UI 1.2.8

添加一些动画，显得更流畅（平滑滚动，页脚统计图标动画）
细节处理优化
更换背景图（嘶溜嘶溜 ~ ）
/* ==================== 基础重置 ==================== */

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

/* ==================== 平滑滚动（新增） ==================== */

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: #fba7b8 rgba(0, 0, 0, 0.05);
}

/* ==================== 滚动条 ==================== */

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb {
  background: #fba7b8;
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: #fa8fa4;
}

/* ==================== 主体 ==================== */

body {
  font-family: system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
}

/* ========== 背景装饰图 — 始终显示，自适应尺寸 ========== */
body::before {
  content: "";
  position: fixed;
  right: 0;
  bottom: 0;
  width: clamp(80px, 22vw, 300px);
  height: auto;
  aspect-ratio: 300 / 480;
  background: url('https://cdn.jsdmirror.com/gh/Lcoy2004/shiyue@latest/03f4d127d3b54ceff2a43491cdb7614c_720.webp') no-repeat right bottom / contain;
  z-index: -1;
  opacity: 0.85;
  pointer-events: none;
  /* 提示浏览器优化渲染层，但不强制创建独立层 */
  contain: layout style paint;
}

/* ==================== 全局容器 ==================== */

.container {
  width: 100%;
  padding: 0 30px;
}

/* 头部容器内边距 */
.App-header .container {
  padding: 0 80px;
  max-width: 100%;
}

/* ==================== 排版 ==================== */

/* 标题层级：h1 > h2 > h3，视觉层次分明 */
h1 { font-size: 23px; }
h2 { font-size: 20px; }
h3 { font-size: 18px; }

h4, h5, h6 {
  font-size: 16px;
  line-height: 1.4;
}

.Hero-title,
.DiscussionPage-nav .item-title,
.DiscussionListItem-title {
  font-family: system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.4;
  letter-spacing: 0.05em;
}

/* ========== 全局链接 ========== */

a {
  color: #d4607a;
  text-decoration: none;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
  text-decoration: underline 0.5px solid transparent;
  text-underline-offset: 3px;
}

a:hover {
  color: #c14a66;
  text-decoration-color: currentColor;
}

a:focus-visible {
  outline: 2px solid #fba7b8;
  outline-offset: 2px;
  border-radius: 2px;
}

/* ========== 正文 ========== */

.Post-body {
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  text-align: justify;
}

.Post-body p {
  margin: 1.2em 0;
}

/* 帖子内图片/视频/嵌入 */
.Post-body img,
.Post-body video,
.Post-body iframe {
  border-radius: 8px;
  max-width: 100%;
  height: auto;
}

/* 帖子内链接 */
.Post-body a {
  word-break: break-word;
}

/* ========== 代码块 ========== */

.Post-body code {
  background: rgba(0, 0, 0, 0.06);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  word-break: break-word;
}

.Post-body pre {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.5;
}

.Post-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

/* ========== 引用块 ========== */

.Post-body blockquote {
  border-left: 4px solid #fba7b8;
  margin: 1.2em 0;
  padding: 0.8em 1.2em;
  background: rgba(251, 167, 184, 0.06);
  border-radius: 0 8px 8px 0;
  color: #555;
}

/* ========== 讨论列表信息 ========== */

.DiscussionListItem-info,
.DiscussionListItem-info a,
.DiscussionListItem-author,
.DiscussionListItem-time,
.DiscussionListItem-count {
  font-size: 12px;
  line-height: 1.6;
}

.App-header,
.App-header a,
.Header-controls {
  font-size: inherit;
}

/* ==================== 分隔线 ==================== */

hr {
  border: none;
  border-top: 2px dotted rgba(0, 0, 0, 0.12);
  margin: 2rem 0;
}

/* ==================== 彩虹按钮 ==================== */

.IndexPage-newDiscussion {
  background: linear-gradient(124deg,
    #ff2400, #e81d1d, #e8b71d, #e3e81d,
    #1de840, #1ddde8, #2b1de8, #dd00f3);
  background-size: 400% 400%;
  border: none;
  border-radius: 40px;
  cursor: pointer;
  animation: rainbow 6s ease infinite;
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.4, 1),
              box-shadow 0.2s cubic-bezier(0.2, 0.8, 0.4, 1);
}

/* 确保按钮文字可见，加深阴影保证对比度 */
.IndexPage-newDiscussion .Button-label {
  color: #fff;
  text-shadow:
    0 1px 3px rgba(0, 0, 0, 0.4),
    0 0 8px rgba(0, 0, 0, 0.2);
}

.IndexPage-newDiscussion:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.IndexPage-newDiscussion:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.IndexPage-newDiscussion:focus-visible {
  outline: 3px solid #fba7b8;
  outline-offset: 2px;
}

@keyframes rainbow {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ==================== Hero 区域 ==================== */

