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

:root {
	--primary: #FF6B35;
	--primary-dark: #E55A2B;
	--secondary: #004E89;
	--accent: #1A659E;
	--text: #2D3748;
	--text-light: #718096;
	--bg: #FFFFFF;
	--bg-alt: #F7FAFC;
	--border: #E2E8F0;
	--success: #48BB78;
	--shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
	--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
	font-family: 'Inter', 'Noto Sans TC', 'Noto Sans SC', sans-serif;
	color: var(--text);
	line-height: 1.6;
	overflow-x: hidden;
}

/* Language Switcher */
.lang-switcher {
	position: fixed;
	top: 20px;
	right: 20px;
	z-index: 2000;
	background: white;
	border-radius: 30px;
	box-shadow: var(--shadow);
	padding: 4px;
	display: flex;
	gap: 0px;
}

.lang-btn {
	padding: 6px 8px;
	border: none;
	background: transparent;
	border-radius: 20px;
	cursor: pointer;
	font-weight: 600;
	font-size: 0.875rem;
	transition: all 0.3s;
	color: var(--text-light);
}

.lang-btn.active {
	background: var(--primary);
	color: white;
}

.lang-btn:hover:not(.active) {
	color: var(--primary);
}

/* Navigation */
nav {
	position: fixed;
	top: 0;
	width: 100%;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	z-index: 1000;
	border-bottom: 1px solid var(--border);
}

.nav-container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 1rem 2rem;
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.logo {
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--primary);
	text-decoration: none;
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.logo-icon {
	width: 32px;
	height: 32px;
	background: var(--primary);
	border-radius: 8px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: white;
	font-weight: 700;
}

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

.nav-links a {
	text-decoration: none;
	color: var(--text);
	font-weight: 500;
	transition: color 0.3s;
}

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

.btn {
	padding: 0.75rem 1.5rem;
	border-radius: 8px;
	font-weight: 600;
	text-decoration: none;
	transition: all 0.3s;
	cursor: pointer;
	border: none;
	font-size: 1rem;
}

.btn-primary {
	background: var(--primary);
	color: white;
}

.btn-primary:hover {
	background: var(--primary-dark);
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.btn-outline {
	background: transparent;
	color: var(--primary);
	border: 2px solid var(--primary);
}

.btn-outline:hover {
	background: var(--primary);
	color: white;
}

/* Hero Section */
.hero {
	margin-top: 80px;
	padding: 4rem 2rem;
	background: linear-gradient(135deg, #FFF5F2 0%, #FFFFFF 50%, #F0F9FF 100%);
	min-height: 90vh;
	display: flex;
	align-items: center;
}

.hero-container {
	max-width: 1200px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 4rem;
	align-items: center;
}

.hero-content h1 {
	font-size: 3.5rem;
	line-height: 1.2;
	margin-bottom: 1.5rem;
	color: var(--text);
}

.hero-content h1 span {
	color: var(--primary);
}

.hero-subtitle {
	font-size: 1.25rem;
	color: var(--text-light);
	margin-bottom: 2rem;
	max-width: 500px;
}

.hero-buttons {
	display: flex;
	gap: 1rem;
	margin-bottom: 3rem;
}

.hero-stats {
	display: flex;
	gap: 3rem;
}

.stat {
	text-align: center;
}

.stat-number {
	font-size: 2.5rem;
	font-weight: 700;
	color: var(--primary);
}

.stat-label {
	color: var(--text-light);
	font-size: 0.875rem;
}

.hero-visual {
	position: relative;
}

.chat-preview {
	background: white;
	border-radius: 20px;
	box-shadow: var(--shadow-lg);
	padding: 2rem;
	max-width: 400px;
	margin-left: auto;
}

.chat-header {
	display: flex;
	align-items: center;
	gap: 1rem;
	margin-bottom: 1.5rem;
	padding-bottom: 1rem;
	border-bottom: 1px solid var(--border);
}

.chat-avatar {
	width: 48px;
	height: 48px;
	background: linear-gradient(135deg, var(--primary), var(--secondary));
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: white;
	font-weight: 700;
}

.chat-info h3 {
	font-size: 1rem;
	margin-bottom: 0.25rem;
}

.chat-info p {
	font-size: 0.875rem;
	color: var(--text-light);
}

.message {
	margin-bottom: 1rem;
	padding: 1rem;
	border-radius: 12px;
	max-width: 80%;
}

.message-incoming {
	background: var(--bg-alt);
	margin-right: auto;
	border-bottom-left-radius: 4px;
}

.message-outgoing {
	background: var(--primary);
	color: white;
	margin-left: auto;
	border-bottom-right-radius: 4px;
}

.typing-indicator {
	display: flex;
	gap: 0.25rem;
	padding: 1rem;
}

.typing-dot {
	width: 8px;
	height: 8px;
	background: var(--text-light);
	border-radius: 50%;
	animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s;  }
.typing-dot:nth-child(3) { animation-delay: 0.4s;  }

