:root {
    --primary-color: #C62828;
    /* Red Stag Deep Red */
    --secondary-color: #1A1A1A;
    /* Stark Black */
    --text-color: #333333;
    --bg-light: #F9F9F9;
    --white: #ffffff;
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Inter', sans-serif;
    /* Could use 'Oswald' if imported */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    /* Bolder headers */
    color: var(--secondary-color);
    text-transform: uppercase;
    /* Red Stag style */
    letter-spacing: -0.5px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-bottom: 4px solid var(--primary-color);
    /* Red accent line */
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px;
}

.logo {
    display: flex;
    align-items: center;
    height: 100%;
    /* Ensure it fits in nav-container */
}

.logo img {
    height: 60px;
    /* Adjust based on navbar height (90px) */
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.lang-switch {
    display: flex;
    gap: 0.5rem;
    margin-left: 2rem;
    /* Separate from links on desktop */
}

.lang-btn {
    background: none;
    border: 1px solid #ccc;
    color: var(--secondary-color);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s;
}

.lang-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* Hero */
.hero {
    height: 85vh;
    background: linear-gradient(rgba(26, 26, 26, 0.7), rgba(26, 26, 26, 0.7)), url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--white);
    text-transform: none;
    /* Keep hero readable */
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    max-width: 1000px;
    /* Increased from 800px to fit Chinese text */
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    border-radius: 4px;
    /* Sharper corners */
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--white);
    /* For hero */
}

/* Sections */
.section {
    padding: 6rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: var(--secondary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 6px;
    background-color: var(--primary-color);
    margin: 1.5rem auto 0;
}

/* Guarantees Grid (Red Stag Style) */
.guarantees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 0;
    /* Connected grid */
    border: 1px solid #e0e0e0;
}

.guarantee-card {
    background: var(--white);
    padding: 3rem 2rem;
    border: 1px solid #e0e0e0;
    text-align: center;
    transition: all 0.3s;
}

.guarantee-card:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: scale(1.02);
    z-index: 10;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.guarantee-card:hover h3,
.guarantee-card:hover p {
    color: var(--white);
}

.guarantee-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.guarantee-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Metrics Strip */
.metrics-section {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 4rem 0;
}

.metrics-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
    text-align: center;
}

.metric-item h3 {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.metric-item p {
    font-size: 1.1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Case Studies */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--white);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.case-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-bottom: 1px solid #e0e0e0;
}

.case-content {
    padding: 2.5rem;
}

.case-content h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.8rem;
}

.case-subtitle {
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    text-align: left;
}

.contact-group {
    margin-bottom: 2.5rem;
}

.contact-group h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #eee;
    padding-bottom: 0.5rem;
    display: inline-block;
}

.contact-subgroup {
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.contact-info a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.contact-info a:hover {
    color: var(--primary-color);
}

.address {
    color: #666;
    font-size: 0.95rem !important;
    line-height: 1.5;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: var(--white);
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border-top: 6px solid var(--primary-color);
}

.contact-form input,
.contact-form textarea {
    padding: 1.2rem;
    border: 2px solid #eee;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
    width: 100%;
    /* Ensure full width */
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.contact-form button {
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
    border-top: 10px solid var(--primary-color);
}

/* Mobile */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .lang-switch {
        margin-left: auto;
        /* Push to right on mobile */
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* Services List Layout (Added for clean text look) */
.services-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    /* Large gap between items */
    max-width: 1000px;
    /* Limit width for readability */
    margin: 0 auto;
}

.service-card {
    background: transparent;
    /* Remove card background */
    border: none;
    /* Remove border */
    padding: 0;
    /* Remove padding */
    box-shadow: none;
    /* Remove shadow */
    text-align: left;
    /* Align text left */
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--secondary-color);
}

.service-card p {
    font-size: 1.1rem;
    line-height: 2;
    /* Increased line height significantly */
    color: #444;
}

/* Remove hover effects for this clean list style */
.service-card:hover {
    transform: none;
    box-shadow: none;
}