/* ==========================================================================
   AnHeYu · 卡片风 —— Halo 主题样式
   设计基线取自参考站：紫调主色 / 卡片式布局 / 渐变横幅 / 全套入场与悬停动效
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --primary: #6d28d9;
  --primary-op: color-mix(in srgb, var(--primary) 14%, transparent);
  --primary-op-deep: color-mix(in srgb, var(--primary) 88%, transparent);
  --primary-op-light: color-mix(in srgb, var(--primary) 5%, transparent);
  --primary-foreground: #fff;

  --background: #f7f9fe;
  --foreground: #363636;
  --card: #fff;
  --border: #e3e8f7;
  --muted: #f1f3f8;
  --muted-foreground: #3c3c43cc;
  --secondary: #edf0f7;

  --blue: #3e86f6;
  --red: #d80020;
  --pink: #ff7c7c;
  --green: #57bd6a;
  --yellow: #c28b00;
  --orange: #e38100;
  --purple: #7a60d2;

  --shadow-sm: 0 2px 8px -2px #0000000d;
  --shadow-md: 0 8px 16px -4px #2c2d300d;
  --shadow-lg: 0 12px 24px -8px #00000014;
  --shadow-primary: 0 8px 12px -3px var(--primary-op);
  --scrollbar: #3c3c4366;

  --header-h: 60px;
  --sidebar-w: 300px;
  --radius: 12px;
  --font-sans: "LXGW WenKai Screen", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}

:root.dark {
  --primary-foreground: #fff;
  --background: #18171d;
  --foreground: #f7f7fa;
  --card: #1d1e22;
  --border: #3d3d3f;
  --muted: #21232a;
  --muted-foreground: #a1a2b8;
  --secondary: #30343f;
  --blue: #0084ff;
  --red: #ff3842;
  --pink: #d44040;
  --green: #3e9f50;
  --yellow: #ffc93e;
  --orange: #ff953e;
  --shadow-sm: 0 2px 8px -2px #0000004d;
  --shadow-md: 0 8px 16px -4px #0000004d;
  --shadow-lg: 0 12px 24px -8px #0006;
  --scrollbar: #c8c8df66;
}

/* ---------- 2. 基础 ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--foreground);
  background: var(--background);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s, color .3s;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- 3. 顶部阅读进度 ---------- */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  z-index: 2000;
  background: linear-gradient(90deg, var(--primary), color-mix(in srgb, var(--primary) 40%, #fff));
  transition: width .1s linear;
  pointer-events: none;
}

/* ---------- 4. 页头 ---------- */
.header-wrapper {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--card);
  outline: 1px solid var(--border);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color .3s, outline-color .3s, box-shadow .3s;
  will-change: background-color, outline-color;
}

.header-wrapper.is-scrolled { box-shadow: var(--shadow-md); }

.header-content {
  position: relative;
  width: 100%;
  max-width: 1400px;
  height: var(--header-h);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
}

.header-left { display: flex; align-items: center; height: var(--header-h); z-index: 102; }

.site-name-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 35px;
  padding: 0 10px;
  border-radius: 50px;
  overflow: hidden;
  transition: all .3s;
}
.site-logo { width: 22px; height: 22px; object-fit: contain; border-radius: 6px; }
.site-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 2;
  white-space: nowrap;
  transition: all .3s, opacity .3s;
}
.site-home-icon {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 22px; height: 22px;
  opacity: 0;
  transition: all .3s;
}
.site-name-link:hover { background: var(--primary); color: var(--primary-foreground); }
.site-name-link:hover .site-title { opacity: 0; transform: translateY(-6px); }
.site-name-link:hover .site-home-icon { opacity: 1; }
.site-name-link:hover .site-logo { opacity: 0; }

.main-nav {
  position: absolute;
  left: 0; top: 0;
  width: 100%;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.menus-items {
  display: flex;
  justify-content: center;
  align-items: center;
  width: fit-content;
  pointer-events: auto;
  transition: transform .2s ease-out, opacity .2s ease-out;
}
.header-wrapper.is-scrolled .menus-items { opacity: 0; transform: translateY(-50px) scale(1.1); pointer-events: none; }

.menus-item { position: relative; margin: auto; padding: 0 .4rem; }
.menu-title {
  display: block;
  height: 35px;
  line-height: 35px;
  padding: 0 .8em 0 1em;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .2rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all .3s;
}
.menus-item:hover > .menu-title { background: var(--primary); color: var(--primary-foreground); }

.menus-item-child {
  position: absolute;
  top: 35px; left: 50%;
  transform: translateX(-50%) translateY(-10px) scale(0);
  transform-origin: top center;
  margin: 8px 0 0;
  padding: 6px 4px;
  list-style: none;
  width: max-content;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 50px;
  box-shadow: 0 0 12px 4px #0000000d;
  opacity: 0;
  pointer-events: none;
  transition: all .3s;
  z-index: 5;
}
.menus-item-child::before { content: ""; position: absolute; top: -12px; left: 0; width: 100%; height: 16px; }
.menus-item:hover .menus-item-child {
  opacity: 1;
  pointer-events: all;
  border-color: var(--primary);
  transform: translateX(-50%) translateY(0) scale(1);
}
.menus-item-child li { display: inline-block; margin: 0 3px; }
.menus-item-child .site-page {
  display: flex;
  align-items: center;
  min-height: 35px;
  padding: .3rem .8rem;
  border-radius: 100px;
  white-space: nowrap;
  transition: all .3s;
}
.menus-item-child .site-page:hover { background: var(--primary); color: var(--primary-foreground); padding: .3rem 1rem; }

