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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* ===== Design Tokens & Unified Section Backgrounds ===== */
:root {
    --c-brand: #3498db;
    --c-accent: #764ba2;
    --c-surface: #ffffff;
    --c-soft-1: #f5f9ff;
    --c-soft-2: #eef4fb;
    --c-border: #e3ecf5;
    --gradient-section: linear-gradient(135deg,var(--c-soft-1) 0%, var(--c-soft-2) 100%);
    --gradient-section-alt: linear-gradient(135deg,var(--c-soft-2) 0%, var(--c-soft-1) 100%);
    --gradient-radials: radial-gradient(circle at 8% 18%,rgba(52,152,219,.10),transparent 55%), radial-gradient(circle at 92% 82%,rgba(118,75,162,.10),transparent 55%);
    --shadow-card: 0 6px 18px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.05);
    --radius-card: 18px;
}

.section-bg, .section-bg-alt { position: relative; overflow: hidden; }
.section-bg { background: var(--gradient-section); }
.section-bg-alt { background: var(--gradient-section-alt); }
.section-bg:before, .section-bg-alt:before { content:""; position:absolute; inset:0; background: var(--gradient-radials); pointer-events:none; }

.surface-card { background: var(--c-surface); border:1px solid var(--c-border); border-radius: var(--radius-card); box-shadow: var(--shadow-card); position:relative; overflow:hidden; transition:.35s cubic-bezier(.4,0,.2,1); }
.surface-card:before { content:""; position:absolute; inset:0; background: radial-gradient(circle at 85% 15%,rgba(52,152,219,.13),transparent 60%); pointer-events:none; }
.surface-card:hover { transform:translateY(-6px); box-shadow:0 12px 28px rgba(0,0,0,.12); }

/* 标题图标样式 */
.hero-title .fas,
.section-title .fas,
.feature-text h3 .fas,
.case-content h3 .fas,
.about-feature h4 .fas {
    margin-right: 0.5rem;
    color: #3498db;
}

.hero-title .fas {
    font-size: 0.9em;
    color: #3498db;
}

/* Font Awesome 图标样式 */
.fas, .fab {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands";
    font-weight: 900;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.fab {
    font-weight: 400;
}

/* 图标尺寸定义 */
.icon-sm { font-size: 14px; }
.icon-md { font-size: 18px; }
.icon-lg { font-size: 24px; }
.icon-xl { font-size: 32px; }
.icon-xxl { font-size: 48px; }

/* 图标颜色类 */
.text-primary { color: #3498db !important; }
.text-success { color: #27ae60 !important; }
.text-warning { color: #f39c12 !important; }
.text-danger { color: #e74c3c !important; }
.text-white { color: #ffffff !important; }

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
}

.nav-logo img {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-menu a .fas {
    font-size: 16px;
}

.nav-menu a:hover {
    color: #3498db;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-cta {
    background: #3498db !important;
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: #2980b9 !important;
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅样式 */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
    background: #e9f1fa;
    isolation: isolate; /* 使混合模式更安全 */
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 2rem 20px 3rem;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.hero-title .highlight {
    display: block;
    color: #3498db;
    font-size: 0.8em;
    margin-top: 0.5rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary, .btn-secondary {
    padding: 0.8rem 2rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #3498db;
    border: 2px solid #3498db;
}

.btn-secondary:hover {
    background: #3498db;
    color: white;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #3498db;
}

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

/* 背景整合：使用 before 图层承载背景图与渐变，hero-image 仅保留装饰定位 */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.80) 45%, rgba(255,255,255,0.65) 65%, rgba(215,235,252,0.55) 100%),
                url("../images/back1.jpg") center/cover no-repeat;
    filter: saturate(105%) contrast(102%);
    z-index: 1;
}

.hero-image {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 55%;
    max-width: 880px;
    pointer-events: none;
    opacity: 0.35;
    mix-blend-mode: multiply;
    text-align: right;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    border: none;
}

/* hero 文本区域微调：让标题与统计更紧凑 */
.hero-content { position: relative; z-index: 2; }
.hero-title { margin-top: 1rem; }
.hero-stats { flex-wrap: wrap; justify-content: flex-start; }
.hero-stats .stat { min-width: 110px; }

/* 辅助：减少初次渲染布局抖动（预留高度） */
@media (min-width: 1200px) { .hero { min-height: 780px; } }

