/* ========== 功能中心页面样式 ========== */

/* 页面头部Banner */
.features-banner {
	width: 100%;
	background: linear-gradient(135deg, #1A4A8C 0%, #3E86F9 50%, #5BA3FF 100%);
	padding: 100px 0 80px;
	text-align: center;
	color: #FFFFFF;
	position: relative;
	overflow: hidden;
}

/* Banner背景装饰 - 场景化图形 */
.features-banner::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-image: 
		/* 试卷纹理 */
		repeating-linear-gradient(45deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px),
		/* 书籍轮廓 */
		radial-gradient(ellipse at 15% 30%, rgba(255, 255, 255, 0.08) 0%, transparent 40%),
		radial-gradient(ellipse at 85% 70%, rgba(255, 255, 255, 0.06) 0%, transparent 40%),
		/* 数字代码流 */
		linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.02) 50%, transparent 100%);
	background-size: 100% 100%, 300px 300px, 400px 400px, 200% 100%;
	background-position: 0 0, 10% 20%, 90% 80%, 0 0;
	animation: codeFlow 20s linear infinite;
	pointer-events: none;
}

@keyframes codeFlow {
	0% {
		background-position: 0 0, 10% 20%, 90% 80%, 0 0;
	}
	100% {
		background-position: 0 0, 10% 20%, 90% 80%, -200% 0;
	}
}

.features-banner::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 100%;
	height: 100px;
	background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.05));
	pointer-events: none;
}

/* AI脑图装饰 */
.features-banner-content::before {
	content: '';
	position: absolute;
	top: 20%;
	right: 10%;
	width: 200px;
	height: 200px;
	background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
	border-radius: 50%;
	opacity: 0.6;
	animation: pulse 4s ease-in-out infinite;
	pointer-events: none;
	z-index: 1;
}

.features-banner-content {
	position: relative;
	z-index: 2;
}

/* 品牌标识 */
.brand-badge {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 8px 20px;
	background: rgba(255, 255, 255, 0.15);
	backdrop-filter: blur(10px);
	border-radius: 50px;
	margin-bottom: 30px;
	border: 1px solid rgba(255, 255, 255, 0.2);
	animation: fadeInDown 0.8s ease;
}

.brand-icon {
	font-size: 20px;
}

.brand-text {
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 14px;
	letter-spacing: 1px;
}

.features-banner-content h1 {
	font-family: Source Han Sans CN;
	font-weight: 700;
	font-size: 56px;
	margin-bottom: 24px;
	letter-spacing: -1.5px;
	text-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
	animation: fadeInUp 0.8s ease;
	line-height: 1.3;
}

.features-banner-subtitle {
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 28px;
	margin-bottom: 16px;
	opacity: 0.95;
	letter-spacing: 0.3px;
	animation: fadeInUp 0.8s ease 0.2s both;
}

.features-banner-desc {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 18px;
	opacity: 0.85;
	letter-spacing: 0.2px;
	animation: fadeInUp 0.8s ease 0.4s both;
	max-width: 800px;
	margin: 0 auto;
	line-height: 1.7;
}

/* 数据可视化 */
.features-stats {
	display: flex;
	justify-content: center;
	gap: 60px;
	margin-top: 50px;
	animation: fadeInUp 0.8s ease 0.6s both;
}

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

.features-stat-number {
	font-family: Source Han Sans CN;
	font-weight: 700;
	font-size: 52px;
	line-height: 1;
	margin-bottom: 8px;
	color: #FFFFFF;
	text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.highlight-stat .features-stat-number {
	color: #4ECDC4;
	text-shadow: 0 0 20px rgba(78, 205, 196, 0.5);
}

.features-stat-label {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	opacity: 0.9;
	letter-spacing: 0.5px;
	margin-bottom: 4px;
}

.features-stat-compare {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 12px;
	opacity: 0.8;
	color: #4ECDC4;
	margin-top: 4px;
}

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

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

/* 分类筛选区域 */
.features-filter-section {
	padding: 50px 0;
	background: linear-gradient(180deg, #F8FAFF 0%, #FFFFFF 100%);
	border-bottom: 1px solid rgba(229, 233, 242, 0.5);
	position: relative;
}

.features-filter-section::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(62, 134, 249, 0.2), transparent);
}

.features-filter {
	display: flex;
	justify-content: center;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 20px;
}

.filter-btn {
	padding: 12px 28px;
	background: #FFFFFF;
	border: 2px solid #E5E9F2;
	border-radius: 28px;
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 15px;
	color: #666666;
	cursor: pointer;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	display: flex;
	align-items: center;
	gap: 10px;
	position: relative;
	overflow: hidden;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.filter-btn::before {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 0;
	height: 0;
	background: radial-gradient(circle, rgba(62, 134, 249, 0.1) 0%, transparent 70%);
	border-radius: 50%;
	transform: translate(-50%, -50%);
	transition: width 0.4s ease, height 0.4s ease;
}

.filter-btn:active::before {
	width: 300px;
	height: 300px;
}

.filter-btn i {
	font-size: 15px;
	transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	position: relative;
	z-index: 1;
}

