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

.observe.in-view {
    opacity: 1;
    transform: translateY(0);
}


section {
    padding: var(--space-20) 0;
}

.e-span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--secondary-green);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-3);
    display: block;
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto var(--space-12);
}

.tech-hero {
    padding: 180px 0 160px 0;
    background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.8), rgba(240, 253, 244, 0.9)), linear-gradient(120deg, #fdf2f8, #f0fdf4);
    background: #f7f8fa;
}

.hero-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-10);
    align-items: stretch;
}

.hero-content h1 {
    margin-bottom: var(--space-4);
}

.hero-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    margin-bottom: var(--space-6);
}

.hero-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-top: 30px;
}

.hero-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(12px);
}

.hero-process h3,
.hero-stats h3 {
    margin-bottom: var(--space-4);
}

.hero-process ul {
    list-style: none;
    padding-left: 0;
    display: grid;
    gap: var(--space-4);
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(120px, 1fr));
    gap: var(--space-4);
}

.metric span {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-primary);
}

.metric p {
    margin-top: var(--space-1);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.hero-stack {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-5);
    display: grid;
    gap: var(--space-3);
}

.hero-stack span {
    font-weight: 600;
    display: block;
}

.hero-stack p {
    margin-top: var(--space-1);
}


.hero-process li span {
    display: block;
    font-weight: 600;
}

.diagram-node {
    border-left: 4px solid var(--color-border);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
}

.diagram-node--edge {
    border-color: var(--primary-color);
}

.diagram-node--data {
    border-color: var(--secondary-green);
}

.diagram-node--ai {
    border-color: var(--accent-teal);
}

.diagram-node--control {
    border-color: #f97316;
}

.diagram-node h4 {
    margin-bottom: var(--space-2);
}

.diagram-connector {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.tech-architecture {
    background: var(--color-white);
}

.architecture-track {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
    align-items: stretch;
}

.architecture-card {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.step-index {
    display: inline-flex;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--secondary-green);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-4);
}

.architecture-connector {
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-green));
    border-radius: 999px;
}

/* Architecture Diagram - Vertical Flow */
.architecture-diagram {
    margin: var(--space-12) auto 0;
}

.diagram-visual {
    position: relative;
    /* display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%; */
}

/* .flow-right {
    width: 50%;
} */

.flow-right img {
    width: 50%;
    height: auto;
    object-fit: contain;
}

.diagram-flow {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    position: relative;
}

.flow-item {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--secondary-green);
    transition: all 0.3s ease;
    position: relative;
}

.flow-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
    border-left-width: 6px;
}

.flow-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--secondary-green);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 138, 76, 0.3);
}

.flow-content {
    flex: 1;
}

.flow-content h4 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 var(--space-2) 0;
}

.flow-content p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.6;
}

.flow-arrow {
    width: 2px;
    height: 40px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-green));
    margin: 0 auto;
    position: relative;
    border-radius: 2px;
}

.flow-arrow::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--secondary-green);
}

/* .tech-capabilities{
    background-color: var(--color-gray-50);
} */

.capability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
}

.capability-card {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.cap-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-green);
}

.cap-icon svg {
    width: 32px;
    height: 32px;
}

.tech-timeline {
    background: #fff;
}

.implementation-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.implementation-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    border-top: 4px solid transparent;
    transition: all 0.3s ease;
}

.implementation-card:hover {
    border-top-color: var(--secondary-green);
}

.step-badge {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-primary);
}

.step-duration {
    margin-top: auto;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 600;
}

.ab-test {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
}

.ab-test__summary {
    flex: 2;
}

.ab-test__stats {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-4);
}

.ab-test__stats span {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--secondary-green);
}

.tech-validation {
    background: #f9fafb;
}

.validation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
    align-items: stretch;
}

.validation-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
}

.validation-card ul {
    margin-top: var(--space-4);
    display: grid;
    gap: var(--space-2);
}

.validation-links {
    margin-top: var(--space-4);
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.validation-links a {
    text-decoration: none;
    font-weight: 600;
    color: var(--secondary-green);
}

.chart-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
}

.graph-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    font-weight: 600;
}

.graph-lines {
    height: 180px;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    position: relative;
    margin-bottom: var(--space-4);
}

.line {
    position: absolute;
    width: 100%;
    height: 4px;
    border-radius: 4px;
    animation: pulse 4s infinite ease-in-out;
}

.line-manual {
    top: 40%;
    background: #9ca3af;
}

.line-ai {
    top: 60%;
    background: var(--secondary-green);
}

@keyframes pulse {
    0% {
        opacity: 0.3;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.3;
    }
}



