:root {
	color-scheme: dark;
	--bg: #0b151a;
	--bg-2: #11252e;
	--bg-3: #183642;
	--surface: rgba(14, 32, 39, 0.78);
	--surface-strong: rgba(8, 24, 30, 0.9);
	--nav-bg: rgba(10, 28, 34, 0.66);
	--line: rgba(130, 198, 186, 0.28);
	--line-strong: rgba(130, 243, 218, 0.52);
	--text: #dcf0ea;
	--text-dim: #97b7b0;
	--shadow-strong: rgba(2, 12, 16, 0.45);
	--shadow-soft: rgba(2, 12, 16, 0.35);
	--brand: #35c9a8;
	--brand-deep: #1ea489;
	--warn: #f04f5f;
	--gold: #f6b93c;
	--toc-active-bg: rgba(100, 242, 205, 0.08);
	--toc-active-text: #d7fff4;
	--toc-active-border: #72f2ce;
	--mobile-toc-bg: rgba(10, 28, 34, 0.9);
	--mobile-toc-hover-bg: rgba(100, 242, 205, 0.1);
	--mobile-toc-summary-text: #c5f6ea;
	--section-bg: rgba(9, 33, 39, 0.8);
	--section-line: rgba(137, 221, 203, 0.2);
	--section-line-hover: rgba(137, 221, 203, 0.38);
	--cmd-bg: rgba(7, 28, 34, 0.92);
	--cmd-line: rgba(134, 219, 201, 0.22);
	--cmd-line-hover: rgba(130, 244, 215, 0.65);
	--cmd-left-text: #8deed3;
	--stat-bg: rgba(6, 27, 34, 0.84);
	--stat-line: rgba(126, 223, 203, 0.28);
	--stat-strong: #b6f6e4;
	--feature-bg: rgba(8, 31, 38, 0.86);
	--feature-line: rgba(137, 221, 203, 0.2);
	--toast-bg: rgba(6, 20, 24, 0.92);
	--toast-line: rgba(102, 220, 190, 0.45);
	--kbd-bg: rgba(14, 40, 49, 0.95);
	--kbd-line: rgba(137, 221, 203, 0.24);
	--kbd-text: #9deed8;
	--backtop-bg: rgba(7, 23, 29, 0.92);
	--backtop-line: rgba(102, 220, 190, 0.5);
	--hot-card-border: rgba(255, 156, 108, 0.45);
	--hot-card-grad-a: rgba(38, 23, 20, 0.58);
	--hot-card-grad-b: rgba(20, 22, 21, 0.86);
	--hot-card-shadow: rgba(255, 110, 60, 0.14);
	--hot-card-border-hover: rgba(255, 176, 132, 0.62);
	--hot-card-shadow-hover: rgba(255, 118, 70, 0.2);
	--hero-text-mobile: #d7fff4;
	--hero-gradient-a: #f2fffb;
	--hero-gradient-b: #a8ebd9;
	--hero-gradient-c: #66d8bb;
	--table-input-bg: rgba(7, 28, 34, 0.92);
	--table-input-line: rgba(130, 198, 186, 0.35);
	--table-wrap-bg: rgba(7, 28, 34, 0.82);
	--table-wrap-line: rgba(130, 198, 186, 0.35);
	--table-cell-line: rgba(130, 198, 186, 0.2);
	--table-head-bg: rgba(9, 37, 46, 0.98);
	--table-head-text: #b9f3e3;
	--table-sticky-bg: rgba(7, 28, 34, 0.98);
	--table-row-hover: rgba(84, 219, 184, 0.08);
	--table-sticky-hover: rgba(15, 56, 68, 0.96);
	--radius: 18px;
	--nav-offset: 12px;
	--nav-height: 72px;
}

