/* ══════════════════════════════════════════════════════════════════════════
       AI Engine Page Styles
       ══════════════════════════════════════════════════════════════════════════ */

    /* ── Hero ── */
    .coho-hero {
      padding: 6rem 0 3rem;
      border-bottom: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }
    .coho-hero::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 600px;
      height: 600px;
      background: radial-gradient(ellipse at center, rgba(252,120,105,0.05), transparent 65%);
      pointer-events: none;
    }
    .coho-hero-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 4rem;
      align-items: center;
    }
    .coho-hero-text h1 {
      margin-bottom: 1.25rem;
    }
    .coho-hero-text p {
      font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
      font-weight: 300;
      color: var(--grey);
      max-width: 32rem;
      line-height: 1.7;
      margin-bottom: 2rem;
    }
    .coho-hero-btns {
      display: flex;
      gap: 0.75rem;
      flex-wrap: wrap;
    }

    /* Hero visual — animated data convergence */
    .coho-hero-visual {
      position: relative;
      width: 100%;
      aspect-ratio: 1;
      max-width: 420px;
      margin: 0 auto;
    }
    .coho-hero-ring {
      position: absolute;
      border-radius: 50%;
      border: 1px solid var(--border);
      animation: ringPulse 6s ease-in-out infinite;
    }
    .coho-hero-ring:nth-child(1) {
      inset: 0;
      border-color: rgba(252,120,105,0.08);
      animation-delay: 0s;
    }
    .coho-hero-ring:nth-child(2) {
      inset: 15%;
      border-color: rgba(252,120,105,0.12);
      animation-delay: 0.5s;
    }
    .coho-hero-ring:nth-child(3) {
      inset: 30%;
      border-color: rgba(252,120,105,0.18);
      animation-delay: 1s;
    }
    .coho-hero-center {
      position: absolute;
      inset: 40%;
      border-radius: 50%;
      background: var(--salmon-dim);
      border: 1.5px solid var(--salmon-bdr);
      display: flex;
      align-items: center;
      justify-content: center;
      animation: centerGlow 4s ease-in-out infinite;
    }
    .coho-hero-center svg {
      width: 28px;
      height: 28px;
      stroke: var(--salmon);
      fill: none;
      stroke-width: 1.5;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    /* Floating data particles */
    .coho-particle {
      position: absolute;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--salmon);
      opacity: 0;
      animation: particleFloat 5s ease-in-out infinite;
    }
    .coho-particle:nth-child(5)  { top: 5%;  left: 20%; animation-delay: 0s; }
    .coho-particle:nth-child(6)  { top: 15%; left: 80%; animation-delay: 0.7s; }
    .coho-particle:nth-child(7)  { top: 40%; left: 3%;  animation-delay: 1.4s; }
    .coho-particle:nth-child(8)  { top: 70%; left: 90%; animation-delay: 2.1s; }
    .coho-particle:nth-child(9)  { top: 85%; left: 15%; animation-delay: 2.8s; }
    .coho-particle:nth-child(10) { top: 60%; left: 5%;  animation-delay: 3.5s; }
    .coho-particle:nth-child(11) { top: 10%; left: 55%; animation-delay: 0.3s; }
    .coho-particle:nth-child(12) { top: 90%; left: 70%; animation-delay: 1.8s; }
    /* Labels floating near particles */
    .coho-hero-tag {
      position: absolute;
      font-size: 0.5625rem;
      font-family: var(--f-mono);
      color: var(--charcoal);
      letter-spacing: 0.05em;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 0.2rem 0.5rem;
      border-radius: var(--r-pill);
      white-space: nowrap;
      opacity: 0;
      animation: tagFloat 6s ease-in-out infinite;
    }
    .coho-hero-tag:nth-child(13) { top: 8%;  left: 5%;  animation-delay: 0.2s; }
    .coho-hero-tag:nth-child(14) { top: 22%; right: 2%; animation-delay: 1.2s; }
    .coho-hero-tag:nth-child(15) { top: 55%; left: -5%; animation-delay: 2.5s; }
    .coho-hero-tag:nth-child(16) { bottom: 12%; right: 0; animation-delay: 3.2s; }
    .coho-hero-tag:nth-child(17) { bottom: 25%; left: 2%; animation-delay: 0.8s; }

