/* ==========================================================================
   拾光笔记 — 设计系统
   参考：saul-blog.pages.dev（Astro · Firefly 主题）
   色板基于 oklch + hue 变量，改一个 --hue 即可整站换色
   ========================================================================== */

/* ---------------------------------------------------------------- Tokens */
:root {
  --hue: 250;
  --radius-large: 1rem;
  --page-width: 100rem;
  --grid-sidebar-width: 17.5rem;
  --banner-height-home: 65vh;
  --banner-height-non-home: max(45vh, 380px);
  --banner-height: var(--banner-height-home);
  --content-delay: .15s;
  --navbar-blur: 12px;

  --ease-standard: cubic-bezier(.4, 0, .2, 1);
  --ease-decelerate: cubic-bezier(.25, .46, .45, .94);
  --ease-accelerate: cubic-bezier(.55, .055, .675, .19);

  /* 浅色 */
  --primary: oklch(.7 .14 var(--hue));
  --page-bg: oklch(.95 .01 var(--hue));
  --card-bg: #fff;
  --card-bg-transparent: rgb(255 255 255 / .72);
  --btn-content: oklch(.55 .12 var(--hue));
  --btn-regular-bg: oklch(.95 .025 var(--hue));
  --btn-regular-bg-hover: oklch(.9 .05 var(--hue));
  --btn-regular-bg-active: oklch(.85 .08 var(--hue));
  --btn-plain-bg-hover: oklch(.95 .025 var(--hue));
  --btn-plain-bg-active: oklch(.98 .01 var(--hue));
  --btn-card-bg-hover: oklch(.98 .005 var(--hue));
  --btn-card-bg-active: oklch(.9 .03 var(--hue));
  --deep-text: oklch(.25 .02 var(--hue));
  --title-active: oklch(.6 .1 var(--hue));
  --line-divider: rgba(0, 0, 0, .08);
  --line-color: rgba(0, 0, 0, .1);
  --meta-divider: rgba(0, 0, 0, .2);
  --content-meta: rgba(0, 0, 0, .7);
  --inline-code-bg: var(--btn-regular-bg);
  --inline-code-color: var(--btn-content);
  --muted: oklch(.93 .015 var(--hue));
  --selection-bg: oklch(.9 .05 var(--hue));
  --codeblock-bg: oklch(.17 .015 var(--hue));
  --codeblock-topbar-bg: oklch(.3 .02 var(--hue));
  --license-block-bg: rgba(0, 0, 0, .03);
  --link-underline: oklch(.93 .04 var(--hue));
  --link-hover: oklch(.95 .025 var(--hue));
  --link-active: oklch(.9 .05 var(--hue));
  --float-panel-bg: #fff;
  --card-shadow: 0 1px 2px rgba(0, 0, 0, .04);
  --panel-shadow: 0 12px 40px rgba(0, 0, 0, .12);
  --toc-badge-bg: oklch(.9 .045 var(--hue));
  --toc-btn-hover: oklch(.92 .05 var(--hue));
  --toc-indicator-bg: oklch(.92 .015 var(--hue));
  --toc-item-active: oklch(.7 .13 var(--hue));
  --scrollbar-bg: rgba(0, 0, 0, .28);
  --scrollbar-bg-hover: rgba(0, 0, 0, .42);

  --text-90: color-mix(in oklab, var(--deep-text) 92%, transparent);
  --text-75: color-mix(in oklab, var(--deep-text) 75%, transparent);
  --text-50: color-mix(in oklab, var(--deep-text) 50%, transparent);
  --text-30: color-mix(in oklab, var(--deep-text) 30%, transparent);

  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-title: "Zen Maru Gothic", "PingFang SC", "Microsoft YaHei", var(--font-body);
  --font-code: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

:root.dark {
  --primary: oklch(.75 .14 var(--hue));
  --page-bg: oklch(.16 .014 var(--hue));
  --card-bg: oklch(.23 .015 var(--hue));
  --card-bg-transparent: rgb(23 23 23 / .72);
  --btn-content: oklch(.75 .1 var(--hue));
  --btn-regular-bg: oklch(.33 .035 var(--hue));
  --btn-regular-bg-hover: oklch(.38 .04 var(--hue));
  --btn-regular-bg-active: oklch(.43 .045 var(--hue));
  --btn-plain-bg-hover: oklch(.3 .035 var(--hue));
  --btn-plain-bg-active: oklch(.27 .025 var(--hue));
  --btn-card-bg-hover: oklch(.3 .03 var(--hue));
  --btn-card-bg-active: oklch(.35 .035 var(--hue));
  --deep-text: oklch(.94 .01 var(--hue));
  --title-active: oklch(.8 .09 var(--hue));
  --line-divider: rgba(255, 255, 255, .08);
  --line-color: rgba(255, 255, 255, .1);
  --meta-divider: rgba(255, 255, 255, .2);
  --content-meta: rgba(255, 255, 255, .6);
  --muted: oklch(.25 .015 var(--hue));
  --selection-bg: oklch(.4 .08 var(--hue));
  --codeblock-bg: oklch(.17 .015 var(--hue));
  --codeblock-topbar-bg: oklch(.12 .015 var(--hue));
  --license-block-bg: var(--codeblock-bg);
  --link-underline: oklch(.4 .08 var(--hue));
  --link-hover: oklch(.4 .08 var(--hue));
  --link-active: oklch(.35 .07 var(--hue));
  --float-panel-bg: oklch(.19 .015 var(--hue));
  --card-shadow: 0 1px 2px rgba(0, 0, 0, .18);
  --panel-shadow: 0 12px 40px rgba(0, 0, 0, .5);
  --toc-badge-bg: var(--btn-regular-bg);
  --toc-btn-hover: oklch(.28 .04 var(--hue));
  --toc-indicator-bg: oklch(.28 .04 var(--hue));
  --toc-item-active: oklch(.8 .1 var(--hue));
  --scrollbar-bg: rgba(255, 255, 255, .28);
  --scrollbar-bg-hover: rgba(255, 255, 255, .42);
  --text-90: color-mix(in oklab, var(--deep-text) 94%, transparent);
  --text-75: color-mix(in oklab, var(--deep-text) 78%, transparent);
  --text-50: color-mix(in oklab, var(--deep-text) 55%, transparent);
  --text-30: color-mix(in oklab, var(--deep-text) 32%, transparent);
}

