/* ============================================================
   LAB · 秋裤博士研究所 — 全新设计系统 v2.0
   理念：深夜实验室 / 研究日志 / 技术极客
   特性：暗色为基 + 亮色模式、网格纸底纹、状态灯、终端元素、
         实验记录卡、代码块增强、全响应式
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  color-scheme: dark;

  /* 基底 */
  --bg: #0a0e14;
  --bg-soft: #0e1420;
  --panel: #111827;
  --panel-2: #16202f;
  --panel-3: #1b2739;

  /* 描边 */
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.3);

  /* 文字 */
  --text: #e8edf6;
  --text-2: #a3aec2;
  --text-3: #67748a;

  /* 强调 */
  --accent: #2ee6a8;   /* 研究信号绿 */
  --accent-soft: rgba(46, 230, 168, 0.12);
  --accent-2: #ffb454; /* 琥珀警示 */
  --accent-2-soft: rgba(255, 180, 84, 0.14);
  --danger: #ff5c6c;
  --link: #6ec7ff;

  /* 代码 */
  --code-bg: #0c111c;
  --code-text: #cdd6e4;

  /* 字体 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC",
    -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "SF Mono", Consolas, "Courier New", monospace;

  /* 尺寸 */
  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 20px;
  --container: 1180px;
  --header-h: 64px;

  /* 阴影 */
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.45);
  --glow: 0 0 0 1px var(--accent-soft), 0 0 24px rgba(46, 230, 168, 0.12);

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.28s;
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f3ee;
  --bg-soft: #efece4;
  --panel: #ffffff;
  --panel-2: #f6f3ea;
  --panel-3: #ece8dc;
  --border: rgba(24, 32, 48, 0.12);
  --border-strong: rgba(24, 32, 48, 0.26);
  --text: #1b2230;
  --text-2: #4c5769;
  --text-3: #8a94a6;
  --accent: #0e9f6e;
  --accent-soft: rgba(14, 159, 110, 0.1);
  --accent-2: #c4770e;
  --accent-2-soft: rgba(196, 119, 14, 0.12);
  --danger: #d64554;
  --link: #1a6fb5;
  --code-bg: #f2efe8;
  --code-text: #333c4d;
  --shadow-sm: 0 2px 10px rgba(30, 40, 60, 0.08);
  --shadow-md: 0 8px 30px rgba(30, 40, 60, 0.14);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(1200px 520px at 85% -10%, rgba(46, 230, 168, 0.06), transparent 60%),
    radial-gradient(900px 480px at -10% 0%, rgba(110, 199, 255, 0.05), transparent 55%),
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 34px 34px, 34px 34px;
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

a:hover {
  color: var(--accent);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::selection {
  background: var(--accent);
  color: #06120d;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 8px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-3);
}

/* ---------- Utilities ---------- */
.lab-container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 22px;
  padding-right: 22px;
}

.lab-monospace {
  font-family: var(--font-mono);
  font-size: 0.85em;
  letter-spacing: 0.04em;
}

.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;
}

/* 状态灯 */
.led {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: led-pulse 2.4s infinite;
  flex-shrink: 0;
}
.led--amber {
  background: var(--accent-2);
  box-shadow: 0 0 8px var(--accent-2);
  animation-delay: 0.8s;
}
.led--danger {
  background: var(--danger);
  box-shadow: 0 0 8px var(--danger);
  animation-delay: 1.6s;
}
@keyframes led-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* 标签 chip */
.lab-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 11px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-2);
  background: var(--panel-2);
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
}
.lab-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.lab-chip--accent {
  color: var(--accent);
  border-color: rgba(46, 230, 168, 0.45);
  background: var(--accent-soft);
}

/* 通用按钮 */
.lab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--panel-2);
  color: var(--text-2);
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  transition: all var(--dur) var(--ease);
  cursor: pointer;
}
.lab-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow);
  transform: translateY(-1px);
}
.lab-btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06120d;
  font-weight: 600;
}
.lab-btn--primary:hover {
  color: #06120d;
  filter: brightness(1.1);
}
.lab-btn--ghost {
  background: transparent;
}

