body {
    background: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #333;
}

/* ===== Services Modal ===== */
.services-modal {
    display: none;
}

.services-modal .services-modal-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 998;
}

.services-modal .services-modal-body {
    position: fixed;
    top: 20%;
    left: 50%;
    z-index: 999;
    transform: translate(-50%, 0);
    background: #fff;
    border-radius: 8px;
    width: 300px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.services-modal .services-modal-body .body {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

.services-modal .services-modal-body .body img {
    width: 80%;
}

.services-modal .services-modal-body .body p {
    width: 100%;
    margin: 0;
    padding: 0;
    text-align: center;
    color: #666;
}

.services-modal .services-modal-body .body p.service-title {
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    color: #3878fe;
}

.services-modal .head {
    height: 50px;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 15px;
    font-weight: 600;
    color: #333;
    padding-left: 20px;
}

.services-modal .close-btn {
    cursor: pointer;
    margin-right: 14px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #999;
    transition: color 0.3s;
}

.services-modal .close-btn:hover {
    color: #333;
}

.services-modal .close-btn::after {
    content: '✕';
}

/* ===== Navigation ===== */
.navigation {
    width: 100%;
    height: 70px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99;
    transition: all 0.3s;
}

.navigation a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

.navigation a:hover {
    color: #fff;
}

.navigation .title {
    font-size: 22px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
}

.navigation-fixed {
    background-color: #fff;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.navigation-fixed .title {
    color: #1e293b;
}

.navigation-fixed a {
    color: #475569;
}

.navigation-fixed a:hover {
    color: #3878fe;
}

.navigation-container {
    width: 100%;
    max-width: 1100px;
    height: 70px;
    line-height: 70px;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navigation-icon {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    cursor: pointer;
}

.navigation-fixed .navigation-icon {
    color: #333;
}

.navigation-container-menu {
    display: flex;
}

.navigation-container-lists {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.navigation-container-lists li {
    padding: 0 12px;
    height: 70px;
    display: flex;
    align-items: center;
}

.navigation-container-kefu {
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #fff;
    height: 38px;
    padding: 0 16px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    transition: all 0.3s;
    white-space: nowrap;
}

.navigation-container-kefu:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.navigation-container-kefu i {
    font-size: 18px;
}

.navigation-fixed .navigation-container-kefu {
    border-color: #3878fe;
    color: #3878fe;
}

.navigation-fixed .navigation-container-kefu:hover {
    background: #eff6ff;
}

/* ===== Hero Banner ===== */
.hero-banner {
    padding: 100px 0 60px;
    width: 100%;
    min-height: 520px;
    background: linear-gradient(135deg, #0a1628 0%, #0d2137 30%, #132e4a 60%, #0a1628 100%);
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(56, 120, 254, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 200, 150, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-left {
    width: 55%;
}

.hero-left h1 {
    font-size: 40px;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-left h1 .highlight {
    background: linear-gradient(90deg, #3878fe, #00c896);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
    max-width: 520px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 50px;
    padding: 0 30px;
    background: linear-gradient(135deg, #3878fe, #2563eb);
    color: #fff;
    border-radius: 6px;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(56, 120, 254, 0.4);
    transform: translateY(-2px);
}

.btn-primary i {
    font-size: 20px;
    transition: transform 0.3s;
}

.btn-primary:hover i {
    transform: translateX(4px);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 50px;
    padding: 0 30px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    border-radius: 6px;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    background: transparent;
}

.btn-outline:hover {
    border-color: #3878fe;
    background: rgba(56, 120, 254, 0.1);
}

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

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.stat-plus {
    font-size: 20px;
    color: #3878fe;
}

.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 6px;
}

/* Code Window */
.hero-right {
    width: 42%;
    display: flex;
    justify-content: flex-end;
}

.hero-visual {
    width: 100%;
    max-width: 420px;
    perspective: 1000px;
}

.code-window {
    background: #1e293b;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
    transform: rotateY(-5deg) rotateX(3deg);
    transition: transform 0.5s;
}