/* ------------------------------------------------------------------ Base */
*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 14px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}
@media (min-width: 768px) {
  html { font-size: 16px; }
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--page-bg);
  color: var(--text-90);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s var(--ease-standard), color .25s var(--ease-standard);
}

body.no-scroll { overflow: hidden; }

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.35; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; border: none; background: none; cursor: pointer; }
input { font: inherit; }
[data-theme-icon="system"] { display: block; }
svg { display: block; }

::selection { background: var(--selection-bg); color: var(--text-90); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-bg);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-bg-hover); }

.text-90 { color: var(--text-90); }
.text-75 { color: var(--text-75); }
.text-50 { color: var(--text-50); }
.text-30 { color: var(--text-30); }
.text-primary { color: var(--primary); }

/* ------------------------------------------------------------ Animations */
@keyframes onload-fade-in {
  0% { opacity: 0; transform: translateY(1.5rem); }
  100% { opacity: 1; transform: translateY(0); }
}
.onload-animation {
  animation: onload-fade-in .3s var(--ease-decelerate) backwards;
  animation-delay: var(--delay, 0ms);
}

.reveal { opacity: 1; transform: none; }
html.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .5s var(--ease-decelerate), transform .5s var(--ease-decelerate);
  transition-delay: var(--delay, 0ms);
}
html.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .onload-animation, .reveal { animation: none; opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes bounce-arrow {
  0%, 100% { transform: translateY(0); opacity: .75; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ------------------------------------------------------- Progress bar */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--primary), color-mix(in oklab, var(--primary) 45%, #7dd3fc));
  border-radius: 0 2px 2px 0;
  transition: width .1s linear;
}

/* ------------------------------------------------------------- Navbar */
#top-row {
  position: fixed;
  inset: 0 0 auto;
  z-index: 80;
  height: 4.5rem;
  pointer-events: none;
  transition: height .3s var(--ease-standard), transform .3s var(--ease-standard);
}

.navbar-shell {
  pointer-events: auto;
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 .5rem;
  transition: padding .3s var(--ease-standard);
}
@media (min-width: 768px) {
  .navbar-shell { padding: 0 1rem; }
}

#navbar {
  height: 4.5rem;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .25rem;
  padding: 0 .5rem;
  border-radius: 0;
  border: 1px solid transparent;
  transition: background-color .3s var(--ease-standard), box-shadow .3s var(--ease-standard),
    border-color .3s var(--ease-standard), border-radius .3s var(--ease-standard),
    height .3s var(--ease-standard), margin-top .3s var(--ease-standard),
    backdrop-filter .3s var(--ease-standard);
}

/* 滚动后玻璃拟态 */
#navbar.scrolled {
  height: 3.75rem;
  margin-top: .5rem;
  border-radius: var(--radius-large);
  background-color: var(--card-bg-transparent);
  border-color: var(--line-divider);
  -webkit-backdrop-filter: blur(var(--navbar-blur)) saturate(180%);
  backdrop-filter: blur(var(--navbar-blur)) saturate(180%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, .08);
}
:root.dark #navbar.scrolled { box-shadow: 0 4px 24px rgba(0, 0, 0, .45); }

.navbar-brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  height: 3.25rem;
  padding: 0 .85rem;
  border-radius: .75rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--deep-text);
  transition: background-color .15s var(--ease-standard), transform .15s var(--ease-standard);
}
.navbar-brand:hover { background: var(--btn-plain-bg-hover); }
.navbar-brand:active { transform: scale(.95); }
.navbar-brand svg { width: 1.15rem; height: 1.15rem; color: var(--primary); }
.navbar-brand span { white-space: nowrap; }
@media (max-width: 380px) {
  .navbar-brand span { max-width: 7rem; overflow: hidden; text-overflow: ellipsis; }
}

.nav-links {
  display: none;
  align-items: center;
  justify-content: center;
  gap: .125rem;
}
@media (min-width: 1024px) {
  .nav-links { display: flex; }
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: .4rem;
  height: 2.5rem;
  padding: 0 1rem;
  border-radius: .75rem;
  font-weight: 700;
  font-size: .95rem;
  color: var(--text-90);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard),
    transform .15s var(--ease-standard);
}
.nav-link svg { width: 1.05rem; height: 1.05rem; opacity: .9; }
.nav-link:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.nav-link:active { transform: scale(.95); }
.nav-link.active { background: var(--btn-regular-bg); color: var(--btn-content); }
.nav-link .caret {
  width: .8rem;
  height: .8rem;
  margin-left: .1rem;
  transition: transform .2s var(--ease-standard);
}

/* 下拉菜单 */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 60;
  padding-top: .5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity .18s var(--ease-standard), transform .18s var(--ease-standard), visibility .18s;
}
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}
.nav-item:hover .caret,
.nav-item:focus-within .caret { transform: rotate(180deg); }

.dropdown-content {
  min-width: 11rem;
  padding: .5rem;
  border-radius: .9rem;
  background: var(--float-panel-bg);
  border: 1px solid var(--line-divider);
  box-shadow: var(--panel-shadow);
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  width: 100%;
  height: 2.4rem;
  padding: 0 .75rem;
  border-radius: .6rem;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-90);
  white-space: nowrap;
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.dropdown-item svg { width: 1.05rem; height: 1.05rem; opacity: .7; }
.dropdown-item:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }

