/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00c6ff;
    --primary-dark: #0072ff;
    --secondary-color: #1a1f36;
    --secondary-dark: #0f1225;
    --accent-color: #7f00ff;
    --success-color: #00d68f;
    --warning-color: #ffb800;
    --danger-color: #ff3860;
    --light-color: #f0f4f8;
    --dark-color: #121212;
    --text-color: #e0e0e0;
    --text-secondary: #a0a0a0;
    --box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    --box-shadow-hover: 0 12px 24px rgba(0,0,0,0.25);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --border-radius: 12px;
    --grid-gap: 1.5rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--secondary-dark);
    background-image: 
        linear-gradient(135deg, rgba(26, 31, 54, 0.97) 0%, rgba(15, 18, 37, 0.97) 100%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%232a3a5a' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 10%, rgba(0, 198, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 90%, rgba(127, 0, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* 导航栏样式 */
header {
    background: linear-gradient(90deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
    border-bottom: 1px solid rgba(0, 198, 255, 0.2);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(0, 198, 255, 0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
}

.logo i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 5px rgba(0, 198, 255, 0.5));
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    border-radius: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid transparent;
}

.nav-links a:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: var(--transition);
    opacity: 0.7;
}

.nav-links a:hover:before,
.nav-links a.active:before {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    background-color: rgba(0, 198, 255, 0.1);
    transform: translateY(-2px);
    border: 1px solid rgba(0, 198, 255, 0.2);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.nav-links a i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 3px rgba(0, 198, 255, 0.3));
}

.user-info {
    background-color: rgba(0, 198, 255, 0.1);
    padding: 0.5rem 1.25rem;
    border-radius: 30px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid rgba(0, 198, 255, 0.2);
}

.user-info:hover {
    background-color: rgba(0, 198, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}

.user-info i {
    color: var(--warning-color);
    filter: drop-shadow(0 0 3px rgba(255, 184, 0, 0.3));
}

/* 用户信息区域样式增强 */
.user-info #points {
    transition: var(--transition);
}

.user-info #points.not-logged {
    color: var(--warning-color);
    opacity: 0.85;
}

.user-info #points.error-text {
    color: var(--danger-color);
    opacity: 0.85;
}

/* 主内容区域 */
main {
    margin-top: 5rem;
    padding: 2rem 1.5rem;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    flex: 1;
}

.target-container {
    padding: 2rem 0;
    width: 100%;
    max-width: 100%;
}

.target-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 页面切换 */
.page {
    display: none;
    animation: fadeIn 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* 广告页面样式 */
.ad-container {
    background-color: var(--secondary-color);
    padding: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 198, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.ad-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(0, 198, 255, 0.05) 0%, transparent 50%),
        linear-gradient(225deg, rgba(127, 0, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.ad-container:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.ad-container h1 {
    color: white;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    padding-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 2.2rem;
    text-shadow: 0 0 10px rgba(0, 198, 255, 0.3);
}

.ad-container h1 i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 5px rgba(0, 198, 255, 0.5));
}

.ad-container h1:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 3px;
}

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

.ad-item {
    padding: 2.5rem 2rem;
    background-color: rgba(26, 31, 54, 0.5);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    border: 1px solid rgba(0, 198, 255, 0.1);
    backdrop-filter: blur(5px);
}

.ad-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    border-color: rgba(0, 198, 255, 0.3);
}

.ad-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    transition: var(--transition);
}

.ad-item:hover::before {
    height: 100%;
}

.ad-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at bottom right, rgba(0, 198, 255, 0.1), transparent 70%);
    pointer-events: none;
}

.ad-item i {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: var(--transition);
    filter: drop-shadow(0 0 5px rgba(0, 198, 255, 0.3));
}

.ad-item:hover i {
    transform: scale(1.1) rotate(5deg);
    color: var(--primary-color);
}

.ad-item h2 {
    color: white;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    font-size: 1.5rem;
}

.ad-item p {
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 靶场列表样式 */
.target-container {
    padding: 2rem;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
}

.target-section {
    width: 100%;
    display: block;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--grid-gap);
    width: 100%;
}

.target-container h2 {
    color: white;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 1.8rem;
    text-shadow: 0 0 10px rgba(0, 198, 255, 0.3);
    text-align: center;
}

.target-container h2 i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 5px rgba(0, 198, 255, 0.5));
}

.target-container h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.target-card {
    background: rgba(26, 31, 54, 0.7);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
    overflow: hidden;
    border: 1px solid rgba(0, 198, 255, 0.1);
    backdrop-filter: blur(5px);
}

.target-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.target-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
    border-color: rgba(0, 198, 255, 0.3);
}

