/* 基础设置与科技感颜色变量 */
:root {
    --color-dark-bg: #050a14;
    --color-primary: #00e0ff; /* 科技蓝/青色 */
    --color-secondary: #ff00c8; /* 荧光紫/品红 */
    --color-light-text: #e0f7fa;
    --color-dim-text: #90a4ae;
    --font-heading: 'Roboto', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-dark-bg);
    color: var(--color-light-text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background: rgba(5, 10, 20, 0.85); /* 半透明背景 */
    backdrop-filter: blur(8px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 224, 255, 0.1);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
}

.sub-logo {
    font-size: 0.9rem;
    color: var(--color-secondary);
    margin-left: 5px;
}

.navbar a {
    color: var(--color-light-text);
    text-decoration: none;
    margin-left: 30px;
    font-weight: 400;
    transition: color 0.3s;
}

.navbar a:hover {
    color: var(--color-primary);
}

.cta-button {
    background: var(--color-primary);
    color: var(--color-dark-bg) !important;
    padding: 8px 18px;
    border-radius: 5px;
    font-weight: 700;
    transition: background 0.3s, transform 0.2s;
}

.cta-button:hover {
    background: #00ffff;
    transform: translateY(-2px);
}

/* 全屏布局 */
.full-section {
    min-height: 100vh;
    padding: 100px 5% 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

h1, h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

h1 {
    font-size: 4rem;
    color: var(--color-primary);
    text-shadow: 0 0 10px rgba(0, 224, 255, 0.5);
}

h2 {
    font-size: 3rem;
    color: var(--color-light-text);
    border-bottom: 2px solid var(--color-secondary);
    padding-bottom: 10px;
    margin-top: 50px;
}

.section-desc {
    font-size: 1.2rem;
    color: var(--color-dim-text);
    margin-bottom: 40px;
}

/* 首页 Hero Section */
.hero-section {
    background: radial-gradient(circle at top, #0c1a2c, var(--color-dark-bg) 70%);
    min-height: 100vh;
}

.content-wrapper {
    max-width: 900px;
    z-index: 10;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--color-light-text);
    margin-bottom: 40px;
}

.key-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: rgba(0, 224, 255, 0.1);
    border: 1px solid var(--color-primary);
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 700;
    font-family: var(--font-mono);
    box-shadow: 0 0 15px rgba(0, 224, 255, 0.3);
    transition: background 0.3s;
}

.feature-card:hover {
    background: rgba(0, 224, 255, 0.2);
}

.main-cta-btn {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    color: var(--color-dark-bg);
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 0 20px rgba(0, 224, 255, 0.5);
}

.main-cta-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 224, 255, 0.8);
}

/* 全息显示模拟 (需替换为真实图片或 CSS 动画) */
.holographic-display-mockup {
    position: absolute;
    bottom: 5%;
    right: 50%;
    transform: translateX(50%);
    width: 80%;
    height: 40vh;
    background: rgba(0, 224, 255, 0.1);
    border: 2px dashed rgba(0, 224, 255, 0.3);
    border-radius: 10px;
    z-index: 5;
    /* 模拟光晕效果 */
    box-shadow: 0 0 50px rgba(0, 224, 255, 0.4), inset 0 0 30px rgba(0, 224, 255, 0.2);
}

/* 技术核心 Section */
.tech-section {
    background: var(--color-dark-bg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin-top: 50px;
}

.tech-item {
    background: #0f1c30;
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    border-left: 5px solid var(--color-secondary);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s, border-left-color 0.3s;
}

.tech-item:hover {
    transform: translateY(-10px);
    border-left-color: var(--color-primary);
}

.tech-item h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
    font-family: var(--font-mono);
}

.tech-tag {
    display: inline-block;
    margin-top: 15px;
    padding: 5px 10px;
    background: rgba(255, 0, 200, 0.1);
    color: var(--color-secondary);
    border-radius: 3px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