@media (prefers-color-scheme: light) {
	:root {
		color-scheme: light;
		--bg: #edf5f7;
		--bg-2: #e2eff3;
		--bg-3: #d8e8ee;
		--surface: rgba(255, 255, 255, 0.84);
		--surface-strong: rgba(255, 255, 255, 0.92);
		--nav-bg: rgba(255, 255, 255, 0.88);
		--line: rgba(54, 120, 117, 0.22);
		--line-strong: rgba(43, 140, 129, 0.5);
		--text: #10343a;
		--text-dim: #476e72;
		--shadow-strong: rgba(31, 78, 87, 0.18);
		--shadow-soft: rgba(31, 78, 87, 0.14);
		--toc-active-bg: rgba(30, 164, 137, 0.18);
		--toc-active-text: #0f4f49;
		--toc-active-border: #1f8f83;
		--mobile-toc-bg: rgba(250, 254, 255, 0.96);
		--mobile-toc-hover-bg: rgba(30, 164, 137, 0.12);
		--mobile-toc-summary-text: #1b5f58;
		--section-bg: rgba(255, 255, 255, 0.86);
		--section-line: rgba(72, 138, 135, 0.2);
		--section-line-hover: rgba(50, 130, 124, 0.36);
		--cmd-bg: rgba(255, 255, 255, 0.96);
		--cmd-line: rgba(72, 138, 135, 0.24);
		--cmd-line-hover: rgba(30, 164, 137, 0.5);
		--cmd-left-text: #1b6d65;
		--stat-bg: rgba(255, 255, 255, 0.95);
		--stat-line: rgba(70, 134, 130, 0.22);
		--stat-strong: #1a6f67;
		--feature-bg: rgba(255, 255, 255, 0.94);
		--feature-line: rgba(72, 138, 135, 0.22);
		--toast-bg: rgba(252, 255, 255, 0.98);
		--toast-line: rgba(51, 151, 141, 0.4);
		--kbd-bg: rgba(241, 249, 250, 0.98);
		--kbd-line: rgba(72, 138, 135, 0.26);
		--kbd-text: #246c65;
		--backtop-bg: rgba(250, 255, 255, 0.95);
		--backtop-line: rgba(51, 151, 141, 0.45);
		--hot-card-border: rgba(229, 128, 85, 0.45);
		--hot-card-grad-a: rgba(255, 238, 223, 0.92);
		--hot-card-grad-b: rgba(255, 247, 237, 0.92);
		--hot-card-shadow: rgba(216, 129, 92, 0.16);
		--hot-card-border-hover: rgba(216, 115, 75, 0.58);
		--hot-card-shadow-hover: rgba(216, 115, 75, 0.22);
		--hero-text-mobile: #18464c;
		--hero-gradient-a: #184e56;
		--hero-gradient-b: #2d7a72;
		--hero-gradient-c: #3f8f84;
		--table-input-bg: rgba(255, 255, 255, 0.96);
		--table-input-line: rgba(72, 138, 135, 0.32);
		--table-wrap-bg: rgba(255, 255, 255, 0.95);
		--table-wrap-line: rgba(72, 138, 135, 0.28);
		--table-cell-line: rgba(72, 138, 135, 0.22);
		--table-head-bg: rgba(235, 248, 249, 0.98);
		--table-head-text: #1e6b64;
		--table-sticky-bg: rgba(255, 255, 255, 0.98);
		--table-row-hover: rgba(30, 164, 137, 0.09);
		--table-sticky-hover: rgba(220, 242, 240, 0.96);
	}
}

* {
	box-sizing: border-box;
	-webkit-tap-highlight-color: transparent;
}

html,
body {
	margin: 0;
	padding: 0;
}

body {
	font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Source Han Sans SC', sans-serif;
	color: var(--text);
	background:
		radial-gradient(1200px 700px at 8% -10%, rgba(83, 189, 210, 0.32), transparent 60%),
		radial-gradient(1000px 700px at 95% 105%, rgba(64, 190, 137, 0.24), transparent 60%),
		linear-gradient(132deg, var(--bg) 0%, var(--bg-2) 45%, var(--bg-3) 100%);
	min-height: 100vh;
}

.orb-layer {
	position: fixed;
	inset: 0;
	pointer-events: none;
	z-index: -1;
	overflow: hidden;
}

.orb {
	position: absolute;
	border-radius: 999px;
	filter: blur(72px);
	opacity: 0.52;
	animation: drift 18s ease-in-out infinite;
}

.orb-a {
	width: 360px;
	height: 360px;
	background: rgba(95, 225, 203, 0.52);
	top: -100px;
	left: -80px;
}

.orb-b {
	width: 420px;
	height: 420px;
	background: rgba(53, 201, 168, 0.32);
	bottom: -140px;
	right: -100px;
	animation-delay: 8s;
}

.orb-c {
	width: 300px;
	height: 300px;
	background: rgba(246, 185, 60, 0.2);
	top: 48%;
	left: 42%;
	animation-delay: 3s;
}

@keyframes drift {
	0%,
	100% {
		transform: translate(0, 0) scale(1);
	}
	33% {
		transform: translate(18px, -28px) scale(1.08);
	}
	66% {
		transform: translate(-24px, 16px) scale(0.92);
	}
}

