/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

:root {
    /* EvoMap-inspired: pure black + cyan blue */
    --bg-dark: #000000;
    --bg-darker: #000000;
    --bg-card: #0A0A0A;
    --bg-card-hover: #111111;
    --text-primary: #EDEDED;
    --text-secondary: rgba(237, 237, 237, 0.55);
    --text-muted: rgba(237, 237, 237, 0.35);
    --accent-primary: #38BDF8;
    --accent-secondary: #0EA5E9;
    --accent-gradient: linear-gradient(135deg, #38BDF8 0%, #2563EB 100%);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-medium: rgba(255, 255, 255, 0.14);
    --accent-gold: #38BDF8;
    --accent-gold-glow: rgba(56, 189, 248, 0.15);
}

/* EvoMap-style display font: Outfit */
@font-face {
    font-family: 'Outfit';
    src: url('assets/fonts/Outfit-500.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Outfit';
    src: url('assets/fonts/Outfit-600.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Outfit';
    src: url('assets/fonts/Outfit-700.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    /* justify-content: space-between; */
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    gap: 2.25rem;            /* 微调标签之间的间距，让呼吸感更舒适 */
    
    /* 核心黑魔法：自动吞掉左侧剩余的所有空间，从而将自身及右侧的 nav-actions 整体推向右边 */
    margin-left: auto;       
    
    /* 设置菜单与右侧“登录/开始使用”按钮组之间的黄金隔离带 */
    margin-right: 3rem;     
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s ease, transform 0.2s ease;
    white-space: nowrap;     /* 防止屏幕缩放时文字换行折叠 */
}

.nav-menu a:hover {
    color: var(--text-primary);
    transform: translateY(-0.5px); /* 悬停时极其轻微地向上浮动，增加灵动感 */
}

.nav-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-shrink: 0;          /* 确保高亮按钮在任何情况下都不会被挤压变形 */
}

.nav-btn-secondary,
.nav-btn-primary {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

.nav-btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--border-medium);
}

.nav-btn-primary {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border: none;
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.2);
}

.nav-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(56, 189, 248, 0.3);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 0 6rem;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-img-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    /* 引入图片，并加上一层从深色到透明的渐变，让图片完美融入暗黑底色 */
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.9) 100%), 
                url('assets/images/head_background.png') no-repeat center center;
    background-size: cover;
    /* 关键：控制透明度在 0.15 ~ 0.25 之间，既能看出精美图案，又绝对不会抢走文字的视线 */
    opacity: 1; 
    z-index: 1;
    pointer-events: none;
}

/* --- 保持你原本的 .grid-overlay 和 .gradient-orb 不变，只需确保它们的 z-index --- */
.grid-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
    z-index: 2; /* 让网格线隐约浮在图片上方，更有建筑设计图纸感 */
}
/* .grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
} */

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #38BDF8 0%, transparent 70%);
    top: -250px;
    left: -150px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #0EA5E9 0%, transparent 70%);
    top: -150px;
    right: -100px;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.55rem 1.2rem;
    
    /* 1. 解决位置尴尬：加大底部间距，把下方的标题往下推，拉开层次 */
    margin-bottom: 2.5rem; 
    
    /* 2. 增强对比度：使用较暗的半透明底色，并叠加毛玻璃模糊（Backdrop Filter）
       这相当于在密集的背景线条上打了一层“遮罩”，让文字瞬间清晰 */
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    
    /* 3. 边框微调：使用品牌蓝紫色并带有一点点点缀感 */
    border: 1px solid rgba(56, 189, 248, 0.4);
    border-radius: 100px;
    
    /* 4. 文字提亮：从次要文本色改为纯白高亮 */
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

/* 3. 标签文字：高亮冰蓝色，自带一丝丝防辐射背光感 */
.badge-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: #7DD3FC; /* 冰蓝色 */
    text-shadow: 0 0 6px rgba(147, 197, 253, 0.5);
    letter-spacing: 0.05em;
}

