:root {
    --primary-color: #3b82f6; /* 蓝色 */
    --secondary-color: #60a5fa; /* 浅蓝 */
    --bg-color: #ffffff;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --card-bg: #f3f4f6;
    --btn-color: #2563eb;
    --btn-hover: #1d4ed8;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    background-image: url("背景.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--text-color);
    line-height: 1.5;
}

.container {
    max-width: 480px; /* 模拟移动端最大宽度 */
    margin: 0 auto;
    padding: 0 16px 40px;
    background-color: transparent;
    min-height: 100vh;
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    position: sticky;
    top: 0;
    background: linear-gradient(90deg, #e6f3ff 0%, #d8ecff 50%, #cbe8ff 100%);
    z-index: 100;
    border: none;
    border-radius: 16px;
    margin-top: 8px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

/* 中奖横幅样式 */
.winner-marquee {
    background: transparent;
    height: 30px;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
}

.marquee-content {
    white-space: nowrap;
    position: absolute;
    animation: marquee 15s linear infinite;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    font-size: 14px;
    font-weight: 500;
}

@keyframes marquee {
    0% { transform: translateX(100vw); }
    100% { transform: translateX(-100%); }
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.logo-img {
    height: 28px;
    width: auto;
    display: block;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--text-color);
    text-decoration: none;
}

.nav-icon svg {
    width: 20px;
    height: 20px;
}

.nav-icon svg path {
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-icon:hover {
    color: var(--primary-color);
}

.wallet-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.wallet-btn:active {
    background-color: var(--btn-hover);
}

/* 主内容 */
.main-content {
    text-align: center;
    padding: 20px 0;
}

.slogan {
    font-size: 1.5rem;
    margin-bottom: 24px;
    background: linear-gradient(45deg, #2563eb, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.snowball-wrapper {
    height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 24px;
}

.snowball-img {
    width: 90px;
    height: auto;
    animation: bounce 2s infinite ease-in-out;
    filter: drop-shadow(0 10px 20px rgba(37, 99, 235, 0.2));
}

.snowball {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at 30% 30%, #fff, #dbeafe, #3b82f6);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
    animation: bounce 2s infinite ease-in-out;
}

.inner-snow {
    font-size: 2rem;
    animation: spin 4s linear infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.boost-btn {
    background: linear-gradient(to right, #2563eb, #3b82f6);
    color: white;
    border: none;
    padding: 14px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    cursor: pointer;
    margin-bottom: 24px;
    transition: transform 0.1s;
}

.boost-btn:active {
    transform: scale(0.95);
}

.rules-box {
    background-color: #f8fafc;
    border-radius: 12px;
    padding: 16px;
    text-align: left;
    margin-bottom: 24px;
    border: 1px solid #e2e8f0;
}

.rules-box summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    list-style: none;
}

.rules-box summary::after {
    content: "⌄";
    color: var(--text-light);
    transition: transform 0.2s;
}

.rules-box[open] summary::after {
    transform: rotate(180deg);
}

.rules-box ul {
    list-style: none;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 8px;
}

.rules-box li {
    margin-bottom: 4px;
}

/* 信息卡片通用样式 */
.info-card {
    background-color: white;
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    border: 1px solid #f3f4f6;
    text-align: center;
}

.info-card h2 {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 12px;
    font-weight: 500;
}

/* 余额卡片 */
.balance-amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-color);
}

.currency {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* 倒计时 */
.countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.time-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.time-unit .num {
    background-color: #1f2937;
    color: white;
    padding: 8px;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: bold;
    min-width: 44px;
}

.time-unit .label {
    font-size: 0.7rem;
    margin-top: 4px;
    color: var(--text-light);
}

.separator {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 16px; /* 对齐数字 */
}

/* 统计数据 */
.stats-card {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 15px 10px;
}

.stat-item {
    flex: 1;
    text-align: center;
}

.bonus-value {
    color: #ff4d4f !important;
    text-shadow: 0 0 5px rgba(255, 77, 79, 0.2);
}

.stat-item h3 {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--text-color);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: #e5e7eb;
}

/* 历史记录 */
.history-section {
    margin-top: 24px;
}

.history-section h2 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    text-align: center;
}

.history-list {
    background-color: white;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid #f3f4f6;
}

.history-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid #f3f4f6;
    font-size: 0.9rem;
}

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

.history-item .address {
    color: var(--text-light);
    font-family: monospace;
}

.history-item .prize {
    font-weight: 600;
    color: var(--primary-color);
}