.site-shell {
	width: min(1180px, 94vw);
	margin: 26px auto 46px;
}

.top-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	align-items: center;
	justify-content: space-between;
	background: var(--nav-bg);
	border: 1px solid var(--line);
	backdrop-filter: blur(10px);
	border-radius: 999px;
	padding: 10px 14px;
	position: sticky;
	top: var(--nav-offset);
	z-index: 30;
	transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.top-nav.scrolled {
	border-color: var(--line-strong);
	box-shadow: 0 12px 32px var(--shadow-strong);
}

.brand {
	font-weight: 800;
	letter-spacing: 0.8px;
	color: var(--text);
	text-decoration: none;
}

.nav-links {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}

.nav-links a {
	text-decoration: none;
	color: var(--text-dim);
	font-size: 0.94rem;
	padding: 8px 12px;
	border-radius: 999px;
	transition: 0.22s ease;
	touch-action: manipulation;
	user-select: none;
}

.nav-links a:hover,
.nav-links a.active {
	color: #042921;
	background: linear-gradient(90deg, #5bf0c5, #54dbb8);
}

.nav-links a:focus {
	outline: none;
}

.nav-links a:focus-visible {
	outline: 2px solid rgba(114, 242, 206, 0.75);
	outline-offset: 2px;
}

.hero-panel,
.panel {
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	backdrop-filter: blur(10px);
}

.hero-panel {
	margin-top: 18px;
	padding: 56px 34px;
	display: grid;
	gap: 20px;
	box-shadow: 0 20px 60px rgba(2, 13, 17, 0.45);
	overflow: hidden;
	position: relative;
}

.hero-panel::after {
	content: '';
	position: absolute;
	inset: -40% auto auto -20%;
	width: 380px;
	height: 380px;
	background: radial-gradient(circle at 50% 50%, rgba(77, 219, 186, 0.22), transparent 70%);
	pointer-events: none;
}

.hero-title {
	margin: 0;
	font-size: clamp(2rem, 4vw, 3.6rem);
	line-height: 1.06;
	background: linear-gradient(108deg, var(--hero-gradient-a) 0%, var(--hero-gradient-b) 42%, var(--hero-gradient-c) 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}

.mobile-break {
	display: none;
}

.hero-kicker {
	color: var(--brand);
	font-weight: 700;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	font-size: 0.84rem;
}

.hero-desc {
	margin: 0;
	color: var(--text-dim);
	max-width: 780px;
}

.btn-row {
	display: flex;
	gap: 10px;
	flex-wrap: wrap;
}

.btn {
	border: 1px solid var(--line);
	text-decoration: none;
	color: var(--text);
	padding: 10px 16px;
	border-radius: 999px;
	transition: 0.22s ease;
	font-weight: 600;
	cursor: pointer;
	background: transparent;
	position: relative;
	overflow: hidden;
	touch-action: manipulation;
}

.btn:hover {
	transform: translateY(-2px);
}

.btn::before {
	content: '';
	position: absolute;
	top: 0;
	left: -120%;
	width: 100%;
	height: 100%;
	background: linear-gradient(110deg, transparent, rgba(255, 255, 255, 0.16), transparent);
	transition: left 0.45s ease;
}

.btn:hover::before {
	left: 120%;
}

.btn-primary {
	color: #03231b;
	border-color: #57f2c4;
	background: linear-gradient(90deg, #6df6cf, #4cdab3);
}

.grid {
	margin-top: 18px;
	display: grid;
	grid-template-columns: repeat(12, 1fr);
	gap: 14px;
}

.card {
	grid-column: span 4;
	padding: 18px;
	border-radius: 14px;
	background: var(--surface-strong);
	border: 1px solid var(--line);
	text-decoration: none;
	color: inherit;
	transition: 0.22s ease;
	box-shadow: 0 8px 20px var(--shadow-soft);
}

.card:hover {
	transform: translateY(-4px);
	border-color: rgba(116, 249, 220, 0.48);
	box-shadow: 0 14px 28px var(--shadow-soft);
}

.card p {
	color: var(--text-dim);
	line-height: 1.6;
}

.hot-card {
	border-color: var(--hot-card-border);
	background:
		linear-gradient(145deg, var(--hot-card-grad-a), var(--hot-card-grad-b)),
		var(--surface-strong);
	box-shadow: 0 8px 18px var(--hot-card-shadow);
}

