* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #1a0000 0%, #4a0000 50%, #000000 100%);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, #FFD700, #FFA500, #FF6347);
    z-index: 9999;
    transition: width 0.1s ease-out;
}

/* 粒子背景 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}
.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: #FFD700;
    border-radius: 50%;
    animation: particleFloat 20s infinite;
    opacity: 0.4;
}
@keyframes particleFloat {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10%, 90% {
        opacity: 0.4;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

/* 固定头部 */
.fixed-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.8) 100%);
    padding: 15px 30px;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 2px solid #FFD700;
    animation: slideDown 0.8s ease-out;
}
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand-name {
    font-size: 2em;
    color: #FFD700;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    animation: glowPulse 2s ease-in-out infinite;
}
@keyframes glowPulse {
    0%, 100% { text-shadow: 2px 2px 4px rgba(255, 215, 0, 0.8); }
    50% { text-shadow: 0 0 20px rgba(255, 215, 0, 1), 0 0 30px rgba(255, 215, 0, 0.6); }
}
.brand-slogan {
    font-size: 0.9em;
    color: #FF6347;
    font-style: italic;
}

/* 分类导航 */
.category-nav {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(139, 0, 0, 0.95);
    padding: 15px;
    z-index: 99;
    overflow-x: auto;
    white-space: nowrap;
    border-bottom: 1px solid #FFD700;
    animation: slideDown 1s ease-out 0.2s both;
}
.category-nav::-webkit-scrollbar {
    display: none;
}
.nav-items {
    display: flex;
    justify-content: center;
    gap: 15px;
    max-width: 1400px;
    margin: 0 auto;
}
.nav-item {
    padding: 10px 25px;
    background: linear-gradient(145deg, #8B0000, #4a0000);
    border: 2px solid #FFD700;
    color: #FFD700;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    white-space: nowrap;
    opacity: 0;
    animation: popIn 0.6s ease-out forwards;
}
.nav-item:nth-child(1) { animation-delay: 0.3s; }
.nav-item:nth-child(2) { animation-delay: 0.4s; }
.nav-item:nth-child(3) { animation-delay: 0.5s; }
.nav-item:nth-child(4) { animation-delay: 0.6s; }
.nav-item:nth-child(5) { animation-delay: 0.7s; }
.nav-item:nth-child(6) { animation-delay: 0.8s; }
.nav-item:nth-child(7) { animation-delay: 0.9s; }
.nav-item:nth-child(8) { animation-delay: 1.0s; }
@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.nav-item:hover, .nav-item.active {
    background: linear-gradient(145deg, #FFD700, #FFA500);
    color: #000;
    transform: scale(1.1);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.5);
}

/* 页面区域 */
.page-section {
    min-height: 100vh;
    padding: 200px 20px 100px;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}
.section-title {
    font-size: 3em;
    color: #FFD700;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
    opacity: 0;
    transform: translateY(-50px);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.section-title.visible {
    opacity: 1;
    transform: translateY(0);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, #FFD700, transparent);
    opacity: 0;
    transition: all 0.6s ease-out 0.3s;
}
.section-title.visible::after {
    opacity: 1;
    width: 200px;
}

/* 滚动动画卡片 */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.product-card {
    background: linear-gradient(145deg, rgba(139, 0, 0, 0.4), rgba(0, 0, 0, 0.8));
    border: 2px solid #FFD700;
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    transform-style: preserve-3d;
    opacity: 0;
    box-shadow: 0 20px 60px rgba(255, 215, 0, 0.2);
    position: relative;
}

/* 不同的滚动动画效果 */
.product-card.animate-left {
    transform: translateX(-100px) rotateY(-15deg);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.product-card.animate-right {
    transform: translateX(100px) rotateY(15deg);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.product-card.animate-up {
    transform: translateY(100px) rotateX(15deg);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.product-card.animate-scale {
    transform: scale(0);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.product-card.animate-rotate {
    transform: rotateZ(10deg) scale(0.8);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.product-card.visible {
    opacity: 1;
    transform: translateY(0) rotateX(0) rotateY(0) rotateZ(0) scale(1);
}

