:root {
	--color-primary: #3b82f6;
	--color-primary-hover: #2563eb;
	--color-primary-active: #1d4ed8;
	--color-primary-fg: #ffffff;
	--color-primary-soft: #dbeafe;

	--color-text: #1f2937;
	--color-text-muted: #6b7280;
	--color-text-inverse: #ffffff;

	--color-bg: #ffffff;
	--color-bg-subtle: #f5f5f7;
	--color-bg-muted: #ebebef;

	--color-border: #e5e7eb;
	--color-border-strong: #d1d5db;

	--color-success: #15803d;
	--color-success-soft: #dcfce7;
	--color-success-ink: #065f46;
	--color-warning: #b45309;
	--color-warning-soft: #fef3c7;
	--color-warning-ink: #92400e;
	--color-danger: #dc2626;
	--color-danger-soft: #fee2e2;
	--color-danger-ink: #991b1b;

	--color-focus: var(--color-primary);

	--space-0: 0;
	--space-1: 0.25rem;
	--space-2: 0.5rem;
	--space-3: 0.75rem;
	--space-4: 1rem;
	--space-5: 1.25rem;
	--space-6: 1.5rem;
	--space-8: 2rem;
	--space-10: 2.5rem;
	--space-12: 3rem;

	--radius-sm: 0.25rem;
	--radius-md: 0.5rem;
	--radius-lg: 0.75rem;
	--radius-full: 9999px;

	--shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
	--shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
	--shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.05);

	--transition-fast: 100ms ease-out;
	--transition-base: 150ms ease-out;

	--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
	margin: 0;
	padding: var(--space-6) var(--space-4) var(--space-12);
	background: #ffffff;
	color: var(--color-text);
	font-family: var(--font);
	font-size: clamp(15px, 1.5vw + 9px, 18px);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	min-height: 100vh;
}

.wrap { max-width: 46rem; margin: 0 auto; }

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

.head { text-align: center; margin: var(--space-2) 0 var(--space-6); }

.head h1 {
	margin: 0 0 var(--space-2);
	font-size: clamp(1.5rem, 3.2vw + 1rem, 2.25rem);
	font-weight: 700;
	letter-spacing: -.02em;
	line-height: 1.15;
	color: var(--color-text);
}

.head .sub {
	margin: 0 auto;
	max-width: 34rem;
	color: var(--color-text-muted);
	font-size: 1.02rem;
}

.card {
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-lg);
	box-shadow: var(--shadow-sm);
	padding: clamp(1.25rem, 3vw, 2.25rem);
	text-align: center;
}

.btn {
	appearance: none;
	border: 0;
	cursor: pointer;
	font: inherit;
	font-weight: 500;
	color: var(--color-primary-fg);
	background: var(--color-primary);
	padding: var(--space-1) var(--space-4);
	font-size: .9rem;
	border-radius: var(--radius-full);
	transition: background-color var(--transition-fast), transform var(--transition-fast);
	user-select: none;
	white-space: nowrap;
}
.btn:hover { background: var(--color-primary-hover); }
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.btn.running { background: var(--color-danger); }
.btn.running:hover { background: var(--color-danger); }
.btn[disabled] { opacity: .55; cursor: default; }

.phase {
	min-height: 1.5em;
	margin: var(--space-4) 0 var(--space-1);
	color: var(--color-text-muted);
	font-size: .9rem;
	font-weight: 500;
}
.phase .dot {
	display: inline-block; width: .5em; height: .5em; margin-right: .4em;
	border-radius: 50%; background: var(--color-primary);
	animation: pulse 1s infinite ease-in-out;
}
@keyframes pulse { 0%,100%{opacity:.3;transform:scale(.8)} 50%{opacity:1;transform:scale(1)} }

.gauges {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	align-items: flex-end;
	gap: clamp(.5rem, 2vw, 1.75rem);
	margin: var(--space-2) 0 var(--space-1);
}
.gauge { position: relative; width: var(--g, 9.5rem); }
.gauge.lead { --g: 13rem; }

.gauge .dial { position: relative; }
.gauge svg { display: block; width: 100%; height: auto; overflow: visible; }

.gauge .fill {
	transition: stroke-dashoffset var(--transition-base), stroke var(--transition-base);
}

.gauge .readout {
	position: absolute;
	left: 0; right: 0;
	top: 52%;
	transform: translateY(-40%);
	text-align: center;
	line-height: 1;
}
.gauge .num {
	display: block;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
	letter-spacing: -.02em;
	color: var(--color-text);
	font-size: 1.5rem;
}
.gauge.lead .num { font-size: 2.4rem; }
.gauge .unit { display: block; margin-top: .2em; color: var(--color-text-muted); font-size: .8rem; font-weight: 500; }

.gauge .name {
	margin-top: .15em;
	text-align: center;
	font-weight: 600;
	font-size: .98rem;
}
.gauge .gloss {
	margin-top: .15em;
	text-align: center;
	color: var(--color-text-muted);
	font-size: .78rem;
	font-weight: 500;
	line-height: 1.3;
}
.gauge .name .pill {
	display: inline-block; margin-left: .4em; padding: .1em .6em;
	border-radius: var(--radius-full); font-size: .72rem; font-weight: 700; vertical-align: middle;
	opacity: 0; transition: opacity var(--transition-base);
}
.gauge .name .pill.show { opacity: 1; }
.gauge .name .pill.good { background: var(--color-success-soft); color: var(--color-success-ink); }
.gauge .name .pill.ok   { background: var(--color-warning-soft); color: var(--color-warning-ink); }
.gauge .name .pill.bad  { background: var(--color-danger-soft);  color: var(--color-danger-ink); }

