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

:root {
  --bg: #0a0e17;
  --neon-cyan: #00f5ff;
  --neon-pink: #ff2d95;
  --neon-purple: #b44dff;
  --neon-green: #39ff14;
  --neon-yellow: #ffe600;
  --text-dim: #5a6a8a;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  color: #e0e6f0;
}

/* 启动前隐藏主界面 */
body.booting .stage,
body.booting .music-controls,
body.booting .enter-hint,
body.booting .beat-bar,
body.booting #code-rain {
  opacity: 0;
  pointer-events: none;
}

body.boot-done .stage,
body.boot-done .music-controls,
body.boot-done .enter-hint,
body.boot-done .beat-bar,
body.boot-done #code-rain {
  opacity: 1;
  transition: opacity 0.8s ease 0.15s;
}

/* 终端启动屏 */
.boot-screen {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 8, 14, 0.97);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.boot-screen.hide {
  opacity: 0;
  transform: scale(1.03);
  pointer-events: none;
}

.boot-terminal {
  width: min(92vw, 640px);
  padding: 1rem 1.2rem 1.4rem;
  border-radius: 12px;
  border: 1px solid rgba(0, 245, 255, 0.2);
  background: rgba(10, 14, 23, 0.92);
  box-shadow: 0 0 40px rgba(0, 245, 255, 0.12), inset 0 0 60px rgba(0, 0, 0, 0.4);
}

.boot-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.boot-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.boot-dot.red { background: #ff5f57; }
.boot-dot.yellow { background: #febc2e; }
.boot-dot.green { background: #28c840; }

.boot-title {
  margin-left: 0.5rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

.boot-output {
  min-height: 200px;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--neon-cyan);
}

.boot-output .boot-tip {
  color: var(--neon-yellow);
  margin-top: 0.4rem;
}

.boot-output .boot-enter {
  color: var(--neon-pink);
  margin-top: 0.6rem;
  animation: hint-pulse 1.5s ease-in-out infinite;
}

.boot-cursor {
  color: var(--neon-green);
  animation: none;
}

.boot-cursor.blink {
  animation: cursor-blink 0.9s step-end infinite;
}

/* 摇一摇彩蛋 */
#party-layer {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  overflow: hidden;
}

.party-particle {
  position: absolute;
  font-size: 1.4rem;
  animation: particle-fly 1.6s ease-out forwards;
  filter: drop-shadow(0 0 8px rgba(255, 230, 0, 0.5));
}

.penguin-pop {
  position: fixed;
  left: 50%;
  top: 42%;
  z-index: 55;
  transform: translate(-50%, -50%) scale(0.3);
  opacity: 0;
  text-align: center;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
  pointer-events: none;
}

.penguin-pop.show {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

.penguin-emoji {
  display: block;
  font-size: 4.5rem;
  filter: drop-shadow(0 0 20px rgba(0, 245, 255, 0.6));
  animation: penguin-wiggle 0.4s ease-in-out infinite alternate;
}

.penguin-text {
  display: block;
  margin-top: 0.5rem;
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--neon-pink);
  text-shadow: 0 0 16px rgba(255, 45, 149, 0.5);
}

body.shake-party {
  animation: screen-shake 0.45s ease-in-out;
}

.stage.mega-bounce .dancer {
  animation-duration: 0.25s !important;
  filter: brightness(1.4) saturate(1.3);
}

.stage.mega-bounce .title {
  animation-duration: 0.6s !important;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes particle-fly {
  0% {
    opacity: 1;
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(var(--dx), var(--dy)) rotate(var(--rot)) scale(0.4);
  }
}

@keyframes penguin-wiggle {
  from { transform: rotate(-12deg); }
  to { transform: rotate(12deg); }
}

@keyframes screen-shake {
  0%, 100% { transform: translate(0, 0); }
  15% { transform: translate(-6px, 3px) rotate(-0.5deg); }
  30% { transform: translate(5px, -4px) rotate(0.5deg); }
  45% { transform: translate(-4px, -2px); }
  60% { transform: translate(6px, 2px) rotate(-0.3deg); }
  75% { transform: translate(-3px, 4px); }
}