@media (max-width: 1024px) {
    .hero-image { width: 60%; opacity: 0.32; }
}

@media (max-width: 768px) {
    .hero { min-height: unset; }
    .hero-container { grid-template-columns: 1fr; gap: 2.2rem; padding-top: 1rem; }
    .hero-image { position: static; transform:none; width:100%; opacity:0.4; mix-blend-mode: normal; margin-top: 0.5rem; }
    .hero-image img { aspect-ratio: 16/9; object-fit: cover; }
}

@media (prefers-reduced-motion: reduce) {
    .hero-image, .hero::before { animation: none !important; }
}

/* 通用区块样式 */
.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.section-subtitle {
    font-size: 1.1rem;
    text-align: center;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 产品服务样式（统一背景：在 HTML 可添加 section-bg 或由此处默认） */
.products { padding:5rem 0; }

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

/* 使用统一 surface-card 外观（原样式精简） */
.product-card { padding:2rem; }
.product-card { border-radius: var(--radius-card); }

.product-card.featured {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.product-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: #e74c3c;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card.featured .product-icon {
    background: rgba(255,255,255,0.2);
}

.product-icon img {
    width: 40px;
    height: 40px;
}

.product-icon .fas {
    font-size: 40px;
    color: #3498db;
}

.product-card.featured .product-icon .fas {
    color: #fff;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.product-card p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-list li::before {
    content: '';
    display: none;
}

.feature-list li .fas {
    color: #27ae60;
    font-size: 14px;
    margin-left: -1.5rem;
}

.product-card.featured .feature-list li .fas {
    color: #fff;
}

/* 旧渐变与光斑移除，交由 .section-bg 控制 */

.products-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px,1fr));
    gap: 2.2rem;
}

/* surface-card 已含阴影与 before 效果 */

.product-card.featured { background: linear-gradient(135deg,#667eea 0%, #764ba2 100%); box-shadow:0 12px 28px -4px rgba(102,126,234,.55); }
.product-card.featured:before { background: radial-gradient(circle at 25% 20%,rgba(255,255,255,.22),transparent 60%); mix-blend-mode: overlay; }

.product-icon { background: linear-gradient(135deg,#ecf4fb,#f2f8ff); box-shadow: inset 0 0 0 1px #d9e6f2; }
.product-card.featured .product-icon { background: rgba(255,255,255,.18); box-shadow:none; }
.product-icon .fas { color:#3498db; }
.product-card.featured .product-icon .fas { color:#fff; }

.product-card h3 { font-size:1.25rem; }
.product-card p { font-size:.95rem; color:#5a6b7b; }
.product-card.featured p { color:rgba(255,255,255,.92); }

.feature-list li { font-size:.88rem; color:#455463; }
.product-card.featured .feature-list li { color:rgba(255,255,255,.9); }

@media (max-width: 640px){
  .products-grid { grid-template-columns: repeat(auto-fit,minmax(260px,1fr)); }
  .product-card { padding:1.5rem 1.25rem 1.6rem; }
  .product-card h3 { font-size:1.15rem; }
  .product-card p { font-size:.9rem; }
}

/* 功能特色样式 */
.features {
    padding: 5rem 0;
    background: #f8f9fa;
}

.features-content {
    margin-top: 3rem;
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.feature-item.reverse {
    direction: rtl;
}

.feature-item.reverse > * {
    direction: ltr;
}

.feature-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

/* 占位：移除 back2.jpg 后的安全图片容器，保持尺寸与视觉一致 */
.security-placeholder {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: 10px;
    background: linear-gradient(135deg, #e0e7ef 0%, #f5f7fa 100%);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #64748b;
    position: relative;
    overflow: hidden;
}

.security-placeholder::after {
    content: "数据安全";
    letter-spacing: 2px;
    opacity: 0.45;
}

.feature-text h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.feature-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #666;
}

.feature-text ul {
    list-style: none;
}

.feature-text li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #555;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-text li::before {
    content: '';
    display: none;
}

