/* Global Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Navigation */
#mobile-menu {
    transition: max-height 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

/* Backgrounds */
.bg-grid {
    background-size: 40px 40px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
}

.bg-grid-pattern {
    background-image: radial-gradient(#CBD5E1 1px, transparent 1px);
    background-size: 32px 32px;
}

/* Typography */
.text-gradient {
    background: linear-gradient(135deg, #0F52BA 0%, #1e40af 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Home Page: Mega Tabs */
/* Home Page: Mega Tabs */
.bg-tab-gray {
    background-color: #F1F5F9;
    /* Slate-100 - Darker than before */
    border: 1px solid #E2E8F0;
    /* Slate-200 Border */
    border-bottom: 2px solid #E2E8F0;
    /* Thicker bottom for 3D feel */
}

.mega-tab {
    transition: all 0.2s ease-out;
    position: relative;
    margin-right: -1px;
    /* Collapse borders */
}

.mega-tab h3 {
    transition: color 0.3s;
    font-size: 1.25rem;
    /* Ensure readable size */
}

.mega-tab.active {
    background-color: white;
    border: 1px solid #0F52BA;
    /* Blue Line Border */
    border-top: 4px solid #0F52BA;
    /* Thick Top */
    border-bottom: 1px solid white;
    /* Hide bottom border to merge with content */
    margin-bottom: -1px;
    /* Overlap container border */
    z-index: 20;
    box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.05);
    /* Subtle lift */
}

/* Active Top Border - REMOVE pseudo, use border-top directly */
.mega-tab.active::before {
    display: none;
}

.mega-tab:hover:not(.active) {
    background-color: #E2E8F0;
    /* Slate-200 Hover */
    border-color: #CBD5E1;
}

.mega-tab:hover:not(.active) h3 {
    color: #0F52BA;
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-out forwards;
}

.tab-content.active {
    display: block;
}

/* Icons */
.icon-box-filled {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background-color: #0F52BA;
    color: white;
    border-radius: 2px;
    margin-right: 8px;
}

.icon-box-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: #0F52BA;
    margin-right: 8px;
}

/* Markdown Styles */
.markdown-body ul {
    list-style-type: disc;
    padding-left: 1.5em;
    margin-bottom: 1em;
}

.markdown-body ol {
    list-style-type: decimal;
    padding-left: 1.5em;
    margin-bottom: 1em;
}

.markdown-body p {
    margin-bottom: 0.8em;
}

.markdown-body strong {
    color: #60a5fa;
    font-weight: 600;
}

.markdown-body h3 {
    font-size: 1.1em;
    font-weight: bold;
    margin-top: 1em;
    margin-bottom: 0.5em;
    color: white;
}

/* Product Cards */
.product-card {
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -5px rgba(15, 82, 186, 0.15), 0 8px 10px -6px rgba(15, 82, 186, 0.1);
    border-color: #BFDBFE;
}

/* Category Buttons */
.category-btn {
    transition: all 0.2s;
}

.category-btn.active {
    background-color: #0F52BA;
    color: white;
    font-weight: 600;
}

.category-btn:hover:not(.active) {
    background-color: #F1F5F9;
    color: #0F52BA;
}

/* Solution Cards */
.solution-card {
    transition: all 0.3s;
    border: 1px solid #E5E7EB;
}

.solution-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
    border-color: #BFDBFE;
}

/* News Cards */
.news-card {
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

/* Tags */
.tag-item {
    transition: all 0.2s;
}

.tag-item:hover {
    background-color: #0F52BA;
    color: white;
    border-color: #0F52BA;
}

/* Utilities */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-8px);
}

.view-more-btn {
    border: 1px solid #D1D5DB;
    color: #4B5563;
    padding: 6px 20px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
}

.view-more-btn:hover {
    border-color: #0F52BA;
    color: #0F52BA;
    background-color: #EFF6FF;
}

/* Filter Items (Solutions Page) */
.filter-item {
    cursor: pointer;
    transition: all 0.2s;
}

.filter-item:hover {
    color: #0F52BA;
}

.filter-item.active {
    color: #0F52BA;
    font-weight: 700;
}

.filter-checkbox {
    accent-color: #0F52BA;
}

/* Background Grid Pattern from 首页.html */
.bg-grid {
    background-size: 40px 40px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
}

/* Flip Cards */
.perspective-1000 {
    perspective: 1000px;
}

.transform-style-3d {
    transform-style: preserve-3d;
}

.backface-hidden {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.rotate-y-180 {
    transform: rotateY(180deg);
}

.group:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
}