.ip {
	margin: var(--space-5) 0 0;
	color: var(--color-text-muted);
	font-size: .9rem;
}
.ip b { color: var(--color-text); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }

.verdict {
	margin: var(--space-5) 0 var(--space-1);
	text-align: left;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-lg);
	padding: var(--space-4) var(--space-5);
	display: none;
	gap: .85em;
	align-items: flex-start;
	animation: rise .4s ease;
}
.verdict.show { display: flex; }
@keyframes rise { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:none} }

.verdict .vicon {
	flex: 0 0 auto; width: 2.4em; height: 2.4em; border-radius: 50%;
	display: grid; place-items: center; font-size: 1.1rem; color: #fff; font-weight: 700;
}
.verdict .vbody { flex: 1; }
.verdict .vtitle { margin: .1em 0 .25em; font-size: 1.15rem; font-weight: 700; }
.verdict .vtext  { margin: 0 0 .5em; }
.verdict .vsteps { margin: .25em 0 0; padding-left: 1.15em; }
.verdict .vsteps li { margin: .15em 0; }

.verdict.good { background: var(--color-success-soft); border-color: var(--color-success-soft); color: var(--color-success-ink); }
.verdict.good .vicon { background: var(--color-success); }
.verdict.ok   { background: var(--color-warning-soft); border-color: var(--color-warning-soft); color: var(--color-warning-ink); }
.verdict.ok   .vicon { background: var(--color-warning); }
.verdict.bad  { background: var(--color-danger-soft);  border-color: var(--color-danger-soft);  color: var(--color-danger-ink); }
.verdict.bad  .vicon { background: var(--color-danger); }
.verdict.fail { background: var(--color-bg-subtle); border-color: var(--color-border); color: var(--color-text-muted); }
.verdict.fail .vicon { background: var(--color-text-muted); }

.info { margin-top: var(--space-10); }
.info > .lead {
	text-align: center; color: var(--color-text-muted); max-width: 38rem; margin: 0 auto var(--space-6);
}

.acc {
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-lg);
	margin: var(--space-3) 0;
	overflow: hidden;
}
.acc-head {
	width: 100%; text-align: left; cursor: pointer;
	display: flex; align-items: center; gap: .75em;
	background: none; border: 0; font: inherit; color: var(--color-text);
	padding: var(--space-4) var(--space-5); font-weight: 600; font-size: 1rem;
}
.acc-head:hover { background: var(--color-bg-subtle); }
.acc-head .ah-ico {
	flex: 0 0 auto; width: 2em; height: 2em; border-radius: var(--radius-md);
	display: grid; place-items: center; background: var(--color-primary-soft); color: var(--color-primary);
}
.acc-head .ah-ico svg { width: 1.1em; height: 1.1em; }
.acc-head .ah-txt { flex: 1; }
.acc-head .chev {
	flex: 0 0 auto; color: var(--color-text-muted); transition: transform var(--transition-base);
}
.acc-head .chev svg { width: 1.25em; height: 1.25em; display: block; }
.acc.open .acc-head .chev { transform: rotate(180deg); }

.acc-body {
	display: grid; grid-template-rows: 0fr;
	transition: grid-template-rows var(--transition-base);
}
.acc.open .acc-body { grid-template-rows: 1fr; }
.acc-body > .inner { overflow: hidden; }
.acc-body .pad { padding: var(--space-5); color: var(--color-text); font-size: .95rem; }
.acc-body p { margin: 0 0 .8em; }

.scale { margin: var(--space-3) 0 0; display: grid; gap: .4em; }
.scale .row {
	display: grid; grid-template-columns: auto 1fr; gap: .75em; align-items: baseline;
	padding: .55em .7em; border-radius: var(--radius-md); background: var(--color-bg-subtle);
}
.scale .tag {
	font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap;
	padding: .05em .5em; border-radius: var(--radius-sm); font-size: .85rem;
}
.scale .g { background: var(--color-success-soft); color: var(--color-success-ink); }
.scale .a { background: var(--color-warning-soft); color: var(--color-warning-ink); }
.scale .r { background: var(--color-danger-soft);  color: var(--color-danger-ink); }
.scale .txt { color: var(--color-text); }

.tips { margin: var(--space-3) 0 0; padding-left: 1.2em; }
.tips li { margin: .35em 0; }

.foot { text-align: center; margin-top: var(--space-10); }
.moc-badge {
	display: inline-flex; align-items: center; gap: .6em;
	text-decoration: none;
	padding: .5em 1em; border-radius: var(--radius-full);
	background: var(--color-bg); border: 1px solid var(--color-border);
	color: var(--color-text); font-size: .9rem; font-weight: 500;
}
.moc-badge:hover { border-color: var(--color-border); }
.moc-badge .logo {
	width: 1.4em; height: 1.4em; border-radius: var(--radius-sm);
	background: var(--color-primary); color: var(--color-primary-fg); font-weight: 700;
	display: grid; place-items: center; font-size: .85em;
}
.moc-badge b { color: var(--color-primary); font-weight: 700; }
.moc-badge .by { color: var(--color-text-muted); font-weight: 500; }

@media (max-width: 30rem) {
	.gauge { --g: 8rem; }
	.gauge.lead { --g: 11rem; }
	.verdict { flex-direction: column; }
	.verdict .vicon { width: 2em; height: 2em; }
}

@media (prefers-reduced-motion: reduce) {
	.phase .dot { animation: none; }
	.verdict { animation: none; }
	.gauge .fill { transition: none; }
	.acc-body { transition: none; }
	.btn, .acc-head .chev, .moc-badge { transition: none; }
}