/* 自定义滚动条样式 - 完全透明背景，滚动条浮在内容上 */

:root {
    --scrollbar-width: 0px;
    --scrollbar-thumb-color: rgba(139, 92, 246, 0.7);
}

/* Webkit 浏览器滚动条 */
::-webkit-scrollbar {
    width: var(--scrollbar-width);
    height: var(--scrollbar-width);
}

/* 滚动条轨道：使用接近 Banner 的深紫色，盖掉白色底 */
/* ::-webkit-scrollbar-track {
    background: #1e1b4b;
    background-color: #1e1b4b;
}

::-webkit-scrollbar-track-piece {
    background: #1e1b4b;
    background-color: #1e1b4b;
}

::-webkit-scrollbar-corner {
    background: #1e1b4b;
    background-color: #1e1b4b;
} */

/* 滚动条滑块 */
/* ::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg,
        rgba(167, 139, 250, 0.8) 0%,
        rgba(139, 92, 246, 0.9) 50%,
        rgba(124, 58, 237, 0.95) 100%);
    border-radius: 100px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 0 15px rgba(139, 92, 246, 0.6),
        0 2px 10px rgba(139, 92, 246, 0.4),
        inset 0 1px 3px rgba(255, 255, 255, 0.5),
        inset 0 -1px 3px rgba(0, 0, 0, 0.2);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
} */

/* ::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg,
        rgba(196, 181, 253, 0.95) 0%,
        rgba(167, 139, 250, 1) 50%,
        rgba(139, 92, 246, 1) 100%);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow:
        0 0 30px rgba(139, 92, 246, 0.9),
        0 0 60px rgba(139, 92, 246, 0.5),
        0 4px 20px rgba(139, 92, 246, 0.6),
        inset 0 1px 4px rgba(255, 255, 255, 0.6),
        inset 0 -1px 4px rgba(0, 0, 0, 0.2);
    transform: scaleX(1.5);
} */

/* ::-webkit-scrollbar-thumb:active {
    background: linear-gradient(180deg,
        rgba(124, 58, 237, 1) 0%,
        rgba(109, 40, 217, 1) 50%,
        rgba(91, 33, 182, 1) 100%);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow:
        0 0 25px rgba(91, 33, 182, 1),
        0 2px 15px rgba(91, 33, 182, 0.8),
        inset 0 2px 6px rgba(0, 0, 0, 0.5);
} */

/* 重置样式和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: scroll;
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* 确保所有section占满宽度 */
section,
.hero,
header,
footer,
nav {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    box-sizing: border-box;
}


/* 加载动画 */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: white;
}

.loader-logo {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    animation: pulse 1.5s ease-in-out infinite;
}

.loader-text {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.loader-progress {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.progress-bar {
    height: 100%;
    background: white;
    border-radius: 2px;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

@keyframes loading {
    0% {
        width: 0%;
    }
    50% {
        width: 70%;
    }
    100% {
        width: 100%;
    }
}


/* 容器 */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    border: 2px solid;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
    background: transparent;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 350px;
    height: 350px;
}

.btn span,
.btn i {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.8);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}



/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 9998;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1600px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
}

.nav-logo i {
    font-size: 28px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 30%, #4c1d95 60%, #5b21b6 100%);
    padding: 0;
}

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

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1.5" fill="rgba(255,255,255,0.1)"/></svg>');
    animation: float 20s infinite linear;
}

.hero-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-content .container {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 60px;
    align-items: center;
    min-height: 100vh;
    padding-top: 80px;
    padding-bottom: 80px;
    overflow: visible;
}

.hero-text {
    color: white;
    max-width: 750px;
}

.hero-label {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.05em;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
    opacity: 0;
}

.hero-title {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 35px;
    color: white;
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
    opacity: 1;
    transform: translateY(50px);
    animation: slideInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.3s;
}

.title-line:nth-child(3) {
    animation-delay: 0.4s;
}

.title-line.highlight {
    background: linear-gradient(120deg, #a78bfa 0%, #c084fc 50%, #e879f9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
    position: relative;
    display: inline-block;
    filter: drop-shadow(0 0 30px rgba(167, 139, 250, 0.4));
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 50px;
    line-height: 1.8;
    max-width: 650px;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
    opacity: 0;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: 32px;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
    opacity: 0;
    margin-top: 20px;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* 英雄区域视觉元素 */
.hero-visual {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
}

.hero-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.floating-elements {
    position: relative;
    width: 200%;
    max-width: 200%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s ease-in-out, visibility 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.floating-card.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.floating-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 30px 80px rgba(0, 0, 0, 0.4));
    max-width: 100%;
    max-height: 100%;
    transform: scale(2);
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%) scale(0.5);
    display: flex;
    gap: 12px;
    z-index: 10;
    pointer-events: auto;
}

