:root {
	--bg: #f7f8fa;
	--card: #ffffff;
	--ink: #12233f;
	--muted: #4a5568;
	--line: #d9dee7;
	--accent: #c9731f;
	--danger: #b42318;
	--button-bg: #12233f;
	--button-ink: #ffffff;
	--code-bg: #f1f3f7;
	color-scheme: light;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #0c1729;
		--card: #12233f;
		--ink: #f4f6fa;
		--muted: #c3cbd9;
		--line: #2c3d5c;
		--accent: #f0a94b;
		--danger: #ff8a7a;
		--button-bg: #f4f6fa;
		--button-ink: #12233f;
		--code-bg: #0c1729;
		color-scheme: dark;
	}
}

* {
	box-sizing: border-box;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--ink);
	font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

main {
	max-width: 480px;
	margin: 0 auto;
	padding: 40px 16px 64px;
}

.brand {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 24px;
	font-size: 22px;
	letter-spacing: -0.4px;
}

.brand svg {
	width: 32px;
	height: 32px;
}

.brand b {
	font-weight: 800;
}

.card {
	background: var(--card);
	border: 1px solid var(--line);
	border-radius: 12px;
	padding: 24px;
}

h1 {
	font-size: 22px;
	line-height: 1.3;
	margin: 0 0 8px;
}

h2 {
	font-size: 17px;
	margin: 24px 0 6px;
}

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

p {
	margin: 0 0 16px;
	color: var(--muted);
}

p strong {
	color: var(--ink);
}

label {
	display: block;
	font-weight: 600;
	margin: 16px 0 6px;
}

input[type="password"],
input[type="text"] {
	width: 100%;
	padding: 12px;
	font: inherit;
	color: var(--ink);
	background: var(--bg);
	border: 1px solid var(--line);
	border-radius: 8px;
}

input:focus,
button:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
}

.check {
	display: flex;
	gap: 10px;
	align-items: flex-start;
	font-weight: 400;
}

.check input {
	margin-top: 5px;
}

.actions {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-top: 24px;
}

button {
	min-height: 44px;
	padding: 10px 20px;
	font: inherit;
	font-weight: 600;
	border-radius: 8px;
	border: 1px solid var(--button-bg);
	background: var(--button-bg);
	color: var(--button-ink);
	cursor: pointer;
}

button.secondary,
button.link {
	background: transparent;
	color: var(--ink);
	border-color: var(--line);
}

button.link {
	border: none;
	padding: 10px 0;
	text-decoration: underline;
}

button:disabled {
	opacity: 0.55;
	cursor: default;
}

.error {
	color: var(--danger);
	min-height: 1.5em;
	margin: 12px 0 0;
}

.code {
	font: 600 18px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
	letter-spacing: 1px;
	word-break: break-all;
	background: var(--code-bg);
	border: 1px dashed var(--line);
	border-radius: 8px;
	padding: 16px;
	margin: 8px 0 16px;
	user-select: all;
}

.note {
	font-size: 14px;
}

.mono {
	font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
	word-break: break-all;
}