/* ===================================
   苏州数之光 - 炫酷深色科技风格
   =================================== */

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

:root {
    /* 深色背景系 */
    --bg-primary: #050508;
    --bg-secondary: #0a0a10;
    --bg-tertiary: #0f0f18;
    --bg-card: #12121c;
    --bg-card-hover: #1a1a28;
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-tertiary: #707080;
    
    /* 品牌色 */
    --primary-blue: #00e5ff;
    --primary-blue-dark: #00b8cc;
    --primary-purple: #7c3aed;
    --primary-pink: #ec4899;
    
    /* 渐变 */
    --gradient-cyber: linear-gradient(135deg, #00e5ff 0%, #7c3aed 50%, #ec4899 100%);
    --gradient-blue: linear-gradient(135deg, #00e5ff 0%, #0091ff 100%);
    --gradient-purple: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
    --gradient-dark: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0) 100%);
    
    /* 霓虹效果 */
    --neon-blue: 0 0 20px rgba(0, 229, 255, 0.5), 0 0 40px rgba(0, 229, 255, 0.3);
    --neon-purple: 0 0 20px rgba(124, 58, 237, 0.5), 0 0 40px rgba(124, 58, 237, 0.3);
    --neon-pink: 0 0 20px rgba(236, 72, 153, 0.5), 0 0 40px rgba(236, 72, 153, 0.3);
    
    /* 边框 */
    --border-primary: #1a1a28;
    --border-glow: 0 0 15px rgba(0, 229, 255, 0.3);
    
    /* 阴影 */
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.2);
    --shadow-glow-purple: 0 0 30px rgba(124, 58, 237, 0.2);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
        'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* 动态背景粒子 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 229, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.02) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* ===================================
   导航栏 - 霓虹效果
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(5, 5, 8, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 229, 255, 0.1);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(5, 5, 8, 0.98);
    border-bottom: 1px solid rgba(0, 229, 255, 0.2);
    box-shadow: var(--shadow-glow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 45px;
    height: 45px;
    object-fit: contain;
    border-radius: 10px;
    transition: var(--transition-normal);
}

.logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.company-name {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 1px;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: glowPulse 2s ease-in-out infinite alternate;
}

.company-name::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-cyber);
    border-radius: 2px;
    animation: expandLine 2s ease-in-out infinite;
}

@keyframes glowPulse {
    from {
        filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.3));
    }
    to {
        filter: drop-shadow(0 0 20px rgba(124, 58, 237, 0.5));
    }
}

@keyframes expandLine {
    0%, 100% { transform: scaleX(0.8); opacity: 0.6; }
    50% { transform: scaleX(1); opacity: 1; }
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-cyber);
    transition: var(--transition-fast);
    box-shadow: var(--neon-blue);
}

.nav-link:hover {
    color: var(--primary-blue);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.nav-link:hover::before {
    width: 100%;
}

/* 软件下载下拉菜单 */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
    user-select: none;
}

.dropdown-arrow {
    display: inline-block;
    font-size: 0.75rem;
    margin-left: 0.25rem;
    transition: transform 0.3s ease;
}

.nav-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 230px;
    background: rgba(10, 10, 15, 0.98);
    border: 1px solid rgba(0, 229, 255, 0.25);
    border-radius: 10px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.1);
    z-index: 1001;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.dropdown-item:hover {
    color: var(--primary-blue);
    background: rgba(0, 229, 255, 0.08);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}

/* OpenClaw小龙虾导航链接 */
.openclaw-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(255, 77, 77, 0.1) 0%, rgba(153, 27, 27, 0.1) 100%);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.openclaw-link::before {
    display: none;
}

.openclaw-link::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 77, 77, 0.3), transparent);
    transition: var(--transition-slow);
}

.openclaw-link:hover::after {
    left: 100%;
}

.openclaw-link:hover {
    background: linear-gradient(135deg, rgba(255, 77, 77, 0.2) 0%, rgba(153, 27, 27, 0.2) 100%);
}

