:root {
    --primary-red: #8B0012; /* Deep Chinese Red */
    --primary-gold: #C6A664; /* Champagne Gold */
    --text-dark: #2c3e50;
    --text-muted: #6c757d;
    --bg-light: #f4f6f8;
    --card-bg: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 15px 40px rgba(0,0,0,0.12);
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', sans-serif;
}

/* General Reset & Typography */
body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    background-color: var(--bg-light);
    padding-top: 0; /* Navbar is fixed but transparent initially or handled by hero */
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
}

/* Navbar Customization */
.navbar {
    transition: all 0.3s ease;
    padding: 1rem 0;
    backdrop-filter: blur(10px);
    background: rgba(139, 0, 18, 0.95); /* Semi-transparent red */
}

.navbar-brand {
    font-family: var(--font-serif);
    font-size: 1rem;
    letter-spacing: 1px;
}

.brand-logo {
    color: var(--primary-gold);
}

.nav-link {
    font-weight: 500;
    letter-spacing: 0.5px;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--primary-gold) !important;
}

/* Hero Section */
.hero-section {
    position: relative;
    /* background handled by carousel */
    height: 85vh;
    margin-bottom: 0;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.4) 0%, rgba(139,0,18,0.1) 100%);
}

.hero-content {
    z-index: 2;
}

.main-title {
    font-size: 3.5rem;
    text-shadow: 0 4px 10px rgba(0,0,0,0.3);
    letter-spacing: 2px;
}

.sub-title {
    font-size: 1.25rem;
    font-weight: 300;
    opacity: 0.9;
    letter-spacing: 5px;
}

.hero-btn {
    background-color: var(--primary-red);
    border: 1px solid var(--primary-red);
    font-family: var(--font-sans);
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.hero-btn:hover {
    background-color: transparent;
    border-color: #fff;
    transform: translateY(-2px);
}

/* Main Layout */
.main-container {
    margin-top: -60px; /* Overlap hero */
    position: relative;
    z-index: 10;
}

/* Service Cards */
.service-card {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: none;
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    overflow: hidden;
}

/* Decorative accent for cards */
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-red);
    opacity: 0;
    transition: opacity 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    opacity: 1;
}

.section-title {
    color: var(--primary-red);
    font-size: 2rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin-top: 1.5rem;
}

.feature-list li {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    color: var(--text-dark);
}

.feature-list li i {
    color: var(--primary-gold);
    margin-right: 10px;
}

/* Media Placeholders */
.media-placeholder {
    background-color: #f1f3f5;
    position: relative;
    transition: all 0.3s;
}

.video-placeholder {
    height: 300px;
    background: linear-gradient(45deg, #2c3e50, #4ca1af);
}

.img-placeholder {
    height: 200px;
    background: #e9ecef;
}

.bg-light-blue {
    background: linear-gradient(45deg, #4facfe, #00f2fe);
}

.hover-scale {
    transition: transform 0.3s;
    cursor: pointer;
}

.hover-scale:hover {
    transform: scale(1.1);
    opacity: 1 !important;
}

/* Service Items (Icons) */
.service-item-card {
    background: #fff;
    transition: all 0.3s;
    border: 1px solid #f1f1f1 !important;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-sm) !important;
    border-color: var(--primary-gold) !important;
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.bg-soft-primary { background-color: rgba(13, 110, 253, 0.1); }
.bg-soft-warning { background-color: rgba(255, 193, 7, 0.1); }

/* Business Scope Overview Extras */
.text-gold {
    color: var(--primary-gold) !important;
}

.overview-item {
    padding: 1rem;
    transition: transform 0.3s;
}

.overview-item:hover {
    transform: translateY(-5px);
}

.badge-icon {
    width: 40px;
    height: 40px;
    background: rgba(139, 0, 18, 0.05);
    color: var(--primary-red);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Footer */
footer {
    background: #1a1a1a;
    color: #bbb;
    padding-top: 4rem;
    padding-bottom: 2rem;
    margin-top: 5rem;
}

footer h4 {
    color: #fff;
    margin-bottom: 1.5rem;
}

footer a.btn-danger {
    background-color: var(--primary-red);
    border-color: var(--primary-red);
    font-weight: bold;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(139, 0, 18, 0.4);
}

footer a.btn-danger:hover {
    background-color: #a00015;
    box-shadow: 0 6px 20px rgba(139, 0, 18, 0.6);
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .main-title {
        font-size: 2.2rem;
        line-height: 1.3;
    }
    .sub-title {
        font-size: 0.9rem;
        letter-spacing: 2px;
    }
    .service-card {
        padding: 1.25rem;
        margin-left: -5px;
        margin-right: -5px;
    }
    .main-container {
        margin-top: -40px;
        padding-left: 15px;
        padding-right: 15px;
    }
    .video-placeholder {
        height: 180px;
    }
    .contact-item {
        background: rgba(255,255,255,0.05);
        padding: 15px;
        border-radius: 12px;
        margin-bottom: 10px;
    }
    .contact-item .btn {
        width: 100%;
        margin-top: 5px;
        font-size: 1rem;
    }
}

/* Contact Section Enhancements */
.contact-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    border-color: var(--primary-gold);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.avatar-circle {
    width: 60px;
    height: 60px;
    background: rgba(198, 166, 100, 0.2);
    color: var(--primary-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.contact-card:hover .avatar-circle {
    background: var(--primary-gold);
    color: #fff;
    transform: scale(1.1);
}

.btn-gold {
    background-color: var(--primary-gold);
    border: 1px solid var(--primary-gold);
    color: #fff;
    transition: all 0.3s;
}

.btn-gold:hover {
    background-color: #b59555;
    border-color: #b59555;
    color: #fff;
}

.contact-phone {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    letter-spacing: 1px;
}


/* Compact Contact Styles */
.contact-list-compact {
    max-width: 500px;
    margin: 0 auto;
}

.contact-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-item-row:hover {
    background: rgba(198, 166, 100, 0.1);
    border-color: rgba(198, 166, 100, 0.3);
}

.contact-item-row .name-label {
    color: var(--primary-gold);
    font-weight: 500;
    margin-bottom: 0;
    font-size: 0.95rem;
}

.contact-item-row .phone-link {
    color: #fff;
    text-decoration: none;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: color 0.3s;
}

.contact-item-row .phone-link:hover {
    color: var(--primary-gold);
}

.contact-item-row .phone-link i {
    margin-right: 8px;
    font-size: 0.85rem;
    opacity: 0.8;
}


/* Enforce carousel slide transition */
.carousel-item {
    transition: transform 0.6s ease-in-out !important;
}