    @keyframes ringPulse {
      0%, 100% { opacity: 0.5; transform: scale(1); }
      50%      { opacity: 1; transform: scale(1.02); }
    }
    @keyframes centerGlow {
      0%, 100% { box-shadow: 0 0 0 0 rgba(252,120,105,0); }
      50%      { box-shadow: 0 0 30px 5px rgba(252,120,105,0.12); }
    }
    @keyframes particleFloat {
      0%   { opacity: 0; transform: translate(0, 0) scale(1); }
      20%  { opacity: 0.8; }
      80%  { opacity: 0.6; transform: translate(calc(50% - 50%), calc(50% - 50%)) scale(0.5); }
      100% { opacity: 0; transform: translate(calc(50% - 50%), calc(50% - 50%)) scale(0); }
    }
    @keyframes tagFloat {
      0%   { opacity: 0; transform: translateY(0); }
      15%  { opacity: 0.7; }
      70%  { opacity: 0.5; transform: translateY(-8px); }
      100% { opacity: 0; transform: translateY(-12px); }
    }

    /* ── Orchestration Flow (vertical timeline) ── */
    .coho-flow {
      padding: 5rem 0;
      border-bottom: 1px solid var(--border);
    }
    .coho-flow-header {
      margin-bottom: 3rem;
    }
    .coho-flow-header p {
      color: var(--grey);
      max-width: 42rem;
      margin-top: 0.75rem;
      line-height: 1.7;
      font-weight: 300;
    }

    /* Vertical timeline */
    .coho-timeline {
      position: relative;
      max-width: 52rem;
      margin: 0 auto;
      padding: 0 1rem;
    }
    /* Center spine */
    .coho-timeline::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 0;
      bottom: 0;
      width: 2px;
      background: var(--border);
      transform: translateX(-50%);
    }
    /* Animated fill on the spine */
    .coho-timeline-fill {
      position: absolute;
      left: 50%;
      top: 0;
      width: 2px;
      height: 0%;
      background: var(--salmon);
      transform: translateX(-50%);
      transition: height 0.6s ease;
      z-index: 1;
    }

    /* Each step */
    .coho-step {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 48px 1fr;
      gap: 0;
      align-items: start;
      padding: 2rem 0;
      opacity: 0.3;
      transition: opacity 0.5s ease;
    }
    .coho-step.active {
      opacity: 1;
    }
    /* Dot on the spine */
    .coho-step-dot {
      grid-column: 2;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--surface);
      border: 2px solid var(--border);
      position: relative;
      z-index: 2;
      transition: border-color 0.5s ease, box-shadow 0.5s ease;
    }
    .coho-step.active .coho-step-dot {
      border-color: var(--salmon);
      box-shadow: 0 0 16px rgba(252,120,105,0.25);
    }
    .coho-step-dot svg {
      width: 20px;
      height: 20px;
      stroke: var(--charcoal);
      fill: none;
      stroke-width: 1.5;
      stroke-linecap: round;
      stroke-linejoin: round;
      transition: stroke 0.5s ease;
    }
    .coho-step.active .coho-step-dot svg {
      stroke: var(--salmon);
    }
    /* Step number */
    .coho-step-num {
      position: absolute;
      top: -8px;
      right: -4px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--dark);
      border: 1.5px solid var(--border);
      font-size: 0.5625rem;
      font-weight: 600;
      color: var(--charcoal);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: border-color 0.5s ease, color 0.5s ease;
    }
    .coho-step.active .coho-step-num {
      border-color: var(--salmon);
      color: var(--salmon);
    }

