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

:root {
    --primary-green: #10b981;
    --light-green: #d1fae5;
    --dark-green: #059669;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.main-nav {
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    position: relative;
}

.nav-menu > li {
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 5px;
}

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

/* Dropdown Menu Styles */
.nav-item-dropdown {
    position: relative;
}

.dropdown-trigger {
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 10px;
    transition: transform 0.3s;
}

.nav-item-dropdown:hover .dropdown-arrow,
.nav-item-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 0;
    padding-top: 10px;
    background: transparent;
    pointer-events: none;
    z-index: 1000;
}

.dropdown-menu::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: transparent;
}

.dropdown-menu .dropdown-content {
    position: relative;
    background: var(--bg-white);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    padding: 20px 0;
    min-width: 500px;
    display: flex;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: auto;
}

.nav-item-dropdown:hover .dropdown-menu .dropdown-content,
.nav-item-dropdown.active .dropdown-menu .dropdown-content {
    opacity: 1;
    transform: translateY(0);
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown.active .dropdown-menu {
    pointer-events: auto;
}

.dropdown-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-green);
    border-radius: 8px 8px 0 0;
}

.dropdown-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 10px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    text-decoration: none;
    color: var(--text-dark);
    transition: background-color 0.2s;
    border-bottom: 1px solid #e5e7eb;
    position: relative;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background-color: var(--bg-light);
    color: var(--primary-green);
}

.dropdown-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.dropdown-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.dropdown-text {
    font-size: 15px;
    font-weight: 400;
}

.btn-apply {
    background: var(--primary-green);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-apply:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--text-dark);
}

.hero-content .highlight {
    color: var(--primary-green);
}

.hero-description {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.btn-primary {
    background: var(--primary-green);
    color: white;
    padding: 16px 32px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    display: inline-block;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 20px;
    margin-top: 40px;
}

.stat-card {
    background: var(--light-green);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    flex: 1;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-gray);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
    border-radius: 20px;
    display: block;
}

.hero-illustration {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.hero-illustration::before {
    content: '👨‍💼';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 200px;
    opacity: 0.3;
}

/* Cooperation Solutions */
.cooperation-solutions {
    padding: 100px 0;
    background: var(--bg-white);
}

.section-title {
    text-align: center;
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 60px;
}

.cooperation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.cooperation-card {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

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

.card-number {
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-green);
    opacity: 0.3;
}

.card-illustration {
    width: 120px;
    height: 120px;
    margin: 20px auto;
    background: var(--light-green);
    border-radius: 12px;
    position: relative;
}

.illustration-1::before {
    content: '🏢';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 60px;
}

.illustration-2::before {
    content: '🔗';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 60px;
}

.illustration-3::before {
    content: '💻';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 60px;
}

.illustration-4::before {
    content: '🌍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 60px;
}

.cooperation-card h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.card-link {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s;
}

.card-link:hover {
    gap: 10px;
}

/* Success Cases */
.success-cases {
    padding: 100px 0;
    background: var(--bg-light);
    position: relative;
}

.testimonial-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: center;
}

.testimonial-card {
    background: var(--primary-green);
    color: white;
    padding: 50px;
    border-radius: 20px;
    position: relative;
}

.testimonial-content h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.testimonial-content p {
    font-size: 16px;
    line-height: 1.8;
    opacity: 0.95;
}

.testimonial-nav {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.nav-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.3s;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.3);
}

.testimonial-graphic {
    width: 200px;
    height: 200px;
    background: var(--light-green);
    border-radius: 50%;
    margin: 0 auto;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.testimonial-graphic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

/* Core Advantages */
.core-advantages {
    padding: 100px 0;
    background: var(--bg-white);
}

.advantages-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: start;
}

.advantage-btn {
    background: var(--light-green);
    padding: 20px 25px;
    border-radius: 12px;
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.advantage-btn:hover,
.advantage-btn.active {
    background: var(--primary-green);
    color: white;
    border-color: var(--primary-green);
}

.advantage-btn .arrow {
    font-size: 20px;
}

.section-title-left {
    font-size: 36px;
    font-weight: 700;
    margin-top: 40px;
    color: var(--text-dark);
}

