:root {
	--bg: #f7f7f4;
	--panel: #ffffff;
	--text: #1d1f21;
	--muted: #62666b;
	--border: #e2e2dc;
	--accent: #0b7a5e;
	--accent-text: #ffffff;
	--accent-soft: #e3f2ec;
	--term-bg: #16181b;
	--term-text: #d9dde2;
	--term-err: #ff8a80;
	--term-dim: #8b929a;
	--code-bg: #f1f1ec;
	--mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
	--sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #111315;
		--panel: #181b1e;
		--text: #e6e8ea;
		--muted: #9aa1a8;
		--border: #2a2e33;
		--accent: #3ccf9f;
		--accent-text: #0b1210;
		--accent-soft: #17302a;
		--term-bg: #0b0c0e;
		--code-bg: #1d2024;
	}
}

* { box-sizing: border-box; }

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font: 15px/1.6 var(--sans);
}

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

.visually-hidden {
	position: absolute; width: 1px; height: 1px; overflow: hidden;
	clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- 顶栏 ---------- */

.top {
	display: flex; align-items: center; justify-content: space-between; gap: 12px;
	padding: 14px 24px;
	border-bottom: 1px solid var(--border);
	background: var(--panel);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.mark {
	font-family: var(--mono); font-size: 13px;
	background: var(--text); color: var(--bg);
	padding: 2px 6px; border-radius: 4px;
}
.badge {
	font-size: 12px; font-weight: 500; color: var(--accent);
	background: var(--accent-soft); padding: 1px 8px; border-radius: 999px;
}
.links { display: flex; align-items: center; gap: 16px; font-size: 14px; }

.button {
	font: inherit; font-size: 14px; font-weight: 500;
	background: var(--accent); color: var(--accent-text);
	border: 0; border-radius: 6px; padding: 6px 14px;
	cursor: pointer; text-decoration: none; white-space: nowrap;
}
.button:hover { filter: brightness(1.08); }
.button.secondary { background: transparent; color: var(--text); box-shadow: inset 0 0 0 1px var(--border); }

.notice {
	max-width: 1180px; margin: 20px auto 0; padding: 12px 16px;
	font-size: 14px; color: var(--muted);
	border-left: 3px solid var(--accent); background: var(--panel);
	border-radius: 0 6px 6px 0;
}

/* ---------- 主体 ---------- */

.layout {
	display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 32px;
	max-width: 1180px; margin: 24px auto; padding: 0 24px;
}

aside { position: sticky; top: 16px; align-self: start; max-height: calc(100vh - 32px); overflow-y: auto; }
.picker { display: none; }
#nav h2 {
	font-size: 12px; font-weight: 600; letter-spacing: .04em;
	color: var(--muted); margin: 18px 0 6px;
}
#nav h2:first-child { margin-top: 0; }
#nav a {
	display: block; padding: 5px 10px; border-radius: 6px;
	color: var(--text); text-decoration: none; font-size: 14px;
}
#nav a:hover { background: var(--accent-soft); }
#nav a[aria-current="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

main h1 { font-size: 24px; margin: 0 0 6px; }
.desc { color: var(--muted); margin: 0 0 18px; max-width: 72ch; }

.tabs { display: flex; align-items: center; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tabs button {
	font: inherit; font-size: 14px; background: none; border: 0; color: var(--muted);
	padding: 8px 12px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.tabs a { margin-left: auto; font-size: 14px; text-decoration: none; }

.presets { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.presets button {
	font: 13px var(--mono); background: var(--panel); color: var(--text);
	border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; cursor: pointer;
}
.presets button:hover { border-color: var(--accent); color: var(--accent); }

.cmd {
	display: flex; align-items: center; gap: 8px;
	background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
	padding: 6px 6px 6px 12px; font-family: var(--mono); font-size: 13px;
}
.cmd .prompt { color: var(--muted); white-space: nowrap; }
.cmd input {
	flex: 1; min-width: 0; font: inherit; color: var(--text);
	background: transparent; border: 0; outline: none; padding: 6px 0;
}

.terminal {
	margin: 12px 0 0; min-height: 320px; max-height: 70vh; overflow: auto;
	background: var(--term-bg); color: var(--term-text);
	font: 13px/1.55 var(--mono); padding: 14px 16px; border-radius: 8px;
	white-space: pre-wrap; word-break: break-word;
}
.terminal .err { color: var(--term-err); }
.terminal .dim { color: var(--term-dim); }

.status { font-size: 13px; color: var(--muted); margin-top: 8px; font-family: var(--mono); }

.source-path { font: 13px var(--mono); color: var(--muted); margin-bottom: 8px; }
.source {
	margin: 0; background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
	padding: 14px 16px; overflow: auto; max-height: 75vh; font: 13px/1.55 var(--mono);
}

footer {
	max-width: 1180px; margin: 0 auto 32px; padding: 16px 24px 0;
	font-size: 13px; color: var(--muted); border-top: 1px solid var(--border);
}

/* ---------- 窄屏 ---------- */

@media (max-width: 760px) {
	.top { padding: 12px 16px; flex-wrap: wrap; }
	.notice { margin: 16px 16px 0; }
	.layout { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 0 16px; margin-top: 16px; }
	aside { position: static; max-height: none; }
	#nav { display: none; }
	.picker { display: block; }
	.picker select {
		width: 100%; font: inherit; padding: 8px 10px; border-radius: 6px;
		border: 1px solid var(--border); background: var(--panel); color: var(--text);
	}
	.cmd { flex-wrap: wrap; }
	.cmd .prompt { width: 100%; overflow: hidden; text-overflow: ellipsis; }
	.terminal { min-height: 240px; }
	footer { padding: 16px 16px 0; }
}