/* ============================================
       About Page - Industrial High Contrast
       关于俱成 - 高对比工业风
       ============================================ */

    /* ---- Base ---- */
    body {
        color: var(--jc-gray-700);
    }

    /* ---- Industrial Buttons ---- */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: var(--space-2);
        padding: 0 var(--space-5);
        height: 44px;
        font-size: var(--text-sm);
        font-weight: 600;
        border-radius: var(--radius-sm);
        border: 1.5px solid transparent;
        transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.1s ease;
        white-space: nowrap;
        cursor: pointer;
        letter-spacing: 0.02em;
    }

    .btn:active {
        transform: translateY(1px);
    }

    .btn-primary {
        background: var(--cta-amber-500);
        color: #FFFFFF;
        border-color: var(--cta-amber-500);
    }

    .btn-primary:hover {
        background: var(--cta-amber-600);
        border-color: var(--cta-amber-600);
    }

    .btn-primary::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.15) 50%, transparent 70%);
        transform: translateX(-100%);
        transition: transform 0.6s ease;
        pointer-events: none;
    }

    .btn-primary:hover::after {
        transform: translateX(100%);
    }

    .btn-primary:active {
        background: var(--cta-amber-700);
        border-color: var(--cta-amber-700);
    }

    .btn-lg {
        height: 52px;
        padding: 0 var(--space-6);
        font-size: var(--text-base);
    }

    /* ===== Page Hero (Deep Blue Gradient + Image) ===== */
    .page-hero {
        position: relative;
        padding-top: 120px;
        padding-bottom: var(--space-8);
        background: linear-gradient(135deg, var(--jc-blue-800) 0%, var(--jc-blue-700) 50%, var(--jc-blue-600) 100%);
        overflow: hidden;
    }

    .page-hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background:
            radial-gradient(ellipse at 10% 20%, rgba(245, 124, 0, 0.08) 0%, transparent 50%),
            radial-gradient(ellipse at 90% 80%, rgba(10, 74, 143, 0.5) 0%, transparent 50%);
        pointer-events: none;
    }

    .page-hero-inner {
        position: relative;
        display: grid;
        grid-template-columns: 6fr 4fr;
        gap: var(--space-8);
        align-items: center;
    }

    /* Breadcrumb */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        font-size: var(--text-sm);
        color: var(--jc-blue-200);
        margin-bottom: var(--space-5);
    }

    .breadcrumb a {
        color: var(--jc-blue-200);
        transition: color 0.2s ease;
    }

    .breadcrumb a:hover {
        color: var(--jc-amber-400);
    }

    .breadcrumb .sep {
        color: rgba(255, 255, 255, 0.3);
    }

    .breadcrumb .current {
        color: #FFFFFF;
        font-weight: 500;
    }

    .page-hero-title {
        font-size: var(--text-5xl);
        font-weight: 700;
        color: #FFFFFF;
        line-height: var(--leading-tight);
        margin-bottom: var(--space-5);
        letter-spacing: -0.01em;
    }

    .page-hero-mission {
        font-size: var(--text-lg);
        color: var(--jc-blue-100);
        line-height: var(--leading-relaxed);
        margin-bottom: var(--space-7);
        max-width: 520px;
    }

    .page-hero-mission strong {
        color: #FFFFFF;
        font-weight: 600;
    }

    /* Hero Stats */
    .hero-stats-row {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-5);
    }

    .hero-stat-card {
        text-align: left;
        border-left: 3px solid var(--jc-amber-500);
        padding-left: var(--space-4);
    }

    .hero-stat-number {
        font-family: var(--font-mono);
        font-size: var(--text-4xl);
        font-weight: 700;
        color: var(--jc-amber-400);
        line-height: 1;
        margin-bottom: var(--space-2);
    }

    .hero-stat-label {
        font-size: var(--text-sm);
        color: var(--jc-blue-100);
        font-weight: 500;
    }

    /* Hero Image */
    .page-hero-image {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        aspect-ratio: 4 / 3;
        border: 2px solid rgba(255, 255, 255, 0.15);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    }

    .page-hero-image::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        border: 1px solid rgba(245, 124, 0, 0.3);
        border-radius: var(--radius-md);
        pointer-events: none;
    }

    .page-hero-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .hero-image-frame {
        position: absolute;
        top: -12px;
        right: -12px;
        width: 60px;
        height: 60px;
        border-top: 3px solid var(--jc-amber-500);
        border-right: 3px solid var(--jc-amber-500);
        border-radius: 0 var(--radius-md) 0 0;
        pointer-events: none;
    }

