/* ==========================================================================
   Smart Assist Design System & Styles
   ========================================================================== */

:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Color Palette (Deep Slate & Emerald/Teal) */
  --bg-primary: #090e17;
  --bg-secondary: #0f172a;
  --bg-card: #131c31;
  --bg-card-hover: #18243e;
  --bg-card-alt: #162035;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(16, 185, 129, 0.4);

  --accent-primary: #10b981;
  --accent-primary-hover: #059669;
  --accent-secondary: #3b82f6;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dark: #0f172a;

  --whatsapp-green: #25d366;
  --whatsapp-dark: #075e54;
  --whatsapp-chat-bg: #0b141a;
  --whatsapp-msg-in: #202c33;
  --whatsapp-msg-out: #005c4b;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(16, 185, 129, 0.15);

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: var(--transition);
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.section-kicker {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

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

.highlight-text {
  color: var(--accent-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 28px;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #042f20;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  background-color: #34d399;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
  border: 1px solid var(--border-color);
  background: rgba(19, 28, 49, 0.6);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-outline-white {
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--text-primary);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-img {
  height: 38px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  display: block;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
}

.footer-logo-wrap {
  justify-content: center;
}

.brand-logo-footer {
  height: 52px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  display: block;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
}

.logo-icon {
  width: 34px;
  height: 34px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.logo-text strong {
  color: var(--accent-primary);
}

.badge-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 60px 0 80px;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-size: 2.75rem;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-item strong {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--accent-primary);
  font-weight: 800;
}

.stat-item span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

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

/* Video Frame Card */
.video-frame-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 12px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.video-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 14px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.video-title-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.video-responsive {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
}

.video-responsive iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-caption {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-align: center;
  padding: 12px 8px 4px;
}

/* ==========================================================================
   Problem vs Solution
   ========================================================================== */
.problem-section {
  padding: 80px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
}

.card-problem {
  border-color: rgba(239, 68, 68, 0.2);
}

.card-solution {
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.05);
}

.card-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-success {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.comparison-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.icon-cross {
  color: #f87171;
  font-weight: 800;
  font-size: 1.1rem;
  background: rgba(239, 68, 68, 0.1);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-check {
  color: #34d399;
  font-weight: 800;
  font-size: 1.1rem;
  background: rgba(16, 185, 129, 0.1);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.comparison-list strong {
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 4px;
}

.comparison-list p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   Cycle / Workflow Section
   ========================================================================== */
.cycle-section {
  padding: 90px 0;
}

.cycle-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.cycle-step {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  transition: var(--transition);
}

.cycle-step:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.3);
}

.step-number {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.05);
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.cycle-step h3 {
  font-size: 1.125rem;
  margin-bottom: 10px;
}

.cycle-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Interactive WhatsApp Simulator
   ========================================================================== */
.simulator-section {
  padding: 90px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.simulator-wrapper {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 48px;
}

/* Phone Mockup */
.phone-mockup {
  background: var(--whatsapp-chat-bg);
  border: 8px solid #1f2937;
  border-radius: 36px;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.6);
  height: 580px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.phone-header {
  background: var(--whatsapp-dark);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}

.chat-avatar {
  width: 38px;
  height: 38px;
  background: #128c7e;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.chat-info {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.chat-name {
  font-size: 0.9375rem;
  font-weight: 600;
}

.chat-status {
  font-size: 0.75rem;
  color: #a7f3d0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: #10b981;
  border-radius: 50%;
}

.chat-menu {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.25rem;
}

.chat-messages {
  flex-grow: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 16px 16px;
}

.msg-bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.84375rem;
  line-height: 1.45;
  position: relative;
  animation: fadeInMsg 0.3s ease-out;
}

@keyframes fadeInMsg {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.msg-user {
  align-self: flex-end;
  background: var(--whatsapp-msg-out);
  color: #fff;
  border-bottom-right-radius: 2px;
}

.msg-iara {
  align-self: flex-start;
  background: var(--whatsapp-msg-in);
  color: #e9edef;
  border-bottom-left-radius: 2px;
}

.msg-time {
  display: block;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: right;
  margin-top: 4px;
}

.chat-input-area {
  background: #202c33;
  padding: 10px 14px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.chat-input-area input {
  flex-grow: 1;
  background: #2a3942;
  border: none;
  border-radius: 20px;
  padding: 10px 16px;
  color: #fff;
  font-size: 0.8125rem;
  outline: none;
}

.chat-send-btn {
  width: 36px;
  height: 36px;
  background: #00a884;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}

/* Simulator Controls Panel */
.simulator-controls h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.simulator-controls > p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 24px;
}

.scenario-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.btn-scenario {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: var(--transition);
}

.btn-scenario:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-scenario.active {
  background: rgba(16, 185, 129, 0.08);
  border-color: var(--accent-primary);
}

.scenario-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-primary);
}

.btn-scenario strong {
  font-size: 1rem;
  color: var(--text-primary);
}

.btn-scenario span:last-child {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.simulator-cta-box {
  background: rgba(19, 28, 49, 0.7);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.simulator-cta-box h4 {
  font-size: 1.0625rem;
  margin-bottom: 6px;
}