.card-content {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: relative;
    z-index: 1;
}

.card-content::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle at top right, rgba(0, 198, 255, 0.1), transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.card-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: white;
    font-weight: 600;
    text-shadow: 0 0 5px rgba(0, 198, 255, 0.2);
}

.card-badge {
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 30px;
    font-size: 0.8rem;
    margin-left: 0.75rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* 难度标签不同等级颜色 */
.difficulty-novice {
    background: linear-gradient(135deg, #00d68f, #00a870);
    border: 1px solid rgba(0, 214, 143, 0.3);
}

.difficulty-standard {
    background: linear-gradient(135deg, #4caf50, #2e7d32);
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.difficulty-advanced {
    background: linear-gradient(135deg, #ffb800, #ff9800);
    border: 1px solid rgba(255, 184, 0, 0.3);
}

.difficulty-elite {
    background: linear-gradient(135deg, #ff9800, #ff5722);
    border: 1px solid rgba(255, 152, 0, 0.3);
}

.difficulty-hell {
    background: linear-gradient(135deg, #ff5722, #d32f2f);
    border: 1px solid rgba(255, 87, 34, 0.3);
}

/* 难度星级样式 */
.difficulty-stars {
    display: flex;
    align-items: center;
    margin: 0.75rem 0;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.difficulty-label {
    margin-right: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.stars {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-right: 0.75rem;
}

.stars i {
    color: var(--warning-color);
    text-shadow: 0 0 5px rgba(255, 184, 0, 0.5);
}

.stars .fa-star-half-alt {
    background: linear-gradient(90deg, var(--warning-color) 50%, transparent 50%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--warning-color);
    text-shadow: none;
}

.stars .far.fa-star {
    color: rgba(255, 255, 255, 0.2);
    text-shadow: none;
}

.difficulty-value {
    background: linear-gradient(135deg, var(--primary-dark), var(--accent-color));
    color: white;
    padding: 0.1rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-left: auto;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.info-item i {
    color: var(--primary-color);
    margin-top: 0.25rem;
    filter: drop-shadow(0 0 3px rgba(0, 198, 255, 0.3));
}

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

.card-actions {
    margin-top: auto;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.5rem;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
    width: 100%;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
    border: none;
    cursor: pointer;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

.btn-primary:hover {
    background: linear-gradient(90deg, var(--primary-dark), var(--accent-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover::before {
    left: 100%;
}

/* 加载动画 */
.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1.5rem;
    box-shadow: 0 0 15px rgba(0, 198, 255, 0.3);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 无数据和错误状态 */
.no-data, .error-data {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    background: rgba(26, 31, 54, 0.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 198, 255, 0.1);
    box-shadow: var(--box-shadow);
}

.no-data i, .error-data i {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    opacity: 0.7;
    filter: drop-shadow(0 0 5px rgba(0, 198, 255, 0.3));
}

/* 工具页面样式 */
.tools-container {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.notice-box {
    background: rgba(26, 31, 54, 0.7);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--warning-color);
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 184, 0, 0.2);
}

.notice-box::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at top right, rgba(255, 184, 0, 0.1), transparent 70%);
    pointer-events: none;
}

.notice-box h3 {
    color: var(--warning-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
}

.notice-box h3::before {
    content: '⚠️';
    font-size: 1.2rem;
}

.notice-box ol {
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.notice-box li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--grid-gap);
}

.step {
    background: rgba(26, 31, 54, 0.7);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 198, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
    border-color: rgba(0, 198, 255, 0.3);
}

.step:hover::before {
    height: 100%;
}

.step h3 {
    color: white;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.3rem;
    text-shadow: 0 0 5px rgba(0, 198, 255, 0.2);
}

.step h3 i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 3px rgba(0, 198, 255, 0.3));
}

.step p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.step-image {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 198, 255, 0.1);
    transition: var(--transition);
}

.step:hover .step-image {
    transform: scale(1.02);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 198, 255, 0.3);
}

/* VPN故障处理样式 */
.vpn-troubleshooting {
  background: rgba(26, 31, 54, 0.7);
  padding: 2rem;
  border-radius: var(--border-radius);
  margin: 2rem 0;
  border-left: 4px solid var(--warning-color);
}

.server-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--grid-gap);
  margin-top: 1.5rem;
}

.server-card {
  background: rgba(0, 198, 255, 0.05);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(0, 198, 255, 0.2);
  transition: var(--transition);
  position: relative;
}

.server-card:hover {
  transform: translateY(-3px);
  background: rgba(0, 198, 255, 0.1);
}

