/* 股票公式网 - 主样式表 */
/* SEO 优化：快速加载，移动端友好 */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #f9fafb;
    --border-color: #e5e7eb;
    --white: #ffffff;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

/* Global Categories Section */
.categories-section-global {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 30px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* Header */
.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

.main-nav a {
    color: var(--text-color);
    font-weight: 500;
}

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

.user-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.search-form {
    display: flex;
    gap: 5px;
}

.search-form input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 200px;
}

.search-form button {
    padding: 8px 12px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-level {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
}

.points {
    color: var(--warning-color);
    font-weight: 600;
    font-size: 0.875rem;
}

.vip-badge {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: var(--white);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.auth-links {
    display: flex;
    gap: 10px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.btn:hover {
    text-decoration: none;
    opacity: 0.9;
}

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

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin: 15px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
}

.alert .close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.5;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Section Titles */
.section-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

/* Categories Grid */
.categories-section {
    margin-bottom: 40px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 15px;
}

.category-card {
    background: var(--white);
    padding: 12px 8px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

.category-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.category-card h4 {
    color: var(--text-color);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.category-card p {
    color: var(--text-light);
    font-size: 0.75rem;
    margin-bottom: 8px;
    display: none;
}

.formula-count {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Formula List */
.formulas-section {
    margin-bottom: 40px;
}

.formula-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Formula Grid Cards */
.formula-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* My Formulas Grid - 8 columns */
.my-formulas-grid {
    grid-template-columns: repeat(8, 1fr);
    gap: 15px;
}

.my-formulas-grid .formula-card {
    padding: 12px;
}

.my-formulas-grid .formula-card-title {
    font-size: 0.85rem;
}

.my-formulas-grid .formula-card-desc {
    font-size: 0.75rem;
    -webkit-line-clamp: 2;
}

.my-formulas-grid .formula-card-header {
    margin-bottom: 8px;
}

.my-formulas-grid .formula-card-footer {
    margin-bottom: 10px;
    font-size: 0.75rem;
}

.my-formulas-grid .formula-card-category {
    font-size: 0.65rem;
}

.formula-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.formula-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.formula-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.formula-card-category {
    font-size: 0.75rem;
    color: var(--text-light);
    background: var(--bg-color);
    padding: 4px 8px;
    border-radius: 4px;
}

.formula-card-title {
    font-size: 1rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.formula-card-title a {
    color: var(--text-color);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.formula-card-title a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.formula-card-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.formula-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.formula-card-meta {
    display: flex;
    align-items: center;
    gap: 4px;
}

.formula-item {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.formula-item.small {
    padding: 15px;
}

.formula-main {
    flex: 1;
}

.formula-main h4 {
    margin-bottom: 8px;
}

.formula-description {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.formula-meta {
    display: flex;
    gap: 15px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.formula-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-free {
    background: #d1fae5;
    color: #065f46;
}

.badge-vip {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: var(--white);
}

.badge-points {
    background: #dbeafe;
    color: #1e40af;
}

.badge-owned {
    background: #d1fae5;
    color: #065f46;
}

.badge-purchased {
    background: linear-gradient(135deg, #10b981, #059669);
    color: var(--white);
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* Section More */
.section-more {
    text-align: center;
    margin-top: 20px;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: var(--white);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    margin-bottom: 40px;
}

.cta-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.cta-content p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.cta-buttons .btn-outline {
    border-color: var(--white);
    color: var(--white);
}

/* Category Page */
.category-header {
    margin-bottom: 30px;
}

.breadcrumb {
    margin-bottom: 15px;
    color: var(--text-light);
    font-size: 0.875rem;
}

.category-description {
    color: var(--text-light);
    margin: 10px 0;
}

.category-stats {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Formula Article */
.formula-article {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.formula-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.formula-header h1 {
    font-size: 1.75rem;
    margin-bottom: 15px;
}

.ai-generate-btn {
    position: absolute;
    top: 0;
    right: 0;
}

.formula-content-wrapper {
    margin-bottom: 30px;
}

.formula-content {
    background: var(--bg-color);
    padding: 20px;
    border-radius: var(--radius);
}

/* Formula Intro Section */
.formula-intro-section {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
    border: 1px solid #bae6fd;
    border-radius: var(--radius);
    padding: 20px;
    margin: 20px 0;
}

.formula-intro-section h3 {
    margin: 0 0 15px 0;
    color: #0369a1;
    font-size: 1.1rem;
}

.intro-content {
    color: #334155;
    line-height: 1.8;
    font-size: 0.95rem;
}

.intro-content p {
    margin-bottom: 12px;
}

.intro-content strong {
    color: #0369a1;
}

.content-header {
    margin-bottom: 15px;
}

.formula-code {
    background: #1f2937;
    color: #10b981;
    padding: 20px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin-bottom: 20px;
}

.formula-code pre {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.formula-tips {
    background: #fef3c7;
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.formula-tips h4 {
    margin-bottom: 12px;
    color: #92400e;
}

