/* Main Styles */
:root {
    /* Colors */
    --primary-color: #1976d2;
    --primary-dark: #1565c0;
    --primary-light: #42a5f5;
    --secondary-color: #4caf50;
    --accent-color: #ff9800;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --background-primary: #ffffff;
    --background-secondary: #f8fafc;
    --background-dark: #1a1a1a;
    --border-color: #e5e7eb;
    --shadow-light: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Ripple effect for buttons */
.btn-primary, .btn-secondary, .btn-demo {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-medium);
}

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

.scroll-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Animation classes */
.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

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

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-light);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
}

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

.btn-demo {
    background: var(--secondary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
}

.btn-demo:hover {
    background: #00b894;
    transform: translateY(-1px);
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: all var(--transition-normal);
    width: 100%;
}

.btn-submit:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
}

/* Breadcrumb */
.breadcrumb { position: fixed; top: 72px; left: 0; right: 0; background: var(--background-primary); border-bottom: 1px solid var(--border-color); z-index: 998; }
.breadcrumb .container { display: flex; align-items: center; gap: 8px; padding: 10px var(--spacing-lg); }
.breadcrumb a { color: var(--text-secondary); font-size: var(--font-size-sm); }
.breadcrumb a:hover { color: var(--primary-color); }
.breadcrumb .current { color: var(--text-primary); font-weight: 600; }
.breadcrumb .sep { color: #c0c4cc; }

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar {
    padding: var(--spacing-md) 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 40px;
    height: 40px;
}

.brand-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-link {
    font-weight: 500;
    color: var(--text-primary);
    transition: color var(--transition-normal);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    width: 40px;
    height: 40px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
    transform-origin: center;
}

/* Hero Section */
.hero {
    padding: 120px 0 var(--spacing-3xl);
    background: linear-gradient(135deg, #f8fafc 0%, #e3f2fd 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    letter-spacing: -0.02em;
    word-spacing: 0.1em;
}

.highlight {
    color: var(--primary-color);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-light));
    opacity: 0.3;
    z-index: -1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-visual {
    position: relative;
    height: 500px;
}

/* 新视觉：极简丝滑的“玻璃卡片 + 发光球体” */
.hero-showcase { position: absolute; inset: 0; border-radius: var(--radius-xl); overflow: hidden; background:
    radial-gradient(120% 100% at 80% 20%, rgba(25,118,210,0.12) 0%, rgba(66,165,245,0.06) 40%, rgba(255,255,255,0.0) 70%);
}

.glass-card {
    position: absolute;
    right: 24px;
    top: 24px;
    left: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    background: rgba(255,255,255,0.55);
    border: 1px solid rgba(25,118,210,0.15);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(25,118,210,0.12), inset 0 1px 0 rgba(255,255,255,0.4);
    backdrop-filter: blur(10px);
}

.card-head { display: flex; gap: 8px; padding: 14px 16px; border-bottom: 1px solid rgba(0,0,0,0.05); }
.card-head .dot { width: 10px; height: 10px; border-radius: 50%; background: #e0e7ff; box-shadow: inset 0 0 0 2px rgba(25,118,210,0.15); }

.card-body { flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 28px; padding: 24px; }
.metrics { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; align-items: end; }
.metric { text-align: center; background: rgba(255,255,255,0.7); border: 1px solid rgba(25,118,210,0.12); border-radius: 16px; padding: 18px 12px; box-shadow: var(--shadow-light); }
.metric-value { font-size: 28px; font-weight: 700; line-height: 1; letter-spacing: -0.02em; color: var(--text-primary); }
.metric-label { margin-top: 8px; color: var(--text-secondary); font-size: 12px; }
.gradient-text { background: linear-gradient(90deg, var(--primary-color), var(--secondary-color)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.trust { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip { padding: 6px 12px; border-radius: 999px; border: 1px solid rgba(25,118,210,0.2); background: rgba(255,255,255,0.7); color: var(--text-secondary); font-size: 12px; }

/* 背景发光球体与装饰环，轻微、丝滑，不跟随滚动 */
.orb { position: absolute; filter: blur(16px); opacity: 0.5; border-radius: 50%; will-change: transform; }
.orb-1 { width: 220px; height: 220px; left: -40px; top: -40px; background: radial-gradient(circle at 30% 30%, rgba(66,165,245,0.8), rgba(25,118,210,0)); }
.orb-2 { width: 260px; height: 260px; right: -60px; bottom: -60px; background: radial-gradient(circle at 70% 70%, rgba(76,175,80,0.7), rgba(25,118,210,0)); }

@keyframes orbFloat { 0%,100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-10px) scale(1.02); } }