.code-window:hover {
    transform: rotateY(0) rotateX(0);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #0f172a;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }

.code-title {
    margin-left: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    font-family: monospace;
}

.code-body {
    padding: 20px;
    font-family: 'Fira Code', 'Cascadia Code', Consolas, monospace;
    font-size: 14px;
    line-height: 1.8;
}

.code-line {
    color: rgba(255, 255, 255, 0.8);
}

.code-line.indent {
    padding-left: 24px;
}

.c-keyword { color: #c084fc; }
.c-var { color: #67e8f9; }
.c-prop { color: #fbbf24; }
.c-string { color: #86efac; }
.c-func { color: #60a5fa; }
.c-comment { color: rgba(255, 255, 255, 0.3); }

/* ===== Section Common ===== */
.section {
    width: 100%;
    padding: 80px 0;
    float: left;
}

.section .container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
    box-sizing: border-box;
}

.bg-white { background: #fff; }
.section:not(.bg-white) { background: #f8fafc; }

.section-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    color: #1e293b;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 15px;
    text-align: center;
    color: #64748b;
    margin-bottom: 50px;
}

/* ===== Service Cards ===== */
.service-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 32px 28px;
    margin: 10px 0;
    transition: all 0.3s;
    cursor: default;
}

.service-card:hover {
    border-color: #3878fe;
    box-shadow: 0 12px 40px rgba(56, 120, 254, 0.12);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 26px;
}

.service-icon i {
    font-size: 26px;
}

.icon-blue { background: #eff6ff; color: #3878fe; }
.icon-green { background: #f0fdf4; color: #22c55e; }
.icon-purple { background: #faf5ff; color: #a855f7; }
.icon-orange { background: #fff7ed; color: #f97316; }
.icon-red { background: #fef2f2; color: #ef4444; }
.icon-teal { background: #f0fdfa; color: #14b8a6; }

.service-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 10px;
}

.service-card p {
    font-size: 14px;
    line-height: 1.7;
    color: #64748b;
}

/* ===== Advantages ===== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s;
}

.advantage-item:hover {
    border-color: #3878fe;
    box-shadow: 0 8px 30px rgba(56, 120, 254, 0.1);
}

.advantage-num {
    font-size: 32px;
    font-weight: 800;
    color: #e2e8f0;
    line-height: 1;
    flex-shrink: 0;
}

.advantage-item:hover .advantage-num {
    color: #3878fe;
}

.advantage-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.advantage-content p {
    font-size: 14px;
    line-height: 1.7;
    color: #64748b;
}

/* ===== Cases ===== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 28px;
    transition: all 0.3s;
    cursor: default;
}

.case-card:hover {
    background: #fff;
    border-color: #3878fe;
    box-shadow: 0 8px 30px rgba(56, 120, 254, 0.1);
    transform: translateY(-3px);
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #eff6ff;
    color: #3878fe;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 14px;
}

.case-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 10px;
}

.case-card p {
    font-size: 14px;
    line-height: 1.7;
    color: #64748b;
    margin-bottom: 16px;
}

.case-tech {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.case-tech span {
    padding: 3px 10px;
    background: #f1f5f9;
    color: #475569;
    border-radius: 4px;
    font-size: 12px;
}

/* ===== Process ===== */
.process-flow {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.process-step {
    text-align: center;
    width: 160px;
    flex-shrink: 0;
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 14px;
    background: linear-gradient(135deg, #3878fe, #2563eb);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
}

.step-num {
    font-size: 12px;
    color: #3878fe;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.process-step h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.process-step p {
    font-size: 13px;
    line-height: 1.6;
    color: #64748b;
}

.process-arrow {
    display: flex;
    align-items: center;
    padding-top: 20px;
    color: #cbd5e1;
    font-size: 24px;
    margin: 0 8px;
    flex-shrink: 0;
}

/* ===== About ===== */
.about-container {
    display: flex;
    gap: 60px;
    align-items: flex-start;
}