/* 代码雨画布 */
#code-rain {
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

body.ascii-video-active #code-rain {
  opacity: 0.95;
}

.ascii-video-source {
  position: fixed;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  left: -9999px;
  top: 0;
}

/* 媒体加载进度条 */
.media-loader {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 8, 14, 0.82);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.media-loader.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

body.media-loading .play-btn {
  opacity: 0.55;
  cursor: wait;
}

.media-loader-box {
  width: min(88vw, 420px);
  padding: 1.2rem 1.3rem 1rem;
  border-radius: 14px;
  border: 1px solid rgba(0, 245, 255, 0.25);
  background: rgba(10, 14, 23, 0.94);
  box-shadow: 0 0 40px rgba(0, 245, 255, 0.12);
  text-align: center;
}

.media-loader-label {
  font-size: 0.78rem;
  color: var(--neon-cyan);
  margin-bottom: 0.85rem;
  letter-spacing: 0.06em;
}

.media-loader-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-bottom: 0.55rem;
}

.media-loader-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink), var(--neon-green));
  background-size: 200% 100%;
  animation: loader-shimmer 1.2s linear infinite;
  transition: width 0.15s ease-out;
}

@keyframes loader-shimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.media-loader-pct {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--neon-yellow);
  letter-spacing: 0.12em;
}

/* 除虫小游戏 */
#bug-hunt-layer {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  overflow: hidden;
}

.rain-bug {
  position: absolute;
  top: -2rem;
  padding: 0.15rem 0.35rem;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 800;
  color: #ff3b3b;
  text-shadow:
    0 0 8px rgba(255, 59, 59, 0.95),
    0 0 18px rgba(255, 45, 149, 0.55);
  cursor: crosshair;
  pointer-events: auto;
  animation: bug-fall linear forwards;
  transform: translateX(-50%);
  letter-spacing: 0.04em;
}

.rain-bug:hover {
  color: #ff6b6b;
  transform: translateX(-50%) scale(1.15);
}

.rain-bug.squashed {
  animation: bug-squash 0.22s ease forwards;
  pointer-events: none;
}

@keyframes bug-fall {
  from { transform: translateX(-50%) translateY(0); opacity: 1; }
  to { transform: translateX(-50%) translateY(calc(100vh + 3rem)); opacity: 0.85; }
}

@keyframes bug-squash {
  0% { transform: translateX(-50%) scale(1); opacity: 1; }
  100% { transform: translateX(-50%) scale(1.8); opacity: 0; filter: blur(2px); }
}

.bug-squash-pop {
  position: fixed;
  z-index: 20;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--neon-green);
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.8);
  pointer-events: none;
  animation: bug-pop-rise 0.7s ease forwards;
  transform: translate(-50%, -50%);
}

@keyframes bug-pop-rise {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(0.8); }
  100% { opacity: 0; transform: translate(-50%, -120%) scale(1.2); }
}

.bug-hunt-hud {
  position: fixed;
  left: 1rem;
  bottom: 5.5rem;
  z-index: 12;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 59, 59, 0.35);
  background: rgba(10, 14, 23, 0.82);
  box-shadow: 0 0 20px rgba(255, 59, 59, 0.15);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  transition: opacity 0.3s ease;
}

.bug-hunt-hud.hidden {
  opacity: 0;
  pointer-events: none;
}

.bug-hud-label {
  color: #ff6b6b;
}

.bug-hud-score {
  color: var(--neon-green);
  font-weight: 800;
  font-size: 0.95rem;
}

.bug-hud-timer {
  color: var(--neon-yellow);
}

.bug-round-toast,
.bug-ach-toast {
  position: fixed;
  left: 50%;
  bottom: 6.5rem;
  z-index: 25;
  transform: translateX(-50%) translateY(12px);
  padding: 0.65rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(0, 245, 255, 0.25);
  background: rgba(10, 14, 23, 0.92);
  font-size: 0.78rem;
  color: #e0e6f0;
  white-space: nowrap;
  max-width: min(92vw, 520px);
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.bug-ach-toast {
  border-color: rgba(57, 255, 20, 0.4);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.2);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bug-round-toast.show,
.bug-ach-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.bug-ach-icon {
  font-size: 1.1rem;
}

body.booting #bug-hunt-layer,
body.booting .bug-hunt-hud {
  opacity: 0;
  pointer-events: none;
}

