:root {
	--bg-top: #f4ede0;
	--bg-bottom: #f8f7f2;
	--card: rgba(255, 252, 247, 0.92);
	--card-border: rgba(122, 88, 36, 0.14);
	--card-shadow: 0 18px 48px rgba(67, 53, 26, 0.12);
	--text: #2f2417;
	--muted: #6f5a3c;
	--accent: #8d5f1f;
	--accent-strong: #5c3f14;
	--line: rgba(122, 88, 36, 0.16);
	--code-bg: rgba(93, 71, 42, 0.08);
	--max-width: 1180px;
	--radius-lg: 28px;
	--radius-md: 18px;
	--radius-sm: 12px;
}

* {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	min-height: 100vh;
	color: var(--text);
	background:
		radial-gradient(circle at top left, rgba(172, 121, 43, 0.16), transparent 34%),
		linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 48%, #faf9f6 100%);
	font-family: "Segoe UI Variable Text", "Aptos", "Microsoft YaHei UI", "PingFang SC", sans-serif;
	line-height: 1.72;
}

a {
	color: var(--accent-strong);
	text-decoration-thickness: 1.5px;
	text-underline-offset: 0.18em;
}

a:hover {
	color: var(--accent);
}

code {
	padding: 0.12rem 0.36rem;
	border-radius: 999px;
	background: var(--code-bg);
	font-family: "Cascadia Code", "Consolas", monospace;
	font-size: 0.92em;
}

.page-shell {
	width: min(100%, var(--max-width));
	margin: 0 auto;
	padding: 28px 20px 48px;
}

.page-header {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 24px;
	margin-bottom: 28px;
}

.masthead {
	max-width: 760px;
}

.eyebrow {
	margin: 0 0 10px;
	color: var(--accent);
	font-size: 0.9rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

#policy-title {
	margin: 0;
	font-family: "Palatino Linotype", "Book Antiqua", "Noto Serif SC", "Songti SC", serif;
	font-size: clamp(2.25rem, 4vw, 3.4rem);
	line-height: 1.08;
}

.lead {
	margin: 16px 0 0;
	max-width: 62ch;
	color: var(--muted);
	font-size: 1.03rem;
}

.language-panel {
	position: sticky;
	top: 18px;
	display: flex;
	flex-direction: column;
	align-items: flex-end;
	gap: 10px;
	padding: 14px 16px;
	border: 1px solid var(--card-border);
	border-radius: var(--radius-md);
	background: rgba(255, 250, 242, 0.82);
	backdrop-filter: blur(12px);
	box-shadow: var(--card-shadow);
}

.language-label {
	color: var(--muted);
	font-size: 0.86rem;
	font-weight: 600;
}

.language-switch {
	display: inline-flex;
	padding: 4px;
	border-radius: 999px;
	background: rgba(117, 85, 38, 0.1);
}

.lang-button {
	border: 0;
	border-radius: 999px;
	padding: 10px 16px;
	background: transparent;
	color: var(--muted);
	font: inherit;
	font-weight: 700;
	cursor: pointer;
	transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.lang-button:hover,
.lang-button:focus-visible {
	outline: none;
	background: rgba(141, 95, 31, 0.12);
	color: var(--accent-strong);
}

.lang-button.is-active {
	background: linear-gradient(180deg, #9a6a28 0%, #7b521d 100%);
	color: #fffaf2;
	box-shadow: 0 8px 18px rgba(123, 82, 29, 0.28);
}

.page-grid {
	display: grid;
	grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
	gap: 24px;
	align-items: start;
}

.policy-sidebar {
	position: sticky;
	top: 108px;
	display: grid;
	gap: 20px;
}

.card {
	border: 1px solid var(--card-border);
	border-radius: var(--radius-lg);
	background: var(--card);
	box-shadow: var(--card-shadow);
}

.policy-meta,
.policy-toc {
	padding: 22px 22px 24px;
}

.policy-main {
	padding: 26px 28px 14px;
}

.policy-meta h2,
.policy-toc h2,
.policy-section h2,
.policy-subsection h3 {
	margin: 0;
	font-family: "Palatino Linotype", "Book Antiqua", "Noto Serif SC", "Songti SC", serif;
}

.policy-meta h2,
.policy-toc h2 {
	font-size: 1.08rem;
}

.meta-list {
	margin: 16px 0 0;
	display: grid;
	grid-template-columns: 1fr;
	gap: 12px;
}

.meta-row {
	display: grid;
	gap: 4px;
	padding-bottom: 12px;
	border-bottom: 1px solid var(--line);
}

.meta-row:last-child {
	padding-bottom: 0;
	border-bottom: 0;
}

.meta-row dt {
	color: var(--muted);
	font-size: 0.88rem;
	font-weight: 700;
}

.meta-row dd {
	margin: 0;
	font-size: 0.98rem;
	word-break: break-word;
}

.replace-notice {
	margin: 16px 0 0;
	color: var(--muted);
	font-size: 0.93rem;
}

.toc-list {
	margin: 16px 0 0;
	padding-left: 20px;
}

.toc-list li {
	margin-top: 10px;
}

.toc-list a {
	color: inherit;
	text-decoration: none;
}

.toc-list a:hover {
	color: var(--accent);
}

.policy-section {
	padding: 0 0 28px;
	margin: 0 0 28px;
	border-bottom: 1px solid var(--line);
	scroll-margin-top: 28px;
}

.policy-section:last-child {
	margin-bottom: 0;
	padding-bottom: 0;
	border-bottom: 0;
}

.policy-section h2 {
	font-size: clamp(1.4rem, 2.2vw, 1.85rem);
	margin-bottom: 16px;
}

.section-block {
	margin: 14px 0 0;
}

.section-block:first-child {
	margin-top: 0;
}

.section-list {
	margin: 14px 0 0;
	padding-left: 22px;
}

.section-list li {
	margin-top: 10px;
}

.policy-subsection {
	margin-top: 22px;
	padding-top: 18px;
	border-top: 1px dashed rgba(122, 88, 36, 0.2);
	scroll-margin-top: 28px;
}

.policy-subsection:first-of-type {
	margin-top: 18px;
}

.policy-subsection h3 {
	font-size: 1.1rem;
	margin-bottom: 12px;
}

.noscript-banner {
	margin: 0 auto 28px;
	width: min(100%, 760px);
	padding: 14px 16px;
	border-radius: var(--radius-sm);
	background: #fff4df;
	color: #6e4b14;
	text-align: center;
	font-size: 0.95rem;
}

@media (max-width: 980px) {
	.page-header,
	.page-grid {
		grid-template-columns: 1fr;
		display: grid;
	}

	.page-header {
		gap: 18px;
	}

	.language-panel,
	.policy-sidebar {
		position: static;
	}

	.language-panel {
		justify-self: end;
	}
}

@media (max-width: 680px) {
	.page-shell {
		padding: 18px 14px 32px;
	}

	.language-panel {
		width: 100%;
		align-items: stretch;
	}

	.language-switch {
		width: 100%;
	}

	.lang-button {
		flex: 1 1 50%;
	}

	.policy-main,
	.policy-meta,
	.policy-toc {
		padding: 20px 18px 22px;
	}

	.toc-list,
	.section-list {
		padding-left: 18px;
	}
}