.server-status {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.server-status.primary {
  background: var(--success-color);
  box-shadow: 0 0 8px rgba(0, 214, 143, 0.3);
}

.server-status.backup {
  background: var(--warning-color);
  box-shadow: 0 0 8px rgba(255, 184, 0, 0.3);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .target-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

/* 移动端菜单完整样式 */
@media (max-width: 992px) {
    .target-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        position: relative;
        padding: 0.75rem 1rem;
    }
    
    .logo {
        flex: 1;
        font-size: 1.3rem;
    }
    
    .menu-toggle {
        display: flex !important;
        order: 2;
    }
    
    .nav-links {
        position: fixed !important;
        top: 60px !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        background-color: var(--secondary-color) !important;
        padding: 20px !important;
        box-shadow: 0 10px 20px rgba(0,0,0,0.3) !important;
        z-index: 1000 !important;
        display: none !important;
        flex-direction: column !important;
        max-height: 80vh !important;
        overflow-y: auto !important;
        border-top: 2px solid var(--primary-color) !important;
    }
    
    .nav-links.show {
        display: flex !important;
    }
    
    .nav-links li {
        width: 100% !important;
        margin: 8px 0 !important;
    }
    
    .nav-links a {
        display: flex !important;
        width: 100% !important;
        padding: 15px !important;
        margin: 0 !important;
        justify-content: flex-start !important;
        font-size: 16px !important;
        color: white !important;
    }
    
    .nav-links a i {
        margin-right: 15px !important;
    }
    
    .user-info {
        order: 3;
        width: 100%;
        margin-top: 10px;
        text-align: center;
        justify-content: center !important;
    }
    
    main {
        margin-top: 7rem;
        padding: 1rem;
    }
    
    /* 遮罩层样式 */
    body.menu-open::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        animation: fadeIn 0.3s ease;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
}

@media (min-width: 993px) {
    #fixed-menu-btn {
        display: none !important;
    }
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 移动端导航增强样式 */
@media (max-width: 992px) {
    /* 保留原有布局样式 */
    .target-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        position: relative;
        padding: 0.75rem 1rem;
    }
    
    .logo {
        flex: 1;
        font-size: 1.3rem;
    }
    
    /* 新的移动端导航样式 */
    .nav-links {
        position: fixed !important;
        top: 60px !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        background-color: var(--secondary-color) !important;
        padding: 20px !important;
        box-shadow: 0 10px 20px rgba(0,0,0,0.3) !important;
        z-index: 1000 !important;
        display: none !important;
        flex-direction: column !important;
        max-height: 80vh !important;
        overflow-y: auto !important;
        border-top: 2px solid var(--primary-color) !important;
    }
    
    .nav-links.show {
        display: flex !important;
    }
    
    .nav-links li {
        width: 100% !important;
        margin: 8px 0 !important;
    }
    
    .nav-links a {
        display: flex !important;
        width: 100% !important;
        padding: 15px !important;
        margin: 0 !important;
        justify-content: flex-start !important;
        font-size: 16px !important;
        color: white !important;
    }
    
    .nav-links a i {
        margin-right: 15px !important;
    }
    
    .user-info {
        order: 3;
        width: 100%;
        margin-top: 10px;
        text-align: center;
        justify-content: center !important;
    }
    
    main {
        margin-top: 7rem;
        padding: 1rem;
    }
    
    /* 遮罩层样式 */
    body.menu-open::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        animation: fadeIn 0.3s ease;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
}

@media (min-width: 993px) {
    #fixed-menu-btn {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .target-grid {
        grid-template-columns: 1fr;
    }
    
    .ad-content {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
    
    .ad-container {
        padding: 1.5rem;
    }
    
    .ad-container h1 {
        font-size: 1.5rem;
        padding: 0.5rem 0;
        margin-bottom: 1rem;
    }
    
    .target-container h2 {
        font-size: 1.25rem;
        padding: 0.5rem 0;
    }
    
    /* 工具页面移动端适配 */
    .tools-container {
        padding: 1rem;
    }
    
    .notice-box {
        padding: 1rem;
    }
    
    .notice-box h3 {
        font-size: 1.1rem;
    }
    
    .step {
        padding: 1rem;
    }
    
    .step h3 {
        font-size: 1.1rem;
    }

    /* 触摸优化 */
    .nav-links a, .btn-primary, .card-actions a, .step {
        touch-action: manipulation;
    }

    /* 修复长文本溢出问题 */
    .card-info p, .notice-box li, .step p {
        word-break: break-word;
    }

    /* 提高表单元素可用性 */
    input, select, button {
        min-height: 44px;
    }
}