.page-name-container {
  position: absolute;
  top: calc(var(--header-h) + 2px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: transform .25s cubic-bezier(.4, 0, .2, 1), opacity .2s cubic-bezier(.4, 0, .2, 1);
}
.header-wrapper.is-scrolled .page-name-container { opacity: 1; transform: translateX(-50%) translateY(-52px); }
.page-name {
  font-size: 1.05rem;
  font-weight: 700;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-right { margin-left: auto; display: flex; align-items: center; gap: .5rem; z-index: 102; }
.nav-button {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  padding: 0;
  border: none;
  border-radius: 50px;
  background: transparent;
  color: var(--foreground);
  cursor: pointer;
  transition: all .3s;
}
.nav-button svg { width: 20px; height: 20px; }
.nav-button:hover { background: var(--primary); color: var(--primary-foreground); transform: scale(1.06); }
.nav-button .ico-sun { display: none; }
:root.dark .nav-button .ico-moon { display: none; }
:root.dark .nav-button .ico-sun { display: block; }

/* 抽屉 */
.drawer { position: fixed; inset: 0; z-index: 1500; visibility: hidden; }
.drawer.is-open { visibility: visible; }
.drawer-scrim {
  position: absolute; inset: 0;
  background: #0006;
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity .3s;
}
.drawer.is-open .drawer-scrim { opacity: 1; }
.drawer-panel {
  position: absolute;
  top: 0; right: 0;
  width: min(320px, 84vw);
  height: 100%;
  padding: 1rem 1.25rem 2rem;
  background: var(--card);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform .35s cubic-bezier(.4, 0, .2, 1);
}
.drawer.is-open .drawer-panel { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.drawer-label { font-weight: 700; letter-spacing: .2rem; color: var(--muted-foreground); }
.drawer-link, .drawer-sublink {
  display: block;
  padding: .7rem .9rem;
  border-radius: 10px;
  font-weight: 600;
  transition: all .25s;
}
.drawer-sublink { padding-left: 1.8rem; font-size: .92rem; font-weight: 400; color: var(--muted-foreground); }
.drawer-link:hover, .drawer-sublink:hover { background: var(--primary); color: var(--primary-foreground); }

/* ---------- 5. 页面骨架 ---------- */
.site-main { padding-top: calc(var(--header-h) + .5rem); }
.site-inner {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem 1rem;
}
.home-layout { display: flex; gap: .75rem; align-items: flex-start; }
.home-main { flex: 1; min-width: 0; }

/* ---------- 6. 首页横幅 ---------- */
.home-top { display: flex; gap: .625rem; width: 100%; height: 268px; margin: .5rem auto 0; }
.home-left { flex: 1.05; min-width: 0; height: 100%; display: flex; flex-direction: column; }
.home-right { flex: 1; min-width: 0; height: 100%; }

.random-banner {
  position: relative;
  flex-direction: column;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow-md);
  transition: all .3s;
  will-change: transform;
}
.random-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    104deg,
    var(--card) 0%,
    var(--card) 32%,
    color-mix(in srgb, var(--card) 74%, transparent) 50%,
    transparent 72%
  );
}

.banner-title {
  position: absolute;
  top: 50%;
  left: 2.6rem;
  z-index: 2;
  transform: translateY(-50%);
  transition: all .4s;
}
.banner-title-big { font-size: 2.25rem; font-weight: 700; line-height: 1.18; margin-bottom: .5rem; }
.banner-title-small { font-size: 12px; color: var(--muted-foreground); line-height: 1; }
.banner-subtitle { margin-top: .8rem; font-size: .95rem; color: var(--muted-foreground); }

.random-banner:hover .banner-title { opacity: 0; transform: translateY(-50%) translateX(-14px); }

.skills-tags-group {
  position: absolute;
  top: -16%; left: 4%;
  width: 122%; height: 132%;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.4rem;
  transform: rotate(-22deg);
  pointer-events: none;
}
.tags-row { overflow: hidden; }
.tags-group-wrapper { display: flex; flex-wrap: nowrap; width: max-content; will-change: transform; }
.tags-row--a .tags-group-wrapper { animation: row-up 60s linear infinite; }
.tags-row--b .tags-group-wrapper { animation: row-down 80s linear infinite; }

@keyframes row-up { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes row-down { from { transform: translateX(-50%); } to { transform: translateX(0); } }

.icon-pair { flex-shrink: 0; margin-left: 1rem; }
.icon-pair:nth-child(even) { transform: translateY(1.6rem); }

.tech-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 120px;
  border-radius: 30px;
  background: var(--tile, var(--muted));
  box-shadow: 0 2px 16px -3px #00000026;
  transition: transform .3s;
}
.tech-icon img { width: 60px; height: 60px; object-fit: contain; filter: brightness(0) invert(1); }
.tech-icon--ink-dark img { filter: none; }