.carousel-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: auto;
}

.carousel-indicator.active {
    background: linear-gradient(90deg, #a78bfa 0%, #c084fc 100%);
    width: 30px;
    border-radius: 5px;
    box-shadow: 0 0 15px rgba(167, 139, 250, 0.6);
}

/* 大屏幕优化 */
@media (min-width: 1600px) {
    .hero-visual {
        height: 700px;
    }

    .floating-card img {
        transform: scale(1.5);
        -webkit-transform: scale(1.5);
        -moz-transform: scale(1.5);
        -ms-transform: scale(1.5);
        -o-transform: scale(1.5);
    }
}

@media (min-width: 1920px) {
    .hero-visual {
        height: 800px;
    }

    .floating-card img {
        transform: scale(1.8);
        -webkit-transform: scale(1.8);
        -moz-transform: scale(1.8);
        -ms-transform: scale(1.8);
        -o-transform: scale(1.8);
    }
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 滚动指示器 */
.hero-scroll {
    position: absolute;
    bottom: 50px;
    left: 50%;
    z-index: 2;
    color: white;
    text-align: center;
    animation: bounce 2.5s infinite;
    -webkit-animation: bounce 2.5s infinite;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    opacity: 0.85;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.scroll-indicator i {
    font-size: 24px;
    filter: drop-shadow(0 2px 8px rgba(255, 255, 255, 0.3));
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 0.85;
    }
    40% {
        transform: translateX(-50%) translateY(-12px);
        opacity: 1;
    }
    60% {
        transform: translateX(-50%) translateY(-6px);
        opacity: 0.9;
    }
}



/* 通用section样式 */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

.about-text h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.mission-points {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.point {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.point:hover {
    transform: translateY(-5px);
}

.point i {
    font-size: 24px;
    color: #667eea;
    margin-top: 4px;
}

.point h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 8px;
}

.point p {
    color: #666;
    margin: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-10px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #667eea;
    display: block;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 1rem;
    color: #666;
    font-weight: 500;
}

/* 产品介绍 */
.products {
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    align-items: stretch;
}

@media (min-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 900px) and (max-width: 1199px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 600px) and (max-width: 899px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.product-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.product-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.product-icon i {
    font-size: 24px;
    color: white;
}

.product-card h3 {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 16px;
    font-weight: 600;
}

.product-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    margin-bottom: 24px;
}

.product-features li {
    padding: 8px 0;
    color: #666;
    position: relative;
    padding-left: 20px;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.product-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.product-link:hover {
    color: #764ba2;
    transform: translateX(5px);
}

/* 服务优势 */
.services {
    background: #f8fafc;
}

.services-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.service-item {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.service-number {
    font-size: 3rem;
    font-weight: 700;
    color: #667eea;
    opacity: 0.3;
    min-width: 80px;
}

.service-content h3 {
    font-size: 1.6rem;
    color: #333;
    margin-bottom: 16px;
    font-weight: 600;
}

.service-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-tags span {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 团队介绍 */
.team {
    background: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    align-items: stretch;
}

@media (min-width: 1200px) {
    .team-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 900px) and (max-width: 1199px) {
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 600px) and (max-width: 899px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.team-member {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.member-photo {
    position: relative;
    overflow: hidden;
    height: 280px;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.member-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.team-member:hover .member-overlay {
    opacity: 1;
}

.team-member:hover .member-photo img {
    transform: scale(1.1);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: white;
    color: #667eea;
    transform: scale(1.1);
}

.member-info {
    padding: 25px;
}

.member-info h3 {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 8px;
    font-weight: 600;
}

.member-role {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 12px;
}

.member-desc {
    color: #666;
    line-height: 1.6;
    margin-bottom: 16px;
}

.member-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.member-skills span {
    background: #f1f5f9;
    color: #667eea;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 客户案例 */
.cases {
    background: #f8fafc;
}

.cases-content {
    margin-bottom: 60px;
}

.case-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    background: white;
    border: 2px solid #e2e8f0;
    color: #666;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tab-btn.active,
.tab-btn:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
    color: white;
}

.case-panels {
    position: relative;
}

.case-panel {
    display: none;
}

.case-panel.active {
    display: block;
}

.case-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: stretch;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    min-height: 400px;
}

.case-image {
    height: 300px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.case-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-content h3 {
    font-size: 1.6rem;
    color: #333;
    margin-bottom: 16px;
    font-weight: 600;
}

.case-desc {
    color: #666;
    line-height: 1.6;
    margin-bottom: 30px;
}

.case-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
}

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

.result-number {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    display: block;
    margin-bottom: 4px;
}

