:root {
	--fg: #16161a;
	--fg-soft: #5c5c63;
	--fg-faint: #9b9ba1;
	--bg: #fbfbfa;
	--card: #ffffff;
	--line: #e6e6e2;
	--accent: #2f6f4e;
	--accent-soft: #e7f0ea;
	--warn: #9a6b12;
	--danger: #a8322c;
	--stone-black: #1c1c1e;
	--stone-white: #f7f7f5;
	color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
	:root {
		--fg: #ececea;
		--fg-soft: #9c9ca3;
		--fg-faint: #6a6a71;
		--bg: #111110;
		--card: #17171a;
		--line: #262624;
		--accent: #6fbf90;
		--accent-soft: #17301f;
		--warn: #d8a94a;
		--danger: #e0776f;
		--stone-black: #0b0b0c;
		--stone-white: #eceae6;
	}
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font-family:
		-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
		"Microsoft YaHei", "Noto Sans SC", sans-serif;
	font-size: 15px;
	line-height: 1.7;
	letter-spacing: 0.01em;
	-webkit-font-smoothing: antialiased;
}

.wrap {
	max-width: 940px;
	margin: 0 auto;
	padding: 0 20px;
}

header {
	padding: 40px 0 28px;
	border-bottom: 1px solid var(--line);
	margin-bottom: 32px;
}

.mark {
	font-size: 11.5px;
	font-weight: 600;
	letter-spacing: 0.08em;
	color: var(--fg-faint);
	text-decoration: none;
}

h1 {
	margin: 18px 0 10px;
	font-size: clamp(24px, 4vw, 30px);
	letter-spacing: -0.02em;
	font-weight: 600;
}

.lede {
	margin: 0;
	max-width: 62em;
	color: var(--fg-soft);
}

/* ---------- layout ---------- */

main {
	display: grid;
	grid-template-columns: minmax(0, 396px) minmax(0, 1fr);
	gap: 32px;
	align-items: start;
	padding-bottom: 64px;
}

@media (max-width: 820px) {
	main {
		grid-template-columns: 1fr;
	}
}

/* ---------- board ---------- */

canvas {
	display: block;
	width: 100%;
	height: auto;
	max-width: 396px;
	border: 1px solid var(--line);
	border-radius: 10px;
	background: var(--card);
	cursor: pointer;
	touch-action: manipulation;
}

canvas.waiting {
	cursor: default;
}

.board-legend {
	margin: 12px 0 0;
	font-size: 12.5px;
	line-height: 1.65;
	color: var(--fg-faint);
}

.board-legend b {
	color: var(--fg-soft);
	font-weight: 600;
}

.board-foot {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	margin-top: 14px;
	font-size: 13.5px;
	color: var(--fg-soft);
}

button {
	font: inherit;
	font-size: 13.5px;
	padding: 7px 14px;
	border-radius: 8px;
	border: 1px solid var(--line);
	background: var(--card);
	color: var(--fg);
	cursor: pointer;
	transition: border-color 140ms ease;
}

button:hover {
	border-color: var(--fg-faint);
}

/* ---------- panel ---------- */

.panel {
	display: grid;
	gap: 16px;
}

.card {
	border: 1px solid var(--line);
	border-radius: 10px;
	background: var(--card);
	padding: 16px 18px;
}

.card-head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 10px;
	font-size: 12.5px;
	font-weight: 600;
	letter-spacing: 0.04em;
	color: var(--fg-faint);
	text-transform: uppercase;
	margin-bottom: 14px;
}

.hint {
	font-weight: 400;
	letter-spacing: 0;
	text-transform: none;
	color: var(--fg-faint);
}

/* card-head 里的那一行小字说明 */
.card-head em {
	font-style: normal;
	font-weight: 400;
	letter-spacing: 0;
	text-transform: none;
	color: var(--fg-faint);
	margin-left: 8px;
}

.picked {
	grid-column: 2 / 4;
	font-size: 12.5px;
	color: var(--accent);
	margin-top: -4px;
}

.empty {
	margin: 0;
	color: var(--fg-faint);
	font-size: 14px;
}

/* probability bars */

.bars ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	gap: 10px;
}

.bars li {
	display: grid;
	grid-template-columns: 78px 1fr 56px;
	align-items: center;
	gap: 10px;
	font-size: 14px;
}

.bars .pt {
	font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
	font-weight: 600;
	white-space: nowrap;
}

.bars .track {
	height: 6px;
	border-radius: 999px;
	background: color-mix(in oklab, var(--line) 70%, transparent);
	overflow: hidden;
}

