/* ==================== 科技风企业官网 - 主样式 ==================== */
:root {
    --primary-dark: #0d0d1a;
    --secondary-dark: #1a1a2e;
    --tertiary-dark: #16213e;
    --tech-blue: #00d4ff;
    --tech-blue-glow: rgba(0, 212, 255, 0.5);
    --accent-purple: #9d4edd;
    --text-light: #e0e0e0;
    --text-muted: #a0a0a0;
    --border-color: #2a2a4a;
    --gradient-1: linear-gradient(135deg, #00d4ff 0%, #9d4edd 100%);
    --gradient-2: linear-gradient(90deg, transparent, #00d4ff, transparent);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* ==================== 科技背景装饰 ==================== */
.tech-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.tech-grid {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    transform: rotate(45deg);
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: rotate(45deg) translate(0, 0); }
    100% { transform: rotate(45deg) translate(50px, 50px); }
}

.tech-lines {
    position: absolute;
    width: 100%;
    height: 100%;
}

.tech-line {
    position: absolute;
    height: 1px;
    background: var(--gradient-2);
    opacity: 0.6;
    animation: lineMove 8s linear infinite;
}

@keyframes lineMove {
    0% { transform: translateX(-100%); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { transform: translateX(100%); opacity: 0; }
}

/* ==================== 粒子画布 ==================== */
#particlesCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ==================== Header ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999999999 !important;
    background: rgba(13, 13, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.header .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    position: relative;
    z-index: 999999999 !important;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 999999999 !important;
}

.logo-icon-img {
    height: 50px;
    filter: drop-shadow(0 0 10px var(--tech-blue-glow));
}

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

.company-name {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-badge {
    font-size: 0.75rem;
    color: var(--tech-blue);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
    position: relative;
    z-index: 999999999 !important;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--tech-blue);
    transition: width 0.3s ease;
}

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

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--tech-blue);
    text-shadow: 0 0 20px var(--tech-blue-glow);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
}

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

.btn-outline-primary:hover {
    background: var(--tech-blue);
    color: var(--primary-dark);
    box-shadow: 0 0 30px var(--tech-blue-glow);
}

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

.btn-outline {
    border: 2px solid white;
    color: white;
    background: transparent;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ==================== Banner ==================== */
.banner {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    z-index: 0 !important;
}

.banner-slider {
    width: 100%;
    position: relative;
    z-index: 0 !important;
}

.banner-slider * {
    z-index: 0 !important;
    position: relative !important;
}

.banner-item {
    width: 100%;
    padding: 4rem 2rem;
    display: none;
    animation: fadeIn 0.8s ease;
}

.banner-item.active {
    display: block;
}

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

.banner-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.banner-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner-text p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.banner-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.banner-image {
    position: relative;
}

.tech-circle {
    width: 400px;
    height: 400px;
    border: 2px solid var(--tech-blue);
    border-radius: 50%;
    position: relative;
    margin: 0 auto;
    animation: rotate 20s linear infinite;
    z-index: 0 !important;
}

.tech-circle::before,
.tech-circle::after {
    z-index: 0 !important;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tech-circle::before,
.tech-circle::after {
    content: '';
    position: absolute;
    border: 1px solid var(--tech-blue);
    border-radius: 50%;
}

.tech-circle::before {
    top: 20%;
    left: 20%;
    right: 20%;
    bottom: 20%;
    border-style: dashed;
}

.tech-circle::after {
    top: 10%;
    left: 10%;
    right: 10%;
    bottom: 10%;
}

.banner-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.3);
    border: 2px solid var(--tech-blue);
    cursor: pointer;
    transition: all 0.3s ease;
}

.banner-dot.active {
    background: var(--tech-blue);
    box-shadow: 0 0 15px var(--tech-blue-glow);
}

/* ==================== Section ==================== */
.section {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