.hot-card:hover {
	border-color: var(--hot-card-border-hover);
	box-shadow: 0 12px 24px var(--hot-card-shadow-hover);
}

.hot-chip {
	color: #3e1108;
	background: linear-gradient(90deg, #ffbe7d, #ffa56f);
}

.stats-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 10px;
	margin-top: 8px;
}

.stat-item {
	background: var(--stat-bg);
	border: 1px solid var(--stat-line);
	border-radius: 12px;
	padding: 12px;
	text-align: center;
}

.stat-item strong {
	display: block;
	font-size: 1.15rem;
	color: var(--stat-strong);
}

.stat-item span {
	font-size: 0.82rem;
	color: var(--text-dim);
}

.feature-list {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 10px;
	padding: 0;
	margin: 12px 0 0;
	list-style: none;
}

.feature-list li {
	background: var(--feature-bg);
	border: 1px solid var(--feature-line);
	padding: 10px 12px;
	border-radius: 10px;
	line-height: 1.5;
}

.card h3 {
	margin: 6px 0;
}

.chip {
	display: inline-flex;
	font-size: 0.74rem;
	color: #0b2d24;
	background: linear-gradient(90deg, #8ef9d7, #66dfbe);
	border-radius: 999px;
	padding: 3px 8px;
	font-weight: 700;
}

.mono {
	font-family: 'SFMono-Regular', 'Cascadia Mono', 'Consolas', 'Liberation Mono', monospace;
}

.page-layout {
	margin-top: 18px;
	display: grid;
	grid-template-columns: 260px 1fr;
	gap: 14px;
}


.toc {
	position: sticky;
	top: 86px;
	align-self: start;
	max-height: calc(100vh - 110px);
	overflow: auto;
	padding: 16px;
}

.toc h3 {
	margin-top: 0;
	font-size: 1rem;
}

.toc a {
	display: block;
	margin: 8px 0;
	text-decoration: none;
	color: var(--text-dim);
	font-size: 0.92rem;
	padding-left: 8px;
	border-left: 2px solid transparent;
}

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

.toc a.active,
.mobile-toc-links a.active {
	color: var(--toc-active-text);
	border-left-color: var(--toc-active-border);
	background: var(--toc-active-bg);
	border-radius: 6px;
}

.mobile-toc {
	display: none;
	margin-top: 12px;
	padding: 10px 12px;
	position: sticky;
	top: calc(var(--nav-offset) + var(--nav-height) + 8px);
	z-index: 26;
	background: var(--mobile-toc-bg);
}

.mobile-toc summary {
	list-style: none;
	cursor: pointer;
	font-weight: 700;
	color: var(--mobile-toc-summary-text);
	user-select: none;
}

.mobile-toc summary::-webkit-details-marker {
	display: none;
}

.mobile-toc summary::after {
	content: '▾';
	float: right;
	color: var(--text-dim);
	transition: transform 0.2s ease;
}

.mobile-toc[open] summary::after {
	transform: rotate(180deg);
}

.mobile-toc-links {
	display: grid;
	gap: 8px;
	margin-top: 10px;
	padding-top: 10px;
	border-top: 1px solid rgba(130, 198, 186, 0.24);
}

.mobile-toc-links a {
	text-decoration: none;
	color: var(--text-dim);
	font-size: 0.94rem;
	padding: 6px 4px;
	border-radius: 8px;
}

.mobile-toc-links a:hover {
	background: var(--mobile-toc-hover-bg);
	color: var(--text);
}

.content {
	padding: 24px;
}

.content h1 {
	margin-top: 0;
	margin-bottom: 10px;
}

.section-card {
	background: var(--section-bg);
	border: 1px solid var(--section-line);
	border-radius: 12px;
	padding: 14px;
	margin: 12px 0;
	transition: border-color 0.2s ease;
}

.section-card:hover {
	border-color: var(--section-line-hover);
}

.warn-box {
	background: rgba(240, 79, 95, 0.12);
	border: 1px solid rgba(240, 79, 95, 0.55);
	border-radius: 12px;
	padding: 12px 14px;
}

.gold-box {
	background: rgba(246, 185, 60, 0.11);
	border: 1px solid rgba(246, 185, 60, 0.5);
	border-radius: 12px;
	padding: 12px 14px;
}

.cmd-item {
	display: flex;
	justify-content: space-between;
	gap: 16px;
	align-items: center;
	border: 1px solid var(--cmd-line);
	border-radius: 10px;
	padding: 11px 12px;
	margin: 8px 0;
	background: var(--cmd-bg);
	cursor: pointer;
}

