:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --accent: #764ba2;
    --success: #48bb78;
    --danger: #f56565;
    --alipay: #1677FF;
    --wechat: #09BB07;
    --qq: #12B7F5;
    --bank: #764ba2;
    --bg-1: #667eea;
    --bg-2: #764ba2;
    --bg-3: #f093fb;
    --card-bg: rgba(255, 255, 255, 0.95);
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.25);
    --text: #2d3748;
    --text-light: #718096;
    --text-muted: #a0aec0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.18);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.4);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', sans-serif;
    min-height: 100vh;
    color: var(--text);
    background: linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 50%, var(--bg-3) 100%);
    background-attachment: fixed;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 10%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.bg-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
    animation: float 20s ease-in-out infinite;
}

.bg-blob:nth-child(1) {
    width: 400px; height: 400px;
    background: #f093fb;
    top: -100px; left: -100px;
    animation-delay: 0s;
}

.bg-blob:nth-child(2) {
    width: 500px; height: 500px;
    background: #4facfe;
    bottom: -150px; right: -150px;
    animation-delay: -5s;
}

.bg-blob:nth-child(3) {
    width: 300px; height: 300px;
    background: #43e97b;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

/* ========== Header ========== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
    animation: slideDown 0.6s var(--transition) both;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: white;
}

.brand-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.brand-text {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 20px;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.brand-sub {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
    margin-top: 2px;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--transition);
    backdrop-filter: blur(10px);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* ========== Hero Section ========== */
.hero {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s var(--transition) 0.1s both;
}

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

.hero h1 {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: clamp(28px, 5vw, 44px);
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ========== Tabs ========== */
.tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s var(--transition) 0.2s both;
}

.tab {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s var(--transition);
    backdrop-filter: blur(10px);
    font-family: inherit;
}

.tab:hover {
    background: rgba(255, 255, 255, 0.25);
}

.tab.active {
    background: white;
    color: var(--primary);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* ========== Cards Grid ========== */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s var(--transition);
    animation: fadeInUp 0.8s var(--transition) both;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.card:nth-child(1) { animation-delay: 0.2s; }
.card:nth-child(2) { animation-delay: 0.3s; }
.card:nth-child(3) { animation-delay: 0.4s; }
.card:nth-child(4) { animation-delay: 0.5s; }

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--card-color, var(--primary));
    opacity: 0.9;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    flex-shrink: 0;
}

.card.alipay .card-icon { background: linear-gradient(135deg, #1677FF, #409FFF); }
.card.wechat .card-icon { background: linear-gradient(135deg, #09BB07, #26DE81); }
.card.qq .card-icon { background: linear-gradient(135deg, #12B7F5, #4FC3F7); }
.card.bank .card-icon { background: linear-gradient(135deg, #764ba2, #b06ab3); }

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.card-badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 500;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    border-radius: 20px;
    margin-top: 4px;
}

.card-info {
    margin-bottom: 16px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.06);
    transition: background 0.2s;
    border-radius: var(--radius-sm);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.info-value {
    font-size: 14px;
    color: var(--text);
    font-weight: 600;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn {
    width: 26px;
    height: 26px;
    border: none;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 13px;
}

.copy-btn:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.copy-btn.copied {
    background: var(--success);
    color: white;
}

.qr-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    padding: 16px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: var(--radius-md);
    margin-top: 12px;
    overflow: hidden;
}

.qr-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
    transform: translateX(-100%);
    animation: shimmer 3s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    100% { transform: translateX(100%); }
}

.qr-image {
    width: 200px;
    height: 200px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    transition: transform 0.3s;
}

.card:hover .qr-image {
    transform: scale(1.03);
}

.qr-hint {
    text-align: center;
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.qr-hint svg {
    vertical-align: middle;
    margin-right: 4px;
}

/* ========== Bank List ========== */
.bank-list {
    display: grid;
    gap: 12px;
}

.bank-item {
    padding: 14px 16px;
    background: linear-gradient(135deg, #f8f9fa, #f1f3f5);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--bank);
    transition: all 0.3s var(--transition);
}

.bank-item:hover {
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
    transform: translateX(4px);
}

.bank-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.bank-name::before {
    content: '🏦';
    font-size: 16px;
}

.bank-detail {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.bank-detail span {
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.divider {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
    margin: 16px 0;
}

/* ========== Footer / Contact ========== */
.footer {
    text-align: center;
    padding: 32px 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: white;
    animation: fadeInUp 0.8s var(--transition) 0.6s both;
}

.footer-text {
    font-size: 14px;
    margin-bottom: 16px;
    opacity: 0.9;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--transition);
    box-shadow: 0 8px 25px rgba(238, 90, 111, 0.4);
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(238, 90, 111, 0.5);
}

.contact-btn svg {
    width: 20px;
    height: 20px;
}

.copyright {
    margin-top: 20px;
    font-size: 12px;
    opacity: 0.6;
}

/* ========== Toast ========== */
.toast {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    padding: 12px 24px;
    background: rgba(0, 0, 0, 0.85);
    color: white;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    z-index: 9999;
    transition: transform 0.4s var(--transition);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: linear-gradient(135deg, #48bb78, #38a169);
}

.toast.error {
    background: linear-gradient(135deg, #f56565, #e53e3e);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .container { padding: 16px 14px 40px; }
    .header { padding: 12px 16px; }
    .brand-text { font-size: 16px; }
    .brand-sub { display: none; }
    .brand-icon { width: 40px; height: 40px; font-size: 18px; }
    .nav-btn { padding: 8px 16px; font-size: 13px; }
    .hero { margin-bottom: 24px; }
    .hero h1 { font-size: 26px; }
    .grid { grid-template-columns: 1fr; gap: 18px; }
    .card { padding: 22px 20px; }
    .qr-image { width: 170px; height: 170px; }
    .tabs { gap: 6px; }
    .tab { padding: 8px 14px; font-size: 13px; }
    .bank-detail { gap: 8px; flex-direction: column; }
}

@media (max-width: 480px) {
    .info-row { flex-direction: column; align-items: flex-start; gap: 4px; }
    .info-value { font-size: 13px; word-break: break-all; }
}