/* ========================================
   心理咨询平台 - 主样式文件
   ======================================== */

/* CSS变量定义 */
:root {
    /* 主色调 - 温馨暖色系 */
    --color-primary: #FF9A8B;
    --color-primary-light: #FFB4A8;
    --color-primary-dark: #E87F70;

    /* 辅助色 - 柔和粉 */
    --color-secondary: #F8B4D9;
    --color-secondary-light: #FFCDE8;

    /* 点缀色 */
    --color-accent: #FFD700;
    --color-success: #7BC67E;
    --color-warning: #F5C26B;

    /* 中性色 */
    --color-text: #2C3E50;
    --color-text-secondary: #7F8C8D;
    --color-text-light: #BDC3C7;
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F8F9FA;
    --color-bg-tertiary: #EEF2F5;
    --color-border: #E0E6EB;

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 50%;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

    /* 过渡 */
    --transition: 0.3s ease;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

ul, ol {
    list-style: none;
}

[v-cloak] {
    display: none;
}

/* 容器 */
.container {
    max-width: 750px;
    margin: 0 auto;
    background: var(--color-bg);
    padding-bottom: 70px;
}

/* ========================================
   第一行：搜索栏 + 签到
   ======================================== */
.home-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: sticky;
    top: 0;
    z-index: 100;
}

.search-bar {
    flex: 1;
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.95);
    border-radius: 25px;
    padding: 0 var(--spacing-md);
    height: 44px;
    box-shadow: var(--shadow-sm);
}

.search-bar .search-icon {
    width: 20px;
    height: 20px;
    color: var(--color-text-secondary);
    margin-right: var(--spacing-sm);
}

.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 14px;
    background: transparent;
    color: var(--color-text);
}

.search-bar input::placeholder {
    color: var(--color-text-light);
}

.sign-in-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 44px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    color: white;
    font-size: 12px;
    transition: var(--transition);
}

.sign-in-btn:hover {
    background: rgba(255,255,255,0.3);
}

.sign-in-btn .sign-icon {
    width: 20px;
    height: 20px;
    margin-bottom: 2px;
}

.sign-in-btn.signed {
    background: rgba(255,255,255,0.9);
    color: var(--color-primary);
}

/* 用户入口 */
.user-entry {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.user-entry:hover {
    background: rgba(255,255,255,0.3);
}

.user-nickname {
    font-size: 14px;
    font-weight: 500;
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.login-entry {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    color: white;
    text-decoration: none;
    font-size: 12px;
    transition: var(--transition);
}

.login-entry:hover {
    background: rgba(255,255,255,0.3);
}

.login-entry svg {
    width: 20px;
    height: 20px;
    margin-bottom: 2px;
}

/* ========================================
   第二行：心理咨询宣传Banner
   ======================================== */
.consult-banner {
    position: relative;
    margin: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.consult-banner img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.consult-banner .banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,154,139,0.85) 0%, rgba(248,180,217,0.85) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
    padding: var(--spacing-lg);
}

.consult-banner .banner-heart-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.consult-banner h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.consult-banner p {
    font-size: 14px;
    opacity: 0.9;
}

/* ========================================
   第三行：快捷链接 (课程/活动)
   ======================================== */
.quick-links {
    display: flex;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.quick-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    height: 56px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    color: white;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.quick-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quick-link .link-icon {
    width: 24px;
    height: 24px;
}

.quick-link .link-decor-icon {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 16px;
    height: 16px;
    opacity: 0.6;
}

.quick-link.course-link {
    background: linear-gradient(135deg, #FF9A8B 0%, #FFB4A8 100%);
}

.quick-link.activity-link {
    background: linear-gradient(135deg, #F8B4D9 0%, #FFCDE8 100%);
}

/* ========================================
   第四行：功能按钮 (专家/视频/活动)
   ======================================== */
.feature-buttons {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--color-bg);
}

.feature-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
}

.feature-btn:hover {
    transform: translateY(-2px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.feature-icon img {
    width: 28px;
    height: 28px;
}

.feature-btn.expert .feature-icon {
    background: linear-gradient(135deg, #FF9A8B 0%, #FFB4A8 100%);
}

.feature-btn.video .feature-icon {
    background: linear-gradient(135deg, #FFD700 0%, #FFE55C 100%);
}

.feature-btn.activity .feature-icon {
    background: linear-gradient(135deg, #F8B4D9 0%, #FFCDE8 100%);
}