.section-alt {
    background: var(--secondary-dark);
}

.section-blue {
    background: linear-gradient(135deg, var(--tertiary-dark) 0%, var(--secondary-dark) 100%);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== Quick Guide ==================== */
.quick-guide {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

a.quick-guide-card, .quick-guide-card {
    background: var(--secondary-dark);
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: block;
    cursor: pointer;
}

a.quick-guide-card:hover {
    text-decoration: none;
}

.quick-guide-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.quick-guide-card:hover::before {
    transform: scaleX(1);
}

.quick-guide-card:hover {
    border-color: var(--tech-blue);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.guide-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.guide-desc {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.guide-products {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================== Product Grid ==================== */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--tech-blue);
    box-shadow: var(--shadow-glow);
}

.product-card-header {
    padding: 2rem 2rem 1rem;
    position: relative;
}

.product-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--tech-blue);
    color: var(--primary-dark);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.product-badge.hot {
    background: #ff6b6b;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.product-subtitle {
    color: var(--text-muted);
}

.product-card-body {
    padding: 0 2rem 1rem;
}

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

.feature-list li {
    padding: 0.5rem 0;
    color: var(--text-light);
    padding-left: 1.25rem;
    position: relative;
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--tech-blue);
}

.product-card-footer {
    padding: 1.5rem 2rem 2rem;
    border-top: 1px solid var(--border-color);
}

/* ==================== Advantages ==================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.advantage-card {
    text-align: center;
    padding: 2rem;
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.advantage-card:hover {
    border-color: var(--tech-blue);
    box-shadow: var(--shadow-glow);
}

.adv-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--tech-blue);
}

.advantage-card p {
    color: var(--text-muted);
}

/* ==================== Stats ==================== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
}

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

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    color: var(--text-muted);
}

/* ==================== Progress Bar ==================== */
.progress-section {
    padding: 4rem 0;
}

.progress-item {
    margin-bottom: 2rem;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 8px;
    background: var(--tertiary-dark);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-1);
    border-radius: 4px;
    transition: width 1.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ==================== CTA Section ==================== */
.cta-section {
    padding: 6rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-2);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--secondary-dark);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.footer-logo .logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
}

.footer-col h4 {
    color: var(--tech-blue);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

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

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: var(--tech-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* ==================== Modal ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 13, 26, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: var(--shadow-glow);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--tech-blue);
}

.modal h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--tech-blue);
}

/* ==================== Forms ==================== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-light);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.875rem;
    background: var(--primary-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-light);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--tech-blue);
    box-shadow: 0 0 15px var(--tech-blue-glow);
}

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

.editor-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==================== Scroll to Top ==================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: var(--shadow-glow);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

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

/* ==================== Mobile ==================== */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 999999999 !important;
    position: relative !important;
}

.mobile-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--tech-blue);
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 1024px) {
    .banner-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .quick-guide,
    .advantages-grid,
    .stats-row,
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-circle {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    /* ==================== 移动端基础优化 ==================== */
    * {
        -webkit-tap-highlight-color: transparent;
    }
    
    body {
        font-size: 15px;
    }
    
    /* ==================== Header 移动端优化 ==================== */
    .header .container {
        padding: 0 1rem;
        height: 70px;
    }
    
    .logo-icon-img {
        height: 40px;
    }
    
    .company-name {
        font-size: 1rem;
    }
    
    .mobile-toggle {
        display: block;
        padding: 0.75rem;
        z-index: 999999999 !important;
    }
    
    .mobile-toggle span {
        width: 28px;
        height: 3px;
        background: var(--tech-blue);
        border-radius: 2px;
        margin: 6px 0;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(13, 13, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2.5rem 2rem;
        gap: 1.25rem;
        transform: translateX(-100%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        border-top: 1px solid rgba(0, 212, 255, 0.1);
        z-index: 999999998 !important;
    }
    
    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
    }
    
    .nav-menu a {
        font-size: 1.125rem;
        padding: 1rem;
        border-radius: 12px;
        background: rgba(0, 212, 255, 0.05);
        transition: all 0.3s ease;
    }
    
    .nav-menu a::after {
        display: none;
    }
    
    .nav-menu a:hover,
    .nav-menu a.active {
        background: rgba(0, 212, 255, 0.15);
        color: var(--tech-blue);
        text-shadow: 0 0 10px var(--tech-blue-glow);
    }
    
