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

body {
    font-family: 'Arial', sans-serif;
    background: 
        linear-gradient(135deg, rgba(10, 10, 10, 0.85) 0%, rgba(26, 10, 26, 0.85) 50%, rgba(10, 26, 26, 0.85) 100%),
        url('../images/background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: #fff;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 赛博朋克背景效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 0, 100, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 255, 255, 0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* 管理员按钮 */
.admin-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(0, 255, 255, 0.3);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 20px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.admin-btn:hover {
    background: rgba(0, 255, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
    transform: scale(1.1);
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

/* 头部 */
.header {
    text-align: center;
    margin-bottom: 60px;
    padding: 40px 20px;
}

.title {
    font-size: 3.5rem;
    font-weight: bold;
    background: linear-gradient(90deg, #00ffff 0%, #ff0066 50%, #00ffff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
    text-shadow: 0 0 30px rgba(0, 255, 255, 0.5), 0 0 60px rgba(255, 0, 102, 0.3);
    margin-bottom: 20px;
}

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

.subtitle {
    font-size: 1.5rem;
    color: #00ffff;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.6);
    opacity: 0.9;
}

/* 行动按钮区 */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 80px;
    flex-wrap: wrap;
}

.btn {
    position: relative;
    padding: 18px 60px;
    font-size: 1.2rem;
    font-weight: bold;
    border: 2px solid;
    border-radius: 50px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
    background: transparent;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.btn-text {
    position: relative;
    z-index: 2;
}

.btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: 1;
}

.btn-primary {
    color: #00ffff;
    border-color: #00ffff;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.4), inset 0 0 20px rgba(0, 255, 255, 0.1);
}

.btn-primary .btn-glow {
    background: rgba(0, 255, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 40px rgba(0, 255, 255, 0.8), inset 0 0 30px rgba(0, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn-primary:hover .btn-glow {
    width: 300px;
    height: 300px;
}

.btn-secondary {
    color: #ff0066;
    border-color: #ff0066;
    box-shadow: 0 0 20px rgba(255, 0, 102, 0.4), inset 0 0 20px rgba(255, 0, 102, 0.1);
}

.btn-secondary .btn-glow {
    background: rgba(255, 0, 102, 0.3);
}

.btn-secondary:hover {
    box-shadow: 0 0 40px rgba(255, 0, 102, 0.8), inset 0 0 30px rgba(255, 0, 102, 0.2);
    transform: translateY(-3px);
}

.btn-secondary:hover .btn-glow {
    width: 300px;
    height: 300px;
}

.btn-subscribe {
    color: #9d4edd;
    border-color: #9d4edd;
    box-shadow: 0 0 20px rgba(157, 78, 221, 0.4), inset 0 0 20px rgba(157, 78, 221, 0.1);
}

.btn-subscribe .btn-glow {
    background: rgba(157, 78, 221, 0.3);
}

.btn-subscribe:hover {
    box-shadow: 0 0 40px rgba(157, 78, 221, 0.8), inset 0 0 30px rgba(157, 78, 221, 0.2);
    transform: translateY(-3px);
}

.btn-subscribe:hover .btn-glow {
    width: 300px;
    height: 300px;
}

/* Subscribe提示文字 */
.subscribe-note {
    text-align: center;
    color: #888;
    font-size: 0.95rem;
    font-style: italic;
    margin-top: -50px;
    margin-bottom: 60px;
    opacity: 0.8;
}

/* 内容区域 */
.content {
    max-width: 900px;
    margin: 0 auto;
}

.section {
    margin-bottom: 50px;
}

.section-title {
    font-size: 2rem;
    color: #00ffff;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.6);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(0, 255, 255, 0.3);
}

.info-card {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.info-card:hover {
    border-color: rgba(0, 255, 255, 0.4);
    box-shadow: 0 8px 32px rgba(0, 255, 255, 0.2);
    transform: translateY(-2px);
}

.info-card p {
    margin-bottom: 10px;
    line-height: 1.6;
    font-size: 1.1rem;
}

.info-card strong {
    color: #ff0066;
    text-shadow: 0 0 10px rgba(255, 0, 102, 0.5);
}

/* 奖项部分 */
.prize-section {
    margin-bottom: 30px;
}

.prize-category {
    font-size: 1.5rem;
    color: #ff0066;
    text-shadow: 0 0 15px rgba(255, 0, 102, 0.6);
    margin-bottom: 15px;
}

.prize-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.prize-item:last-child {
    border-bottom: none;
}

.prize-badge {
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.prize-badge.viral {
    background: linear-gradient(135deg, #ff0066, #ff3399);
    box-shadow: 0 0 15px rgba(255, 0, 102, 0.5);
}

.prize-badge.gold {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #000;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
}

.prize-badge.silver {
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8);
    color: #000;
    box-shadow: 0 0 15px rgba(192, 192, 192, 0.5);
}

.prize-badge.bronze {
    background: linear-gradient(135deg, #cd7f32, #e8a87c);
    color: #000;
    box-shadow: 0 0 15px rgba(205, 127, 50, 0.5);
}

.prize-badge.spotlight {
    background: linear-gradient(135deg, #00ffff, #00cccc);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.prize-amount {
    font-size: 1.3rem;
    font-weight: bold;
    color: #00ffff;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.6);
}

.prize-note {
    margin-top: 10px;
    font-style: italic;
    color: #ff0066;
    font-size: 0.95rem;
}

/* 步骤 */
.step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    gap: 15px;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, #00ffff, #0099cc);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.step p {
    flex: 1;
    margin: 0;
    padding-top: 5px;
}

/* 列表 */
.requirement-list,
.rule-list {
    list-style: none;
    padding-left: 0;
}

.requirement-list li,
.rule-list li {
    padding: 10px 0 10px 30px;
    position: relative;
    line-height: 1.6;
}

.requirement-list li::before,
.rule-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: #00ffff;
    font-size: 1.5rem;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.6);
}

.subsection-title {
    color: #ff0066;
    font-size: 1.2rem;
    margin-bottom: 15px;
    text-shadow: 0 0 10px rgba(255, 0, 102, 0.5);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: rgba(10, 10, 10, 0.95);
    border: 2px solid rgba(0, 255, 255, 0.4);
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 0 50px rgba(0, 255, 255, 0.3), inset 0 0 50px rgba(0, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: transparent;
    border: none;
    color: #00ffff;
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1;
}

.modal-close:hover {
    color: #ff0066;
    text-shadow: 0 0 20px rgba(255, 0, 102, 0.8);
    transform: rotate(90deg);
}

.modal-title {
    font-size: 2rem;
    color: #00ffff;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.6);
    margin-bottom: 30px;
    text-align: center;
}

/* 表单 */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    color: #00ffff;
    margin-bottom: 8px;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.4);
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(0, 255, 255, 0.3);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #00ffff;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.4);
    background: rgba(0, 255, 255, 0.05);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.btn-submit {
    width: 100%;
    margin-top: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .modal-content {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2rem;
    }
    
    .header {
        padding: 20px 10px;
    }
    
    .container {
        padding: 20px 15px;
    }
}

/* 底部Logo */
.footer-logo {
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

.footer-logo img {
    max-width: 200px;
    height: auto;
    transition: all 0.3s ease;
}

.footer-logo img:hover {
    transform: translateY(-2px);
}