:root {
    --primary-color: #4A90E2;
    --success-color: #28a745;
    --white-color: #ffffff;
    --bg-color: #f7f8fc;
    --text-color: #2c3e50;
    --text-secondary-color: #8492a6;
    --border-color: #e0e6ed;
    --card-shadow: 0 10px 40px rgba(44, 62, 80, 0.1);
    --border-radius-lg: 24px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.page-container {
    flex: 1 0 auto;
    width: 100%;
}

.page-wrapper {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--white-color);
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.8s ease-out backwards;
}

.brand-container {
    position: relative;
    background: linear-gradient(160deg, var(--primary-color) 0%, #3dd5b9 100%);
    color: var(--white-color);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 1.5rem;
    text-align: center;
}

.brand-content svg {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
}
.brand-title {
    font-size: clamp(1.6rem, 5vw, 2.2rem);
    font-weight: 700;
    margin: 0 0 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.brand-subtitle {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    opacity: 0.9;
    margin: 0;
}

.form-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.notice-card {
    width: 100%;
    max-width: 450px;
    text-align: center;
}
.notice-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}
.notice-text {
    color: var(--text-secondary-color);
    margin-bottom: 2rem;
}
.wx-qrcode-container-main {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    background-color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.wx-qrcode-container-main img {
    width: 180px;
    height: 180px;
    display: block;
    margin: 0 auto;
}
.scan-tip {
    font-weight: 500;
    margin-top: 1rem;
    color: var(--text-color);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary-color);
    font-size: 0.9rem;
}
.feature-list li {
    display: flex;
    align-items: center;
}
.feature-list .feature-icon {
    color: var(--success-color);
    margin-right: 0.5rem;
}

.page-footer {
    width: 100%;
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--bg-color);
}
.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    margin-bottom: 1rem;
}
.footer-links a {
    color: var(--text-secondary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}
.footer-links a:hover { color: var(--primary-color); }
.footer-links .divider { display: none; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (min-width: 992px) {
    .page-wrapper {
        flex-direction: row;
        border-radius: var(--border-radius-lg);
        box-shadow: var(--card-shadow);
        height: 700px;
        max-height: 90vh;
    }
    .brand-container {
        flex: 0 0 45%;
        border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
    }
    .form-container {
        flex: 1 1 55%;
    }
}