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

html, body {
	width: 100%;
	min-height: 100vh;
	font-family: 'Microsoft YaHei', 'PingFang SC', Arial, sans-serif;
	background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.wrapper {
	width: 100%;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	padding: 40px 20px;
}

.header {
	text-align: center;
	margin-bottom: 40px;
	animation: fadeInDown 0.8s ease-out;
}

.header h1 {
	font-size: 36px;
	font-weight: 600;
	color: #ffffff;
	margin-bottom: 15px;
	text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header p {
	font-size: 16px;
	color: rgba(255, 255, 255, 0.7);
}

.showcase-container {
	width: 100%;
	max-width: 1200px;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 30px;
}

.showcase-item {
	background: rgba(255, 255, 255, 0.05);
	backdrop-filter: blur(10px);
	border-radius: 20px;
	padding: 25px;
	border: 1px solid rgba(255, 255, 255, 0.1);
	box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
	animation: fadeInUp 0.8s ease-out;
	animation-fill-mode: both;
}

.showcase-item:nth-child(1) { animation-delay: 0.1s; }
.showcase-item:nth-child(2) { animation-delay: 0.2s; }
.showcase-item:nth-child(3) { animation-delay: 0.3s; }
.showcase-item:nth-child(4) { animation-delay: 0.4s; }

.showcase-item h3 {
	color: #fff;
	font-size: 18px;
	font-weight: 500;
	margin-bottom: 15px;
	text-align: center;
}

.showcase-item .description {
	color: rgba(255, 255, 255, 0.6);
	font-size: 13px;
	text-align: center;
	margin-bottom: 20px;
}

/* 角度视图样式 */
.angle-view {
	overflow: hidden;
	width: 100%;
	max-width: 400px;
	margin: 0 auto;
	border: 3px solid rgba(255, 255, 255, 0.2);
	border-radius: 15px;
	background-color: #ffffff;
	cursor: move;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.angle-view:hover {
	transform: scale(1.02);
	box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.angle-view ul,
.angle-view li {
	margin: 0;
	padding: 0;
}

.angle-view li {
	list-style: none;
}

.angle-view ul {
	width: 100%;
	height: auto;
	aspect-ratio: 16/10;
	display: flex;
	align-items: center;
	justify-content: center;
}

.angle-view img {
	width: 90%;
	max-width: 100%;
	height: auto;
	display: block;
	margin: 15px auto;
	object-fit: contain;
}

/* 控制按钮 */
.controls {
	display: flex;
	justify-content: center;
	gap: 15px;
	margin-top: 20px;
}

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 12px 28px;
	font-size: 14px;
	font-weight: 600;
	color: #fff;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	border: none;
	border-radius: 25px;
	cursor: pointer;
	transition: all 0.3s ease;
	box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn:hover {
	transform: translateY(-2px);
	box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn:active {
	transform: translateY(0);
}

/* 动画 */
@keyframes fadeInDown {
	from {
		opacity: 0;
		transform: translateY(-30px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

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

/* 响应式设计 - 平板 */
@media screen and (max-width: 968px) {
	.wrapper {
		padding: 30px 15px;
	}

	.header h1 {
		font-size: 30px;
	}

	.header p {
		font-size: 14px;
	}

	.showcase-container {
		grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
		gap: 25px;
	}

	.showcase-item {
		padding: 20px;
	}
}

/* 响应式设计 - 手机 */
@media screen and (max-width: 640px) {
	.wrapper {
		padding: 25px 12px;
	}

	.header {
		margin-bottom: 30px;
	}

	.header h1 {
		font-size: 24px;
	}

	.header p {
		font-size: 13px;
	}

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

	.showcase-item {
		padding: 18px;
		border-radius: 15px;
	}

	.showcase-item h3 {
		font-size: 16px;
	}

	.angle-view {
		border-radius: 12px;
	}

	.btn {
		padding: 10px 24px;
		font-size: 13px;
	}

	.controls {
		gap: 10px;
	}
}

/* 响应式设计 - 小屏手机 */
@media screen and (max-width: 400px) {
	.header h1 {
		font-size: 20px;
	}

	.showcase-item {
		padding: 15px;
	}

	.btn {
		padding: 8px 20px;
		font-size: 12px;
	}
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
	.angle-view {
		cursor: grab;
	}

	.angle-view:hover {
		transform: none;
	}
}