:root {
    --primary-dark: #1a1a2e;
    --primary-light: #16213e;
    --accent-gold: #c8a971;
    --accent-red: #9d3b3b;
    --text-light: #f1f1f1;
    --text-gray: #b1b1b1;
    --card-bg: #222235;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(to bottom, var(--primary-dark), var(--primary-light));
    color: var(--text-light);
    min-height: 100vh;
    line-height: 1.6;
}

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

/* 导航栏样式 */
header {
    background-color: rgba(26, 26, 46, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.user-welcome {
    color: var(--accent-gold);
    margin-right: 15px;
    font-weight: 500;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--accent-gold);
}

.logo-icon {
    margin-right: 10px;
    font-size: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-gold);
}

.auth-buttons {
    display: flex;
    align-items: center;
}

.btn {
    padding: 10px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-block;
    cursor: pointer;
}

.btn-login {
    color: var(--text-light);
    margin-right: 15px;
}

.btn-register {
    background-color: var(--accent-gold);
    color: var(--primary-dark);
}

.btn-register:hover {
    background-color: #d6ba88;
    transform: translateY(-2px);
}

/* 页面头部 */
.faq-header {
    padding: 60px 0 30px;
}

.faq-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--accent-gold);
    line-height: 1.3;
}

.faq-intro {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 40px;
    max-width: 800px;
}

/* 搜索框 */
.search-container {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.search-box {
    display: flex;
    align-items: center;
}

.search-input {
    flex: 1;
    padding: 15px 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px 0 0 30px;
    color: var(--text-light);
    font-size: 1rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.search-btn {
    padding: 15px 25px;
    background-color: var(--accent-gold);
    color: var(--primary-dark);
    border: none;
    border-radius: 0 30px 30px 0;
    cursor: pointer;
    font-weight: 500;
}

/* 分类导航 */
.category-nav {
    display: flex;
    overflow-x: auto;
    padding: 10px 0;
    margin-bottom: 30px;
    scrollbar-width: thin;
    -ms-overflow-style: none;
}

.category-nav::-webkit-scrollbar {
    height: 6px;
}

.category-nav::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.category-btn {
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border: none;
    border-radius: 30px;
    margin-right: 10px;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.3s;
}

.category-btn.active {
    background-color: var(--accent-gold);
    color: var(--primary-dark);
}

.category-btn:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.2);
}

/* FAQ内容 */
.faq-content {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.faq-category {
    margin-bottom: 40px;
}

.faq-category:last-child {
    margin-bottom: 0;
}

.category-title {
    font-size: 1.6rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-gold);
    color: var(--accent-gold);
}

.faq-item {
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
}

.faq-question {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s;
}

.faq-question:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-right: 15px;
}

.faq-icon {
    color: var(--accent-gold);
    transition: transform 0.3s;
    flex-shrink: 0;
}

.faq-answer {
    background-color: rgba(255, 255, 255, 0.03);
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer-content {
    padding: 20px 0;
}

.faq-answer p {
    margin-bottom: 15px;
    color: var(--text-gray);
}

.faq-answer ul, .faq-answer ol {
    padding-left: 20px;
    margin-bottom: 15px;
    color: var(--text-gray);
}

.faq-answer li {
    margin-bottom: 8px;
}

.faq-item.active .faq-question {
    background-color: rgba(200, 169, 113, 0.1);
}

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

.faq-item.active .faq-answer {
    max-height: 1000px;
}

/* 联系支持 */
.support-section {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 60px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.support-title {
    font-size: 1.6rem;
    margin-bottom: 20px;
    color: var(--accent-gold);
}

.support-desc {
    color: var(--text-gray);
    margin-bottom: 25px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.support-methods {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 30px;
}

.support-method {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    width: 200px;
    transition: all 0.3s;
}

.support-method:hover {
    background-color: rgba(200, 169, 113, 0.1);
    transform: translateY(-5px);
}

.support-icon {
    font-size: 2rem;
    color: var(--accent-gold);
    margin-bottom: 15px;
}

.support-method h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.support-method p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 15px 0;
    }

    .nav-links {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links li {
        margin: 0 10px 10px;
    }

    .auth-buttons {
        margin-top: 20px;
    }

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

    .search-box {
        flex-direction: column;
    }

    .search-input {
        border-radius: 30px;
        margin-bottom: 10px;
        width: 100%;
    }

    .search-btn {
        border-radius: 30px;
        width: 100%;
    }

    .category-nav {
        padding: 10px 5px;
    }

    .category-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    .faq-content {
        padding: 20px;
    }

    .support-methods {
        flex-direction: column;
        align-items: center;
    }

    .support-method {
        width: 100%;
        max-width: 300px;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .faq-question {
        padding: 25px 20px;
    }
}

/* 导航栏用户头像样式 */
.user-profile-nav {
    display: flex;
    align-items: center;
    margin-right: 15px;
}

.user-profile-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-light);
    transition: all 0.3s ease;
    padding: 5px 10px;
    border-radius: 20px;
}

/* 添加点击反馈 */
.user-profile-link:active {
    transform: scale(0.95);
}

.user-profile-link:hover {
    background-color: rgba(200, 169, 113, 0.1);
    color: var(--accent-gold);
    transform: translateY(-2px);
}

.user-profile-link:hover .user-name-nav {
    color: var(--text-light);
}

.user-profile-link:hover .user-avatar-nav {
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(200, 169, 113, 0.5);
}

.user-avatar-nav {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 8px;
    border: 2px solid var(--accent-gold);
    transition: all 0.3s ease;
}

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

.user-name-nav {
    font-weight: 500;
    color: var(--accent-gold);
    transition: color 0.3s;
}