/* ACE3 Website - Databricks Style Framework */
/* 完全重构的现代化CSS架构 */

/* ===== CSS RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #2D3748;
    background-color: #FFFFFF;
    font-size: 16px;
}

/* ===== TYPOGRAPHY SYSTEM ===== */
.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: #1A202C;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    color: #4A5568;
    margin-bottom: 2rem;
    max-width: 600px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: #1A202C;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #4A5568;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #FF6B35;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    text-align: center;
}

/* ===== LAYOUT SYSTEM ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.section-dark {
    background-color: #1A202C;
    color: #FFFFFF;
}

.section-light {
    background-color: #F7FAFC;
}

/* ===== GRID SYSTEM ===== */
.grid {
    display: grid;
    gap: 2rem;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

/* ===== BUTTON SYSTEM ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 140px;
}

.btn-primary {
    background-color: #FF6B35;
    color: #FFFFFF;
    border-color: #FF6B35;
}

.btn-primary:hover {
    background-color: #E55A2B;
    border-color: #E55A2B;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.3);
}

.btn-secondary {
    background-color: #1A202C;
    color: #FFFFFF;
    border-color: #1A202C;
}

.btn-secondary:hover {
    background-color: #2D3748;
    border-color: #2D3748;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 32, 44, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: #FF6B35;
    border-color: #FF6B35;
}

.btn-outline:hover {
    background-color: #FF6B35;
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.3);
}

/* ===== CARD SYSTEM ===== */
.card {
    background: #FFFFFF;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #E2E8F0;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, #FF6B35, #FF8A65);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: #FFFFFF;
    font-size: 1.5rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1A202C;
    margin-bottom: 1rem;
}

.card-description {
    color: #4A5568;
    line-height: 1.6;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== GEOMETRIC SHAPES ===== */
.geometric-shape {
    position: absolute;
    border-radius: 1rem;
}

.shape-triangle {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #FF6B35, #FF8A65);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    top: 20%;
    right: 20%;
}

.shape-circle {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #FF6B35, #FF8A65);
    border-radius: 50%;
    bottom: 30%;
    left: 10%;
}

.shape-square {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #FF6B35, #FF8A65);
    border-radius: 1rem;
    top: 50%;
    right: 10%;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #E2E8F0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.navbar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #FF6B35;
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.navbar-nav a {
    color: #2D3748;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav a:hover {
    color: #FF6B35;
}

/* ===== FEATURE TAGS ===== */
.feature-tags {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.feature-tag {
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #FFFFFF;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.feature-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tag-ai { background: linear-gradient(135deg, #FF6B35, #FF8A65); }
.tag-governance { background: linear-gradient(135deg, #9F7AEA, #B794F6); }
.tag-warehousing { background: linear-gradient(135deg, #38B2AC, #4FD1C7); }
.tag-etl { background: linear-gradient(135deg, #ED64A6, #F687B3); }
.tag-sharing { background: linear-gradient(135deg, #805AD5, #9F7AEA); }
.tag-orchestration { background: linear-gradient(135deg, #FF6B35, #FF8A65); }

/* ===== PRODUCT DEMO SECTION ===== */
.product-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.demo-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #1A202C;
    margin-bottom: 1.5rem;
}

.demo-features {
    list-style: none;
    margin: 2rem 0;
}

.demo-features li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    color: #4A5568;
}

.demo-features li::before {
    content: "✓";
    color: #FF6B35;
    font-weight: bold;
    margin-right: 0.75rem;
    font-size: 1.2rem;
}

.demo-image {
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.demo-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== CUSTOMER STORIES ===== */
.customer-stories {
    position: relative;
    overflow: hidden;
}

.stories-carousel {
    display: flex;
    gap: 2rem;
    transition: transform 0.5s ease;
}

.story-card {
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    background: #FFFFFF;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.story-logo {
    height: 2rem;
    margin-bottom: 1.5rem;
}

.story-metric {
    font-size: 2.5rem;
    font-weight: 700;
    color: #FF6B35;
    margin-bottom: 0.5rem;
}

.story-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1A202C;
    margin-bottom: 1rem;
}

.story-link {
    color: #FF6B35;
    text-decoration: none;
    font-weight: 500;
}

.story-link:hover {
    text-decoration: underline;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content,
    .product-demo,
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .navbar-nav {
        display: none;
    }
    
    .feature-tags {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    
    .story-card {
        min-width: 300px;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.highlight {
    color: #FF6B35;
}

.max-w-4xl {
    max-width: 56rem;
    margin-left: auto;
    margin-right: auto;
}
/* Logo scaling for compact navbar */
.navbar-logo img {
    transform: scale(2.0);
    transform-origin: center;
}
/* 防止logo遮挡所有页面内容 */
body {
    padding-top: 50px !important;
}

.hero-section {
    padding-top: 50px !important;
}

main {
    margin-top: 50px !important;
}

/* 针对所有主要内容区域 */
.container {
    margin-top: 50px !important;
}

/* 针对页面标题 */
h1:first-of-type {
    margin-top: 50px !important;
}

/* 确保所有section都有足够间距 */
section {
    margin-top: 50px !important;
}