.Hero.WelcomeHero {
  position: relative;
  overflow: hidden;
  background-image:
    linear-gradient(120deg,
      transparent 25%, rgba(238, 114, 157, 0.15) 25%,
      rgba(238, 114, 157, 0.25) 50%, transparent 50%,
      transparent 75%, rgba(255, 182, 193, 0.2) 75%),
    linear-gradient(-60deg,
      transparent 30%, rgba(255, 228, 225, 0.1) 30%,
      rgba(255, 228, 225, 0.1) 60%,
      rgba(255, 209, 220, 0.15) 60%,
      rgba(255, 209, 220, 0.15) 80%, transparent 80%),
    linear-gradient(135deg, #fff5f7, #fff);
  background-size: 300% 300%, 200% 200%, auto;
  animation: bgFlow 35s ease-in-out infinite;
}

/* 覆盖层透明度稍低，保留文字对比度 */
.Hero.WelcomeHero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.45);
  z-index: 1;
  pointer-events: none;
}

.Hero.WelcomeHero .container {
  position: relative;
  z-index: 2;
}

.Hero.WelcomeHero .Hero-title {
  display: inline-block;
  animation:
    rubberBand 1s ease,
    titleFloat 4s ease-in-out 1.5s infinite;
}

@keyframes bgFlow {
  0%, 100% { background-position: 0% 0%, 100% 100%, 0 0; }
  25%      { background-position: 100% 0%, 0% 50%, 0 0; }
  50%      { background-position: 100% 100%, 100% 0%, 0 0; }
  75%      { background-position: 0% 100%, 0% 0%, 0 0; }
}

@keyframes titleFloat {
  0%, 100% {
    transform: translateY(0);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  }
  50% {
    transform: translateY(-3px);
    text-shadow: 0 4px 12px rgba(238, 114, 157, 0.25);
  }
}

@keyframes rubberBand {
  0%   { transform: scale(1, 1); }
  30%  { transform: scale(1.25, 0.75); }
  40%  { transform: scale(0.75, 1.25); }
  50%  { transform: scale(1.15, 0.85); }
  65%  { transform: scale(0.95, 1.05); }
  75%  { transform: scale(1.05, 0.95); }
  100% { transform: scale(1, 1); }
}

/* Flarum 原生加载指示器 */
.LoadingIndicator {
  color: #fba7b8;
}

/* ==================== 页脚统计 + 图标动画（新增） ==================== */

.custom-footer-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1rem 0;
  margin-top: 2rem;
  font-size: 14px;
  color: inherit;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  transition: transform 0.2s ease, background 0.2s ease;
}

.stat-item:hover {
  transform: translateY(-3px) scale(1.02);
  background: rgba(251, 167, 184, 0.08);
}

/* 图标悬浮弹跳 */
.stat-item:hover .stat-icon {
  animation: iconBounce 0.4s ease;
}

@keyframes iconBounce {
  0%, 100% { transform: translateY(0); }
  40%      { transform: translateY(-5px); }
  60%      { transform: translateY(-2px); }
}

.stat-icon   { opacity: 0.7; }
.stat-label  { font-weight: 500; }
.stat-value  { font-weight: 600; }

/* ==================== 侧边栏桌面端固定 ==================== */

@media (min-width: 992px) {
  .IndexPage-nav {
    position: sticky;
    top: 70px;
    align-self: flex-start;
  }
}

/* ==================== 响应式 ==================== */

/* 尊重用户无障碍设置：禁用动画 */
@media (prefers-reduced-motion: reduce) {
  /* 装饰类动画完全禁用 */
  .Hero.WelcomeHero,
  .Hero.WelcomeHero .Hero-title,
  .IndexPage-newDiscussion {
    animation: none !important;
  }

  /* 骨架屏动画禁用 */
  .DiscussionListItem-placeholder,
  .skeleton-block,
  .skeleton-line,
  .skeleton-avatar {
    animation: none !important;
    background: rgba(251, 167, 184, 0.06);
  }

  /* 过渡效果缩短到不可感知 */
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

/* 平板及以下 */
@media (max-width: 767px) {
  body {
    font-size: 14px;
  }

  /* 移动端标题等比缩小，保持层级 */
  h1 { font-size: 20px; }
  h2 { font-size: 18px; }
  h3 { font-size: 16px; }

  h4, h5, h6,
  .Hero-title,
  .DiscussionPage-nav .item-title,
  .DiscussionListItem-title {
    font-size: 15px;
  }

  /* 正文在移动端缩小，避免占屏过多 */
  .Post-body {
    font-size: 15px;
  }

  .DiscussionListItem-info,
  .DiscussionListItem-info a,
  .DiscussionListItem-author,
  .DiscussionListItem-time,
  .DiscussionListItem-count {
    font-size: 12px;
  }

  .container,
  .App-header .container {
    padding: 0 20px;
  }

  .custom-footer-stats {
    flex-direction: column;
    gap: 0.8rem;
    align-items: center;
  }
}

/* 手机小屏 */
@media (max-width: 480px) {
  .container,
  .App-header .container {
    padding: 0 12px;
  }
}