.feature-btn span {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ========================================
   第五行：轮播图
   ======================================== */
.carousel-section {
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.carousel-banner {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.carousel-banner .swiper-slide img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.carousel-banner .swiper-pagination-bullet {
    background: white;
    opacity: 0.6;
}

.carousel-banner .swiper-pagination-bullet-active {
    opacity: 1;
    background: var(--color-primary);
}

/* ========================================
   通用区块样式
   ======================================== */
.section {
    padding: var(--spacing-lg) var(--spacing-md);
    background: var(--color-bg);
    margin-bottom: var(--spacing-sm);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    position: relative;
    padding-left: var(--spacing-md);
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 18px;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 2px;
}

.more-link {
    font-size: 13px;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.more-link:hover {
    color: var(--color-primary);
}

/* ========================================
   第六行：专家推荐
   ======================================== */
.expert-slider .swiper {
    overflow: visible;
}

.expert-slider .expert-card {
    width: 280px;
    height: 480px;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.expert-slider .expert-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto var(--spacing-md);
    border: 3px solid var(--color-primary-light);
}

.expert-slider .expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-slider .expert-info {
    text-align: center;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.expert-slider .expert-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.expert-slider .expert-specialty {
    font-size: 13px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.expert-slider .expert-intro {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.expert-slider .expert-price {
    font-size: 14px;
}

.expert-slider .expert-price .price-label {
    color: var(--color-text-secondary);
}

.expert-slider .expert-price .price-value {
    color: var(--color-accent);
    font-weight: 600;
    margin-left: var(--spacing-xs);
}

.expert-slider .expert-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.expert-actions .btn {
    flex: 1;
    height: 36px;
    border-radius: 18px;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 4px 12px rgba(255,154,139,0.4);
}

.btn-outline {
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    background: white;
}

.btn-outline:hover {
    background: var(--color-bg-tertiary);
}

/* ========================================
   第七/八行：活动精选 & 热门课程
   ======================================== */
.card-slider .swiper {
    overflow: visible;
}

.item-card {
    width: 160px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.item-card .card-image {
    width: 100%;
    height: 100px;
    overflow: hidden;
}

.item-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.item-card:hover .card-image img {
    transform: scale(1.05);
}

.item-card .card-content {
    padding: var(--spacing-sm) var(--spacing-md);
}

.item-card .card-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-card .card-price {
    font-size: 14px;
    color: var(--color-accent);
    font-weight: 600;
}

.item-card .card-price .free {
    color: var(--color-success);
}

/* ========================================
   第九行：心理文章 - 横向列表布局
   ======================================== */
.article-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.article-item {
    display: flex;
    flex-direction: row;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.04);
    align-items: center;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
}

.article-item:hover {
    transform: translateX(4px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
    border-color: rgba(74, 144, 164, 0.2);
}

.article-image {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-item:hover .article-image img {
    transform: scale(1.1);
}

.article-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.article-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    letter-spacing: -0.2px;
}

.article-summary {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.article-meta {
    font-size: 12px;
    color: var(--color-text-secondary);
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
    padding-top: 8px;
}

.article-meta .article-views {
    color: var(--color-primary);
    font-weight: 500;
}

/* ========================================
   首页文章列表样式
   ======================================== */
.home-article-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.home-article-item {
    display: flex;
    flex-direction: row;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.04);
    align-items: center;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
}

.home-article-item:hover {
    transform: translateX(4px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
    border-color: rgba(74, 144, 164, 0.2);
}

.home-article-image {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.home-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.home-article-item:hover .home-article-image img {
    transform: scale(1.1);
}

.home-article-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.home-article-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    letter-spacing: -0.2px;
}

.home-article-summary {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.home-article-meta {
    font-size: 12px;
    color: var(--color-text-secondary);
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
    padding-top: 8px;
}

.home-article-meta .home-article-views {
    color: var(--color-primary);
    font-weight: 500;
}

/* ========================================
   第十行：会员商城入口
   ======================================== */
.mall-entry {
    margin: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.mall-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.mall-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.mall-content .mall-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mall-content .mall-icon img {
    width: 28px;
    height: 28px;
}

.mall-text h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
}

.mall-text p {
    font-size: 13px;
    opacity: 0.9;
}

.mall-link .arrow-icon {
    width: 24px;
    height: 24px;
    opacity: 0.8;
}

/* ========================================
   底部安全区域
   ======================================== */
.safe-area-bottom {
    height: env(safe-area-inset-bottom, 20px);
    background: var(--color-bg);
}

