/* 糖心vlog - 全站样式表 */
/* ================================ */
/* 基础重置 */
/* ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333333;
    background-color: #f8f9fa;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
    -webkit-transition: color 0.3s ease;
    -moz-transition: color 0.3s ease;
    -o-transition: color 0.3s ease;
    transition: color 0.3s ease;
}

a:hover {
    color: #667eea;
}

ul, ol {
    list-style: none;
}

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

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

input {
    font-family: inherit;
    outline: none;
}

/* ================================ */
/* 容器 */
/* ================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
}

/* ================================ */
/* 头部导航 */
/* ================================ */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    -webkit-box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    -moz-box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -moz-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
}

.nav-menu {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 30px;
}

.nav-menu li {
    list-style: none;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    display: inline-block;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #ffffff;
}

.nav-menu a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #ffffff;
    -webkit-transition: width 0.3s ease;
    -moz-transition: width 0.3s ease;
    -o-transition: width 0.3s ease;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.header-actions {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 15px;
}

.btn-login,
.btn-register {
    padding: 8px 20px;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    border-radius: 20px;
    font-weight: 500;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-login {
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.5);
    background-color: transparent;
}

.btn-login:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.btn-register {
    background-color: #ffffff;
    color: #667eea;
    border: 1px solid #ffffff;
}

.btn-register:hover {
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
    -webkit-box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: #667eea;
}

/* ================================ */
/* 搜索栏 */
/* ================================ */
.search-bar {
    background-color: #ffffff;
    padding-top: 20px;
    padding-bottom: 20px;
    -webkit-box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    -moz-box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.search-container {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-input {
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    -moz-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #e0e0e0;
    border-right: none;
    -webkit-border-radius: 25px 0 0 25px;
    -moz-border-radius: 25px 0 0 25px;
    border-radius: 25px 0 0 25px;
    font-size: 1rem;
    -webkit-transition: border-color 0.3s ease;
    -moz-transition: border-color 0.3s ease;
    -o-transition: border-color 0.3s ease;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    border-color: #667eea;
}

.search-btn {
    padding: 12px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border: none;
    -webkit-border-radius: 0 25px 25px 0;
    -moz-border-radius: 0 25px 25px 0;
    border-radius: 0 25px 25px 0;
    font-size: 1rem;
    font-weight: 500;
    -webkit-transition: -webkit-transform 0.3s ease;
    -moz-transition: -moz-transform 0.3s ease;
    -o-transition: -o-transform 0.3s ease;
    transition: transform 0.3s ease;
}

.search-btn:hover {
    -webkit-transform: scale(1.02);
    -moz-transform: scale(1.02);
    -ms-transform: scale(1.02);
    -o-transform: scale(1.02);
    transform: scale(1.02);
}

/* ================================ */
/* 英雄区域 */
/* ================================ */
.hero {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
    background-size: cover;
    background-position: center center;
    padding-top: 120px;
    padding-bottom: 80px;
    text-align: center;
    color: #ffffff;
    margin-top: 70px;
}

.hero-content {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.3;
    font-weight: 700;
}

.hero h1 span {
    color: #ffd700;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
    margin-bottom: 30px;
}

.hero-btns {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 20px;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -moz-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.btn-primary {
    padding: 15px 35px;
    background-color: #ffffff;
    color: #667eea;
    -webkit-border-radius: 30px;
    -moz-border-radius: 30px;
    border-radius: 30px;
    font-weight: 600;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
}

.btn-primary:hover {
    -webkit-transform: translateY(-3px);
    -moz-transform: translateY(-3px);
    -ms-transform: translateY(-3px);
    -o-transform: translateY(-3px);
    transform: translateY(-3px);
    -webkit-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    color: #667eea;
}

.btn-outline {
    padding: 15px 35px;
    border: 2px solid #ffffff;
    color: #ffffff;
    -webkit-border-radius: 30px;
    -moz-border-radius: 30px;
    border-radius: 30px;
    font-weight: 600;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
    display: inline-block;
    background-color: transparent;
}

.btn-outline:hover {
    background-color: #ffffff;
    color: #667eea;
}

/* ================================ */
/* 统计栏 */
/* ================================ */
.stats-bar {
    background-color: #ffffff;
    padding-top: 40px;
    padding-bottom: 40px;
    -webkit-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    -moz-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.stats-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 30px;
    text-align: center;
}

.stats-grid .stat-item {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 200px;
    -moz-box-flex: 1;
    -ms-flex: 1 1 200px;
    flex: 1 1 200px;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 5px;
    font-weight: 700;
}