.filter-btn:hover {
	background: #F0F7FF;
	border-color: #3E86F9;
	color: #3E86F9;
	transform: translateY(-2px);
	box-shadow: 0 4px 16px rgba(62, 134, 249, 0.15);
}

.filter-btn:hover i {
	transform: scale(1.1);
}

/* 防作弊监控按钮特殊动效 */
.filter-btn[data-category="anti-cheat"]:hover::after {
	content: '📹';
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	font-size: 20px;
	opacity: 0;
	animation: cameraScan 0.6s ease;
	pointer-events: none;
}

@keyframes cameraScan {
	0% {
		opacity: 0;
		transform: translate(-50%, -50%) scale(0.5);
	}
	50% {
		opacity: 1;
		transform: translate(-50%, -50%) scale(1.2);
	}
	100% {
		opacity: 0;
		transform: translate(-50%, -50%) scale(1);
	}
}

/* AI智能按钮特殊动效 */
.filter-btn[data-category="ai"]:hover::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 60px;
	height: 60px;
	background: radial-gradient(circle, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
	border-radius: 50%;
	transform: translate(-50%, -50%);
	opacity: 0;
	animation: brainPulse 0.8s ease;
	pointer-events: none;
}

@keyframes brainPulse {
	0% {
		opacity: 0;
		transform: translate(-50%, -50%) scale(0);
	}
	50% {
		opacity: 1;
		transform: translate(-50%, -50%) scale(1.5);
	}
	100% {
		opacity: 0;
		transform: translate(-50%, -50%) scale(2);
	}
}

/* 平台对接按钮特殊动效 */
.filter-btn[data-category="platform"]:hover {
	background: linear-gradient(135deg, #F3E5F5 0%, #E1BEE7 100%);
	border-color: #5E35B1;
	color: #5E35B1;
}

.filter-btn[data-category="platform"]:hover::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 60px;
	height: 60px;
	background: radial-gradient(circle, rgba(94, 53, 177, 0.3) 0%, transparent 70%);
	border-radius: 50%;
	transform: translate(-50%, -50%);
	opacity: 0;
	animation: plugConnect 0.8s ease;
	pointer-events: none;
}

@keyframes plugConnect {
	0% {
		opacity: 0;
		transform: translate(-50%, -50%) scale(0);
	}
	50% {
		opacity: 1;
		transform: translate(-50%, -50%) scale(1.5);
	}
	100% {
		opacity: 0;
		transform: translate(-50%, -50%) scale(2);
	}
}

.filter-btn.active {
	background: linear-gradient(135deg, #3E86F9 0%, #75AFFF 100%);
	border-color: transparent;
	color: #FFFFFF;
	box-shadow: 0 6px 20px rgba(62, 134, 249, 0.3);
	transform: translateY(-2px);
}

.filter-btn.active i {
	transform: scale(1.15);
	animation: pulse 2s infinite;
}

@keyframes pulse {
	0%, 100% {
		transform: scale(1.15);
	}
	50% {
		transform: scale(1.25);
	}
}

.features-search {
	position: relative;
	max-width: 450px;
	margin: 0 auto;
}

.features-search input {
	width: 100%;
	padding: 14px 50px 14px 24px;
	background: #FFFFFF;
	border: 2px solid #E5E9F2;
	border-radius: 28px;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 15px;
	color: #333333;
	outline: none;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.features-search input::placeholder {
	color: #999999;
	transition: opacity 0.3s ease;
}

.features-search input:focus {
	border-color: #3E86F9;
	box-shadow: 0 0 0 4px rgba(62, 134, 249, 0.15), 0 4px 16px rgba(62, 134, 249, 0.2);
	transform: translateY(-2px);
}

.features-search input:focus::placeholder {
	opacity: 0.5;
}

.features-search i {
	position: absolute;
	right: 24px;
	top: 50%;
	transform: translateY(-50%);
	color: #999999;
	font-size: 18px;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	pointer-events: none;
}

.features-search input:focus + i {
	color: #3E86F9;
	transform: translateY(-50%) scale(1.1);
}

/* 功能内容区域 */
.features-content {
	padding: 80px 0 120px;
	background: #FFFFFF;
}

.features-category {
	margin-bottom: 100px;
	opacity: 0;
	animation: fadeInUp 0.8s ease forwards;
}

.features-category:nth-child(1) { animation-delay: 0.1s; }
.features-category:nth-child(2) { animation-delay: 0.2s; }
.features-category:nth-child(3) { animation-delay: 0.3s; }
.features-category:nth-child(4) { animation-delay: 0.4s; }
.features-category:nth-child(5) { animation-delay: 0.5s; }
.features-category:nth-child(6) { animation-delay: 0.6s; }
.features-category:nth-child(7) { animation-delay: 0.7s; }
.features-category:nth-child(8) { animation-delay: 0.8s; }
.features-category:nth-child(9) { animation-delay: 0.9s; }

.features-category:last-child {
	margin-bottom: 0;
}

.category-header {
	display: flex;
	align-items: center;
	gap: 24px;
	margin-bottom: 45px;
	padding-bottom: 24px;
	border-bottom: 2px solid rgba(62, 134, 249, 0.1);
	position: relative;
}