.accent-ring { position: absolute; inset: 10%; border-radius: 24px; pointer-events: none; }
.accent-ring::before { content: ''; position: absolute; inset: 0; border-radius: 24px; padding: 1px; background: linear-gradient(135deg, rgba(25,118,210,0.35), rgba(76,175,80,0.25)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--background-primary);
}

/* Guide Article List */
.article-list { display: flex; flex-direction: column; gap: 24px; }
.article-item { display: grid; grid-template-columns: 1fr 360px; gap: 24px; align-items: center; padding: 20px; border: 1px solid var(--border-color); border-radius: var(--radius-xl); background: var(--background-primary); box-shadow: var(--shadow-light); transition: box-shadow var(--transition-normal), transform var(--transition-normal); }
.article-item:hover { box-shadow: var(--shadow-medium); transform: translateY(-4px); }
.article-main { display: flex; flex-direction: column; gap: 10px; }
.article-title { font-size: var(--font-size-2xl); font-weight: 600; color: var(--text-primary); }
.article-meta { color: var(--text-light); font-size: var(--font-size-sm); display:flex; gap:12px; }
.article-desc { color: var(--text-secondary); line-height: 1.8; }
.article-tags { display:flex; gap:8px; margin-top: 4px; }
.article-tags span { padding: 2px 8px; border:1px solid var(--border-color); border-radius: 999px; font-size: var(--font-size-xs); color: var(--text-secondary); }
.article-thumb img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius-lg); }
@media (max-width: 900px) { .article-item { grid-template-columns: 1fr; } .article-thumb img{ height: 180px; } }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
    align-items: stretch;
}

.feature-card {
    background: var(--background-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    text-align: center;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    stroke: white;
    stroke-width: 2;
    fill: none;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.feature-cta { margin-top: auto; padding-top: var(--spacing-lg); }

/* Solutions Section */
.solutions {
    padding: var(--spacing-3xl) 0;
    background: var(--background-secondary);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.solution-item {
    background: var(--background-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

.solution-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

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

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.solution-item:hover .solution-image img {
    transform: scale(1.1);
}

.solution-content {
    padding: var(--spacing-xl);
}

.solution-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.solution-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.solution-link {
    color: var(--primary-color);
    font-weight: 500;
    transition: color var(--transition-normal);
}

.solution-link:hover {
    color: var(--primary-dark);
}

/* About Section */
.about {
    padding: var(--spacing-3xl) 0;
    background: var(--background-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text h2 {
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
}

.stats {
    display: flex;
    gap: var(--spacing-2xl);
}

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

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-medium);
}

/* Contact Section */
.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--background-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

/* 新版联系布局 */
.contact-content.contact-new {
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
}
.contact-qr { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--spacing-2xl); }
.qr-card { background: var(--background-primary); border: 1px solid var(--border-color); border-radius: var(--radius-xl); padding: var(--spacing-xl); text-align: center; box-shadow: var(--shadow-light); }
.qr-card { position: relative; padding-bottom: calc(var(--spacing-xl) + 28px); }
.qr-card img, .qr-img { width: 260px; height: 260px; object-fit: cover; }
.qr-card img { border-radius: var(--radius-md); }
.qr-caption { position: absolute; bottom: var(--spacing-md); left: 0; right: 0; text-align: center; color: var(--text-secondary); }

.contact-brief ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--spacing-lg); }
.contact-brief li { color: var(--text-primary); font-size: var(--font-size-base); background: var(--background-primary); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: var(--spacing-md) var(--spacing-lg); box-shadow: var(--shadow-light); }
.contact-brief a { color: var(--primary-color); }

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.contact-form {
    background: var(--background-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-light);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

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

/* Footer */
.footer {
    background: var(--background-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand p {
    color: #cccccc;
    margin-top: var(--spacing-md);
}

.footer-logo {
    width: 40px;
    height: 40px;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.link-group h4 {
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.link-group ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.link-group a {
    color: #cccccc;
    transition: color var(--transition-normal);
}

.link-group a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding-top: var(--spacing-xl);
    border-top: 1px solid #333;
    text-align: center;
}

.footer-bottom p, .footer-bottom a {
    color: #999999;
}

.footer-bottom a:hover { color: var(--secondary-color); }

/* 公安备案样式 */
.footer-bottom .police-beian { display: flex; gap: 18px; align-items: center; justify-content: center; flex-wrap: wrap; line-height: 1.8; }
.footer-bottom .beian-link { display: inline-flex; align-items: center; gap: 6px; color: #999999; }
.footer-bottom .beian-link:hover { color: var(--secondary-color); }
.footer-bottom .beian-icon { width: 20px; height: 20px; flex: 0 0 auto; }