/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #e0e7ff;
    --secondary-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-700);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
.header {
    text-align: center;
    padding: 40px 0;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 卡片通用样式 */
.form-card,
.result-card,
.countdown-card,
.policy-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 30px;
    margin-bottom: 24px;
}

/* 表单样式 */
.form-card h2,
.result-card h2,
.result-card h3,
.countdown-card h3,
.policy-card h2 {
    color: var(--gray-900);
    margin-bottom: 24px;
    font-size: 1.25rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group select,
.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: all 0.2s;
    background-color: white;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group.optional label {
    color: var(--gray-500);
}

.btn-primary {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

/* 结果展示 */
.result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.result-item {
    background: var(--gray-50);
    padding: 20px;
    border-radius: var(--radius-lg);
    text-align: center;
}

.result-item.highlight {
    background: linear-gradient(135deg, var(--primary-light) 0%, #c7d2fe 100%);
    border: 2px solid var(--primary-color);
}

.result-item .label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.result-item .value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.result-item.highlight .value {
    color: var(--primary-color);
    font-size: 1.75rem;
}

/* 倒计时样式 */
.countdown-card {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #0891b2 100%);
    color: white;
    text-align: center;
}

.countdown-card h3 {
    color: white !important;
    opacity: 0.9;
}

.countdown-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown-item .number {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.countdown-item .unit {
    font-size: 1rem;
    opacity: 0.8;
    margin-top: 5px;
}

/* 弹性退休选项 */
.section-desc {
    color: var(--gray-500);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.flexible-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.flexible-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: all 0.3s;
}

.flexible-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.flexible-card.early {
    border-color: var(--success-color);
}

.flexible-card.normal {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.flexible-card.late {
    border-color: var(--warning-color);
}

.card-header {
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-50);
}

.flexible-card.early .card-header {
    background: #d1fae5;
}

.flexible-card.normal .card-header {
    background: var(--primary-color);
}

.flexible-card.late .card-header {
    background: #fef3c7;
}

.badge {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
    background: white;
    color: var(--gray-700);
    font-weight: 600;
}

.badge.recommended {
    background: white;
    color: var(--primary-color);
}

.card-header .age {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.flexible-card.normal .card-header .age {
    color: white;
}

.card-body {
    padding: 16px;
    text-align: center;
}

.card-body .date {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.card-body .note {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* 政策说明 */
.policy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.policy-item {
    text-align: center;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: all 0.3s;
}

.policy-item:hover {
    background: var(--primary-light);
    transform: translateY(-4px);
}

.policy-item .icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.policy-item h4 {
    color: var(--gray-900);
    font-size: 1rem;
    margin-bottom: 8px;
}

.policy-item p {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.policy-item .detail {
    color: var(--gray-500);
    font-size: 0.8rem;
    font-weight: normal;
    margin-top: 4px;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 30px 0;
    color: white;
    opacity: 0.8;
}

.footer p {
    margin-bottom: 8px;
}

.footer .disclaimer {
    font-size: 0.85rem;
    opacity: 0.7;
}

.footer .copyright {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-top: 10px;
}

/* SEO内容区域样式 */
.content-section {
    margin-bottom: 24px;
}

.content-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 20px;
}

.content-card h2 {
    color: var(--gray-900);
    font-size: 1.25rem;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-light);
}

.content-card p {
    color: var(--gray-700);
    margin-bottom: 12px;
    line-height: 1.8;
}

.content-card ul {
    margin-left: 20px;
    margin-bottom: 16px;
}

.content-card li {
    color: var(--gray-700);
    margin-bottom: 8px;
    line-height: 1.6;
}

.content-card strong {
    color: var(--primary-color);
}

/* FAQ区域样式 */
.faq-section {
    margin-bottom: 24px;
}

.faq-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 30px;
}

.faq-card h2 {
    color: var(--gray-900);
    font-size: 1.25rem;
    margin-bottom: 24px;
    text-align: center;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 24px;
    border-left: 4px solid var(--primary-color);
}

.faq-item h3 {
    color: var(--gray-900);
    font-size: 1.1rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.faq-item p {
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 8px;
}

.faq-item ul {
    margin-left: 20px;
    margin-top: 8px;
}

.faq-item li {
    color: var(--gray-700);
    margin-bottom: 6px;
}

.faq-item strong {
    color: var(--primary-color);
}

/* 相关链接样式 */
.links-section {
    margin-bottom: 24px;
}

.links-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 30px;
}

.links-card h2 {
    color: var(--gray-900);
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.policy-links {
    list-style: none;
    margin: 0;
}

.policy-links li {
    margin-bottom: 12px;
    padding: 12px 16px;
    background: var(--gray-50);
    border-radius: var(--radius);
    transition: all 0.2s;
}

.policy-links li:hover {
    background: var(--primary-light);
    transform: translateX(5px);
}

.policy-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: block;
}

.policy-links a:hover {
    text-decoration: underline;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .content-card,
    .faq-card,
    .links-card {
        padding: 20px;
    }

    .faq-item {
        padding: 16px;
    }

    .content-card h2,
    .faq-card h2,
    .links-card h2 {
        font-size: 1.1rem;
    }

    .faq-item h3 {
        font-size: 1rem;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .header h1 {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .form-card,
    .result-card,
    .countdown-card,
    .policy-card {
        padding: 20px;
    }

    .result-grid {
        grid-template-columns: 1fr;
    }

    .countdown-grid {
        gap: 20px;
    }

    .countdown-item .number {
        font-size: 2.5rem;
    }

    .flexible-options {
        grid-template-columns: 1fr;
    }

    .policy-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .policy-grid {
        grid-template-columns: 1fr;
    }

    .countdown-grid {
        flex-direction: column;
        gap: 15px;
    }

    .countdown-item {
        flex-direction: row;
        justify-content: center;
        gap: 10px;
    }

    .countdown-item .number {
        font-size: 2rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-section {
    animation: fadeIn 0.5s ease-out;
}

/* 隐藏元素的过渡效果 */
.result-section {
    transition: opacity 0.3s ease;
}