@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #e63946;
    --secondary-color: #1d3557;
    --accent-color: #f1c40f;
    --dark-color: #121212;
    --light-color: #f1faee;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0a0a0a;
    color: #f1faee;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none" stroke="%23333" stroke-width="1"/></svg>');
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', sans-serif;
}

.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://p3-doubao-search-sign.byteimg.com/labis/d13f92b805c847ef3902ec647154ce8e~tplv-be4g95zd3a-image.jpeg?lk3s=feb11e32&x-expires=1784600577&x-signature=VQfUrCuPKQNMdbns9W3kZRypkNI%3D');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.download-btn {
    background: linear-gradient(45deg, #e63946, #c0392b);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(230, 57, 70, 0.4);
}

.download-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.download-btn:hover::after {
    width: 300px;
    height: 300px;
}

.card {
    background: rgba(29, 53, 87, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.version-card {
    background: rgba(18, 18, 18, 0.8);
    border-left: 4px solid var(--primary-color);
}

.screenshot-card {
    overflow: hidden;
}

.screenshot-card img {
    transition: transform 0.5s ease;
}

.screenshot-card:hover img {
    transform: scale(1.1);
}

.feature-icon {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.timeline-item {
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -25px;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: -31px;
    top: 10px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-color);
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .timeline-item::before,
    .timeline-item::after {
        display: none;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #121212;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #c0392b;
}

/* 加载动画 */
.loader {
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 粒子效果 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

/* 浮动动画 */
@keyframes float {
    0% {
        transform: translateY(0) translateX(0);
    }
    25% {
        transform: translateY(-20px) translateX(10px);
    }
    50% {
        transform: translateY(0) translateX(20px);
    }
    75% {
        transform: translateY(20px) translateX(10px);
    }
    100% {
        transform: translateY(0) translateX(0);
    }
}