:root {
	--blue: #1da1f2;
	--blue-deep: #1991da;
	--ink: #0f1419;
	--mute: #536471;
	--line: #eff3f4;
	--white: #ffffff;
	--font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang TC", "Microsoft JhengHei", sans-serif;
	--ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	min-height: 100%;
	background: var(--white);
	color: var(--ink);
	font-family: var(--font-sans);
	font-feature-settings: "cv02", "cv03", "cv04", "cv11";
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	overflow-x: hidden;
}

a {
	color: inherit;
	text-decoration: none;
}

@keyframes rise {
	from {
		opacity: 0;
		transform: translateY(16px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* ── Nav (same language as business.thui.net) ── */
.biz-nav {
	--biz-nav-h: 80px;
	position: sticky;
	top: 0;
	z-index: 40;
	background: var(--white);
	border-bottom: 1px solid var(--line);
	animation: rise 0.7s var(--ease) both;
}

.biz-nav-inner {
	width: 100%;
	max-width: none;
	margin: 0;
	padding: 0 32px 0 28px;
	height: var(--biz-nav-h);
	display: flex;
	align-items: center;
	gap: 32px;
}

.biz-nav-brand {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	flex-shrink: 0;
	margin-right: auto;
	text-decoration: none;
	color: var(--ink);
}

.biz-nav-brand img {
	height: 28px;
	width: auto;
	max-width: 168px;
	object-fit: contain;
	display: block;
	flex-shrink: 0;
	filter: brightness(0) saturate(100%) invert(54%) sepia(98%) saturate(1956%) hue-rotate(180deg) brightness(102%) contrast(101%);
}

.biz-nav-toggle {
	display: none;
	margin-left: auto;
	width: 40px;
	height: 40px;
	border: 1px solid var(--line);
	border-radius: 999px;
	background: var(--white);
	color: var(--ink);
	cursor: pointer;
	align-items: center;
	justify-content: center;
}

.biz-nav-panel {
	flex-shrink: 1;
	min-width: 0;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: 20px;
}

.biz-nav-main {
	display: flex;
	align-items: stretch;
	height: var(--biz-nav-h);
	gap: 2px;
}

.biz-nav-link {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	height: 100%;
	padding: 0 14px;
	border: 0;
	background: transparent;
	font: inherit;
	font-size: 15px;
	font-weight: 700;
	color: var(--ink);
	cursor: pointer;
	white-space: nowrap;
	position: relative;
	transition: color 0.2s var(--ease);
	text-decoration: none;
}

.biz-nav-link::after {
	content: "";
	position: absolute;
	left: 14px;
	right: 14px;
	bottom: 0;
	height: 3px;
	border-radius: 3px 3px 0 0;
	background: var(--blue);
	transform: scaleX(0);
	transition: transform 0.22s var(--ease);
}

.biz-nav-link.is-active::after,
.biz-nav-link:hover::after {
	transform: scaleX(1);
}

.biz-nav-link.is-active,
.biz-nav-link:hover {
	color: var(--blue);
}

.biz-nav-actions {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-shrink: 0;
}

.biz-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	height: 40px;
	padding: 0 18px;
	border-radius: 999px;
	font: inherit;
	font-size: 14px;
	font-weight: 700;
	line-height: 1;
	cursor: pointer;
	transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
	text-decoration: none;
}

.biz-btn-outline {
	border: 1px solid #cfd9de;
	background: var(--white);
	color: var(--ink);
}

.biz-btn-outline:hover {
	background: #f7f9f9;
	border-color: #b9c5cc;
}

.corp-lang {
	display: inline-flex;
	align-items: center;
	border: 1px solid #cfd9de;
	border-radius: 999px;
	padding: 3px;
	background: var(--white);
}

.corp-lang-btn {
	border: 0;
	background: transparent;
	font: inherit;
	font-size: 12px;
	font-weight: 700;
	line-height: 1;
	padding: 7px 12px;
	border-radius: 999px;
	color: var(--mute);
	cursor: pointer;
	transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.corp-lang-btn.is-active {
	background: var(--ink);
	color: var(--white);
}

.corp-lang-btn:hover:not(.is-active) {
	color: var(--ink);
}

@media (max-width: 860px) {
	.biz-nav-toggle {
		display: inline-flex;
	}

	.biz-nav-panel {
		position: absolute;
		left: 0;
		right: 0;
		top: var(--biz-nav-h);
		flex-direction: column;
		align-items: stretch;
		gap: 0;
		padding: 12px 20px 20px;
		background: var(--white);
		border-bottom: 1px solid var(--line);
		display: none;
	}

	.biz-nav.is-mobile-open .biz-nav-panel {
		display: flex;
	}

	.biz-nav-main {
		flex-direction: column;
		height: auto;
		gap: 0;
	}

	.biz-nav-link {
		height: auto;
		padding: 14px 4px;
	}

	.biz-nav-actions {
		padding-top: 12px;
		justify-content: flex-start;
	}
}

@media (max-width: 768px) {
	.biz-nav-brand img[src*="logo-horizontal"] {
		height: 22px;
		width: auto;
		max-width: 132px;
	}
}