* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    color: rgba(0, 0, 0, 0.88);
    line-height: 1.5714285714285714;
    position: relative;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 60% 60%, rgba(236, 72, 153, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    animation: backgroundFloat 20s ease-in-out infinite;
}

@keyframes backgroundFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}

.header {
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    padding: 0 32px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 35px;
    font-weight: 600;
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
    position: relative;
    padding: 8px 0;
}

.logo img {
    height: 40px;
    width: auto;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.logo:hover img {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.4));
}

.logo-text {
    font-size: 26px;
    font-weight: 600;
    color: #498CF7;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.nav-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.nav-btn {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.15), rgba(138, 43, 226, 0.1));
    color: #ffffff;
    border: 1px solid rgba(0, 255, 255, 0.3);
    padding: 10px 18px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 16px rgba(0, 255, 255, 0.1);
}

.nav-btn:hover {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.25), rgba(138, 43, 226, 0.2));
    border-color: rgba(0, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 255, 255, 0.2);
}

.nav-btn.active {
    background: linear-gradient(135deg, #00ffff, #8a2be2);
    border-color: rgba(0, 255, 255, 0.5);
    font-weight: 600;
    box-shadow: 0 6px 20px rgba(0, 255, 255, 0.3);
}

.main-container {
    max-width: 1400px;
    margin: 32px auto;
    padding: 0 32px;
}

.card {
    background: 
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.9) 0%, 
            rgba(248, 250, 252, 0.85) 50%, 
            rgba(255, 255, 255, 0.9) 100%),
        url('https://superchipdata.com/Templates/xingchao/images/subbg1.png');
    background-size: 100% 100%, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1), 0 8px 32px rgba(0,0,0,0.06);
    padding: 40px 36px;
    margin-bottom: 32px;
    border: 1px solid rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6, #10b981, #8b5cf6, #ec4899);
    border-radius: 24px 24px 0 0;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 32px 80px rgba(0,0,0,0.15), 0 12px 40px rgba(0,0,0,0.08);
}

.page-title1 {
    font-size: 32px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 12px;
    text-align: center;
    letter-spacing: -1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-title::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #00ffff, #8a2be2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.8;
    z-index: -1;
    filter: blur(2px);
}

.page-subtitle {
    color: #64748b;
    font-size: 18px;
    margin-bottom: 32px;
    text-align: center;
    font-weight: 500;
    line-height: 1.5;
}

.tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    justify-content: center;
    background: 
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.7) 0%, 
            rgba(248, 250, 252, 0.6) 50%, 
            rgba(255, 255, 255, 0.7) 100%),
        url('https://superchipdata.com/Templates/xingchao/images/subbg1.png');
    background-size: 100% 100%, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    padding: 12px;
    border-radius: 16px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.4);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.tab {
    padding: 16px 32px;
    border-radius: 12px;
    background: transparent;
    color: #64748b;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 16px;
    position: relative;
    overflow: hidden;
}

.tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.tab:hover::before {
    left: 100%;
}

.tab:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    transform: translateY(-2px);
}

.tab.active {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

.space-visual {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    gap: 16px;
    justify-items: center;
    align-items: center;
    margin: 24px 0;
    position: relative;
    min-height: 280px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.space-visual::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    border: 2px dashed rgba(22,119,255,0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.space-visual::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80px;
    height: 80px;
    border: 1px solid rgba(22,119,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

/* 最外边框 */
.outer-border {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 448px;
    height: 448px;
    border: none;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    background: rgba(22,119,255,0.05);
}

/* 流动虚线连接器 */
.flow-connector {
    position: absolute;
    z-index: 2;
    pointer-events: none;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.flow-connector svg {
    width: 100%;
    height: 100%;
}

.flow-connector path {
    stroke: #1677ff;
    stroke-width: 2;
    stroke-dasharray: 8, 4;
    fill: none;
    stroke-linecap: round;
    animation: flowDash 2s linear infinite;
}