.product-card:hover {
    transform: translateY(-20px) scale(1.05) rotateY(10deg);
    box-shadow: 0 40px 80px rgba(255, 215, 0, 0.4);
    border-color: #FFA500;
    z-index: 10;
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s;
    filter: brightness(0.8);
}
.product-card.visible .card-image {
    filter: brightness(1);
}
.product-card:hover .card-image {
    transform: scale(1.1);
}
.card-content {
    padding: 25px;
}
.card-title {
    font-size: 1.5em;
    color: #FFF;
    margin-bottom: 10px;
    font-weight: bold;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.5s ease-out 0.3s;
}
.product-card.visible .card-title {
    transform: translateY(0);
    opacity: 1;
}
.card-specs {
    color: #FF6347;
    font-size: 0.9em;
    margin-bottom: 15px;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.5s ease-out 0.4s;
}
.product-card.visible .card-specs {
    transform: translateY(0);
    opacity: 1;
}
.card-price {
    color: #FFD700;
    font-size: 1.8em;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.5s ease-out 0.5s;
}
.product-card.visible .card-price {
    transform: translateY(0);
    opacity: 1;
}
.card-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(145deg, #FFD700, #FFA500);
    color: #000;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.8em;
    font-weight: bold;
    animation: shimmer 2s infinite;
    z-index: 5;
}
@keyframes shimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 套餐卡片特殊样式 */
.package-card {
    background: linear-gradient(145deg, rgba(255, 215, 0, 0.15), rgba(139, 0, 0, 0.3));
    border: 3px solid #FFD700;
    position: relative;
}
.package-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #FFD700, #FFA500, #FFD700);
    z-index: -1;
    border-radius: 22px;
    animation: borderGlow 3s linear infinite;
    background-size: 400% 400%;
    opacity: 0;
    transition: opacity 0.5s ease-out 0.2s;
}
.package-card.visible::before {
    opacity: 1;
}
@keyframes borderGlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.package-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.package-name {
    font-size: 1.3em;
    color: #FFD700;
    font-weight: bold;
}
.package-price {
    font-size: 2em;
    color: #FF4500;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}
.package-items {
    color: #FFF;
    line-height: 1.8;
}
.package-items span {
    color: #FF6347;
    font-weight: bold;
}

/* 滚动到顶部按钮 */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(145deg, #FFD700, #FFA500);
    border: none;
    border-radius: 50%;
    color: #000;
    font-size: 1.5em;
    cursor: pointer;
    z-index: 98;
    opacity: 0;
    transform: translateY(100px);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.5);
}
.scroll-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.scroll-to-top:hover {
    transform: translateY(-10px) scale(1.1);
    box-shadow: 0 15px 40px rgba(255, 215, 0, 0.7);
}

/* 底部固定信息 */
.fixed-footer {
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.8) 100%);
    padding: 15px 30px;
    z-index: 98;
    backdrop-filter: blur(10px);
    border-top: 1px solid #FFD700;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    transform: translateY(100%);
    transition: transform 0.8s ease-out 1.5s;
}
.fixed-footer.visible {
    transform: translateY(0);
}
.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.store-info {
    display: flex;
    gap: 30px;
    font-size: 0.9em;
}
.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 加载动画指示器 */
.loading-indicator {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 97;
    display: flex;
    gap: 10px;
    opacity: 0;
    transition: opacity 0.5s;
}
.loading-indicator.visible {
    opacity: 1;
}
.loading-dot {
    width: 12px;
    height: 12px;
    background: #FFD700;
    border-radius: 50%;
    animation: loadingBounce 1.4s ease-in-out infinite both;
}
.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }
.loading-dot:nth-child(3) { animation-delay: 0s; }
@keyframes loadingBounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .brand-name {
        font-size: 1.2em;
    }
    .nav-items {
        gap: 8px;
    }
    .nav-item {
        padding: 8px 15px;
        font-size: 0.8em;
    }
    .section-title {
        font-size: 2em;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    .store-info {
        flex-direction: column;
        gap: 10px;
    }
    .scroll-to-top {
        width: 50px;
        height: 50px;
        font-size: 1.2em;
        bottom: 20px;
        right: 20px;
    }
}

/* 滚动指示器 */
.scroll-progress-text {
    position: fixed;
    top: 10px;
    right: 20px;
    color: #FFD700;
    font-size: 0.8em;
    z-index: 10000;
    opacity: 0;
    animation: fadeIn 1s ease-out 2s forwards;
}
@keyframes fadeIn {
    to { opacity: 1; }
}

/* 视差滚动效果 */
.parallax-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}
.parallax-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: parallaxFloat 30s infinite;
}
@keyframes parallaxFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(180deg); }
}