/* ===== Hero Section ===== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

#bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(14, 14, 16, 0.75) 0%, rgba(14, 14, 16, 0.5) 50%, rgba(14, 14, 16, 1) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Scroll indicator — hidden */
.scroll-indicator {
    display: none;
}

/* Gradient Hero (no video) — clean, no radial glow */
.hero-gradient {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--accent);
    opacity: 0.3;
}

/* ===== Services Section ===== */
.services-section {
    padding: 7rem 0;
    position: relative;
    z-index: 2;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
}

.service-card {
    padding: 2.5rem 2rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.service-card:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.icon-wrapper {
    position: relative;
    width: 56px;
    height: 56px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* icon-glow hidden */
.icon-glow {
    display: none;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.93rem;
    line-height: 1.65;
}

/* ===== Business Overview Cards (Home) ===== */
.business-overview {
    padding: 7rem 0;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.business-card {
    padding: 3rem 2rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-main);
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.business-card:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.business-card:hover::before {
    opacity: 0.6;
}

.business-icon {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.business-card h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-main);
    letter-spacing: -0.01em;
}

.business-card .desc {
    color: var(--text-muted);
    font-size: 0.93rem;
    margin-bottom: 1.5rem;
    line-height: 1.65;
}

.business-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-weight: 500;
    font-size: 0.9rem;
    margin-top: auto;
}

.business-card .card-link .arrow {
    transition: transform 0.25s ease;
}

.business-card:hover .card-link .arrow {
    transform: translateX(4px);
}

/* ===== Pricing Section ===== */
.pricing-section {
    padding: 7rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 4rem;
}

.pricing-card {
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.pricing-icon {
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-main);
}

.pricing-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 2rem;
    line-height: 1.65;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.pricing-features li {
    font-size: 0.88rem;
    color: var(--text-main);
    margin-bottom: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.pricing-features li::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* ===== Project Section (VR) ===== */
.project-section {
    padding: 7rem 0;
    position: relative;
    overflow: hidden;
}

.project-bg {
    display: none;
}

.project-section .container {
    position: relative;
    z-index: 1;
}

.project-header {
    text-align: left;
    margin-bottom: 0;
}

.project-top-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

/* 《绝处逢生》特性网格结束后，为《导火索》建立独立的内容起点。 */
.project-section .features-grid + .project-block {
    position: relative;
    margin-top: clamp(5rem, 9vw, 9rem);
    padding-top: clamp(5rem, 8vw, 8rem);
    border-top: 1px solid var(--border);
}

.project-section .features-grid + .project-block::before {
    content: 'PVP PROJECT';
    position: absolute;
    top: -0.72rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0 1rem;
    color: var(--accent);
    background: var(--bg);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    white-space: nowrap;
}

.project-block + .project-block {
    margin-top: 6rem;
    padding-top: 6rem;
    border-top: 1px solid var(--border);
}

.project-video-wrapper {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

.project-main-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-item {
    padding: 2rem;
    transition: var(--transition);
}

.feature-item:hover {
    background: var(--surface-hover);
    transform: translateY(-2px);
}

.feature-icon {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.feature-item h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.feature-item p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
}

.feature-highlight {
    grid-column: 1 / -1;
    background: var(--accent-soft);
    border: 1px solid rgba(196, 160, 106, 0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 3rem 2rem;
}

.feature-highlight .highlight-icon {
    margin-bottom: 1.5rem;
    color: var(--accent);
}

.feature-highlight p {
    max-width: 700px;
    font-size: 1.05rem;
    color: var(--text-main);
}

.feature-highlight strong {
    color: var(--accent);
    font-weight: 600;
}

/* ===== Ecosystem / U-Maker Section ===== */
.ecosystem-section {
    padding: 7rem 0;
}

.ecosystem-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.eco-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.eco-list {
    list-style: none;
    margin-bottom: 3rem;
}

.eco-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
    font-size: 1rem;
    color: var(--text-main);
}

.check {
    color: var(--accent);
    font-weight: 600;
}

.other-software {
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.other-software h4 {
    margin-bottom: 1rem;
    color: var(--text-dim);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
}

.software-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.software-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.software-link:hover {
    border-color: var(--border-hover);
    color: var(--accent);
}

/* ===== Media / Carousel ===== */
.media-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

.carousel-container {
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius);
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
    border: 1px solid var(--border);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    height: 100%;
}

.carousel-slide {
    flex: 0 0 100%;
    min-width: 100%;
    height: 100%;
    padding: 0.75rem;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}

.umaker-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 6px;
    display: block;
}

.slide-partner {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    padding: 0 !important;
}

.partner-logo {
    height: 85%;
    width: 90%;
    object-fit: contain;
    transition: var(--transition);
}