.stat-item p {
    color: #666666;
    font-size: 1rem;
}

/* ================================ */
/* 通用区块 */
/* ================================ */
.section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2rem;
    color: #333333;
    margin-bottom: 15px;
    font-weight: 700;
}

.section-header p {
    color: #666666;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1rem;
}

/* ================================ */
/* 视频卡片网格 */
/* ================================ */
.video-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 25px;
}

.video-grid .video-card {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 calc(25% - 19px);
    -moz-box-flex: 1;
    -ms-flex: 1 1 calc(25% - 19px);
    flex: 1 1 calc(25% - 19px);
    min-width: 250px;
    max-width: calc(25% - 19px);
}

.video-card {
    background-color: #ffffff;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    border-radius: 12px;
    overflow: hidden;
    -webkit-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    -moz-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.video-card:hover {
    -webkit-transform: translateY(-5px);
    -moz-transform: translateY(-5px);
    -ms-transform: translateY(-5px);
    -o-transform: translateY(-5px);
    transform: translateY(-5px);
    -webkit-box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    -moz-box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.video-thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
    background-color: #f0f0f0;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
    -webkit-transition: -webkit-transform 0.3s ease;
    -moz-transition: -moz-transform 0.3s ease;
    -o-transition: -o-transform 0.3s ease;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumb img {
    -webkit-transform: scale(1.05);
    -moz-transform: scale(1.05);
    -ms-transform: scale(1.05);
    -o-transform: scale(1.05);
    transform: scale(1.05);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(102, 126, 234, 0.9);
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    opacity: 0;
    -webkit-transition: opacity 0.3s ease;
    -moz-transition: opacity 0.3s ease;
    -o-transition: opacity 0.3s ease;
    transition: opacity 0.3s ease;
}

.play-btn::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 55%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    border-left: 20px solid #ffffff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
}

.video-card:hover .play-btn {
    opacity: 1;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    padding: 3px 8px;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: #333333;
    font-weight: 600;
}

.video-meta {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 15px;
    color: #999999;
    font-size: 0.85rem;
}

/* ================================ */
/* 服务卡片 */
/* ================================ */
.services-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 30px;
}

.services-grid .service-card {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 calc(33.333% - 20px);
    -moz-box-flex: 1;
    -ms-flex: 1 1 calc(33.333% - 20px);
    flex: 1 1 calc(33.333% - 20px);
    min-width: 280px;
}

.service-card {
    background-color: #ffffff;
    padding: 40px 30px;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    border-radius: 12px;
    text-align: center;
    -webkit-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    -moz-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.service-card:hover {
    -webkit-transform: translateY(-5px);
    -moz-transform: translateY(-5px);
    -ms-transform: translateY(-5px);
    -o-transform: translateY(-5px);
    transform: translateY(-5px);
    -webkit-box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    -moz-box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333333;
    font-weight: 600;
}

.service-card p {
    color: #666666;
    line-height: 1.7;
    font-size: 1rem;
}

/* ================================ */
/* 创作者展示 */
/* ================================ */
.creators-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 20px;
}

.creators-grid .creator-card {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 calc(16.666% - 17px);
    -moz-box-flex: 1;
    -ms-flex: 1 1 calc(16.666% - 17px);
    flex: 1 1 calc(16.666% - 17px);
    min-width: 140px;
}

.creator-card {
    text-align: center;
    padding: 20px;
    background-color: #ffffff;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    border-radius: 12px;
    -webkit-box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    -moz-box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.creator-card:hover {
    -webkit-transform: translateY(-3px);
    -moz-transform: translateY(-3px);
    -ms-transform: translateY(-3px);
    -o-transform: translateY(-3px);
    transform: translateY(-3px);
}

.creator-avatar {
    width: 80px;
    height: 80px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 15px auto;
    border: 3px solid #667eea;
}

.creator-avatar img {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
}

.creator-card h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: #333333;
    font-weight: 600;
}

.creator-card p {
    font-size: 0.85rem;
    color: #999999;
}

/* ================================ */
/* 专家展示 */
/* ================================ */
.experts-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 30px;
}

.experts-grid .expert-card {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 calc(50% - 15px);
    -moz-box-flex: 1;
    -ms-flex: 1 1 calc(50% - 15px);
    flex: 1 1 calc(50% - 15px);
    min-width: 300px;
}

.expert-card {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 30px;
    background-color: #ffffff;
    padding: 30px;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    border-radius: 12px;
    -webkit-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    -moz-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.expert-photo {
    width: 150px;
    height: 150px;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    border-radius: 12px;
    overflow: hidden;
    -webkit-flex-shrink: 0;
    -moz-flex-shrink: 0;
    -ms-flex-negative: 0;
    flex-shrink: 0;
}