/* ========================================
   Swiper自定义样式
   ======================================== */
.swiper-slide {
    width: auto;
}

/* ========================================
   响应式适配
   ======================================== */
@media (min-width: 768px) {
    .container {
        max-width: 750px;
    }

    .expert-slider .expert-card {
        width: 300px;
    }

    .item-card {
        width: 180px;
    }

    .item-card .card-image {
        height: 120px;
    }
}

/* ========================================
   通用页面头部
   ======================================== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: sticky;
    top: 0;
    z-index: 100;
}

.back-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

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

.back-btn.white {
    color: white;
}

.page-title {
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.header-search {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
}

.header-search svg {
    width: 22px;
    height: 22px;
}

/* ========================================
   分类筛选
   ======================================== */
.category-tabs {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 68px;
    z-index: 99;
}

.category-scroll {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.category-scroll::-webkit-scrollbar {
    display: none;
}

.category-tab {
    flex-shrink: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 20px;
    font-size: 14px;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    cursor: pointer;
    transition: var(--transition);
}

.category-tab:hover {
    color: var(--color-primary);
}

.category-tab.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
}

/* ========================================
   课程列表页
   ======================================== */
.course-list {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.course-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
}

.course-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.course-cover {
    position: relative;
    height: 160px;
    overflow: hidden;
}

.course-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    color: white;
}

.course-badge.free {
    background: var(--color-success);
}

.course-badge.discount {
    background: var(--color-accent);
}

.course-info {
    padding: var(--spacing-md);
}

.course-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-subtitle {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.instructor {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.instructor-avatar {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.instructor span {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--color-text-light);
}

.rating {
    display: flex;
    align-items: center;
    gap: 2px;
    color: var(--color-warning);
}

.rating svg {
    width: 14px;
    height: 14px;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.course-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.course-price .price {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-accent);
}

.course-price .price.free {
    color: var(--color-success);
}

.course-price .original-price {
    font-size: 13px;
    color: var(--color-text-light);
    text-decoration: line-through;
}

.lesson-info {
    font-size: 12px;
    color: var(--color-text-light);
}

/* 加载状态 */
.loading-more, .no-more, .empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    color: var(--color-text-light);
    font-size: 14px;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.empty-state {
    flex-direction: column;
    padding: var(--spacing-xl) * 2;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* 搜索弹窗 */
.search-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
}

.search-modal-content {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    width: calc(100% - 32px);
    max-width: 400px;
    display: flex;
    gap: var(--spacing-sm);
}

.search-input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-md);
    height: 44px;
}

.search-input-wrapper svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-light);
    margin-right: var(--spacing-sm);
}

.search-input-wrapper input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 15px;
}

.clear-btn {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    cursor: pointer;
    font-size: 18px;
}

.search-btn {
    padding: 0 var(--spacing-lg);
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
}

/* ========================================
   课程详情页
   ======================================== */
.course-detail-header {
    position: relative;
    height: 240px;
}

.header-nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md);
    z-index: 10;
}

.share-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-full);
}

.share-btn svg {
    width: 20px;
    height: 20px;
}

.course-cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cover-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to top, var(--color-bg), transparent);
}

.course-detail-info {
    padding: var(--spacing-md);
    margin-top: -40px;
    position: relative;
    background: var(--color-bg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.course-badges {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.badge.free {
    background: rgba(123, 198, 126, 0.15);
    color: var(--color-success);
}

.badge.discount {
    background: rgba(232, 168, 124, 0.15);
    color: var(--color-accent);
}

.badge.category {
    background: rgba(74, 144, 164, 0.15);
    color: var(--color-primary);
}

.course-detail-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.course-detail-subtitle {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.course-stats {
    display: flex;
    gap: var(--spacing-lg);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 13px;
    color: var(--color-text-secondary);
}

.stat-item svg {
    width: 16px;
    height: 16px;
}

.stat-item:first-child svg {
    color: var(--color-warning);
}

/* 讲师卡片 */
.instructor-card {
    margin: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
}

.instructor-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.instructor-avatar-lg {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-primary-light);
}

.instructor-info .instructor-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}

.instructor-info .instructor-title {
    font-size: 13px;
    color: var(--color-primary);
}