/* 区块标题（终端式） */
.lab-sec {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.lab-sec__dots {
  display: flex;
  gap: 6px;
  padding: 6px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.lab-sec__dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-3);
}
.lab-sec__dots i:nth-child(1) { background: var(--danger); opacity: 0.85; }
.lab-sec__dots i:nth-child(2) { background: var(--accent-2); opacity: 0.85; }
.lab-sec__dots i:nth-child(3) { background: var(--accent); opacity: 0.85; }
.lab-sec__title {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--text);
  text-transform: uppercase;
}
.lab-sec__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-strong), transparent);
}
.lab-sec__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}

/* ============================================================
   顶部导航
   ============================================================ */
.lab-header {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.lab-header.is-scrolled {
  border-bottom-color: var(--border);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
}
.lab-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 20px;
}

.lab-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}
.lab-brand__logo {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--panel-3), var(--panel-2));
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.lab-brand__logo svg {
  width: 22px;
  height: 22px;
}
.lab-brand__logo .flask {
  fill: var(--accent);
  opacity: 0.9;
}
.lab-brand__logo .bubble {
  fill: var(--accent-2);
}
.lab-brand__name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  white-space: nowrap;
}
.lab-brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--accent);
  text-transform: uppercase;
  margin-top: 1px;
}

.lab-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.lab-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 15px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  color: var(--text-2);
  position: relative;
  transition: all var(--dur) var(--ease);
}
.lab-nav__link::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}
.lab-nav__link:hover,
.lab-nav__link.is-active {
  color: var(--text);
  background: var(--panel-2);
}
.lab-nav__link:hover::after,
.lab-nav__link.is-active::after {
  transform: scaleX(1);
}
.lab-nav__link.is-active {
  color: var(--accent);
}

.lab-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lab-icon-btn {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-2);
  transition: all var(--dur) var(--ease);
}
.lab-icon-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow);
}
.lab-icon-btn svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.8;
}
.lab-icon-btn--menu {
  display: none;
}

/* 下拉菜单 */
.lab-dropdown {
  position: relative;
}
.lab-dropdown__menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 170px;
  padding: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(6px) scale(0.98);
  pointer-events: none;
  transition: all 0.16s var(--ease);
  z-index: 70;
}
.lab-dropdown.is-open .lab-dropdown__menu {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.lab-dropdown__item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  border-radius: 7px;
  font-size: 13.5px;
  color: var(--text-2);
  text-align: left;
  transition: all 0.15s var(--ease);
}
.lab-dropdown__item:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
.lab-dropdown__item.is-current {
  color: var(--accent);
}

/* 移动端菜单 */
.lab-mobile {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: 18px 22px 34px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0.25s;
}
.lab-mobile.is-open {
  opacity: 1;
  visibility: visible;
}
.lab-mobile__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}
.lab-mobile__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}
.lab-mobile__link {
  padding: 14px 8px;
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.lab-mobile__link small {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.2em;
}
.lab-mobile__link:hover {
  color: var(--accent);
  padding-left: 14px;
}
.lab-mobile__children {
  padding: 4px 0 10px 20px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.lab-mobile__children a {
  padding: 8px;
  font-size: 14.5px;
  color: var(--text-2);
}
.lab-mobile__children a:hover {
  color: var(--accent);
}
.lab-mobile__foot {
  margin-top: auto;
  display: flex;
  gap: 10px;
}

/* ============================================================
   首页 Hero —— 研究控制台
   ============================================================ */
.lab-hero {
  position: relative;
  padding: 64px 0 44px;
  overflow: hidden;
}
.lab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(640px 300px at 12% 18%, rgba(46, 230, 168, 0.09), transparent 65%),
    radial-gradient(700px 340px at 88% 30%, rgba(110, 199, 255, 0.07), transparent 62%);
  pointer-events: none;
}
.lab-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: center;
}