.flow-connector.provider path {
    stroke: #52c41a;
}

.flow-connector.user path {
    stroke: #fa8c16;
}

.flow-connector.service path {
    stroke: #722ed1;
}

@keyframes flowDash {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -12; }
}

@keyframes nodeFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-6px); }
}

@keyframes pulse {
    0%, 100% { 
        background-position: 0% 50%;
        transform: scale(1);
    }
    50% { 
        background-position: 100% 50%;
        transform: scale(1.05);
    }
}

.space-node {
    background: linear-gradient(135deg, #1677ff, #4096ff);
    color: #fff;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(22,119,255,0.15);
    position: relative;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: nodeFloat 3s ease-in-out infinite;
    text-align: center;
    line-height: 1.2;
    z-index: 3;
}
.space-node:nth-child(5) { animation-delay: 0s; }
.space-node:nth-child(6) { animation-delay: 0.3s; }
.space-node:nth-child(7) { animation-delay: 0.6s; }
.space-node:nth-child(8) { animation-delay: 0.9s; }
.space-node:nth-child(9) { animation-delay: 1.2s; }

.space-node:hover {
    transform: translateY(-8px) scale(1.1);
    box-shadow: 0 8px 24px rgba(22,119,255,0.25);
}

.space-node::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: linear-gradient(45deg, #1677ff, #4096ff, #1677ff);
    background-size: 200% 200%;
    animation: pulse 2s ease-in-out infinite;
    opacity: 0.3;
    z-index: -1;
}

.space-node-icon {
    font-size: 20px;
    margin-bottom: 4px;
}

.space-node.provider {
    background: linear-gradient(135deg, #52c41a, #73d13d);
}
.space-node.provider::before {
    background: linear-gradient(45deg, #52c41a, #73d13d, #52c41a);
}

.space-node.user {
    background: linear-gradient(135deg, #fa8c16, #ffa940);
}
.space-node.user::before {
    background: linear-gradient(45deg, #fa8c16, #ffa940, #fa8c16);
}

.space-node.service {
    background: linear-gradient(135deg, #722ed1, #9254de);
}
.space-node.service::before {
    background: linear-gradient(45deg, #722ed1, #9254de, #722ed1);
}

.space-node.center {
    background: rgba(22,119,255,0.8);
    backdrop-filter: blur(10px);
    width: 100px;
    height: 100px;
    font-size: 14px;
    z-index: 4;
    grid-column: 2;
    grid-row: 2;
}

.space-node.center .space-node-icon {
    font-size: 24px;
    margin-bottom: 6px;
}

.space-node.provider:nth-child(5) {
    grid-column: 1;
    grid-row: 1;
}

.space-node.provider:nth-child(6) {
    grid-column: 3;
    grid-row: 1;
}

.space-node.user {
    grid-column: 1;
    grid-row: 3;
}

.space-node.service {
    grid-column: 3;
    grid-row: 3;
}

/* 悬停提示框 */
.node-tooltip {
    position: absolute;
    background: 
        linear-gradient(135deg, 
            rgba(15, 23, 42, 0.95) 0%, 
            rgba(30, 41, 59, 0.95) 100%);
    color: #ffffff;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 13px;
    line-height: 1.4;
    max-width: 160px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    box-shadow: 
        0 8px 24px rgba(0,0,0,0.25),
        0 4px 12px rgba(59, 130, 246, 0.15),
        inset 0 1px 0 rgba(255,255,255,0.1);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255,255,255,0.15);
    font-weight: 500;
    white-space: nowrap;
    /* 默认位置在节点正下方 */
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
}

.node-tooltip::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid rgba(15, 23, 42, 0.95);
}

/* 为不同位置的节点调整tooltip位置 */
.space-node.provider:nth-child(5) .node-tooltip {
    /* 左上角节点，tooltip显示在右侧 */
    top: 50%;
    left: calc(100% + 8px);
    transform: translateY(-50%);
}