    .hero-image-frame-bl {
        position: absolute;
        bottom: -12px;
        left: -12px;
        width: 60px;
        height: 60px;
        border-bottom: 3px solid var(--jc-amber-500);
        border-left: 3px solid var(--jc-amber-500);
        border-radius: 0 0 0 var(--radius-md);
        pointer-events: none;
    }

    /* ===== Section Header ===== */
    .section-header {
        text-align: center;
        margin-bottom: var(--space-8);
    }

    .section-eyebrow {
        display: inline-block;
        font-size: var(--text-xs);
        font-weight: 700;
        color: var(--jc-amber-600);
        letter-spacing: 0.15em;
        text-transform: uppercase;
        margin-bottom: var(--space-3);
        font-family: var(--font-mono);
    }

    .section-title {
        font-size: var(--text-4xl);
        font-weight: 700;
        color: var(--jc-gray-900);
        line-height: var(--leading-tight);
        margin-bottom: var(--space-4);
    }

    .section-desc {
        font-size: var(--text-lg);
        color: var(--jc-gray-600);
        max-width: 640px;
        margin: 0 auto;
        line-height: var(--leading-relaxed);
    }

    /* ===== Company Profile (White BG) ===== */
    .profile-section {
        background: #FFFFFF;
        padding: var(--space-9) 0;
    }

    .profile-content {
        display: grid;
        grid-template-columns: 6fr 4fr;
        gap: var(--space-8);
        align-items: start;
    }

    .profile-text p {
        font-size: var(--text-base);
        color: var(--jc-gray-700);
        line-height: var(--leading-relaxed);
        margin-bottom: var(--space-5);
    }

    .profile-text p:last-child {
        margin-bottom: 0;
    }

    .profile-text strong {
        color: var(--jc-blue-800);
        font-weight: 700;
    }

    .profile-image-wrap {
        position: relative;
    }

    .profile-image {
        border-radius: var(--radius-md);
        overflow: hidden;
        aspect-ratio: 4 / 3;
        border: 1px solid var(--jc-gray-200);
    }

    .profile-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .profile-image-caption {
        margin-top: var(--space-3);
        font-size: var(--text-sm);
        color: var(--jc-gray-500);
        text-align: center;
        font-style: italic;
    }

    .profile-accent-bar {
        position: absolute;
        top: 16px;
        left: -16px;
        width: 48px;
        height: 4px;
        background: var(--jc-amber-500);
        border-radius: var(--radius-sm);
    }

    /* ===== Core Business (Light Gray BG) ===== */
    .business-section {
        background: var(--jc-gray-50);
        padding: var(--space-9) 0;
    }

    .business-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-5);
    }

    .business-card {
        background: #FFFFFF;
        border: 1px solid var(--jc-gray-200);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        display: flex;
        flex-direction: column;
    }

    .business-card:hover {
        border-color: var(--jc-blue-300);
        box-shadow: 0 8px 24px rgba(10, 74, 143, 0.1);
        transform: translateY(-2px);
    }

    .business-card-image {
        aspect-ratio: 16 / 10;
        overflow: hidden;
        position: relative;
    }

    .business-card-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

    .business-card:hover .business-card-image img {
        transform: scale(1.05);
    }

    .business-card-body {
        padding: var(--space-6);
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .business-card-title {
        font-size: var(--text-xl);
        font-weight: 700;
        color: var(--jc-gray-900);
        margin-bottom: var(--space-3);
    }

    .business-card-desc {
        font-size: var(--text-sm);
        color: var(--jc-gray-600);
        line-height: var(--leading-relaxed);
        margin-bottom: var(--space-5);
        flex: 1;
    }

    .business-card-link {
        display: inline-flex;
        align-items: center;
        gap: var(--space-2);
        font-size: var(--text-sm);
        font-weight: 600;
        color: var(--jc-blue-600);
        transition: color 0.2s ease, gap 0.2s ease;
    }

    .business-card-link:hover {
        color: var(--jc-amber-600);
        gap: var(--space-3);
    }

    .business-card-link svg {
        width: 14px;
        height: 14px;
    }

    /* ===== Timeline (White BG) ===== */
    .timeline-section {
        background: #FFFFFF;
        padding: var(--space-9) 0;
    }

    .timeline {
        position: relative;
        max-width: 900px;
        margin: 0 auto;
    }