.random-hover {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  padding-left: .5rem;
  color: #fff;
  opacity: 0;
  cursor: pointer;
  transition: all .5s cubic-bezier(.71, .15, .16, 1.15);
}
.random-banner:hover .random-hover {
  opacity: 1;
  padding-left: 2rem;
  background: var(--primary-op-deep);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
}
.banner-text { display: flex; align-items: center; font-size: 2.6rem; font-weight: 700; }
.banner-text svg { width: 3rem; height: 3rem; margin-left: 1rem; }

/* 分类胶囊 */
.category-group { display: flex; gap: .5rem; margin-top: .5rem; }
.category-item { flex: 1; position: relative; transition: all .8s cubic-bezier(.65, .15, .37, 1.19); }
.category-item:hover { flex: 2; }
.category-button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.2rem;
  border-radius: var(--radius);
  color: #fff;
  overflow: hidden;
  background-size: 200% !important;
  transition: all .3s;
}
.category-button:hover { background-position: 100% 50%; box-shadow: 0 6px 20px -6px #00000059; }
.category-button-text {
  display: inline-block;
  max-width: 150px;
  font-size: 1.2rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.category-icon {
  position: absolute;
  right: 0;
  width: 100px;
  text-align: center;
  opacity: .2;
  filter: blur(2px);
  transform: scale(1) rotate(15deg);
  transition: all .3s;
}
.category-icon svg { width: 5rem; height: 5rem; }
.category-item:hover .category-icon {
  opacity: .8;
  filter: blur(0);
  transform: scale(1.03) rotate(0);
  transition: all .8s .15s;
}
.category-count {
  position: relative;
  z-index: 2;
  font-size: .8rem;
  padding: 2px 8px;
  border-radius: 20px;
  background: #ffffff33;
}

/* 右侧图片卡 */
.today-card {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  cursor: pointer;
}
.today-card-cover, .today-card-placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.today-card-placeholder { background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 30%, #7a60d2)); }
.today-card-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #000000b3 0%, #00000033 45%, transparent 75%);
}
.today-card:hover .today-card-cover { transform: scale(1.05); }
.today-card-info { position: absolute; left: 2rem; bottom: 2rem; z-index: 2; max-width: 60%; color: #fff; }
.today-card-tips { font-size: 12px; opacity: .85; }
.today-card-title { font-size: 26px; font-weight: 700; line-height: 1.3; }
.banner-button-group { position: absolute; right: 2rem; bottom: 2rem; z-index: 2; display: flex; }
.banner-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 125px;
  height: 40px;
  border-radius: 20px;
  color: #fff;
  background: #fff3;
  backdrop-filter: saturate(180%) blur(20px);
  transition: all .3s;
}
.banner-button:hover { background: var(--primary); }
.banner-button svg { width: 20px; height: 20px; margin-right: 8px; }
.banner-button-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- 7. 标签条 ---------- */
.tag-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem .8rem;
  margin: .5rem 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  animation: fade-in-up .6s .1s backwards;
}
.tag-bar-hash { color: var(--primary); font-weight: 700; }
.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  font-size: .875rem;
  line-height: 1.5;
  transition: all .2s ease-in-out;
}
.tag-item:hover, .tag-item--selected {
  color: var(--primary-foreground);
  background: var(--primary);
  border-color: var(--primary);
}
.tag-item:hover .tag-count, .tag-item--selected .tag-count { color: var(--primary); background: #fff; }
.tag-item:hover .tag-punctuation { color: var(--primary-foreground); }
.tag-punctuation { color: var(--muted-foreground); font-size: .9rem; }
.tag-count {
  margin-left: 6px;
  padding: 0 6px;
  border-radius: 5px;
  font-size: .75rem;
  background: var(--muted);
  transition: all .2s ease-in-out;
}
.tag-more { margin-left: auto; font-size: .85rem; color: var(--muted-foreground); transition: color .3s; }
.tag-more:hover { color: var(--primary); }

/* ---------- 8. 文章卡片 ---------- */
.post-grid { display: flex; flex-wrap: wrap; gap: .625rem; margin-top: .5rem; }
.post-grid--double > .post-card { width: calc(50% - .3125rem); }
.post-grid--single > .post-card { width: 100%; }

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  cursor: pointer;
  opacity: 0;
  animation: fade-in-card .6s cubic-bezier(.25, .46, .45, .94) forwards;
  animation-delay: calc(min(var(--animation-order, 0), 10) * .1s);
  transition: all .3s ease-in-out;
}
.post-card:hover { border-color: var(--primary); box-shadow: var(--shadow-primary); }
.post-card:active { transform: scale(.97); }
.post-card:hover .post-bg { filter: brightness(.82); transform: scale(1.03); }
.post-card:hover .post-title a { color: var(--primary); }

