/* 页面通用样式 */

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #1e88e515 0%, #1e88e525 100%);
    padding: 5rem 0 3rem;
    text-align: center;
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    box-shadow: var(--shadow-lg);
    z-index: 99;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* 活跃导航链接 */
.nav-menu a.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* 功能详情页样式 */
.features-detail-section {
    padding: 4rem 0;
    background: white;
}

.feature-detail-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.feature-detail-card:hover {
    box-shadow: var(--shadow-xl);
}

.feature-detail-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.feature-detail-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-detail-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.feature-detail-title h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-detail-title p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.feature-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.feature-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.feature-item ul {
    list-style: none;
    padding: 0;
}

.feature-item ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.feature-item ul li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 更新页面样式 */
.update-timeline {
    position: relative;
    padding: 2rem 0;
}

.update-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.timeline-item {
    position: relative;
    padding-left: 100px;
    margin-bottom: 3rem;
}

.timeline-icon {
    position: absolute;
    left: 20px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.timeline-content ul {
    list-style: none;
}

.timeline-content ul li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.timeline-content ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 邀请计划页面样式 */
.invite-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    margin-bottom: 3rem;
}

.invite-hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.invite-hero .highlight-number {
    font-size: 4rem;
    font-weight: 800;
    margin: 1rem 0;
}

.invite-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.invite-step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s;
}

.invite-step:hover {
    transform: translateY(-5px);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.invite-step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.invite-step p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.earnings-calculator {
    background: var(--bg-secondary);
    padding: 3rem;
    border-radius: 20px;
    margin: 3rem 0;
}

.calculator-header {
    text-align: center;
    margin-bottom: 2rem;
}

.calculator-header h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.calculator-result {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
}

.calculator-result .amount {
    font-size: 3rem;
    font-weight: 800;
    margin: 1rem 0;
}

/* 帮助中心样式 */
.help-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.help-category {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    cursor: pointer;
}

.help-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.help-category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.help-category-icon svg {
    width: 30px;
    height: 30px;
    color: white;
}

.help-category h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.help-category p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.help-category ul {
    list-style: none;
}

.help-category ul li {
    padding: 0.5rem 0;
    color: var(--text-light);
}

.help-category ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
}

.help-category ul li a:hover {
    color: var(--primary-color);
}

/* 搜索框 */
.search-box {
    max-width: 600px;
    margin: 2rem auto;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 1rem 3rem 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    transition: all 0.3s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.1);
}

.search-box button {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.3s;
}

.search-box button:hover {
    transform: translateY(-50%) scale(1.1);
}

/* FAQ 样式 */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 1.5rem 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    transition: background 0.3s;
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.faq-icon {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 2rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 关于我们页面样式 */
.about-intro {
    background: linear-gradient(135deg, #1e88e515 0%, #1e88e525 100%);
    padding: 4rem 0;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content p {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
}

.value-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

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

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

.value-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.value-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.team-section {
    background: var(--bg-secondary);
    padding: 4rem 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.team-member h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.team-member .role {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-member p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 政策页面样式 */
.policy-section {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 0;
}

.policy-content {
    background: white;
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.policy-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.policy-content h2:first-child {
    margin-top: 0;
}

.policy-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.policy-content p {
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.policy-content ul,
.policy-content ol {
    padding-left: 2rem;
    margin-bottom: 1.5rem;
}

.policy-content li {
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.policy-content strong {
    color: var(--primary-color);
    font-weight: 600;
}

.policy-update {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
}

.policy-update p {
    margin: 0;
    color: var(--text-secondary);
}

/* 创作指南样式 */
.guide-navigation {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 100px;
}

.guide-navigation h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.guide-navigation ul {
    list-style: none;
}

.guide-navigation li {
    margin-bottom: 0.5rem;
}

.guide-navigation a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    display: block;
    border-radius: 8px;
    transition: all 0.3s;
}

.guide-navigation a:hover,
.guide-navigation a.active {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.guide-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
}

.guide-content {
    background: white;
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.guide-section {
    margin-bottom: 3rem;
}

.guide-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.guide-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.guide-section p {
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.guide-tip {
    background: #e3f2fd;
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.guide-tip h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.guide-tip p {
    margin: 0;
    color: var(--text-secondary);
}

.guide-warning {
    background: #fff3e0;
    border-left: 4px solid #ff9800;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.guide-warning h4 {
    color: #ff9800;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.guide-warning p {
    margin: 0;
    color: var(--text-secondary);
}

.code-example {
    background: #f5f5f5;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    font-family: 'Courier New', monospace;
    overflow-x: auto;
}

/* 版本历史样式 */
.version-history-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.version-list {
    display: grid;
    gap: 2rem;
    margin-top: 3rem;
}

.version-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.version-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.version-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.version-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.version-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: auto;
}

.version-badge.latest {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.version-highlights h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.version-highlights ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
}

.version-highlights li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.version-highlights li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 更新订阅样式 */
.update-subscribe-section {
    padding: 4rem 0;
    background: white;
}

.subscribe-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.subscribe-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.subscribe-card p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.subscribe-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.subscribe-form input {
    flex: 1;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
}

.subscribe-form input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.subscribe-form button {
    padding: 0.875rem 2rem;
    background: white;
    color: var(--primary-color);
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.subscribe-form button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

/* 更新时间线样式 */
.updates-timeline-section {
    padding: 4rem 0;
    background: white;
}

/* 邀请计划专用样式 */
.how-it-works-section {
    padding: 4rem 0;
    background: white;
}

.section-intro {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.rewards-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.rewards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.reward-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.reward-card.highlight {
    background: linear-gradient(135deg, #fff5f5, #ffffff);
    border: 2px solid var(--primary-color);
}

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

.reward-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.reward-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.reward-percentage {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 1rem 0;
}