.openclaw-icon {
    font-size: 1.5rem;
    display: inline-block;
    animation: lobsterFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 0 10px rgba(255, 77, 77, 0.5));
}

@keyframes lobsterFloat {
    0%, 100% {
        transform: translateY(0) rotate(-5deg);
    }
    50% {
        transform: translateY(-5px) rotate(5deg);
    }
}

.openclaw-text {
    font-weight: 700;
    background: linear-gradient(135deg, #ff4d4d 0%, #ff6b6b 50%, #ff8787 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textGlow 2s ease-in-out infinite alternate;
}

@keyframes textGlow {
    from {
        filter: drop-shadow(0 0 5px rgba(255, 77, 77, 0.5));
    }
    to {
        filter: drop-shadow(0 0 15px rgba(255, 77, 77, 0.8));
    }
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 8px;
    cursor: pointer;
    padding: 8px;
    gap: 5px;
    transition: var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: rgba(0, 229, 255, 0.2);
    border-color: var(--primary-blue);
    box-shadow: var(--neon-blue);
}

.hamburger {
    width: 24px;
    height: 2px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: var(--transition-normal);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* 菜单按钮激活状态 */
.mobile-menu-btn.active .hamburger {
    background: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ===================================
   首页横幅 - 赛博朋克风格
   =================================== */
.hero {
    padding: 12rem 0 6rem;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(0, 229, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 40%);
    animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: titleEntrance 1.2s ease-out;
}

.title-main {
    font-size: 4.5rem;
    font-weight: 900;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: gradientShift 3s ease-in-out infinite alternate;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.title-main::before {
    content: 'SUZHOU';
    position: absolute;
    top: -0.8rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.4rem;
    color: var(--primary-blue);
    opacity: 0.7;
    white-space: nowrap;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.title-main::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-cyber);
    border-radius: 3px;
    animation: expandGlow 2s ease-in-out infinite alternate;
}

.title-sub {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.title-sub::before,
.title-sub::after {
    content: '';
    width: 30px;
    height: 2px;
    background: var(--gradient-blue);
    animation: expandGlow 2s ease-in-out infinite alternate;
}

@keyframes titleEntrance {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes gradientShift {
    from {
        background-position: 0% 50%;
        filter: drop-shadow(0 0 20px rgba(0, 229, 255, 0.4));
    }
    to {
        background-position: 100% 50%;
        filter: drop-shadow(0 0 30px rgba(124, 58, 237, 0.6));
    }
}

@keyframes expandGlow {
    from {
        transform: scaleX(0.7);
        opacity: 0.6;
        box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
    }
    to {
        transform: scaleX(1);
        opacity: 1;
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.6),
                    0 0 40px rgba(124, 58, 237, 0.4);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 0.7;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
    font-weight: 400;
}

.hero-features {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3.5rem;
}

.feature-tag {
    background: rgba(0, 229, 255, 0.05);
    color: var(--primary-blue);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid rgba(0, 229, 255, 0.2);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.feature-tag:hover {
    border-color: var(--primary-blue);
    background: rgba(0, 229, 255, 0.1);
    box-shadow: var(--neon-blue);
    transform: translateY(-3px);
}

.feature-tag:hover::before {
    left: 100%;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-blue);
    color: var(--bg-primary);
    box-shadow: var(--neon-blue);
    border: 2px solid transparent;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: var(--transition-slow);
}

.btn-primary:hover {
    box-shadow: 0 0 40px rgba(0, 229, 255, 0.6), 0 0 60px rgba(0, 229, 255, 0.4);
    transform: translateY(-3px) scale(1.02);
}

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

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(0, 229, 255, 0.1);
    box-shadow: var(--neon-blue);
    transform: translateY(-3px);
}

.btn-block {
    width: 100%;
}

/* ===================================
   通用区块样式
   =================================== */
section {
    padding: 6rem 0;
    position: relative;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 0.75rem;
    letter-spacing: -1px;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.15rem;
    margin-bottom: 4rem;
    font-weight: 400;
}