/* 应用场景 Section */
.apps-section {
    background: #091524;
}

.app-card-container {
    display: flex;
    gap: 30px;
    max-width: 1000px;
}

.app-card {
    flex: 1;
    background: #142237;
    padding: 40px 20px;
    border-radius: 10px;
    border: 1px solid rgba(0, 224, 255, 0.2);
    transition: background 0.3s;
}

.app-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.app-card:hover {
    background: #1a2c45;
}

/* 产品规格 Section */
.specs-section {
    background: var(--color-dark-bg);
}

.specs-section table {
    width: 80%;
    max-width: 1000px;
    border-collapse: collapse;
    margin-top: 40px;
    text-align: left;
    font-family: var(--font-mono);
}

.specs-section th, .specs-section td {
    padding: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.specs-section th {
    background: #0f1c30;
    color: var(--color-secondary);
    font-weight: 700;
}

.specs-section tr:hover {
    background: #0f1c30;
}

/* 订购/体验 Section */
.order-section {
    background: radial-gradient(circle at bottom, #142237, var(--color-dark-bg) 70%);
}

.order-cta-box {
    background: #0f1c30;
    padding: 50px;
    border-radius: 15px;
    border: 2px solid var(--color-primary);
    max-width: 600px;
    margin-top: 40px;
    box-shadow: 0 0 40px rgba(0, 224, 255, 0.4);
}

.order-cta-box h3 {
    color: var(--color-secondary);
    font-size: 2rem;
    margin-bottom: 15px;
}

.order-cta-box p {
    color: var(--color-dim-text);
    margin-bottom: 30px;
}

.order-form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.order-form input[type="email"] {
    flex-grow: 1;
    padding: 12px;
    border: none;
    border-radius: 5px;
    background: #050a14;
    color: var(--color-light-text);
    border: 1px solid var(--color-dim-text);
}

.order-form input[type="email"]::placeholder {
    color: var(--color-dim-text);
}

.secondary-cta-btn {
    display: inline-block;
    color: var(--color-primary);
    text-decoration: none;
    border: 1px solid var(--color-primary);
    padding: 10px 25px;
    border-radius: 5px;
    transition: background 0.3s;
}

.secondary-cta-btn:hover {
    background: rgba(0, 224, 255, 0.1);
}

/* 页脚 */
.footer {
    background: #000000;
    padding: 40px 5%;
    text-align: center;
    border-top: 5px solid var(--color-secondary);
    font-size: 0.9rem;
}

.footer-content {
    display: flex;
    justify-content: space-around;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-info, .legal-info {
    text-align: left;
}

.footer h4 {
    color: var(--color-primary);
    margin-bottom: 10px;
}

.footer a {
    color: var(--color-dim-text);
    text-decoration: none;
    transition: color 0.3s;
}

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

.copyright {
    margin-top: 20px;
    color: var(--color-dim-text);
}

/* 友情链接 */
.friendship-links {
    padding: 20px 0;
    text-align: center;
}

.friendship-links h4 {
    color: var(--color-secondary);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.friendship-links p a {
    margin: 0 15px;
    display: inline-block;
    white-space: nowrap;
    color: #00e0ff;
    font-family: var(--font-mono);
}

.friendship-links p a:hover {
    color: #ff00c8;
    text-decoration: underline;
}

/* 媒体查询 - 响应式设计 */
@media (max-width: 992px) {
    h1 {
        font-size: 3rem;
    }
    h2 {
        font-size: 2.5rem;
    }
    .tech-grid {
        grid-template-columns: 1fr;
    }
    .app-card-container {
        flex-direction: column;
    }
    .specs-section table {
        width: 100%;
    }
}

@media (max-width: 600px) {
    .navbar {
        flex-direction: column;
        gap: 10px;
        padding-top: 10px;
    }
    .navbar nav {
        margin-top: 10px;
    }
    .navbar a {
        margin: 0 10px;
    }
    h1 {
        font-size: 2.5rem;
    }
    .key-features {
        flex-direction: column;
    }
    .order-form {
        flex-direction: column;
    }
    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
    .contact-info, .legal-info {
        text-align: center;
    }
    .friendship-links p a {
        display: block;
        margin: 10px 0;
    }
}