.result-label {
    font-size: 0.9rem;
    color: #666;
}

/* 客户反馈 */
.testimonials {
    margin-top: 60px;
    text-align: center;
}

.testimonials h3 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 40px;
    font-weight: 600;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.testimonial-item {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.testimonial-item:hover {
    transform: translateY(-5px);
}

.testimonial-content {
    margin-bottom: 20px;
}

.testimonial-content p {
    font-style: italic;
    color: #666;
    line-height: 1.7;
    position: relative;
}

.testimonial-content p::before {
    content: '"';
    font-size: 3rem;
    color: #667eea;
    position: absolute;
    top: -10px;
    left: -20px;
    font-family: serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

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

.author-info h4 {
    color: #333;
    margin-bottom: 4px;
    font-weight: 600;
}

.author-info p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

/* 联系我们 */
.contact {
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 20px;
    font-weight: 600;
}

.contact-info p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.contact-method:hover {
    background: #f1f5f9;
    transform: translateX(5px);
}

.contact-method i {
    font-size: 24px;
    color: #667eea;
    margin-top: 4px;
}

.contact-method h4 {
    color: #333;
    margin-bottom: 4px;
    font-weight: 600;
}

.contact-method p {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 4px;
}

.contact-method span {
    color: #666;
    font-size: 0.9rem;
}

/* 联系表单 */
.contact-form {
    background: #f8fafc;
    padding: 40px;
    border-radius: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    color: #333;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: white;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 20px;
}

.footer-logo i {
    font-size: 28px;
}

.footer-section p {
    color: #a0aec0;
    line-height: 1.6;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.footer-section ul li i {
    margin-right: 8px;
    color: #667eea;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #2d3748;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #a0aec0;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #2d3748;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #a0aec0;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
        padding-top: 60px;
    }

    .hero-visual {
        height: 300px;
        top: -30%;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .case-item {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .case-image {
        height: 250px;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }

    .products-grid,
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content .container {
        grid-template-columns: 1fr;
        gap: 70px;
        text-align: center;
        min-height: 100vh;
        padding-top: 100px;
        padding-bottom: 100px;
    }

    .hero-text {
        order: 1;
        max-width: 100%;
    }

    .hero-visual {
        order: 2;
        height: auto;
        padding: 20px 0;
    }

    .hero-title {
        font-size: 5rem;
        font-weight: 900;
    }

    .hero-subtitle {
        font-size: 1.35rem;
        font-weight: 300;
        margin: 0 auto 50px;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .hero-content .container {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .hero-visual {
        height: 450px;
        top: -30%;
    }

    .floating-card img {
        transform: scale(1.5);
    }

    .carousel-indicators {
        bottom: -60px;
    }

    .hero-scroll {
        bottom: 35px;
    }

    .btn {
        padding: 20px 45px;
        font-size: 1.1rem;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }

    .service-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .service-number {
        font-size: 2rem;
    }

    .case-tabs {
        flex-direction: column;
        align-items: center;
    }

    .tab-btn {
        width: 100%;
        max-width: 200px;
    }

    .testimonials-slider {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 3.5rem;
        font-weight: 900;
    }

    .hero-subtitle {
        font-size: 1.15rem;
        font-weight: 300;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .hero {
        min-height: 100vh;
    }

    .hero-content .container {
        min-height: 100vh;
        padding-top: 80px;
        padding-bottom: 80px;
        gap: 55px;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-visual {
        height: 350px;
        top: -30%;
    }

    .floating-card img {
        transform: scale(1.2);
    }

    .carousel-indicators {
        bottom: -50px;
    }

    .hero-scroll {
        bottom: 30px;
    }

    .btn {
        padding: 20px 45px;
        font-size: 1.1rem;
    }

    section {
        padding: 60px 0;
    }

    .products-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .case-results {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 25px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* 动画和过渡效果 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}



/* 额外的布局修复 */
.section-header {
    margin-bottom: 60px;
}

.section-title {
    margin-bottom: 20px;
}

/* 确保所有卡片等高 */
.product-features {
    flex-grow: 1;
    margin-bottom: 20px;
}

.product-link {
    margin-top: auto;
}

/* 修复统计数据的对齐 */
.about-stats {
    align-self: flex-start;
}

/* 修复服务项目的间距 */
.service-item:not(:last-child) {
    margin-bottom: 20px;
}

/* 修复表单的样式 */
.contact-form {
    height: fit-content;
}

/* 修复页脚的对齐 */
.footer-section:first-child {
    grid-column: span 2;
}

@media (max-width: 768px) {
    .footer-section:first-child {
        grid-column: span 1;
    }
}