.post-cover { position: relative; width: 100%; height: 225px; overflow: hidden; flex-shrink: 0; }
.post-cover--empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 16%, var(--card)), color-mix(in srgb, var(--primary) 4%, var(--card)));
}
.post-cover-mark { font-size: 3.5rem; font-weight: 700; color: color-mix(in srgb, var(--primary) 55%, transparent); }
.post-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity .6s, transform .6s, filter .6s;
}
/* 封面遮罩 + 居中标题（与参考站一致） */
.post-cover-mask {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(to bottom, #00000047 0%, #00000073 55%, #000000a6 100%);
  transition: opacity .35s;
}
.post-cover-link {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: 1rem 1.6rem;
  text-align: center;
  color: #fff;
  text-shadow: 0 2px 12px #00000073;
}
.post-cover-title {
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: transform .35s;
}
.post-cover-site { font-size: .75rem; opacity: .82; letter-spacing: .02em; }
.post-cover-icon { display: inline-flex; opacity: .85; }
.post-cover-icon svg { width: 16px; height: 16px; }
.post-card:hover .post-cover-mask { opacity: .72; }
.post-card:hover .post-cover-title { transform: translateY(-2px); }

.post-info { display: flex; flex-direction: column; flex-grow: 1; width: 100%; min-width: 0; padding: 18px 32px 20px; }
.post-tips { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; min-height: 24px; margin-bottom: .5rem; overflow: hidden; }

.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .7rem;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transition: all .2s;
}
.meta-badge svg { width: 11px; height: 11px; flex-shrink: 0; }
.meta-badge--pin { color: var(--primary); background: var(--primary-op); }
.meta-badge--new { color: var(--muted-foreground); background: var(--muted); }
.meta-badge--cat { color: var(--primary-foreground); background: var(--primary); }

.category-tip {
  position: relative;
  z-index: 2;
  font-size: .75rem;
  color: var(--muted-foreground);
  transition: color .3s;
}
.category-tip:hover { color: var(--primary); }

.post-title { margin: 0 0 .75rem; font-size: 1.3rem; font-weight: 700; line-height: 1.35; }
.post-title a {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .3s;
}
.post-title a::after { content: ""; position: absolute; inset: 0; z-index: 1; }

.post-excerpt {
  margin: 0 0 .75rem;
  font-size: .85rem;
  color: var(--muted-foreground);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  margin-top: auto;
  padding-top: .75rem;
}
.post-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.meta-tag {
  position: relative;
  z-index: 2;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: .7rem;
  background: var(--secondary);
  color: var(--muted-foreground);
  transition: all .25s;
}
.meta-tag:hover { background: var(--primary); color: var(--primary-foreground); }
.post-meta-right { display: flex; align-items: center; gap: .6rem; font-size: .75rem; color: var(--muted-foreground); }
.meta-stat { display: inline-flex; align-items: center; gap: 3px; }
.meta-stat svg { width: 13px; height: 13px; }

/* 单列横向 */
.post-card--single { flex-direction: row; }
.post-card--single .post-cover { width: 45%; height: auto; min-height: 190px; }
.post-card--single .post-info { width: 55%; padding: 2rem; }
.post-card--single .post-title { font-size: 1.5rem; }

/* ---------- 9. 分页 ---------- */
.pagination-nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  height: 2.5rem;
  margin: 1.5rem 0 .5rem;
}
.page-extend {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 5rem;
  height: 2.5rem;
  border-radius: 8px;
  color: var(--foreground);
  background: var(--card);
  border: 1px solid var(--border);
  transition: all .3s;
}
.page-extend svg { width: 18px; height: 18px; }
.page-extend.is-disabled { opacity: .4; pointer-events: none; }
.page-prev { position: absolute; left: 0; }
.page-next { position: absolute; right: 0; }
.page-extend:not(.is-disabled):hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--shadow-primary);
  transform: scale(1.03);
}
.page-tips { opacity: 0; white-space: nowrap; transition: all .3s; }
.page-tips-prev { margin-right: -32px; }
.page-tips-next { margin-left: -32px; }
.page-extend:hover .page-tips-prev { opacity: 1; margin-right: 2px; }
.page-extend:hover .page-tips-next { opacity: 1; margin-left: 2px; }

.pagination { display: flex; align-items: center; justify-content: center; gap: .5rem; }
.page-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  transition: all .3s;
}
.page-number:hover { color: var(--primary); border-color: var(--primary); box-shadow: var(--shadow-primary); }
.page-number.current {
  color: var(--primary-foreground);
  background: var(--primary);
  border-color: var(--primary);
  pointer-events: none;
}
.page-ellipsis { padding: 0 .2rem; color: var(--muted-foreground); }

/* ---------- 10. 侧边栏 ---------- */
.post-sidebar {
  display: flex;
  flex-direction: column;
  gap: .625rem;
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  animation: slide-in .6s .1s backwards;
}
.sidebar-sticky { display: flex; flex-direction: column; gap: .625rem; position: sticky; top: calc(var(--header-h) + .625rem); }

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  transition: background-color .3s, border-color .3s;
}
.card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: .85rem 1rem .5rem;
  font-weight: 700;
  font-size: .95rem;
}
.card-head-icon { display: inline-flex; color: var(--primary); }
.card-head-icon svg { width: 16px; height: 16px; }

/* 作者卡 */
.author-card { position: relative; border: none; border-radius: var(--radius); }
.author-card-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(-25deg, var(--primary), var(--primary-op-deep), var(--primary), var(--primary-op-deep));
  background-size: 400%;
  animation: gradient-shift 15s infinite;
  will-change: background-position;
}
@keyframes gradient-shift { 0% { background-position: 0%; } 50% { background-position: 100%; } 100% { background-position: 0%; } }