.advantage-detail {
    margin-bottom: 40px;
}

.advantage-detail h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.advantage-detail p {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 25px;
    line-height: 1.8;
}

.advantage-illustration {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 16px;
    display: block;
}

.advantage-illustration::before {
    content: '📱';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 120px;
    opacity: 0.3;
}

/* Overseas Business */
.overseas-business {
    padding: 100px 0;
    background: var(--bg-light);
}

.overseas-business .section-title {
    margin-bottom: 50px;
}

.problems-solutions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.problems,
.solutions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.problem-card,
.solution-card {
    background: var(--light-green);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    color: var(--text-dark);
    transition: all 0.3s;
}

.problem-card:hover,
.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.business-illustration {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-radius: 20px;
    margin: 40px auto;
    position: relative;
}

.business-illustration::before {
    content: '📱';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 150px;
    opacity: 0.3;
}

.overseas-business .btn-primary {
    display: block;
    margin: 40px auto;
    text-align: center;
    max-width: 300px;
}

.business-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
}

.business-links a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.business-links a:hover {
    color: var(--dark-green);
}

/* Trust System */
.trust-system {
    padding: 100px 0;
    background: var(--bg-white);
}

.trust-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-top: 60px;
}

.trust-left {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.trust-illustration-1,
.trust-illustration-2 {
    width: 200px;
    height: 200px;
    background: var(--light-green);
    border-radius: 16px;
}

.trust-illustration-1::before {
    content: '🐋';
    position: absolute;
    font-size: 80px;
}

.trust-right {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.trust-globe {
    width: 100%;
    height: 200px;
    background: var(--light-green);
    border-radius: 16px;
    position: relative;
}

.trust-globe::before {
    content: '🌍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 100px;
    opacity: 0.3;
}

.trust-stores {
    display: flex;
    gap: 15px;
}

.store-image {
    flex: 1;
    height: 120px;
    background: var(--light-green);
    border-radius: 12px;
}

.trust-partners {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.partner-logo {
    padding: 10px 20px;
    background: var(--bg-light);
    border-radius: 8px;
    font-weight: 600;
    color: var(--text-gray);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 80px 0 30px;
}

.footer-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.footer-feature-card {
    background: rgba(255,255,255,0.05);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
}

.footer-feature-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-green);
}

.footer-feature-card p {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-form h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

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

.footer-form input,
.footer-form textarea {
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 16px;
    font-family: inherit;
}

.footer-form input::placeholder,
.footer-form textarea::placeholder {
    color: rgba(255,255,255,0.5);
}

.footer-form textarea {
    resize: vertical;
}

.footer-brand {
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.footer-logo .logo-text {
    color: white;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-top: 10px;
}

.social-media {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s;
}

.social-icon:hover {
    background: var(--primary-green);
    transform: translateY(-3px);
}

.footer-links {
    display: flex;
    gap: 40px;
}

.link-group h4 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--primary-green);
}

.link-group a {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.link-group a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

/* Dropdown Menu Responsive */
@media (max-width: 768px) {
    .dropdown-menu {
        min-width: 90vw;
        left: 0;
        transform: translateX(0);
        max-width: calc(100vw - 20px);
    }

    .dropdown-menu .dropdown-content {
        min-width: 100%;
        transform: translateY(-10px);
    }

    .nav-item-dropdown:hover .dropdown-menu .dropdown-content,
    .nav-item-dropdown.active .dropdown-menu .dropdown-content {
        transform: translateY(0);
    }

    .dropdown-column {
        padding: 0 5px;
    }

    .dropdown-item {
        padding: 10px 10px;
    }

    .dropdown-text {
        font-size: 14px;
    }
}

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

    .hero-stats {
        justify-content: center;
    }

    .cooperation-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .testimonial-wrapper {
        grid-template-columns: 1fr;
    }

    .advantages-content {
        grid-template-columns: 1fr;
    }

    .problems-solutions {
        grid-template-columns: 1fr;
    }

    .trust-content {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .section-title {
        font-size: 32px;
    }

    .hero-stats {
        flex-direction: column;
    }

    .problems,
    .solutions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 40px 0;
    }

    .cooperation-solutions,
    .success-cases,
    .core-advantages,
    .overseas-business,
    .trust-system {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .section-title {
        font-size: 28px;
    }
}