/* ==========================================================================
   交互增强层 · 参考 Josh Comeau / Rauno Freiberg / Brittany Chiang
   1) 自定义光标  2) 光标聚光  3) 滚动入场  4) 卡片倾斜  5) 磁吸按钮
   6) 页面过渡    7) 顶栏智能隐藏  8) 自定义滚动条  9) 颗粒质感
   ========================================================================== */

/* ---------- 颗粒质感 ---------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

[data-theme="dark"] body::after { opacity: 0.05; }

/* ---------- 自定义滚动条 ---------- */
html {
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 58, 237, 0.45) transparent;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.55), rgba(37, 99, 235, 0.55));
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background-color: rgba(124, 58, 237, 0.8); background-clip: content-box; }

/* ---------- 自定义光标 ---------- */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 999;
  pointer-events: none;
  border-radius: 50%;
  opacity: 0;
  transform: translate3d(-100px, -100px, 0);
  will-change: transform;
}

.cursor-dot {
  width: 6px; height: 6px;
  margin: -3px 0 0 -3px;
  background: var(--brand);
  transition: opacity 0.2s ease, transform 0.08s ease;
}

.cursor-ring {
  width: 34px; height: 34px;
  margin: -17px 0 0 -17px;
  border: 1.5px solid rgba(124, 58, 237, 0.55);
  transition: width 0.22s cubic-bezier(0.34, 1.56, 0.64, 1),
              height 0.22s cubic-bezier(0.34, 1.56, 0.64, 1),
              margin 0.22s cubic-bezier(0.34, 1.56, 0.64, 1),
              background-color 0.22s ease,
              border-color 0.22s ease,
              opacity 0.2s ease;
}

.cursor-ring.is-hover {
  width: 58px; height: 58px;
  margin: -29px 0 0 -29px;
  background: rgba(124, 58, 237, 0.1);
  border-color: rgba(124, 58, 237, 0.75);
}

.cursor-ring.is-text {
  width: 4px; height: 26px;
  margin: -13px 0 0 -2px;
  border-radius: 2px;
  background: rgba(124, 58, 237, 0.55);
  border-color: transparent;
}

.cursor-hidden .cursor-dot,
.cursor-hidden .cursor-ring { opacity: 0; }

@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- 首屏聚光（跟随光标） ---------- */
.hero2 {
  position: relative;
  overflow: hidden;
  padding: 76px 0 40px;
}

.hero2::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 30%), rgba(124, 58, 237, 0.16), transparent 65%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.hero2.is-active::before { opacity: 1; }

.hero2-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  font-size: 12.5px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.status-badge i {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: pulseDot 2.2s infinite;
}

@keyframes pulseDot {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.55); }
  70% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero2-title {
  margin: 0 0 14px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.14;
  letter-spacing: -1.2px;
  font-weight: 800;
}

.hero2-title .grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 逐字入场 */
.char {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.5em) rotate(4deg);
  animation: charIn 0.62s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes charIn {
  to { opacity: 1; transform: translateY(0) rotate(0); }
}

.hero2-sub {
  margin: 0 0 26px;
  max-width: 520px;
  font-size: 16.5px;
  color: var(--text-2);
}

.hero2-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }

.hero2-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13px;
  color: var(--muted);
}

.hero2-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero2-meta span::before {
  content: "";
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--brand-3);
}

.hero2-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.avatar-ring {
  position: relative;
  width: 168px; height: 168px;
  display: grid;
  place-items: center;
}

.avatar-ring::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #7c3aed, #2563eb, #06b6d4, #7c3aed);
  animation: spin 9s linear infinite;
  opacity: 0.85;
}

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

.avatar-ring img {
  position: relative;
  width: 150px; height: 150px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--bg);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.avatar-ring:hover img { transform: scale(1.06) rotate(-3deg); }

.hero2-socials { display: flex; gap: 10px; }

.social-btn {
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.social-btn:hover {
  color: var(--brand);
  border-color: rgba(124, 58, 237, 0.4);
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 12px 24px -10px rgba(124, 58, 237, 0.6);
}

/* ---------- 滚动入场 ---------- */
/* 只有 JS 可用时才隐藏，避免脚本失效导致内容不可见 */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.62s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.62s cubic-bezier(0.22, 1, 0.36, 1);
}

html.js [data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 卡片：倾斜 + 光斑 ---------- */
.tilt {
  transform-style: preserve-3d;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}