.category-header::after {
	content: '';
	position: absolute;
	bottom: -2px;
	left: 0;
	width: 80px;
	height: 2px;
	background: linear-gradient(90deg, #3E86F9 0%, #75AFFF 100%);
	border-radius: 2px;
}

/* 场景化分隔标签 */
.category-scene-tag {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 6px 16px;
	background: rgba(62, 134, 249, 0.08);
	border-radius: 20px;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 13px;
	color: #666666;
	margin-top: 12px;
}

.category-scene-tag::before {
	content: '📋';
	font-size: 14px;
}

.category-icon {
	width: 68px;
	height: 68px;
	border-radius: 16px;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
	position: relative;
	overflow: hidden;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 学习管理 - 蓝色主题 */
.features-category[data-category="learning"] .category-icon {
	background: linear-gradient(135deg, #3E86F9 0%, #75AFFF 100%);
	box-shadow: 0 8px 24px rgba(62, 134, 249, 0.3);
}

.features-category[data-category="learning"] .category-header::after {
	background: linear-gradient(90deg, #3E86F9 0%, #75AFFF 100%);
}

.features-category[data-category="learning"] .feature-card:hover {
	border-color: rgba(62, 134, 249, 0.4);
	box-shadow: 0 20px 60px rgba(62, 134, 249, 0.25), 0 0 0 1px rgba(62, 134, 249, 0.15);
}

.features-category[data-category="learning"] .feature-card:hover::after {
	background: linear-gradient(90deg, #3E86F9 0%, #75AFFF 50%, #9BC5FF 100%);
}

/* 考试系统 - 深蓝色主题 */
.features-category[data-category="exam"] .category-icon {
	background: linear-gradient(135deg, #1E88E5 0%, #42A5F5 100%);
	box-shadow: 0 8px 24px rgba(30, 136, 229, 0.3);
}

.features-category[data-category="exam"] .category-header::after {
	background: linear-gradient(90deg, #1E88E5 0%, #42A5F5 100%);
}

.features-category[data-category="exam"] .feature-card:hover {
	border-color: rgba(30, 136, 229, 0.4);
	box-shadow: 0 20px 60px rgba(30, 136, 229, 0.25), 0 0 0 1px rgba(30, 136, 229, 0.15);
}

.features-category[data-category="exam"] .feature-card:hover::after {
	background: linear-gradient(90deg, #1E88E5 0%, #42A5F5 50%, #64B5F6 100%);
}

.features-category[data-category="exam"] .feature-icon {
	background: linear-gradient(135deg, #1E88E5 0%, #42A5F5 100%);
	box-shadow: 0 8px 24px rgba(30, 136, 229, 0.25);
}

.features-category[data-category="exam"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(30, 136, 229, 0.35);
}

/* 防作弊监控 - 深绿色主题 */
.features-category[data-category="anti-cheat"] .category-icon {
	background: linear-gradient(135deg, #2E7D32 0%, #4CAF50 100%);
	box-shadow: 0 8px 24px rgba(46, 125, 50, 0.3);
}

.features-category[data-category="anti-cheat"] .category-header::after {
	background: linear-gradient(90deg, #2E7D32 0%, #4CAF50 100%);
}

.features-category[data-category="anti-cheat"] .feature-card:hover {
	border-color: rgba(46, 125, 50, 0.4);
	box-shadow: 0 20px 60px rgba(46, 125, 50, 0.25), 0 0 0 1px rgba(46, 125, 50, 0.15);
}

.features-category[data-category="anti-cheat"] .feature-card:hover::after {
	background: linear-gradient(90deg, #2E7D32 0%, #4CAF50 50%, #66BB6A 100%);
}

.features-category[data-category="anti-cheat"] .feature-icon {
	background: linear-gradient(135deg, #2E7D32 0%, #4CAF50 100%);
	box-shadow: 0 8px 24px rgba(46, 125, 50, 0.25);
}

.features-category[data-category="anti-cheat"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(46, 125, 50, 0.35);
}

/* AI智能 - 紫色主题 */
.features-category[data-category="ai"] .category-icon {
	background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
	box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.features-category[data-category="ai"] .category-header::after {
	background: linear-gradient(90deg, #667EEA 0%, #764BA2 100%);
}

.features-category[data-category="ai"] .feature-card:hover {
	border-color: rgba(102, 126, 234, 0.4);
	box-shadow: 0 20px 60px rgba(102, 126, 234, 0.25), 0 0 0 1px rgba(102, 126, 234, 0.15);
}

.features-category[data-category="ai"] .feature-card:hover::after {
	background: linear-gradient(90deg, #667EEA 0%, #764BA2 50%, #9B7BB8 100%);
}

.features-category[data-category="ai"] .feature-icon {
	background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
	box-shadow: 0 8px 24px rgba(102, 126, 234, 0.25);
}

.features-category[data-category="ai"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(102, 126, 234, 0.35);
}

/* 平台对接 - 靛蓝色主题 */
.features-category[data-category="platform"] .category-icon {
	background: linear-gradient(135deg, #5E35B1 0%, #7E57C2 100%);
	box-shadow: 0 8px 24px rgba(94, 53, 177, 0.3);
}