.author-card-body { position: relative; height: 236px; padding: 1rem 1.2rem; }

.author-avatar-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 88px; height: 88px;
  margin: 30px auto;
  transform-origin: bottom;
  transition: all .3s cubic-bezier(.69, .39, 0, 1.21);
}
.author-avatar, .author-avatar-fallback {
  width: 100%; height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #ffffff59;
  background: var(--muted);
  opacity: 0;
  animation: fade-in .6s forwards;
}
.author-avatar-fallback { display: flex; align-items: center; justify-content: center; font-size: 2.5rem; font-weight: 700; color: #fff; }
.author-status {
  position: absolute;
  right: -2px; bottom: -2px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: #10b981;
  border: 3px solid #fff;
  opacity: 0;
  transform: scale(1);
  transition: all .3s .2s;
  animation: fade-in .6s .2s forwards;
}
.author-card:hover .author-avatar-wrap,
.author-card:hover .author-status { opacity: 0; transform: scale(0); }

.author-intro {
  position: absolute;
  top: 50px; left: 0;
  width: 100%;
  padding: 1rem 1.2rem;
  color: #fff;
  opacity: 0;
  transition: all .3s;
}
.author-intro p { margin: .6rem 0; color: #fffc; line-height: 1.5; text-align: justify; }
.author-card:hover .author-intro { opacity: 1; }
.author-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: .8rem; }
.author-link {
  padding: 4px 12px;
  border-radius: 30px;
  font-size: .78rem;
  color: #fff;
  background: #ffffff33;
  transition: all .3s;
}
.author-link:hover { background: #fff; color: var(--primary); transform: scale(1.08); }

.author-bottom { position: absolute; left: 1.2rem; right: 1.2rem; bottom: 1.1rem; display: flex; align-items: center; justify-content: space-between; }
.author-name { color: #fff; font-size: 20px; font-weight: 700; line-height: 1; margin-bottom: 5px; }
.author-desc { color: #fff; opacity: .6; font-size: 12px; line-height: 1; }
.author-sayhi {
  padding: 2px 8px;
  border: none;
  border-radius: 12px;
  font-size: 12px;
  color: #fff;
  background: #ffffff33;
  cursor: pointer;
  transition: all .3s;
}
.author-sayhi:hover { background: #fff; color: var(--primary); transform: scale(1.15); }
.author-sayhi:active { opacity: .8; transform: scale(.8); }

/* 欢迎卡 */
.welcome-body { padding: .25rem 1rem 0; font-size: .88rem; line-height: 1.7; }
.welcome-body p { margin: .3rem 0; }
.welcome-body a { color: var(--primary); }
.welcome-meta { margin: .5rem 1rem 1rem; padding: .7rem .8rem; border-radius: 10px; background: var(--muted); font-size: .78rem; color: var(--muted-foreground); }
.welcome-line { display: block; }
.welcome-line b { color: var(--primary); }

/* 最近发布 */
.recent-list { padding: .25rem .6rem .7rem; }
.recent-item { display: flex; align-items: center; gap: 10px; padding: .45rem .5rem; border-radius: 10px; transition: background-color .25s; }
.recent-item:hover { background: var(--muted); }
.recent-item.is-current { background: var(--primary-op-light); }
.recent-cover { width: 56px; height: 40px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.recent-cover--empty { background: var(--muted); }
.recent-info { min-width: 0; }
.recent-title {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: .82rem;
  font-weight: 600;
}
.recent-date { font-size: .72rem; color: var(--muted-foreground); }

/* 标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: .45rem; padding: .25rem 1rem 1rem; }
.cloud-tag {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: calc(.75rem + min(var(--tag-weight, 1), 8) * .045rem);
  background: var(--muted);
  color: var(--muted-foreground);
  transition: all .25s;
}
.cloud-tag:hover { background: var(--primary); color: var(--primary-foreground); transform: translateY(-2px); }
.cloud-more { width: 100%; margin-top: .2rem; font-size: .78rem; color: var(--primary); }

/* 归档卡 */
.archive-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .4rem; padding: .25rem 1rem 1rem; }
.archive-cell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: .4rem .6rem;
  border-radius: 8px;
  background: var(--muted);
  font-size: .78rem;
  transition: all .25s;
}
.archive-cell:hover { background: var(--primary); color: var(--primary-foreground); }
.archive-cell-count { font-size: .72rem; opacity: .7; }

/* 站点统计 */
.stats-list { padding: .25rem 1rem 1rem; }
.stats-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .45rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: .85rem;
}
.stats-row:last-child { border-bottom: none; }
.stats-key { color: var(--muted-foreground); }
.stats-value { font-weight: 700; color: var(--primary); }

/* ---------- 11. 列表页页头 ---------- */
.page-hero {
  padding: 2.2rem 0 1.4rem;
  text-align: center;
  animation: fade-in-up .6s .1s backwards;
}
.page-hero-label { margin: 0 0 .3rem; font-size: .75rem; letter-spacing: .3rem; text-transform: uppercase; color: var(--primary); }
.page-hero-title { margin: 0; font-size: 2rem; font-weight: 700; }
.page-hero-desc { margin: .6rem 0 0; color: var(--muted-foreground); font-size: .9rem; }
.page-hero-avatar { width: 84px; height: 84px; border-radius: 50%; object-fit: cover; margin: 0 auto .8rem; border: 3px solid var(--card); box-shadow: var(--shadow-md); }