.bars .fill {
	height: 100%;
	border-radius: 999px;
	background: var(--accent);
	transition: width 220ms ease;
}

.bars li.top .pt {
	color: var(--accent);
}

.bars .pct {
	text-align: right;
	font-variant-numeric: tabular-nums;
	color: var(--fg-soft);
	font-size: 13px;
}

.bars .note {
	grid-column: 2 / 4;
	font-size: 12.5px;
	color: var(--fg-faint);
	margin-top: -4px;
}

/* verdict */

.verdict .line {
	display: flex;
	align-items: baseline;
	gap: 10px;
	flex-wrap: wrap;
	margin-bottom: 8px;
}

.badge {
	font-size: 12.5px;
	padding: 2px 9px;
	border-radius: 999px;
	border: 1px solid var(--line);
	color: var(--fg-soft);
}

.badge.good {
	color: var(--accent);
	border-color: var(--accent);
	background: var(--accent-soft);
}

.badge.bad {
	color: var(--danger);
	border-color: var(--danger);
}

.badge.warn {
	color: var(--warn);
	border-color: var(--warn);
}

.verdict p {
	margin: 0;
	font-size: 14px;
	color: var(--fg-soft);
}

/* meta */

.meta {
	margin: 0;
	display: grid;
	gap: 7px;
	font-size: 13.5px;
}

.meta div {
	display: flex;
	justify-content: space-between;
	gap: 12px;
}

.meta dt {
	color: var(--fg-faint);
}

.meta dd {
	margin: 0;
	font-variant-numeric: tabular-nums;
	font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.foot-note {
	margin: 12px 0 0;
	font-size: 12.5px;
	color: var(--fg-faint);
	line-height: 1.65;
}

.error {
	margin: 0;
	padding: 12px 14px;
	border-radius: 8px;
	border: 1px solid var(--danger);
	color: var(--danger);
	font-size: 13.5px;
	background: color-mix(in oklab, var(--danger) 8%, transparent);
}

::selection {
	background: var(--fg);
	color: var(--bg);
}

@media (prefers-reduced-motion: reduce) {
	* {
		transition: none !important;
	}
}
/* ---------- 多 demo 导航 ---------- */

.demo-nav {
	display: flex;
	gap: 18px;
	margin: 16px 0 0;
}

.demo-nav a {
	font-size: 13.5px;
	color: var(--fg-faint);
	text-decoration: none;
	padding-bottom: 2px;
	border-bottom: 2px solid transparent;
	transition: color 140ms ease, border-color 140ms ease;
}

.demo-nav a:hover {
	color: var(--fg);
}

.demo-nav a.active {
	color: var(--fg);
	border-color: var(--accent);
}

/* ---------- 21 点 ---------- */

.table {
	border: 1px solid var(--line);
	border-radius: 10px;
	background: var(--card);
	padding: 18px 18px 8px;
}

.hand-block + .hand-block {
	margin-top: 22px;
	padding-top: 18px;
	border-top: 1px solid var(--line);
}

.hand-head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	font-size: 12.5px;
	color: var(--fg-faint);
	letter-spacing: 0.04em;
	text-transform: uppercase;
	margin-bottom: 12px;
}

.hand-total {
	font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
	text-transform: none;
	letter-spacing: 0;
	color: var(--fg-soft);
}

.hand {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
	min-height: 74px;
	padding-bottom: 14px;
}

.pcard {
	width: 52px;
	height: 74px;
	border-radius: 8px;
	border: 1px solid var(--line);
	background: var(--card);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 2px;
	font-variant-numeric: tabular-nums;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.pcard .rank {
	font-size: 20px;
	font-weight: 600;
	line-height: 1;
}

.pcard .suit {
	font-size: 15px;
	line-height: 1;
	color: var(--fg-soft);
}

.pcard.red .suit,
.pcard.red .rank {
	color: var(--danger);
}

.pcard.hidden-card {
	border-style: dashed;
	color: var(--fg-faint);
	font-size: 20px;
	background: color-mix(in oklab, var(--line) 30%, transparent);
}

.actions {
	display: flex;
	gap: 10px;
	margin-top: 16px;
	flex-wrap: wrap;
}

.actions button {
	min-width: 92px;
	padding: 10px 18px;
	font-size: 14.5px;
}

.actions button.primary {
	border-color: var(--accent);
	color: var(--accent);
}

.actions button:disabled {
	opacity: 0.45;
	cursor: default;
}

.round-result {
	padding: 14px 4px 12px;
	font-size: 15px;
	color: var(--fg);
}