:root {
    --primary-color: #1a5fb4;
    --secondary-color: #2b2b2b;
    --accent-color: #e95420;
    --light-bg: #f5f5f5;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
}

body {
    background-color: var(--light-bg);
    color: var(--secondary-color);
    line-height: 1.6;
}
.full_bg{
    display: none;
}

.container {
    margin: 0 auto;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: 40px;
    margin-right: 10px;
    animation: fadeInLeft 0.8s ease;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
    animation: fadeInRight 0.8s ease;
}

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

.nav-links li {
    margin-left: 30px;
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

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

.active {
    color: var(--primary-color) !important;
    font-weight: 600 !important;
}

.active::after {
    width: 100% !important;
}

/* 页眉横幅 */
.banner {
    background: linear-gradient(135deg, var(--primary-color), #3a7bd5);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80')  no-repeat center center/cover;
    opacity: 0.2;
    z-index: 1;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.banner h2 {
    font-size: 2.5rem;color: #fffbd3;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease, float 6s ease-in-out infinite;
}

.banner p {
    font-size: 15px;
    margin-bottom: 30px;
    animation: fadeIn 1.5s ease;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white) !important;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--accent-color);
    animation: pulse 2s infinite, bounce 2s ease infinite;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    background-color: transparent;
    color: var(--accent-color);
    animation: none;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(233, 84, 32, 0.3);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--white);
    color: var(--white);
    margin-left: 15px;
}

.btn-outline:hover {
    background-color: #03A9F4;
    color: var(--primary-color);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.3);
}

/* 主要内容 */
.section {
    padding: 60px 0;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.section.visible  {
    opacity: 1;
    transform: translateY(0);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--accent-color);
}

.section-title p {
    color: #666;
    max-width: 700px;
    margin: 15px auto 0;
}

.why-website {
    background-color: var(--white);
}

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-top: 40px;
}

.feature-card {
    flex-basis: calc(33.333% - 30px);
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 30px;
    transition: transform 0.5s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.5s ease;
}

.feature-card.visible  {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:nth-child(1) { transition-delay: 0.1s; }
.feature-card:nth-child(2) { transition-delay: 0.2s; }
.feature-card:nth-child(3) { transition-delay: 0.3s; }
.feature-card:nth-child(4) { transition-delay: 0.4s; }
.feature-card:nth-child(5) { transition-delay: 0.5s; }
.feature-card:nth-child(6) { transition-delay: 0.6s; }

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(26, 95, 180, 0.1), rgba(233, 84, 32, 0.1));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.2);
    color: var(--accent-color);
}

.feature-card h3 {
    font-size: 15px;font-weight: bold;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.service-types {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-top: 40px;
}

.service-card {
    flex-basis: calc(50% - 20px);
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 40px;
    transition: transform 0.3s ease;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.5s ease;
}

.service-card.visible  {
    opacity: 1;
    transform: scale(1);
}

.service-card:nth-child(1) { transition-delay: 0.1s; }
.service-card:nth-child(2) { transition-delay: 0.3s; }
.service-card:nth-child(3) { transition-delay: 0.5s; }
.service-card:nth-child(4) { transition-delay: 0.7s; }

.service-card:hover {
    transform: translateY(-10px) scale(1.02);
}

.service-img {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.service-img::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.3));
    z-index: 1;
}

.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-card:hover .service-img img {
    transform: scale(1.1);
}

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.service-card:hover .service-content h3 {
    color: var(--accent-color);
}

.service-content ul {
    list-style-position: inside;
    margin: 20px 0;
}

.service-content li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
    transition: transform 0.3s ease;
}

.service-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.service-card:hover .service-content li {
    transform: translateX(5px);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color), #3a7bd5);
    color: var(--white);
    text-align: center;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1557804506-669a67965ba0?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80')  no-repeat center center/cover;
    opacity: 0.1;
    z-index: 1;
}

.cta-section .container {
    position: relative;
    z-index: 2;
}

.cta-section h2 {
    font-size: 2rem;color: #ffc2af;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.cta-section p {
    max-width: 700px;
    margin: 0 auto 30px;
    font-size: 14px;
    animation: fadeInUp 1.2s ease;
}

/* 漂浮粒子背景特效 */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 15s infinite linear;
}

/* 高级动画 */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(233, 84, 32, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(233, 84, 32, 0); }
    100% { box-shadow: 0 0 0 0 rgba(233, 84, 32, 0); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) translateX(10px) rotate(5deg);
    }
    50% {
        transform: translateY(0) translateX(20px) rotate(0deg);
    }
    75% {
        transform: translateY(20px) translateX(10px) rotate(-5deg);
    }
}

@keyframes wave {
    0% { transform: rotate(0deg); }
    10% { transform: rotate(14deg); }
    20% { transform: rotate(-8deg); }
    30% { transform: rotate(14deg); }
    40% { transform: rotate(-4deg); }
    50% { transform: rotate(10deg); }
    60% { transform: rotate(0deg); }
    100% { transform: rotate(0deg); }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .feature-card, .footer-column {
        flex-basis: calc(50% - 20px);
    }
    
    .service-card {
        flex-basis: 100%;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .banner h2 {
        font-size: 2rem;
    }
    
    .feature-card, .footer-column {
        flex-basis: 100%;
    }
}

.our-advantages {
    background: linear-gradient(135deg, #f8fafc, #e6f0f9);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.8s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    background: rgba(26, 95, 180, 0.1);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
    background: var(--primary-color);
    color: var(--white);
    transform: rotateY(180deg);
}

.advantage-content h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.advantage-content p {
    color: #666;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .advantages-grid {
        grid-template-columns: 1fr;
    }
}