/* 扫描线 */
.scanlines {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

/* 主舞台 */
.stage {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* 标题 */
.title-block {
  text-align: center;
  margin-bottom: 3rem;
  animation: title-float 3s ease-in-out infinite;
}

.title {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink), var(--neon-purple));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s ease infinite, title-glow 2s ease-in-out infinite alternate;
  text-shadow: none;
  filter: drop-shadow(0 0 30px rgba(0, 245, 255, 0.4));
}

.subtitle {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--text-dim);
  letter-spacing: 0.4em;
  text-transform: uppercase;
  animation: subtitle-blink 3s step-end infinite;
}

.enter-blog-btn {
  display: inline-block;
  margin-top: 1.4rem;
  padding: 0.55rem 1.3rem;
  border: 1px solid rgba(0, 245, 255, 0.4);
  border-radius: 999px;
  color: var(--neon-cyan);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  background: rgba(0, 245, 255, 0.08);
  transition: all 0.25s;
}

.enter-blog-btn:hover {
  background: rgba(255, 45, 149, 0.15);
  border-color: rgba(255, 45, 149, 0.45);
  color: var(--neon-pink);
  box-shadow: 0 0 20px rgba(255, 45, 149, 0.25);
  transform: scale(1.04);
}

/* 跳舞的代码块容器 */
.dancers {
  position: relative;
  width: min(90vw, 900px);
  height: 280px;
}

.dancer {
  position: absolute;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.8rem;
  line-height: 1.5;
  white-space: pre;
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  cursor: default;
  user-select: none;
  transition: box-shadow 0.3s;
}

.dancer:hover {
  box-shadow: 0 0 30px rgba(0, 245, 255, 0.3);
  z-index: 10;
}

.guest-dancer {
  max-width: 200px;
  white-space: pre-wrap;
  word-break: break-word;
  transition: box-shadow 0.4s, background 0.4s;
}

.guest-dancer .guest-msg {
  color: #fff;
  font-weight: 600;
}

.guest-dancer.slot-empty {
  opacity: 0.42;
}

/* 各舞者位置与舞步 */
.dancer-1 {
  top: 10%;
  left: 5%;
  background: rgba(0, 245, 255, 0.06);
  border-color: rgba(0, 245, 255, 0.2);
  animation: bounce-left 1.2s ease-in-out infinite;
}
.dancer-1 .kw { color: var(--neon-cyan); }
.dancer-1 .fn { color: #fff; }
.dancer-1 .str { color: var(--neon-green); }

.dancer-2 {
  top: 5%;
  right: 8%;
  background: rgba(255, 45, 149, 0.06);
  border-color: rgba(255, 45, 149, 0.2);
  animation: wiggle 0.9s ease-in-out infinite;
}
.dancer-2 .kw { color: var(--neon-pink); }
.dancer-2 .fn { color: #fff; }
.dancer-2 .num { color: var(--neon-yellow); }

.dancer-3 {
  top: 45%;
  left: 15%;
  background: rgba(180, 77, 255, 0.06);
  border-color: rgba(180, 77, 255, 0.2);
  animation: spin-dance 4s ease-in-out infinite;
}
.dancer-3 .kw { color: var(--neon-purple); }
.dancer-3 .op { color: var(--neon-pink); }
.dancer-3 .str { color: var(--neon-green); }

.dancer-4 {
  top: 40%;
  right: 12%;
  background: rgba(57, 255, 20, 0.05);
  border-color: rgba(57, 255, 20, 0.2);
  animation: wave-y 1.5s ease-in-out infinite;
}
.dancer-4 .kw { color: var(--neon-green); }
.dancer-4 .ty { color: var(--neon-cyan); }
.dancer-4 .fn { color: #fff; }

.dancer-5 {
  bottom: 8%;
  left: 30%;
  background: rgba(255, 230, 0, 0.05);
  border-color: rgba(255, 230, 0, 0.2);
  animation: bounce-right 1.1s ease-in-out infinite 0.3s;
}
.dancer-5 .kw { color: var(--neon-yellow); }
.dancer-5 .fn { color: #fff; }
.dancer-5 .cm { color: var(--text-dim); }

