:root {
    --primary: #2c6fb7;
    --primary-dark: #1d4f8a;
    --accent: #ff7d21;
    --accent-dark: #e86d17;
    --light: #f8f9fa;
    --dark: #333;
    --text: #444;
    --border-radius: 12px;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --light-bg: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    --light-text: #2c5282;
    --light-card-bg: rgba(255, 255, 255, 0.7);
    --light-card-border: rgba(44, 82, 130, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #fff;
    background: linear-gradient(135deg, #2c5282 0%, #426b9f 100%);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

body::-webkit-scrollbar {
    display: none;
}

html,
body {
    height: 100%;
    overflow: auto;
}

.header {
    background: rgba(44, 82, 130, 0.95);
    box-shadow: 0 5px 20px rgba(0, 30, 70, 0.2);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.header-content {
    max-width: 1260px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
}



#tagDownload, #tagInstall {
    cursor: pointer;
}

.logo-bg {
    width: 45px;
    height: 45px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.header-tags {
    display: flex;
    gap: 20px;
}

.tag {
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    color: var(--light);
    transition: var(--transition);
}

.tag:hover {
    background: rgba(255, 255, 255, 0.2);
}

.banner {
    padding-top: 120px;
    max-width: 1260px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    gap: 50px;
    padding: 150px 20px 60px;
    position: relative;
}

.banner::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -11%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
}

.banner-content {
    flex: 1;
    animation: fadeInUp 0.8s ease-out;
}

.banner-title {
    margin-bottom: 25px;
    position: relative;
    text-align: left;
}

.banner-title h1 {
    font-size: 70px;
    font-weight: 800;
    background: linear-gradient(90deg, var(--light), #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.3;
    letter-spacing: -0.5px;
    display: inline-block;
}

.banner-title span {
    background: var(--accent);
    color: white;
    font-size: 18px;
    padding: 4px 16px;
    border-radius: 20px 0;
    position: absolute;
    top: -30px;
    left: 0;
    box-shadow: 0 4px 10px rgba(255, 125, 33, 0.3);
}

.banner-description {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.banner-description p {
    font-size: 24px;
    font-weight: 600;
    color: #ff9c4d;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.banner-description p::before {
    content: "";
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ff9c4d;
}

.banner-description span {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

.features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature:hover {
    background: rgba(255, 255, 255, 0.2);
}

.feature:hover .feature-icon {
    background: rgba(44, 111, 183, 0.25);
    color: var(--accent);
}

.feature-icon {
    width: 45px;
    height: 45px;
    background: rgba(44, 111, 183, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 18px;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.feature-text {
    font-weight: 500;
}

.download-container {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    margin-top: 20px;
    flex-direction: row;
}

.download-btn {
    display: flex;
    flex-direction: column;
    width: 300px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(255, 125, 33, 0.4);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    text-decoration: none;
    will-change: transform, box-shadow;
}

.download-btn:hover {
    box-shadow: 0 12px 25px rgba(255, 125, 33, 0.5);
}

.download-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 20px;
    height: 200%;
    background: rgba(255, 255, 255, 0.4);
    transform: rotate(25deg);
    transition: all 0.6s;
}

.download-btn:hover::after {
    left: 120%;
}

.btn-top {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    gap: 15px;
}

.btn-top i {
    font-size: 28px;
    color: white;
}

.btn-top span {
    font-size: 28px;
    font-weight: 700;
    color: white;
}

.btn-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px 0;
    background: rgba(0, 0, 0, 0.05);
}

.features-list {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 0 10px;
    flex-wrap: nowrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.feature-item i {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.feature-item span {
    font-size: 12.5px;
    color: rgba(255, 255, 255, 0.9);
}

.download-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.download-count {
    font-size: 18px;
    font-weight: 500;
}

.download-count strong {
    color: #ff9c4d;
    font-size: 28px;
    font-weight: 700;
}

.system-support {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 5px;
}

.banner-image {
    flex: 1;
    margin-top: 111px;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: float 6s ease-in-out infinite;
    max-width: 100%;
}

.banner-bg {
    width: 100%;
    max-width: 580px;
    height: 400px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    filter: drop-shadow(0 20px 30px rgba(44, 111, 183, 0.3));
    border-radius: 20px;
}

.features-carousel {
    background: var(--light-bg);
    padding: 70px 20px 0px;
    position: relative;
    overflow: hidden;
}

.features-carousel::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(173, 216, 230, 0.2);
    z-index: 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--light-text);
    display: inline-block;
    padding-bottom: 15px;
    position: relative;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
}

.goods-container {
    max-width: 1260px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.goods-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
    position: relative;
}

.goods-item {
    background: var(--light-card-bg);
    border: 1px solid var(--light-card-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(5px);
    cursor: pointer;
}

.goods-item:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: rgba(44, 82, 130, 0.3);
}

.goods-img {
    height: 200px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(45deg, #f0f7ff, #d8eaff);
    display: flex;
    align-items: center;
    justify-content: center;
}

.goods-img::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><polygon points="0,100 100,0 100,100" style="fill:rgba(255,255,255,0.2);"/></svg>');
    background-size: 100% 100%;
}

.goods-img img {
    height: auto;
    transition: transform 0.5s ease;
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.2));
}

.goods-item:hover .goods-img img {
    transform: scale(1.1);
}

.goods-content {
    padding: 18px 14px;
}

.goods-content h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.goods-content h3 span {
    color: var(--accent);
    font-weight: 800;
}

.goods-content h4 {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 500;
}

.goods-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
    font-size: 18px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    text-decoration: none;
    will-change: transform, box-shadow;
}