/* 分类 / 标签云 */
.cloud-wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .2rem;
  padding: 1rem .5rem 2rem;
  animation: fade-in-up .6s .2s backwards;
}
.cloud-item {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: .7rem;
  padding: .6rem .9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  font-size: calc(1rem + min(var(--tag-weight, 1), 8) * .06rem);
  transition: all .2s;
}
.cloud-item--big { font-size: 1.4rem; }
.cloud-item:hover { color: var(--primary-foreground); background: var(--primary); border-color: var(--primary); box-shadow: var(--shadow-primary); }
.cloud-item:hover .cloud-item-count { color: var(--primary); background: #fff; }
.cloud-item-count {
  min-width: 30px;
  padding: 2px 6px;
  border-radius: 8px;
  font-size: .8rem;
  text-align: center;
  background: var(--muted);
  transition: all .2s;
}

/* ---------- 12. 归档页 ---------- */
.archive-list { animation: fade-in-up .6s .2s backwards; }
.archive-year { margin-bottom: 1.5rem; }
.archive-year-label {
  display: inline-block;
  margin-bottom: .8rem;
  padding: .3rem 1rem;
  border-radius: 30px;
  background: var(--primary);
  color: var(--primary-foreground);
  font-size: 1.1rem;
  font-weight: 700;
}
.archive-month { margin: 0 0 1rem .4rem; padding-left: 1.2rem; border-left: 2px solid var(--border); }
.archive-month-label { margin-bottom: .5rem; font-weight: 700; color: var(--primary); }
.archive-items { display: flex; flex-wrap: wrap; gap: .5rem; }
.archive-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  width: calc(50% - .25rem);
  padding: .6rem .8rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  transition: all .25s;
}
.archive-item:hover { border-color: var(--primary); box-shadow: var(--shadow-primary); transform: translateX(3px); }
.archive-item-cover { width: 48px; height: 40px; border-radius: 8px; background-size: cover; background-position: center; flex-shrink: 0; }
.archive-item-body { min-width: 0; }
.archive-item-title {
  display: block;
  font-weight: 600;
  font-size: .9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.archive-item-meta { display: flex; gap: .6rem; font-size: .72rem; color: var(--muted-foreground); }

/* ---------- 13. 文章页 ---------- */
.post-hero { position: relative; margin: 0 0 1rem; padding: 3rem 0 2rem; overflow: hidden; border-radius: var(--radius); }
.post-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(22px) brightness(.62) saturate(1.1);
  transform: scale(1.15);
  animation: hero-in .8s ease-out backwards;
}
.post-hero--cover { padding: 4.5rem 0 3rem; }
.post-hero--cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, #00000080, transparent 70%); }
@keyframes hero-in { from { opacity: 0; transform: scale(1.25); } to { opacity: 1; transform: scale(1.15); } }
.post-hero-inner { position: relative; z-index: 2; padding: 0 2rem; }
.post-hero--cover .post-hero-inner { color: #fff; }
.post-hero-tips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: .8rem; }
.post-hero--cover .meta-badge--cat { background: #ffffff2e; color: #fff; backdrop-filter: blur(8px); }
.post-hero-title { margin: 0 0 .9rem; font-size: 2.2rem; font-weight: 700; line-height: 1.25; }
.post-hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; font-size: .8rem; color: var(--muted-foreground); }
.post-hero--cover .post-hero-meta { color: #ffffffcc; }
.hero-meta-item { display: inline-flex; align-items: center; gap: 5px; }
.hero-meta-item svg { width: 14px; height: 14px; }
.hero-meta-avatar { width: 20px; height: 20px; border-radius: 50%; object-fit: cover; }

.article-card {
  padding: 1.5rem 2rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  animation: fade-in-up .6s .1s backwards;
}
.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  margin-bottom: 1.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--border);
  font-size: .78rem;
  color: var(--muted-foreground);
}
.article-words { display: inline-flex; align-items: center; gap: 4px; }
.article-words svg { width: 14px; height: 14px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-left: auto; }

