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{{#css /* ── Van Gogh / Starry sky before TOC (pure CSS) ── */ /* 可调变量 */

root{
 --vg-height: 240px;        /* 高度,按需改 */
 --swirl-duration: 40s;     /* 轮转速度 */
 --bg-deep: #07102a;
 --bg-mid:  #12336a;
 --accent:  #f7c85a;

}

/* 确保目录本身仍正常显示,并为伪元素提供定位上下文 */

  1. toc, .toc {
 position: relative;
 z-index: 1;

}

/* 基底图层(伪元素 before)——深色 + 画笔感渐变 */

  1. toc::before {
 content: "";
 display: block;
 width: 100%;
 height: var(--vg-height);
 margin-bottom: 1rem;
 border-radius: 8px;
 overflow: hidden;
 position: relative;
 background:
   /* 大范围色块(类似夜空底色)*/
   radial-gradient(1200px 400px at 10% 20%, rgba(247,200,90,0.10), transparent 20%),
   conic-gradient(from 120deg at 50% 50%, var(--bg-deep), var(--bg-mid), #1b4b7a);
 filter: contrast(115%) saturate(120%) blur(2px);
 transform-origin: 50% 50%;
 will-change: transform, filter;
 animation: vg-rotate var(--swirl-duration) linear infinite;
 box-shadow: 0 2px 18px rgba(2,6,20,0.45) inset;

}

/* 画笔状纹理(叠在基底上,利用 repeating-linear-gradient 模拟笔触)*/

  1. toc::before {
 background-image:
   repeating-linear-gradient(120deg, rgba(255,255,255,0.02) 0 6px, transparent 6px 18px),
   radial-gradient(1200px 400px at 10% 20%, rgba(247,200,90,0.10), transparent 20%),
   conic-gradient(from 120deg at 50% 50%, var(--bg-deep), var(--bg-mid), #1b4b7a);
 background-blend-mode: overlay, normal, normal;
 background-size: cover;

}

/* 星点层(伪元素 after)——多个 radial-gradient 放在不同位置模拟随机星点 */

  1. toc::after{
 content: "";
 position: absolute;
 left: 0;
 top: 0;
 width: 100%;
 height: var(--vg-height);
 pointer-events: none;
 mix-blend-mode: screen;
 background-image:
   radial-gradient(circle at 8% 20%, rgba(255,245,210,1) 0.6px, transparent 1px),
   radial-gradient(circle at 22% 42%, rgba(255,255,255,0.95) 0.8px, transparent 1px),
   radial-gradient(circle at 35% 30%, rgba(255,235,190,0.95) 0.7px, transparent 1px),
   radial-gradient(circle at 58% 18%, rgba(255,250,220,0.95) 0.9px, transparent 1px),
   radial-gradient(circle at 72% 60%, rgba(255,255,255,0.9) 0.6px, transparent 1px),
   radial-gradient(circle at 86% 38%, rgba(255,240,200,0.9) 0.8px, transparent 1px);
 background-repeat: no-repeat;
 filter: drop-shadow(0 0 6px rgba(255,220,120,0.12));
 animation: star-twinkle 3.8s ease-in-out infinite alternate;
 z-index: 2;

}

/* 小“月亮”高光(叠加) */

  1. toc .vg-moon{
 display: none; /* 如果你能编辑 HTML 可用下面的 HTML 标记显示月亮,否则可忽视 */

}

/* 动画 */ @keyframes vg-rotate {

 0% { transform: rotate(0deg) scale(1); }
 50% { transform: rotate(4deg) scale(1.01); }
 100% { transform: rotate(0deg) scale(1); }

}

@keyframes star-twinkle {

 0% { opacity: 0.7; transform: scale(0.98); filter: blur(0.2px); }
 100% { opacity: 1; transform: scale(1.05); filter: blur(0px); }

}

/* 响应式:手机端高度更小 */ @media (max-width:720px){

 :root{ --vg-height: 160px; --swirl-duration: 30s; }

} }} 这里是清冽之泉,提供电脑教程、好书点评。图文优质教程、有趣视频讲解,静待你的光临。

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