/* 
 * NeoMeso - 首页样式表
 * 版本：1.0
 * 最后更新：2026-03-21
 */

/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    min-height: 100vh;
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
    overflow-y: auto;
}

/* ==================== Hero 区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 80px 20px 40px;
    text-align: center;
    background: radial-gradient(ellipse at top, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
                radial-gradient(ellipse at bottom right, rgba(118, 75, 162, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 20% 30%, rgba(102, 126, 234, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(118, 75, 162, 0.06) 0%, transparent 40%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(102, 126, 234, 0.08) 0%, transparent 50%);
    animation: ambientGlow1 15s ease-in-out infinite;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(118, 75, 162, 0.06) 0%, transparent 50%);
    animation: ambientGlow2 15s ease-in-out infinite;
    animation-delay: -7.5s;
    pointer-events: none;
}

.logo {
    font-size: 4em;
    font-weight: bold;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #667eea 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInDown 1.2s cubic-bezier(0.23, 1, 0.32, 1),
                shimmer 3s linear infinite;
    letter-spacing: 8px;
}

.tagline {
    font-size: 1.5em;
    color: #a0a0ff;
    margin-bottom: 60px;
    animation: fadeInUp 1.2s cubic-bezier(0.23, 1, 0.32, 1) 0.3s both;
}

/* ==================== 导航卡片 ==================== */
.nav-cards {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    max-width: 1200px;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.nav-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 50px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    min-width: 280px;
    text-decoration: none;
    color: inherit;
    display: block;
}

.nav-card:hover {
    transform: translateY(-15px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
}

.nav-icon {
    font-size: 3.5em;
    margin-bottom: 20px;
}

.nav-title {
    font-size: 1.6em;
    color: #e0e0ff;
    margin-bottom: 15px;
}

.nav-desc {
    font-size: 1em;
    color: #a0a0c0;
    line-height: 1.6;
}

.nav-arrow {
    margin-top: 25px;
    font-size: 1.2em;
    color: #667eea;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.nav-card:hover .nav-arrow {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 页脚 ==================== */
.footer {
    width: 100%;
    padding: 40px 20px;
    text-align: center;
    margin-top: auto;
}

.footer p {
    color: #9090b0;
    font-size: 0.85em;
    margin: 8px 0;
    letter-spacing: 0.5px;
}

.contact-info {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
}

.contact-info p {
    color: #a0a0c0;
    font-size: 0.82em;
    margin: 6px 0;
}

.contact-info p.en {
    color: #8080a0;
    font-size: 0.78em;
    margin-top: 4px;
    font-style: italic;
}

/* ==================== 动画 ==================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes shimmer {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 200% center;
    }
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.02);
        opacity: 0.95;
    }
}

@keyframes ambientGlow1 {
    0%, 100% {
        opacity: 0.15;
        transform: translate(0, 0) scale(1);
    }
    25% {
        opacity: 0.2;
        transform: translate(50px, -30px) scale(1.1);
    }
    50% {
        opacity: 0.18;
        transform: translate(-20px, 50px) scale(1.05);
    }
    75% {
        opacity: 0.16;
        transform: translate(30px, 20px) scale(0.95);
    }
}

@keyframes ambientGlow2 {
    0%, 100% {
        opacity: 0.12;
        transform: translate(0, 0) scale(1);
    }
    33% {
        opacity: 0.15;
        transform: translate(-40px, 40px) scale(1.08);
    }
    66% {
        opacity: 0.1;
        transform: translate(60px, -20px) scale(0.92);
    }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .logo {
        font-size: 2.5em;
    }
    
    .tagline {
        font-size: 1.2em;
    }
    
    .nav-cards {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-card {
        width: 100%;
        max-width: 350px;
    }
}