:root {
  --bg:           #17191b;
  --text:         #f2f2f4;
  --text-dim:     #c8c8ce;
  --text-muted:   #8a8a92;
  --card-bg:      rgba(255,255,255,0.04);
  --border:       rgba(60, 70, 85, 0.24);
  --accent:       #3a4754;
  --accent-hover: #4a5764;
  --radius-sm:    4px;
  --radius-md:    6px;
  --shadow:       0 2px 12px rgba(0,0,0,0.35);
  --tr:           0.14s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.52;
  font-weight: 350;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.canvas {
  min-height: 100vh;
  padding: 9vh 5.5vw 14vh;
}

.exhibit-label {
  position: fixed;
  top: 6vh;
  left: 5vw;
  z-index: 10;
}

.logo {
  margin-bottom: 1.3rem;
  opacity: 0.93;
}

.status {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

main.exhibit-content {
  margin-left: 22vw;
  max-width: 900px;
}

@media (max-width: 1100px) {
  main.exhibit-content { margin-left: 12vw; }
}

@media (max-width: 800px) {
  main.exhibit-content { margin-left: 6vw; }
}

@media (max-width: 640px) {
  main.exhibit-content { margin-left: 4vw; }
  .canvas { padding: 14vh 6vw 20vh; }
}

.artifact {
  margin-bottom: 20vh;
  padding: 4vh 0;
}

.artifact h1 {
  font-size: clamp(4rem, 11vw, 10rem);
  font-weight: 100;
  letter-spacing: -0.045em;
  line-height: 0.87;
  color: white;
}

.artifact h2 {
  font-size: 2.1rem;
  font-weight: 300;
  margin: 0 0 1.8rem;
  color: #e8e8ec;
}

.subtitle {
  font-size: 1.4rem;
  opacity: 0.74;
  margin-bottom: 3rem;
}

figure {
  margin: 2.5rem 0 1rem;
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
}

figure img {
  opacity: 0.975;
}

figcaption {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 1.2rem 1.5rem;
  background: rgba(0,0,0,0.18);
  border-top: 1px solid var(--border);
}

.mirror-list {
  display: grid;
  gap: 1.9rem;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
}

.mirror-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.8rem;
}

.mirror-item:hover {
  border-color: var(--accent-hover);
  background: rgba(58,71,84,0.09);
}

.mirror-label {
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.mirror-item a {
  color: #d4d4de;
  text-decoration: none;
  font-size: 1.06rem;
  word-break: break-all;
  line-height: 1.42;
}

.mirror-item a:hover {
  color: white;
}

.mirror-note {
  margin-top: 1.6rem;
  font-size: 0.92rem;
  color: #b4b4bc;
  font-style: italic;
}

.features-list,
.steps,
.faq-list dt {
  margin: 1.8rem 0;
}

.features-list li,
.steps li {
  margin-bottom: 1.2rem;
  font-size: 1.06rem;
}

.steps {
  counter-reset: step;
  padding-left: 1.8rem;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2.4rem;
  margin-bottom: 1.5rem;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  font-size: 1.6rem;
  font-weight: 600;
  color: white;
  opacity: 0.38;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.4rem;
  margin: 2rem 0;
}

.stats-grid div {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.3rem;
  font-size: 1.02rem;
}

.warning {
  background: rgba(130, 30, 30, 0.09);
  border-left: 4px solid #a53030;
  padding: 1.3rem 1.6rem;
  margin: 2.2rem 0;
  border-radius: var(--radius-sm);
  color: #ffdddd;
}

.seo-block {
  margin: 2.2rem 0;
  padding: 1.5rem;
  background: rgba(255,255,255,0.028);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1.06rem;
}

.exhibit-meta {
  margin-top: 24vh;
  text-align: center;
  font-size: 0.84rem;
  color: #64646c;
  line-height: 1.6;
}

a {
  transition: color 0.14s ease;
}

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