/*
Theme Name: Add9 AI
Theme URI: https://add9.ai
Author: DCY Projects
Description: Applied AI for real business work — landing page theme.
Version: 3.0.0
Requires at least: 6.0
Tested up to: 6.7
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: add9
*/

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #f8f9fb;
  --color-white: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-primary: #4f6ef7;
  --color-primary-hover: #3b5de7;
  --color-primary-light: #eef1ff;
  --color-border: #e2e6ee;
  --color-input-bg: #f3f5f9;
  --color-pill-bg: #eef1f8;
  --color-pill-border: #d4daf0;
  --color-pill-text: #3b5de7;
  --color-success: #22c55e;
  --color-success-light: #dcfce7;
  --color-card-bg: #ffffff;
  --color-section-alt: #f1f3f9;
  --color-dark: #0f172a;
  --color-dark-card: #1e293b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
  --shadow-lg: 0 4px 24px rgba(0,0,0,.08);
  --shadow-xl: 0 8px 40px rgba(0,0,0,.10);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: 0.2s ease;
  --nav-height: 86px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.add9-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}
.add9-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.add9-nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.add9-logo-img {
  height: 75px;
  width: auto;
}
.add9-nav-links {
  display: flex;
  gap: 28px;
}
.add9-nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.add9-nav-link:hover { color: var(--color-primary); }

.add9-nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.add9-btn-cta-sm {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-pill);
  padding: 8px 20px;
  text-decoration: none;
  transition: background var(--transition);
}
.add9-btn-cta-sm:hover { background: var(--color-primary-hover); }

.add9-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.add9-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   LAYOUT WRAPPER
   ============================================================ */
.add9-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: var(--nav-height);
}

/* ============================================================
   BUTTONS (shared)
   ============================================================ */
.add9-btn-primary-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 28px;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(79,110,247,.25);
}
.add9-btn-primary-lg:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(79,110,247,.35);
}
.add9-btn-primary-lg svg { width: 18px; height: 18px; }
.add9-btn-primary-lg:disabled { opacity: .55; cursor: not-allowed; }

.add9-btn-outline-lg {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 28px;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
}
.add9-btn-outline-lg:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.add9-hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  padding: 0 24px 56px;
  min-height: calc(100vh - var(--nav-height));
}
.add9-hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border: 1px solid var(--color-pill-border);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.add9-hero-headline {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--color-text);
  margin-bottom: 20px;
}
.add9-hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  max-width: 540px;
}
.add9-hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Hero visual — flow diagram */
.add9-hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.add9-flow-diagram {
  display: flex;
  align-items: center;
  gap: 16px;
}
.add9-flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  box-shadow: var(--shadow-card);
  min-width: 100px;
  text-align: center;
}
.add9-flow-node svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary);
}
.add9-flow-node span {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1.3;
}
.add9-flow-center {
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  border-color: transparent;
}
.add9-flow-center span {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}
.add9-flow-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: orcaPulse 3s ease-in-out infinite;
}
.add9-flow-icon svg {
  width: 28px;
  height: 28px;
  stroke: #fff;
}
.add9-flow-arrow svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-border);
}
@keyframes orcaPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,.2); }
  50% { box-shadow: 0 0 0 12px rgba(255,255,255,0); }
}

/* ============================================================
   PROMISE BULLETS
   ============================================================ */
.add9-promise {
  padding: 48px 24px 56px;
}
.add9-promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.add9-promise-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.add9-promise-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.add9-promise-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.add9-promise-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-primary);
}
.add9-promise-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.add9-promise-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   GENERIC SECTIONS
   ============================================================ */
.add9-section {
  padding: 72px 24px;
}
.add9-section-alt {
  background: var(--color-section-alt);
}
.add9-section-title {
  font-size: 32px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -.5px;
}
.add9-section-sub {
  font-size: 16px;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.6;
}
.add9-section-desc {
  font-size: 15px;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.6;
  font-style: italic;
}
.add9-subsection-title {
  font-size: 26px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -.3px;
}

/* ============================================================
   INTERACTIVE AI INTAKE — WIZARD
   ============================================================ */
.add9-intake-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 36px 28px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