.space-node.provider:nth-child(5) .node-tooltip::before {
    top: 50%;
    left: -6px;
    transform: translateY(-50%);
    border-left: 6px solid rgba(15, 23, 42, 0.95);
    border-right: none;
    border-bottom: 6px solid transparent;
    border-top: 6px solid transparent;
}

.space-node.provider:nth-child(6) .node-tooltip {
    /* 右上角节点，tooltip显示在左侧 */
    top: 50%;
    right: calc(100% + 8px);
    left: auto;
    transform: translateY(-50%);
}

.space-node.provider:nth-child(6) .node-tooltip::before {
    top: 50%;
    right: -6px;
    left: auto;
    transform: translateY(-50%);
    border-right: 6px solid rgba(15, 23, 42, 0.95);
    border-left: none;
    border-bottom: 6px solid transparent;
    border-top: 6px solid transparent;
}

.space-node.user .node-tooltip {
    /* 左下角节点，tooltip显示在右侧 */
    top: 50%;
    left: calc(100% + 8px);
    transform: translateY(-50%);
}

.space-node.user .node-tooltip::before {
    top: 50%;
    left: -6px;
    transform: translateY(-50%);
    border-left: 6px solid rgba(15, 23, 42, 0.95);
    border-right: none;
    border-bottom: 6px solid transparent;
    border-top: 6px solid transparent;
}

.space-node.service .node-tooltip {
    /* 右下角节点，tooltip显示在左侧 */
    top: 50%;
    right: calc(100% + 8px);
    left: auto;
    transform: translateY(-50%);
}

.space-node.service .node-tooltip::before {
    top: 50%;
    right: -6px;
    left: auto;
    transform: translateY(-50%);
    border-right: 6px solid rgba(15, 23, 42, 0.95);
    border-left: none;
    border-bottom: 6px solid transparent;
    border-top: 6px solid transparent;
}

.space-node:hover .node-tooltip {
    opacity: 1;
    visibility: visible;
}

.space-node.active {
    animation: nodeActive 0.6s ease-out;
}

@keyframes nodeActive {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}
.enter-btn {
    display: block;
    margin: 48px auto 0 auto;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: #ffffff;
    border: none;
    border-radius: 16px;
    padding: 20px 48px;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4);
    text-decoration: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.enter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}

.enter-btn:hover::before {
    left: 100%;
}

.enter-btn:hover {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    transform: translateY(-4px);
    box-shadow: 0 20px 48px rgba(59, 130, 246, 0.6);
}

.intro-section {
    background: 
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.9) 0%, 
            rgba(248, 250, 252, 0.85) 50%, 
            rgba(255, 255, 255, 0.9) 100%),
        url('https://superchipdata.com/Templates/xingchao/images/subbg1.png');
    background-size: 100% 100%, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    border-radius: 20px;
    padding: 32px 28px;
    margin-bottom: 32px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.08), 0 6px 24px rgba(0,0,0,0.04);
    border: 1px solid rgba(255,255,255,0.6);
    backdrop-filter: blur(15px);
    position: relative;
    overflow: hidden;
}

.intro-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(2deg); }
}

.intro-title {
    font-size: 28px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 16px;
    text-align: center;
    background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-content {
    font-size: 16px;
    line-height: 1.7;
    color: #64748b;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    font-weight: 500;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.feature-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 16px;
    padding: 20px 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border: 1px solid rgba(255,255,255,0.8);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    min-height: 140px;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    transition: width 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 16px 40px rgba(0,0,0,0.15);
}

.feature-card:hover::before {
    width: 8px;
}

.feature-image {
    width: 100%;
    height: 80px;
    border-radius: 12px;
    margin-bottom: 16px;
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-image {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.feature-title {
    font-size: 14px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 8px;
}