/* 未滚动时：导航浮在横幅上，文字转为白色 */
#navbar:not(.scrolled) .navbar-brand,
#navbar:not(.scrolled) .nav-link { color: #fff; }
#navbar:not(.scrolled) .navbar-brand svg { color: #fff; opacity: .92; }
#navbar:not(.scrolled) .nav-link:hover { background: rgba(255, 255, 255, .18); color: #fff; }
#navbar:not(.scrolled) .nav-link.active { background: rgba(255, 255, 255, .2); color: #fff; }
#navbar:not(.scrolled) .icon-btn { color: rgba(255, 255, 255, .92); }
#navbar:not(.scrolled) .icon-btn:hover { background: rgba(255, 255, 255, .16); color: #fff; }
#navbar:not(.scrolled) .search-trigger {
  background: rgba(255, 255, 255, .16);
  color: rgba(255, 255, 255, .85);
  border: 1px solid rgba(255, 255, 255, .18);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
#navbar:not(.scrolled) .search-trigger:hover {
  background: rgba(255, 255, 255, .26);
  color: #fff;
}
#navbar:not(.scrolled) .search-trigger kbd {
  border-color: rgba(255, 255, 255, .35);
  color: rgba(255, 255, 255, .8);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: .35rem;
  justify-self: end;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: .75rem;
  color: var(--text-75);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard),
    transform .15s var(--ease-standard);
}
.icon-btn svg { width: 1.25rem; height: 1.25rem; }
.icon-btn:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.icon-btn:active { transform: scale(.9); }

.search-trigger {
  display: none;
  align-items: center;
  gap: .5rem;
  height: 2.75rem;
  padding: 0 .85rem;
  min-width: 11rem;
  border-radius: .75rem;
  background: color-mix(in srgb, var(--deep-text) 4%, transparent);
  color: var(--text-50);
  font-size: .9rem;
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.search-trigger:hover {
  background: color-mix(in srgb, var(--deep-text) 7%, transparent);
  color: var(--text-75);
}
.search-trigger svg { width: 1.1rem; height: 1.1rem; }
.search-trigger kbd {
  margin-left: auto;
  font-family: var(--font-code);
  font-size: .7rem;
  padding: .15rem .35rem;
  border-radius: .35rem;
  border: 1px solid var(--line-divider);
  color: var(--text-50);
}
@media (min-width: 1024px) {
  .search-trigger { display: flex; }
  #menu-toggle, #search-icon-btn { display: none; }
}

/* ------------------------------------------------------------- Banner */
body:not(.is-home) { --banner-height: var(--banner-height-non-home); }

#banner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--banner-height);
  overflow: hidden;
  z-index: 0;
}

#banner .banner-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}

#banner .banner-dim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .28);
}

#banner .banner-gradient {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 30%;
  background: linear-gradient(to bottom, transparent, var(--page-bg));
  pointer-events: none;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.25rem;
}

.banner-text {
  width: 88%;
  max-width: 60rem;
  text-align: center;
  transform: translateY(1.25rem);
}

.banner-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1.15;
  color: #fff;
  letter-spacing: .01em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .28);
  margin-bottom: .75rem;
}
@media (min-width: 768px) {
  .banner-title { font-size: 3.5rem; }
}
@media (min-width: 1280px) {
  .banner-title { font-size: 4.5rem; margin-bottom: 1rem; }
}

.banner-subtitle {
  font-size: 1rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, .9);
  min-height: 1.6em;
  text-shadow: 0 1px 12px rgba(0, 0, 0, .25);
}
@media (min-width: 768px) {
  .banner-subtitle { font-size: 1.5rem; }
}

.typewriter-caret {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 2px;
  vertical-align: -.12em;
  background: rgba(255, 255, 255, .9);
  animation: blink 1s step-end infinite;
}

.banner-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  margin-top: 1.35rem;
}
.banner-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: .7rem;
  color: #fff;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .18);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: background-color .2s var(--ease-standard), transform .2s var(--ease-standard);
}
.banner-link svg { width: 1.15rem; height: 1.15rem; }
.banner-link:hover { background: rgba(255, 255, 255, .28); transform: translateY(-2px); }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 5.5rem;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, .8);
  animation: bounce-arrow 2s ease-in-out infinite;
  display: none;
}
@media (min-width: 768px) { .scroll-hint { display: block; } }
.scroll-hint svg { width: 1.6rem; height: 1.6rem; }

/* 非首页 banner：页面标题 */
.banner-page-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 2rem;
  color: #fff;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .3);
}
@media (min-width: 768px) { .banner-page-title { font-size: 2.75rem; } }

.banner-page-desc {
  margin-top: .6rem;
  color: rgba(255, 255, 255, .88);
  font-size: .95rem;
}
@media (min-width: 768px) { .banner-page-desc { font-size: 1.05rem; } }

.banner-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .5rem 1.1rem;
  margin-top: 1rem;
  color: rgba(255, 255, 255, .9);
  font-size: .85rem;
}
.banner-post-meta span { display: inline-flex; align-items: center; gap: .35rem; }
.banner-post-meta svg { width: 1rem; height: 1rem; opacity: .85; }

/* --------------------------------------------------------- Content panel */
#content-panel {
  position: relative;
  z-index: 10;
  padding-top: calc(var(--banner-height) - 3.5rem);
}

#content-panel-inner {
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
}
@media (min-width: 1280px) {
  #content-panel-inner { width: 92vw; }
}

#main-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 0 .5rem;
  align-items: start;
}
@media (min-width: 768px) {
  #main-grid {
    grid-template-columns: var(--grid-sidebar-width) minmax(0, 1fr);
    padding: 0 1rem;
  }
}
@media (min-width: 1280px) {
  #main-grid {
    grid-template-columns: var(--grid-sidebar-width) minmax(0, 1fr) var(--grid-sidebar-width);
  }
}

/* 移动端隐藏侧栏 */
#left-sidebar-wrapper,
#right-sidebar-wrapper { display: none; }
@media (min-width: 768px) {
  #left-sidebar-wrapper { display: block; }
}
@media (min-width: 1280px) {
  #right-sidebar-wrapper { display: block; }
}

#left-sidebar,
#right-sidebar {
  position: sticky;
  top: 5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 1rem;
  scrollbar-width: thin;
}
#right-sidebar { top: 5rem; }

/* 滚动条淡出（悬停显现） */
#left-sidebar::-webkit-scrollbar-thumb { background: transparent; }
#left-sidebar:hover::-webkit-scrollbar-thumb { background: var(--scrollbar-bg); }

/* ------------------------------------------------------------- Cards */
.card-base {
  border-radius: var(--radius-large);
  background-color: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: background-color .2s var(--ease-standard), box-shadow .2s var(--ease-standard);
}

.card-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 700;
  font-size: .95rem;
  color: var(--text-90);
  margin-bottom: .9rem;
}
.card-header svg { width: 1.05rem; height: 1.05rem; color: var(--primary); }