.instructor-bio {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 课程Tabs */
.course-tabs {
    background: var(--color-bg);
}

.tab-headers {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    padding: 0 var(--spacing-md);
}

.tab-header {
    flex: 1;
    text-align: center;
    padding: var(--spacing-md) 0;
    font-size: 15px;
    color: var(--color-text-secondary);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.tab-header.active {
    color: var(--color-primary);
    font-weight: 500;
}

.tab-header.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.tab-content {
    padding: var(--spacing-md);
}

.tab-pane {
    min-height: 200px;
}

.course-description {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.8;
}

/* 课程大纲 */
.outline-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.outline-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.lesson-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
}

.lesson-info {
    flex: 1;
}

.lesson-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 2px;
}

.lesson-duration {
    font-size: 12px;
    color: var(--color-text-light);
}

.lesson-free {
    padding: 4px 8px;
    background: rgba(123, 198, 126, 0.15);
    color: var(--color-success);
    font-size: 12px;
    border-radius: 4px;
}

/* 学员评价 */
.review-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.review-item {
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

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

.review-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.reviewer-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.reviewer-info {
    flex: 1;
}

.reviewer-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.review-rating {
    display: flex;
    gap: 2px;
    margin-top: 2px;
}

.review-rating svg {
    width: 14px;
    height: 14px;
    color: var(--color-warning);
}

.review-date {
    font-size: 12px;
    color: var(--color-text-light);
}

.review-content {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 底部购买栏 */
.purchase-bar {
    position: fixed;
    bottom: calc(56px + env(safe-area-inset-bottom, 0));
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.price-section {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
}

.current-price {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-accent);
}

.current-price.free {
    color: var(--color-success);
}

.purchase-bar .original-price {
    font-size: 14px;
    color: var(--color-text-light);
    text-decoration: line-through;
}

.purchase-btn {
    padding: 0 var(--spacing-xl);
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: 22px;
    font-size: 16px;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(255,154,139,0.4);
}

/* 为底部购买栏留出空间 */
.course-tabs {
    padding-bottom: 140px;
}

/* ========================================
   活动列表页
   ======================================== */
.type-filter {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg);
}

.type-tag {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    cursor: pointer;
    transition: var(--transition);
}

.type-tag.active {
    background: var(--color-primary);
    color: white;
}

.activity-list {
    padding: var(--spacing-md);
    padding-bottom: 20px;
}

.activity-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
}

.activity-card:active {
    transform: scale(0.98);
}

.activity-cover {
    position: relative;
    height: 160px;
}

.activity-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.activity-badges {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
}

.activity-badges .badge.type {
    background: rgba(0,0,0,0.6);
    color: white;
}

.activity-badges .badge.type.online {
    background: rgba(74, 144, 164, 0.9);
}

.activity-badges .badge.type.offline {
    background: rgba(155, 138, 196, 0.9);
}

.activity-date-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.activity-date-badge .month {
    display: block;
    font-size: 11px;
    color: var(--color-primary);
    font-weight: 500;
}

.activity-date-badge .day {
    display: block;
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1;
}

.activity-info {
    padding: var(--spacing-md);
}

.activity-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-subtitle {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.activity-meta .location,
.activity-meta .participants {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-text-light);
}

.activity-meta svg {
    width: 14px;
    height: 14px;
}

.activity-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.activity-time {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-text-secondary);
}

.activity-time svg {
    width: 14px;
    height: 14px;
}

.activity-price {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.activity-price .price {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-accent);
}

.activity-price .price.free {
    color: var(--color-success);
}

.activity-price .original-price {
    font-size: 12px;
    color: var(--color-text-light);
    text-decoration: line-through;
}

/* ========================================
   活动详情页
   ======================================== */
.activity-detail-header {
    position: relative;
    height: 240px;
}

.activity-cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.activity-status-badge {
    position: absolute;
    bottom: 60px;
    right: var(--spacing-md);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: white;
}

.activity-status-badge.enrolling {
    background: var(--color-success);
}

.activity-status-badge.ongoing {
    background: var(--color-primary);
}

.activity-status-badge.full {
    background: var(--color-warning);
}

.activity-status-badge.enroll-closed,
.activity-status-badge.ended {
    background: var(--color-text-light);
}

.activity-detail-info {
    padding: var(--spacing-md);
    margin-top: -40px;
    position: relative;
    background: var(--color-bg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.activity-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.activity-badges-row .badge.type.online {
    background: rgba(74, 144, 164, 0.15);
    color: var(--color-primary);
}