.expert-photo img {
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
}

.expert-info {
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    -moz-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
}

.expert-info h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: #333333;
    font-weight: 600;
}

.expert-title {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 15px;
    font-size: 1rem;
}

.expert-info p {
    color: #666666;
    line-height: 1.7;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.expert-actions {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 8px 20px;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-small.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border: none;
}

.btn-small.primary:hover {
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
    color: #ffffff;
}

.btn-small.outline {
    border: 1px solid #667eea;
    color: #667eea;
    background-color: transparent;
}

.btn-small.outline:hover {
    background-color: #667eea;
    color: #ffffff;
}

/* ================================ */
/* FAQ */
/* ================================ */
.faq-list {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    background-color: #ffffff;
    margin-bottom: 15px;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    overflow: hidden;
    -webkit-box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    -moz-box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    padding-right: 50px;
    color: #333333;
    font-size: 1rem;
}

.faq-question::after {
    content: "+";
    position: absolute;
    right: 25px;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -o-transform: translateY(-50%);
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: #667eea;
}

.faq-answer {
    padding: 0 25px 20px 25px;
    color: #666666;
    line-height: 1.7;
    font-size: 1rem;
}

/* ================================ */
/* 用户评价 */
/* ================================ */
.testimonials-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 30px;
}

.testimonials-grid .testimonial-card {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 calc(33.333% - 20px);
    -moz-box-flex: 1;
    -ms-flex: 1 1 calc(33.333% - 20px);
    flex: 1 1 calc(33.333% - 20px);
    min-width: 280px;
}

.testimonial-card {
    background-color: #ffffff;
    padding: 30px;
    -webkit-border-radius: 12px;
    -moz-border-radius: 12px;
    border-radius: 12px;
    -webkit-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    -moz-box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.testimonial-rating {
    color: #ffd700;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.testimonial-card > p {
    color: #666666;
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 1rem;
}

.testimonial-author {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    -o-object-fit: cover;
    object-fit: cover;
}

.testimonial-author h4 {
    font-size: 1rem;
    margin-bottom: 3px;
    color: #333333;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 0.85rem;
    color: #999999;
}

/* ================================ */
/* 联系区域 */
/* ================================ */
.contact-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 50px;
    -webkit-box-align: start;
    -webkit-align-items: flex-start;
    -moz-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
}

.contact-grid .contact-info,
.contact-grid .contact-qr {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 calc(50% - 25px);
    -moz-box-flex: 1;
    -ms-flex: 1 1 calc(50% - 25px);
    flex: 1 1 calc(50% - 25px);
    min-width: 280px;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: #333333;
    font-weight: 600;
}

.contact-item {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -moz-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    font-size: 1.3rem;
    -webkit-flex-shrink: 0;
    -moz-flex-shrink: 0;
    -ms-flex-negative: 0;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: #333333;
    font-weight: 600;
}

.contact-item p {
    color: #666666;
    font-size: 1rem;
}

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

.contact-qr h3 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: #333333;
    font-weight: 600;
}

.qr-codes {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 30px;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -moz-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}

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

.qr-item img {
    width: 150px;
    height: 150px;
    border: 1px solid #eeeeee;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    border-radius: 10px;
    margin-bottom: 10px;
}

.qr-item p {
    color: #666666;
    font-size: 0.9rem;
}

/* ================================ */
/* 页脚 */
/* ================================ */
.footer {
    background-color: #1a1a2e;
    color: #ffffff;
    padding-top: 60px;
    padding-bottom: 30px;
}

.footer-grid {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    -webkit-box-flex: 2;
    -webkit-flex: 2 1 300px;
    -moz-box-flex: 2;
    -ms-flex: 2 1 300px;
    flex: 2 1 300px;
}

.footer-links {
    -webkit-box-flex: 1;
    -webkit-flex: 1 1 150px;
    -moz-box-flex: 1;
    -ms-flex: 1 1 150px;
    flex: 1 1 150px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 15px;
    line-height: 1.7;
    font-size: 0.95rem;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 600;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    -webkit-transition: color 0.3s ease;
    -moz-transition: color 0.3s ease;
    -o-transition: color 0.3s ease;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -moz-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.social-links {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -moz-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #667eea;
}

/* ================================ */
/* 面包屑 */
/* ================================ */
.breadcrumb {
    background-color: #ffffff;
    padding-top: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eeeeee;
}