.features-category[data-category="platform"] .category-header::after {
	background: linear-gradient(90deg, #5E35B1 0%, #7E57C2 100%);
}

.features-category[data-category="platform"] .feature-card:hover {
	border-color: rgba(94, 53, 177, 0.4);
	box-shadow: 0 20px 60px rgba(94, 53, 177, 0.25), 0 0 0 1px rgba(94, 53, 177, 0.15);
}

.features-category[data-category="platform"] .feature-card:hover::after {
	background: linear-gradient(90deg, #5E35B1 0%, #7E57C2 50%, #9575CD 100%);
}

.features-category[data-category="platform"] .feature-icon {
	background: linear-gradient(135deg, #5E35B1 0%, #7E57C2 100%);
	box-shadow: 0 8px 24px rgba(94, 53, 177, 0.25);
}

.features-category[data-category="platform"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(94, 53, 177, 0.35);
}

.features-category[data-category="platform"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #5E35B1 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="platform"] .feature-card:hover h3 {
	color: #5E35B1;
}

.features-category[data-category="platform"] .feature-btn {
	color: #5E35B1;
}

.features-category[data-category="platform"] .feature-btn:hover {
	color: #4527A0;
}

/* 系统管理 - 深青色主题 */
.features-category[data-category="system"] .category-icon {
	background: linear-gradient(135deg, #00897B 0%, #26A69A 100%);
	box-shadow: 0 8px 24px rgba(0, 137, 123, 0.3);
}

.features-category[data-category="system"] .category-header::after {
	background: linear-gradient(90deg, #00897B 0%, #26A69A 100%);
}

.features-category[data-category="system"] .feature-card:hover {
	border-color: rgba(0, 137, 123, 0.4);
	box-shadow: 0 20px 60px rgba(0, 137, 123, 0.25), 0 0 0 1px rgba(0, 137, 123, 0.15);
}

.features-category[data-category="system"] .feature-card:hover::after {
	background: linear-gradient(90deg, #00897B 0%, #26A69A 50%, #4DB6AC 100%);
}

.features-category[data-category="system"] .feature-icon {
	background: linear-gradient(135deg, #00897B 0%, #26A69A 100%);
	box-shadow: 0 8px 24px rgba(0, 137, 123, 0.25);
}

.features-category[data-category="system"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(0, 137, 123, 0.35);
}

/* 在线练习 - 橙色主题 */
.features-category[data-category="practice"] .category-icon {
	background: linear-gradient(135deg, #FF9800 0%, #FFB74D 100%);
	box-shadow: 0 8px 24px rgba(255, 152, 0, 0.3);
}

.features-category[data-category="practice"] .category-header::after {
	background: linear-gradient(90deg, #FF9800 0%, #FFB74D 100%);
}

.features-category[data-category="practice"] .feature-card:hover {
	border-color: rgba(255, 152, 0, 0.4);
	box-shadow: 0 20px 60px rgba(255, 152, 0, 0.25), 0 0 0 1px rgba(255, 152, 0, 0.15);
}

.features-category[data-category="practice"] .feature-card:hover::after {
	background: linear-gradient(90deg, #FF9800 0%, #FFB74D 50%, #FFCC80 100%);
}

.features-category[data-category="practice"] .feature-icon {
	background: linear-gradient(135deg, #FF9800 0%, #FFB74D 100%);
	box-shadow: 0 8px 24px rgba(255, 152, 0, 0.25);
}

.features-category[data-category="practice"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(255, 152, 0, 0.35);
}

.features-category[data-category="practice"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #FF9800 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="practice"] .feature-card:hover h3 {
	color: #FF9800;
}

.features-category[data-category="practice"] .feature-btn {
	color: #E65100;
}

.features-category[data-category="practice"] .feature-btn:hover {
	color: #BF360C;
}

/* 移动端 - 青色主题 */
.features-category[data-category="mobile"] .category-icon {
	background: linear-gradient(135deg, #4ECDC4 0%, #6EDCD4 100%);
	box-shadow: 0 8px 24px rgba(78, 205, 196, 0.3);
}

.features-category[data-category="mobile"] .category-header::after {
	background: linear-gradient(90deg, #4ECDC4 0%, #6EDCD4 100%);
}

.features-category[data-category="mobile"] .feature-card:hover {
	border-color: rgba(78, 205, 196, 0.4);
	box-shadow: 0 20px 60px rgba(78, 205, 196, 0.25), 0 0 0 1px rgba(78, 205, 196, 0.15);
}

.features-category[data-category="mobile"] .feature-card:hover::after {
	background: linear-gradient(90deg, #4ECDC4 0%, #6EDCD4 50%, #8EE4DD 100%);
}

.features-category[data-category="mobile"] .feature-icon {
	background: linear-gradient(135deg, #4ECDC4 0%, #6EDCD4 100%);
	box-shadow: 0 8px 24px rgba(78, 205, 196, 0.25);
}

.features-category[data-category="mobile"] .feature-card:hover .feature-icon {
	box-shadow: 0 12px 32px rgba(78, 205, 196, 0.35);
}

.category-icon::before {
	content: '';
	position: absolute;
	top: -50%;
	left: -50%;
	width: 200%;
	height: 200%;
	background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
	animation: shimmer 3s infinite;
}