.formula-tips ol {
    margin-left: 20px;
    color: #78350f;
}

.formula-tips li {
    padding: 5px 0;
    line-height: 1.6;
}

.formula-tips kbd {
    background: #fff;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #d1d5db;
    font-family: monospace;
    font-size: 0.875rem;
}

.formula-actions-bar {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}

/* Locked Content */
.formula-locked {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-color);
    border-radius: var(--radius);
}

.lock-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.formula-locked h3 {
    margin-bottom: 15px;
}

.formula-locked p {
    margin-bottom: 20px;
    color: var(--text-light);
}

.user-points {
    background: var(--white);
    padding: 15px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.insufficient-points,
.login-prompt {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-color);
    border-radius: var(--radius);
}

.empty-state p {
    margin-bottom: 20px;
    color: var(--text-light);
}

/* VIP Promo */
.vip-promo {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 30px;
}

.vip-promo h4 {
    margin-bottom: 15px;
}

.vip-promo ul {
    list-style: none;
    margin-bottom: 20px;
}

.vip-promo li {
    padding: 5px 0;
}

/* Related Formulas */
.related-formulas {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.related-formulas h3 {
    margin-bottom: 20px;
}

.related-formulas .formula-grid {
    grid-template-columns: repeat(4, 1fr);
}

/* User Center */
.user-center {
    display: grid;
    gap: 30px;
}

.user-profile {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.avatar {
    font-size: 4rem;
    background: var(--bg-color);
    padding: 20px;
    border-radius: 50%;
}

.profile-info h2 {
    margin-bottom: 5px;
}

.profile-info p {
    color: var(--text-light);
}

.join-date {
    font-size: 0.875rem;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-color);
    padding: 20px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    font-size: 2.5rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Level Badge Styles */
.level-bronze { color: #cd7f32; }
.level-silver { color: #c0c0c0; }
.level-gold { color: #ffd700; }
.level-platinum { color: #00ced1; }
.level-diamond { color: #b9f2ff; }
.level-starry { color: #9370db; }
.level-king { color: #ff6b6b; }

.profile-actions {
    display: flex;
    gap: 15px;
}

/* My Formulas Section */
.my-formulas {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.my-formulas h3 {
    margin-bottom: 20px;
}

/* VIP Packages */
.vip-packages {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.vip-packages h3 {
    margin-bottom: 20px;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.package-card {
    background: var(--bg-color);
    padding: 25px;
    border-radius: var(--radius);
    text-align: center;
    position: relative;
    border: 2px solid transparent;
}

.package-card.popular {
    border-color: var(--primary-color);
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.package-card h4 {
    margin-bottom: 15px;
}

.package-card .price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.package-card .price span {
    font-size: 1rem;
    color: var(--text-light);
}

.package-card .points {
    font-size: 1.25rem;
    color: var(--warning-color);
    margin-bottom: 20px;
}

.package-card ul {
    list-style: none;
    text-align: left;
    margin-bottom: 20px;
}

.package-card li {
    padding: 8px 0;
    font-size: 0.875rem;
}

/* Transaction Table */
.transaction-history {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.transaction-history h3 {
    margin-bottom: 20px;
}

.transaction-table {
    width: 100%;
    border-collapse: collapse;
}

.transaction-table th,
.transaction-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.transaction-table th {
    background: var(--bg-color);
    font-weight: 600;
}

.positive {
    color: var(--secondary-color);
}

.negative {
    color: var(--danger-color);
}

/* Recharge */
.recharge-container {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    max-width: 800px;
    margin: 0 auto;
}

.recharge-container h2 {
    text-align: center;
    margin-bottom: 10px;
}

.current-points {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 30px;
}

.recharge-packages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.custom-recharge {
    background: var(--bg-color);
    padding: 25px;
    border-radius: var(--radius);
    margin-bottom: 30px;
}

.custom-form {
    display: grid;
    gap: 15px;
    max-width: 400px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
}

.form-group small {
    display: block;
    color: var(--text-light);
    font-size: 0.75rem;
    margin-top: 5px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: normal;
}

.recharge-info {
    background: #fef3c7;
    padding: 20px;
    border-radius: var(--radius);
}

.recharge-info h4 {
    margin-bottom: 10px;
}

.recharge-info ul {
    margin-left: 20px;
}

.recharge-info li {
    padding: 5px 0;
}

/* Search Page */
.search-page {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.search-header {
    margin-bottom: 30px;
}

.search-header h1 {
    margin-bottom: 20px;
}

.search-form-large {
    display: flex;
    gap: 10px;
}

.search-form-large input {
    flex: 1;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
}

.results-count {
    margin-bottom: 20px;
    color: var(--text-light);
}

.no-results {
    text-align: center;
    padding: 40px 20px;
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.no-results h3 {
    margin-bottom: 15px;
}

.no-results ul {
    text-align: left;
    max-width: 400px;
    margin: 20px auto;
}