/* 正文排版 */
.prose { font-size: 1rem; line-height: 1.85; word-break: break-word; }
.prose > *:first-child { margin-top: 0; }
.prose h1, .prose h2, .prose h3, .prose h4 { margin: 1.8em 0 .7em; font-weight: 700; line-height: 1.35; scroll-margin-top: calc(var(--header-h) + 1rem); }
.prose h2 { font-size: 1.4rem; padding-bottom: .4rem; border-bottom: 1px solid var(--border); }
.prose h3 { font-size: 1.2rem; }
.prose h4 { font-size: 1.05rem; }
.prose p { margin: 1em 0; }
.prose a { color: var(--primary); border-bottom: 1px solid var(--primary-op); transition: all .25s; }
.prose a:hover { border-bottom-color: var(--primary); }
.prose img { margin: 1.2rem auto; border-radius: 10px; box-shadow: var(--shadow-md); cursor: zoom-in; }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li { margin: .35em 0; }
.prose blockquote {
  margin: 1.2rem 0;
  padding: .8rem 1.1rem;
  border-left: 4px solid var(--primary);
  border-radius: 0 10px 10px 0;
  background: var(--primary-op-light);
  color: var(--muted-foreground);
}
.prose blockquote p { margin: .3rem 0; }
.prose hr { margin: 2rem 0; border: none; border-top: 1px dashed var(--border); }
.prose code {
  padding: .15em .45em;
  border-radius: 5px;
  font-size: .88em;
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, Menlo, monospace;
  background: var(--muted);
  color: var(--primary);
}
.prose pre {
  margin: 1.2rem 0;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  overflow-x: auto;
  background: #1d1e22;
  color: #e6e6e6;
  font-size: .85rem;
  line-height: 1.65;
  position: relative;
}
:root.dark .prose pre { background: #121216; border: 1px solid var(--border); }
.prose pre code { padding: 0; background: none; color: inherit; font-size: inherit; }
.prose table { width: 100%; margin: 1.2rem 0; border-collapse: collapse; font-size: .9rem; }
.prose th, .prose td { padding: .55rem .8rem; border: 1px solid var(--border); text-align: left; }
.prose th { background: var(--muted); font-weight: 700; }
.prose tbody tr:hover { background: var(--primary-op-light); }
.prose figure { margin: 1.2rem 0; }
.prose figcaption { margin-top: .5rem; text-align: center; font-size: .8rem; color: var(--muted-foreground); }

.adjacent { display: flex; gap: .6rem; margin-top: 2rem; padding-top: 1.2rem; border-top: 1px dashed var(--border); }
.adjacent-item {
  flex: 1;
  min-width: 0;
  padding: .8rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all .3s;
}
.adjacent-item:hover { border-color: var(--primary); box-shadow: var(--shadow-primary); }
.adjacent-item--next { text-align: right; }
.adjacent-empty { flex: 1; }
.adjacent-k { display: block; font-size: .72rem; color: var(--muted-foreground); }
.adjacent-t { display: block; font-weight: 600; font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.post-sidebar-wrap { display: flex; flex-direction: column; gap: .625rem; width: var(--sidebar-w); min-width: var(--sidebar-w); }
.toc-card { animation: slide-in .6s .1s backwards; }
.toc-body { max-height: 46vh; overflow-y: auto; padding: .25rem 1rem 1rem; }
.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list .toc-list { padding-left: .9rem; }
.toc-link {
  display: block;
  padding: .28rem .5rem;
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  font-size: .82rem;
  color: var(--muted-foreground);
  transition: all .25s;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.toc-link:hover { color: var(--primary); background: var(--primary-op-light); }
.toc-link.is-active { color: var(--primary); border-left-color: var(--primary); background: var(--primary-op-light); font-weight: 600; }
.toc-empty { font-size: .82rem; color: var(--muted-foreground); }

.comments-card { margin-top: .625rem; padding: 1rem 1.5rem 1.5rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }

/* ---------- 14. 相册 ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .6rem; }
.gallery-item {
  position: relative;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
  transition: all .3s;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.gallery-item:hover { border-color: var(--primary); box-shadow: var(--shadow-primary); }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: .5rem .7rem;
  font-size: .78rem;
  color: #fff;
  background: linear-gradient(to top, #000000b3, transparent);
  opacity: 0;
  transition: opacity .3s;
}
.gallery-item:hover .gallery-cap { opacity: 1; }

.lightbox { position: fixed; inset: 0; z-index: 3000; display: flex; align-items: center; justify-content: center; background: #000000e6; backdrop-filter: blur(6px); }
.lightbox[hidden] { display: none; }
.lightbox-stage { margin: 0; max-width: 90vw; max-height: 88vh; text-align: center; }
.lightbox-stage img { max-width: 90vw; max-height: 80vh; object-fit: contain; border-radius: 8px; animation: fade-in .3s; }
.lightbox-stage figcaption { margin-top: .8rem; color: #ffffffcc; font-size: .85rem; }
.lightbox-btn {
  position: absolute;
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: none;
  border-radius: 50%;
  background: #ffffff1f;
  color: #fff;
  cursor: pointer;
  transition: all .3s;
}
.lightbox-btn svg { width: 22px; height: 22px; }
.lightbox-btn:hover { background: var(--primary); transform: scale(1.1); }
.lightbox-btn--close { top: 24px; right: 24px; }
.lightbox-btn--prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-btn--next { right: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-btn--prev:hover, .lightbox-btn--next:hover { transform: translateY(-50%) scale(1.1); }

/* ---------- 15. 页脚 ---------- */
.site-footer { margin-top: 1.5rem; background: linear-gradient(180deg, transparent 0, var(--card) 25%); overflow-x: hidden; }
.footer-wrap { width: 100%; padding-bottom: 0; }
.footer-social-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .5rem; padding: 1.6rem 0 1rem; }
.social-side { display: flex; align-items: center; }
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  margin: 1rem 20px;
  border-radius: 3rem;
  background: var(--foreground);
  color: var(--card);
  transition: all .3s;
}
.social-link:hover { background: var(--primary); color: #fff; transform: scale(1.2); }
.social-icon-inner { display: flex; }
.social-icon-inner svg { width: 1.2rem; height: 1.2rem; }
.footer-center-img {
  width: 50px; height: 50px;
  margin: 0 1rem;
  border-radius: 50%;
  object-fit: cover;
  transition: all .5s cubic-bezier(0, 0, 0, 1.29);
}
.footer-center-img:hover { transform: scale(1.2); }

