/* 腾龙游戏公司样式表 - 主色调：深紫色科技感 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调定义 */
    --tl-primary-dark: #2a0b42;
    --tl-primary: #5a2d8c;
    --tl-primary-light: #8a5cc5;
    --tl-secondary: #3d8bf2;
    --tl-secondary-light: #6ea8fe;
    --tl-white: #ffffff;
    --tl-light-gray: #f8f9fa;
    --tl-gray: #6c757d;
    --tl-dark: #343a40;
    --tl-gradient: linear-gradient(135deg, var(--tl-primary), var(--tl-secondary));
    --tl-gradient-light: linear-gradient(135deg, var(--tl-primary-light), var(--tl-secondary-light));
    
    /* 阴影 */
    --tl-shadow: 0 4px 12px rgba(42, 11, 66, 0.1);
    --tl-shadow-lg: 0 8px 24px rgba(42, 11, 66, 0.15);
    --tl-shadow-dark: 0 4px 12px rgba(0, 0, 0, 0.25);
    
    /* 圆角 */
    --tl-radius: 8px;
    --tl-radius-lg: 16px;
    --tl-radius-pill: 50px;
    
    /* 过渡 */
    --tl-transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--tl-dark);
    background-color: var(--tl-white);
    overflow-x: hidden;
}

.tl-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用样式 */
.tl-section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--tl-dark);
    margin-bottom: 1rem;
    text-align: center;
}

.tl-section-subtitle {
    font-size: 1.1rem;
    color: var(--tl-gray);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

/* 按钮样式 */
.tl-btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--tl-radius-pill);
    font-weight: 600;
    text-decoration: none;
    transition: var(--tl-transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

.tl-btn-primary {
    background: var(--tl-gradient);
    color: var(--tl-white);
}

.tl-btn-primary:hover {
    background: var(--tl-gradient-light);
    transform: translateY(-2px);
    box-shadow: var(--tl-shadow);
}

.tl-btn-outline {
    background: transparent;
    color: var(--tl-primary);
    border: 2px solid var(--tl-primary);
}

.tl-btn-outline:hover {
    background: var(--tl-primary);
    color: var(--tl-white);
    transform: translateY(-2px);
}

.tl-btn-icon {
    margin-right: 8px;
    display: inline-block;
}

/* 顶部导航栏 */
.tl-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--tl-primary-dark);
    box-shadow: var(--tl-shadow-dark);
    z-index: 1000;
    padding: 12px 0;
}

.tl-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tl-logo-area {
    display: flex;
    align-items: center;
}

.tl-logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--tl-white);
}

.tl-logo-icon {
    margin-right: 12px;
}

.tl-hexagon {
    width: 48px;
    height: 48px;
    background: var(--tl-gradient);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

.tl-hexagon.small {
    width: 32px;
    height: 32px;
}

.tl-cube {
    width: 24px;
    height: 24px;
    background-color: rgba(255, 255, 255, 0.9);
    transform: rotate(15deg);
    box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.2);
}

.tl-hexagon.small .tl-cube {
    width: 16px;
    height: 16px;
}

.tl-logo-text {
    display: flex;
    flex-direction: column;
}

.tl-site-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--tl-white);
    line-height: 1.2;
}

.tl-site-subtitle {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

/* 主导航 */
.tl-main-nav {
    display: flex;
}

.tl-nav-list {
    display: flex;
    list-style: none;
    gap: 24px;
}

.tl-nav-item {
    margin: 0;
}

.tl-nav-link {
    color: var(--tl-white);
    text-decoration: none;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: var(--tl-radius-pill);
    transition: var(--tl-transition);
    position: relative;
}

.tl-nav-link:hover,
.tl-nav-link.active {
    background-color: rgba(255, 255, 255, 0.15);
}

.tl-nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: var(--tl-secondary-light);
    border-radius: 2px;
}

/* 右侧功能入口 */
.tl-header-actions {
    display: flex;
    align-items: center;
}

.tl-insider-btn {
    background: var(--tl-gradient-light);
    color: var(--tl-white);
    padding: 10px 24px;
    border-radius: var(--tl-radius-pill);
    text-decoration: none;
    font-weight: 600;
    transition: var(--tl-transition);
}

.tl-insider-btn:hover {
    background: var(--tl-gradient);
    transform: translateY(-2px);
    box-shadow: var(--tl-shadow);
}

/* 移动端菜单按钮 */
.tl-mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    padding: 0;
}

.tl-mobile-menu-btn span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--tl-white);
    border-radius: 2px;
    transition: var(--tl-transition);
}