.lab-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-2);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.lab-hero__kicker .led {
  animation-play-state: running;
}

.lab-hero__title {
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}
.lab-hero__title .grad {
  background: linear-gradient(92deg, var(--accent) 20%, var(--accent-2) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lab-hero__subtitle {
  margin-top: 18px;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text-2);
  max-width: 560px;
}
.lab-hero__type {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--accent);
  min-height: 24px;
}
.lab-hero__type::before {
  content: "> ";
  opacity: 0.6;
}
.lab-hero__type .cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  background: var(--accent);
  vertical-align: -2px;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.lab-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* 状态面板 */
.lab-console {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.lab-console__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
}
.lab-console__bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.lab-console__bar i:nth-child(1) { background: var(--danger); }
.lab-console__bar i:nth-child(2) { background: var(--accent-2); }
.lab-console__bar i:nth-child(3) { background: var(--accent); }
.lab-console__bar span {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-3);
  text-transform: uppercase;
}
.lab-console__body {
  padding: 20px 20px 18px;
}
.lab-console__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13.5px;
}
.lab-console__row:last-child {
  border-bottom: none;
}
.lab-console__row dt {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.lab-console__row dd {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  text-align: right;
}
.lab-console__row dd .num {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}
.lab-console__gauge {
  height: 6px;
  border-radius: 6px;
  background: var(--panel-3);
  overflow: hidden;
  margin-top: 14px;
}
.lab-console__gauge i {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 0;
  transition: width 1.2s var(--ease);
}
.lab-console__hint {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
  text-align: right;
}

/* ============================================================
   文章卡片 —— 实验记录
   ============================================================ */
.lab-postlist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.lab-postlist--single {
  grid-template-columns: 1fr;
}

.lab-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.lab-card:hover {
  transform: translateY(-4px);
  border-color: rgba(46, 230, 168, 0.4);
  box-shadow: var(--glow);
}
.lab-card__num {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-3);
  padding: 2px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 84%, transparent);
  backdrop-filter: blur(4px);
}
.lab-card--pinned .lab-card__num {
  color: var(--accent-2);
  border-color: rgba(255, 180, 84, 0.5);
}
.lab-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--panel-2);
}
.lab-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.lab-card:hover .lab-card__cover img {
  transform: scale(1.05);
}
.lab-card__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in srgb, var(--panel) 85%, transparent));
  pointer-events: none;
}
.lab-card--noimg .lab-card__cover {
  aspect-ratio: auto;
  min-height: 110px;
  background:
    linear-gradient(rgba(148, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.07) 1px, transparent 1px),
    var(--panel-2);
  background-size: 26px 26px;
  display: grid;
  place-items: center;
}
.lab-card--noimg .lab-card__cover svg {
  width: 42px;
  height: 42px;
  opacity: 0.35;
}
.lab-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 20px 18px;
}
.lab-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.lab-card__date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.05em;
}
.lab-card__meta-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-3);
}
.lab-card__cat {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.lab-card__title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--dur) var(--ease);
}
.lab-card__title a {
  color: inherit;
}
.lab-card__title a:hover {
  color: var(--accent);
}
.lab-card__excerpt {
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.lab-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}
.lab-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  min-width: 0;
}
.lab-card__readmore {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--text-3);
  text-transform: uppercase;
  white-space: nowrap;
  transition: all var(--dur) var(--ease);
}
.lab-card__readmore:hover {
  color: var(--accent);
  gap: 10px;
}

/* 最新实验（hero 下方首卡大图） */
.lab-featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  background: linear-gradient(120deg, var(--panel-2), var(--panel));
  border-color: rgba(46, 230, 168, 0.28);
}
.lab-featured:hover {
  border-color: rgba(46, 230, 168, 0.55);
}
.lab-featured .lab-card__cover {
  aspect-ratio: auto;
  min-height: 100%;
}
.lab-featured .lab-card__body {
  padding: 30px;
}
.lab-featured .lab-card__title {
  font-size: 25px;
  -webkit-line-clamp: 3;
}
.lab-featured .lab-card__excerpt {
  -webkit-line-clamp: 3;
  font-size: 14.5px;
}

