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

:root {
    --primary-color: #0078ff;
    --primary-dark: #0055cc;
    --secondary-color: #00d4aa;
    --dark-bg: #0a0a14;
    --dark-bg-secondary: #12121f;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --gradient-primary: linear-gradient(135deg, #0078ff 0%, #00d4aa 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a14 0%, #1a1a2e 100%);
}

body {
    font-family: 'Poppins', 'Microsoft YaHei', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

.page-header {
    padding: 160px 40px 100px;
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--dark-bg-secondary) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 120, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 120, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.page-header-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
}

.page-label {
    font-size: 14px;
    color: var(--primary-color);
    letter-spacing: 4px;
    font-weight: 500;
    margin-bottom: 15px;
    display: block;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
}

.page-desc {
    font-size: 16px;
    color: var(--text-secondary);
}

.section {
    padding: 100px 40px;
    position: relative;
}

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

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 30px auto 0;
    border-radius: 2px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 20, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.header.scrolled {
    background: rgba(10, 10, 20, 0.98);
    box-shadow: 0 4px 30px rgba(0, 120, 255, 0.1);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    height: 80px;
    width: 100%;
    box-sizing: border-box;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.2) 50%, transparent 60%);
    animation: logoShine 3s ease-in-out infinite;
}

@keyframes logoShine {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.logo-en {
    font-size: 10px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    font-weight: 400;
}

.nav {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-item {
    position: relative;
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border-radius: 8px;
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
    color: var(--text-primary);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.nav-item-en {
    display: block;
    font-size: 9px;
    opacity: 0.6;
    margin-top: 2px;
    letter-spacing: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 14px;
}

.header-phone i {
    color: var(--primary-color);
    font-size: 16px;
}

.header-cta {
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 120, 255, 0.3);
}

.header-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 120, 255, 0.5);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

.nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 20, 0.98);
    padding: 20px;
    gap: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.nav.mobile-open .nav-item {
    padding: 12px 15px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
}

.btn-primary {
    padding: 16px 36px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 120, 255, 0.5);
}

.btn-secondary {
    padding: 16px 36px;
    background: transparent;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    border: 2px solid rgba(255,255,255,0.2);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    background: rgba(0, 120, 255, 0.1);
}

.footer {
    background: linear-gradient(180deg, #0a0a14 0%, #05050a 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 100px;
    overflow: hidden;
    box-sizing: border-box;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    box-sizing: border-box;
    width: 100%;
}

.footer-main {
    padding: 80px 0 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.footer-brand {
    grid-column: span 1;
    min-width: 0;
    word-wrap: break-word;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.footer-logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.footer-logo-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.footer-logo-en {
    font-size: 9px;
    color: var(--text-secondary);
    letter-spacing: 3px;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 25px;
    word-wrap: break-word;
    max-width: 100%;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 16px;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-3px);
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 25px;
    letter-spacing: 1px;
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: 12px;
}

.footer-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-list a:hover {
    color: var(--primary-color);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
    color: var(--text-secondary);
    font-size: 14px;
}

.contact-item i {
    color: var(--primary-color);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.copyright {
    color: var(--text-secondary);
    font-size: 13px;
}

.footer-legal {
    display: flex;
    gap: 20px;
    align-items: center;
}

.footer-legal a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: var(--primary-color);
}

.footer-legal span {
    color: rgba(255, 255, 255, 0.2);
}

.footer-credentials {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.credential-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s ease;
}

.credential-link:hover {
    color: var(--primary-color);
}

@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 1024px) {
    .header-container {
        padding: 0 20px;
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .header-phone {
        display: none;
    }

    .page-container {
        padding: 0 20px;
    }

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

    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .header {
        height: auto;
        min-height: 60px;
    }

    .header-container {
        height: 60px;
        padding: 0 15px;
    }

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

    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
        flex-shrink: 0;
    }

    .logo-text {
        display: flex;
        flex-direction: column;
    }

    .logo-name {
        font-size: 16px;
        font-weight: 600;
        white-space: nowrap;
    }

    .logo-en {
        font-size: 10px;
        opacity: 0.6;
        white-space: nowrap;
    }

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

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        flex-shrink: 0;
        background: rgba(255, 255, 255, 0.1);
        border: none;
        border-radius: 8px;
        color: var(--text-primary);
        font-size: 20px;
        cursor: pointer;
    }

    .header-cta {
        display: none;
    }

    .page-header {
        padding: 140px 20px 80px;
    }

    .section {
        padding: 60px 20px;
    }

    .footer-container {
        padding: 0 20px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .footer-credentials {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}