/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Logo-inspired color palette */
    --primary-dark: #0a1628;
    --primary-blue: #1a4d7c;
    --secondary-blue: #2b6cb0;
    --accent-blue: #4299e1;
    --accent-light: #90cdf4;
    --text-dark: #1a202c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-white: #ffffff;
    --bg-gray: #f7fafc;
    --bg-light-blue: #e3f2fd;
    --border-color: #e2e8f0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
                 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-en {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-divider {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 400;
}

.logo-zn {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s, transform 0.2s;
    white-space: nowrap;
    padding: 6px 12px;
    border-radius: 4px;
}

.nav-link:hover {
    color: var(--primary-blue);
    background: var(--bg-light-blue);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, #0a1628 0%, #1a2d4a 50%, #1a4d7c 100%);
    z-index: 0;
}

.hero-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(66, 153, 225, 0.15) 0%, transparent 60%);
    z-index: 1;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    opacity: 0.3;
}

.hero-particles::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(66, 153, 225, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 80% 20%, rgba(66, 153, 225, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 40% 70%, rgba(66, 153, 225, 0.08) 1px, transparent 1px),
        radial-gradient(circle at 70% 80%, rgba(66, 153, 225, 0.1) 1px, transparent 1px);
    background-size: 200px 200px, 250px 250px, 180px 180px, 220px 220px;
    background-position: 0 0, 100px 50px, 50px 150px, 150px 100px;
}

.hero-content {
    text-align: center;
    z-index: 2;
    padding: 40px 20px;
    max-width: 900px;
}

.hero-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 40px;
    animation: fadeInScale 1s ease-out;
}

.hero-logo svg {
    width: 100%;
    height: 100%;
}

.hero-text-group {
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease-out both;
}

.hero-title-en {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: 4px;
    background: linear-gradient(135deg, #ffffff 0%, #e3f2fd 50%, #90cdf4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-zn {
    font-size: 1.6rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 2px;
}

.hero-divider {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
    margin: 0 auto 30px;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-description {
    margin-bottom: 35px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-desc-en {
    font-size: 1.2rem;
    color: var(--accent-blue);
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.hero-desc-zn {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 400;
}

.hero-slogan-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 16px 32px;
    margin-bottom: 40px;
    background: rgba(66, 153, 225, 0.08);
    border: 1px solid rgba(66, 153, 225, 0.3);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.slogan-en {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-blue);
    letter-spacing: 1px;
}

.slogan-divider {
    color: rgba(255, 255, 255, 0.3);
    font-size: 1rem;
}

.slogan-zn {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.cta-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--accent-blue), var(--secondary-blue));
    color: white;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(66, 153, 225, 0.35);
}

.cta-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(66, 153, 225, 0.45);
}

.cta-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.cta-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
    color: white;
}

.cta-divider {
    opacity: 0.5;
    font-size: 0.85rem;
}

/* Section Styles */
.section {
    padding: 100px 0;
}

.about-section {
    background: var(--bg-white);
}

.business-section {
    background: linear-gradient(180deg, var(--bg-gray) 0%, var(--bg-white) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title-zn {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.section-title-en {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--primary-blue);
    letter-spacing: 1px;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
    margin: 0 auto;
}

/* About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro,
.about-mission,
.about-advantages {
    margin-bottom: 50px;
}

.block-title-zn {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.block-title-en {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 18px;
    color: var(--primary-blue);
    letter-spacing: 0.5px;
}

.block-text-zn,
.block-text-en {
    margin-bottom: 10px;
    color: var(--text-medium);
    line-height: 1.8;
}

.block-text-en {
    font-style: italic;
    color: var(--text-light);
    font-size: 0.95rem;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.advantage-item {
    padding: 25px 20px;
    background: var(--bg-gray);
    border-radius: 8px;
    border-left: 4px solid var(--primary-blue);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border-left-color: var(--accent-blue);
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.advantage-text-zn,
.advantage-text-en {
    display: block;
}

.advantage-text-zn {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
}

.advantage-text-en {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 4px;
}

/* Business Section */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.business-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 35px rgba(26, 77, 124, 0.15);
    border-color: var(--accent-light);
}