/* ===================================
   产品服务区块 - 玻璃卡片
   =================================== */
.products {
    background: var(--bg-primary);
}

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

.product-card {
    background: rgba(18, 18, 28, 0.8);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 229, 255, 0.1);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-cyber);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.product-card:hover {
    border-color: rgba(0, 229, 255, 0.3);
    background: var(--bg-card-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow-purple);
}

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

.product-card.featured {
    border-color: var(--primary-blue);
    background: linear-gradient(180deg, rgba(0, 229, 255, 0.08) 0%, rgba(18, 18, 28, 0.9) 100%);
}

.product-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--gradient-blue);
    color: var(--bg-primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: var(--neon-blue);
}

.product-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-cyber);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.75rem;
    color: white;
    box-shadow: var(--neon-purple);
    transition: var(--transition-normal);
}

.product-card:hover .product-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 30px rgba(124, 58, 237, 0.6);
}

.product-icon svg {
    width: 32px;
    height: 32px;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
    letter-spacing: -0.5px;
}

.product-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1rem;
}

.product-tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.tag {
    background: rgba(0, 229, 255, 0.05);
    color: var(--primary-blue);
    padding: 0.4rem 0.875rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(0, 229, 255, 0.15);
    transition: var(--transition-fast);
}

.tag:hover {
    background: rgba(0, 229, 255, 0.15);
    border-color: var(--primary-blue);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
}

/* ===================================
   关于我们区块
   =================================== */
.about {
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.9;
    font-size: 1.05rem;
}

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

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid rgba(0, 229, 255, 0.1);
    transition: var(--transition-normal);
}

.stat-item:hover {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    max-width: 450px;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-tertiary) 100%);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    border: 1px solid rgba(0, 229, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 229, 255, 0.1), transparent 30%);
    animation: rotate 10s linear infinite;
}

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

.image-placeholder svg {
    width: 100px;
    height: 100px;
    margin-bottom: 1.5rem;
    opacity: 0.6;
    position: relative;
    z-index: 1;
}

.image-placeholder p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-image-img {
    width: 100%;
    max-width: 550px;
    height: auto;
    min-height: 400px;
    border-radius: 20px;
    border: 1px solid rgba(0, 229, 255, 0.1);
    transition: var(--transition-normal);
}

.about-image-img:hover {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: var(--shadow-glow-purple);
    transform: scale(1.02);
}

/* ===================================
   技术优势区块
   =================================== */
.advantages {
    background: var(--bg-primary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

@media (min-width: 992px) {
    .advantages-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.advantage-item {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 229, 255, 0.1);
    transition: var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-cyber);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.advantage-item:hover {
    border-color: rgba(0, 229, 255, 0.3);
    background: var(--bg-card-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.advantage-item:hover::before {
    transform: scaleX(1);
}

.advantage-icon {
    width: 72px;
    height: 72px;
    background: rgba(0, 229, 255, 0.05);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.75rem;
    color: var(--primary-blue);
    border: 2px solid rgba(0, 229, 255, 0.2);
    transition: var(--transition-normal);
}

.advantage-item:hover .advantage-icon {
    background: var(--gradient-blue);
    color: var(--bg-primary);
    transform: scale(1.1);
    box-shadow: var(--neon-blue);
}

.advantage-icon svg {
    width: 36px;
    height: 36px;
}

.advantage-item h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.875rem;
    letter-spacing: -0.5px;
}

.advantage-item p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}

/* ===================================
   联系我们区块 - 地图展示
   =================================== */
.contact {
    background: var(--bg-secondary);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid rgba(0, 229, 255, 0.1);
    transition: var(--transition-normal);
}

.contact-item:hover {
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    flex-shrink: 0;
    box-shadow: var(--neon-blue);
    transition: var(--transition-normal);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(-5deg);
}

