* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
html {
    scroll-behavior: smooth;
}
body {
    background: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    position: relative;
}
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/static/theme/images/background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    opacity: 0.05;
    z-index: -1;
    pointer-events: none;
}
.body-inner {
    position: relative;
    z-index: 1;
    background: transparent;
}
.shadow-container {
    width: 100%;
    border: none;
    display: block;
    overflow: visible;
}
#banner-area,
.tech-section {
    margin: 0;
    padding: 0;
    width: 100%;
    clear: both;
    position: relative;
    display: block;
}
#banner-area {
    position: relative;
    height: 650px;
    background-size: cover;
    background-position: center;
    overflow: hidden;
    display: flex;
    align-items: center;
}
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.2) 80%, rgba(0,0,0,0) 100%);
    z-index: 1;
}
.banner-content-wrapper {
    max-width: 1500px;
    width: 100%;
    margin: 0 auto;
    padding: 0 30px;
    position: relative;
    z-index: 2;
}
.banner-text {
    text-align: left;
    color: white;
    max-width: 1400px;
    width: 100%;
}
.banner-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
    line-height: 1.2;
    letter-spacing: 1px;
}
.banner-subtitle {
    font-size: 26px;
    color: #ffb600;
    font-weight: 600;
    margin-bottom: 15px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
}
.banner-description {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 30px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
    opacity: 0.95;
    max-width: 700px;
}
.banner-actions {
    display: flex;
    gap: 20px;
    margin-top: 40px;
}
.banner-btn-primary {
    display: inline-block;
    padding: 15px 40px;
    background-color: #ffb600;
    color: #333;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    border: none;
    cursor: pointer;
}
.banner-btn-primary:hover {
    background-color: #e6a400;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.3);
    color: #222;
    text-decoration: none;
}
.banner-btn-secondary {
    display: inline-block;
    padding: 15px 40px;
    background-color: transparent;
    color: white;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}
.banner-btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    text-decoration: none;
}
.banner-line {
    width: 80px;
    height: 4px;
    background-color: #ffb600;
    margin: 20px 0;
}
.tech-section {
    width: 100%;
    padding: 60px 0;
    background: transparent;
}
.tech-container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 30px;
}
.tech-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 70px;
    margin-bottom: 100px;
    background: #fff;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    padding: 50px;
    border: 1px solid #f0f0f0;
    position: relative;
}
.tech-item.reverse {
    flex-direction: row-reverse;
}
.tech-img {
    flex: 0 0 50%;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    position: relative;
}
.tech-img::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,182,0,0.1), transparent);
    pointer-events: none;
    z-index: 1;
}
.tech-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.tech-text {
    flex: 1;
    min-height: 300px;
    padding: 20px 0;
}
.tech-item:last-child {
    margin-bottom: 0;
}
.tech-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 16px;
    font-weight: 700;
    color: #ffb600;
    background: rgba(255,182,0,0.1);
    padding: 6px 12px;
    border-radius: 20px;
}
.tech-item.reverse .tech-number {
    right: auto;
    left: 20px;
}
.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(to bottom, #ffb600, #ffd166);
}
.tech-item.reverse::before {
    left: auto;
    right: 0;
}
.support-section {
    width: 100%;
    padding: 60px 0 0;
    text-align: center;
}
.support-wrap {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 30px;
}
.support-section h2 {
    font-size: 32px;
    font-weight: 700;
    color: #111;
    margin-bottom: 25px;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}
.support-section h2::after {
    content: '';
    width: 70px;
    height: 4px;
    background: #ffb600;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}
.support-section p {
    font-size: 18px;
    color: #555;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}
@media (max-width: 1200px) {
    .tech-item,
    .tech-item.reverse {
        flex-direction: column;
        gap: 50px;
    }
    .tech-img {
        width: 100%;
        height: 380px;
    }
    #banner-area {
        height: 500px;
    }
    .banner-title {
        font-size: 36px;
    }
    .banner-subtitle {
        font-size: 22px;
    }
    .banner-description {
        font-size: 18px;
    }
    .tech-item {
        padding: 40px;
    }
}
@media (max-width: 768px) {
    .tech-container {
        padding: 0 20px;
    }
    .banner-content-wrapper {
        padding: 0 20px;
    }
    .banner-title {
        font-size: 28px;
    }
    .banner-subtitle {
        font-size: 18px;
    }
    .banner-description {
        font-size: 16px;
    }
    .banner-actions {
        flex-direction: column;
        gap: 15px;
    }
    .banner-btn-primary,
    .banner-btn-secondary {
        width: 100%;
        text-align: center;
    }
    .tech-section {
        padding: 60px 0;
    }
    .tech-img {
        height: 300px;
    }
    .tech-item {
        margin-bottom: 60px;
        padding: 30px 20px;
    }
    .tech-number {
        top: 15px;
        right: 15px;
        font-size: 14px;
        padding: 4px 10px;
    }
    .tech-item.reverse .tech-number {
        left: 15px;
    }
    .support-section {
        padding: 40px 0 60px;
    }
    .support-section h2 {
        font-size: 26px;
    }
    .support-section p {
        font-size: 16px;
    }
}
/* ====================== 技术支持页 - 全套统一动画 ====================== */
@keyframes fadeUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 1. Banner 文字依次动画 */
.banner-subtitle,
.banner-title,
.banner-line,
.banner-description,
.banner-actions {
    opacity: 0;
    animation: fadeUp 0.9s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}
.banner-subtitle { animation-delay: 0.2s; }
.banner-title { animation-delay: 0.4s; }
.banner-line { animation-delay: 0.6s; }
.banner-description { animation-delay: 0.8s; }
.banner-actions { animation-delay: 1.0s; }

/* 2. 技术模块 依次动画 */
.tech-item {
    opacity: 0;
    animation: fadeUp 0.9s ease forwards;
}
.tech-item:nth-child(1) { animation-delay: 0.4s; }
.tech-item:nth-child(2) { animation-delay: 0.7s; }
.tech-item:nth-child(3) { animation-delay: 1.0s; }

/* 3. 技术模块内部图片 & 文字 */
.tech-img,
.tech-text {
    opacity: 0;
    animation: fadeUp 0.9s ease forwards;
}
.tech-img { animation-delay: 0.3s; }
.tech-text { animation-delay: 0.6s; }

/* 4. 底部支持模块 */
.support-wrap h2,
.support-wrap p {
    opacity: 0;
    animation: fadeUp 0.9s ease forwards;
}
.support-wrap h2 { animation-delay: 0.4s; }
.support-wrap p { animation-delay: 0.7s; }