/* === 面包屑导航样式（简洁直线版） === */
.breadcrumb-nav {
    margin-bottom: 25px;
    padding-top: 15px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
    font-weight: 400;
}
.breadcrumb-item {
    display: flex;
    align-items: center;
}
.breadcrumb-item a {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}
.breadcrumb-item a:hover {
    color: var(--primary-light);
    background: rgba(14, 165, 233, 0.08);
    transform: translateY(-1px);
}
.breadcrumb-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}
.breadcrumb-item a:hover .breadcrumb-icon {
    transform: scale(1.1);
    color: var(--primary);
}
.breadcrumb-separator {
    margin: 0 12px;
    color: var(--text-secondary);
    opacity: 0.6;
    display: flex;
    align-items: center;
    font-size: 0.8rem;
}
.breadcrumb-separator svg {
    width: 12px;
    height: 12px;
}
.breadcrumb-item.current {
    color: var(--primary-light);
    font-weight: 600;
}
.breadcrumb-item.current span {
    color: var(--primary-light);
    position: relative;
}
/* 当前页面下划线效果 */
.breadcrumb-item.current span::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 1px;
    animation: underlineExpand 0.5s ease-out;
}
@keyframes underlineExpand {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 100%;
        opacity: 1;
    }
}
/* 面包屑入场动画 */
@keyframes breadcrumbSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}
.breadcrumb-nav {
    animation: breadcrumbSlideIn 0.4s ease-out;
}
.breadcrumb-item {
    animation: breadcrumbSlideIn 0.5s ease-out;
}
.breadcrumb-item:nth-child(1) { animation-delay: 0.1s; }
.breadcrumb-item:nth-child(2) { animation-delay: 0.2s; }
.breadcrumb-item:nth-child(3) { animation-delay: 0.3s; }
/* === 面包屑响应式设计 === */
@media (max-width: 768px) {
    .breadcrumb-nav {
        margin-bottom: 20px;
        padding-top: 12px;
    }
    
    .breadcrumb {
        font-size: 0.85rem;
        flex-wrap: wrap;
        gap: 4px;
    }
    
    .breadcrumb-item a {
        padding: 3px 6px;
        gap: 4px;
    }
    
    .breadcrumb-icon {
        width: 14px;
        height: 14px;
    }
    
    .breadcrumb-separator {
        margin: 0 8px;
    }
    
    .breadcrumb-separator svg {
        width: 10px;
        height: 10px;
    }
}
@media (max-width: 480px) {
    .breadcrumb-nav {
        margin-bottom: 15px;
        padding-top: 10px;
    }
    
    .breadcrumb {
        font-size: 0.8rem;
    }
    
    .breadcrumb-item a {
        padding: 2px 4px;
        gap: 3px;
        border-radius: 4px;
    }
    
    .breadcrumb-icon {
        width: 12px;
        height: 12px;
    }
    
    .breadcrumb-separator {
        margin: 0 6px;
    }
    
    .breadcrumb-separator svg {
        width: 8px;
        height: 8px;
    }
}
/* === 微交互效果 === */
.breadcrumb-item a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.1), transparent);
    transition: left 0.6s ease;
    border-radius: 6px;
}
.breadcrumb-item a:hover::before {
    left: 100%;
}
/* === 高对比度模式适配 === */
@media (prefers-contrast: high) {
    .breadcrumb-item a {
        border: 1px solid transparent;
    }
    
    .breadcrumb-item a:hover {
        border-color: var(--primary);
        background: transparent;
    }
    
    .breadcrumb-item.current span::after {
        height: 3px;
        background: var(--primary);
    }
}

.help-section {
    padding: 40px 0;
}

.page-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 60px;
}

.troubleshoot-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.trouble-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 30px;
    transition: all 0.3s ease;
}

.trouble-item:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(14, 165, 233, 0.1);
}

.trouble-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.trouble-icon {
    width: 60px;
    height: 60px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trouble-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-light);
}

.trouble-icon.warning {
    background: rgba(251, 191, 36, 0.1);
}

.trouble-icon.warning svg {
    color: #fbbf24;
}

.trouble-icon.error {
    background: rgba(239, 68, 68, 0.1);
}

.trouble-icon.error svg {
    color: #ef4444;
}

.trouble-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 0;
}

.trouble-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.problem-desc, .solution {
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
}

.problem-desc h4, .solution h4 {
    color: var(--primary-light);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.problem-desc p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.solution ol {
    margin: 0;
    padding-left: 20px;
}

.solution li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 10px;
}

.solution li:last-child {
    margin-bottom: 0;
}

/* 联系客服部分 */
.contact-section {
    text-align: center;
    margin-top: 80px;
    padding: 60px 30px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), rgba(99, 102, 241, 0.05));
    border-radius: 24px;
}

.contact-section h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.contact-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.contact-btn {
    padding: 16px 40px;
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .trouble-header {
        flex-direction: column;
        text-align: center;
    }
    
    .trouble-header h3 {
        font-size: 1.3rem;
    }
    
    .trouble-item {
        padding: 20px;
    }
    
    .problem-desc, .solution {
        padding: 15px;
    }
    
    .contact-section {
        padding: 40px 20px;
    }
}