/* Web3.0 风格样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #05050a;
  --purple: #a855f7;
  --blue: #3b82f6;
  --cyan: #22d3ee;
  --pink: #ec4899;
  --text: #ffffff;
  --text-dim: rgba(255,255,255,0.6);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'SF Pro Display', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  cursor: none;
}

/* 自定义光标 */
.cursor {
  width: 20px;
  height: 20px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s ease-out, border-color 0.3s, background 0.3s;
  mix-blend-mode: difference;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.08s;
}

.cursor.hover {
  transform: scale(2);
  border-color: var(--pink);
  background: rgba(236,72,153,0.1);
}

.cursor.clicking {
  transform: scale(0.8);
}

/* 加载动画 */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  transition: opacity 0.8s ease, visibility 0.8s;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-ring {
  width: 50px;
  height: 50px;
  border: 2px solid rgba(34,211,238,0.2);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  position: relative;
}

.loader-ring::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  border: 2px solid rgba(168,85,247,0.2);
  border-top-color: var(--purple);
  border-radius: 50%;
  animation: spin 0.6s linear infinite reverse;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-text {
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* 滚动进度指示器 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple), var(--pink));
  z-index: 1000;
  transform-origin: left;
  transform: scaleX(0);
  will-change: transform;
}

/* 侧边导航点 */
.nav-dots {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.nav-dot::before {
  content: attr(data-label);
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.nav-dot:hover::before {
  opacity: 1;
}

.nav-dot:hover {
  background: rgba(255,255,255,0.5);
  transform: scale(1.3);
}

.nav-dot.active {
  background: var(--cyan);
  box-shadow: 0 0 20px rgba(34,211,238,0.6);
}

/* 星光闪烁层 */
.stars {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: white;
  border-radius: 50%;
  animation: twinkle var(--duration) ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes twinkle {
  0%, 100% { opacity: 0.1; transform: scale(0.8); }
  50% { opacity: 0.8; transform: scale(1.2); }
}

/* 粒子画布 */
#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* 渐变叠加层 */
.gradient-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(168,85,247,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(59,130,246,0.15) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
  transition: transform 0.3s ease-out;
}

/* 脉冲波纹 */
.pulse-ring {
  position: fixed;
  border-radius: 50%;
  border: 1px solid rgba(34,211,238,0.3);
  pointer-events: none;
  animation: pulseExpand 2s ease-out forwards;
  z-index: 5;
}

@keyframes pulseExpand {
  0% { width: 0; height: 0; opacity: 1; }
  100% { width: 300px; height: 300px; opacity: 0; margin: -150px 0 0 -150px; }
}

/* 内容容器 */
.content {
  position: relative;
  z-index: 2;
}

/* 鼠标跟随光效 */
.mouse-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(34,211,238,0.08), transparent 70%);
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.3s;
}