    /* ==================== Banner 移动端优化 ==================== */
    .banner {
        padding-top: 70px;
        min-height: 90vh;
    }
    
    .banner-item {
        padding: 2.5rem 1rem;
    }
    
    .banner-content {
        gap: 2rem;
    }
    
    .banner-text h1 {
        font-size: 1.875rem;
        line-height: 1.3;
    }
    
    .banner-text p {
        font-size: 1rem;
    }
    
    .banner-buttons {
        justify-content: center;
    }
    
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
        width: 100%;
        max-width: 280px;
    }
    
    .tech-circle {
        width: 220px;
        height: 220px;
    }
    
    .banner-dots {
        bottom: 1.5rem;
    }
    
    .banner-dot {
        width: 10px;
        height: 10px;
    }
    
    /* ==================== Section 移动端优化 ==================== */
    .section {
        padding: 3.5rem 1rem;
    }
    
    .section-header {
        margin-bottom: 2.5rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    /* ==================== 卡片和模块 移动端美化 ==================== */
    .quick-guide-card,
    .product-card,
    .advantage-card,
    .industry-card,
    .case-card,
    .card,
    .contact-card,
    .about-main,
    .contact-form-wrapper {
        border-radius: 16px !important;
        padding: 1.75rem !important;
    }
    
    .quick-guide-card::before {
        height: 4px;
    }
    
    .quick-guide-card:hover,
    .product-card:hover,
    .advantage-card:hover,
    .industry-card:hover,
    .case-card:hover,
    .card:hover {
        transform: translateY(-3px);
    }
    
    .guide-icon,
    .adv-icon,
    .industry-icon,
    .card-icon {
        font-size: 2.5rem !important;
    }
    
    .product-badge {
        border-radius: 16px;
        padding: 0.35rem 0.875rem;
    }
    
    .case-industry {
        border-radius: 16px;
    }
    
    /* ==================== 网格布局 移动端单列 ==================== */
    .quick-guide,
    .advantages-grid,
    .stats-row,
    .footer-grid,
    .grid-4,
    .industry-grid,
    .case-grid,
    .grid-3 {
        grid-template-columns: 1fr !important;
        gap: 1.25rem !important;
    }
    
    /* ==================== 统计数字 移动端优化 ==================== */
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-label {
        font-size: 1rem;
    }
    
    /* ==================== Footer 移动端优化 ==================== */
    .footer {
        padding: 3rem 1rem 1.5rem;
    }
    
    .footer-grid {
        gap: 1.5rem;
    }
    
    .footer-brand .footer-logo {
        justify-content: center;
    }
    
    /* ==================== Modal 移动端优化 ==================== */
    .modal {
        width: 92%;
        padding: 1.75rem;
        border-radius: 20px;
    }
    
    .modal-close {
        top: 0.75rem;
        right: 0.75rem;
        font-size: 1.75rem;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* ==================== Form 移动端优化 ==================== */
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 0.875rem 1rem;
        border-radius: 12px;
        font-size: 16px; /* 防止 iOS 缩放 */
    }
    
    /* ==================== Buttons 移动端优化 ==================== */
    .btn {
        padding: 0.75rem 1.25rem;
        border-radius: 12px;
    }
    
    .btn-sm {
        padding: 0.5rem 0.875rem;
        font-size: 0.875rem;
    }
    
    .case-filters {
        gap: 0.625rem;
    }
    
    .case-filter-btn {
        padding: 0.625rem 1.25rem;
        border-radius: 20px;
        font-size: 0.9rem;
    }
    
    /* ==================== Page Hero 移动端优化 ==================== */
    .page-hero {
        padding: 110px 1rem 50px;
    }
    
    .page-hero h1 {
        font-size: 2rem;
    }
    
    .page-hero p {
        font-size: 1rem;
    }
    
    /* ==================== 滚动到顶部按钮 移动端优化 ==================== */
    .scroll-top {
        width: 45px;
        height: 45px;
        bottom: 1.5rem;
        right: 1.5rem;
        font-size: 1.125rem;
    }
    