/* ============================================================
   页面布局骨架
   ============================================================ */
.lab-page {
  padding: 40px 0 20px;
}
.lab-main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  align-items: start;
}
.lab-main-grid--full {
  grid-template-columns: minmax(0, 1fr);
}

/* 页头（列表页/分类页等） */
.lab-pagehead {
  padding: 30px 0 8px;
}
.lab-pagehead__crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.lab-pagehead__crumb a:hover {
  color: var(--accent);
}
.lab-pagehead h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.lab-pagehead h1 .led {
  animation-play-state: running;
}
.lab-pagehead__desc {
  margin-top: 12px;
  color: var(--text-2);
  font-size: 15px;
  max-width: 640px;
}
.lab-pagehead__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-top: 8px;
}

/* 筛选条 */
.lab-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 6px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--border);
}
.lab-filter {
  padding: 5px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text-2);
  background: var(--panel);
  transition: all var(--dur) var(--ease);
}
.lab-filter:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.lab-filter.is-active {
  color: #06120d;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* 分页 */
.lab-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 44px 0 10px;
}
.lab-pagination .lab-btn {
  min-width: 110px;
}
.lab-pagination select {
  appearance: none;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 34px 9px 14px;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-3) 50%),
    linear-gradient(135deg, var(--text-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
}

/* ============================================================
   文章页
   ============================================================ */
.lab-post {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.lab-post__hero {
  position: relative;
  padding: 38px 40px 26px;
  background:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(160deg, var(--panel-3), var(--panel));
  background-size: 30px 30px, 30px 30px, 100% 100%;
  border-bottom: 1px solid var(--border);
}
.lab-post__hero--cover {
  padding: 0;
  background: none;
}
.lab-post__heroimg {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}
.lab-post__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.lab-post__title {
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--text);
}
.lab-post__metaline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.lab-post__author {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.lab-post__author img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  object-fit: cover;
}
.lab-post__author span {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
}
.lab-post__stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
}
.lab-post__stat svg {
  width: 15px;
  height: 15px;
  stroke-width: 1.7;
}
.lab-post__actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.lab-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-2);
  transition: all var(--dur) var(--ease);
}
.lab-action-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.lab-action-btn.is-upvoted {
  color: var(--danger);
  border-color: rgba(255, 92, 108, 0.5);
  background: rgba(255, 92, 108, 0.08);
}
.lab-action-btn svg {
  width: 15px;
  height: 15px;
  stroke-width: 1.8;
}