    /* Content card — alternating sides */
    .coho-step-content {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 1.5rem;
      transition: border-color 0.5s ease;
    }
    .coho-step.active .coho-step-content {
      border-color: var(--salmon-bdr);
    }
    .coho-step-content h3 {
      font-size: 1rem;
      margin-bottom: 0.375rem;
    }
    .coho-step-content p {
      font-size: 0.9375rem;
      color: var(--grey);
      line-height: 1.65;
      font-weight: 300;
    }
    .coho-step-content .coho-step-detail {
      margin-top: 0.75rem;
      padding-top: 0.75rem;
      border-top: 1px solid var(--border);
      font-size: 0.6875rem;
      font-family: var(--f-mono);
      color: var(--charcoal);
      line-height: 1.6;
    }

    /* Odd steps: content on LEFT */
    .coho-step:nth-child(odd) .coho-step-content {
      grid-column: 1;
      grid-row: 1;
      text-align: right;
    }
    .coho-step:nth-child(odd) .coho-step-dot {
      grid-column: 2;
      grid-row: 1;
      justify-self: center;
    }
    .coho-step:nth-child(odd) .coho-step-spacer {
      grid-column: 3;
      grid-row: 1;
    }

    /* Even steps: content on RIGHT */
    .coho-step:nth-child(even) .coho-step-spacer {
      grid-column: 1;
      grid-row: 1;
    }
    .coho-step:nth-child(even) .coho-step-dot {
      grid-column: 2;
      grid-row: 1;
      justify-self: center;
    }
    .coho-step:nth-child(even) .coho-step-content {
      grid-column: 3;
      grid-row: 1;
    }

    /* ── Agent Cards ── */
    .coho-agents {
      padding: 5rem 0;
      border-bottom: 1px solid var(--border);
    }
    .coho-agents-header {
      margin-bottom: 3rem;
    }
    .coho-agents-header p {
      color: var(--grey);
      max-width: 42rem;
      margin-top: 0.75rem;
      line-height: 1.7;
      font-weight: 300;
    }
    .coho-agent-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .coho-agent-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 1.75rem;
      transition: border-color 0.2s, transform 0.2s;
    }
    .coho-agent-card:hover {
      border-color: var(--border-2);
      transform: translateY(-2px);
    }
    .coho-agent-icon {
      width: 40px;
      height: 40px;
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--salmon-dim);
      border: 1px solid var(--salmon-bdr);
      border-radius: 50%;
    }
    .coho-agent-icon svg {
      width: 18px;
      height: 18px;
      stroke: var(--salmon);
      fill: none;
      stroke-width: 1.5;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .coho-agent-card h3 {
      font-size: 1rem;
      margin-bottom: 0.5rem;
    }
    .coho-agent-card p {
      font-size: 0.9375rem;
      color: var(--grey);
      line-height: 1.65;
      font-weight: 300;
    }