.feature-text li .fas {
    margin-left: -1.5rem;
    font-size: 14px;
}

/* 刑辩大师解决方案（背景改由 .section-bg / .section-bg-alt 控制） */
.master-solution { padding:5rem 0; }
.master-head .section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
}
.master-grid {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.master-card { padding:1.75rem 1.6rem 1.9rem; border-radius: var(--radius-card); }
.mc-icon { width:58px; height:58px; border-radius:16px; background:linear-gradient(135deg,#3498db,#5dade2); display:flex;align-items:center;justify-content:center; color:#fff; font-size:26px; margin-bottom:1.1rem; box-shadow:0 6px 14px -4px rgba(52,152,219,.55); }
.master-card h3 { font-size:1.15rem; font-weight:600; line-height:1.4; color:#1f2d3d; margin:0 0 .75rem; }
.master-card p { font-size:.95rem; line-height:1.55; color:#5a6b7b; margin:0 0 1rem; flex-grow:0; }
.mc-list { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:.4rem; font-size:.88rem; }
.mc-list li { display:flex; align-items:flex-start; gap:.45rem; color:#455463; line-height:1.4; }
.mc-list li i { color:#27ae60; font-size:.85rem; margin-top:2px; }

.master-outcomes { margin-top:3.2rem; display:grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap:1.2rem; }
.outcome { background:#fff; border:1px solid #e3ecf5; border-radius:14px; padding:1rem 1.1rem 1.05rem; text-align:center; position:relative; overflow:hidden; }
.outcome:after { content:""; position:absolute; inset:0; background:linear-gradient(140deg,rgba(52,152,219,.08),rgba(255,255,255,0)); pointer-events:none; }
.o-num { display:block; font-size:1.25rem; font-weight:700; color:#3498db; letter-spacing:.5px; }
.o-label { display:block; font-size:.75rem; color:#5d6d7e; margin-top:.25rem; letter-spacing:.5px; }

@media (min-width:1400px){
  .master-solution:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 12% 18%,rgba(52,152,219,.10),transparent 55%),radial-gradient(circle at 88% 80%,rgba(118,75,162,.12),transparent 50%);}  
}

@media (max-width:768px){
  .master-solution { padding:3.5rem 0; }
  .master-card { padding:1.4rem 1.25rem 1.55rem; }
  .mc-icon { width:50px;height:50px;font-size:22px;border-radius:14px; }
  .master-card h3 { font-size:1.05rem; }
  .master-card p { font-size:.9rem; }
  .mc-list { font-size:.82rem; }
  .o-num { font-size:1.1rem; }
}

/* 成功案例样式 */
.cases { padding:5rem 0; }

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.case-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    padding: 2rem;
}

.case-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.case-type {
    color: #3498db;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.case-description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.case-stats {
    display: flex;
    justify-content: space-between;
}

.case-stat {
    text-align: center;
}

.case-stat .stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #3498db;
}

.case-stat .stat-label {
    font-size: 0.8rem;
    color: #666;
}

/* 客户评价样式 */
.testimonials { padding:5rem 0; }

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: #fff;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 2rem;
    font-style: italic;
    position: relative;
}

.testimonial-content p::before {
    content: '"';
    font-size: 3rem;
    color: #3498db;
    position: absolute;
    top: -10px;
    left: -10px;
    font-family: serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: #2c3e50;
}

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

/* 关于我们样式 */
.about { padding:5rem 0; }

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 2rem;
}

.about-features {
    margin-top: 2rem;
}

.about-feature {
    margin-bottom: 1.5rem;
}

.about-feature h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.about-feature p {
    color: #666;
    line-height: 1.6;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.company-info {
    margin-top: 4rem;
}

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

.info-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.info-item ul {
    list-style: none;
}

.info-item li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
    line-height: 1.6;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-item li::before {
    content: '';
    display: none;
}

.info-item li .fas {
    margin-left: -1.5rem;
    font-size: 16px;
}

/* 联系我们样式 */
.contact { padding:5rem 0; }

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: #3498db;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon img {
    width: 30px;
    height: 30px;
    filter: brightness(0) invert(1);
}

.contact-icon .fas, .contact-icon .fab {
    font-size: 30px;
    color: #fff;
}

.contact-text h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.contact-text p {
    color: #666;
    line-height: 1.6;
}

.qr-code {
    width: 100px;
    height: 100px;
    margin-top: 0.5rem;
}

.contact-form {
    background: #fff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e1e1e1;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: #fff;
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 40px;
    height: 40px;
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background: #3498db;
}

.social-links img {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #3498db;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright p {
    color: #95a5a6;
    font-size: 0.9rem;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #95a5a6;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #3498db;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .feature-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-item.reverse {
        direction: ltr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .products-grid,
    .cases-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}