.goods-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 20px;
    height: 200%;
    background: rgba(255, 255, 255, 0.4);
    transform: rotate(25deg);
    transition: all 0.6s;
}

.goods-btn:hover::after {
    left: 120%;
}

.goods-btn:hover {
    box-shadow: 0 12px 25px rgba(255, 125, 33, 0.5);
    background: linear-gradient(90deg, var(--accent-dark) 0%, #d85b0d 100%);
}

.corner-ribbon {
    position: absolute;
    top: 12px;
    left: -30px;
    width: 105px;
    padding: 5px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    font-weight: bold;
    font-size: 16px;
    transform: rotate(-45deg);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    z-index: 20;
    pointer-events: none;
    height: 27px;
    line-height: 15px;
    backface-visibility: hidden;
}

.video-container {
    max-width: 1260px;
    margin: 0 auto 60px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
    border: 1px solid rgba(44, 82, 130, 0.15);
}

.video-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    position: relative;
    z-index: 0;
}

.video-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(244, 247, 250, 0.6), rgba(228, 237, 245, 0.6));
    z-index: 1;
}

.video-container video {
    width: 100%;
    display: block;
    position: relative;
    z-index: 0;
}

.service-section {
    max-width: 1260px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.service-title {
    text-align: center;
    margin-bottom: 60px;
}

.service-title h3 {
    font-size: 40px;
    font-weight: 700;
    color: var(--light-text);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: relative;
    display: inline-block;
}

.service-title h3::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
}

.service-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-item {
    text-align: center;
    padding: 40px 20px;
    background: var(--light-card-bg);
    border: 1px solid var(--light-card-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    backdrop-filter: blur(5px);
}

.service-item:hover {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: rgba(44, 82, 130, 0.3);
}

.service-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(44, 111, 183, 0.08);
    color: #2c5282;
    font-size: 40px;
    transition: var(--transition);
    border: 2px solid rgba(44, 82, 130, 0.1);
}

.service-item:hover .service-icon {
    transform: scale(1.1);
    background: rgba(44, 111, 183, 0.15);
    color: var(--accent);
}

.service-item h3 {
    font-size: 22px;
    color: #333;
    font-weight: 600;
}

.footer {
    background: rgba(22, 42, 70, 0.9);
    text-align: center;
    padding: 35px 0 20px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
    overflow: hidden;
    width: 100vw;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><polygon points="0,0 100,100 0,100" style="fill:rgba(255,255,255,0.03);"/></svg>');
    background-size: 100% 100%;
    z-index: -1;
}

.footer-img {
    width: 100px;
    height: 100px;
    margin: 0 auto 5px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition);
}

.footer-logo-bg {
    width: 60%;
    height: 60%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

.footer h3 {
    font-size: 38px;
    color: white;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: 1px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 50px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    font-weight: 600;
    font-size: 20px;
    border-radius: 50px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(255, 125, 33, 0.3);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    will-change: transform, box-shadow;
}

.service-link::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 20px;
    height: 200%;
    background: rgba(255, 255, 255, 0.4);
    transform: rotate(25deg);
    transition: all 0.6s;
}

.service-link:hover::after {
    left: 120%;
}

.service-link:hover {
    box-shadow: 0 10px 25px rgba(255, 125, 33, 0.5);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

@media (max-width: 992px) {
    .banner {
        flex-direction: column;
        align-items: center;
        padding: 120px 20px 40px;
    }
    
    .banner::before,
    .features-carousel::before {
        display: none;
    }

    .banner-title {
        text-align: center;
        margin-bottom: 25px;
    }

    .banner-title h1 {
        font-size: 50px;
        line-height: 1.2;
        display: block;
    }

    .banner-title span {
        left: 50%;
        transform: translateX(-50%);
        top: -40px;
        right: auto;
        font-size: 16px;
    }

    .banner-image {
        margin-top: 30px;
        width: 100%;
        max-width: 500px;
        height: auto;
        order: -1;
    }

    .banner-bg {
        height: 300px;
    }

    .feature {
        padding: 10px 15px;
        font-size: 16px;
    }

    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .download-container {
        flex-direction: column;
        align-items: center;
    }

    .download-btn {
        width: 100%;
        max-width: 300px;
    }

    .download-info {
        text-align: center;
        margin-top: 20px;
    }

    .goods-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .service-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .header-tags {
        flex-wrap: wrap;
        justify-content: center;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .goods-title h3 {
        font-size: 28px;
    }

    .goods-title h4 {
        font-size: 18px;
    }

    .service-title h3 {
        font-size: 32px;
    }

    .goods-list {
        grid-template-columns: 1fr;
    }

    .corner-ribbon {
        top: 10px;
        left: -40px;
        width: 130px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .banner-title h1 {
        font-size: 36px;
    }

    .banner-description p {
        font-size: 18px;
    }

    .banner-description span {
        font-size: 15px;
    }

    .download-btn .btn-top span {
        font-size: 24px;
    }

    .download-count strong {
        font-size: 24px;
    }

    .goods-content h3 {
        font-size: 20px;
    }

    .banner-bg {
        height: 250px;
    }
}

    .logo-container a {
      text-decoration: none;
      color: inherit;
      display: inline-block;
    }
    .logo-container a:hover,
    .logo-container a:focus {
      text-decoration: none;
      color: inherit;
    }



.footer-content {
    background-color: black;
    line-height: 40px;
    display: flex;
    gap: 20px;
    font-size: 12px;
    justify-content: center;
    align-items: center;
}