.simulator-cta-box p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ==========================================================================
   Calculator Section
   ========================================================================== */
.calculator-section {
  padding: 90px 0;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 48px;
}

.calc-header {
  margin-bottom: 40px;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.calc-controls {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.calc-field label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.9375rem;
  margin-bottom: 12px;
}

.calc-field label strong {
  font-size: 1.125rem;
  color: var(--accent-primary);
}

.calc-field input[type="range"] {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
}

.calc-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.calc-results {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.result-box {
  padding: 24px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.result-box.danger {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.result-box.success {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.result-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.result-number {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
}

.result-box.danger .result-number {
  color: #f87171;
}

.result-box.success .result-number {
  color: #34d399;
}

.result-number small {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.result-subtext {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-section {
  padding: 90px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 50px auto 0;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-card.featured {
  background: var(--bg-card-alt);
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.1);
  transform: scale(1.02);
}

.featured-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-primary);
  color: #042f20;
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

.plan-header {
  margin-bottom: 24px;
}

.plan-name {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.plan-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.plan-badge.featured-badge {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.plan-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.plan-price {
  display: flex;
  align-items: baseline;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.plan-price .currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-right: 4px;
}

.plan-price .amount {
  font-family: var(--font-heading);
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.plan-price .period {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.plan-features li strong {
  color: var(--text-primary);
}

.plan-features .check {
  color: var(--accent-primary);
  font-weight: 800;
}

.highlight-feature {
  color: #34d399 !important;
}

.plan-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
}

.guarantee-text {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Testimonial Section
   ========================================================================== */
.testimonial-section {
  padding: 80px 0;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 48px;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.quote-mark {
  font-family: Georgia, serif;
  font-size: 5rem;
  line-height: 1;
  color: var(--accent-primary);
  opacity: 0.3;
  position: absolute;
  top: 20px;
  left: 30px;
}

.testimonial-quote {
  font-size: 1.1875rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-info strong {
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.author-info span {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   About Section (Douglas Authority)
   ========================================================================== */
.about-section {
  padding: 90px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.about-container {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 48px;
  align-items: center;
}

.experience-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 24px;
  text-align: center;
  margin-bottom: 16px;
}

.exp-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1;
  display: block;
}

.exp-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 8px;
  display: block;
}

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

.roles-tags span {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
}

.about-content-col p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-content-col strong {
  color: var(--text-primary);
}

.about-signature {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.about-signature strong {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--text-primary);
}

.about-signature span {
  font-size: 0.8125rem;
  color: var(--accent-primary);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-section {
  padding: 90px 0;
}

.faq-container {
  max-width: 800px;
}

.faq-accordion {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(16, 185, 129, 0.3);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--accent-primary);
  font-weight: 700;
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.final-cta-section {
  padding: 90px 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #064e3b 100%);
  border-top: 1px solid var(--border-color);
}

.final-cta-section h2 {
  font-size: 2.25rem;
  margin-bottom: 16px;
}

.final-cta-section p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto 32px;
}

.cta-buttons-center {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #060a12;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

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

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
}

/* ==========================================================================
   Visual Media Enhancements (Hero Mockup, Tech Banner, 3D Diagram)
   ========================================================================== */
.hero-media-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-mockup-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
}

.hero-mockup-card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 16px 48px rgba(16, 185, 129, 0.15);
  transform: translateY(-2px);
}

.hero-mockup-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.mockup-caption {
  padding: 12px 16px;
  background: rgba(15, 23, 42, 0.85);
  border-top: 1px solid var(--border-color);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Field Technician Visual Banner */
.tech-banner-wrapper {
  margin: 32px 0 48px;
}

.tech-banner-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.tech-banner-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
  filter: brightness(0.85);
}

.tech-banner-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 28px 24px;
  background: linear-gradient(180deg, transparent 0%, rgba(9, 14, 23, 0.92) 50%, rgba(9, 14, 23, 0.98) 100%);
  color: var(--text-primary);
}

.tech-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
}

.tech-banner-overlay h3 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  margin-bottom: 6px;
  color: #fff;
}

.tech-banner-overlay p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0;
}

/* 3D Cycle Diagram */
.cycle-diagram-wrapper {
  margin: 32px 0 48px;
}

.diagram-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  transition: var(--transition);
}

.diagram-card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 20px 60px rgba(16, 185, 129, 0.2);
}

.cycle-diagram-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.diagram-caption {
  padding: 14px 20px;
  background: rgba(15, 23, 42, 0.9);
  border-top: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

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

  .cycle-timeline {
    grid-template-columns: 1fr;
  }

  .simulator-wrapper {
    grid-template-columns: 1fr;
  }

  .phone-mockup {
    max-width: 380px;
    margin: 0 auto;
  }

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

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

  .pricing-card.featured {
    transform: none;
  }

  .about-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.125rem;
  }

  .main-nav {
    display: none;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    display: none;
  }

  .calc-card {
    padding: 24px;
  }

  .testimonial-card {
    padding: 32px 24px;
  }
}