.dancer-6 {
  bottom: 12%;
  right: 25%;
  background: rgba(0, 245, 255, 0.05);
  border-color: rgba(0, 245, 255, 0.15);
  animation: jitter 0.6s steps(2) infinite;
}
.dancer-6 .op { color: var(--neon-cyan); }
.dancer-6 .kw { color: var(--neon-pink); }
.dancer-6 .num { color: var(--neon-yellow); }

/* 节拍指示器 */
.beat-bar {
  position: fixed;
  bottom: 2.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 6px;
  align-items: flex-end;
  height: 32px;
}

.beat-dot {
  width: 6px;
  background: var(--neon-cyan);
  border-radius: 2px;
  opacity: 0.3;
  transition: height 0.08s, opacity 0.08s;
}

.beat-dot.active {
  opacity: 1;
  box-shadow: 0 0 12px var(--neon-cyan);
}

/* 音乐控制 */
.music-controls {
  position: fixed;
  bottom: 5.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  align-items: flex-end;
  gap: 0.6rem;
}

/* 纸片人 */
.paper-dancers {
  display: flex;
  align-items: flex-end;
  gap: 0.35rem;
  opacity: 0;
  transform: translateY(12px) scale(0.8);
  pointer-events: none;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.music-controls.playing .paper-dancers {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.paper-left { margin-right: 0.2rem; }
.paper-right { margin-left: 0.2rem; }

.paper-person {
  width: 42px;
  height: 64px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
  transform-origin: center bottom;
}

.paper-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.pp-shadow {
  fill: rgba(0, 0, 0, 0.25);
}

.pp-arm-l {
  transform-box: fill-box;
  transform-origin: right center;
}

.pp-arm-r {
  transform-box: fill-box;
  transform-origin: left center;
}

.pp-leg-l, .pp-leg-r {
  transform-box: fill-box;
  transform-origin: top center;
}

/* 四个纸片人各有不同舞感 */
.pp-1 { animation: pp-float 1.8s ease-in-out infinite; }
.pp-1 .pp-arm-l { animation: pp-arm-wave-l 0.55s ease-in-out infinite alternate; }
.pp-1 .pp-arm-r { animation: pp-arm-wave-r 0.55s ease-in-out infinite alternate; }
.pp-1 .pp-leg-l { animation: pp-leg-step-l 0.7s ease-in-out infinite; }
.pp-1 .pp-leg-r { animation: pp-leg-step-r 0.7s ease-in-out infinite 0.35s; }

.pp-2 { animation: pp-shake 0.35s ease-in-out infinite; }
.pp-2 .pp-arm-l { animation: pp-arm-shake-l 0.35s ease-in-out infinite; }
.pp-2 .pp-arm-r { animation: pp-arm-shake-r 0.35s ease-in-out infinite; }
.pp-2 .pp-leg-l { animation: pp-leg-kick 0.5s ease-in-out infinite; }
.pp-2 .pp-leg-r { animation: pp-leg-kick 0.5s ease-in-out infinite 0.25s; }

.pp-3 { animation: pp-bounce 0.6s ease-in-out infinite; }
.pp-3 .pp-arm-l { animation: pp-arm-jazz-l 0.8s ease-in-out infinite; }
.pp-3 .pp-arm-r { animation: pp-arm-jazz-r 0.8s ease-in-out infinite; }
.pp-3 .pp-leg-l { animation: pp-leg-jump-l 0.6s ease-in-out infinite; }
.pp-3 .pp-leg-r { animation: pp-leg-jump-r 0.6s ease-in-out infinite; }

.pp-4 { animation: pp-sway 1.1s ease-in-out infinite; }
.pp-4 .pp-arm-l { animation: pp-arm-spin-l 1.2s linear infinite; }
.pp-4 .pp-arm-r { animation: pp-arm-spin-r 1.2s linear infinite; }
.pp-4 .pp-leg-l { animation: pp-leg-sway-l 1.1s ease-in-out infinite; }
.pp-4 .pp-leg-r { animation: pp-leg-sway-r 1.1s ease-in-out infinite; }