.activity-badges-row .badge.type.offline {
    background: rgba(155, 138, 196, 0.15);
    color: var(--color-secondary);
}

.activity-detail-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.activity-detail-subtitle {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* 关键信息区块 */
.activity-key-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    gap: var(--spacing-md);
}

.info-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.info-icon svg {
    width: 20px;
    height: 20px;
}

.info-icon.time {
    background: rgba(74, 144, 164, 0.15);
    color: var(--color-primary);
}

.info-icon.location {
    background: rgba(155, 138, 196, 0.15);
    color: var(--color-secondary);
}

.info-icon.people {
    background: rgba(232, 168, 124, 0.15);
    color: var(--color-accent);
}

.info-icon.deadline {
    background: rgba(245, 194, 107, 0.15);
    color: var(--color-warning);
}

.info-content {
    flex: 1;
}

.info-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 2px;
}

.info-value {
    font-size: 14px;
    color: var(--color-text);
    font-weight: 500;
}

.info-value .highlight {
    color: var(--color-accent);
    font-size: 18px;
    font-weight: 600;
}

.info-detail {
    display: block;
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: 3px;
    margin-top: var(--spacing-xs);
    overflow: hidden;
}

.progress-bar .progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* 组织者卡片 */
.organizer-card {
    margin: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
}

.organizer-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.organizer-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-secondary-light);
}

.organizer-info .organizer-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}

.organizer-info .organizer-title {
    font-size: 13px;
    color: var(--color-secondary);
}

.organizer-bio {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 活动内容区块 */
.activity-content-section {
    padding: var(--spacing-md);
    background: var(--color-bg);
}

.section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-sm);
    border-left: 3px solid var(--color-primary);
}

.activity-description {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.8;
}

/* 报名须知 */
.notice-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.notice-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.notice-number {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

.notice-item span:last-child {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* 底部报名栏 */
.enroll-bar {
    position: fixed;
    bottom: calc(56px + env(safe-area-inset-bottom, 0));
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.enroll-btn {
    padding: 0 var(--spacing-xl);
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: 22px;
    font-size: 16px;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(255,154,139,0.4);
}

.enroll-btn.disabled {
    background: var(--color-text-light);
    box-shadow: none;
    cursor: not-allowed;
}

/* 为底部报名栏留出空间 */
.activity-content-section:last-of-type {
    padding-bottom: 160px;
}

/* ========================================
   专家列表页
   ======================================== */
.expert-list {
    padding: var(--spacing-md);
}

.expert-list .expert-card {
    width: 100%;
    height: auto;
    display: block;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
    overflow: visible;
}

.expert-list .expert-info {
    flex: 1;
    min-width: 0;
    display: block;
    text-align: left;
    margin-bottom: 0;
    flex-grow: 0;
    overflow: visible;
}

.expert-list .expert-avatar {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-primary-light);
    margin: 0;
}

.expert-list .expert-card:active {
    transform: scale(0.98);
}

.expert-list .expert-main {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.expert-list .expert-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.expert-list .expert-avatar {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-primary-light);
    margin: 0;
}

.expert-list .online-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    background: var(--color-success);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    border: 2px solid white;
}

.expert-list .expert-info {
    flex: 1;
    min-width: 0;
}

.expert-list .expert-name-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.expert-list .expert-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
}

.expert-list .expert-title {
    font-size: 12px;
    color: var(--color-primary);
    background: rgba(74, 144, 164, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
}

.expert-list .expert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.expert-list .expert-tag {
    font-size: 12px;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
}

.expert-list .expert-stats {
    display: flex;
    gap: var(--spacing-md);
}

.expert-list .expert-stats .stat {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-text-light);
}

.expert-list .expert-stats .stat svg {
    width: 14px;
    height: 14px;
}

.expert-list .expert-stats .stat.good-rate {
    color: var(--color-success);
}

.expert-list .expert-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.expert-list .expert-actions {
    display: flex;
    gap: 8px;
}

.expert-list .expert-price {
    display: flex;
    flex-direction: column;
}

.expert-list .price-label {
    font-size: 12px;
    color: var(--color-text-light);
}

.expert-list .price-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-accent);
}

.expert-list .price-value small {
    font-size: 12px;
    font-weight: normal;
}