@keyframes shimmer {
	0%, 100% {
		opacity: 0;
	}
	50% {
		opacity: 1;
	}
}

.category-icon i {
	font-size: 32px;
	color: #FFFFFF;
	position: relative;
	z-index: 1;
}

.category-info h2 {
	font-family: Source Han Sans CN;
	font-weight: 600;
	font-size: 34px;
	color: #1A1A1A;
	margin-bottom: 10px;
	letter-spacing: -0.5px;
	position: relative;
}

/* 不同分类的标题渐变 */
.features-category[data-category="learning"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #3E86F9 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="exam"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #1E88E5 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="anti-cheat"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #2E7D32 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="ai"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #667EEA 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="system"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #F093FB 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.features-category[data-category="mobile"] .category-info h2 {
	background: linear-gradient(135deg, #1A1A1A 0%, #4ECDC4 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.category-info p {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 17px;
	color: #666666;
	letter-spacing: 0.3px;
}

/* 功能网格 - 灵活布局 */
.features-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 28px;
}

/* 核心功能破格突出 - 在线考试系统 */
@media (min-width: 1024px) {
	.features-category[data-category="exam"] .feature-card[data-feature="exam"] {
		grid-column: span 2;
		display: grid;
		grid-template-columns: 1fr 1fr;
		/* gap: 32px; */
		align-items: center;
		padding: 40px;
	}

	.features-category[data-category="exam"] .feature-card[data-feature="exam"] .feature-card-header {
		/* grid-column: 1 / -1; */
	}

	.features-category[data-category="exam"] .feature-card[data-feature="exam"] h3 {
		font-size: 28px;
		margin-bottom: 16px;
	}

	.features-category[data-category="exam"] .feature-card[data-feature="exam"] p {
		font-size: 17px;
		min-height: auto;
		line-height: 1.8;
	}

	.features-category[data-category="exam"] .feature-card[data-feature="exam"] .feature-highlights {
		grid-column: 1;
	}

	.features-category[data-category="exam"] .feature-card[data-feature="exam"] .feature-btn {
		grid-column: 1;
		justify-self: center;
	}

	/* AI智能出题破格突出 */
	.features-category[data-category="ai"] .feature-card[data-feature="ai-question"] {
		grid-column: span 2;
		display: grid;
		grid-template-columns: 1fr 1fr;
		gap: 2px;
		align-items: center;
		padding: 40px;
	}

	.features-category[data-category="ai"] .feature-card[data-feature="ai-question"] .feature-card-header {
		display: flex;
		flex-direction: row;
		justify-content: space-between;
		align-items: flex-start;
		/* grid-column: 1 / -1; */
	}

	.features-category[data-category="ai"] .feature-card[data-feature="ai-question"] h3 {
		font-size: 28px;
		margin-bottom: 16px;
	}

	.features-category[data-category="ai"] .feature-card[data-feature="ai-question"] p {
		font-size: 17px;
		min-height: auto;
		line-height: 1.8;
	}
}

/* AI智能分类保持统一布局 */
.features-category[data-category="ai"] .features-grid {
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 28px;
}


/* 功能卡片 */
.feature-card {
	display: flex;
	flex-direction: column;
	align-items: stretch;
	background: #FFFFFF;
	border: 1px solid rgba(62, 134, 249, 0.08);
	border-radius: 20px;
	padding: 28px;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	cursor: pointer;
	position: relative;
	overflow: hidden;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* 卡片背景装饰 */
.feature-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: linear-gradient(135deg, rgba(62, 134, 249, 0.02) 0%, rgba(117, 175, 255, 0.02) 100%);
	opacity: 0;
	transition: opacity 0.4s ease;
	z-index: 0;
}

/* 顶部装饰条 - 使用::after */
.feature-card::after {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 4px;
	background: linear-gradient(90deg, #3E86F9 0%, #75AFFF 50%, #9BC5FF 100%);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	z-index: 2;
}

.feature-card:hover {
	transform: translateY(-6px);
	box-shadow: 0 12px 40px rgba(62, 134, 249, 0.15), 0 0 0 1px rgba(62, 134, 249, 0.1);
	border-color: rgba(62, 134, 249, 0.2);
	position: relative;
}

/* hover时顶部装饰条展开 */
.feature-card:hover::after {
	transform: scaleX(1);
	height: 4px;
}

/* 背景效果 - 使用::before，降低透明度 */
.feature-card:hover::before {
	opacity: 0.4;
	background: linear-gradient(135deg, rgba(62, 134, 249, 0.015) 0%, rgba(117, 175, 255, 0.015) 100%);
}

/* 卡片内容层级 */
.feature-card > * {
	position: relative;
	z-index: 2;
}

/* 图标与标题同一行：图标在左，标题在右，标签（如热门）在行末；第一行固定高度保证垂直居中 */
.feature-card {
	display: grid;
	grid-template-columns: auto 1fr auto;
	grid-template-rows: 34px auto auto auto;
	gap: 0;
	align-items: start;
}

.feature-card-header {
	display: contents;
}

.feature-card-header .feature-icon {
	grid-column: 1;
	grid-row: 1;
	align-self: center;
}

