:root {
    --primary-color: #D97706;
    --secondary-color: #1F2937;
    --accent-color: #F59E0B;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --bg-light: #F9FAFB;
    --bg-dark: #111827;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
}

.font-serif {
    font-family: 'Noto Serif SC', serif;
}

.hero-bg {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.8), rgba(31, 41, 55, 0.6)),
    url('https://cyhh-1257685872.cos.ap-shanghai.myqcloud.com/jiuge/hero-bg.jpg') center/cover;
    min-height: 100vh;
    position: relative;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-hover {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.brand-logo {
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.brand-logo:hover {
    filter: grayscale(0%);
}

.process-step {
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -20px;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
    transform: translateY(-50%);
}

.process-step:last-child::after {
    display: none;
}

.floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}


.stats-counter {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .hero-bg {
        min-height: 80vh;
    }

    .stats-counter {
        font-size: 2rem;
    }

    .process-step::after {
        display: none;
    }
}


.form-input {
    transition: all 0.3s ease;
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.1);
}

.contact-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
}

.step-indicator {
    position: relative;
}

.step-indicator::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -50%;
    width: 100%;
    height: 2px;
    background: #E5E7EB;
    transform: translateY(-50%);
}

.step-indicator.active::after {
    background: var(--primary-color);
}

.step-indicator:last-child::after {
    display: none;
}

.success-message {
    display: none;
}

.success-message.show {
    display: block;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.contact-bg {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(31, 41, 55, 0.8)),
    url('https://cyhh-1257685872.cos.ap-shanghai.myqcloud.com/jiuge/contact-bg.jpg') center/cover;
    min-height: 60vh;
}

.service-bg1 {
    background: url('https://cyhh-1257685872.cos.ap-shanghai.myqcloud.com/jiuge/services/bg1.png') center/cover;
}


 /*cases*/
.case-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}


.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.filter-btn {
    transition: all 0.3s ease;
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
}

.case-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow-y: auto;
}

.case-modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    max-width: 4xl;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.stats-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .stats-number {
        font-size: 1.8rem;
    }
}

/*about*/

.team-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.timeline-item {
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 4px var(--primary-color);
}

.timeline-line {
    position: absolute;
    left: 0;
    top: 20px;
    bottom: -20px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
}

.partner-logo {
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.partner-logo:hover {
    filter: grayscale(0%);
}

.stats-counter {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .stats-counter {
        font-size: 2rem;
    }
}

/*.div-bg1{*/
/*    background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(31, 41, 55, 0.8)),*/
/*    url('../images/services/bg1.png') center/cover;*/
/*}*/
/*.partner-brands{*/
/*    background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(31, 41, 55, 0.8)),*/
/*    url('../images/brands.png') center/cover;*/
/*    min-height: 60vh;*/
/*}*/