.footer-link-grid { display: flex; flex-wrap: wrap; justify-content: space-around; gap: 1.5rem 0; max-width: 1200px; margin: 0 auto; padding: .5rem 2rem 1rem; }
.footer-group { min-width: 130px; text-align: left; }
.footer-title { margin: 0 0 .8rem 4px; font-size: 1.05rem; font-weight: 700; color: var(--muted-foreground); }
.footer-links { display: flex; flex-direction: column; }
.footer-item {
  width: fit-content;
  max-width: 160px;
  margin: 0 10px .5rem 0;
  padding: 0 4px;
  border-radius: 7px;
  font-size: .92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: all .2s;
}
.footer-item:hover { color: #fff; background: var(--primary); }

.footer-bottom-bar { margin-top: 1rem; padding: 1.2rem 1rem; background: var(--muted); }
.bar-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}
.bar-left { display: flex; flex-direction: column; gap: .4rem; font-size: .88rem; }
.copyright a { color: var(--primary); }
.footer-heart { display: inline-flex; align-items: center; gap: 4px; font-size: .78rem; color: var(--muted-foreground); }
.footer-heart .heart { display: inline-block; color: var(--red); animation: heartbeat 1.3s ease-in-out infinite; }
.footer-heart svg { width: 14px; height: 14px; animation: spin-slow 8s linear infinite; }
@keyframes heartbeat { 0% { transform: scale(1); } 14% { transform: scale(1.3); } 28% { transform: scale(1); } 42% { transform: scale(1.3); } 70% { transform: scale(1); } }
@keyframes spin-slow { to { transform: rotate(360deg); } }
.bar-right { display: flex; align-items: center; gap: 1rem; }
.bar-link { font-size: .9rem; font-weight: 700; transition: color .3s; }
.bar-link:hover { color: var(--primary); }
.record-info { font-size: .78rem; color: var(--muted-foreground); }
.record-link:hover { color: var(--primary); }

/* ---------- 16. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 900;
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  color: var(--foreground);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: all .35s cubic-bezier(0, 0, 0, 1.29);
}
.to-top svg { width: 20px; height: 20px; }
.to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover { background: var(--primary); color: #fff; transform: translateY(-3px) scale(1.1); }

/* ---------- 17. 空状态与错误页 ---------- */
.empty { padding: 3rem 1rem; text-align: center; color: var(--muted-foreground); }
.error-wrap { padding: 4rem 1rem; text-align: center; }
.error-code { font-size: 5rem; font-weight: 700; color: var(--primary); line-height: 1; animation: float-y 3s ease-in-out infinite; }
.error-text { margin: 1rem 0 1.6rem; color: var(--muted-foreground); }
.error-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: .6rem 1.4rem;
  border-radius: 30px;
  background: var(--primary);
  color: #fff;
  transition: all .3s;
}
.error-btn svg { width: 16px; height: 16px; }
.error-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-primary); }

/* ---------- 18. 通用关键帧 ---------- */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes fade-in-card { from { opacity: 0; } to { opacity: 1; } }
@keyframes fade-in-up { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slide-in { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float-y { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* 滚动入场 */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s cubic-bezier(.25, .46, .45, .94), transform .6s cubic-bezier(.25, .46, .45, .94); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal, .no-js .post-card { opacity: 1 !important; transform: none !important; animation: none !important; }

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1100px) {
  .post-sidebar, .post-sidebar-wrap { display: none; }
}
@media (max-width: 900px) {
  .home-top { flex-direction: column; height: auto; }
  .home-left, .home-right { height: 300px; }
  .random-banner { height: 100%; }
  .post-grid--double > .post-card { width: 100%; }
  .post-card--single { flex-direction: column; }
  .post-card--single .post-cover { width: 100%; height: 200px; min-height: 0; }
  .post-card--single .post-info { width: 100%; padding: 18px 24px 20px; }
  .archive-item { width: 100%; }
  .menus-items { display: none; }
  .banner-title { top: 2rem; left: 1.5rem; }
  .banner-title-big { font-size: 1.7rem; }
  .post-hero-title { font-size: 1.6rem; }
  .article-card { padding: 1.2rem 1.1rem 1.5rem; }
  .site-inner { padding: 0 1rem 1rem; }
  .footer-link-grid { gap: 1.2rem; padding: 1rem; }
}
@media (min-width: 901px) {
  .nav-toggle { display: none; }
}
@media (max-width: 600px) {
  .category-group { flex-direction: column; }
  .category-item:hover { flex: 1; }
  .post-info { padding: 16px 18px 18px; }
  .post-title { font-size: 1.15rem; }
  .pagination .page-number:nth-child(n + 6) { display: none; }
  .footer-social-bar { gap: .2rem; }
  .social-link { margin: 1rem 10px; }
}

/* ---------- 20. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .post-card, .reveal { opacity: 1 !important; transform: none !important; }
}