: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; }
.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: 120px 20px 40px; 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: 16px; 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; max-width: 100%; }
.banner-image.float-active { animation: float 6s ease-in-out infinite; }
.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; position: relative; z-index: 1;height: 701PX;}
.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; }

.dl-modal { display: none; position: fixed; z-index: 10001; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.6); backdrop-filter: blur(8px); align-items: center; justify-content: center; }
.dl-modal-content { background: #fff; width: 90%; max-width: 420px; border-radius: 20px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); overflow: hidden; position: relative; animation: dlModalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); }
@keyframes dlModalIn { from { transform: translateY(20px) scale(0.95); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }

.dl-close { position: absolute; top: 15px; right: 20px; width: 28px; height: 28px; color: #94a3b8; font-size: 20px; cursor: pointer; transition: all 0.2s; z-index: 10; display: flex; align-items: center; justify-content: center; line-height: 1; }
.dl-close:hover { color: #64748b; transform: rotate(90deg); }

.dl-header { background: #f8fafc; padding: 25px 20px 20px; border-bottom: 1px solid #e2e8f0; text-align: center; }
.dl-title { color: #1e293b; font-size: 19px; font-weight: 700; }
.dl-status { color: #10b981; font-size: 13px; margin-top: 5px; display: flex; align-items: center; justify-content: center; gap: 5px; }

.dl-body { padding: 30px; min-height: 220px; display: flex; flex-direction: column; justify-content: center; }
.dl-step { font-size: 14px; color: #94a3b8; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.dl-step.active { color: var(--primary); font-weight: 600; }
.dl-step.done { color: #10b981; }

.dl-progress-container { background: #e2e8f0; height: 6px; border-radius: 10px; overflow: hidden; margin: 10px 0 20px; }
.dl-progress-bar { background: linear-gradient(90deg, var(--primary), #60a5fa); height: 100%; width: 0%; transition: width 0.3s; }

.dl-result { display: none; width: 100%; animation: dlFadeIn 0.5s ease; }
@keyframes dlFadeIn { from { opacity: 0; } to { opacity: 1; } }

.dl-node-list { 
    display: flex; 
    flex-direction: column; 
    gap: 15px;
    padding: 5px 0;
}

.dl-node-item { 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    gap: 10px; 
    padding: 16px; 
    border-radius: 12px; 
    border: 1px solid #e2e8f0; 
    color: #475569; 
    text-decoration: none; 
    font-weight: 600; 
    transition: all 0.2s; 
    margin-bottom: 5px;
}

.dl-node-item:hover { background: #f1f5f9; transform: translateY(-2px); color: #1e293b; }

.dl-node-primary { background: linear-gradient(90deg, var(--accent) 0%, var(--accent-dark) 100%); color: #fff; border: none; box-shadow: 0 4px 12px rgba(255, 125, 33, 0.3); }
.dl-node-primary:hover { 
    background: linear-gradient(90deg, var(--accent-dark) 0%, #d85b0d 100%) !important; 
    color: #fff !important; 
    box-shadow: 0 6px 15px rgba(255, 125, 33, 0.4); 
}

#globalLoader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, #1d4f8a 0%, #2c5282 100%);
    z-index: 999999; display: flex; flex-direction: column; 
    align-items: center; justify-content: center;
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.6s;
}
#globalLoader.loader-hidden { opacity: 0; visibility: hidden; }
.loader-ring {
    width: 60px; height: 60px; border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid #ff7d21; border-right: 4px solid #ff7d21;
    border-radius: 50%; animation: loaderSpin 1s linear infinite;
    box-shadow: 0 0 20px rgba(255, 125, 33, 0.2);
}
.loader-text {
    margin-top: 20px; color: #fff; font-size: 15px; letter-spacing: 2px;
    font-weight: 600; animation: pulseText 1.5s ease-in-out infinite;
}
@keyframes loaderSpin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
@keyframes pulseText { 0%, 100% { opacity: 0.6; } 50% { opacity: 1; } }