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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #FFFFFF;
    min-height: 100vh;
    overflow-x: hidden;
    color: #424242;
}

/* Header Styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 4rem;
    background: #FFFFFF;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: #424242;
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #1976D2;
}

.header-right {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-secondary {
    background: #FFFFFF;
    color: #1976D2;
    border: 1px solid #1976D2;
    padding: 0.625rem 1.5rem;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #F5F5F5;
}

.btn-primary {
    background: #1565C0;
    color: #FFFFFF;
    border: none;
    padding: 0.625rem 1.5rem;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #0D47A1;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(21, 101, 192, 0.3);
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 100px);
    padding: 2rem;
    text-align: center;
}

/* Top Banner */
.top-banner {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid #1976D2;
    border-radius: 8px;
    margin-bottom: 3rem;
    background: #FFFFFF;
}

.new-badge {
    background: #1976D2;
    color: #FFFFFF;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.banner-text {
    color: #424242;
    font-size: 14px;
    font-weight: 400;
}

/* Hero Section */
.hero-section {
    margin-bottom: 4rem;
}

.main-title {
    font-size: 72px;
    font-weight: 700;
    color: #212121;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 48px;
    font-weight: 700;
    color: #212121;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.tagline {
    font-size: 24px;
    font-weight: 400;
    color: #616161;
    margin-bottom: 3rem;
}

.cta-button {
    background: linear-gradient(135deg, #1976D2 0%, #42A5F5 100%);
    color: #FFFFFF;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(25, 118, 210, 0.4);
}

.rocket-icon {
    width: 20px;
    height: 20px;
}

/* Info Card */
.info-card {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 2rem 3rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    max-width: 500px;
}

.cart-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-icon svg {
    width: 100%;
    height: 100%;
}

.info-text {
    color: #424242;
    font-size: 16px;
    font-weight: 400;
}

/* Floating Elements */
/* Side Navigation Arrow */
.side-nav-arrow {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: #1565C0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(21, 101, 192, 0.3);
}

.side-nav-arrow:hover {
    background: #0D47A1;
    transform: translateY(-50%) translateX(-4px);
    box-shadow: 0 6px 16px rgba(21, 101, 192, 0.4);
}

.side-nav-arrow svg {
    width: 24px;
    height: 24px;
}

/* Customer Service Buttons */
.customer-service {
    position: fixed;
    right: 2rem;
    bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1000;
}

.service-btn {
    background: #1976D2;
    color: #FFFFFF;
    border: none;
    padding: 0.875rem 1.25rem;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
    white-space: nowrap;
}

.service-btn:hover {
    background: #1565C0;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(25, 118, 210, 0.4);
}

.service-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* QR Code Container */
.qr-code-container {
    position: relative;
}

.qr-code-popup {
    position: absolute;
    bottom: calc(100% + 1rem);
    right: 0;
    background: #FFFFFF;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1001;
    min-width: 200px;
}

.qr-code-popup.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.qr-code-image {
    width: 200px;
    height: 200px;
    display: block;
    border-radius: 8px;
}

/* 添加箭头指向按钮 */
.qr-code-popup::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: 20px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid #FFFFFF;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .header {
        padding: 1.5rem 2rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .main-title {
        font-size: 56px;
    }

    .subtitle {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.5rem 1.5rem;
    }

    .header-left {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .header-right {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .main-title {
        font-size: 42px;
    }

    .subtitle {
        font-size: 28px;
    }

    .tagline {
        font-size: 20px;
    }

    .side-nav-arrow {
        display: none;
    }

    .customer-service {
        right: 1rem;
        bottom: 1rem;
    }

    .service-btn {
        padding: 0.75rem 1rem;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 32px;
    }

    .subtitle {
        font-size: 22px;
    }

    .tagline {
        font-size: 18px;
    }

    .cta-button {
        padding: 0.875rem 2rem;
        font-size: 16px;
    }

    .info-card {
        padding: 1.5rem 2rem;
    }

    .nav-links {
        font-size: 14px;
    }

    .btn-secondary,
    .btn-primary {
        padding: 0.5rem 1rem;
        font-size: 14px;
    }
}