/* Progress bar */
.add9-wizard-progress {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}
.add9-wizard-track {
  flex: 1;
  height: 6px;
  background: var(--color-input-bg);
  border-radius: 3px;
  overflow: hidden;
}
.add9-wizard-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 0.4s ease;
}
.add9-wizard-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Wizard viewport — only shows one slide at a time */
.add9-wizard-viewport {
  position: relative;
  overflow: hidden;
  min-height: 220px;
}
.add9-wizard-slide {
  display: none;
  animation: wizardFadeIn 0.3s ease;
}
.add9-wizard-slide.active {
  display: block;
}
@keyframes wizardFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Question heading */
.add9-wizard-question {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  text-align: center;
}
.add9-wizard-context {
  font-size: 14px;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 24px;
}
.add9-wizard-question + .add9-intake-options,
.add9-wizard-question + .add9-intake-fields {
  margin-top: 24px;
}
.add9-optional {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-muted);
}

/* Option buttons — card style for wizard */
.add9-intake-options {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
  justify-items: center;
}
.add9-intake-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
  text-align: center;
  min-height: 72px;
  justify-content: center;
}
.add9-intake-option svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  flex-shrink: 0;
}
.add9-intake-option:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(79,110,247,.12);
}
.add9-intake-option.selected {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 12px rgba(79,110,247,.25);
}
.add9-intake-option.selected svg {
  stroke: #fff;
}

/* Large option cards (cadence) */
.add9-intake-options-lg {
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.add9-intake-options-lg .add9-intake-option {
  padding: 24px 16px;
  min-height: 90px;
}
.add9-intake-options-lg .add9-intake-option strong {
  font-size: 16px;
}
.add9-intake-options-lg .add9-intake-option span {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.3;
}
.add9-intake-options-lg .add9-intake-option.selected span {
  color: rgba(255,255,255,.8);
}

/* Constraint fields */
.add9-intake-fields {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

/* Wizard actions (step 4) */
.add9-wizard-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
}

/* Back button */
.add9-wizard-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 0;
  margin-top: 16px;
  transition: color var(--transition);
}
.add9-wizard-back:hover { color: var(--color-primary); }
.add9-wizard-back svg {
  width: 16px;
  height: 16px;
}

/* Skip button */
.add9-btn-skip {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 0;
  transition: color var(--transition);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.add9-btn-skip:hover { color: var(--color-primary); }

/* Intake result */
.add9-intake-result {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}
.add9-intake-result-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.add9-intake-result-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-success-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.add9-intake-result-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-success);
}
.add9-intake-result-header h3 {
  font-size: 20px;
  font-weight: 700;
}
.add9-intake-result-body {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 24px;
}
.add9-intake-result-body h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 20px 0 8px;
}
.add9-intake-result-body h4:first-child { margin-top: 0; }
.add9-intake-result-body ul {
  margin: 8px 0 8px 20px;
}
.add9-intake-result-body li {
  margin-bottom: 4px;
}
.add9-intake-result-body p {
  margin-bottom: 12px;
}
.add9-intake-result-cta {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}
.add9-intake-result-sub {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 10px;
}

/* ============================================================
   SOCIAL PROOF STRIP
   ============================================================ */
.add9-proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.add9-proof-card {
  text-align: center;
  padding: 24px;
}
.add9-proof-card blockquote {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  font-style: normal;
  line-height: 1.4;
}

/* ============================================================
   PRODUCT — 3 cards
   ============================================================ */
.add9-product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.add9-product-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.add9-product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.add9-product-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.add9-product-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   HOW IT WORKS — 5 cards
   ============================================================ */
.add9-how-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.add9-how-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.add9-how-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.add9-how-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}
.add9-how-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.add9-how-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   PLASTIC BY DESIGN — 3 cards
   ============================================================ */
.add9-plastic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.add9-plastic-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.add9-plastic-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.add9-plastic-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.add9-plastic-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   USE CASES — detailed cards
   ============================================================ */
.add9-usecase-detail {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  margin-bottom: 20px;
}
.add9-usecase-detail-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.add9-usecase-icon-lg {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.add9-usecase-icon-lg svg {
  width: 26px;
  height: 26px;
  stroke: var(--color-primary);
}
.add9-usecase-detail-header h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}
.add9-usecase-tagline {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
}
.add9-usecase-detail-body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.add9-usecase-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-primary);
}
.add9-usecase-col ul {
  list-style: none;
  padding: 0;
}
.add9-usecase-col li {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding: 4px 0 4px 16px;
  position: relative;
}
.add9-usecase-col li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: .5;
}