.reward-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.reward-example {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1.5rem;
}

.reward-example p {
    margin: 0.5rem 0;
    font-size: 0.9375rem;
}

.example-result {
    color: var(--text-primary);
    font-weight: 500;
}

.example-result span {
    color: var(--primary-color);
    font-weight: 700;
}

.coin-info-section {
    padding: 4rem 0;
    background: white;
}

.coin-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.coin-info-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.coin-info-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.coin-info-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.coin-info-card ul {
    list-style: none;
}

.coin-info-card ul li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.coin-info-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.calculator-inputs {
    display: flex;
    gap: 1.5rem;
    align-items: flex-end;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.input-group {
    flex: 1;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.input-group input {
    width: 100%;
    padding: 0.875rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.1);
}

.earnings-breakdown {
    background: white;
    padding: 2rem;
    border-radius: 12px;
}

.earnings-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.earnings-item:last-child {
    border-bottom: none;
}

.earnings-total {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem 0 0;
    margin-top: 1rem;
    border-top: 2px solid var(--primary-color);
    font-size: 1.25rem;
}

.promotion-methods-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.method-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

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

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

.method-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.method-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.notice-section {
    padding: 4rem 0;
    background: white;
}

.notice-box {
    background: #fff3e0;
    border-left: 4px solid #ff9800;
    padding: 2rem;
    border-radius: 12px;
    max-width: 900px;
    margin: 0 auto;
}

.notice-box h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ff9800;
    margin-bottom: 1.5rem;
}

.notice-box ul {
    list-style: none;
}

.notice-box ul li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.notice-box ul li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: #ff9800;
    font-weight: bold;
}

.success-stories-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.story-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

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

.story-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 1.5rem;
}

.story-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.story-earnings {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.story-earnings strong {
    color: var(--primary-color);
    font-weight: 700;
}

.story-text {
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

/* 帮助中心专用样式 */
.help-search-section {
    padding: 2rem 0 4rem;
    background: white;
}

.help-categories-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.popular-questions-section {
    padding: 4rem 0;
    background: white;
}

.popular-questions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.question-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.question-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.question-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.question-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.question-link {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
}

.question-link:hover {
    text-decoration: underline;
}

.contact-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.contact-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
}

.contact-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-card > p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.contact-method {
    text-align: center;
}

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

.contact-method h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-method p {
    color: var(--text-secondary);
}

/* FAQ专用样式 */
.faq-categories-section {
    padding: 2rem 0;
    background: white;
    border-bottom: 1px solid var(--border-color);
}

.faq-categories {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.faq-category-btn {
    padding: 0.625rem 1.5rem;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 50px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
}

.faq-category-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.faq-category-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: transparent;
    color: white;
}

.faq-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.no-answer-section {
    padding: 4rem 0;
    background: white;
}

.no-answer-card {
    background: linear-gradient(135deg, #1e88e515 0%, #1e88e525 100%);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.no-answer-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.no-answer-card p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-actions .btn-primary,
.contact-actions .btn-outline {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    border-radius: 50px;
    text-decoration: none;
}

/* 关于我们专用样式 */
.milestones-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 3rem auto 0;
    padding-left: 150px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 120px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.timeline-item-about {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-date {
    position: absolute;
    left: -150px;
    top: 0;
    width: 100px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: right;
}

.timeline-date::after {
    content: '';
    position: absolute;
    right: -30px;
    top: 8px;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 0 4px white, 0 0 0 6px var(--primary-color);
}

.timeline-content-about {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.timeline-content-about h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.timeline-content-about p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.stats-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.stat-card {
    text-align: center;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    opacity: 0.9;
}

.partners-section {
    padding: 4rem 0;
    background: white;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.partner-card {
    background: var(--bg-secondary);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.partner-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.partner-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.partner-card p {
    color: var(--text-secondary);
}

.contact-us-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.contact-us-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.contact-us-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-us-card > p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-item {
    text-align: center;
}

.contact-item-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-item p {
    color: var(--text-secondary);
}

.social-links {
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.social-links h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.social-icons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-icons a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.social-icons a:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 968px) {
    .guide-layout {
        grid-template-columns: 1fr;
    }

    .guide-navigation {
        position: static;
    }

    .page-title {
        font-size: 2rem;
    }

    .feature-detail-header {
        flex-direction: column;
        text-align: center;
    }

    .update-timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: 80px;
    }

    .timeline-icon {
        left: 0;
    }

    .timeline {
        padding-left: 60px;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-date {
        left: -60px;
        width: 80px;
        font-size: 0.875rem;
    }

    .timeline-date::after {
        right: -35px;
    }

    .calculator-inputs {
        flex-direction: column;
        align-items: stretch;
    }

    .subscribe-form {
        flex-direction: column;
    }

    /* 移动端隐藏语言切换按钮 */
    .language-switcher {
        display: none;
    }
}

@media (max-width: 640px) {
    .page-title {
        font-size: 1.75rem;
    }

    .page-subtitle {
        font-size: 1rem;
    }

    .feature-detail-card {
        padding: 2rem 1.5rem;
    }

    .feature-detail-icon {
        width: 60px;
        height: 60px;
    }

    .feature-detail-icon svg {
        width: 30px;
        height: 30px;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }

    .faq-categories {
        flex-direction: column;
        align-items: stretch;
    }

    .faq-category-btn {
        width: 100%;
    }

    .timeline {
        padding-left: 40px;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-date {
        position: static;
        margin-bottom: 0.5rem;
        text-align: left;
    }

    .timeline-date::after {
        display: none;
    }

    .contact-actions {
        flex-direction: column;
    }

    .contact-actions .btn-primary,
    .contact-actions .btn-outline {
        width: 100%;
    }
}