.expert-list .consult-btn {
    padding: 10px 20px;
    color: white;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.expert-list .consult-btn.primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.expert-list .consult-btn.secondary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
}

/* 专家详情页 */
.page-header.transparent {
    background: transparent;
}

.expert-detail-header {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding-top: 60px;
}

.expert-profile {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.avatar-section {
    position: relative;
}

.expert-avatar-lg {
    width: 90px;
    height: 90px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid white;
}

.online-status {
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-success);
    color: white;
    font-size: 11px;
    padding: 2px 10px;
    border-radius: 10px;
}

.profile-info {
    flex: 1;
    color: white;
}

.expert-name-lg {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.expert-title-lg {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.expert-certs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.cert-tag {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    background: rgba(255,255,255,0.2);
    padding: 4px 10px;
    border-radius: 12px;
}

.cert-tag svg {
    width: 12px;
    height: 12px;
}

.expert-data-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: 0 calc(-1 * var(--spacing-md));
    margin-bottom: calc(-1 * var(--spacing-md));
}

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

.data-value {
    display: block;
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
}

.data-value small {
    font-size: 12px;
    font-weight: normal;
}

.data-card.highlight .data-value {
    color: var(--color-accent);
}

.data-label {
    font-size: 11px;
    color: var(--color-text-light);
}

.expert-section {
    padding: var(--spacing-md);
    background: var(--color-bg);
}

.specialty-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.specialty-tag {
    padding: 8px 16px;
    background: rgba(74, 144, 164, 0.1);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 14px;
}

.expert-introduction, .education-content {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.8;
}

.consult-notice {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.notice-row {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.notice-icon {
    font-size: 24px;
    width: 40px;
    text-align: center;
}

.notice-content {
    flex: 1;
}

.notice-title {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 2px;
}

.notice-desc {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.consult-bar {
    position: fixed;
    bottom: calc(56px + env(safe-area-inset-bottom, 0));
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.consult-price {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-accent);
}

.price-unit {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
}

.action-btn svg {
    width: 18px;
    height: 18px;
}

.action-btn.secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
}

.follow-btn {
    padding: 8px 20px;
    background: var(--color-primary);
    color: white;
    border-radius: 20px;
    font-size: 14px;
}

/* 为底部栏留出空间 */
.expert-section:last-of-type {
    padding-bottom: 160px;
}

/* ========================================
   文章列表页
   ======================================== */
.article-list {
    padding: var(--spacing-md);
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
}

.article-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
    border-color: rgba(74, 144, 164, 0.2);
}

.article-card:active {
    transform: scale(0.98);
}

.article-card.featured {
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-bg) 0%, rgba(74, 144, 164, 0.03) 100%);
}

.article-card.featured:hover {
    background: linear-gradient(135deg, var(--color-bg) 0%, rgba(74, 144, 164, 0.06) 100%);
}

.article-cover-lg {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.article-cover-lg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-card:hover .article-cover-lg img {
    transform: scale(1.08);
}

.top-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent) 0%, #F5C26B 100%);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(232, 168, 124, 0.4);
    z-index: 1;
}

.article-content {
    padding: var(--spacing-lg);
}

.article-category {
    font-size: 12px;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
    background: rgba(74, 144, 164, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

.article-title-lg {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    letter-spacing: -0.3px;
}

.article-summary {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar-sm {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-primary-light);
}

.author-info span {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.article-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--color-text-secondary);
}

.article-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.article-stats svg {
    width: 16px;
    height: 16px;
    stroke: var(--color-primary);
}

/* 普通文章卡片 */
.article-card:not(.featured) {
    display: flex;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
    align-items: center;
}

.article-card:not(.featured):hover {
    transform: translateX(4px);
}

.article-card:not(.featured) .article-info {
    flex: 1;
    min-width: 0;
    padding-right: 0;
    display: flex;
    flex-direction: column;
}

.article-category-sm {
    font-size: 11px;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 6px;
    display: inline-block;
    background: rgba(74, 144, 164, 0.1);
    padding: 3px 8px;
    border-radius: 10px;
    align-self: flex-start;
}

.article-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.2px;
}

.article-summary-sm {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.article-meta-sm {
    display: flex;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: auto;
    padding-top: 8px;
}

.article-meta-sm span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.article-cover-sm {
    width: 120px;
    height: 90px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.article-cover-sm img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:not(.featured):hover .article-cover-sm img {
    transform: scale(1.1);
}