/* 个人卡片 */
.profile-card { padding: .9rem; }
.profile-avatar-wrap {
  position: relative;
  display: block;
  margin: .25rem auto .8rem;
  width: 7.5rem;
  border-radius: .9rem;
  overflow: hidden;
  transition: transform .15s var(--ease-standard);
}
@media (min-width: 1024px) {
  .profile-avatar-wrap { width: 100%; margin: 0 0 .8rem; }
}
.profile-avatar-wrap img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.profile-avatar-wrap .avatar-mask {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  color: #fff;
  transition: background-color .2s var(--ease-standard);
}
.profile-avatar-wrap .avatar-mask svg {
  width: 2.4rem;
  height: 2.4rem;
  opacity: 0;
  transform: scale(.85);
  transition: opacity .2s var(--ease-standard), transform .2s var(--ease-standard);
}
.profile-avatar-wrap:hover .avatar-mask { background: rgba(0, 0, 0, .32); }
.profile-avatar-wrap:hover .avatar-mask svg { opacity: 1; transform: scale(1); }
.profile-avatar-wrap:active { transform: scale(.96); }

.profile-name {
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
  color: var(--deep-text);
  font-family: var(--font-title);
}
.profile-bio {
  margin-top: .35rem;
  text-align: center;
  font-size: .8rem;
  line-height: 1.55;
  color: var(--text-50);
}

.profile-socials {
  display: flex;
  justify-content: center;
  gap: .3rem;
  margin-top: .75rem;
}
.profile-socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: .55rem;
  color: var(--text-50);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard),
    transform .15s var(--ease-standard);
}
.profile-socials a svg { width: 1.05rem; height: 1.05rem; }
.profile-socials a:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.profile-socials a:active { transform: scale(.9); }

.profile-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: .85rem;
  padding-top: .85rem;
  border-top: 1px dashed var(--line-divider);
}
.profile-stats div { text-align: center; }
.profile-stats .num {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--deep-text);
  font-variant-numeric: tabular-nums;
}
.profile-stats .label {
  display: block;
  font-size: .68rem;
  color: var(--text-50);
  margin-top: .1rem;
}

/* 公告 */
.announce-card { padding: .9rem; }
.announce-card .card-header { margin-bottom: .5rem; }
.announce-body {
  font-size: .8rem;
  line-height: 1.7;
  color: var(--text-75);
}
.announce-body a { color: var(--primary); font-weight: 600; }
.announce-body a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* 日历 */
.calendar-card { padding: .9rem; }
.calendar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .6rem;
}
.calendar-month {
  font-size: .82rem;
  font-weight: 700;
  color: var(--text-90);
}
.calendar-nav { display: flex; gap: .15rem; }
.calendar-nav button {
  width: 1.5rem;
  height: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: .4rem;
  color: var(--text-50);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.calendar-nav button:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.calendar-nav svg { width: .9rem; height: .9rem; }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: .15rem;
  text-align: center;
}
.calendar-grid .dow {
  font-size: .62rem;
  color: var(--text-30);
  padding: .15rem 0;
  font-weight: 600;
}
.calendar-grid .day {
  font-size: .7rem;
  line-height: 1.9;
  border-radius: .45rem;
  color: var(--text-75);
  font-variant-numeric: tabular-nums;
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.calendar-grid .day.is-empty { color: transparent; }
.calendar-grid .day:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.calendar-grid .day.today {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}
.calendar-grid .day.has-post { position: relative; }
.calendar-grid .day.has-post::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: .12rem;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--primary);
  transform: translateX(-50%);
}
.calendar-grid .day.today.has-post::after { background: #fff; }

/* 分类卡 */
.taxonomy-card { padding: .9rem; }
.taxonomy-list { display: flex; flex-direction: column; gap: .1rem; }
.taxonomy-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .4rem .55rem;
  border-radius: .55rem;
  font-size: .82rem;
  color: var(--text-75);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.taxonomy-item:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.taxonomy-item .count {
  font-size: .7rem;
  color: var(--btn-content);
  background: var(--btn-regular-bg);
  border-radius: 9999px;
  padding: .05rem .45rem;
  font-variant-numeric: tabular-nums;
}

.tag-cloud { display: flex; flex-wrap: wrap; gap: .35rem; }
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .28rem .6rem;
  border-radius: 9999px;
  font-size: .74rem;
  font-weight: 500;
  color: var(--btn-content);
  background: color-mix(in srgb, var(--btn-content) 8%, transparent);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard),
    transform .15s var(--ease-standard);
}
.tag-chip .n { opacity: .6; font-size: .66rem; }
.tag-chip:hover {
  background: color-mix(in srgb, var(--btn-content) 18%, transparent);
  color: var(--primary);
}
.tag-chip:active { transform: scale(.95); }

/* ------------------------------------------------- 分类胶囊筛选条 */
.category-bar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .55rem;
  margin-bottom: 1rem;
  overflow: hidden;
}
.category-scroll {
  display: flex;
  align-items: center;
  gap: .4rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.category-scroll::-webkit-scrollbar { display: none; }
.category-pill {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .38rem .85rem;
  border-radius: 9999px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-75);
  white-space: nowrap;
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.category-pill:hover { background: var(--btn-plain-bg-hover); color: var(--primary); }
.category-pill.active { background: var(--primary); color: #fff; }
.pill-count { font-size: .68rem; opacity: .7; font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------- Post list */
#post-list-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column-reverse;
  overflow: hidden;
  border-radius: var(--radius-large);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: box-shadow .25s var(--ease-standard), transform .25s var(--ease-standard),
    background-color .25s var(--ease-standard);
}
.post-card:hover { box-shadow: 0 10px 34px rgba(0, 0, 0, .1); }
:root.dark .post-card:hover { box-shadow: 0 10px 34px rgba(0, 0, 0, .5); }

.post-card-content {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 1rem 1rem 1rem;
}
@media (min-width: 768px) {
  .post-card-content {
    width: calc(100% - 30% - 1.5rem);
    padding: 1.75rem 0.5rem 1.75rem 2.25rem;
  }
}