.lab-post__body {
  padding: 34px 40px 40px;
}

/* 正文排版 */
.lab-article {
  font-size: 16px;
  line-height: 1.95;
  color: var(--text);
  word-break: break-word;
}
.lab-article > * + * {
  margin-top: 1.15em;
}
.lab-article h1,
.lab-article h2,
.lab-article h3,
.lab-article h4,
.lab-article h5,
.lab-article h6 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-top: 2em;
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.lab-article h1 {
  font-size: 1.75em;
  padding-bottom: 0.45em;
  border-bottom: 1px solid var(--border);
}
.lab-article h2 {
  font-size: 1.45em;
  padding: 0.4em 0 0.45em 0.85em;
  border-left: 4px solid var(--accent);
  background: linear-gradient(90deg, var(--accent-soft), transparent 70%);
  border-radius: 0 8px 8px 0;
}
.lab-article h3 {
  font-size: 1.22em;
}
.lab-article h3::before {
  content: "▸ ";
  color: var(--accent-2);
}
.lab-article h4 {
  font-size: 1.05em;
  color: var(--text-2);
}
.lab-article a {
  color: var(--link);
  border-bottom: 1px solid rgba(110, 199, 255, 0.35);
  padding-bottom: 1px;
  transition: all 0.15s var(--ease);
}
.lab-article a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.lab-article p,
.lab-article ul,
.lab-article ol,
.lab-article table,
.lab-article blockquote,
.lab-article pre,
.lab-article .codehilite {
  margin-top: 1.15em;
}
.lab-article ul {
  list-style: none;
  padding-left: 6px;
}
.lab-article ul > li {
  position: relative;
  padding-left: 22px;
  margin-top: 0.5em;
}
.lab-article ul > li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.78em;
  width: 7px;
  height: 7px;
  background: var(--accent);
  transform: rotate(45deg);
  box-shadow: 0 0 6px var(--accent);
}
.lab-article ol {
  list-style: none;
  counter-reset: lab-ol;
  padding-left: 6px;
}
.lab-article ol > li {
  counter-increment: lab-ol;
  position: relative;
  padding-left: 34px;
  margin-top: 0.5em;
}
.lab-article ol > li::before {
  content: counter(lab-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--panel-2);
}
.lab-article li > ul,
.lab-article li > ol {
  margin-top: 0.4em;
}
.lab-article blockquote {
  position: relative;
  padding: 14px 20px 14px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--panel-2);
  border-left: 3px solid var(--accent-2);
  color: var(--text-2);
  font-style: normal;
}
.lab-article blockquote p {
  margin: 0;
}
.lab-article code:not(pre code) {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.2em 0.45em;
  border-radius: 6px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  color: var(--accent-2);
  white-space: nowrap;
}
.lab-article pre,
.lab-article .codehilite {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--code-text);
  position: relative;
}
.lab-article pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  white-space: pre;
}
.lab-article .codehilite pre {
  padding: 0;
  background: none;
  border: none;
  margin: 0;
}
.lab-article .codehilite {
  padding: 18px 20px;
}
/* 代码高亮配色（pygments 兼容） */
.lab-article .k, .lab-article .kc, .lab-article .kd, .lab-article .kn,
.lab-article .kr, .lab-article .kt, .lab-article .ow { color: #7ee0ff; }
.lab-article .s, .lab-article .s1, .lab-article .s2, .lab-article .sb,
.lab-article .sc, .lab-article .sd, .lab-article .se, .lab-article .sh,
.lab-article .si, .lab-article .sr, .lab-article .sx, .lab-article .sas { color: #9ff0c5; }
.lab-article .c, .lab-article .c1, .lab-article .cm, .lab-article .cs,
.lab-article .cp, .lab-article .cpf { color: #5c6b84; font-style: italic; }
.lab-article .m, .lab-article .mi, .lab-article .mf, .lab-article .mo,
.lab-article .mh, .lab-article .mn, .lab-article .mb, .lab-article .mx { color: #ffb454; }
.lab-article .nf, .lab-article .fm, .lab-article .nc, .lab-article .nn { color: #ffd28f; }
.lab-article .nb, .lab-article .na, .lab-article .nv, .lab-article .vc,
.lab-article .vg, .lab-article .vi, .lab-article .vm, .lab-article .bp { color: #e8edf6; }
.lab-article .o, .lab-article .p, .lab-article .nl { color: #8fa1bd; }
.lab-article .err { color: var(--danger); }
.lab-article .gd { color: var(--danger); }
.lab-article .gi { color: var(--accent); }
[data-theme="light"] .lab-article .k,
[data-theme="light"] .lab-article .kc,
[data-theme="light"] .lab-article .kd,
[data-theme="light"] .lab-article .kn,
[data-theme="light"] .lab-article .kr,
[data-theme="light"] .lab-article .kt,
[data-theme="light"] .lab-article .ow { color: #0b6f9e; }
[data-theme="light"] .lab-article .s,
[data-theme="light"] .lab-article .s1,
[data-theme="light"] .lab-article .s2 { color: #177a4f; }
[data-theme="light"] .lab-article .c,
[data-theme="light"] .lab-article .c1,
[data-theme="light"] .lab-article .cm { color: #8a94a6; }
[data-theme="light"] .lab-article .m,
[data-theme="light"] .lab-article .mi,
[data-theme="light"] .lab-article .mf { color: #b06a08; }
[data-theme="light"] .lab-article .nf,
[data-theme="light"] .lab-article .nc { color: #9a5c00; }

