:root {
    --bg-dark: #0a0a14;
    --bg-darker: #05050a;
    --card-bg: rgba(20, 20, 40, 0.7);
    --card-border: rgba(100, 100, 255, 0.2);
    --neon-blue: #00f2fe;
    --neon-purple: #4facfe;
    --neon-accent: #00cdac;
    --text-light: #ffffff;
    --text-secondary: #a0a0d0;
    --gradient: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    --shadow-glow: 0 0 20px rgba(100, 100, 255, 0.3);
    --glass-bg: rgba(20, 20, 40, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: radial-gradient(circle at 10% 20%, rgba(100, 100, 255, 0.05) 0%, transparent 20%), radial-gradient(circle at 90% 80%, rgba(0, 242, 254, 0.05) 0%, transparent 20%);
}

.material-symbols-rounded {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 5%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
    white-space: nowrap;
}

    .nav-link:hover {
        color: var(--neon-blue);
    }

    .nav-link.active {
        color: var(--neon-blue);
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--gradient);
        transition: width 0.3s ease;
    }

    .nav-link:hover::after, .nav-link.active::after {
        width: 100%;
    }

.cta-button {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

    .cta-button:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-glow);
    }

/* 页面容器 */
.page {
    min-height: 100vh;
    padding-top: 80px;
    display: none;
}

    .page.active {
        display: block;
    }

/* Hero 区域 */
.hero {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 5%;
    text-align: center;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at center, rgba(100, 100, 255, 0.1) 0%, transparent 70%);
        z-index: -1;
    }

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* 动态网格背景 */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(100, 100, 255, 0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(100, 100, 255, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

.floating-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--neon-blue);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--neon-blue);
    animation: float 6s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }

    25% {
        transform: translate(20px, 20px);
    }

    50% {
        transform: translate(0, 40px);
    }

    75% {
        transform: translate(-20px, 20px);
    }
}

/* 通用区域样式 */
.section {
    padding: 6rem 5%;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 产品介绍 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

    .feature-card::before {
        content: '';
        position: absolute;
        top: -2px;
        left: -2px;
        right: -2px;
        bottom: -2px;
        background: var(--gradient);
        z-index: -1;
        border-radius: 17px;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-glow);
        border-color: rgba(100, 100, 255, 0.4);
    }

/* .feature-card:hover::before {
                    opacity: 1;
                }*/

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.feature-card p {
    color: var(--text-secondary);
}

/* 解决方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.solution-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

    .solution-card::before {
        content: '';
        position: absolute;
        top: -2px;
        left: -2px;
        right: -2px;
        bottom: -2px;
        background: var(--gradient);
        z-index: -1;
        border-radius: 17px;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .solution-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-glow);
        border-color: rgba(100, 100, 255, 0.4);
    }

/* .solution-card:hover::before {
                    opacity: 1;
                }*/

.solution-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.solution-card p {
    color: var(--text-secondary);
}

/* 成功案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.case-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

    .case-card::before {
        content: '';
        position: absolute;
        top: -2px;
        left: -2px;
        right: -2px;
        bottom: -2px;
        background: var(--gradient);
        z-index: -1;
        border-radius: 17px;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .case-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-glow);
        border-color: rgba(100, 100, 255, 0.4);
    }

/*                .case-card:hover::before {
                    opacity: 1;
                }*/

.case-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.case-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.case-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 登录表单 */
.login-container {
    max-width: 400px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

    .form-group label {
        margin-bottom: 0.5rem;
        color: var(--text-light);
        font-weight: 500;
    }

    .form-group input {
        padding: 1rem;
        border: 1px solid var(--card-border);
        border-radius: 8px;
        background: rgba(10, 10, 20, 0.5);
        color: var(--text-light);
        font-size: 1rem;
        transition: border-color 0.3s ease;
    }

        .form-group input:focus {
            outline: none;
            border-color: var(--neon-blue);
        }

/* 更新列表 */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

    .timeline::before {
        content: '';
        position: absolute;
        left: 50%;
        top: 0;
        bottom: 0;
        width: 2px;
        background: var(--gradient);
        transform: translateX(-50%);
    }

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: calc(50% - 2rem);
}

    .timeline-item:nth-child(odd) {
        left: 0;
    }

    .timeline-item:nth-child(even) {
        left: calc(50% + 2rem);
    }

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 1.5rem;
    position: relative;
    transition: all 0.3s ease;
}

    .timeline-content:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-glow);
        border-color: rgba(100, 100, 255, 0.4);
    }

.timeline-date {
    position: absolute;
    top: -15px;
    left: -15px;
    background: var(--gradient);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.timeline-item:nth-child(even) .timeline-date {
    left: auto;
    right: -15px;
}

.timeline-content h3 {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 在线采购 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

    .pricing-card.popular::before {
        background: linear-gradient(135deg, var(--neon-accent), var(--neon-blue));
    }

    .pricing-card:hover {
        transform: translateY(-10px);
        box-shadow: var(--shadow-glow);
        border-color: rgba(100, 100, 255, 0.4);
    }

/* .pricing-card:hover::before {
                    opacity: 1;
                }*/

.popular-tag {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--neon-accent);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 1rem 0;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pricing-features {
    list-style: none;
    margin: 1.5rem 0;
    text-align: left;
}

    .pricing-features li {
        padding: 0.5rem 0;
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

        .pricing-features li::before {
            content: '✓';
            color: var(--neon-accent);
            font-weight: bold;
        }

/* 在线咨询 */
.consultation-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 3rem;
}

.consultation-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-group.full-width {
    width: 100%;
}

.form-group.half-width {
    flex: 1;
    min-width: 200px;
}

select {
    padding: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background: rgba(10, 10, 20, 0.5);
    color: var(--text-light);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23a0a0d0' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 3rem;
}

    select:focus {
        outline: none;
        border-color: var(--neon-blue);
    }

textarea {
    padding: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background: rgba(10, 10, 20, 0.5);
    color: var(--text-light);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

    textarea:focus {
        outline: none;
        border-color: var(--neon-blue);
    }

/* 关于我们 */
.about-content {
    max-width: 820px;
    margin: 0 auto 3rem;
    text-align: center;
}

    .about-content p {
        color: var(--text-secondary);
        font-size: 1.1rem;
        line-height: 1.8;
        margin-bottom: 1.5rem;
    }

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.team-member {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

    .team-member:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-glow);
        border-color: rgba(100, 100, 255, 0.4);
    }

.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--gradient);
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.team-member h3 {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.team-member p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .nav-links {
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: calc(100% - 60px);
        margin-left: 60px;
    }

        .timeline-item:nth-child(even) {
            left: 0;
        }

    .timeline-date {
        left: -45px !important;
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #6c7a8f;
    border-top: 1px solid #1f2a3a;
    margin-top: 0rem;
}

    footer a {
        color: #95a5a6;
        text-decoration: none;
        margin-right: 15px;
    }

        footer a:hover {
            color: #ffffff;
            text-decoration: underline;
        }