@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@keyframes marquee { 0% { transform: translateX(100%); } 100% { transform: translateX(-100%); } }
@keyframes rainbow { 0% { filter: hue-rotate(0deg); } 100% { filter: hue-rotate(360deg); } }

body {
  margin: 0;
  background-color: #000033;
  background-image:
    radial-gradient(circle, #ffff00 1px, transparent 1px),
    radial-gradient(circle, #00ffff 1px, transparent 1px);
  background-size: 40px 40px, 60px 60px;
  background-position: 0 0, 20px 30px;
  color: #00ff00;
  font-family: "MS Pゴシック", "Comic Sans MS", sans-serif;
}

.wrapper {
  max-width: 760px;
  margin: 20px auto;
  background: #000000;
  border: 4px double #ffff00;
  padding: 12px;
}

.marquee-box {
  background: #330033;
  border: 2px solid #ff00ff;
  overflow: hidden;
  white-space: nowrap;
  padding: 6px 0;
}
.marquee-box span {
  display: inline-block;
  padding-left: 100%;
  animation: marquee 12s linear infinite;
  color: #ffff00;
  font-weight: bold;
  font-size: 1.1em;
}

h1 {
  text-align: center;
  color: #ff00ff;
  font-size: 2em;
  text-shadow: 2px 2px #00ffff;
  animation: rainbow 4s linear infinite;
}
h2 { color: #ffcc00; border-bottom: 2px dotted #00ffff; padding-bottom: 4px; }

.blink { animation: blink 1s steps(1) infinite; }

hr.rainbow {
  height: 6px;
  border: none;
  background: linear-gradient(90deg, red, orange, yellow, green, blue, indigo, violet);
}

table.layout { width: 100%; border-collapse: collapse; }
table.layout td { vertical-align: top; padding: 8px; }
.sidebar { width: 160px; background: #003300; border: 2px solid #00ff00; font-size: 0.85em; }
.sidebar ul { list-style: none; padding: 0; margin: 0; }
.sidebar li { padding: 4px 0; border-bottom: 1px dashed #00ff00; }
.sidebar a { color: #ffff00; }

.content { background: #000011; border: 2px solid #00ffff; padding: 12px; }
.content a { color: #00ffff; }
.content p { line-height: 1.8; }

.under-construction {
  text-align: center;
  background: repeating-linear-gradient(45deg, #ffff00, #ffff00 10px, #000000 10px, #000000 20px);
  color: #ff0000;
  font-weight: bold;
  padding: 6px;
  margin: 10px 0;
  border: 2px solid #ff0000;
}

.download-btn {
  display: inline-block;
  margin: 12px 0;
  padding: 14px 28px;
  background: #ff00ff;
  color: #ffffff;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  border: 3px outset #ffff00;
}
.download-btn:active { border-style: inset; }

.badges { text-align: center; margin: 16px 0; }
.badge {
  display: inline-block;
  background: #111;
  border: 1px solid #666;
  color: #ccc;
  font-size: 0.75em;
  padding: 4px 8px;
  margin: 2px;
}

.counter {
  font-family: "Courier New", monospace;
  background: #000;
  color: #ff0000;
  border: 2px inset #666;
  padding: 4px 8px;
  letter-spacing: 3px;
  font-size: 1.2em;
}

.notice {
  background: #221100;
  border: 2px dashed #ffcc00;
  padding: 10px;
  font-size: 0.9em;
  margin-top: 16px;
}

.webring {
  text-align: center;
  background: #000033;
  border: 2px solid #6666ff;
  padding: 8px;
  margin-top: 16px;
  font-size: 0.9em;
}

.ad-strip { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 16px 0; }
.ad-banner {
  width: 200px; height: 40px;
  border: 2px outset #999;
  background: linear-gradient(180deg, #ffffcc, #ffcc00);
  color: #cc0000; font-weight: bold; font-size: 0.8em;
  display: flex; align-items: center; justify-content: center;
  text-align: center; text-decoration: none;
}
.ad-banner.blue { background: linear-gradient(180deg, #ccffff, #3399ff); color: #000066; }
.ad-banner.pink { background: linear-gradient(180deg, #ffccff, #ff33cc); color: #330033; }
.ad-banner.blinktext { animation: blink 0.8s steps(1) infinite; }

.ad-space-box {
  text-align: center;
  border: 2px dashed #999;
  padding: 10px;
  margin: 16px 0;
  font-size: 0.85em;
  color: #999;
}

footer { text-align: center; font-size: 0.8em; color: #888; margin-top: 20px; }

.bbs-form { background: #001100; border: 2px solid #00ff00; padding: 10px; margin-bottom: 16px; }
.bbs-form input, .bbs-form textarea {
  width: 100%; box-sizing: border-box; margin: 4px 0 10px;
  background: #000; color: #0f0; border: 1px inset #666; font-family: monospace;
}
.bbs-form button {
  background: #ff00ff; color: #fff; border: 3px outset #ffff00;
  padding: 8px 20px; font-weight: bold; cursor: pointer;
}
.bbs-post { border-bottom: 1px dashed #00ffff; padding: 8px 0; }
.bbs-post .meta { color: #ffcc00; font-size: 0.85em; }
.bbs-post .body { white-space: pre-wrap; }