.about-left {
    width: 55%;
}

.about-text p {
    font-size: 15px;
    line-height: 1.8;
    color: #475569;
    margin-bottom: 14px;
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.about-tag {
    padding: 6px 16px;
    background: #eff6ff;
    color: #3878fe;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.about-right {
    width: 45%;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.partner-item {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 16px 12px;
    text-align: center;
    font-size: 14px;
    color: #475569;
    font-weight: 500;
    transition: all 0.3s;
}

.partner-item:hover {
    border-color: #3878fe;
    color: #3878fe;
    background: #eff6ff;
}

/* ===== CTA ===== */
.cta-section {
    width: 100%;
    padding: 80px 0;
    background: linear-gradient(135deg, #0a1628 0%, #132e4a 50%, #0d2137 100%);
    float: left;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(56, 120, 254, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-container {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}

.cta-section p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 30px;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 50px;
    padding: 0 36px;
    background: #fff;
    color: #2563eb;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-white:hover {
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-white i {
    font-size: 20px;
    transition: transform 0.3s;
}

.btn-white:hover i {
    transform: translateX(4px);
}

/* ===== Footer ===== */
#footer {
    background: #fff;
}

#copyright {
    background: #fff;
    padding: 20px 0 10px;
    border-top: 1px solid #eaeaea;
    color: #546e7a;
}

#copyright .container {
    max-width: 1100px;
    margin: 0 auto;
}

#copyright p {
    margin-bottom: 0;
    line-height: 40px;
}

#copyright .nav-inline .nav-link {
    color: #546e7a;
    padding: 10px 0;
    margin-left: 10px;
    cursor: pointer;
}

#copyright .nav-inline .nav-link:hover {
    color: #3878fe;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .navigation {
        background-color: #0d2137;
    }
    .navigation-fixed {
        background-color: #fff;
    }
    .navigation-icon {
        display: flex;
    }
    .navigation-container {
        flex-wrap: wrap;
    }
    .navigation-container-menu {
        display: none;
        width: 100%;
        background: #0d2137;
    }
    .navigation-fixed .navigation-container-menu {
        background: #fff;
    }
    .navigation-container-lists {
        flex-direction: column;
        width: 100%;
        gap: 0;
        padding: 10px 0;
    }
    .navigation-container-lists li {
        height: 44px;
        width: 100%;
        padding: 0 20px;
    }
    .navigation a {
        color: rgba(255, 255, 255, 0.85);
        width: 100%;
        display: block;
        line-height: 44px;
    }
    .navigation-fixed a {
        color: #475569;
    }
    .navigation-container-kefu {
        margin: 10px 20px;
        border-color: rgba(255, 255, 255, 0.3);
    }
    .navigation-fixed .navigation-container-kefu {
        border-color: #3878fe;
    }
    .hero-banner {
        padding: 80px 0 40px;
        min-height: auto;
    }
    .hero-container {
        flex-direction: column;
    }
    .hero-left {
        width: 100%;
        padding: 0 15px;
    }
    .hero-left h1 {
        font-size: 28px;
        text-align: center;
    }
    .hero-desc {
        font-size: 14px;
        text-align: center;
    }
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    .hero-stats {
        justify-content: center;
    }
    .hero-right {
        width: 100%;
        padding: 30px 15px 0;
        justify-content: center;
    }
    .code-window {
        transform: none;
        max-width: 360px;
        margin: 0 auto;
    }
    .section {
        padding: 40px 0;
    }
    .section-title {
        font-size: 26px;
    }
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    .case-grid {
        grid-template-columns: 1fr;
    }
    .process-flow {
        flex-direction: column;
        align-items: center;
    }
    .process-arrow {
        transform: rotate(90deg);
        padding-top: 0;
        margin: 8px 0;
    }
    .about-container {
        flex-direction: column;
        gap: 30px;
    }
    .about-left,
    .about-right {
        width: 100%;
    }
    .about-left .section-title {
        text-align: center;
    }
    .partner-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .cta-section h2 {
        font-size: 24px;
    }
    .navigation-container-lists li {
        height: 50px;
        line-height: 50px;
    }
}