.feature-card-header .feature-tags {
	grid-column: 3;
	grid-row: 1;
	align-self: center;
	justify-self: end;
}

.feature-card h3 {
	grid-column: 2;
	grid-row: 1;
	align-self: center;
	margin-bottom: 0;
	margin-left: 12px;
	margin-right: 8px;
	/* 行高与图标同高(34px)，图标与文字垂直居中对齐 */
	line-height: 34px;
}

.feature-card p {
	grid-column: 1 / -1;
	grid-row: 2;
	margin-top: 12px;
}

.feature-card .feature-highlights {
	grid-column: 1 / -1;
	grid-row: 3;
}

.feature-card .feature-btn {
	grid-column: 1 / -1;
	grid-row: 4;
}

.feature-icon {
	width: 34px;
	height: 34px;
	background: #3E86F9;
	border-radius: 9px;
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 3px 12px rgba(62, 134, 249, 0.18);
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	position: relative;
	overflow: hidden;
	flex-shrink: 0;
}

/* 品牌色点缀 - 部分图标使用绿色 */
.feature-card:nth-child(3n) .feature-icon {
	background: #4ECDC4;
	box-shadow: 0 4px 16px rgba(78, 205, 196, 0.2);
}

.feature-card:nth-child(3n) .feature-icon i {
	color: #FFFFFF;
}

/* 学习管理分类的图标保持蓝色 */
.features-category[data-category="learning"] .feature-icon {
	background: linear-gradient(135deg, #3E86F9 0%, #75AFFF 100%);
	box-shadow: 0 8px 24px rgba(62, 134, 249, 0.25);
}

.feature-icon::before {
	content: '';
	position: absolute;
	top: -50%;
	left: -50%;
	width: 200%;
	height: 200%;
	background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
	opacity: 0;
	transition: opacity 0.4s ease;
}

.feature-card:hover .feature-icon {
	transform: scale(1.05) rotate(2deg);
	box-shadow: 0 8px 24px rgba(62, 134, 249, 0.3);
}

.feature-card:hover .feature-icon::before {
	opacity: 1;
}

.feature-icon i {
	font-size: 16px;
	color: #FFFFFF;
	position: relative;
	z-index: 1;
	transition: transform 0.4s ease;
}

.feature-card:hover .feature-icon i {
	transform: scale(1.05);
}

.feature-tags {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}

.tag {
	padding: 4px 10px;
	border-radius: 8px;
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 11px;
	line-height: 1.3;
	transition: all 0.3s ease;
	position: relative;
	overflow: hidden;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	white-space: nowrap;
	border: 1px solid transparent;
}

/* 移除标签的shimmer动效，简化样式 */

.tag-hot {
	background: #FFF3E0;
	color: #E65100;
	border-color: rgba(230, 81, 0, 0.3);
}

.tag-ai {
	background: #F3E5F5;
	color: #7B1FA2;
	border-color: rgba(123, 31, 162, 0.3);
}

.tag-new {
	background: #FFEBEE;
	color: #C62828;
	border-color: rgba(198, 40, 40, 0.3);
}

.tag-mobile {
	background: #E3F2FD;
	color: #1976D2;
	border-color: rgba(25, 118, 210, 0.3);
}

.feature-card h3 {
	font-family: Source Han Sans CN;
	font-weight: 700;
	font-size: 22px;
	color: #1A1A1A;
	margin-bottom:2px;
	line-height: 34px;
	letter-spacing: -0.5px;
	transition: color 0.4s ease;
}

/* hover时标题颜色变深 */
.feature-card:hover h3 {
	color: #000000;
}

/* 不同分类的标题悬停颜色 */
.features-category[data-category="learning"] .feature-card:hover h3 {
	color: #3E86F9;
}

.features-category[data-category="exam"] .feature-card:hover h3 {
	color: #1E88E5;
}

.features-category[data-category="anti-cheat"] .feature-card:hover h3 {
	color: #2E7D32;
}

.features-category[data-category="ai"] .feature-card:hover h3 {
	color: #667EEA;
}

.features-category[data-category="system"] .feature-card:hover h3 {
	color: #00897B;
}

.features-category[data-category="mobile"] .feature-card:hover h3 {
	color: #4ECDC4;
}

.feature-card p {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 15px;
	color: #555555;
	line-height: 1.7;
	margin-bottom: 18px;
	min-height: auto;
	letter-spacing: 0.2px;
	transition: color 0.4s ease;
}

/* hover时文字颜色变深，提高可读性 */
.feature-card:hover p {
	color: #333333;
	font-weight: 500;
}

.feature-highlights {
	display: flex;
	flex-wrap: wrap;
	gap: 6px 8px;
	margin-bottom: 18px;
}

/* 在线考试系统卡片：优化布局，减少空白（恢复 header 为常规块，保持图标+标签一行） */
.feature-card[data-feature="exam"] {
	display: flex;
	flex-direction: column;
}

.feature-card[data-feature="exam"] .feature-card-header {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: flex-start;
	margin-bottom: 10px;
}