    /* ── Data Sources ── */
    .coho-sources {
      padding: 5rem 0;
      background: var(--dark-2);
      border-bottom: 1px solid var(--border);
    }
    .coho-sources-header {
      margin-bottom: 3rem;
    }
    .coho-sources-header p {
      color: var(--grey);
      max-width: 42rem;
      margin-top: 0.75rem;
      line-height: 1.7;
      font-weight: 300;
    }
    .coho-tiers {
      display: flex;
      flex-direction: column;
      gap: 0;
      max-width: 48rem;
    }
    .coho-tier {
      display: grid;
      grid-template-columns: 7rem 1fr;
      gap: 1.5rem;
      align-items: start;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 1.5rem 1.75rem;
      transition: border-color 0.2s;
    }
    .coho-tier:hover {
      border-color: var(--border-2);
    }
    .coho-tier-badge {
      font-size: 0.6875rem;
      font-weight: 500;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--salmon);
      padding-top: 0.2rem;
    }
    .coho-tier h4 {
      font-size: 1rem;
      margin-bottom: 0.375rem;
    }
    .coho-tier p {
      font-size: 0.8125rem;
      color: var(--grey);
      line-height: 1.65;
      font-weight: 300;
    }
    .coho-tier-arrow {
      text-align: center;
      color: var(--charcoal);
      font-size: 0.6875rem;
      font-family: var(--f-mono);
      padding: 0.5rem 0 0.5rem 4rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .coho-tier-arrow::before {
      content: '';
      display: block;
      width: 1px;
      height: 12px;
      background: var(--border);
      margin: 0 auto;
    }
    .coho-tier-arrow svg {
      width: 14px;
      height: 14px;
      stroke: var(--salmon);
      fill: none;
      stroke-width: 1.5;
      stroke-linecap: round;
    }
    .coho-lineage-callout {
      background: var(--salmon-dim);
      border: 1px solid var(--salmon-bdr);
      border-radius: var(--r-card);
      padding: 1.25rem 1.5rem;
      margin-top: 1.5rem;
      max-width: 48rem;
      font-size: 0.875rem;
      color: var(--salmon-light);
      line-height: 1.6;
      display: flex;
      align-items: flex-start;
      gap: 0.75rem;
    }
    .coho-lineage-callout svg {
      width: 18px;
      height: 18px;
      stroke: var(--salmon);
      fill: none;
      stroke-width: 1.5;
      stroke-linecap: round;
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* ── Before/After Comparison ── */
    .coho-compare {
      padding: 5rem 0;
      border-bottom: 1px solid var(--border);
    }
    .coho-compare-header {
      margin-bottom: 3rem;
    }
    .coho-compare-header p {
      color: var(--grey);
      max-width: 42rem;
      margin-top: 0.75rem;
      line-height: 1.7;
      font-weight: 300;
    }
    .coho-compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    .coho-compare-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 2rem;
    }
    .coho-compare-card--old {
      border-color: var(--border);
    }
    .coho-compare-card--new {
      border-color: var(--salmon-bdr);
    }
    .coho-compare-label {
      font-size: 0.6875rem;
      font-weight: 500;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      gap: 0.625rem;
    }
    .coho-compare-card--old .coho-compare-label {
      color: var(--charcoal);
    }
    .coho-compare-card--new .coho-compare-label {
      color: var(--salmon);
    }
    .coho-compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .coho-compare-list li {
      display: flex;
      gap: 0.75rem;
      align-items: flex-start;
      font-size: 0.875rem;
      color: var(--grey);
      line-height: 1.55;
      font-weight: 300;
    }
    .coho-bullet-icon {
      width: 18px;
      height: 18px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .coho-bullet-icon svg {
      width: 10px;
      height: 10px;
      stroke: currentColor;
      fill: none;
      stroke-width: 2.5;
      stroke-linecap: round;
    }
    .coho-bullet-x {
      background: rgba(255,255,255,0.04);
      color: var(--charcoal);
    }
    .coho-bullet-check {
      background: var(--salmon-dim);
      color: var(--salmon);
    }

    /* ── Use Case Snapshots ── */
    .coho-cases {
      padding: 5rem 0;
      background: var(--dark-2);
      border-bottom: 1px solid var(--border);
    }
    .coho-cases-header {
      margin-bottom: 3rem;
    }
    .coho-cases-header p {
      color: var(--grey);
      max-width: 42rem;
      margin-top: 0.75rem;
      line-height: 1.7;
      font-weight: 300;
    }
    .coho-case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }
    .coho-case-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      transition: border-color 0.2s, transform 0.2s;
    }
    .coho-case-card:hover {
      border-color: var(--border-2);
      transform: translateY(-2px);
    }
    .coho-case-scenario {
      font-size: 0.75rem;
      font-weight: 500;
      color: var(--salmon);
      font-family: var(--f-mono);
      margin-bottom: 0.75rem;
      letter-spacing: 0.02em;
    }
    .coho-case-card h3 {
      font-size: 1rem;
      margin-bottom: 0.625rem;
    }
    .coho-case-card > p {
      font-size: 0.8125rem;
      color: var(--grey);
      line-height: 1.65;
      font-weight: 300;
      flex: 1;
    }
    .coho-case-result {
      margin-top: 1rem;
      padding-top: 0.75rem;
      border-top: 1px solid var(--border);
    }
    .coho-case-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      font-size: 0.6875rem;
      font-weight: 600;
      color: var(--salmon);
      background: var(--salmon-dim);
      border: 1px solid var(--salmon-bdr);
      padding: 0.25rem 0.75rem;
      border-radius: var(--r-pill);
      letter-spacing: 0.04em;
    }