.tilt.is-tilting { transition: transform 0.08s linear; }

.card-glare {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.28s ease;
  background: radial-gradient(220px circle at var(--gx, 50%) var(--gy, 50%), rgba(255, 255, 255, 0.32), transparent 60%);
}

[data-theme="dark"] .card-glare {
  background: radial-gradient(220px circle at var(--gx, 50%) var(--gy, 50%), rgba(124, 58, 237, 0.28), transparent 62%);
}

.post-card:hover .card-glare,
.project-card:hover .card-glare { opacity: 1; }

/* ---------- 磁吸按钮 ---------- */
.magnetic { will-change: transform; }

/* ---------- 精选文章大卡 ---------- */
.post-feature {
  position: relative;
  display: block;
  margin-bottom: 22px;
  padding: 34px 36px;
  border-radius: 24px;
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(124, 58, 237, 0.13), transparent 58%),
    radial-gradient(120% 140% at 100% 100%, rgba(6, 182, 212, 0.12), transparent 55%),
    var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
}

.post-feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.post-feature::after {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 3px;
  background: var(--grad);
}

.post-feature .chip { margin-bottom: 14px; }

.post-feature h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.6px;
}

.post-feature p {
  margin: 0 0 18px;
  color: var(--text-2);
  font-size: 15.5px;
  max-width: 720px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-feature-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}

.post-feature-meta .go {
  margin-left: auto;
  color: var(--brand);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.post-feature .go .arrow { transition: transform 0.25s ease; }
.post-feature:hover .go .arrow { transform: translateX(6px); }

/* ---------- 首页项目条 ---------- */
.projects-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}

.strip-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.25s ease, border-color 0.25s ease;
}

.strip-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: var(--shadow-lg);
}

.strip-top { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.strip-card h3 { margin: 2px 0 0; font-size: 16px; letter-spacing: -0.2px; }
.strip-card h3 a { color: var(--text); }
.strip-card h3 a:hover { color: var(--brand); }
.strip-card p { margin: 0; font-size: 13.5px; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.strip-card .arrow { margin-top: auto; color: var(--brand); font-size: 13px; }

/* ---------- 项目页筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.filter-btn {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.18s ease;
}

.filter-btn:hover { color: var(--brand); border-color: rgba(124, 58, 237, 0.35); }

.filter-btn.is-active {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(124, 58, 237, 0.9);
}

.project-card.is-hidden {
  display: none;
}

.project-card.is-appear {
  animation: cardIn 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

/* ---------- 相关文章 ---------- */
.related {
  margin-top: 46px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.related h3 {
  margin: 0 0 16px;
  font-size: 15px;
  letter-spacing: 0.5px;
  color: var(--muted);
  text-transform: uppercase;
}

.related-list { display: grid; gap: 10px; }

.related-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  transition: all 0.18s ease;
}

.related-item:hover {
  border-color: rgba(124, 58, 237, 0.35);
  transform: translateX(4px);
}

.related-item b { font-weight: 500; font-size: 14.5px; }
.related-item time { font-size: 12.5px; color: var(--muted); flex: 0 0 auto; }

/* ---------- 顶栏智能隐藏 ---------- */
.site-header {
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.2s ease, background 0.2s ease;
}

.site-header.is-hidden { transform: translateY(-100%); }

/* ---------- 页面过渡 ---------- */
.page-main { animation: pageIn 0.5s cubic-bezier(0.22, 1, 0.36, 1); }

@keyframes pageIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

body.is-leaving .page-main {
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

/* 主题切换：圆形扩散（View Transitions） */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}

::view-transition-new(root) {
  animation: themeReveal 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes themeReveal {
  from { clip-path: circle(0% at var(--tx, 90%) var(--ty, 4%)); }
  to { clip-path: circle(140% at var(--tx, 90%) var(--ty, 4%)); }
}

/* ---------- 回到顶部：环形进度 ---------- */
.to-top { overflow: visible; }

.to-top svg.ring {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  transform: rotate(-90deg);
  pointer-events: none;
}

.to-top svg.ring circle {
  fill: none;
  stroke: var(--brand);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.65;
}

/* ---------- 移动端收敛 ---------- */
@media (max-width: 860px) {
  .hero2-inner { grid-template-columns: 1fr; gap: 30px; }
  .hero2-right { flex-direction: row; justify-content: flex-start; gap: 22px; }
  .avatar-ring { width: 108px; height: 108px; }
  .avatar-ring img { width: 96px; height: 96px; }
  .post-feature { padding: 24px; }
  .hero2 { padding-top: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .char { animation: none; opacity: 1; transform: none; }
  [data-reveal] { opacity: 1; transform: none; }
  .avatar-ring::before { animation: none; }
  .cursor-dot, .cursor-ring { display: none; }
}

