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

:root {
    --bg: #05070f;
    --bg-grad: linear-gradient(180deg, #05070f 0%, #0a0e1a 50%, #05070f 100%);
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --text: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.6);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --success: #4CAF50;
}

html, body {
    background: var(--bg-grad);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    min-height: 100vh;
    line-height: 1.6;
}

/* 顶部导航 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: rgba(5, 7, 15, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #2196F3, #1976D2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
}

.logo span {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
}

.menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: 0.3s;
}

/* 公告栏 */
.notice-bar {
    background: rgba(33, 150, 243, 0.1);
    padding: 10px;
    font-size: 14px;
    border-bottom: 1px solid var(--card-border);
}

.notice-bar marquee {
    color: var(--primary);
}

/* 区块 */
.section {
    padding: 24px 20px;
}

.section-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-left: 12px;
    border-left: 3px solid var(--primary);
}

/* 能量卡片 */
.energy-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
}

.energy-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.energy-label {
    font-size: 14px;
    color: var(--text-dim);
}

.energy-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
}

.energy-promo {
    font-size: 13px;
    color: var(--success);
    margin-bottom: 16px;
    padding: 8px 12px;
    background: rgba(76, 175, 80, 0.1);
    border-radius: 8px;
    text-align: center;
}

.energy-desc {
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 20px;
    text-align: center;
}

/* 按钮 */
.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-primary:active {
    transform: scale(0.98);
}

/* 地址框 */
.address-box {
    margin-top: 20px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
}

.address-label {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.address-value {
    font-size: 14px;
    font-family: monospace;
    background: rgba(255, 255, 255, 0.1);
    padding: 12px;
    border-radius: 8px;
    word-break: break-all;
    margin-bottom: 12px;
}

.btn-copy {
    width: 100%;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
}

/* 记录列表 */
.record-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.record-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px;
}

.record-time {
    font-size: 13px;
    color: var(--text-dim);
}

.record-amount {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}

.record-status {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
}

.record-status.success {
    background: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

/* 介绍列表 */
.intro-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.intro-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px;
}

.intro-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.intro-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.intro-desc {
    font-size: 13px;
    color: var(--text-dim);
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px;
}

.faq-question {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary);
}

.faq-answer {
    font-size: 13px;
    color: var(--text-dim);
    line-height: 1.7;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 32px 20px;
    font-size: 12px;
    color: var(--text-dim);
    border-top: 1px solid var(--card-border);
    margin-top: 24px;
}

/* Toast */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 14px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
}