@keyframes typing {
	0%, 60%, 100% { transform: translateY(0);  }
	30% { transform: translateY(-10px);  }
}

/* Features Section */
.features {
	padding: 6rem 2rem;
	background: var(--bg);
}

.section-container {
	max-width: 1200px;
	margin: 0 auto;
}

.section-header {
	text-align: center;
	margin-bottom: 4rem;
}

.section-header h2 {
	font-size: 2.5rem;
	margin-bottom: 1rem;
}

.section-header p {
	color: var(--text-light);
	font-size: 1.125rem;
	max-width: 600px;
	margin: 0 auto;
}

.features-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 2rem;
}

.feature-card {
	padding: 2rem;
	border-radius: 16px;
	background: var(--bg-alt);
	transition: all 0.3s;
	border: 1px solid transparent;
}

.feature-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-lg);
	border-color: var(--border);
	background: white;
}

.feature-icon {
	width: 60px;
	height: 60px;
	background: linear-gradient(135deg, var(--primary), var(--secondary));
	border-radius: 12px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: white;
	font-size: 1.5rem;
	margin-bottom: 1.5rem;
}

.feature-card h3 {
	font-size: 1.25rem;
	margin-bottom: 0.75rem;
}

.feature-card p {
	color: var(--text-light);
	font-size: 0.95rem;
}

/* How It Works */
.how-it-works {
	padding: 6rem 2rem;
	background: var(--bg-alt);
}

.steps {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 2rem;
	margin-top: 3rem;
}

.step {
	text-align: center;
	position: relative;
}

.step:not(:last-child)::after {
	content: '→';
	position: absolute;
	right: -1.5rem;
	top: 2rem;
	font-size: 1.5rem;
	color: var(--primary);
}

.step-number {
	width: 60px;
	height: 60px;
	background: var(--primary);
	color: white;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.5rem;
	font-weight: 700;
	margin: 0 auto 1.5rem;
}

.step h3 {
	font-size: 1.25rem;
	margin-bottom: 0.5rem;
}

.step p {
	color: var(--text-light);
	font-size: 0.95rem;
}

/* Target Audience */
.audience {
	padding: 6rem 2rem;
	background: white;
}

.audience-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 2rem;
	margin-top: 3rem;
}

.audience-card {
	display: flex;
	gap: 1.5rem;
	padding: 2rem;
	border-radius: 16px;
	background: var(--bg-alt);
	transition: all 0.3s;
}

.audience-card:hover {
	background: white;
	box-shadow: var(--shadow-lg);
}

.audience-icon {
	width: 64px;
	height: 64px;
	background: linear-gradient(135deg, var(--secondary), var(--accent));
	border-radius: 12px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: white;
	font-size: 1.75rem;
	flex-shrink: 0;
}

.audience-content h3 {
	font-size: 1.25rem;
	margin-bottom: 0.5rem;
}

.audience-content p {
	color: var(--text-light);
	font-size: 0.95rem;
}

/* Team Section */
.team {
	padding: 6rem 2rem;
	background: linear-gradient(135deg, var(--secondary) 0%, var(--accent) 100%);
	color: white;
}

.team .section-header h2,
.team .section-header p {
	color: white;
}

.team-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 2rem;
	margin-top: 3rem;
}

.team-member {
	background: rgba(255, 255, 255, 0.1);
	backdrop-filter: blur(10px);
	padding: 2rem;
	border-radius: 16px;
	text-align: center;
	border: 1px solid rgba(255, 255, 255, 0.2);
}

.team-avatar {
	width: 80px;
	height: 80px;
	background: white;
	border-radius: 50%;
	margin: 0 auto 1.5rem;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 2rem;
}

.team-member h3 {
	font-size: 1.25rem;
	margin-bottom: 0.5rem;
}

.team-member .role {
	color: rgba(255, 255, 255, 0.8);
	font-size: 0.875rem;
	margin-bottom: 1rem;
}

.team-member p {
	font-size: 0.9rem;
	color: rgba(255, 255, 255, 0.9);
}

/* Pricing */
.pricing {
	padding: 6rem 2rem;
	background: var(--bg);
}

.pricing-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 2rem;
	margin-top: 3rem;
	max-width: 1000px;
	margin-left: auto;
	margin-right: auto;
}

.pricing-card {
	background: white;
	border-radius: 20px;
	padding: 2.5rem;
	box-shadow: var(--shadow);
	border: 2px solid transparent;
	transition: all 0.3s;
	position: relative;
}

.pricing-card.featured {
	border-color: var(--primary);
	transform: scale(1.05);
}

.pricing-card.featured::before {
	content: attr(data-badge);
	position: absolute;
	top: -12px;
	left: 50%;
	transform: translateX(-50%);
	background: var(--primary);
	color: white;
	padding: 0.25rem 1rem;
	border-radius: 20px;
	font-size: 0.875rem;
	font-weight: 600;
}

.pricing-card:hover {
	box-shadow: var(--shadow-lg);
}

.pricing-header {
	text-align: center;
	margin-bottom: 2rem;
	padding-bottom: 2rem;
	border-bottom: 1px solid var(--border);
}