/* 移动端导航菜单 */
.tl-mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--tl-primary-dark);
    z-index: 999;
    box-shadow: var(--tl-shadow-dark);
    padding: 20px;
}

.tl-mobile-nav-inner {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.tl-mobile-nav-link {
    color: var(--tl-white);
    text-decoration: none;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: var(--tl-radius);
    transition: var(--tl-transition);
}

.tl-mobile-nav-link:hover,
.tl-mobile-nav-link.active {
    background-color: rgba(255, 255, 255, 0.15);
}

.tl-mobile-nav-link.special {
    background: var(--tl-gradient-light);
}

/* 首屏主视觉区 */
.tl-hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    margin-top: 70px;
    overflow: hidden;
}

.tl-hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--tl-primary-dark);
    z-index: -2;
}

.tl-hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(90, 45, 140, 0.2) 0%, transparent 20%),
        radial-gradient(circle at 80% 70%, rgba(61, 139, 242, 0.2) 0%, transparent 20%);
    z-index: -1;
}

.tl-hero-carousel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.tl-hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.tl-hero-slide.active {
    opacity: 0.7;
}

.tl-hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tl-hero-carousel-controls {
    position: absolute;
    bottom: 40px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    z-index: 1;
}

.tl-carousel-prev,
.tl-carousel-next {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--tl-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--tl-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tl-carousel-prev:hover,
.tl-carousel-next:hover {
    background: rgba(255, 255, 255, 0.3);
}

.tl-carousel-dots {
    display: flex;
    gap: 10px;
}

.tl-carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--tl-transition);
}

.tl-carousel-dot.active {
    background: var(--tl-white);
}

.tl-hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    text-align: center;
}

.tl-hero-text {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.tl-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--tl-white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.tl-hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.tl-hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.tl-hero-btn {
    padding: 16px 32px;
    border-radius: var(--tl-radius-pill);
    font-weight: 700;
    text-decoration: none;
    font-size: 1.1rem;
    transition: var(--tl-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
}

.tl-call-btn {
    background: var(--tl-white);
    color: var(--tl-primary);
}

.tl-call-btn:hover {
    background: var(--tl-light-gray);
    transform: translateY(-3px);
    box-shadow: var(--tl-shadow);
}

.tl-register-btn {
    background: var(--tl-gradient-light);
    color: var(--tl-white);
}

.tl-register-btn:hover {
    background: var(--tl-gradient);
    transform: translateY(-3px);
    box-shadow: var(--tl-shadow);
}

/* 功能说明区 */
.tl-features-section {
    padding: 100px 0;
    background-color: var(--tl-white);
}

.tl-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

.tl-feature-card {
    background: var(--tl-white);
    border-radius: var(--tl-radius-lg);
    overflow: hidden;
    box-shadow: var(--tl-shadow);
    transition: var(--tl-transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tl-feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--tl-shadow-lg);
}

.tl-feature-visual {
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 250px;
}

.tl-feature-illustration {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

/* 3D等距插画样式 */
.tl-iso-city,
.tl-iso-game,
.tl-iso-map {
    position: relative;
    width: 180px;
    height: 180px;
    transform-style: preserve-3d;
    transform: rotateX(60deg) rotateZ(45deg);
}

.tl-iso-building {
    position: absolute;
    background-color: var(--tl-gray);
}

.tl-building-1 {
    width: 60px;
    height: 80px;
    bottom: 0;
    left: 30px;
    background-color: var(--tl-primary);
}

.tl-building-2 {
    width: 50px;
    height: 100px;
    bottom: 0;
    left: 100px;
    background-color: var(--tl-secondary);
}

.tl-building-3 {
    width: 40px;
    height: 60px;
    bottom: 0;
    left: 0;
    background-color: var(--tl-primary-light);
}

.tl-iso-flag {
    position: absolute;
    width: 6px;
    height: 30px;
    background-color: var(--tl-white);
    top: -20px;
    left: 45px;
}

.tl-iso-flag::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 15px;
    background-color: var(--tl-primary-light);
    top: 0;
    left: 6px;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 70%, 0 100%);
}

.tl-iso-console {
    position: absolute;
    width: 120px;
    height: 80px;
    background-color: var(--tl-dark);
    bottom: 0;
    left: 30px;
    border-radius: 10px 10px 0 0;
}

.tl-iso-screen {
    position: absolute;
    width: 100px;
    height: 60px;
    background: var(--tl-gradient);
    top: 10px;
    left: 10px;
    border-radius: 5px;
}

