.sd-shell {
	--sd-accent: #315f9d;
	max-width: 720px;
	margin: 0 auto;
	padding: 10px 10px 24px;
	color: var(--cg-ink);
	font-family: Inter, Arial, sans-serif;
	-webkit-tap-highlight-color: transparent;
}
.sd-shell * {
	box-sizing: border-box;
}
.sd-topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	margin-bottom: 8px;
}
.sd-stats,
.sd-actions {
	display: flex;
	align-items: center;
	gap: 6px;
	min-width: 0;
}
.sd-stat {
	padding: 5px 10px;
	border: 1px solid var(--cg-line);
	border-radius: 10px;
	background: var(--cg-panel);
	text-align: center;
}
.sd-stat span {
	display: block;
	color: var(--cg-muted);
	font-size: 9px;
	font-weight: 800;
	letter-spacing: 0.05em;
	text-transform: uppercase;
}
.sd-stat strong {
	display: block;
	margin-top: 2px;
	font-size: 17px;
	line-height: 1;
}
.sd-icon-btn,
.sd-new,
.sd-close,
.sd-seg-btn,
.sd-result-btn,
.sd-jump,
.sd-start {
	min-height: 44px;
	border: 1px solid var(--cg-line);
	border-radius: 10px;
	background: var(--cg-panel);
	color: var(--cg-ink);
	font: inherit;
	font-weight: 800;
	cursor: pointer;
	touch-action: manipulation;
}
.sd-icon-btn {
	width: 44px;
	display: inline-grid;
	place-items: center;
	padding: 0;
	font-size: 18px;
}
.sd-icon-btn svg {
	width: 21px;
	height: 21px;
}
.sd-new {
	padding: 0 14px;
	background: var(--cg-ink);
	border-color: var(--cg-ink);
	color: #fff;
	font-size: 0.92rem;
	white-space: nowrap;
}
.sd-statusbar {
	display: flex;
	justify-content: center;
	min-height: 26px;
	margin: 0 auto 8px;
	color: var(--cg-muted);
	font-size: 0.95rem;
	font-weight: 800;
	text-align: center;
}
.sd-stage {
	position: relative;
	width: min(100%, 720px);
	margin: 0 auto;
	border: 1px solid var(--cg-line);
	border-radius: 16px;
	overflow: hidden;
	background: #87ceeb;
	box-shadow: var(--cg-shadow);
}
.sd-canvas {
	display: block;
	width: 100%;
	touch-action: none;
	cursor: pointer;
}
.sd-canvas:focus-visible {
	outline: 3px solid rgba(49, 95, 157, 0.4);
	outline-offset: 2px;
}
.sd-start {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	padding: 0 34px;
	min-height: 52px;
	background: var(--cg-ink);
	border-color: var(--cg-ink);
	color: #fff;
	font-size: 1.1rem;
	border-radius: 999px;
	box-shadow: var(--cg-shadow);
}
.sd-controls {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 10px;
	margin-top: 10px;
	flex-wrap: wrap;
}
.sd-seg {
	display: inline-flex;
	padding: 3px;
	border: 1px solid var(--cg-line);
	border-radius: 12px;
	background: var(--cg-panel);
	gap: 3px;
}
.sd-seg-btn {
	padding: 0 14px;
	border: 1px solid transparent;
}
.sd-seg-btn[aria-pressed='true'] {
	background: var(--sd-accent);
	border-color: var(--sd-accent);
	color: #fff;
}
.sd-jump {
	padding: 0 22px;
	background: var(--cg-ink);
	border-color: var(--cg-ink);
	color: #fff;
	min-width: 110px;
}
.sd-hint {
	margin: 10px 0 0;
	color: var(--cg-muted);
	font-size: 0.85rem;
	text-align: center;
}
.sd-result {
	width: min(100%, 540px);
	margin: 10px auto 0;
	padding: 14px;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 4px;
	border: 1px solid var(--cg-line);
	border-radius: 14px;
	background: var(--cg-panel);
	text-align: center;
}
.sd-result[hidden] {
	display: none;
}
.sd-result strong {
	font-size: 1.25rem;
}
.sd-result span {
	color: var(--cg-muted);
	font-size: 0.88rem;
}
.sd-result-actions {
	width: 100%;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 8px;
	margin-top: 10px;
}
.sd-result-btn {
	padding: 0 12px;
}
.sd-primary {
	background: var(--cg-ink);
	border-color: var(--cg-ink);
	color: #fff;
}
.sd-overlay {
	position: fixed;
	inset: 0;
	z-index: 50;
	display: grid;
	place-items: center;
	padding: 18px;
	background: rgba(30, 37, 40, 0.32);
}
.sd-overlay[hidden] {
	display: none;
}
.sd-dialog {
	position: relative;
	width: min(100%, 460px);
	max-height: 84vh;
	overflow-y: auto;
	padding: 22px;
	border: 1px solid var(--cg-line);
	border-radius: 12px;
	background: var(--cg-panel);
}
.sd-dialog h2 {
	margin: 0 52px 12px 0;
	font-size: 23px;
}
.sd-dialog p,
.sd-dialog li {
	color: var(--cg-muted);
	line-height: 1.45;
}
.sd-close {
	position: absolute;
	top: 12px;
	right: 12px;
	width: 44px;
	padding: 0;
	font-size: 24px;
	line-height: 1;
}
.sd-icon-btn:focus-visible,
.sd-new:focus-visible,
.sd-close:focus-visible,
.sd-seg-btn:focus-visible,
.sd-result-btn:focus-visible,
.sd-jump:focus-visible,
.sd-start:focus-visible {
	outline: 3px solid rgba(49, 95, 157, 0.4);
	outline-offset: 2px;
}