.lab-article hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  margin: 2.2em auto;
  width: 70%;
}
.lab-article table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
.lab-article th {
  background: var(--panel-2);
  color: var(--text);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-align: left;
}
.lab-article th,
.lab-article td {
  padding: 11px 14px;
  border: 1px solid var(--border);
}
.lab-article tbody tr {
  transition: background 0.15s;
}
.lab-article tbody tr:hover {
  background: var(--panel-2);
}
.lab-article img {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin: 1.4em auto;
}
.lab-article .footnote {
  font-size: 13px;
  color: var(--text-3);
}
.lab-article iframe {
  max-width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* 标签行 */
.lab-post__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
}
.lab-post__tags .lab-chip {
  padding: 4px 14px;
}

/* 上下篇 —— 实验日志 */
.lab-postnav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 26px;
}
.lab-postnav a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--dur) var(--ease);
  min-width: 0;
}
.lab-postnav a:hover {
  border-color: var(--accent);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}
.lab-postnav a.next {
  text-align: right;
  align-items: flex-end;
}
.lab-postnav small {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}
.lab-postnav a:hover small {
  color: var(--accent);
}
.lab-postnav span {
  font-size: 14.5px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

/* 评论区 */
.lab-comments {
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px dashed var(--border);
}
.lab-comments__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
}
.lab-comments__title .led {
  animation-play-state: running;
}

/* 目录 */
.lab-toc {
  position: sticky;
  top: calc(var(--header-h) + 22px);
  max-height: calc(100vh - var(--header-h) - 44px);
  overflow-y: auto;
}
.lab-toc__title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--border);
}
.lab-toc__title svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.8;
}
.lab-toc ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.lab-toc a {
  display: block;
  padding: 6px 12px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-2);
  border-left: 2px solid var(--border);
  transition: all 0.15s var(--ease);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lab-toc a:hover {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
}
.lab-toc a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
}
.lab-toc a.toc-h3 {
  padding-left: 24px;
  font-size: 12.5px;
}
.lab-toc a.toc-h4 {
  padding-left: 36px;
  font-size: 12px;
}

/* ============================================================
   侧栏
   ============================================================ */
.lab-sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.lab-widget {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.lab-widget__head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 13px 18px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
}
.lab-widget__head svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.8;
  color: var(--accent);
}
.lab-widget__head h3 {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
}
.lab-widget__body {
  padding: 16px 18px;
}

/* 关于卡 */
.lab-about {
  text-align: center;
}
.lab-about .lab-about__logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  border-radius: 18px;
  border: 1px solid var(--border-strong);
  background: var(--panel-2);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-sm);
}
.lab-about .lab-about__logo svg {
  width: 34px;
  height: 34px;
}
.lab-about .lab-about__logo .flask { fill: var(--accent); }
.lab-about .lab-about__logo .bubble { fill: var(--accent-2); }
.lab-about h4 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
}
.lab-about p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-2);
}
.lab-about__leds {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.lab-about__leds span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* 分类/标签列表 */
.lab-wlist {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.lab-wlist a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-2);
  transition: all 0.15s var(--ease);
}
.lab-wlist a:hover {
  color: var(--accent);
  background: var(--accent-soft);
  padding-left: 16px;
}
.lab-wlist a small {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
  padding: 1px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.lab-wlist a:hover small {
  color: var(--accent);
  border-color: var(--accent);
}
.lab-wlist--sub {
  padding-left: 18px;
  border-left: 1px dashed var(--border);
  margin-left: 12px;
}