    .timeline::before {
        content: '';
        position: absolute;
        left: 50%;
        top: 0;
        bottom: 0;
        width: 2px;
        background: var(--jc-gray-200);
        transform: translateX(-50%);
    }

    .timeline-item {
        position: relative;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
        margin-bottom: var(--space-8);
    }

    .timeline-item:last-child {
        margin-bottom: 0;
    }

    .timeline-dot {
        position: absolute;
        left: 50%;
        top: 8px;
        width: 18px;
        height: 18px;
        background: var(--jc-amber-500);
        border: 4px solid #FFFFFF;
        border-radius: 50%;
        transform: translateX(-50%);
        box-shadow: 0 0 0 2px var(--jc-amber-500);
        z-index: 2;
    }

    .timeline-content-left,
    .timeline-content-right {
        padding: var(--space-5);
    }

    .timeline-content-left {
        text-align: right;
        padding-right: calc(var(--space-8) + 10px);
    }

    .timeline-content-right {
        text-align: left;
        padding-left: calc(var(--space-8) + 10px);
    }

    .timeline-year {
        font-family: var(--font-mono);
        font-size: var(--text-3xl);
        font-weight: 700;
        color: var(--jc-amber-600);
        margin-bottom: var(--space-2);
        line-height: 1;
    }

    .timeline-event {
        font-size: var(--text-base);
        color: var(--jc-gray-700);
        line-height: var(--leading-relaxed);
    }

    .timeline-event strong {
        color: var(--jc-gray-900);
        font-weight: 700;
    }

    /* ===== Certificates (Deep Blue BG) ===== */
    .certificates-section {
        background: linear-gradient(180deg, var(--jc-blue-800) 0%, var(--jc-blue-900) 100%);
        padding: var(--space-9) 0;
        position: relative;
        overflow: hidden;
    }

    .certificates-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(ellipse at 50% 0%, rgba(245, 124, 0, 0.06) 0%, transparent 60%);
        pointer-events: none;
    }

    .certificates-section .section-header {
        position: relative;
    }

    .certificates-section .section-eyebrow {
        color: var(--jc-amber-400);
    }

    .certificates-section .section-title {
        color: #FFFFFF;
    }

    .certificates-section .section-desc {
        color: var(--jc-blue-200);
    }

    .cert-wall {
        position: relative;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-5);
    }

    .cert-wall .cert-card {
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-md);
        padding: var(--space-5);
        text-align: center;
        transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
        position: relative;
    }

    .cert-wall .cert-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--jc-amber-500), var(--jc-amber-300));
        border-radius: var(--radius-md) var(--radius-md) 0 0;
    }

    .cert-wall .cert-card:hover {
        border-color: var(--jc-amber-500);
        background: linear-gradient(180deg, rgba(245, 124, 0, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
        transform: translateY(-3px);
    }

    .cert-wall .cert-title {
        font-size: var(--text-base);
        font-weight: 600;
        color: #FFFFFF;
        margin-bottom: var(--space-2);
        letter-spacing: 0.02em;
    }

    .cert-wall .cert-desc {
        font-size: var(--text-xs);
        color: var(--jc-blue-200);
        line-height: 1.6;
    }

    /* ===== Service Commitment (White BG) ===== */
    .service-section {
        background: #FFFFFF;
        padding: var(--space-9) 0;
    }

    .service-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-5);
    }

    .service-card {
        background: #FFFFFF;
        border: 1px solid var(--jc-gray-200);
        border-radius: var(--radius-md);
        padding: var(--space-6);
        display: flex;
        gap: var(--space-5);
        align-items: flex-start;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .service-card:hover {
        border-color: var(--jc-blue-300);
        box-shadow: 0 4px 16px rgba(10, 74, 143, 0.08);
    }

    .service-number {
        font-family: var(--font-mono);
        font-size: var(--text-5xl);
        font-weight: 700;
        color: var(--jc-amber-500);
        line-height: 1;
        flex-shrink: 0;
        opacity: 0.9;
    }

    .service-content {
        flex: 1;
    }

    .service-title {
        font-size: var(--text-xl);
        font-weight: 700;
        color: var(--jc-gray-900);
        margin-bottom: var(--space-2);
    }

    .service-desc {
        font-size: var(--text-base);
        color: var(--jc-gray-600);
        line-height: var(--leading-relaxed);
    }