.tl-iso-pin {
    position: absolute;
    width: 20px;
    height: 30px;
    background: var(--tl-primary);
    top: 30px;
    left: 80px;
    clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
}

.tl-iso-pin::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--tl-white);
    top: -5px;
    left: 5px;
    border-radius: 50%;
}

.tl-iso-map-base {
    position: absolute;
    width: 140px;
    height: 100px;
    background-color: var(--tl-light-gray);
    bottom: 0;
    left: 20px;
    border-radius: 5px;
}

.tl-iso-base {
    position: absolute;
    width: 200px;
    height: 10px;
    background-color: rgba(0, 0, 0, 0.1);
    bottom: -5px;
    left: -10px;
    transform: translateZ(-10px);
}

.tl-feature-content {
    padding: 30px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.tl-feature-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--tl-dark);
    margin-bottom: 15px;
}

.tl-feature-description {
    color: var(--tl-gray);
    margin-bottom: 25px;
    flex-grow: 1;
}

.tl-feature-btn {
    display: inline-block;
    background: var(--tl-gradient);
    color: var(--tl-white);
    padding: 12px 24px;
    border-radius: var(--tl-radius-pill);
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: var(--tl-transition);
    align-self: flex-start;
}

.tl-feature-btn:hover {
    background: var(--tl-gradient-light);
    transform: translateY(-2px);
    box-shadow: var(--tl-shadow);
}

/* 内容信息区 */
.tl-content-section {
    padding: 100px 0;
    background-color: var(--tl-primary-dark);
    position: relative;
    overflow: hidden;
}

.tl-content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(90, 45, 140, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(61, 139, 242, 0.1) 0%, transparent 20%);
    z-index: 0;
}

.tl-content-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    position: relative;
    z-index: 1;
}

.tl-content-card {
    background: var(--tl-white);
    border-radius: var(--tl-radius-lg);
    overflow: hidden;
    box-shadow: var(--tl-shadow-lg);
}

.tl-card-header {
    padding: 30px 30px 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.tl-card-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--tl-dark);
}

.tl-card-body {
    padding: 30px;
}

.tl-card-body p {
    margin-bottom: 20px;
    color: var(--tl-gray);
    line-height: 1.7;
}

/* 文章图片展示 */
.tl-article-images {
    margin: 30px 0;
}

.tl-image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.tl-image-item {
    border-radius: var(--tl-radius);
    overflow: hidden;
    height: 120px;
}

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

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

.tl-info-links {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.tl-insider-link {
    color: var(--tl-primary);
    font-weight: 600;
    text-decoration: none;
}

.tl-insider-link:hover {
    text-decoration: underline;
}

/* 广告卡片 */
.tl-ad-card .tl-card-body {
    display: flex;
    flex-direction: column;
}

.tl-benefit-list {
    margin: 25px 0;
    padding-left: 20px;
}

.tl-benefit-item {
    color: var(--tl-dark);
    margin-bottom: 10px;
    position: relative;
    padding-left: 10px;
}

.tl-benefit-item::before {
    content: '✓';
    color: var(--tl-primary);
    font-weight: bold;
    position: absolute;
    left: -20px;
}

/* 广告图片轮播 */
.tl-ad-images {
    margin: 30px 0;
}

.tl-ad-carousel {
    position: relative;
    height: 250px;
    border-radius: var(--tl-radius);
    overflow: hidden;
    margin-bottom: 15px;
}

.tl-ad-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.tl-ad-slide.active {
    opacity: 1;
}

.tl-ad-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tl-ad-carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.tl-ad-prev,
.tl-ad-next {
    background: var(--tl-light-gray);
    border: none;
    color: var(--tl-dark);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--tl-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tl-ad-prev:hover,
.tl-ad-next:hover {
    background: var(--tl-primary-light);
    color: var(--tl-white);
}

.tl-ad-dots {
    display: flex;
    gap: 8px;
}

.tl-ad-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--tl-light-gray);
    cursor: pointer;
    transition: var(--tl-transition);
}

.tl-ad-dot.active {
    background: var(--tl-primary);
}

/* 公司LOGO展示 */
.tl-logos-section {
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.tl-logos-section h4 {
    font-size: 1.3rem;
    color: var(--tl-dark);
    margin-bottom: 20px;
    text-align: center;
}

.tl-logos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.tl-logo-item {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tl-light-gray);
    border-radius: var(--tl-radius);
    padding: 15px;
}