.post-card-title {
  position: relative;
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-90);
  margin-bottom: .75rem;
  transition: color .2s var(--ease-standard);
}
@media (min-width: 768px) {
  .post-card-title { font-size: 1.75rem; }
}
.post-card-title::before {
  content: "";
  position: absolute;
  left: -1.15rem;
  top: .42em;
  width: .25rem;
  height: 1.25rem;
  border-radius: .25rem;
  background: var(--primary);
  opacity: 0;
  transform: scaleY(.4);
  transition: opacity .2s var(--ease-standard), transform .2s var(--ease-standard);
}
@media (min-width: 768px) {
  .post-card-title::before { opacity: 1; transform: none; }
}
.post-card:hover .post-card-title { color: var(--primary); }

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1rem;
  margin-bottom: .75rem;
  color: var(--text-50);
  font-size: .8rem;
}
.post-meta > div,
.post-meta > a { display: flex; align-items: center; gap: .3rem; }
.post-meta svg { width: .95rem; height: .95rem; opacity: .75; }
.post-meta a { transition: color .15s var(--ease-standard); }
.post-meta a:hover { color: var(--primary); }

.pinned-badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  padding: .25rem .5rem;
  border-radius: .4rem;
  background: var(--btn-regular-bg);
  color: var(--btn-content);
  font-weight: 700;
  font-size: .72rem;
}
.pinned-badge svg { width: .8rem; height: .8rem; }

.post-description {
  color: var(--text-75);
  font-size: .9rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  padding-right: .25rem;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .375rem;
  margin-top: auto;
  padding-top: .85rem;
}
.tag-item {
  display: inline-flex;
  align-items: center;
  padding: .25rem .65rem;
  border-radius: 9999px;
  font-size: .72rem;
  font-weight: 500;
  color: var(--btn-content);
  background: color-mix(in srgb, var(--btn-content) 8%, transparent);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.tag-item:hover {
  background: color-mix(in srgb, var(--btn-content) 18%, transparent);
  color: var(--primary);
}

.post-card-image {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border-radius: var(--radius-large);
}
@media (min-width: 768px) {
  .post-card-image {
    position: absolute;
    top: 1rem;
    bottom: 1rem;
    right: 1rem;
    width: 30%;
    height: auto;
    aspect-ratio: auto;
    border-radius: .75rem;
  }
}
.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s var(--ease-standard);
}
.post-card:hover .post-card-image img { transform: scale(1.08); }
.post-card-image .img-mask {
  position: absolute;
  inset: 0;
  z-index: 10;
  background: rgba(0, 0, 0, 0);
  transition: background-color .25s var(--ease-standard);
}
.post-card:hover .post-card-image .img-mask { background: rgba(0, 0, 0, .28); }
.post-card-image .img-arrow {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.post-card-image .img-arrow svg {
  width: 2.25rem;
  height: 2.25rem;
  opacity: 0;
  transform: scale(.8) translateX(-6px);
  transition: opacity .25s var(--ease-standard), transform .25s var(--ease-standard);
}
.post-card:hover .post-card-image .img-arrow svg { opacity: 1; transform: none; }

/* 归档 / 列表页行式 */
.archive-card { padding: 1.1rem 1.25rem; }
.archive-group { margin-bottom: 1.75rem; }
.archive-group:last-child { margin-bottom: 0; }
.archive-year {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-90);
  margin-bottom: .75rem;
}
.archive-year::after {
  content: "";
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-divider) 0 6px, transparent 6px 12px);
}
.archive-row {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: .55rem .5rem;
  border-radius: .6rem;
  transition: background-color .15s var(--ease-standard);
}
.archive-row:hover { background: var(--btn-card-bg-hover); }
.archive-row .date {
  flex-shrink: 0;
  font-family: var(--font-code);
  font-size: .75rem;
  color: var(--text-50);
  font-variant-numeric: tabular-nums;
}
.archive-row .title {
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-90);
  transition: color .15s var(--ease-standard);
}
.archive-row:hover .title { color: var(--primary); }
.archive-row .cat {
  margin-left: auto;
  flex-shrink: 0;
  font-size: .7rem;
  color: var(--btn-content);
  background: var(--btn-regular-bg);
  padding: .1rem .5rem;
  border-radius: 9999px;
}
@media (max-width: 640px) {
  .archive-row { flex-wrap: wrap; gap: .25rem .5rem; }
  .archive-row .cat { margin-left: 0; }
}

/* 页面标题区（非文章页） */
.page-card { padding: 1.5rem 1.5rem 1.75rem; }
.page-heading {
  font-family: var(--font-title);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--deep-text);
  margin-bottom: .35rem;
}
.page-sub { font-size: .85rem; color: var(--text-50); }

.count {
  font-size: .7rem;
  color: var(--btn-content);
  background: var(--btn-regular-bg);
  border-radius: 9999px;
  padding: .08rem .5rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* 分类 / 标签大卡 */
.taxonomy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: .75rem;
  margin-top: 1.25rem;
}
.taxonomy-tile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .95rem 1.1rem;
  border-radius: .85rem;
  background: var(--btn-card-bg-hover);
  border: 1px solid var(--line-divider);
  transition: transform .2s var(--ease-standard), background-color .2s var(--ease-standard),
    border-color .2s var(--ease-standard);
}
.taxonomy-tile:hover {
  transform: translateY(-2px);
  background: var(--btn-plain-bg-hover);
  border-color: color-mix(in srgb, var(--primary) 40%, transparent);
}
.taxonomy-tile .name { font-weight: 600; font-size: .95rem; color: var(--text-90); }
.taxonomy-tile .n {
  font-size: .75rem;
  color: var(--btn-content);
  background: var(--btn-regular-bg);
  border-radius: 9999px;
  padding: .1rem .55rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: 1rem;
}
.filter-bar .tag-chip { cursor: pointer; }
.filter-bar .tag-chip.active {
  background: var(--primary);
  color: #fff;
}

/* 关于页 */
.about-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}
@media (min-width: 640px) {
  .about-hero { flex-direction: row; text-align: left; gap: 1.5rem; }
}
.about-hero img {
  width: 6.5rem;
  height: 6.5rem;
  border-radius: 1.1rem;
  object-fit: cover;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .12);
}
.about-hero h1 {
  font-family: var(--font-title);
  font-size: 1.65rem;
  color: var(--deep-text);
}
.about-hero .role { color: var(--primary); font-weight: 600; font-size: .9rem; margin-top: .2rem; }
.about-hero .location { color: var(--text-50); font-size: .82rem; margin-top: .15rem; }