    /* ── Bottom CTA ── */
    .coho-cta {
      padding: 5rem 0;
    }
    .coho-cta-box {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-card);
      padding: 3.5rem;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .coho-cta-box::before {
      content: '';
      position: absolute;
      bottom: -80px;
      left: 50%;
      transform: translateX(-50%);
      width: 500px;
      height: 300px;
      background: radial-gradient(ellipse at center, rgba(252,120,105,0.06), transparent 70%);
      pointer-events: none;
    }
    .coho-cta-box h2 {
      margin-bottom: 0.75rem;
      position: relative;
    }
    .coho-cta-box p {
      color: var(--grey);
      max-width: 28rem;
      margin: 0 auto 2rem;
      font-size: 1rem;
      position: relative;
      font-weight: 300;
    }
    .coho-cta-btns {
      display: flex;
      gap: 0.75rem;
      justify-content: center;
      position: relative;
      flex-wrap: wrap;
    }

    /* ── Responsive ── */
    @media (max-width: 991px) {
      .coho-hero-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .coho-hero-text {
        text-align: center;
      }
      .coho-hero-text p {
        margin-left: auto;
        margin-right: auto;
      }
      .coho-hero-btns {
        justify-content: center;
      }
      .coho-hero-visual {
        max-width: 300px;
      }
      .coho-agent-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      /* Timeline: single column on tablet */
      .coho-timeline::before {
        left: 24px;
      }
      .coho-timeline-fill {
        left: 24px;
      }
      .coho-step {
        grid-template-columns: 48px 1fr;
        gap: 0 1rem;
      }
      .coho-step-spacer {
        display: none;
      }
      .coho-step:nth-child(odd) .coho-step-content,
      .coho-step:nth-child(even) .coho-step-content {
        grid-column: 2;
        grid-row: 1;
        text-align: left;
      }
      .coho-step:nth-child(odd) .coho-step-dot,
      .coho-step:nth-child(even) .coho-step-dot {
        grid-column: 1;
        grid-row: 1;
      }
      /* Show all steps active on tablet */
      .coho-step {
        opacity: 1;
      }
      .coho-step .coho-step-dot {
        border-color: var(--salmon);
      }
      .coho-step .coho-step-dot svg {
        stroke: var(--salmon);
      }
      .coho-step .coho-step-num {
        border-color: var(--salmon);
        color: var(--salmon);
      }
      .coho-step .coho-step-content {
        border-color: var(--salmon-bdr);
      }
    }

    @media (max-width: 767px) {
      .coho-agent-grid {
        grid-template-columns: 1fr;
      }
      .coho-compare-grid {
        grid-template-columns: 1fr;
      }
      .coho-case-grid {
        grid-template-columns: 1fr;
      }
      .coho-tier {
        grid-template-columns: 1fr;
      }
      .coho-tier-badge {
        margin-bottom: 0.25rem;
      }
      .coho-tier-arrow {
        padding-left: 1.5rem;
      }
    }

    @media (max-width: 479px) {
      .coho-hero {
        padding: 5rem 0 2.5rem;
      }
      .coho-cta-box {
        padding: 2.5rem 1.5rem;
      }
    }