/* 文章详情页 */
.article-detail-header {
    padding: var(--spacing-md);
    padding-top: 70px;
}

.article-category-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--color-primary);
    background: rgba(74, 144, 164, 0.1);
    padding: 4px 12px;
    border-radius: 12px;
    margin-bottom: var(--spacing-sm);
}

.article-detail-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
}

.article-detail-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.author-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.author-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.publish-time {
    font-size: 12px;
    color: var(--color-text-light);
}

.article-stats-row {
    display: flex;
    gap: var(--spacing-md);
}

.article-stats-row .stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-text-light);
}

.article-stats-row .stat-item svg {
    width: 14px;
    height: 14px;
}

.article-cover-full {
    margin: 0 var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-cover-full img {
    width: 100%;
    display: block;
}

.article-content-wrapper {
    padding: var(--spacing-md);
}

.article-body {
    font-size: 15px;
    color: var(--color-text);
    line-height: 1.9;
    margin-bottom: var(--spacing-lg);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.tag-label {
    font-size: 13px;
    color: var(--color-text-light);
}

.article-tag {
    font-size: 13px;
    color: var(--color-primary);
    cursor: pointer;
}

.author-card {
    margin: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.author-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar-lg {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.author-name-lg {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 2px;
}

.author-intro {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.related-item {
    display: flex;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
}

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

.related-info {
    flex: 1;
}

.related-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--color-text-light);
}

.related-cover {
    width: 80px;
    height: 60px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
}

.related-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-action-bar {
    position: fixed;
    bottom: calc(56px + env(safe-area-inset-bottom, 0));
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    background: var(--color-bg);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.article-action-bar .action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: none;
    border: none;
    padding: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: 11px;
    cursor: pointer;
}

.article-action-bar .action-item svg {
    width: 22px;
    height: 22px;
}

.article-action-bar .action-item.active {
    color: var(--color-accent);
}

.article-action-bar .action-item.share {
    color: var(--color-primary);
}

.share-btn.dark {
    background: rgba(0,0,0,0.1);
    color: var(--color-text);
}

.follow-btn-sm {
    padding: 6px 16px;
    background: var(--color-primary);
    color: white;
    border-radius: 16px;
    font-size: 13px;
}

/* ========================================
   知情同意书模态框样式
   ======================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.protocol-modal {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.protocol-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.protocol-modal-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--color-text);
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.close-btn:hover {
    color: var(--color-text);
}

.protocol-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.protocol-content {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text);
}

.protocol-header-info {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 13px;
    margin-bottom: var(--spacing-md);
}

.protocol-content h4 {
    font-size: 16px;
    color: var(--color-text);
    margin: var(--spacing-md) 0 var(--spacing-sm);
    text-align: center;
}

.protocol-content h5 {
    font-size: 15px;
    color: var(--color-primary);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    font-weight: 600;
}

.protocol-content p {
    margin: var(--spacing-sm) 0;
    text-align: justify;
}

.protocol-modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.protocol-modal-footer .btn-primary {
    padding: 10px 40px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    cursor: pointer;
    transition: background var(--transition);
}

.protocol-modal-footer .btn-primary:hover {
    background: var(--color-primary-dark);
}

/* 签名区域样式 */
.signature-section {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.signature-label {
    font-size: 14px;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.signature-canvas-wrapper {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    background: #fafafa;
    overflow: hidden;
}

.signature-canvas {
    display: block;
    width: 100%;
    height: 200px;
    cursor: crosshair;
    touch-action: none;
}

.clear-signature-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.clear-signature-btn:hover {
    background: white;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.signature-preview {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.signature-preview-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.signature-preview-img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: white;
}

.resign-btn {
    margin-top: var(--spacing-md);
    padding: 8px 20px;
    background: white;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
}

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

.protocol-modal-footer .btn-primary:disabled {
    background: var(--color-text-light);
    cursor: not-allowed;
    opacity: 0.6;
}

/* 为底部操作栏留出空间 */
.related-section {
    margin: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: 140px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
}

/* ========================================
   视频列表页
   ======================================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.video-card {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
}

.video-card:active {
    transform: scale(0.98);
}

.video-cover {
    position: relative;
    aspect-ratio: 16/9;
}

.video-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-duration {
    position: absolute;
    bottom: var(--spacing-xs);
    right: var(--spacing-xs);
    background: rgba(0,0,0,0.7);
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
}