.card-icon-wrapper {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon {
    width: 32px;
    height: 32px;
    color: white;
}

.card-title-zn {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.card-title-en {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 18px;
    color: var(--primary-blue);
    letter-spacing: 0.5px;
}

.card-text-zn,
.card-text-en {
    margin-bottom: 10px;
    color: var(--text-medium);
    line-height: 1.8;
}

.card-text-en {
    font-style: italic;
    font-size: 0.92rem;
    color: var(--text-light);
}

.card-list-zn,
.card-list-en {
    list-style: none;
    margin-bottom: 10px;
}

.card-list-zn li,
.card-list-en li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-medium);
    line-height: 1.6;
}

.card-list-zn li::before,
.card-list-en li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: 700;
}

.card-list-en {
    font-style: italic;
    font-size: 0.92rem;
}

.card-list-en li {
    color: var(--text-light);
}

.stat-highlight {
    display: inline-block;
    margin-bottom: 15px;
    padding: 8px 16px;
    background: var(--bg-light-blue);
    border-radius: 6px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-unit {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-left: 5px;
}

/* Contact Section */
.contact-section {
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-gray) 100%);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-white);
    padding: 50px;
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.contact-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.contact-title-zn {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.contact-title-en {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.contact-desc-zn,
.contact-desc-en {
    margin-bottom: 5px;
    color: var(--text-medium);
}

.contact-desc-en {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--text-light);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    padding: 25px;
    background: var(--bg-gray);
    border-radius: 10px;
    border-left: 4px solid var(--primary-blue);
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: var(--bg-light-blue);
    border-left-color: var(--accent-blue);
    transform: translateX(5px);
}

.contact-icon-wrapper {
    width: 50px;
    height: 50px;
    margin-right: 20px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon {
    width: 26px;
    height: 26px;
    color: white;
}

.contact-details {
    flex: 1;
}

.contact-label-zn,
.contact-label-en {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 5px;
}

.contact-label-en {
    font-style: italic;
}

.contact-value,
.contact-value-zn,
.contact-value-en {
    font-size: 1.05rem;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 3px;
}

.contact-value-en {
    font-size: 0.95rem;
    font-weight: 500;
    font-style: italic;
    color: var(--text-medium);
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 40px;
    align-items: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-logo {
    width: 50px;
    height: 50px;
}

.footer-logo svg {
    width: 100%;
    height: 100%;
}

.footer-name {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-name-en {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--accent-blue);
}

.footer-name-zn {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
    white-space: nowrap;
}

.footer-link:hover {
    color: var(--accent-blue);
}

.footer-copyright {
    text-align: right;
}

.copyright-zn,
.copyright-en {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.copyright-en {
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 968px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .footer-links {
        justify-content: center;
    }

    .footer-copyright {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }

    .nav-links {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-link {
        font-size: 0.8rem;
        padding: 5px 10px;
    }

    .hero {
        padding-top: 120px;
    }

    .hero-title-en {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }

    .hero-title-zn {
        font-size: 1.2rem;
    }

    .hero-desc-en {
        font-size: 1rem;
    }

    .hero-desc-zn {
        font-size: 0.9rem;
    }

    .hero-slogan-box {
        padding: 12px 24px;
        gap: 10px;
    }

    .slogan-en {
        font-size: 0.95rem;
    }

    .slogan-zn {
        font-size: 0.85rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }

    .cta-btn-primary,
    .cta-btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .hero-logo {
        width: 80px;
        height: 80px;
    }

    .section-title-zn {
        font-size: 1.6rem;
    }

    .section-title-en {
        font-size: 0.95rem;
    }

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

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

    .contact-card {
        padding: 30px 25px;
    }

    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .contact-icon-wrapper {
        margin-right: 0;
        margin-bottom: 15px;
    }
}

/* Animations */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll animations */
.business-card:nth-child(1) {
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.business-card:nth-child(2) {
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.business-card:nth-child(3) {
    animation: fadeInUp 0.6s ease-out 0.3s both;
}