/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
    background: #f7faff;
    color: #222c36;
    min-height: 100vh;
    position: relative;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* 导航栏 */
.navbar {
    background: #1976d2;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
    color: #fff;
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}
.site-title {
    font-size: 1.8rem;
    font-weight: bold;
    letter-spacing: 2px;
    color: #fff;
    text-shadow: 0 2px 8px #1976d299;
}
.nav-links a {
    color: #e3f2fd;
    text-decoration: none;
    margin-left: 2rem;
    font-size: 1rem;
    transition: color 0.2s;
    text-shadow: none;
}
.nav-links a:hover {
    color: #1976d2;
    background: #e3f2fd;
    border-radius: 6px;
    padding: 0.2rem 0.6rem;
    text-shadow: none;
}

/* 主横幅 */
.hero {
    background: linear-gradient(120deg, #1976d2 0%, #63a4ff 100%);
    padding: 4rem 0 3rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    color: #fff;
}
.hero-content h1 {
    font-size: 2.8rem;
    font-weight: bold;
    color: #fff;
    margin-bottom: 1rem;
    text-shadow: 0 2px 8px #1976d299, 0 1px 2px #0008;
}
.hero-content p {
    font-size: 1.3rem;
    color: #fff;
    margin-bottom: 2rem;
    text-shadow: none;
}
.hero-actions .btn-primary {
    background: #fff;
    color: #1976d2;
    padding: 0.8rem 2.2rem;
    border: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 12px #1976d288;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
    text-shadow: none;
}
.hero-actions .btn-primary:hover {
    background: #1976d2;
    color: #fff;
    text-shadow: 0 2px 8px #1976d299;
}

/* 板块通用样式 */
.section {
    padding: 3rem 0 2rem 0;
}
.section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #1976d2;
    text-align: center;
    letter-spacing: 1px;
    text-shadow: 0 2px 8px #1976d288;
    font-weight: bold;
}

/* 卡片布局 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}
.card {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 4px 24px #1976d211, 0 1.5px 8px #1976d211;
    padding: 2rem 1.2rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1.5px solid #e3f2fd;
    color: #222c36;
}
.card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 8px 32px #1976d244, 0 2px 12px #1976d244;
}
.card h3 {
    color: #1976d2;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    text-shadow: none;
}
.card p {
    color: #222c36;
    font-size: 1rem;
    text-shadow: none;
}

/* 关于我们、联系我们 */
.about-section p, .contact-section p, .contact-section ul {
    text-align: center;
    font-size: 1.1rem;
    color: #e0e0e0;
}
.contact-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px #1976d211;
    padding: 2rem 1.2rem;
    margin: 0 auto;
    max-width: 400px;
    color: #222c36;
    border: 1.5px solid #e3f2fd;
}
.contact-card p, .contact-card ul, .contact-card li {
    color: #222c36;
    text-shadow: none;
}
.contact-card li {
    font-weight: bold;
    margin-bottom: 0.5rem;
}
.contact-card li span, .contact-card li a {
    color: #1976d2;
    font-weight: bold;
}
.contact-section ul {
    list-style: none;
    margin-top: 1rem;
}
.contact-section li {
    margin-bottom: 0.5rem;
    color: #00ffe7;
    font-weight: bold;
}

/* 页脚 */
.footer {
    background: #1976d2;
    text-align: center;
    padding: 1.2rem 0;
    color: #e3f2fd;
    font-size: 0.95rem;
    margin-top: 2rem;
    box-shadow: 0 -2px 8px #1976d211;
}

/* 背景美化元素 */
.bg-decor {
    display: none;
}

/* 优势板块可复用card-grid，无需额外样式 */

/* 服务流程板块 */
.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.2rem;
    margin: 2rem 0 0 0;
    flex-wrap: wrap;
}
.step {
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 12px #1976d211;
    padding: 1.2rem 1rem;
    text-align: center;
    flex: 1 1 120px;
    min-width: 110px;
    margin: 0 0.3rem;
    border: 1.5px solid #e3f2fd;
    transition: transform 0.2s, box-shadow 0.2s;
    color: #222c36;
}
.step:hover {
    transform: translateY(-4px) scale(1.04);
    box-shadow: 0 4px 16px #1976d244;
}
.step-num {
    width: 38px;
    height: 38px;
    background: #1976d2;
    color: #fff;
    font-weight: bold;
    font-size: 1.3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.7rem auto;
    box-shadow: 0 2px 8px #1976d288;
}
.step-desc {
    color: #222c36;
    font-size: 1rem;
}

/* 常见问题FAQ板块 */
.faq-list {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.faq-item {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px #1976d211;
    padding: 1.2rem 1rem;
    border-left: 4px solid #1976d2;
    color: #222c36;
    border: 1.5px solid #e3f2fd;
}
.faq-q {
    color: #1976d2;
    font-weight: bold;
    margin-bottom: 0.5rem;
    font-size: 1.08rem;
    text-shadow: none;
}
.faq-a {
    color: #222c36;
    font-size: 1rem;
    text-shadow: none;
}