.partner-logo:hover {
    transform: scale(1.03);
}

.carousel-dots {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    z-index: 10;
    padding: 0.4rem 0.8rem;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 50px;
}

.dot {
    width: 7px;
    height: 7px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent);
    width: 18px;
    border-radius: 4px;
}

.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: 1px solid var(--border);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    font-size: 1rem;
}

.carousel-nav:hover {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

.carousel-nav.prev {
    left: 0.75rem;
}

.carousel-nav.next {
    right: 0.75rem;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 5rem 0 7rem;
}

.contact-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 3.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-top: 2px solid var(--accent);
    border-radius: var(--radius);
}

.contact-text {
    max-width: 500px;
}

.contact-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 1.2rem;
    line-height: 1.65;
}

.highlight-text {
    font-weight: 600;
    color: var(--text-main) !important;
}

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

.qr-container {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto 1rem;
    padding: 8px;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
}

.qr-code {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* scan line hidden */
.qr-scan-line {
    display: none;
}

.qr-hint {
    color: var(--accent);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.contact-email-link {
    margin-top: 0.8rem;
    color: var(--accent);
    font-weight: 500;
    font-size: 0.9rem;
}

.contact-email-link a {
    color: inherit;
    text-decoration: none;
}

/* ===== AI Page: Case Studies ===== */
.case-section {
    padding: 7rem 0;
}

.case-header {
    text-align: center;
    margin-bottom: 4rem;
}

.case-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}

.case-item.reverse {
    direction: rtl;
}

.case-item.reverse .case-info {
    direction: ltr;
}

.case-image {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.case-screenshot {
    width: 100%;
    height: auto;
    display: block;
}

.case-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 70%, rgba(14, 14, 16, 0.4) 100%);
    pointer-events: none;
}

.case-info {
    padding: 1rem 0;
}

.case-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.case-tag {
    padding: 0.25rem 0.7rem;
    background: var(--accent-soft);
    border: 1px solid rgba(196, 160, 106, 0.12);
    border-radius: 4px;
    font-size: 0.78rem;
    color: var(--accent);
    font-weight: 500;
}

.case-info h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.case-info .case-desc {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.65;
}

.case-features {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.case-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.6rem;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.5;
}

.case-features li::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    margin-top: 0.55em;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.case-link:hover {
    gap: 0.75rem;
}

/* ===== 3D Page: Service Detail Cards ===== */
.td-service-section {
    padding: 3rem 0 7rem;
}

.td-service-card {
    padding: 3.5rem 2.5rem;
    margin-bottom: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.td-service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.td-service-card:hover::before {
    opacity: 0.5;
}

.td-service-card:hover {
    border-color: var(--border-hover);
}

.td-service-card .td-icon {
    margin-bottom: 1.2rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.td-service-card h3 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    letter-spacing: -0.02em;
}

.td-service-card .td-desc {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 1.5rem;
}

.td-points {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
}

.td-points li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.td-points li::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* ===== About Page ===== */
.about-section {
    padding: 7rem 0;
}

.about-mission {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 4rem;
}

.about-mission p {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.about-mission .highlight {
    color: var(--accent);
    font-weight: 600;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 4rem;
}

.capability-card {
    padding: 2.5rem 1.8rem;
    text-align: center;
    transition: var(--transition);
}

.capability-card:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.capability-icon {
    margin-bottom: 1rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.capability-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.capability-card p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

.product-matrix {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.product-card {
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-main);
}

.product-card:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.product-card .product-icon {
    margin-bottom: 0.8rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card h5 {
    font-size: 1rem;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.product-card .product-desc {
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 3rem 0 7rem;
    text-align: center;
}

.cta-box {
    padding: 3.5rem;
    max-width: 680px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    letter-spacing: -0.02em;
}

.cta-box p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 2rem;
    line-height: 1.65;
}

/* ===== Page Separator ===== */
.page-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0;
}

/* ===== Responsive: Page-specific ===== */
@media (max-width: 992px) {
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .case-item,
    .case-item.reverse {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .case-item.reverse {
        direction: ltr;
    }
    .td-points {
        grid-template-columns: 1fr;
    }
    .capability-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .business-grid {
        grid-template-columns: 1fr;
    }
    .project-top-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 2.5rem;
    }
    .project-video-wrapper {
        aspect-ratio: 16 / 10;
    }
    .project-section .features-grid + .project-block {
        margin-top: 4rem;
        padding-top: 4rem;
    }
    .case-info h3 {
        font-size: 1.4rem;
    }
    .td-service-card {
        padding: 2.5rem 1.5rem;
    }
    .capability-grid {
        grid-template-columns: 1fr;
    }
    .product-matrix {
        grid-template-columns: repeat(2, 1fr);
    }
    .cta-box {
        padding: 2.5rem 1.5rem;
    }
    .contact-box {
        padding: 2rem;
    }
    .carousel-nav {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }
}