:root {
  --bg: #ffffff;
  --text: #17191b;
  --text-light: #444;
  --text-lighter: #666;
  --accent: #17191b;
  --accent-hover: #313c48;
  --border: #e0e0e0;
  --border-light: #eaeaea;
  --bg-light: #f9f9f9;
  --bg-lighter: #fbfbfb;
  --shadow-sm: 0 2px 5px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --radius-sm: 3px;
  --radius-md: 4px;
  --transition: all 0.16s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 15.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.page-frame {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 18px;
}

.header {
  padding: 36px 0 52px;
  text-align: center;
  border-bottom: 1px solid var(--border-light);
}

.logo {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.evidence-label {
  position: absolute;
  top: -10px;
  left: 22px;
  z-index: 2;
  background: var(--bg);
  color: var(--text);
  font-size: 11.6px;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  padding: 3px 11px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.evidence-photo {
  width: 100%;
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-lighter);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.evidence-photo:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.evidence-caption {
  margin-top: 12px;
  font-size: 13.6px;
  color: var(--text-light);
  font-style: italic;
  line-height: 1.48;
  padding-left: 6px;
  border-left: 2px solid var(--border-light);
}

.intro-text h1 {
  font-size: 2.1rem;
  font-weight: 680;
  margin-bottom: 1.1rem;
  line-height: 1.22;
  letter-spacing: -0.3px;
}

.intro-text p {
  margin-bottom: 1rem;
  font-size: 1.03rem;
  color: #1f1f1f;
}

.divider {
  display: flex;
  align-items: center;
  margin: 3.5rem 0 2.8rem;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 50%, transparent);
}

.divider-text {
  padding: 0 2.2rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-lighter);
  letter-spacing: 1.35px;
  text-transform: uppercase;
  white-space: nowrap;
}

.mirror-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 1.4rem;
}

.mirror-item {
  background: var(--bg-light);
  padding: 1.05rem 1.3rem;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  font-family: ui-monospace, "SF Mono", Consolas, Menlo, monospace;
  font-size: 14.3px;
  line-height: 1.55;
  word-break: break-all;
  transition: var(--transition);
}

.mirror-item:hover {
  background: #f4f4f4;
  transform: translateX(3px);
  box-shadow: var(--shadow-sm);
}

.mirror-item a {
  color: var(--text);
  text-decoration: none;
}

.mirror-item a:hover {
  color: #fff;
  background: var(--accent-hover);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.mirror-note {
  margin-top: 1.3rem;
  font-size: 0.86rem;
  color: var(--text-lighter);
  font-style: italic;
}

.text-section {
  margin: 3.2rem 0;
}

.text-section h2 {
  font-size: 1.48rem;
  font-weight: 660;
  margin-bottom: 1.25rem;
  color: var(--text);
}

.text-section ul,
.text-section ol {
  margin-left: 1.6rem;
  margin-bottom: 1.4rem;
}

.text-section li {
  margin-bottom: 0.75rem;
  font-size: 1.02rem;
}

.rules li {
  color: #a83232;
  font-weight: 540;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.4rem;
  margin: 3.2rem 0 2.6rem;
  padding: 1.6rem;
  background: var(--bg-lighter);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}

.stat-item {
  text-align: center;
  padding: 0.8rem;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-lighter);
  text-transform: uppercase;
  letter-spacing: 0.9px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.12rem;
  font-weight: 680;
}

.stat-value.online {
  color: #2a6e2f;
}

.right-aligned {
  display: flex;
  justify-content: flex-end;
}

.right-aligned .evidence-photo {
  max-width: 480px;
  border-radius: var(--radius-md);
}

.footer {
  margin-top: 5.5rem;
  padding: 2.2rem 0 3rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.85rem;
  color: var(--text-lighter);
  text-align: center;
  line-height: 1.8;
}

.footer div {
  margin-bottom: 0.6rem;
}

/* Performance optimizations */
img {
  loading: lazy;
  decoding: async;
  object-fit: contain;
}

a {
  text-decoration-skip-ink: auto;
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
}