.no-results li {
    padding: 5px 0;
}

.search-tips {
    text-align: center;
}

.search-tips h3 {
    margin: 30px 0 15px;
}

.search-tips ul {
    text-align: left;
    max-width: 400px;
    margin: 0 auto 30px;
}

.hot-searches {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.search-tag {
    background: var(--bg-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 30px;
}

.page-info {
    color: var(--text-light);
}

/* Footer */
.site-footer {
    background: #1f2937;
    color: #9ca3af;
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 15px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    padding: 5px 0;
}

.footer-col a {
    color: #9ca3af;
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #374151;
}

.footer-bottom p {
    margin: 5px 0;
}

.disclaimer {
    font-size: 0.875rem;
    color: #6b7280;
}

/* Auth Pages */
.auth-container {
    max-width: 400px;
    margin: 40px auto;
}

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

.auth-card h2 {
    text-align: center;
    margin-bottom: 10px;
}

.register-benefit {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 20px;
}

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

.auth-card .btn-block {
    margin-top: 10px;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.auth-footer p {
    margin: 10px 0;
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .user-actions {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .formula-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .formula-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .packages-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .formula-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* ========================================
   风险提示和免责声明样式
   ======================================== */

.risk-disclaimer {
    margin: 30px 0;
    padding: 25px;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 12px;
    border: 2px solid #f59e0b;
    box-shadow: 0 4px 6px rgba(245, 158, 11, 0.15);
}

.risk-disclaimer h4 {
    color: #92400e;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 15px 0;
    padding-bottom: 10px;
    border-bottom: 2px solid #f59e0b;
    display: flex;
    align-items: center;
    gap: 8px;
}

.disclaimer-content {
    color: #78350f;
    line-height: 1.8;
}

.disclaimer-content p {
    margin: 10px 0;
}

.disclaimer-content strong {
    color: #92400e;
    font-weight: 600;
}

.disclaimer-content ul {
    margin: 15px 0;
    padding-left: 25px;
}

.disclaimer-content li {
    margin: 8px 0;
    position: relative;
    padding-left: 5px;
}

.disclaimer-content li::marker {
    color: #f59e0b;
    font-weight: bold;
}

.disclaimer-note {
    margin-top: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    border-left: 4px solid #dc2626;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .risk-disclaimer {
        padding: 20px;
    }
    
    .risk-disclaimer h4 {
        font-size: 1.1rem;
    }
    
    .disclaimer-content {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .risk-disclaimer {
        padding: 15px;
    }
    
    .risk-disclaimer h4 {
        font-size: 1rem;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .disclaimer-note {
        font-size: 0.85rem;
        padding: 10px;
    }
}

/* ========================================
   公式介绍模块优化样式
   ======================================== */

.formula-intro-section {
    margin: 30px 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #3b82f6;
    display: inline-block;
}

.intro-card {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 16px;
    padding: 30px;
    border: 2px solid #bae6fd;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 10px 15px rgba(59, 130, 246, 0.1);
}

.intro-main {
    margin-bottom: 25px;
}

.intro-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #374151;
    margin: 0;
    padding: 0;
}

/* 统计数据网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.stat-item {
    background: white;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.12);
}

.stat-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-label {
    font-size: 0.875rem;
    color: #6b7280;
    font-weight: 500;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    line-height: 1.4;
    word-wrap: break-word;
}

/* 不同统计项的颜色主题 */
.stat-win {
    border-left: 4px solid #10b981;
    background: linear-gradient(to right, #f0fdf4, white);
}

.stat-win .stat-icon {
    filter: drop-shadow(0 2px 3px rgba(16, 185, 129, 0.3));
}

.stat-win .stat-value {
    color: #059669;
}

.stat-user {
    border-left: 4px solid #3b82f6;
    background: linear-gradient(to right, #eff6ff, white);
}

.stat-user .stat-icon {
    filter: drop-shadow(0 2px 3px rgba(59, 130, 246, 0.3));
}

.stat-user .stat-value {
    color: #2563eb;
}

.stat-time {
    border-left: 4px solid #f59e0b;
    background: linear-gradient(to right, #fffbeb, white);
}

.stat-time .stat-icon {
    filter: drop-shadow(0 2px 3px rgba(245, 158, 11, 0.3));
}

.stat-time .stat-value {
    color: #d97706;
}

/* 免责声明 */
.intro-disclaimer {
    margin-top: 25px;
    padding: 15px 20px;
    background: #fef3c7;
    border-radius: 10px;
    border-left: 4px solid #f59e0b;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
}

.disclaimer-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.disclaimer-text {
    color: #92400e;
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .intro-card {
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: 15px;
    }
    
    .stat-icon {
        font-size: 2rem;
    }
    
    .stat-value {
        font-size: 1rem;
    }
    
    .intro-disclaimer {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.25rem;
    }
    
    .intro-text {
        font-size: 1rem;
    }
}