.tl-logo-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.tl-ad-btn {
    display: inline-block;
    background: var(--tl-gradient);
    color: var(--tl-white);
    padding: 14px 32px;
    border-radius: var(--tl-radius-pill);
    text-decoration: none;
    font-weight: 700;
    text-align: center;
    transition: var(--tl-transition);
    align-self: center;
    margin-top: 20px;
}

.tl-ad-btn:hover {
    background: var(--tl-gradient-light);
    transform: translateY(-2px);
    box-shadow: var(--tl-shadow);
}

/* 联系信息浮动按钮 */
.tl-contact-floating {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 100;
}

.tl-contact-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--tl-gradient);
    border: none;
    color: var(--tl-white);
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--tl-shadow-lg);
    transition: var(--tl-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tl-contact-toggle:hover {
    background: var(--tl-gradient-light);
    transform: scale(1.1);
}

.tl-contact-panel {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 300px;
    background: var(--tl-white);
    border-radius: var(--tl-radius-lg);
    box-shadow: var(--tl-shadow-lg);
    padding: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--tl-transition);
}

.tl-contact-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tl-contact-header {
    padding: 20px;
    background: var(--tl-gradient);
    color: var(--tl-white);
    border-radius: var(--tl-radius-lg) var(--tl-radius-lg) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tl-contact-header h4 {
    margin: 0;
    font-size: 1.3rem;
}

.tl-contact-close {
    background: none;
    border: none;
    color: var(--tl-white);
    font-size: 1.5rem;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tl-contact-body {
    padding: 20px;
}

.tl-contact-item {
    display: flex;
    margin-bottom: 15px;
    align-items: flex-start;
}

.tl-contact-label {
    font-weight: 600;
    color: var(--tl-dark);
    min-width: 70px;
}

.tl-contact-value {
    color: var(--tl-gray);
    flex-grow: 1;
}

.tl-contact-value a {
    color: var(--tl-primary);
    text-decoration: none;
}

.tl-contact-value a:hover {
    text-decoration: underline;
}

/* 页脚区域 */
.tl-footer {
    position: relative;
    background-color: var(--tl-primary-dark);
    color: var(--tl-white);
    padding: 80px 0 30px;
    overflow: hidden;
}

.tl-footer-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.tl-footer-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 10%, rgba(90, 45, 140, 0.2) 0%, transparent 15%),
        radial-gradient(circle at 90% 90%, rgba(61, 139, 242, 0.2) 0%, transparent 15%);
    opacity: 0.5;
}

.tl-footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
    margin-bottom: 60px;
    position: relative;
    z-index: 1;
}

.tl-footer-col {
    display: flex;
    flex-direction: column;
}

.tl-footer-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--tl-white);
}

.tl-footer-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.tl-footer-list a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--tl-transition);
}

.tl-footer-list a:hover {
    color: var(--tl-white);
    padding-left: 5px;
}

.tl-social-links {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.tl-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--tl-white);
    text-decoration: none;
    transition: var(--tl-transition);
    font-weight: 700;
}

.tl-social-link:hover {
    background: var(--tl-primary-light);
    transform: translateY(-3px);
}

.tl-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}

.tl-footer-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.tl-footer-brand-text {
    display: flex;
    flex-direction: column;
}

.tl-footer-site-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
    color: var(--tl-white);
}

.tl-footer-site-subtitle {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.tl-footer-copyright {
    text-align: right;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.tl-footer-copyright p {
    margin: 5px 0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .tl-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tl-content-grid {
        grid-template-columns: 1fr;
    }
    
    .tl-footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tl-hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .tl-mobile-menu-btn {
        display: flex;
    }
    
    .tl-main-nav,
    .tl-header-actions {
        display: none;
    }
    
    .tl-mobile-nav.active {
        display: block;
    }
    
    .tl-hero-title {
        font-size: 2.5rem;
    }
    
    .tl-hero-subtitle {
        font-size: 1.1rem;
    }
    
    .tl-hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .tl-hero-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .tl-features-grid {
        grid-template-columns: 1fr;
    }
    
    .tl-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tl-footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .tl-footer-copyright {
        text-align: center;
    }
    
    .tl-contact-panel {
        width: 280px;
        right: -10px;
    }
    
    .tl-image-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tl-section-title {
        font-size: 2rem;
    }
    
    .tl-hero-title {
        font-size: 2rem;
    }
    
    .tl-feature-title {
        font-size: 1.6rem;
    }
    
    .tl-card-title {
        font-size: 1.6rem;
    }
    
    .tl-footer-grid {
        grid-template-columns: 1fr;
    }
    
    .tl-logos-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tl-image-grid {
        grid-template-columns: 1fr;
    }
}