/* Industry tags strip */
.add9-industry-strip {
  margin-top: 40px;
  text-align: center;
}
.add9-industry-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 12px;
}
.add9-industry-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}
.add9-tag {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
}

/* ============================================================
   START SMALL — 2 column cards
   ============================================================ */
.add9-start-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}
.add9-start-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}
.add9-start-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}
.add9-start-card ul {
  list-style: none;
  padding: 0;
}
.add9-start-card li {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: 6px 0 6px 20px;
  position: relative;
}
.add9-start-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: .4;
}
.add9-start-card li strong {
  color: var(--color-text);
}

/* ============================================================
   PROOF LIST (checkmark items)
   ============================================================ */
.add9-proof-list {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.add9-proof-list-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-card);
}
.add9-proof-check {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-success-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.add9-proof-check svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-success);
}
.add9-proof-list-item p {
  font-size: 15px;
  color: var(--color-text);
  font-weight: 500;
}

/* ============================================================
   TRUST LADDER
   ============================================================ */
.add9-trust-ladder {
  max-width: 600px;
  margin: 0 auto;
}
.add9-trust-rung {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.add9-trust-marker {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: all var(--transition);
}
.add9-trust-rung.active .add9-trust-marker {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.add9-trust-content {
  padding-top: 6px;
}
.add9-trust-content h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.add9-trust-content p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
}
.add9-trust-connector {
  width: 2px;
  height: 24px;
  background: var(--color-border);
  margin-left: 19px;
}

/* ============================================================
   SECURITY — 3 cards
   ============================================================ */
.add9-security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.add9-security-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}
.add9-security-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
}
.add9-security-card ul {
  list-style: none;
  padding: 0;
}
.add9-security-card li {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding: 6px 0 6px 20px;
  position: relative;
}
.add9-security-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  opacity: .6;
}

/* ============================================================
   SAMPLE OUTPUTS
   ============================================================ */
.add9-sample-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.add9-sample-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}
.add9-sample-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.add9-sample-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.add9-sample-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.add9-sample-card p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}
.add9-sample-tag {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ============================================================
   SWARM vs SINGLE-THREAD COMPARISON
   ============================================================ */
.add9-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}
.add9-compare-card {
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}
.add9-compare-single {
  background: var(--color-white);
  border: 1px solid var(--color-border);
}
.add9-compare-swarm {
  background: var(--color-primary-light);
  border: 2px solid var(--color-primary);
}
.add9-compare-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
}
.add9-compare-swarm h4 {
  color: var(--color-primary);
}
.add9-compare-card ul {
  list-style: none;
  padding: 0;
}
.add9-compare-card li {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding: 6px 0 6px 20px;
  position: relative;
}
.add9-compare-single li::before {
  content: '\2715';
  position: absolute;
  left: 0;
  top: 6px;
  font-size: 12px;
  color: #ef4444;
}
.add9-compare-swarm li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  top: 6px;
  font-size: 12px;
  color: var(--color-success);
  font-weight: 700;
}

/* ============================================================
   FAQ
   ============================================================ */
.add9-faq-list {
  max-width: 700px;
  margin: 24px auto 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.add9-faq-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.add9-faq-item[open] {
  box-shadow: var(--shadow-card);
}
.add9-faq-item summary {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: color var(--transition);
}
.add9-faq-item summary::-webkit-details-marker { display: none; }
.add9-faq-item summary::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.add9-faq-item[open] summary::after {
  content: '\2212';
}
.add9-faq-item summary:hover {
  color: var(--color-primary);
}
.add9-faq-item p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  padding: 0 20px 16px;
}

