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

:root {
	--color-bg: #fafafa;
	--color-text: #1a1a1a;
	--color-muted: #666;
	--color-border: #e0e0e0;
	--color-accent: #0066cc;
	--color-hover: #004999;
	--font-sans:
		-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
		Arial, sans-serif;
	--font-mono:
		"SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New",
		monospace;
}

body {
	font-family: var(--font-sans);
	line-height: 1.6;
	color: var(--color-text);
	background: var(--color-bg);
	padding: 2rem 1rem;
}

.container {
	max-width: 42rem;
	margin: 0 auto;
}

.site-header {
	margin-bottom: 3rem;
	text-align: center;
}

.site-title {
	font-size: 2.5rem;
	font-weight: 700;
	margin-bottom: 0.5rem;
	font-family: var(--font-mono);
	letter-spacing: -0.02em;
}

.site-tagline {
	font-size: 1.125rem;
	color: var(--color-muted);
	font-weight: 400;
}

.intro {
	margin-bottom: 3rem;
}

.intro p {
	margin-bottom: 1rem;
	font-size: 1.0625rem;
}

.compact-more {
	margin-top: 0.75rem;
	padding: 0.75rem 0.9rem;
	border: 1px solid var(--color-border);
	border-radius: 0.4rem;
	background: #fff;
}

.compact-more summary {
	cursor: pointer;
	font-weight: 600;
	font-size: 0.95rem;
}

.compact-more p {
	margin: 0.65rem 0 0;
	font-size: 0.95rem;
	color: var(--color-muted);
}

.principles {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin-top: 1.5rem;
}

.principle-tag {
	background: var(--color-text);
	color: var(--color-bg);
	padding: 0.375rem 0.75rem;
	border-radius: 0.25rem;
	font-size: 0.875rem;
	font-weight: 500;
}

.tools-section {
	margin-bottom: 3rem;
}

.section-title {
	font-size: 1.5rem;
	font-weight: 600;
	margin-bottom: 1.5rem;
	border-bottom: 2px solid var(--color-border);
	padding-bottom: 0.5rem;
}

.tools-grid {
	display: grid;
	gap: 1rem;
}

.tool-card {
	border: 2px solid var(--color-border);
	border-radius: 0.5rem;
	padding: 1.5rem;
	text-decoration: none;
	color: inherit;
	transition: all 0.2s ease;
	display: block;
}

.tool-card:hover {
	border-color: var(--color-accent);
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
	transform: translateY(-1px);
}

.tool-card:active {
	transform: translateY(0);
}

.tool-title {
	font-size: 1.25rem;
	font-weight: 600;
	margin-bottom: 0.5rem;
	color: var(--color-accent);
}

.tool-card:hover .tool-title {
	color: var(--color-hover);
}

.tool-description {
	color: var(--color-muted);
	font-size: 0.9375rem;
}

.coming-soon {
	background: var(--color-bg);
	border-style: dashed;
	opacity: 0.6;
}

.coming-soon:hover {
	border-style: dashed;
	transform: none;
	box-shadow: none;
	cursor: default;
}

.coming-soon .tool-title {
	color: var(--color-muted);
}

.faq-section {
	margin-bottom: 3rem;
}

.faq-item {
	margin-bottom: 0.8rem;
	border: 1px solid var(--color-border);
	border-radius: 0.45rem;
	background: #fff;
	padding: 0.7rem 0.85rem;
}

.faq-question {
	font-size: 1.125rem;
	font-weight: 600;
	cursor: pointer;
	list-style: none;
}

.faq-question::-webkit-details-marker {
	display: none;
}

.faq-item[open] .faq-question {
	margin-bottom: 0.45rem;
}

.faq-answer {
	color: var(--color-muted);
	font-size: 1rem;
	line-height: 1.6;
	margin: 0;
}

.site-footer {
	margin-top: 4rem;
	padding-top: 2rem;
	border-top: 1px solid var(--color-border);
	text-align: center;
	color: var(--color-muted);
	font-size: 0.875rem;
}

.site-footer nav {
	margin-bottom: 1rem;
}

.footer-link {
	color: var(--color-accent);
	text-decoration: none;
	margin: 0 0.5rem;
}

.footer-link:hover {
	color: var(--color-hover);
	text-decoration: underline;
}

@media (max-width: 640px) {
	.site-title {
		font-size: 2rem;
	}

	.site-tagline {
		font-size: 1rem;
	}
}