/* 鼠标悬停时的小交互 */
.hero-badge:hover {
    background: rgba(6, 24, 54, 0.75);
    box-shadow: 
        0 0 18px rgba(56, 189, 248, 0.6), 
        inset 0 0 10px rgba(56, 189, 248, 0.4);
    transform: translateY(-1px);
    cursor: pointer;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #38BDF8;
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 8px #38BDF8;
    animation: neonGlow 2s infinite ease-in-out;
}

/* 强效霓虹脉冲波动画 */
@keyframes neonGlow {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7), 0 0 4px #38BDF8;
    }
    70% {
        transform: scale(1);
        /* 向外扩散并淡出的光环 */
        box-shadow: 0 0 0 8px rgba(56, 189, 248, 0), 0 0 8px #38BDF8;
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(56, 189, 248, 0), 0 0 4px #38BDF8;
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    /* letter-spacing: -0.02em; */
    letter-spacing: -0.01em;
    font-family: 'Inter', -apple-system, sans-serif;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
/* 升级：预约演示按钮可以加入淡淡的金光，暗合神殿油灯下的知识探寻 */
.btn-primary {
    background: var(--accent-gradient);
    position: relative;
    overflow: hidden;
}
.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: 0.5s;
    opacity: 0;
}
.btn-primary:hover::after {
    opacity: 1;
    transform: translate(50%, 50%) rotate(45deg);
}

/* .btn-primary {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border: none;
    box-shadow: 0 8px 24px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(56, 189, 248, 0.35);
} */

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 1.5rem 2rem;
    background: rgba(19, 19, 24, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    max-width: 700px;
    margin: 0 auto;
    flex-wrap: wrap;
}

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

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-subtle);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-title .highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Problem Section */
.problem-section {
    padding: 6rem 0;
    position: relative;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.problem-card {
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.problem-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-medium);
    transform: translateY(-4px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(56, 189, 248, 0.1);
    border-radius: 12px;
    color: var(--accent-primary);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.problem-card:hover .card-icon {
    background: rgba(56, 189, 248, 0.2);
    transform: scale(1.1);
}

.card-icon svg {
    width: 32px;
    height: 32px;
}

.card-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.problem-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.problem-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9375rem;
}

/* Technology Section */
.technology-section {
    padding: 6rem 0;
    background: var(--bg-darker);
    position: relative;
}

.tech-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.tech-step {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-subtle);
}

.tech-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.step-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Use Cases Section */
.use-cases-section {
    padding: 6rem 0;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.use-case-card {
    padding: 2.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.use-case-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 20px 60px rgba(56, 189, 248, 0.15);
}

.use-case-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.use-case-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.use-case-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 1rem;
}

.use-case-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.metric {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.metric-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(56, 189, 248, 0.1);
    border-radius: 10px;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.metric-info {
    flex: 1;
    min-width: 0;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.125rem;
}

.metric-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

/* CTA Section */
.cta-section {
    padding: 8rem 0;
    position: relative;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.cta-gradient {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, transparent 70%);
    filter: blur(100px);
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    padding: 4rem 0 2rem;
    background: var(--bg-darker);
    border-top: 1px solid var(--border-subtle);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 0.625rem;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.25rem;
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .tech-step {
        grid-template-columns: 80px 1fr;
        gap: 1.5rem;
    }

    .step-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-actions {
        gap: 0.5rem;
    }

    .nav-btn-secondary,
    .nav-btn-primary {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }

    .hero {
        padding: 8rem 0 4rem;
        min-height: auto;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .stat-divider {
        display: none;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .section-description {
        font-size: 1rem;
    }

    .problem-grid {
        grid-template-columns: 1fr;
    }

    .tech-step {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .use-case-metrics {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .cta-content h2 {
        font-size: 2rem;
    }

    .cta-content p {
        font-size: 1rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .hero-title {
        font-size: 1.875rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .section-title {
        font-size: 1.625rem;
    }

    .cta-content h2 {
        font-size: 1.75rem;
    }

    .cta-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-large {
        width: 100%;
    }
}

/* Hero Visual Illustration */
.hero-visual {
    margin-top: 4rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.hero-illustration {
    width: 100%;
    height: auto;
    max-height: 500px;
}

.particle {
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.industry-node {
    animation: float 4s ease-in-out infinite;
}