    /* ===== CTA Banner (Deep Blue + Amber Button) ===== */
    .cta-banner {
        background: linear-gradient(135deg, var(--jc-blue-800) 0%, var(--jc-blue-900) 100%);
        padding: var(--space-8) 0;
        position: relative;
        overflow: hidden;
    }

    .cta-banner::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background:
            radial-gradient(ellipse at 10% 50%, rgba(245, 124, 0, 0.1) 0%, transparent 40%);
        pointer-events: none;
    }

    .cta-banner-inner {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: var(--space-6);
        flex-wrap: wrap;
    }

    .cta-banner-text {
        color: #FFFFFF;
    }

    .cta-banner-title {
        font-size: var(--text-3xl);
        font-weight: 700;
        margin-bottom: var(--space-2);
    }

    .cta-banner-desc {
        font-size: var(--text-base);
        color: var(--jc-blue-200);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .nav-main {
            display: none;
        }

        .header-phone {
            display: none;
        }

        .mobile-menu-btn {
            display: flex;
        }

        .page-hero-inner {
            grid-template-columns: 1fr;
        }

        .page-hero-image {
            order: -1;
            max-width: 500px;
            margin: 0 auto;
        }

        .profile-content {
            grid-template-columns: 1fr;
        }

        .profile-image-wrap {
            max-width: 500px;
            margin: 0 auto;
        }

        .business-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .cert-wall {
            grid-template-columns: repeat(2, 1fr);
        }

        .hero-stats-row {
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-6);
        }

        .timeline::before {
            left: 20px;
        }

        .timeline-item {
            grid-template-columns: 1fr;
            gap: 0;
        }

        .timeline-dot {
            left: 20px;
        }

        .timeline-content-left,
        .timeline-content-right {
            text-align: left;
            padding-left: calc(var(--space-7) + 20px);
            padding-right: 0;
        }

        .timeline-content-left {
            order: 2;
        }

        .timeline-content-right {
            order: 2;
        }

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

    @media (max-width: 768px) {
        .page-hero {
            padding-top: 100px;
        }

        .page-hero-title {
            font-size: var(--text-3xl);
        }

        .section-title {
            font-size: var(--text-2xl);
        }

        .cta-banner-inner {
            flex-direction: column;
            text-align: center;
            align-items: center;
        }

        .cta-banner-title {
            font-size: var(--text-2xl);
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: var(--space-6);
        }

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

        .hero-stat-number {
            font-size: var(--text-3xl);
        }
    }

    @media (max-width: 480px) {
        .business-grid {
            grid-template-columns: 1fr;
        }

        .cert-wall {
            grid-template-columns: 1fr;
        }

        .hero-stats-row {
            grid-template-columns: 1fr 1fr;
        }

        .hero-stat-number {
            font-size: var(--text-2xl);
        }

        .service-card {
            padding: var(--space-5);
            gap: var(--space-4);
        }

        .service-number {
            font-size: var(--text-4xl);
        }

        .timeline-year {
            font-size: var(--text-2xl);
        }
    }
    

    
    /* ===== Scroll Reveal Animations ===== */
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .js-enabled .reveal {
        opacity: 0;
        transform: translateY(28px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
        will-change: opacity, transform;
    }
    .js-enabled .reveal.in-view {
        opacity: 1;
        transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.06s; }
    .reveal-delay-2 { transition-delay: 0.12s; }
    .reveal-delay-3 { transition-delay: 0.18s; }
    .reveal-delay-4 { transition-delay: 0.24s; }
    .reveal-delay-5 { transition-delay: 0.30s; }
    .reveal-left {
        opacity: 1;
        transform: none;
    }
    .js-enabled .reveal-left {
        opacity: 0;
        transform: translateX(-40px);
        transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .js-enabled .reveal-left.in-view {
        opacity: 1;
        transform: translateX(0);
    }
    .reveal-right {
        opacity: 1;
        transform: none;
    }
    .js-enabled .reveal-right {
        opacity: 0;
        transform: translateX(40px);
        transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .js-enabled .reveal-right.in-view {
        opacity: 1;
        transform: translateX(0);
    }
    .reveal-scale {
        opacity: 1;
        transform: none;
    }
    .js-enabled .reveal-scale {
        opacity: 0;
        transform: scale(0.92);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .js-enabled .reveal-scale.in-view {
        opacity: 1;
        transform: scale(1);
    }
.page-hero-left { display: flex; flex-direction: column; gap: var(--space-4); min-width: 0; }