.feature-desc {
    color: #64748b;
    font-size: 11px;
    line-height: 1.5;
}

.use-cases-section {
    background: 
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.9) 0%, 
            rgba(248, 250, 252, 0.85) 50%, 
            rgba(255, 255, 255, 0.9) 100%),
        url('https://superchipdata.com/Templates/xingchao/images/subbg1.png');
    background-size: 100% 100%, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    border-radius: 24px;
    padding: 40px 36px;
    margin-bottom: 32px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1), 0 8px 32px rgba(0,0,0,0.06);
    border: 1px solid rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.use-cases-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6, #10b981, #8b5cf6, #ec4899);
    border-radius: 24px 24px 0 0;
}

.section-header {
    font-size: 28px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 12px;
    text-align: center;
    background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.section-subtitle {
    color: #64748b;
    font-size: 16px;
    text-align: center;
    margin-bottom: 32px;
    line-height: 1.6;
    font-weight: 500;
}

.use-cases-grid {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding-bottom: 16px;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 #f1f5f9;
}

.use-cases-grid::-webkit-scrollbar {
    height: 10px;
}

.use-cases-grid::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 6px;
}

.use-cases-grid::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, #3b82f6, #10b981);
    border-radius: 6px;
}

.use-cases-grid::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(90deg, #1d4ed8, #059669);
}

.use-case-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    border: 1px solid rgba(255,255,255,0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    flex: 0 0 280px;
    min-width: 280px;
    backdrop-filter: blur(10px);
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    transition: width 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 48px rgba(0,0,0,0.15);
}

.use-case-card:hover::before {
    width: 8px;
}

.use-case-image {
    height: 160px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.use-case-image::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

.use-case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    position: relative;
}

.use-case-content {
    padding: 24px 20px;
}

.use-case-title {
    font-size: 18px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 10px;
}

.use-case-desc {
    color: #64748b;
    font-size: 14px;
    line-height: 1.6;
}

.company-info {
    background: 
        linear-gradient(135deg, 
            rgba(255, 255, 255, 0.9) 0%, 
            rgba(248, 250, 252, 0.85) 50%, 
            rgba(255, 255, 255, 0.9) 100%),
        url('https://superchipdata.com/Templates/xingchao/images/subbg1.png');
    background-size: 100% 100%, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    border-radius: 20px;
    padding: 32px 28px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.08), 0 6px 24px rgba(0,0,0,0.04);
    border: 1px solid rgba(255,255,255,0.6);
    backdrop-filter: blur(15px);
    position: relative;
    overflow: hidden;
}

.company-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6, #10b981, #8b5cf6, #ec4899);
    border-radius: 24px 24px 0 0;
}

.company-title {
    font-size: 22px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.company-content {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 16px;
}

.company-stats {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.stat-item {
    text-align: center;
    padding: 20px 16px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.8);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.12);
}

.stat-number {
    font-size: 28px;
    font-weight: 900;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 14px;
    color: #64748b;
    font-weight: 600;
}

/* 移动端响应式样式 */
@media (max-width: 768px) {
    .card,
    .intro-section,
    .use-cases-section,
    .company-info {
        background-size: 100% 100%, cover;
        background-position: center, center;
        padding: 24px 20px;
        margin-bottom: 24px;
    }
    
    .tabs {
        background-size: 100% 100%, cover;
        background-position: center, center;
        padding: 8px;
        margin-bottom: 32px;
    }
    
    .intro-section {
        padding: 24px 20px;
        margin-bottom: 24px;
    }
    
    .use-cases-section {
        padding: 32px 24px;
        margin-bottom: 24px;
    }
    
    .company-info {
        padding: 24px 20px;
        margin-top: 24px;
    }
    
    .intro-title {
        font-size: 24px;
        margin-bottom: 16px;
    }
    
    .intro-content {
        font-size: 16px;
        line-height: 1.6;
    }
}