.cta-card {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: var(--color-white);
    padding: var(--space-10);
    border-radius: var(--radius-xl);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    box-shadow: var(--shadow-lg);
}

.cta-card .btn {
    white-space: nowrap;
    padding: 10px 40px;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    align-items: flex-start;
}

.cta-actions span {
    font-size: var(--font-size-sm);
    color: var(--color-gray-300);
}

.tech-case-studies {
    background: var(--color-gray-50);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.case-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.case-card__header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-3);
}

.case-card ul {
    list-style: none;
    padding-left: 0;
}

.case-card ul li::before {
    content: '✓';
    color: var(--secondary-green);
    margin-right: var(--space-2);
}

.case-cta {
    margin-top: var(--space-8);
    text-align: center;
}

.tech-about {
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.about-card {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
}

.cooperation-table {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.cooperation-row {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    border: 1px solid var(--color-border);
}

.cooperation-row span {
    font-weight: 600;
    display: block;
    margin-bottom: var(--space-2);
}

.qa-card {
    margin-top: var(--space-6);
    background: var(--color-white);
    border-left: 4px solid var(--secondary-green);
    padding: var(--space-4);
    border-radius: var(--radius-md);
}

.qa-card ol {
    margin-left: var(--space-4);
}

.tech-contact {
    background: var(--color-gray-50);
}

.contact-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
}

.contact-info ul {
    list-style: none;
    padding-left: 0;
    margin-top: var(--space-4);
    display: grid;
    gap: var(--space-2);
}

.contact-form {
    display: grid;
    gap: var(--space-4);
}

.contact-form label {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-weight: 500;
    color: var(--color-text);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    font-size: var(--font-size-base);
    font-family: inherit;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: 2px solid var(--secondary-green);
}

.form-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
}

.form-success {
    margin-top: var(--space-2);
    background: var(--color-gray-100);
    border-left: 4px solid var(--secondary-green);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}



.section-header h2 {
    font-size: 36px;
    margin-bottom: 12px;
}

.cta-content h2 {
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 16px;
    color: #fff;
    opacity: 0.8;
}

.ab-test__summary h3{
    font-size: 26px;
    margin-bottom: 15px;
}

.ab-test__summary ul li{
    position: relative;
    padding-left: 15px;
}
.ab-test__summary ul li::before {
    content: '•';
    color: var(--secondary-green);
    position: absolute;
    left: 0;
}

.validation-card h2{
    font-size: 26px;
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .hero-layout {
        grid-template-columns: 1fr;
    }

    .hero-architecture {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }

    .hero-arch-card {
        padding: var(--space-4);
    }

    .hero-stats-grid {
        grid-template-columns: repeat(2, minmax(100px, 1fr));
    }

    .ab-test {
        flex-direction: column;
        padding: 20px;
    }

    .ab-test__summary h3{
        font-size: 20px;
        margin-bottom: 15px;
    }

    .architecture-track {
        grid-template-columns: 1fr;
    }

    .architecture-diagram {
        margin-top: var(--space-8);
    }

    .flow-item {
        flex-direction: column;
        text-align: center;
        padding: var(--space-5);
    }

    .flow-item:hover {
        transform: translateY(-4px);
    }

    .flow-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-base);
    }

    .flow-arrow {
        height: 30px;
    }

    .implementation-steps {
        grid-template-columns: 1fr;
    }

    .cta-actions {
        align-items: center;
    }

    .tech-hero{
        padding: 100px 0 50px 0;
    }
    .hero-content h1{
        font-size: 26px;
    }
    .hero-content p{
        font-size: 15px;
    }
    .tech-architecture{
        padding: 50px 0;
    }
    .section-header h2{
        font-size: 25px;
    }
    section{
        padding: 50px 0;
    }
    .section-header{
        max-width: 100%;
        margin-bottom: 20px;
    }
    .capability-card h4,.implementation-card h4{
        font-size: 20px;
    }
    .capability-card p{
        font-size: 14px;
    }
    .cap-icon{
        width: 46px;
        height: 46px;
    }

    .ab-test__stats{
        display: flex;
        flex-direction: column;
    }

    .validation-card{
        padding: 20px;
    }

    .validation-card h2{
        font-size: 20px;
        margin-bottom: 15px;
    }
    .validation-card p{
        font-size: 14px;
    }
    .validation-card ul li{
        font-size: 14px;
    }
    .validation-links a{
        font-size: 14px;
    }

    .cta-card{
        padding: 30px 20px;
    }
    .cta-card h2{
        font-size: 20px;
    }
    .cta-card .btn-primary{
        font-size: 15px;
    }

    .cta-content p{
        font-size: 14px;
    }
}