    /* ==================== 行业卡片 移动端优化 ==================== */
    .industry-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem !important;
    }
    
    /* ==================== 关于我们 移动端优化 ==================== */
    .about-content {
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
    }
    
    .section-title {
        font-size: 1.5rem;
        padding-left: 0.875rem;
    }
    
    .contact-info-item {
        padding: 0.875rem 0;
    }
    
    /* ==================== 图片优化 ==================== */
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    
    /* ==================== 防止横向滚动 ==================== */
    html, body {
        overflow-x: hidden;
        width: 100%;
    }
    
    /* ==================== CTA 移动端优化 ==================== */
    .cta-section {
        padding: 3.5rem 1rem;
    }
    
    .cta-section h2 {
        font-size: 1.75rem;
    }
    
    .cta-section p {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* ==================== 平滑过渡 ==================== */
    .mobile-toggle,
    .nav-menu,
    .btn,
    .case-filter-btn {
        will-change: transform, opacity;
    }
}

/* ==================== 小屏幕额外优化 (max-width: 480px) ==================== */
@media (max-width: 480px) {
    .banner-text h1 {
        font-size: 1.625rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .tech-circle {
        width: 180px;
        height: 180px;
    }
    
    .quick-guide-card,
    .product-card,
    .advantage-card,
    .industry-card,
    .case-card,
    .card {
        padding: 1.5rem !important;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ==================== Animations ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ==================== Page Hero ==================== */
.page-hero {
    padding: 150px 2rem 80px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
}

/* ==================== Industry Cards ==================== */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 2rem;
}

.industry-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    transition: all 0.3s ease;
}

.industry-card:hover {
    border-color: var(--tech-blue);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.industry-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.industry-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--tech-blue);
}

.industry-pain {
    color: #ff6b6b;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

.industry-pain::before {
    content: '⚠';
    position: absolute;
    left: 0;
}

.industry-solution {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==================== Case Filters ==================== */
.case-filters {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.case-filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    border-radius: 30px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.case-filter-btn:hover {
    border-color: var(--tech-blue);
    color: var(--tech-blue);
}

.case-filter-btn.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
    box-shadow: 0 0 20px var(--tech-blue-glow);
}

/* ==================== Case Grid ==================== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--tech-blue);
    box-shadow: var(--shadow-glow);
}

.case-card-header {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.case-industry {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--tech-blue);
    color: var(--primary-dark);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
    margin-bottom: 0.75rem;
}

.case-card-header h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.case-product {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.case-card-body {
    padding: 2rem;
}

.case-result {
    list-style: none;
}

.case-result li {
    padding: 0.5rem 0;
    color: var(--text-light);
    padding-left: 1.25rem;
    position: relative;
}

.case-result li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--tech-blue);
    font-weight: bold;
}

.case-card-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
}

/* ==================== Card (for more industry) ==================== */
.card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--tech-blue);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--tech-blue);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .industry-grid {
        grid-template-columns: 1fr;
    }
    
    .industry-card {
        flex-direction: column;
        text-align: center;
    }
}

/* 关于我们页面样式 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 3rem;
}

.about-main {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
}

.about-sidebar {
    display: flex;
    flex-direction: column;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 4px solid var(--tech-blue);
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.1), transparent);
    color: var(--tech-blue);
}

.subsection-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.product-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 1rem;
}

.product-list li {
    padding: 0.75rem 0;
    color: var(--text-light);
    padding-left: 1.5rem;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.product-list li:last-child {
    border-bottom: none;
}

.product-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--tech-blue);
    font-weight: bold;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.contact-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.contact-card h3 {
    color: var(--tech-blue);
    margin-bottom: 1.5rem;
    text-align: center;
}

.contact-info-item {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
}

.contact-info-item:last-child {
    border-bottom: none;
}

.contact-info-item span:first-child {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-form-wrapper {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-sidebar {
        order: -1;
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-3 {
        grid-template-columns: 1fr;
    }
}