/* ============================================================
   COMPANY — 3 cards
   ============================================================ */
.add9-company-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}
.add9-company-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
}
.add9-company-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.add9-company-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   FORM ELEMENTS (shared)
   ============================================================ */
.add9-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.add9-field input,
.add9-field textarea,
.add9-field select {
  width: 100%;
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  outline: none;
  transition: border var(--transition), box-shadow var(--transition);
  font-family: var(--font-sans);
}
.add9-field input::placeholder,
.add9-field textarea::placeholder {
  color: #9ca3af;
}
.add9-field input:focus,
.add9-field textarea:focus,
.add9-field select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.12);
}
.add9-field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.add9-form-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.add9-contact-card {
  max-width: 620px;
  margin: 0 auto;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
.add9-contact-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.add9-contact-success {
  text-align: center;
  padding: 24px 0;
}
.add9-contact-success p {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-top: 8px;
}
.add9-contact-success h3 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 12px;
}
.add9-success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-success-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
.add9-success-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-success);
}

/* ============================================================
   FOOTER
   ============================================================ */
.add9-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 24px;
}
.add9-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}
.add9-footer-brand {
  margin-bottom: 16px;
}
.add9-footer-logo-img {
  height: 64px;
  width: auto;
  opacity: .7;
}
.add9-footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
}
.add9-footer-links a {
  font-size: 13px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.add9-footer-links a:hover { color: var(--color-primary); }

.add9-footer-legal {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.add9-footer-legal a {
  font-size: 12px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.add9-footer-legal a:hover { color: var(--color-primary); }
.add9-footer-legal span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.add9-footer-copy {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.add9-spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Typing indicator */
.add9-typing {
  display: inline-flex;
  gap: 5px;
  padding: 8px 0;
}
.add9-typing span {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: .4;
  animation: typingBounce .6s infinite alternate;
}
.add9-typing span:nth-child(2) { animation-delay: .15s; }
.add9-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes typingBounce {
  to { opacity: 1; transform: translateY(-4px); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .add9-how-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .add9-hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 48px 24px;
    min-height: auto;
  }
  .add9-hero-sub { margin-left: auto; margin-right: auto; }
  .add9-hero-ctas { justify-content: center; }
  .add9-hero-visual { display: none; }

  .add9-promise-grid,
  .add9-product-grid,
  .add9-plastic-grid,
  .add9-security-grid,
  .add9-sample-grid,
  .add9-company-grid {
    grid-template-columns: 1fr 1fr;
  }
  .add9-how-grid {
    grid-template-columns: 1fr 1fr;
  }
  .add9-proof-strip {
    grid-template-columns: 1fr;
  }
  .add9-usecase-detail-body {
    grid-template-columns: 1fr;
  }
  .add9-compare-grid {
    grid-template-columns: 1fr;
  }
  .add9-start-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .add9-nav-links { display: none; }
  .add9-nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 12px;
    box-shadow: var(--shadow-lg);
  }
  .add9-nav-toggle { display: flex; }
  .add9-btn-cta-sm { display: none; }

  .add9-hero-headline { font-size: 30px; }
  .add9-hero-sub { font-size: 15px; }
  .add9-section-title { font-size: 26px; }

  .add9-contact-fields {
    grid-template-columns: 1fr;
  }
  .add9-intake-card { padding: 24px 20px; }
  .add9-intake-options { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .add9-intake-options-lg { grid-template-columns: 1fr; }
  .add9-wizard-question { font-size: 18px; }
}

@media (max-width: 480px) {
  .add9-hero { padding: 32px 16px; }
  .add9-hero-headline { font-size: 26px; }
  .add9-section { padding: 48px 16px; }
  .add9-promise { padding: 32px 16px; }

  .add9-promise-grid,
  .add9-product-grid,
  .add9-plastic-grid,
  .add9-security-grid,
  .add9-sample-grid,
  .add9-how-grid,
  .add9-company-grid {
    grid-template-columns: 1fr;
  }

  .add9-hero-ctas { flex-direction: column; }
  .add9-btn-primary-lg,
  .add9-btn-outline-lg { width: 100%; justify-content: center; }
}