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.1rem;
}
.btn-regular {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  height: 2.35rem;
  padding: 0 .9rem;
  border-radius: .65rem;
  background: var(--btn-regular-bg);
  color: var(--btn-content);
  font-weight: 600;
  font-size: .82rem;
  transition: background-color .15s var(--ease-standard), transform .15s var(--ease-standard);
}
.btn-regular svg { width: 1rem; height: 1rem; }
.btn-regular:hover { background: var(--btn-regular-bg-hover); }
.btn-regular:active { transform: scale(.95); }

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: .65rem;
  margin-top: 1rem;
}
.skill-item {
  padding: .8rem .9rem;
  border-radius: .7rem;
  background: var(--btn-card-bg-hover);
  border: 1px solid var(--line-divider);
}
.skill-item .k { font-weight: 600; font-size: .85rem; color: var(--text-90); }
.skill-item .v { font-size: .75rem; color: var(--text-50); margin-top: .15rem; }

.timeline { position: relative; margin-top: 1rem; padding-left: 1.35rem; }
.timeline::before {
  content: "";
  position: absolute;
  left: .35rem;
  top: .4rem;
  bottom: .4rem;
  width: 2px;
  background: linear-gradient(var(--primary), transparent);
  opacity: .35;
}
.timeline-item { position: relative; padding-bottom: 1.1rem; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.25rem;
  top: .45rem;
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}
.timeline-item .when { font-family: var(--font-code); font-size: .72rem; color: var(--text-50); }
.timeline-item .what { font-weight: 600; font-size: .9rem; color: var(--text-90); margin-top: .1rem; }
.timeline-item .desc { font-size: .82rem; color: var(--text-75); margin-top: .15rem; }

/* --------------------------------------------------------- Article page */
#article-card { padding: 1.35rem 1.15rem 1.75rem; }
@media (min-width: 768px) { #article-card { padding: 2.25rem 2.5rem 2.75rem; } }

.article-head { margin-bottom: 1.5rem; }
.article-title {
  font-family: var(--font-title);
  font-size: 1.7rem;
  line-height: 1.3;
  color: var(--deep-text);
  margin-bottom: .75rem;
}
@media (min-width: 768px) { .article-title { font-size: 2.1rem; } }

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1.1rem;
  color: var(--text-50);
  font-size: .8rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px dashed var(--line-divider);
}
.article-meta span { display: inline-flex; align-items: center; gap: .3rem; }
.article-meta svg { width: .95rem; height: .95rem; opacity: .75; }
.article-meta a:hover { color: var(--primary); }

.article-cover {
  width: 100%;
  border-radius: .9rem;
  overflow: hidden;
  margin-bottom: 1.5rem;
  aspect-ratio: 16 / 8;
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }


/* 文章头部：字数与阅读时长 */
.article-stats {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-bottom: .7rem;
  font-size: .78rem;
  color: var(--text-30);
}
.article-stats .stat { display: inline-flex; align-items: center; gap: .35rem; }
.article-stats svg { width: .95rem; height: .95rem; opacity: .7; }
.article-meta-tags { display: inline-flex; flex-wrap: wrap; gap: .45rem; }
.article-meta-tags a { color: var(--text-50); font-size: .78rem; }
.article-meta-tags a:hover { color: var(--primary); }

/* 正文排版 */
.prose { font-size: .95rem; line-height: 1.85; color: var(--text-90); }
@media (min-width: 768px) { .prose { font-size: 1rem; } }

.prose > * + * { margin-top: 1em; }
.prose h2 {
  position: relative;
  margin-top: 2.2em;
  margin-bottom: .7em;
  padding-left: .8rem;
  font-size: 1.35rem;
  color: var(--deep-text);
  scroll-margin-top: 6rem;
}
.prose h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: .18em;
  bottom: .18em;
  width: .28rem;
  border-radius: .2rem;
  background: var(--primary);
}
.prose h3 {
  margin-top: 1.8em;
  margin-bottom: .6em;
  font-size: 1.12rem;
  color: var(--deep-text);
  scroll-margin-top: 6rem;
}
.prose h4 { margin-top: 1.5em; margin-bottom: .5em; font-size: 1rem; color: var(--deep-text); }

.prose a {
  color: var(--primary);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: var(--link-underline);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: background-color .15s var(--ease-standard), text-decoration-color .15s var(--ease-standard);
}
.prose a:hover { background: var(--link-hover); text-decoration-color: var(--primary); }

.prose strong { font-weight: 700; color: var(--deep-text); }
.prose em { font-style: italic; }

.prose ul, .prose ol { padding-left: 1.35rem; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-top: .35em; }
.prose li::marker { color: var(--primary); }
.prose ul ul, .prose ol ol, .prose ul ol, .prose ol ul { margin-top: .35em; }

.prose blockquote {
  margin: 1.4em 0;
  padding: .85rem 1.1rem;
  border-left: .25rem solid var(--primary);
  border-radius: 0 .6rem .6rem 0;
  background: var(--btn-card-bg-hover);
  color: var(--text-75);
  font-size: .93rem;
}
.prose blockquote p + p { margin-top: .6em; }

.prose :not(pre) > code {
  font-family: var(--font-code);
  font-size: .86em;
  padding: .15em .4em;
  border-radius: .35rem;
  background: var(--inline-code-bg);
  color: var(--inline-code-color);
  word-break: break-word;
}

.prose hr {
  margin: 2em 0;
  border: none;
  border-top: 1px dashed var(--line-color);
}

.prose img { border-radius: .7rem; margin: 1.2em auto; }

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: .86rem;
  overflow: hidden;
  border-radius: .6rem;
  display: block;
  overflow-x: auto;
}
.prose th, .prose td {
  padding: .55rem .8rem;
  border-bottom: 1px solid var(--line-divider);
  text-align: left;
}
.prose th { background: var(--btn-regular-bg); color: var(--btn-content); font-weight: 600; }
.prose tr:hover td { background: var(--btn-card-bg-hover); }