.feature-card[data-feature="exam"] .feature-card-header .feature-icon,
.feature-card[data-feature="exam"] .feature-card-header .feature-tags {
	position: relative;
}

.feature-card[data-feature="exam"] h3 {
	margin-left: 0;
	margin-right: 0;
}

.feature-card[data-feature="exam"] h3 {
	margin-bottom: 8px;
}

.feature-card[data-feature="exam"] p {
	margin-bottom: 14px;
	line-height: 1.6;
}

/* 在线考试系统卡片：标签使用3列布局，6个标签正好2行 */
.feature-card[data-feature="exam"] .feature-highlights {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 8px;
	margin-bottom: 14px;
}

/* 在线考试系统卡片的标签：与全局标签风格一致 */
.feature-card[data-feature="exam"] .feature-highlights span {
	padding: 4px 10px;
	font-size: 12px;
	text-align: center;
	white-space: nowrap;
}

/* 移动端调整为2列 */
@media (max-width: 768px) {
	.feature-card[data-feature="exam"] .feature-highlights {
		grid-template-columns: repeat(2, 1fr);
	}
}

.feature-highlights span {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 3px 8px;
	background: rgba(248, 250, 255, 0.6);
	border: none;
	border-radius: 6px;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 12px;
	color: #666666;
	transition: color 0.25s ease, background 0.25s ease;
	position: relative;
	pointer-events: none;
}

/* hover 时标签仅做轻微高亮，不强调为按钮 */
.feature-card:hover .feature-highlights span {
	color: #444444;
}

.feature-highlights span::before {
	display: none;
}

.feature-highlights span:hover {
	background: rgba(248, 250, 255, 0.9);
}

.feature-highlights span i {
	font-size: 10px;
	color: rgba(62, 134, 249, 0.75);
	font-weight: 600;
}

/* 了解详情：文字链接样式，不做成按钮 */
.feature-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 5px;
	padding: 0;
	align-self: center;
	background: none;
	border: none;
	border-radius: 0;
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 13px;
	color: #3E86F9;
	transition: color 0.25s ease;
	text-decoration: none;
	box-shadow: none;
}

.feature-btn:hover {
	color: #2563eb;
	text-decoration: underline;
}

.feature-btn i {
	font-size: 10px;
	transition: transform 0.25s ease;
}

.feature-btn:hover i {
	transform: translateX(3px);
}

/* 功能详情弹窗 */
.feature-modal {
	display: none;
	position: fixed;
	z-index: 10000;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, 0.6);
	backdrop-filter: blur(5px);
	overflow-y: auto;
	animation: fadeIn 0.3s ease;
}

.feature-modal.show {
	display: block;
}

@keyframes fadeIn {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

.feature-modal-content {
	position: relative;
	background: #FFFFFF;
	margin: 40px auto;
	max-width: 900px;
	border-radius: 16px;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
	animation: slideUp 0.3s ease;
	overflow: hidden;
}

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

.feature-modal-close {
	position: absolute;
	right: 20px;
	top: 20px;
	width: 36px;
	height: 36px;
	background: #F5F5F5;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 24px;
	color: #666666;
	cursor: pointer;
	z-index: 10;
	transition: all 0.3s ease;
}

.feature-modal-close:hover {
	background: #E5E9F2;
	color: #333333;
	transform: rotate(90deg);
}

.feature-modal-body {
	padding: 50px 40px;
	max-height: 80vh;
	overflow-y: auto;
}

.feature-detail-header {
	margin-bottom: 30px;
	padding-bottom: 20px;
	border-bottom: 2px solid #F0F7FF;
}

.feature-detail-header h2 {
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 32px;
	color: #333333;
	margin-bottom: 12px;
}

.feature-detail-header .subtitle {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 18px;
	color: #666666;
}

.feature-detail-highlights {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 16px;
	margin: 30px 0;
}

.feature-detail-highlight {
	padding: 20px;
	background: #F8FAFF;
	border-radius: 12px;
	border-left: 4px solid #3E86F9;
}

.feature-detail-highlight h4 {
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 16px;
	color: #333333;
	margin-bottom: 8px;
}

.feature-detail-highlight p {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 14px;
	color: #666666;
	line-height: 1.6;
}

.feature-detail-list {
	margin: 30px 0;
}

.feature-detail-list h3 {
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 20px;
	color: #333333;
	margin-bottom: 20px;
}

.feature-detail-item {
	display: flex;
	align-items: flex-start;
	gap: 16px;
	padding: 16px;
	background: #F8FAFF;
	border-radius: 12px;
	margin-bottom: 12px;
}

.feature-detail-item i {
	font-size: 20px;
	color: #3E86F9;
	margin-top: 2px;
	flex-shrink: 0;
}

.feature-detail-item-content h4 {
	font-family: Source Han Sans CN;
	font-weight: 500;
	font-size: 16px;
	color: #333333;
	margin-bottom: 6px;
}

.feature-detail-item-content p {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 14px;
	color: #666666;
	line-height: 1.6;
}

.feature-detail-cta {
	margin-top: 40px;
	padding-top: 30px;
	border-top: 2px solid #F0F7FF;
	display: flex;
	gap: 16px;
	justify-content: center;
}

