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

:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #7209b7;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --success-color: #4bb543;
    --warning-color: #ffcc00;
    --danger-color: #dc3545;
    --gray-color: #6c757d;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
}

nav a,
nav span {
    color: var(--dark-color);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

main {
    flex: 1;
    padding: 2rem 0;
}

.hero {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cta-button {
    display: inline-block;
    background-color: white;
    color: var(--primary-color);
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.guarantee {
    font-size: 0.9rem;
    opacity: 0.8;
}

.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: var(--dark-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.pricing {
    padding: 4rem 0;
    display: flex;
    justify-content: center;
}

.pricing-card {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.pricing-card h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.price {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.benefits {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.benefits li {
    padding: 0.5rem 0;
    font-size: 1.1rem;
}

footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: auto;
}

.form-container {
    max-width: 500px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.form-container h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.error-message {
    background-color: #ffe6e6;
    color: var(--danger-color);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--danger-color);
}

.payment-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.payment-instructions {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.payment-instructions ol {
    margin-left: 1.5rem;
}

.qr-codes {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
    margin: 2rem 0;
}

.qr-code {
    text-align: center;
}

.qr-img {
    width: 200px;
    height: 200px;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 10px;
    background: white;
}

.success-container,
.pending-container {
    text-align: center;
    max-width: 600px;
    margin: 4rem auto;
    padding: 3rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.success-icon {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.secondary-button {
    display: inline-block;
    background-color: var(--gray-color);
    color: white;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .qr-codes {
        flex-direction: column;
    }

    .actions {
        flex-direction: column;
    }
}

/* 支付状态页面特定样式 */
.payment-status-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.payment-item {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    margin-bottom: 20px;
}

.status-pending {
    border-left: 5px solid var(--warning-color);
    background-color: #fff3cd;
}

.status-approved {
    border-left: 5px solid var(--success-color);
    background-color: #d4edda;
}

.status-rejected {
    border-left: 5px solid var(--danger-color);
    background-color: #f8d7da;
}

.status-pending-text {
    color: #856404;
}

.status-approved-text {
    color: #155724;
}

.status-rejected-text {
    color: #721c24;
}

.payment-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 15px;
}

.payment-info p {
    margin: 5px 0;
}

.membership-active {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 20px;
    text-align: center;
}

.no-payments {
    text-align: center;
    color: var(--gray-color);
    padding: 40px 0;
}

.secondary-button {
    display: inline-block;
    background-color: var(--gray-color);
    color: white;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    margin: 0 0.5rem;
}

.secondary-button:hover {
    background-color: #5a6268;
    transform: translateY(-2px);
}

.bg-success {
    background-color: #10b981 !important;
}

.bg-warning {
    background-color: #f59e0b !important;
}

.qa-item {
    transition: all 0.3s ease;
}

.qa-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.modal-footer {
    border-top: 1px solid var(--gray-light);
    padding-top: 20px;
    margin-top: 20px;
}

/* 问答项目样式 */
.question-item {
    border: 1px solid var(--gray-light);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 15px;
    background: var(--light);
    transition: all 0.3s ease;
}

.question-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.question-item.answered {
    border-left: 4px solid var(--secondary);
}

.question-item.pending {
    border-left: 4px solid var(--warning);
}

.answer-content {
    background: #f8fff8;
    border: 1px solid #e6ffe6;
}

/* 浮动提示样式 */
.alert-floating {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}