/* 客户评价板块 */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0 0 0;
}
.testimonial-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px #1976d211;
    padding: 1.5rem 1.2rem;
    border: 1.5px solid #e3f2fd;
    transition: transform 0.2s, box-shadow 0.2s;
    color: #222c36;
}
.testimonial-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 6px 24px #1976d244;
}
.testimonial-content {
    margin-bottom: 1rem;
}
.testimonial-content p {
    color: #222c36;
    font-style: italic;
    font-size: 1rem;
    line-height: 1.5;
    text-shadow: none;
}
.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.author-name {
    color: #1976d2;
    font-weight: bold;
    font-size: 1rem;
    text-shadow: none;
}
.author-service {
    color: #aaa;
    font-size: 0.9rem;
    text-shadow: none;
}

/* 安全承诺板块 */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0 0 0;
}
.security-item {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px #1976d211;
    padding: 1.8rem 1.2rem;
    text-align: center;
    border: 1.5px solid #e3f2fd;
    transition: transform 0.2s, box-shadow 0.2s;
    color: #222c36;
}
.security-item:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 6px 24px #1976d244;
}
.security-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    color: #1976d2;
}
.security-item h3 {
    color: #1976d2;
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
    text-shadow: none;
}
.security-item p {
    color: #222c36;
    font-size: 0.95rem;
    line-height: 1.5;
    text-shadow: none;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .hero-content h1 {
        color: #fff;
    }
    .section h2 {
        color: #1976d2;
    }
    .process-steps {
        flex-direction: column;
        gap: 1rem;
    }
    .step {
        margin: 0 0 1rem 0;
    }
    .hero-flex {
        flex-direction: column;
        gap: 1.5rem;
    }
    .hero-img-col {
        width: 100%;
        order: -1;
    }
    .hero-img img {
        max-width: 90vw;
    }
    .nav-container {
        position: relative;
    }
    .nav-links {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #1976d2;
        flex-direction: column;
        align-items: center;
        gap: 0;
        padding: 0.5rem 0 1rem 0;
        box-shadow: 0 4px 24px #1976d211;
        display: none;
        z-index: 110;
        transition: all 0.3s;
        width: 100%;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-links a {
        margin: 0.7rem 0;
        font-size: 1.1rem;
        width: 100%;
        text-align: center;
        padding: 0.7rem 0;
        border-bottom: 1px solid #1976d244;
        background: none;
    }
    .nav-toggle {
        display: flex;
    }
}
@media (max-width: 600px) {
    .container {
        width: 98%;
    }
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }
    .nav-links {
        margin-top: 0.7rem;
    }
    .nav-links a {
        margin-left: 1rem;
        font-size: 0.98rem;
    }
    .hero {
        padding: 2.2rem 0 1.5rem 0;
        background: linear-gradient(120deg, #1976d2 0%, #63a4ff 100%);
    }
    .hero-content h1 {
        font-size: 1.3rem;
    }
    .section {
        padding: 1.5rem 0 1rem 0;
    }
    .card {
        padding: 1.2rem 0.7rem;
    }
    .contact-card {
        padding: 1.2rem 0.7rem;
    }
}

.hero-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2.5rem;
}
.hero-text {
    flex: 1 1 340px;
    min-width: 240px;
}
.hero-img-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1 1 380px;
    min-width: 240px;
}
.hero-img {
    flex: 1 1 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-img img {
    max-width: 380px;
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 4px 32px #1976d244;
}
@media (max-width: 900px) {
    .hero-flex {
        flex-direction: column;
        gap: 1.5rem;
    }
    .hero-img-col {
        width: 100%;
    }
    .hero-img img {
        max-width: 90vw;
    }
}

.hero-img-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 1.2rem;
    gap: 1rem;
}
.qq-btn {
    background: #ff9800;
    color: #fff;
    font-weight: bold;
    border-radius: 30px;
    padding: 0.8rem 2.2rem;
    font-size: 1.1rem;
    box-shadow: 0 2px 12px #ff980088;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
    border: none;
    outline: none;
}
.qq-btn:hover {
    background: #1976d2;
    color: #fff;
    box-shadow: 0 4px 16px #1976d288;
}

.qq-copy-btn {
    background: #ff9800;
    color: #fff;
    font-weight: bold;
    border-radius: 30px;
    padding: 0.8rem 2.2rem;
    font-size: 1.1rem;
    box-shadow: 0 2px 12px #ff980088;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
    border: none;
    outline: none;
    margin-top: 1rem;
    cursor: pointer;
    display: block;
}
.qq-copy-btn:hover {
    background: #1976d2;
    color: #fff;
    box-shadow: 0 4px 16px #1976d288;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 1rem;
    z-index: 120;
}
.nav-toggle .bar {
    width: 28px;
    height: 4px;
    background: #fff;
    margin: 3px 0;
    border-radius: 2px;
    transition: all 0.3s;
}
.nav-toggle.open .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open .bar:nth-child(2) {
    opacity: 0;
}
.nav-toggle.open .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
@media (max-width: 900px) {
    .nav-links {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #1976d2;
        flex-direction: column;
        align-items: center;
        gap: 0;
        padding: 0.5rem 0 1rem 0;
        box-shadow: 0 4px 24px #1976d211;
        display: none;
        z-index: 110;
        transition: all 0.3s;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-links a {
        margin: 0.7rem 0;
        font-size: 1.1rem;
        width: 100%;
        text-align: center;
        padding: 0.7rem 0;
        border-bottom: 1px solid #1976d244;
    }
    .nav-container {
        position: relative;
    }
    .nav-toggle {
        display: flex;
    }
}