green);
}

.hero-stat-label {
  font-size: 11.5px;
  color: var(--text-muted);
  font-weight: 500;
}

.hero-stat-sep {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* ═══ Section Shared ═══ */

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: var(--green-subtle);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: 24px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ═══ Features ═══ */

.features {
  padding: 100px 0;
  background: linear-gradient(180deg, #000 0%, var(--bg-deep) 50%, #000 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  position: relative;
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.35s cubic-bezier(.21,1.02,.73,1);
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(34,197,94,0.12), transparent);
  opacity: 0;
  transition: opacity 0.35s;
  border-radius: var(--radius);
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-subtle);
  border-radius: 12px;
  color: var(--green);
  margin-bottom: 16px;
  transition: transform 0.3s;
}

.feature-card:hover .feature-icon { transform: scale(1.1); }

.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  position: relative;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
}

/* ═══ How It Works ═══ */

.how {
  padding: 100px 0;
}

.steps {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  max-width: 440px;
  margin: 0 auto;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 0;
  width: 100%;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.step.visible {
  opacity: 1;
  transform: translateY(0);
}

.step:nth-child(1) { transition-delay: 0.1s; }
.step:nth-child(3) { transition-delay: 0.3s; }
.step:nth-child(5) { transition-delay: 0.5s; }

.step-num {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  border-radius: 50%;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 0 4px rgba(34,197,94,0.15), 0 0 20px rgba(34,197,94,0.2);
}

.step-content h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-line {
  width: 2px;
  height: 32px;
  background: linear-gradient(180deg, var(--green), rgba(34,197,94,0.1));
  margin-left: 21px;
}

/* ═══ Personalities ═══ */

.personalities {
  padding: 100px 0;
  background: linear-gradient(180deg, #000 0%, var(--bg-deep) 50%, #000 100%);
}

.persona-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.persona-card {
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: all 0.35s cubic-bezier(.21,1.02,.73,1);
}

.persona-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.persona-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 14px;
  overflow: hidden;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.1);
  transition: box-shadow 0.3s;
}

.persona-card:hover .persona-avatar {
  box-shadow: 0 0 0 3px var(--green-glow), 0 0 20px var(--green-glow);
}

.persona-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.persona-card h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
}

.persona-card p {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ═══ Science Section ═══ */

.science {
  padding: 100px 0;
}

.science-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.science-card {
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.35s ease;
}

.science-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.science-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-subtle);
  border-radius: 14px;
  color: var(--green);
  margin-bottom: 18px;
}

.science-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
}

.science-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.science-card strong {
  color: var(--green);
}

.science-bar {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.science-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.science-bar-track {
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.science-bar-fill {
  height: 100%;
  border-radius: 4px;
  background: rgba(255,255,255,0.15);
  width: 0;
  transition: width 1.2s cubic-bezier(0.25, 1, 0.5, 1);
}

.science-bar-fill-green {
  background: linear-gradient(90deg, var(--green), var(--green-light));
  box-shadow: 0 0 12px rgba(34,197,94,0.3);
}

.science-card.visible .science-bar-fill {
  width: var(--bar-w);
}

/* ═══ Social Proof ═══ */

.social-proof {
  padding: 60px 0;
  background: linear-gradient(180deg, #000 0%, var(--bg-deep) 50%, #000 100%);
}

.social-proof-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}

.proof-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.proof-num {
  font-size: 36px;
  font-weight: 900;
  color: var(--green);
  line-height: 1;
}

.proof-suffix {
  font-size: 24px;
  font-weight: 800;
  color: var(--green);
}

.proof-label {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
}

.proof-sep {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* ═══ Pricing ═══ */

.pricing {
  padding: 100px 0;
}

/* Billing Toggle */
.billing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 40px;
}

.billing-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.3s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.billing-label.active {
  color: var(--text);
}

.billing-save-badge {
  display: inline-block;
  padding: 3px 10px;
  background: var(--green-subtle);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 800;
  color: var(--green);
  letter-spacing: 0.3px;
}