.cmd-item:hover {
	border-color: var(--cmd-line-hover);
	transform: translateY(-1px);
}

.cmd-item .left {
	color: var(--cmd-left-text);
	font-family: 'SFMono-Regular', 'Cascadia Mono', 'Consolas', 'Liberation Mono', monospace;
	font-size: 0.91rem;
}

.cmd-item .right {
	color: var(--text-dim);
	font-size: 0.88rem;
}

.reveal {
	opacity: 0;
	transform: translateY(14px);
	transition: 0.55s ease;
	transition-delay: var(--reveal-delay, 0ms);
}

.reveal.in-view {
	opacity: 1;
	transform: translateY(0);
}

.toast {
	position: fixed;
	left: 50%;
	bottom: 26px;
	transform: translateX(-50%) translateY(16px);
	opacity: 0;
	transition: 0.22s ease;
	background: var(--toast-bg);
	border: 1px solid var(--toast-line);
	color: var(--text);
	border-radius: 999px;
	padding: 10px 16px;
	font-size: 0.9rem;
	z-index: 50;
}

.toast.show {
	opacity: 1;
	transform: translateX(-50%) translateY(0);
}

.footer {
	color: var(--text-dim);
	font-size: 0.85rem;
	margin: 18px 0 0;
}

.kbd {
	font-family: 'SFMono-Regular', 'Cascadia Mono', 'Consolas', 'Liberation Mono', monospace;
	font-size: 0.82rem;
	padding: 2px 6px;
	border-radius: 6px;
	background: var(--kbd-bg);
	border: 1px solid var(--kbd-line);
	color: var(--kbd-text);
}

.back-to-top {
	position: fixed;
	right: 16px;
	bottom: 18px;
	z-index: 45;
	border: 1px solid var(--backtop-line);
	background: var(--backtop-bg);
	color: var(--text);
	width: 40px;
	height: 40px;
	border-radius: 999px;
	font-size: 18px;
	cursor: pointer;
	opacity: 0;
	pointer-events: none;
	transform: translateY(10px);
	transition: 0.2s ease;
}

.back-to-top.visible {
	opacity: 1;
	pointer-events: auto;
	transform: translateY(0);
}

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

	.toc {
		display: none;
	}

	.mobile-toc {
		display: block;
	}

	.card {
		grid-column: span 6;
	}

	.stats-grid {
		grid-template-columns: repeat(2, 1fr);
	}

	.feature-list {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 640px) {
	.site-shell {
		width: min(96vw, 96vw);
		margin-top: 14px;
	}

	.top-nav {
		border-radius: 18px;
		padding: 10px 12px;
		gap: 8px;
		align-items: stretch;
	}

	.brand {
		font-size: 0.92rem;
	}

	.nav-links {
		width: 100%;
		display: grid;
		grid-template-columns: repeat(4, minmax(0, 1fr));
		gap: 6px;
	}

	.nav-links a {
		text-align: center;
		padding: 8px 4px;
		font-size: 0.88rem;
	}

	.hero-panel {
		padding: 20px 14px;
	}

	.hero-kicker {
		font-size: 0.76rem;
		letter-spacing: 0.08em;
	}

	.hero-title {
		font-size: clamp(1.34rem, 6.8vw, 1.8rem);
		line-height: 1.3;
		letter-spacing: 0;
		word-break: normal;
		overflow-wrap: break-word;
		background: none;
		-webkit-background-clip: initial;
		-webkit-text-fill-color: var(--hero-text-mobile);
		color: var(--hero-text-mobile);
	}

	.hero-title .mobile-break {
		display: block;
	}

	.hero-desc {
		font-size: 0.98rem;
		line-height: 1.62;
	}

	.btn-row .btn {
		width: 100%;
		justify-content: center;
		text-align: center;
	}

	.content {
		padding: 16px;
	}

	.card {
		grid-column: span 12;
		padding: 16px;
	}

	.cmd-item {
		flex-direction: column;
		align-items: flex-start;
		gap: 6px;
	}

	.stats-grid {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 380px) {
	.hero-title {
		font-size: 1.22rem;
		line-height: 1.34;
	}

	.hero-desc {
		font-size: 0.94rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	* {
		animation: none !important;
		transition-duration: 0.01ms !important;
		scroll-behavior: auto !important;
	}

	.reveal {
		opacity: 1;
		transform: none;
	}
}