.breadcrumb-list {
    color: #666666;
    font-size: 0.9rem;
}

.breadcrumb-list a {
    color: #667eea;
}

.breadcrumb-list a:hover {
    text-decoration: underline;
}

/* ================================ */
/* 页面标题 */
/* ================================ */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding-top: 60px;
    padding-bottom: 60px;
    text-align: center;
    color: #ffffff;
}

.page-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.page-header p {
    opacity: 0.9;
    font-size: 1.1rem;
}

/* ================================ */
/* 响应式设计 */
/* ================================ */
@media screen and (max-width: 1024px) {
    .video-grid .video-card {
        -webkit-flex: 1 1 calc(33.333% - 17px);
        -moz-box-flex: 1;
        -ms-flex: 1 1 calc(33.333% - 17px);
        flex: 1 1 calc(33.333% - 17px);
        max-width: calc(33.333% - 17px);
    }
    
    .creators-grid .creator-card {
        -webkit-flex: 1 1 calc(25% - 15px);
        -moz-box-flex: 1;
        -ms-flex: 1 1 calc(25% - 15px);
        flex: 1 1 calc(25% - 15px);
    }
}

@media screen and (max-width: 768px) {
    .header-inner {
        -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .video-grid .video-card {
        -webkit-flex: 1 1 calc(50% - 13px);
        -moz-box-flex: 1;
        -ms-flex: 1 1 calc(50% - 13px);
        flex: 1 1 calc(50% - 13px);
        max-width: calc(50% - 13px);
    }
    
    .services-grid .service-card {
        -webkit-flex: 1 1 100%;
        -moz-box-flex: 1;
        -ms-flex: 1 1 100%;
        flex: 1 1 100%;
    }
    
    .experts-grid .expert-card {
        -webkit-flex: 1 1 100%;
        -moz-box-flex: 1;
        -ms-flex: 1 1 100%;
        flex: 1 1 100%;
    }
    
    .expert-card {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        -moz-box-orient: vertical;
        -moz-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        text-align: center;
    }
    
    .expert-photo {
        margin-left: auto;
        margin-right: auto;
    }
    
    .expert-actions {
        -webkit-box-pack: center;
        -webkit-justify-content: center;
        -moz-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
    }
    
    .testimonials-grid .testimonial-card {
        -webkit-flex: 1 1 100%;
        -moz-box-flex: 1;
        -ms-flex: 1 1 100%;
        flex: 1 1 100%;
    }
    
    .contact-grid .contact-info,
    .contact-grid .contact-qr {
        -webkit-flex: 1 1 100%;
        -moz-box-flex: 1;
        -ms-flex: 1 1 100%;
        flex: 1 1 100%;
    }
    
    .footer-grid {
        text-align: center;
    }
    
    .footer-brand,
    .footer-links {
        -webkit-flex: 1 1 100%;
        -moz-box-flex: 1;
        -ms-flex: 1 1 100%;
        flex: 1 1 100%;
    }
    
    .footer-bottom {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        -moz-box-orient: vertical;
        -moz-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        text-align: center;
    }
    
    .creators-grid .creator-card {
        -webkit-flex: 1 1 calc(33.333% - 14px);
        -moz-box-flex: 1;
        -ms-flex: 1 1 calc(33.333% - 14px);
        flex: 1 1 calc(33.333% - 14px);
    }
}

@media screen and (max-width: 480px) {
    .video-grid .video-card {
        -webkit-flex: 1 1 100%;
        -moz-box-flex: 1;
        -ms-flex: 1 1 100%;
        flex: 1 1 100%;
        max-width: 100%;
    }
    
    .hero-btns {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        -moz-box-orient: vertical;
        -moz-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
    }
    
    .creators-grid .creator-card {
        -webkit-flex: 1 1 calc(50% - 10px);
        -moz-box-flex: 1;
        -ms-flex: 1 1 calc(50% - 10px);
        flex: 1 1 calc(50% - 10px);
    }
    
    .qr-codes {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        -moz-box-orient: vertical;
        -moz-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        -webkit-box-align: center;
        -webkit-align-items: center;
        -moz-box-align: center;
        -ms-flex-align: center;
        align-items: center;
    }
    
    .search-container {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -webkit-flex-direction: column;
        -moz-box-orient: vertical;
        -moz-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
    }
    
    .search-input {
        border-right: 2px solid #e0e0e0;
        -webkit-border-radius: 25px;
        -moz-border-radius: 25px;
        border-radius: 25px;
        margin-bottom: 10px;
    }
    
    .search-btn {
        -webkit-border-radius: 25px;
        -moz-border-radius: 25px;
        border-radius: 25px;
    }
}