.billing-switch {
  position: relative;
  width: 52px;
  height: 28px;
  background: var(--border);
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: background 0.3s;
  padding: 0;
}

.billing-switch.yearly {
  background: var(--green);
}

.billing-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

.billing-switch.yearly .billing-knob {
  transform: translateX(24px);
}

/* Original price strikethrough */
.price-original {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: line-through;
  min-height: 20px;
  margin-bottom: 4px;
  opacity: 0;
  transition: opacity 0.3s;
}

.price-original.show {
  opacity: 1;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 920px;
  margin: 0 auto;
}

.pricing-grid-2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 680px;
}

.price-card {
  position: relative;
  padding: 36px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
}

.price-card:hover {
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}

.price-card-popular {
  border-color: rgba(34,197,94,0.4);
  background: rgba(34,197,94,0.05);
  box-shadow: 0 0 60px rgba(34,197,94,0.1);
}

.price-card-popular:hover {
  border-color: var(--green);
  box-shadow: 0 0 80px rgba(34,197,94,0.15);
}

.price-popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 18px;
  background: linear-gradient(90deg, var(--green), var(--green-dark));
  border-radius: 20px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  white-space: nowrap;
}

.price-header h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 4px;
}

.price-desc {
  font-size: 13px;
  color: var(--text-muted);
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin: 24px 0 8px;
}

.price-currency {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-secondary);
}

.price-number {
  font-size: 52px;
  font-weight: 900;
  line-height: 1;
  color: var(--text);
}

.price-period {
  font-size: 14px;
  color: var(--text-muted);
  margin-left: 4px;
}

.price-save {
  display: inline-block;
  padding: 4px 12px;
  background: var(--green-subtle);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 8px;
}

.price-features {
  list-style: none;
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.price-features li svg { flex-shrink: 0; }

.price-features { flex: 1; }

.price-card .btn { margin-top: auto; }

/* ═══ Free tier disabled features ═══ */

.price-card-free .price-number { color: var(--text-muted); }

.price-feature-disabled {
  color: var(--text-muted) !important;
  opacity: 0.5;
}

/* ═══ Download Section ═══ */

.download {
  padding: 100px 0;
}

.download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
}

.download-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.download-icon img {
  border-radius: 50%;
  box-shadow: 0 0 30px rgba(34,197,94,0.2);
}

.download-info h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 4px;
}

.download-info p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.download-tags {
  display: flex;
  gap: 8px;
}

.download-tag {
  padding: 3px 10px;
  background: var(--green-subtle);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--green);
}

.download-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.download-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  flex: 1;
  min-width: 200px;
}

.download-step-num {
  width: 32px;
  height: 32px;
  min-width: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  border-radius: 50%;
  font-size: 13px;
  font-weight: 800;
  color: #fff;
}

.download-step-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.download-step-text strong {
  font-size: 13.5px;
  font-weight: 700;
}

.download-step-text span {
  font-size: 11.5px;
  color: var(--text-muted);
}

.download-step-arrow {
  color: var(--text-muted);
  flex-shrink: 0;
}

.download-redeem {
  text-align: center;
}

.download-redeem p {
  font-size: 13.5px;
  color: var(--text-muted);
}

/* ═══ Reviews ═══ */

.reviews {
  padding: 100px 0;
  background: linear-gradient(180deg, #000 0%, var(--bg-deep) 50%, #000 100%);
  overflow: hidden;
}

.reviews-carousel {
  position: relative;
  overflow: hidden;
}

/* Edge fade masks to hide partially visible cards */
.reviews-carousel::before,
.reviews-carousel::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}
.reviews-carousel::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-deep) 0%, transparent 100%);
}
.reviews-carousel::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-deep) 0%, transparent 100%);
}

.reviews-track {
  position: relative;
  overflow: visible;
}

.review-card {
  width: 340px;
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.review-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 14px;
}

.review-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

.review-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.review-grade {
  font-size: 11.5px;
  color: var(--text-muted);
  padding: 2px 8px;
  background: var(--green-subtle);
  border-radius: 6px;
}

.reviews-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
}

.reviews-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.reviews-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-subtle);
}