/* 代码块 */
.code-block {
  position: relative;
  margin: 1.4em 0;
  border-radius: .75rem;
  overflow: hidden;
  background: var(--codeblock-bg);
  box-shadow: 0 4px 18px rgba(0, 0, 0, .12);
}
.code-topbar {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .55rem .85rem;
  background: var(--codeblock-topbar-bg);
}
.code-topbar .dot { width: .6rem; height: .6rem; border-radius: 50%; }
.code-topbar .dot:nth-child(1) { background: #ff5f57; }
.code-topbar .dot:nth-child(2) { background: #febc2e; }
.code-topbar .dot:nth-child(3) { background: #28c840; }
.code-topbar .lang {
  margin-left: .5rem;
  font-family: var(--font-code);
  font-size: .7rem;
  color: rgba(255, 255, 255, .55);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.code-copy {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2rem .5rem;
  border-radius: .35rem;
  font-size: .7rem;
  color: rgba(255, 255, 255, .6);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.code-copy svg { width: .85rem; height: .85rem; }
.code-copy:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.code-copy.copied { color: #4ade80; }

.code-block pre {
  margin: 0;
  padding: .9rem 1rem 1.1rem;
  overflow-x: auto;
  font-family: var(--font-code);
  font-size: .82rem;
  line-height: 1.7;
  color: #d4d7e5;
  tab-size: 2;
}
.code-block pre code { font-family: inherit; }

/* 极简语法着色 */
.tok-key { color: #c792ea; }
.tok-str { color: #c3e88d; }
.tok-com { color: #6b7394; font-style: italic; }
.tok-num { color: #f78c6c; }
.tok-fn { color: #82aaff; }
.tok-var { color: #ffcb6b; }
.tok-tag { color: #f07178; }
.tok-attr { color: #ffcb6b; }
.tok-punc { color: #89ddff; }

/* 许可信息 */
.license-block {
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  border-radius: .7rem;
  background: var(--license-block-bg);
  border: 1px solid var(--line-divider);
  font-size: .8rem;
  color: var(--text-50);
  line-height: 1.8;
}
.license-block strong { color: var(--text-75); }
.license-block a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }

/* 上/下一篇 */
.post-nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  margin-top: 1rem;
}
@media (min-width: 640px) { .post-nav { grid-template-columns: 1fr 1fr; } }
.post-nav a {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: .95rem 1.1rem;
  border-radius: .85rem;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: transform .2s var(--ease-standard), box-shadow .2s var(--ease-standard);
}
.post-nav a:hover { transform: translateY(-2px); box-shadow: 0 8px 26px rgba(0, 0, 0, .1); }
.post-nav .dir { font-size: .7rem; color: var(--text-50); display: flex; align-items: center; gap: .3rem; }
.post-nav .dir svg { width: .85rem; height: .85rem; }
.post-nav .t { font-weight: 600; font-size: .88rem; color: var(--text-90); }
.post-nav a:hover .t { color: var(--primary); }
.post-nav .next { align-items: flex-end; text-align: right; }

/* 目录 */
.toc-card { padding: .9rem; }
.toc-card .card-header { margin-bottom: .5rem; }
.toc-list { position: relative; font-size: .8rem; }
.toc-list a {
  display: block;
  padding: .3rem .5rem .3rem .85rem;
  border-left: 2px solid var(--toc-indicator-bg);
  color: var(--text-50);
  line-height: 1.5;
  transition: color .15s var(--ease-standard), border-color .15s var(--ease-standard),
    background-color .15s var(--ease-standard);
}
.toc-list a.lvl-3 { padding-left: 1.6rem; font-size: .76rem; }
.toc-list a:hover { color: var(--text-90); background: var(--toc-btn-hover); }
.toc-list a.active {
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
  background: var(--toc-btn-hover);
}

/* --------------------------------------------------------- Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  margin: 1.25rem 0 .5rem;
}
.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  height: 2.4rem;
  padding: 0 .7rem;
  border-radius: .7rem;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  color: var(--text-75);
  font-size: .85rem;
  font-weight: 600;
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard),
    transform .15s var(--ease-standard);
}
.page-btn svg { width: 1rem; height: 1rem; }
.page-btn:hover:not(.disabled):not(.active) { color: var(--primary); transform: translateY(-1px); }
.page-btn.active { background: var(--primary); color: #fff; }
.page-btn.disabled { opacity: .45; pointer-events: none; }

/* ------------------------------------------------------------- Footer */
.site-footer {
  padding: .5rem 0 1.5rem;
  margin-top: 2.5rem;
}
.footer-divider {
  height: 0;
  margin: 0 auto 1.1rem;
  width: calc(100% - 6rem);
  max-width: 60rem;
  border-top: 1px dashed var(--line-color);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .45rem;
  padding: 0 1.25rem;
  text-align: center;
  font-size: .8rem;
  color: var(--text-50);
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .1rem .45rem;
}
.footer-row a {
  color: var(--primary);
  font-weight: 500;
  transition: opacity .15s var(--ease-standard);
}
.footer-row a:hover { opacity: .75; }
.footer-row .sep { opacity: .35; }
.footer-note { font-size: .74rem; color: var(--text-30); }

/* ------------------------------------------------- Floating controls */
.floating-controls {
  position: fixed;
  right: 1rem;
  bottom: 1.25rem;
  z-index: 70;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  align-items: flex-end;
}
@media (min-width: 1280px) {
  .floating-controls { right: 1.75rem; bottom: 1.75rem; }
}

.float-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: .85rem;
  background: var(--card-bg);
  color: var(--text-75);
  box-shadow: 0 4px 18px rgba(0, 0, 0, .12);
  border: 1px solid var(--line-divider);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(.94);
  transition: opacity .25s var(--ease-standard), transform .25s var(--ease-standard),
    visibility .25s, color .15s var(--ease-standard), background-color .15s var(--ease-standard);
}
.float-btn svg { width: 1.15rem; height: 1.15rem; }
.float-btn.is-shown { opacity: 1; visibility: visible; transform: none; }
.float-btn:hover { color: var(--primary); background: var(--btn-card-bg-hover); }
.float-btn:active { transform: scale(.92); }