.music-controls.playing .pp-shadow {
  animation: pp-shadow-pulse 0.6s ease-in-out infinite;
}

body.on-beat .paper-person {
  filter: drop-shadow(0 0 10px rgba(255, 45, 149, 0.5)) drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
}

.play-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1.4rem;
  border: 1px solid rgba(0, 245, 255, 0.35);
  border-radius: 999px;
  background: rgba(0, 245, 255, 0.08);
  color: var(--neon-cyan);
  font-family: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.25s;
  backdrop-filter: blur(8px);
}

.play-btn:hover {
  background: rgba(0, 245, 255, 0.18);
  box-shadow: 0 0 24px rgba(0, 245, 255, 0.25);
  transform: scale(1.04);
}

.play-btn.playing {
  border-color: rgba(255, 45, 149, 0.45);
  background: rgba(255, 45, 149, 0.1);
  color: var(--neon-pink);
  animation: btn-pulse 1.2s ease-in-out infinite;
}

.play-icon {
  font-size: 1rem;
  line-height: 1;
}

/* 进入提示 */
.enter-hint {
  position: fixed;
  bottom: 8.5rem;
  z-index: 3;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  animation: hint-pulse 2s ease-in-out infinite;
  transition: opacity 0.3s;
}

/* 音乐节拍时舞台微震 */
.stage.beat-hit .title {
  filter: drop-shadow(0 0 50px rgba(255, 45, 149, 0.7));
}

body.on-beat .dancer {
  filter: brightness(1.15);
}

/* 动画关键帧 */
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes title-glow {
  from { filter: drop-shadow(0 0 20px rgba(0, 245, 255, 0.3)); }
  to   { filter: drop-shadow(0 0 40px rgba(255, 45, 149, 0.5)); }
}

@keyframes title-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes subtitle-blink {
  0%, 90%, 100% { opacity: 1; }
  95% { opacity: 0.3; }
}

@keyframes bounce-left {
  0%, 100% { transform: translate(0, 0) rotate(-2deg); }
  25% { transform: translate(-12px, -18px) rotate(2deg); }
  50% { transform: translate(0, -8px) rotate(-1deg); }
  75% { transform: translate(8px, -14px) rotate(3deg); }
}

@keyframes bounce-right {
  0%, 100% { transform: translate(0, 0) rotate(2deg); }
  25% { transform: translate(14px, -16px) rotate(-3deg); }
  50% { transform: translate(0, -6px) rotate(1deg); }
  75% { transform: translate(-10px, -20px) rotate(-2deg); }
}

@keyframes wiggle {
  0%, 100% { transform: rotate(-4deg) scale(1); }
  25% { transform: rotate(4deg) scale(1.04); }
  50% { transform: rotate(-3deg) scale(0.98); }
  75% { transform: rotate(5deg) scale(1.02); }
}

@keyframes spin-dance {
  0%, 100% { transform: rotate(0deg) translateY(0); }
  25% { transform: rotate(3deg) translateY(-12px); }
  50% { transform: rotate(-2deg) translateY(4px); }
  75% { transform: rotate(4deg) translateY(-8px); }
}

@keyframes wave-y {
  0%, 100% { transform: translateY(0) skewX(0deg); }
  33% { transform: translateY(-20px) skewX(2deg); }
  66% { transform: translateY(6px) skewX(-2deg); }
}

@keyframes jitter {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(3px, -5px); }
}

@keyframes hint-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

@keyframes btn-pulse {
  0%, 100% { box-shadow: 0 0 12px rgba(255, 45, 149, 0.2); }
  50% { box-shadow: 0 0 28px rgba(255, 45, 149, 0.45); }
}

/* 纸片人舞步 */
@keyframes pp-float {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-14px) rotate(3deg); }
}

@keyframes pp-shake {
  0%, 100% { transform: translateX(-4px) rotate(-6deg); }
  50% { transform: translateX(4px) rotate(6deg); }
}

@keyframes pp-bounce {
  0%, 100% { transform: translateY(0) scaleY(1); }
  40% { transform: translateY(-18px) scaleY(1.05); }
  60% { transform: translateY(-10px) scaleY(0.95); }
}

@keyframes pp-sway {
  0%, 100% { transform: rotate(-8deg); }
  50% { transform: rotate(8deg); }
}

