/* Hero Section - Clean Style */
.hero-section-clean {
    background-color: #ffffff;
    padding: 120px 0 100px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.hero-icon-wrapper {
    margin-bottom: 40px;
}

.hero-icon {
    font-size: 8rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    color: #2c3e50;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-subtitle {
        font-size: 1.5rem;
    }
    .hero-icon {
        font-size: 5rem;
    }
}


.hero-subtitle {
    font-size: 2.5rem;
    color: #667eea;
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.hero-description {
    font-size: 1.5rem;
    color: #555;
    margin-bottom: 25px;
    font-weight: 500;
}

.hero-description-detail {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    margin-top: 50px;
}

.hero-buttons .btn {
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Mobile: stack hero buttons, remove visual "pile up" */
@media (max-width: 576px) {
    .hero-section-clean {
        padding: 90px 0 70px 0;
    }

    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
        padding: 14px 18px;
        font-size: 1.1rem;
    }

    .hero-buttons .btn.me-3 {
        margin-right: 0 !important;
    }
}

/* Company Introduction Section */
.company-intro-section {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.03) 100%),
        url('data:image/svg+xml;utf8,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(102,126,234,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    padding: 100px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.company-intro-title {
    font-size: 3.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.company-intro-content {
    font-size: 1.3rem;
    line-height: 2;
    color: #2c3e50;
    max-width: 1000px;
    margin: 0 auto;
}

.company-intro-content .lead-text {
    font-size: 1.4rem;
    margin-bottom: 40px;
    font-weight: 500;
}

.company-intro-content .highlight-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 40px 0;
    padding: 30px 40px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
    border-left: 5px solid #667eea;
    border-radius: 8px;
    line-height: 2;
}

.highlight-badge {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    font-size: 1.15em;
}

/* Workflow Section */
.workflow-section {
    background-color: #f8f9fa;
    padding: 100px 0;
}

.workflow-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: #2c3e50;
}

.workflow-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 60px;
}

.workflow-path {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.08);
    height: 100%;
}

.workflow-path-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 3px solid #667eea;
    color: #2c3e50;
}

.workflow-step {
    position: relative;
    padding-left: 40px;
    margin-bottom: 25px;
}

.workflow-step::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
}

.workflow-step::after {
    content: '';
    position: absolute;
    left: 15px;
    top: 20px;
    width: 2px;
    height: calc(100% + 5px);
    background: linear-gradient(to bottom, #667eea, rgba(102, 126, 234, 0.2));
}

.workflow-step:last-child::after {
    display: none;
}

.workflow-step-title {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.workflow-step-desc {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.workflow-branch {
    background: rgba(102, 126, 234, 0.05);
    border-left: 3px solid #667eea;
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 4px;
}

.workflow-branch-title {
    font-weight: 600;
    color: #667eea;
    margin-bottom: 10px;
}

/* Cinematic Stacking - 电影级沉浸式排版 (Light Mode Harmonized) */
:root {
    --cine-bg: #f8f9fa;
    /* Harmonized with Hero */
    --cine-text: #2c3e50;
    --cine-accent-gold: #FFD700;
    --cine-accent-cyan: #00cdac;
    --cine-accent-purple: #BC13FE;
    --cine-card-bg: #ffffff;
    --cine-glass-border: 1px solid rgba(0, 0, 0, 0.05);
}

body {
    background-color: #f8f9fa;
}

/* 宣言板块 - 纯文字冲击 */
.manifesto-section {
    background-color: var(--cine-bg);
    color: var(--cine-text);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.manifesto-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 30px;
    /* Primary Brand Gradient */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.manifesto-text {
    font-size: 1.2rem;
    color: #666;
    /* Darker for readability */
    max-width: 700px;
    line-height: 1.6;
}

/* 核心：堆叠卡片容器 */
.stack-section {
    background-color: var(--cine-bg);
    padding-bottom: 150px;
    /* Space for last card */
}

.stack-card-wrapper {
    position: sticky;
    top: 100px;
    /* Sticky offset */
    margin-bottom: 100px;
    /* Spacing between stacks visually */
    display: flex;
    justify-content: center;
}

.stack-card {
    width: 100%;
    max-width: 1100px;
    min-height: 400px;
    height: auto;
    /* Changed from fixed 600px */
    border-radius: 40px;
    background: var(--cine-card-bg);
    border: var(--cine-glass-border);
    /* High-end light shadow */
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.1), 0 0 0 1px rgba(255, 255, 255, 0.5);
    padding: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    overflow: hidden;
    position: relative;
    transition: transform 0.5s ease;
}

@media (max-width: 991px) {
    .stack-card {
        flex-direction: column;
        padding: 40px 20px;
        text-align: center;
        border-radius: 24px;
        min-height: auto;
    }
    .stack-card-wrapper {
        position: relative !important;
        top: 0 !important;
        margin-bottom: 30px;
    }
    .stack-title {
        font-size: 2.2rem;
    }
    .stack-content {
        padding-right: 0;
    }
    .stack-icon-huge {
        font-size: 5rem;
        margin-top: 20px;
    }
}


/* Card Themes - Subtle Gradients on White */
.card-theme-gold {
    background: radial-gradient(circle at 100% 0%, rgba(255, 215, 0, 0.05) 0%, transparent 40%),
        #ffffff;
}

.card-theme-cyan {
    background: radial-gradient(circle at 100% 0%, rgba(0, 205, 172, 0.05) 0%, transparent 40%),
        #ffffff;
}

.card-theme-purple {
    background: radial-gradient(circle at 100% 0%, rgba(188, 19, 254, 0.05) 0%, transparent 40%),
        #ffffff;
}


.stack-content {
    flex: 1;
    padding-right: 60px;
    z-index: 2;
}

.stack-visual {
    flex: 1;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Card Typography */
.stack-number {
    font-size: 1.6rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: #999;
    margin-bottom: 20px;
    display: block;
    font-weight: 700;
}

.stack-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--cine-text);
    margin-bottom: 30px;
    line-height: 1.1;
}

.stack-desc {
    font-size: 1.25rem;
    color: #666;
    line-height: 1.8;
}

/* Visual Abstract Shapes (CSS Only) */
.abstract-shape {
    width: 300px;
    height: 300px;
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    /* Reduced opacity for light mode */
    animation: pulseGlow 5s infinite alternate;
}

.shape-gold {
    background: #FFD700;
}

.shape-cyan {
    background: #00cdac;
}

.shape-purple {
    background: #BC13FE;
}

.stack-icon-huge {
    font-size: 8rem;
    position: relative;
    z-index: 10;
    /* Gradient Text for Icon */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 10px 20px rgba(102, 126, 234, 0.2));
}

@keyframes pulseGlow {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }

    100% {
        transform: scale(1.2);
        opacity: 0.9;
    }
}

/* Stats Integration strip (Light Mode) */
.trust-strip {
    background: #ffffff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 80px 0;
    color: var(--cine-text);
}

.trust-item {
    text-align: center;
}

.trust-num {
    font-size: 3rem;
    font-weight: 700;
    /* Darker metallic gradient */
    background: linear-gradient(90deg, #2c3e50, #4ca1af);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.trust-label {
    color: #888;
    margin-top: 10px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

@media (max-width: 991px) {
    .stack-card {
        flex-direction: column;
        height: auto;
        padding: 40px;
    }

    .stack-content {
        padding-right: 0;
        margin-bottom: 40px;
    }

    .manifesto-title {
        font-size: 3rem;
    }
}