.video-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.9;
}

.video-play-icon svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
    margin-left: 2px;
}

.video-badge {
    position: absolute;
    top: var(--spacing-xs);
    left: var(--spacing-xs);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    color: white;
}

.video-badge.free {
    background: var(--color-success);
}

.video-badge.hot {
    background: var(--color-accent);
}

.video-series-badge {
    position: absolute;
    bottom: var(--spacing-xs);
    left: var(--spacing-xs);
    background: rgba(0,0,0,0.7);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
}

.video-info {
    padding: var(--spacing-sm);
}

.video-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.3;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.video-author {
    display: flex;
    align-items: center;
    gap: 4px;
}

.author-avatar-xs {
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.video-author span {
    font-size: 11px;
    color: var(--color-text-secondary);
}

.video-stats {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--color-text-light);
}

.video-stats svg {
    width: 12px;
    height: 12px;
}

/* 视频播放页 */
.video-page {
    background: var(--color-bg);
}

.video-player-wrapper {
    position: relative;
    background: #000;
}

.player-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    z-index: 10;
}

.video-player {
    width: 100%;
    max-height: 56.25vw;
    background: #000;
}

.player-placeholder {
    width: 100%;
    height: 100%;
    position: relative;
    cursor: pointer;
}

.player-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-button-lg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-button-lg svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
    margin-left: 4px;
}

.video-detail-info {
    padding: var(--spacing-md);
    background: var(--color-bg);
}

.video-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.video-badges-row .badge.series {
    background: rgba(155, 138, 196, 0.15);
    color: var(--color-secondary);
}

.video-detail-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.video-detail-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.video-detail-stats .stat {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.video-detail-stats .stat svg {
    width: 14px;
    height: 14px;
}

.video-author-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.video-description {
    padding-top: var(--spacing-md);
}

.video-description p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    max-height: 60px;
    overflow: hidden;
}

.video-description p.expanded {
    max-height: none;
}

.expand-btn {
    color: var(--color-primary);
    font-size: 13px;
    cursor: pointer;
}

.series-section {
    background: var(--color-bg);
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.series-section .section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.series-count {
    font-size: 13px;
    font-weight: normal;
    color: var(--color-text-secondary);
}

.series-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.series-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.series-item.active {
    background: rgba(74, 144, 164, 0.1);
}

.series-episode {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.series-item.active .series-episode {
    background: var(--color-primary);
    color: white;
}

.series-info {
    flex: 1;
}

.series-item-title {
    font-size: 14px;
    color: var(--color-text);
    display: block;
    margin-bottom: 2px;
}

.series-item-duration {
    font-size: 12px;
    color: var(--color-text-light);
}

.series-playing {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-primary);
}

.series-playing svg {
    width: 12px;
    height: 12px;
}

.related-video-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.related-video-item {
    display: flex;
    gap: var(--spacing-md);
    cursor: pointer;
}

.related-video-cover {
    width: 140px;
    aspect-ratio: 16/9;
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

.related-video-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-duration {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: rgba(0,0,0,0.7);
    color: white;
    font-size: 10px;
    padding: 2px 4px;
    border-radius: 2px;
}

.related-video-info {
    flex: 1;
    min-width: 0;
}

.related-video-title {
    font-size: 14px;
    color: var(--color-text);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-video-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--color-text-light);
}

.video-action-bar {
    position: fixed;
    bottom: calc(56px + env(safe-area-inset-bottom, 0));
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    background: var(--color-bg);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.video-action-bar .action-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: none;
    border: none;
    padding: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: 11px;
    cursor: pointer;
}

.video-action-bar .action-item svg {
    width: 22px;
    height: 22px;
}

.video-action-bar .action-item.active {
    color: var(--color-accent);
}

/* 为底部栏留出空间 */
.related-section:last-of-type {
    padding-bottom: 140px;
}

/* ========================================
   底部导航栏
   ======================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid var(--color-border);
    padding-bottom: env(safe-area-inset-bottom, 0);
    z-index: 100;
    max-width: 750px;
    margin: 0 auto;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    height: 100%;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.2s;
}

.nav-item svg {
    width: 24px;
    height: 24px;
    margin-bottom: 2px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}

.nav-item.active {
    color: var(--color-primary);
}

.nav-item.active svg {
    stroke: var(--color-primary);
}