.reviews-dots {
  display: flex;
  gap: 8px;
}

.reviews-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: all 0.3s;
}

.reviews-dot.active {
  background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
}

/* ═══ FAQ ═══ */

.faq {
  padding: 100px 0;
  background: linear-gradient(180deg, #000 0%, var(--bg-deep) 50%, #000 100%);
}

.faq-list {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s;
}

.faq-item:hover, .faq-item.open {
  border-color: rgba(255,255,255,0.12);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  background: var(--bg-card);
  border: none;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: background 0.2s;
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-chevron {
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.3s;
  flex-shrink: 0;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--green);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 12px 22px 20px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ═══ CTA ═══ */

.cta {
  padding: 80px 0;
}

.cta-inner {
  position: relative;
  padding: 64px 40px;
  background: radial-gradient(ellipse at 50% 0%, #024e2c 0%, #011a0e 70%, #000 100%);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: 24px;
  text-align: center;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,197,94,0.2) 0%, transparent 70%);
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.cta-inner h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 900;
  margin-bottom: 12px;
  position: relative;
}

.cta-inner p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  position: relative;
}

.cta-inner .btn { position: relative; }

/* ═══ Footer ═══ */

.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
}

.footer-brand img { border-radius: 50%; }

.footer-tagline {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.footer-bottom {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-bottom strong { color: var(--green); }

/* ═══ Scroll Animations ═══ */

.feature-card,
.persona-card,
.price-card,
.faq-item,
.step-line,
.science-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.35s, background 0.35s, box-shadow 0.35s;
}

.feature-card.visible,
.persona-card.visible,
.price-card.visible,
.faq-item.visible,
.step-line.visible,
.science-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grids */
.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.05s; }
.feature-card:nth-child(3) { transition-delay: 0.1s; }
.feature-card:nth-child(4) { transition-delay: 0.15s; }
.feature-card:nth-child(5) { transition-delay: 0.2s; }
.feature-card:nth-child(6) { transition-delay: 0.25s; }
.feature-card:nth-child(7) { transition-delay: 0.3s; }
.feature-card:nth-child(8) { transition-delay: 0.35s; }
.feature-card:nth-child(9) { transition-delay: 0.4s; }
.feature-card:nth-child(10) { transition-delay: 0.45s; }
.feature-card:nth-child(11) { transition-delay: 0.5s; }
.feature-card:nth-child(12) { transition-delay: 0.55s; }

.persona-card:nth-child(1) { transition-delay: 0s; }
.persona-card:nth-child(2) { transition-delay: 0.05s; }
.persona-card:nth-child(3) { transition-delay: 0.1s; }
.persona-card:nth-child(4) { transition-delay: 0.15s; }
.persona-card:nth-child(5) { transition-delay: 0.2s; }
.persona-card:nth-child(6) { transition-delay: 0.25s; }

/* ═══ Responsive ═══ */

@media (max-width: 900px) {
  .features-grid { grid-template-columns: 1fr 1fr; }
  .persona-grid { grid-template-columns: repeat(3, 1fr); }
  .science-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .social-proof-inner { gap: 24px; }
  .proof-sep { width: 40px; height: 1px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .hero { padding: 100px 20px 60px; }
  .hero-title { font-size: 32px; }
  .hero-sub { font-size: 15px; }
  .hero-stats { flex-direction: column; gap: 16px; padding: 20px; }
  .hero-stat-sep { width: 40px; height: 1px; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto; }
  .download-card { flex-direction: column; text-align: center; }
  .download-left { flex-direction: column; }
  .download-steps { flex-direction: column; }
  .download-step-arrow { transform: rotate(90deg); }
  .review-card { width: 300px; }

  .cta-inner { padding: 48px 24px; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .persona-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
}

/* ═══ Particle Dots ═══ */

.hero-particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(34,197,94,0.4);
  animation: float-particle linear infinite;
  pointer-events: none;
}

@keyframes float-particle {
  0% { transform: translateY(0) scale(1); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100vh) scale(0.5); opacity: 0; }
}