.contact-icon svg {
    width: 28px;
    height: 28px;
}

.contact-item h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
}

/* 带二维码的联系项 */
.contact-content-with-qr {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.contact-text {
    flex: 0 0 auto;
}

.wechat-qr {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid rgba(0, 229, 255, 0.2);
    transition: var(--transition-normal);
    flex-shrink: 0;
}

.wechat-qr:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--neon-blue);
    transform: scale(1.05);
}

.qr-code {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
}

/* 地图容器 - 地址定位卡片 */
.map-link-wrapper {
    display: block;
    text-decoration: none;
    width: 100%;
}

.map-container {
    width: 100%;
    min-height: 400px;
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid rgba(0, 229, 255, 0.2);
    box-shadow: var(--shadow-glow-purple);
    position: relative;
    background: var(--bg-card);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.map-container:hover {
    border-color: rgba(0, 229, 255, 0.5);
    box-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
    transform: translateY(-3px);
}

.map-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    padding: 3rem;
    text-align: center;
}

.map-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.map-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.map-info p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.map-action {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--gradient-blue);
    color: var(--bg-primary);
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all var(--transition-normal);
    box-shadow: var(--neon-blue);
}

.map-action svg {
    width: 20px;
    height: 20px;
}

.map-link-wrapper:hover .map-action {
    transform: scale(1.05);
    box-shadow: 0 0 50px rgba(0, 229, 255, 0.7);
}

/* ===================================
   页脚样式
   =================================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid rgba(0, 229, 255, 0.1);
    padding: 4rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-cyber);
    opacity: 0.3;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(0, 229, 255, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 12px;
    transition: var(--transition-normal);
}

.footer-logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
}

.footer-tagline {
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    position: relative;
    padding: 0.5rem 0;
    animation: taglineGlow 3s ease-in-out infinite alternate;
}

.footer-tagline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10px;
    right: -10px;
    height: 1px;
    background: var(--gradient-blue);
    opacity: 0.6;
    animation: lineGlow 2s ease-in-out infinite;
}

.footer-tagline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -10px;
    right: -10px;
    height: 1px;
    background: var(--gradient-blue);
    opacity: 0.6;
    animation: lineGlow 2s ease-in-out infinite;
}

@keyframes taglineGlow {
    from {
        filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.3));
    }
    to {
        filter: drop-shadow(0 0 15px rgba(124, 58, 237, 0.5));
    }
}

@keyframes lineGlow {
    0%, 100% {
        opacity: 0.4;
        transform: scaleX(0.9);
    }
    50% {
        opacity: 0.8;
        transform: scaleX(1);
    }
}

.footer-links {
    display: flex;
    gap: 2.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 1rem;
    font-weight: 600;
    position: relative;
}

.footer-links a::before {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-cyber);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-blue);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.footer-links a:hover::before {
    width: 100%;
}

.footer-bottom {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 0.25rem;
}

.beian-link {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.beian-link:hover {
    color: var(--primary-blue);
    text-decoration: underline;
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

/* ===================================
   响应式设计
   =================================== */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }

    .title-main {
        font-size: 3.5rem;
        letter-spacing: 2px;
    }

    .title-main::before {
        font-size: 0.7rem;
        top: -0.6rem;
        letter-spacing: 0.3rem;
    }

    .title-sub {
        font-size: 1.4rem;
        letter-spacing: 0.3rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .map-container {
        min-height: 350px;
    }

    .map-placeholder {
        min-height: 350px;
        padding: 2rem;
    }

    .map-icon {
        font-size: 4rem;
    }

    .map-info h3 {
        font-size: 1.5rem;
    }

    .map-info p {
        font-size: 1rem;
    }

    .map-action {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .contact-content-with-qr {
        flex-direction: column;
        text-align: center;
    }