.feature-detail-cta .btn-primary,
.feature-detail-cta .btn-secondary {
	padding: 14px 32px;
	border-radius: 8px;
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	cursor: pointer;
	transition: all 0.3s ease;
	text-decoration: none;
	display: inline-block;
}

.feature-detail-cta .btn-primary {
	background: linear-gradient(90deg, #3E86F9 0%, #75AFFF 100%);
	color: #FFFFFF;
}

.feature-detail-cta .btn-primary:hover {
	background: linear-gradient(90deg, #397ee6 0%, #69a0e6 100%);
	transform: translateY(-2px);
	box-shadow: 0 8px 20px rgba(62, 134, 249, 0.3);
}

.feature-detail-cta .btn-secondary {
	background: #FFFFFF;
	border: 1px solid #3E86F9;
	color: #3E86F9;
}

.feature-detail-cta .btn-secondary:hover {
	background: #F0F7FF;
	transform: translateY(-2px);
}

/* 隐藏分类 */
.features-category.hidden {
	display: none;
}

/* 隐藏卡片 */
.feature-card.hidden {
	display: none;
}

/* 卡片进入动画 */
@keyframes cardFadeIn {
	from {
		opacity: 0;
		transform: translateY(20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.feature-card {
	animation: cardFadeIn 0.6s ease forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.15s; }
.feature-card:nth-child(3) { animation-delay: 0.2s; }
.feature-card:nth-child(4) { animation-delay: 0.25s; }
.feature-card:nth-child(5) { animation-delay: 0.3s; }
.feature-card:nth-child(6) { animation-delay: 0.35s; }

/* 品牌故事 */
.brand-story {
	padding: 100px 0;
	background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFF 100%);
	text-align: center;
}

.brand-story-content {
	max-width: 800px;
	margin: 0 auto;
}

.brand-story-icon {
	font-size: 48px;
	margin-bottom: 24px;
	animation: float 3s ease-in-out infinite;
}

@keyframes float {
	0%, 100% {
		transform: translateY(0);
	}
	50% {
		transform: translateY(-10px);
	}
}

.brand-story h2 {
	font-family: Source Han Sans CN;
	font-weight: 700;
	font-size: 36px;
	color: #1A1A1A;
	margin-bottom: 20px;
	letter-spacing: -0.5px;
}

.brand-story-desc {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 18px;
	color: #666666;
	line-height: 1.8;
	margin-bottom: 16px;
	letter-spacing: 0.3px;
}

.brand-story-vision {
	font-family: Source Han Sans CN;
	font-weight: 600;
	font-size: 20px;
	color: #3E86F9;
	margin-bottom: 50px;
	letter-spacing: 0.5px;
}

.brand-story-stats {
	display: flex;
	justify-content: center;
	gap: 60px;
	margin-top: 50px;
}

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

.brand-stat-number {
	font-family: Source Han Sans CN;
	font-weight: 700;
	font-size: 42px;
	color: #3E86F9;
	margin-bottom: 8px;
	line-height: 1;
}

.brand-stat-label {
	font-family: Source Han Sans CN;
	font-weight: 400;
	font-size: 16px;
	color: #666666;
}

/* 响应式设计 */
@media (max-width: 768px) {
	.features-banner {
		padding: 60px 0 50px;
	}

	.features-banner-content h1 {
		font-size: 32px;
	}

	.features-banner-subtitle {
		font-size: 18px;
	}

	.features-banner-desc {
		font-size: 14px;
	}

	.features-stats {
		flex-direction: column;
		gap: 30px;
		margin-top: 40px;
	}

	.features-stat-number {
		font-size: 40px;
	}

	.features-stat-label {
		font-size: 14px;
	}

	.brand-story {
		padding: 60px 0;
	}

	.brand-story h2 {
		font-size: 28px;
	}

	.brand-story-desc {
		font-size: 16px;
	}

	.brand-story-vision {
		font-size: 18px;
	}

	.brand-story-stats {
		flex-direction: column;
		gap: 30px;
	}

	.brand-stat-number {
		font-size: 36px;
	}

	.features-filter {
		gap: 8px;
	}

	.filter-btn {
		padding: 8px 16px;
		font-size: 12px;
	}

	.features-grid {
		grid-template-columns: 1fr;
		gap: 20px;
	}

	.feature-card {
		padding: 24px;
		border-radius: 16px;
	}

	.feature-icon {
		width: 56px;
		height: 56px;
	}

	.feature-icon i {
		font-size: 24px;
	}

	.feature-card h3 {
		font-size: 20px;
	}

	.feature-card p {
		font-size: 14px;
	}

	.category-info h2 {
		font-size: 26px;
	}

	.category-icon {
		width: 56px;
		height: 56px;
	}

	.category-icon i {
		font-size: 28px;
	}

	.feature-modal-content {
		margin: 20px;
		max-width: calc(100% - 40px);
	}

	.feature-modal-body {
		padding: 30px 20px;
	}

	.feature-detail-header h2 {
		font-size: 24px;
	}

	.feature-detail-cta {
		flex-direction: column;
	}

	.feature-detail-cta .btn-primary,
	.feature-detail-cta .btn-secondary {
		width: 100%;
		text-align: center;
	}
}