.pricing-name {
	font-size: 1.5rem;
	margin-bottom: 0.5rem;
}

.pricing-price {
	font-size: 3rem;
	font-weight: 700;
	color: var(--primary);
}

.pricing-price span {
	font-size: 1rem;
	color: var(--text-light);
	font-weight: 400;
}

.pricing-features {
	list-style: none;
	margin-bottom: 2rem;
}

.pricing-features li {
	padding: 0.75rem 0;
	border-bottom: 1px solid var(--border);
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.pricing-features li::before {
	content: '✓';
	color: var(--success);
	font-weight: 700;
}

/* Testimonials */
.testimonials {
	padding: 6rem 2rem;
	background: var(--bg-alt);
}

.testimonial-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 2rem;
	margin-top: 3rem;
}

.testimonial-card {
	background: white;
	padding: 2rem;
	border-radius: 16px;
	box-shadow: var(--shadow);
}

.testimonial-stars {
	color: #F6E05E;
	margin-bottom: 1rem;
	font-size: 1.25rem;
}

.testimonial-text {
	font-size: 1rem;
	margin-bottom: 1.5rem;
	line-height: 1.8;
}

.testimonial-author {
	display: flex;
	align-items: center;
	gap: 1rem;
}
.author-avatar {
	width: 48px;
	height: 48px;
	background: var(--primary);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: white;
	font-weight: 700;
}

.author-info h4 {
	font-size: 1rem;
	margin-bottom: 0.25rem;
}

.author-info p {
	font-size: 0.875rem;
	color: var(--text-light);
}

/* CTA Section */
.cta {
	padding: 6rem 2rem;
	background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
	color: white;
	text-align: center;
}

.cta h2 {
	font-size: 2.5rem;
	margin-bottom: 1rem;
}

.cta p {
	font-size: 1.25rem;
	margin-bottom: 2rem;
	opacity: 0.9;
}

.cta-buttons {
	display: flex;
	gap: 1rem;
	justify-content: center;
}

.btn-white {
	background: white;
	color: var(--primary);
}

.btn-white:hover {
	background: var(--bg-alt);
}

.btn-transparent {
	background: transparent;
	color: white;
	border: 2px solid white;
}

.btn-transparent:hover {
	background: white;
	color: var(--primary);
}

/* Footer */
footer {
	background: var(--text);
	color: white;
	padding: 4rem 2rem 2rem;
}

.footer-container {
	max-width: 1200px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: 2fr 1fr 1fr 1fr;
	gap: 4rem;
	margin-bottom: 3rem;
}

.footer-brand h3 {
	font-size: 1.5rem;
	margin-bottom: 1rem;
	color: var(--primary);
}

.footer-brand p {
	color: rgba(255, 255, 255, 0.7);
	margin-bottom: 1.5rem;
}

.footer-links h4 {
	font-size: 1rem;
	margin-bottom: 1.5rem;
	color: white;
}

.footer-links ul {
	list-style: none;
}

.footer-links li {
	margin-bottom: 0.75rem;
}

.footer-links a {
	color: rgba(255, 255, 255, 0.7);
	text-decoration: none;
	transition: color 0.3s;
}

.footer-links a:hover {
	color: var(--primary);
}

.footer-bottom {
	max-width: 1200px;
	margin: 0 auto;
	padding-top: 2rem;
	border-top: 1px solid rgba(255, 255, 255, 0.1);
	display: flex;
	justify-content: space-between;
	align-items: center;
	color: rgba(255, 255, 255, 0.5);
	font-size: 0.875rem;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
	.hero-container {
		grid-template-columns: 1fr;
		text-align: center;
	}
	
	.hero-content h1 {
		font-size: 2.5rem;
	}
	
	.hero-stats {
		justify-content: center;
	}
	
	.chat-preview {
		margin: 0 auto;
		max-width: 100%;
	}
	
	.features-grid,
	.steps,
	.team-grid,
	.pricing-grid,
	.testimonial-grid {
		grid-template-columns: repeat(2, 1fr);
	}
	
	.audience-grid {
		grid-template-columns: 1fr;
	}
	
	.footer-container {
		grid-template-columns: 1fr 1fr;
	}
}

@media (max-width: 640px) {
	.nav-links {
		display: none;
	}
	
	.hero-content h1 {
		font-size: 2rem;
	}
	
	.hero-buttons {
		flex-direction: column;
	}
	
	.features-grid,
	.steps,
	.team-grid,
	.pricing-grid,
	.testimonial-grid,
	.footer-container {
		grid-template-columns: 1fr;
	}
	
	.step:not(:last-child)::after {
		content: '↓';
		right: 50%;
		top: 100%;
		transform: translateX(50%);
	}
	
	.pricing-card.featured {
		transform: scale(1);
	}
	
	.lang-switcher {
		top: 10px;
		right: 10px;
	}
	
	.lang-btn {
		padding: 6px 12px;
		font-size: 0.75rem;
	}
}