/* ==========================================================================
   第二轮：阅读进度环 / 代码行号 / 评论 / 共享元素过渡
   ========================================================================== */

/* ---------- 阅读进度环 ---------- */
.reading-ring {
  position: fixed;
  right: 24px;
  bottom: 84px;
  z-index: 44;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px) scale(0.92);
  transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.reading-ring.is-visible { opacity: 1; transform: none; }

.reading-ring svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.reading-ring circle {
  fill: none;
  stroke-width: 2.6;
}

.reading-ring .bg { stroke: var(--border-strong); }
.reading-ring .fg {
  stroke: #7c3aed;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.14s linear;
}

.reading-ring span {
  position: relative;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: -0.2px;
}

@media (max-width: 860px) {
  .reading-ring { display: none; }
}

/* ---------- 代码行号 ---------- */
.has-lines code { counter-reset: cl; }

.has-lines .cl {
  display: block;
  position: relative;
  padding-left: 2.7em;
  min-height: 1.2em;
}

.has-lines .cl::before {
  counter-increment: cl;
  content: counter(cl);
  position: absolute;
  left: 0;
  width: 2em;
  text-align: right;
  color: rgba(148, 163, 184, 0.38);
  font-variant-numeric: tabular-nums;
  user-select: none;
  -webkit-user-select: none;
  transition: color 0.15s ease;
}

.has-lines .cl:hover::before { color: rgba(167, 139, 250, 0.95); }

/* ---------- 评论区 ---------- */
.comments {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.comments h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  letter-spacing: -0.1px;
}

.comments h3::before {
  content: "";
  display: inline-block;
  width: 4px; height: 15px;
  margin-right: 9px;
  border-radius: 3px;
  background: var(--grad);
  vertical-align: -1px;
}

.comments-tip {
  margin: 0 0 18px;
  font-size: 13px;
  color: var(--muted);
}

.giscus { min-height: 140px; }

.giscus iframe { border-radius: 14px !important; }

/* ---------- 跨页面共享元素过渡（卡片标题 → 文章标题） ---------- */
@view-transition {
  navigation: auto;
}

::view-transition-old(post-title),
::view-transition-new(post-title) {
  animation-duration: 0.42s;
  animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ==========================================================================
   第三轮：归档页 / 分享栏 / 字号 / 移动目录 / 阅读位置 / 命令面板 / 代码语言与折叠
   ========================================================================== */

/* ---------- 网格防溢出（长代码 / 长链接不再撑宽页面） ---------- */
.post-layout > * { min-width: 0; }
.post-main { min-width: 0; overflow-x: clip; }
.markdown-body pre { max-width: 100%; }
.markdown-body a { word-break: break-word; }

@media (max-width: 1024px) {
  .post-layout { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .markdown-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 13.5px;
  }
  .markdown-body pre { font-size: 12.5px; padding: 14px 16px; }
  .has-lang pre { padding-top: 34px; }
  .has-lines .cl { padding-left: 2.4em; }
}

/* ==========================================================================
   背景：点阵星链（粒子 + 连线 + 鼠标吸附）
   ========================================================================== */

.bg-deco {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

/* 静态色晕：给页面一点颜色，但不参与动画 */
.bg-tint {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 45% at 8% 0%, rgba(124, 58, 237, 0.16), transparent 62%),
    radial-gradient(55% 42% at 95% 8%, rgba(37, 99, 235, 0.14), transparent 64%),
    radial-gradient(60% 40% at 50% 108%, rgba(6, 182, 212, 0.13), transparent 66%);
}

[data-theme="dark"] .bg-tint {
  background:
    radial-gradient(60% 45% at 8% 0%, rgba(124, 58, 237, 0.26), transparent 62%),
    radial-gradient(55% 42% at 95% 8%, rgba(37, 99, 235, 0.22), transparent 64%),
    radial-gradient(60% 40% at 50% 108%, rgba(6, 182, 212, 0.16), transparent 66%);
}

/* 网格（跟随鼠标微位移） */
.bg-grid {
  position: absolute;
  inset: -14%;
  background-image:
    linear-gradient(to right, rgba(17, 24, 39, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17, 24, 39, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 74% 60% at 50% 24%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 74% 60% at 50% 24%, #000 30%, transparent 78%);
  transform: translate3d(var(--bgx, 0px), var(--bgy, 0px), 0);
  transition: transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] .bg-grid {
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

