:root {
    --primary-color: #6366f1;
    --secondary-color: #a855f7;
    --accent-color: #ff0080;
    --bg-dark: #0a0e27;
    --bg-darker: #050814;
    --bg-card: rgba(15, 23, 42, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --grid-color: rgba(99, 102, 241, 0.1);
    --glow-color: rgba(99, 102, 241, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Grid Background */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Navigation */
nav {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--primary-color);
    box-shadow: 0 0 20px var(--glow-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    box-shadow: 0 0 15px var(--glow-color);
}

/* Ticker */
.ticker {
    background: rgba(15, 23, 42, 0.6);
    padding: 0.8rem 0;
    overflow: hidden;
    white-space: nowrap;
    border-bottom: 1px solid var(--primary-color);
}

.ticker-content {
    display: inline-block;
    animation: scroll 40s linear infinite;
}

.ticker-item {
    display: inline-block;
    margin-right: 3rem;
    font-weight: bold;
}

.up { color: var(--success-color); }
.down { color: var(--danger-color); }

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Hero */
.hero {
    padding: 6rem 0 4rem;
    text-align: center;
}

.hero-ai-avatar {
    width: 150px;
    height: 150px;
    margin: 0 auto 2rem;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    box-shadow: 0 0 40px var(--glow-color);
    animation: float 3s ease-in-out infinite;
}

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

.search-box {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-input {
    padding: 1rem 1.5rem;
    width: 60%;
    max-width: 500px;
    border-radius: 50px;
    border: none;
    background: var(--bg-card);
    color: white;
}

.search-btn {
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 50px;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

/* Sections, Cards, Tables 等原有样式全部保留（这里省略部分以节省空间，但你之前提供的完整版已包含） */
/* 你原来的所有 .features-grid, .stat-card, .table-container, .modal 等样式都保持不变，直接用你提供的完整 bootstrap.min.css 内容 */

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.9);
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.modal.active { display: flex; }

.modal-content {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    width: 90%;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 40px var(--glow-color);
}

/* 其余所有你原来的样式（feature-card, stat-grid, tables-grid, insight-card, cta, footer 等）直接复制你之前提供的完整 bootstrap.min.css 内容即可 */