    .wechat-qr {
        width: 100px;
        height: 100px;
        margin-top: 0.25rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    /* 导航栏折叠样式 */
    .navbar .container {
        justify-content: space-between;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: rgba(5, 5, 8, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 2rem;
        gap: 0;
        transition: var(--transition-slow);
        border-left: 1px solid rgba(0, 229, 255, 0.2);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 1.5rem;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(0, 229, 255, 0.1);
    }

    .nav-link::before {
        bottom: 0.5rem;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
    }

    .nav-link:hover::before {
        width: 100%;
    }

    /* 移动端软件下载下拉菜单 */
    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown .dropdown-toggle {
        width: 100%;
        text-align: center;
    }

    .dropdown-menu {
        position: static;
        transform: none;
        min-width: 100%;
        opacity: 1;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        border: none;
        background: transparent;
        box-shadow: none;
        transition: all 0.3s ease;
    }

    .nav-dropdown:hover .dropdown-menu,
    .nav-dropdown.open .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: none;
        max-height: 200px;
        padding: 0.5rem 0;
    }

    .dropdown-item {
        text-align: center;
        color: rgba(255, 255, 255, 0.55);
        font-size: 0.95rem;
        padding: 0.9rem;
        background: rgba(0, 229, 255, 0.03);
    }

    .dropdown-item:hover {
        background: rgba(0, 229, 255, 0.08);
    }

    /* 移动端OpenClaw链接样式 */
    .openclaw-link {
        justify-content: center;
        background: linear-gradient(135deg, rgba(255, 77, 77, 0.15) 0%, rgba(153, 27, 27, 0.15) 100%);
        margin-bottom: 1rem;
    }

    .openclaw-icon {
        font-size: 2rem;
    }

    .openclaw-text {
        font-size: 1rem;
    }

    .openclaw-link:hover {
        background: linear-gradient(135deg, rgba(255, 77, 77, 0.25) 0%, rgba(153, 27, 27, 0.25) 100%);
    }

    /* 遮罩层 */
    body.menu-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .hero {
        padding: 11rem 0 5rem;
    }

    .hero-title {
        font-size: 2.5rem;
        gap: 0.3rem;
    }

    .title-main {
        font-size: 2.8rem;
        letter-spacing: 1.5px;
    }

    .title-main::before {
        font-size: 0.6rem;
        top: -0.5rem;
        letter-spacing: 0.2rem;
    }

    .title-sub {
        font-size: 1.1rem;
        letter-spacing: 0.2rem;
    }

    .title-sub::before,
    .title-sub::after {
        width: 20px;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

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

    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    @media (min-width: 992px) {
        .advantages-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .map-container {
        min-height: 300px;
    }

    .map-placeholder {
        min-height: 300px;
        padding: 1.5rem;
    }

    .map-icon {
        font-size: 3.5rem;
        margin-bottom: 1rem;
    }

    .map-info h3 {
        font-size: 1.3rem;
    }

    .map-info p {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }

    .map-action {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
        gap: 0.2rem;
    }

    .title-main {
        font-size: 2.2rem;
        letter-spacing: 1px;
    }

    .title-main::before {
        font-size: 0.5rem;
        top: -0.4rem;
        letter-spacing: 0.15rem;
    }

    .title-sub {
        font-size: 0.95rem;
        letter-spacing: 0.1rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .title-sub::before,
    .title-sub::after {
        width: 40px;
        height: 1px;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .feature-tag {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }
}

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

.animate-in {
    animation: fadeInUp 0.8s ease forwards;
}

/* ===================================
   打印样式
   =================================== */
@media print {
    .navbar,
    .hero-actions,
    section {
        page-break-inside: avoid;
    }
}

/* ===================================
   滚动条样式
   =================================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-cyber);
}

/* ===================================
   辅助功能
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 霓虹发光文字类 */
.neon-text {
    text-shadow: var(--neon-blue);
}

.neon-text-purple {
    text-shadow: var(--neon-purple);
}

/* 玻璃态卡片类 */
.glass-card {
    background: rgba(18, 18, 28, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 229, 255, 0.1);
}