/* 星链画布 */
#constellation {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
}

[data-theme="dark"] #constellation { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  .bg-grid { transition: none; }
  .bg-deco { --bgx: 0px; --bgy: 0px; }
}

/* ==========================================================================
   第四轮：面包屑 / 标题锚点 / 订阅页 / 标签页 / 版权声明
   ========================================================================== */

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 12.5px;
  color: var(--muted);
}

.crumbs a { color: var(--muted); transition: color 0.15s ease; }
.crumbs a:hover { color: var(--brand); }
.crumbs .sep { opacity: 0.45; }
.crumbs .cur { color: var(--text-2); max-width: 46vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 标题锚点 ---------- */
.markdown-body h2,
.markdown-body h3 { position: relative; }

.heading-anchor {
  margin-left: 8px;
  color: var(--brand);
  opacity: 0;
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.15s ease;
  font-size: 0.85em;
}

.markdown-body h2:hover .heading-anchor,
.markdown-body h3:hover .heading-anchor,
.heading-anchor:focus { opacity: 0.55; }

.heading-anchor:hover { opacity: 1 !important; }

@media (hover: none) {
  .heading-anchor { opacity: 0; }
}

/* ---------- 版权声明 ---------- */
.license {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 26px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px dashed var(--border-strong);
  background: var(--bg-soft);
}

.license-badge {
  flex: 0 0 auto;
  padding: 2px 9px;
  border-radius: 6px;
  background: rgba(124, 58, 237, 0.12);
  color: var(--brand);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.license p { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--muted); }
.license a { color: var(--text-2); text-decoration: underline; text-underline-offset: 2px; }
.license a:hover { color: var(--brand); }

/* ---------- 订阅页 ---------- */
.sub-card {
  display: flex;
  gap: 22px;
  padding: 28px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: radial-gradient(120% 140% at 0% 0%, rgba(124, 58, 237, 0.1), transparent 55%), var(--surface);
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
}

.sub-badge {
  flex: 0 0 auto;
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--grad);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.5px;
  box-shadow: 0 12px 26px -12px rgba(124, 58, 237, 0.9);
}

.sub-body h2 { margin: 0 0 8px; font-size: 19px; }
.sub-body p { margin: 0 0 16px; color: var(--text-2); font-size: 14px; line-height: 1.7; }

.sub-url {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.sub-url code {
  flex: 1 1 320px;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--code-bg);
  color: #a5b4fc;
  font-size: 12.5px;
  font-family: "Cascadia Code", Consolas, monospace;
  overflow-x: auto;
  white-space: nowrap;
}

.sub-readers { display: flex; flex-wrap: wrap; gap: 10px; }

.sub-help h2 { margin: 0 0 14px; font-size: 18px; }

.sub-steps { margin: 0 0 20px; padding-left: 20px; color: var(--text-2); font-size: 14.5px; line-height: 2; }
.sub-steps b { color: var(--text); }

.sub-note {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.2);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
}

.sub-note b { color: var(--text); }
.sub-foot { margin-top: 22px; font-size: 13px; color: var(--muted); }
.sub-foot a { color: var(--brand); text-decoration: underline; text-underline-offset: 2px; }

@media (max-width: 720px) {
  .sub-card { flex-direction: column; padding: 22px; }
  .sub-badge { width: 48px; height: 48px; font-size: 13px; }
}

/* ---------- 标签页 ---------- */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.tag-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px;
  transition: all 0.16s ease;
}

.tag-pill em {
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
  background: var(--bg-soft);
  padding: 0 6px;
  border-radius: 5px;
}

.tag-pill:hover {
  color: var(--brand);
  border-color: rgba(124, 58, 237, 0.35);
  transform: translateY(-1px);
}

.tag-section { margin-bottom: 26px; }

.tag-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  margin-bottom: 6px;
  border-bottom: 1px dashed var(--border);
}

.tag-head h2 { margin: 0; font-size: 17px; letter-spacing: -0.2px; }

.tag-list { list-style: none; margin: 0; padding: 0; }
.tag-list li { border-bottom: 1px solid var(--border); }
.tag-list li:last-child { border-bottom: none; }

.tag-list a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 9px 2px;
  color: var(--text);
  font-size: 14px;
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.tag-list a:hover { color: var(--brand); padding-left: 6px; }
.tag-list time { flex: 0 0 76px; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.tag-list span { flex: 1; }

/* ---------- button 版社交按钮重置 ---------- */
button.social-btn { padding: 0; font-family: inherit; cursor: pointer; }