/* ------------------------------------------------------- Mobile drawer */
#drawer-scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(0, 0, 0, .5);
  opacity: 0;
  pointer-events: none;
  transition: opacity .28s var(--ease-standard);
}
#drawer-scrim.open { opacity: 1; pointer-events: auto; }

#drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 91;
  width: min(74vw, 20rem);
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: var(--radius-large) 0 0 var(--radius-large);
  box-shadow: -12px 0 40px rgba(0, 0, 0, .28);
  transform: translateX(100%);
  transition: transform .3s var(--ease-decelerate);
  overflow: hidden;
}
#drawer.open { transform: none; }

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1rem;
  border-bottom: 1px solid var(--line-divider);
  font-weight: 700;
  color: var(--text-90);
}
.drawer-body { flex: 1; overflow-y: auto; padding: .7rem; }
.drawer-link {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .7rem .75rem;
  border-radius: .7rem;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-90);
  transition: background-color .15s var(--ease-standard), color .15s var(--ease-standard);
}
.drawer-link svg { width: 1.1rem; height: 1.1rem; opacity: .8; }
.drawer-link:hover, .drawer-link.active { background: var(--btn-plain-bg-hover); color: var(--primary); }
.drawer-sub { padding-left: 1.9rem; }
.drawer-sub .drawer-link { font-size: .84rem; font-weight: 500; padding: .55rem .7rem; }
.drawer-foot {
  padding: .85rem 1rem;
  border-top: 1px solid var(--line-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .75rem;
  color: var(--text-50);
}

/* --------------------------------------------------------- Search panel */
#search-modal {
  position: fixed;
  inset: 0;
  z-index: 95;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 5.5rem 1rem 2rem;
  background: rgba(0, 0, 0, .35);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s var(--ease-standard), visibility .2s;
}
#search-modal.open { opacity: 1; visibility: visible; }

.search-panel {
  width: 100%;
  max-width: 34rem;
  max-height: calc(100vh - 9rem);
  display: flex;
  flex-direction: column;
  border-radius: 1rem;
  background: var(--float-panel-bg);
  box-shadow: var(--panel-shadow);
  border: 1px solid var(--line-divider);
  overflow: hidden;
  transform: translateY(-12px) scale(.98);
  transition: transform .22s var(--ease-decelerate);
}
#search-modal.open .search-panel { transform: none; }

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--line-divider);
}
.search-input-wrap svg { width: 1.1rem; height: 1.1rem; color: var(--text-50); flex-shrink: 0; }
#search-input {
  flex: 1;
  border: none;
  outline: none;
  background: none;
  color: var(--text-90);
  font-size: .95rem;
}
#search-input::placeholder { color: var(--text-30); }
.search-close {
  font-family: var(--font-code);
  font-size: .68rem;
  color: var(--text-50);
  border: 1px solid var(--line-divider);
  border-radius: .35rem;
  padding: .15rem .35rem;
}

.search-results { overflow-y: auto; padding: .4rem; }
.search-result {
  display: block;
  padding: .6rem .7rem;
  border-radius: .6rem;
  transition: background-color .12s var(--ease-standard);
}
.search-result:hover, .search-result.focused { background: var(--btn-plain-bg-hover); }
.search-result .r-title {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-90);
}
.search-result .r-title mark { background: color-mix(in srgb, var(--primary) 28%, transparent); color: inherit; border-radius: .2rem; }
.search-result .r-desc {
  font-size: .75rem;
  color: var(--text-50);
  margin-top: .1rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.search-empty {
  padding: 1.6rem 1rem;
  text-align: center;
  font-size: .82rem;
  color: var(--text-50);
}
.search-hint {
  padding: .5rem .8rem .65rem;
  font-size: .7rem;
  color: var(--text-30);
  border-top: 1px solid var(--line-divider);
  display: flex;
  gap: .75rem;
}

/* --------------------------------------------------------- Page transition */
#page-fade {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--page-bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .28s var(--ease-standard);
}
#page-fade.active { opacity: 1; pointer-events: auto; }

/* --------------------------------------------------------- Back to top */
.to-top-wrap { display: contents; }

/* ------------------------------------------------- 移动端目录面板 */
.toc-fab { display: inline-flex; }
@media (min-width: 1280px) { .toc-fab { display: none; } }

#toc-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 92;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: 1.1rem 1.1rem 0 0;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, .28);
  transform: translateY(101%);
  transition: transform .3s var(--ease-decelerate);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
#toc-sheet.open { transform: none; }
.toc-sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.1rem .6rem;
  font-weight: 700;
  font-size: .9rem;
  border-bottom: 1px solid var(--line-divider);
}
.toc-sheet-body { overflow-y: auto; padding: .5rem .8rem 1.2rem; }
#toc-sheet-scrim {
  position: fixed;
  inset: 0;
  z-index: 91;
  background: rgba(0, 0, 0, .45);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease-standard);
}
#toc-sheet-scrim.open { opacity: 1; pointer-events: auto; }

/* --------------------------------------------------------- 锚点偏移 */
[id] { scroll-margin-top: 6rem; }

/* --------------------------------------------------------- 锚点偏移 */
[id] { scroll-margin-top: 6rem; }

/* --------------------------------------------------------- Utilities */
.mt-4 { margin-top: 1rem; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.empty-state {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-50);
  font-size: .9rem;
}

/* 移动端文章页：缩小标题、目录隐藏 */
@media (max-width: 767px) {
  .banner-title { font-size: 2.1rem; }
  .banner-page-title { font-size: 1.55rem; }
  .banner-page-desc { font-size: .82rem; margin-top: .4rem; }
  .banner-text { width: 92%; }
  body:not(.is-home) { --banner-height: max(38vh, 300px); }
  .banner-post-meta { font-size: .78rem; gap: .35rem .8rem; }
  #article-card { padding: 1.1rem .9rem 1.5rem; }
  .article-title { font-size: 1.45rem; }
  .prose h2 { font-size: 1.2rem; }
  .code-block pre { font-size: .76rem; }
  .footer-divider { width: calc(100% - 2rem); }
}

/* 平板：右栏隐藏后内容更宽 */
@media (min-width: 768px) and (max-width: 1279px) {
  #main-grid { gap: 1rem; }
}