@keyframes pp-arm-wave-l {
  from { transform: rotate(-30deg); }
  to   { transform: rotate(-120deg); }
}

@keyframes pp-arm-wave-r {
  from { transform: rotate(30deg); }
  to   { transform: rotate(120deg); }
}

@keyframes pp-arm-shake-l {
  0%, 100% { transform: rotate(-60deg); }
  50% { transform: rotate(-100deg); }
}

@keyframes pp-arm-shake-r {
  0%, 100% { transform: rotate(60deg); }
  50% { transform: rotate(100deg); }
}

@keyframes pp-arm-jazz-l {
  0%, 100% { transform: rotate(-45deg); }
  50% { transform: rotate(-90deg); }
}

@keyframes pp-arm-jazz-r {
  0%, 100% { transform: rotate(45deg); }
  50% { transform: rotate(90deg); }
}

@keyframes pp-arm-spin-l {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes pp-arm-spin-r {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-360deg); }
}

@keyframes pp-leg-step-l {
  0%, 100% { transform: rotate(-8deg); }
  50% { transform: rotate(15deg); }
}

@keyframes pp-leg-step-r {
  0%, 100% { transform: rotate(8deg); }
  50% { transform: rotate(-15deg); }
}

@keyframes pp-leg-kick {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-35deg); }
}

@keyframes pp-leg-jump-l {
  0%, 100% { transform: rotate(-12deg); }
  50% { transform: rotate(20deg); }
}

@keyframes pp-leg-jump-r {
  0%, 100% { transform: rotate(12deg); }
  50% { transform: rotate(-20deg); }
}

@keyframes pp-leg-sway-l {
  0%, 100% { transform: rotate(-5deg); }
  50% { transform: rotate(10deg); }
}

@keyframes pp-leg-sway-r {
  0%, 100% { transform: rotate(5deg); }
  50% { transform: rotate(-10deg); }
}

@keyframes pp-shadow-pulse {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 0.1; }
}

/* 移动端优化 */
@media (max-width: 768px) {
  html, body {
    overflow-x: hidden;
    overflow-y: auto;
  }

  .title-block {
    margin-bottom: 1.5rem;
  }

  .title {
    letter-spacing: 0.08em;
  }

  .subtitle {
    letter-spacing: 0.2em;
    font-size: 0.75rem;
  }

  .enter-blog-btn {
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
  }

  .dancers {
    height: 220px;
    width: 95vw;
  }

  .dancer {
    font-size: 0.65rem;
    padding: 0.5rem 0.65rem;
    max-width: 150px;
  }

  .guest-dancer {
    max-width: 140px;
  }

  .music-controls {
    flex-wrap: wrap;
    justify-content: center;
    bottom: 4.5rem;
    width: 92vw;
    gap: 0.4rem;
  }

  .paper-dancers {
    display: none;
  }

  .play-btn {
    font-size: 0.75rem;
    padding: 0.55rem 1rem;
  }

  .enter-hint {
    bottom: 7.5rem;
    font-size: 0.65rem;
    padding: 0 1rem;
    text-align: center;
    width: 100%;
  }

  .beat-bar {
    bottom: 1.6rem;
  }

  .boot-terminal {
    width: 94vw;
    padding: 0.8rem 1rem 1rem;
  }

  .boot-output {
    min-height: 160px;
    font-size: 0.72rem;
  }

  .penguin-pop .penguin-emoji {
    font-size: 3rem;
  }

  .social-toast {
    top: auto;
    bottom: 6rem;
    font-size: 0.72rem;
    max-width: 90vw;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .dancers {
    height: 180px;
  }

  .dancer {
    font-size: 0.58rem;
    max-width: 120px;
  }

  .stage {
    justify-content: flex-start;
    padding-top: 3.5rem;
  }
}

/* 备案号页脚（首页） */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 0.3rem 0.5rem;
  text-align: center;
  font-size: 0.58rem;
  color: #5a6a8a;
  background: rgba(10, 14, 23, 0.8);
  border-top: 1px solid rgba(90, 106, 138, 0.12);
}

.site-footer a {
  color: #5a6a8a;
  text-decoration: none;
}

.site-footer a:hover {
  color: #00f5ff;
}