.industry-node:nth-of-type(2) {
    animation-delay: 0.5s;
}

.industry-node:nth-of-type(3) {
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.knowledge-base {
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.target-node {
    animation: pulse-scale 2s ease-in-out infinite;
}

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

/* Tech Step Visual */
.step-visual {
    margin-top: 1.5rem;
    padding: 2rem;
    background: rgba(19, 19, 24, 0.4);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
}

.step-visual svg {
    width: 100%;
    height: auto;
}

/* Use Case Visual */
.use-case-visual {
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.use-case-visual svg {
    width: 100%;
    max-width: 200px;
    height: auto;
}


.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block; /* 手机端显示 */
    }
    /* 配合后续你的全局移动端菜单展开样式 */
}

/* ==========================================================
   塞莎特知识流：色彩减淡光束扫描 (Mix-Blend-Mode Scan)
   ========================================================== */
.hero-scan-stream {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 2;
    pointer-events: none;
    
    background: linear-gradient(
        110deg,
        transparent 30%,
        rgba(56, 189, 248, 0.15) 40%,
        rgba(56, 189, 248, 0.45) 50%,
        rgba(37, 99, 235, 0.15) 60%,
        transparent 70%
    );
    background-size: 300% 100%;
    
    mix-blend-mode: color-dodge; 
    animation: waveScan 8s linear infinite;
}

@keyframes waveScan {
    0% {
        background-position: 300% 0;
    }
    100% {
        background-position: -100% 0;
    }
}

/* ==========================================================
   Stripe 级 SVG 叠加流光轨 (Vector Flow Lines)
   ========================================================== */
.hero-vector-tracks {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 2;
    pointer-events: none;
    opacity: 0.6; /* 淡淡的浮在背景图上，不喧宾夺主 */
}

.hero-vector-tracks svg {
    width: 100%;
    height: 100%;
}

/* 虚线流动特效 */
.pulse-line {
    stroke-dasharray: 150 450; /* 150px长的发光线段，450px的间距 */
    stroke-dashoffset: 600;
    animation: flowPulse 6s linear infinite;
}

/* 错开每条知识流的速度和延迟，模拟真实的异步数据传输 */
.line-fast {
    animation-duration: 4.5s;
}

.line-medium {
    animation-duration: 7s;
    animation-delay: -1.5s;
}

.line-slow {
    animation-duration: 10s;
    animation-delay: -3s;
}

@keyframes flowPulse {
    0% {
        stroke-dashoffset: 600; /* 从一端注入 */
    }
    100% {
        stroke-dashoffset: -600; /* 流向另一端 */
    }
}

/* EvoMap black + blue emphasis */
.hero-title {
    color: #EDEDED;
}

.gradient-text {
    background: linear-gradient(135deg, #7DD3FC 0%, #38BDF8 45%, #2563EB 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu a:hover,
.footer-column a:hover {
    color: #38BDF8;
}

.section-title {
    color: #EDEDED;
}

.btn-primary,
.nav-btn-primary {
    background: linear-gradient(135deg, #38BDF8 0%, #2563EB 100%);
    color: #000000;
    box-shadow: 0 0 24px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover,
.nav-btn-primary:hover {
    box-shadow: 0 0 32px rgba(56, 189, 248, 0.4);
}


/* Brand logo — EvoMap Outfit style */
.logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    display: block;
    border-radius: 4px;
}

.logo-text {
    font-family: 'Outfit', Inter, -apple-system, sans-serif !important;
    font-weight: 600 !important;
    font-style: normal !important;
    font-size: 1.25rem !important;
    letter-spacing: 0.04em;
    line-height: 1;
    text-transform: none !important;
    color: #EDEDED !important;
    background: none !important;
    -webkit-background-clip: initial !important;
    -webkit-text-fill-color: #EDEDED !important;
    background-clip: initial !important;
    filter: none !important;
}

.nav-logo .logo-text,
.footer-logo .logo-text {
    font-size: 1.25rem !important;
}



/* EvoMap-like display typography */
.hero-title,
.section-title,
.cta-content h2 {
    font-family: 'Outfit', Inter, -apple-system, sans-serif;
    font-weight: 500;
    letter-spacing: 0.02em;
}