/* 标签云 */
.lab-wtags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.lab-wtags a {
  padding: 3px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all var(--dur) var(--ease);
}
.lab-wtags a:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  transform: translateY(-1px);
}
.lab-wtags a small {
  opacity: 0.6;
  font-size: 10px;
}

/* 热门文章 */
.lab-wposts {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.lab-wposts a {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.lab-wposts img {
  width: 58px;
  height: 58px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.lab-wposts .thumb {
  width: 58px;
  height: 58px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.1em;
}
.lab-wposts__body {
  min-width: 0;
}
.lab-wposts__body h4 {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text);
  font-weight: 600;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.15s;
}
.lab-wposts a:hover h4 {
  color: var(--accent);
}
.lab-wposts__body time {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
}

/* 社交 */
.lab-social {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.lab-social a {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text-2);
  transition: all var(--dur) var(--ease);
}
.lab-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}
.lab-social a svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.8;
}

/* ============================================================
   页脚
   ============================================================ */
.lab-footer {
  margin-top: 70px;
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  position: relative;
}
.lab-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}
.lab-footer__main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding: 48px 0 36px;
}
.lab-footer__brand p {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-2);
  max-width: 340px;
}
.lab-footer__brand .lab-social {
  margin-top: 18px;
}
.lab-footer__col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.lab-footer__col h4::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--accent);
}
.lab-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lab-footer__col a {
  font-size: 14px;
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.lab-footer__col a::before {
  content: "▸";
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.2s var(--ease);
}
.lab-footer__col a:hover {
  color: var(--accent);
}
.lab-footer__col a:hover::before {
  opacity: 1;
  transform: none;
}
.lab-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0 26px;
  border-top: 1px dashed var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}
.lab-footer__bottom a {
  color: var(--text-3);
}
.lab-footer__bottom a:hover {
  color: var(--accent);
}
.lab-footer__beian {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.lab-footer__beian span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ============================================================
   分享弹窗 / 返回顶部 / 遮罩
   ============================================================ */
.lab-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(6, 10, 16, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0.25s;
}
.lab-overlay.is-open {
  opacity: 1;
  visibility: visible;
}
.lab-modal {
  width: min(440px, 100%);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transform: translateY(14px) scale(0.97);
  transition: transform 0.25s var(--ease);
}
.lab-overlay.is-open .lab-modal {
  transform: none;
}
.lab-modal__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}
.lab-modal__body {
  padding: 22px 20px;
}
.lab-share-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.lab-share-grid button,
.lab-share-grid a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 12px;
  transition: all var(--dur) var(--ease);
}
.lab-share-grid button:hover,
.lab-share-grid a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}
.lab-share-grid svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.7;
}
.lab-copylink {
  display: flex;
  gap: 8px;
  margin-top: 18px;
}
.lab-copylink input {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text);
}
.lab-copylink input:focus {
  outline: none;
  border-color: var(--accent);
}
.lab-toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%) translateY(20px);
  z-index: 120;
  padding: 10px 22px;
  background: var(--panel-3);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--ease);
  font-family: var(--font-mono);
  white-space: nowrap;
}
.lab-toast.is-show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%);
}

#btn-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 50;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text-2);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--dur) var(--ease);
}
#btn-to-top.is-show {
  opacity: 1;
  visibility: visible;
  transform: none;
}
#btn-to-top:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow);
}
#btn-to-top svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

/* ============================================================
   归档 / 友链 / 相册 / 动态 等列表页
   ============================================================ */
.lab-timeline {
  position: relative;
  padding-left: 30px;
}
.lab-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--border), transparent);
}
.lab-timeline__year {
  position: relative;
  margin: 30px 0 14px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}
.lab-timeline__year::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 50%;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
  box-shadow: 0 0 10px var(--accent);
}
.lab-timeline__year:first-child {
  margin-top: 4px;
}
.lab-timeline__item {
  display: flex;
  gap: 14px;
  padding: 10px 0;
  align-items: baseline;
  border-bottom: 1px dashed var(--border);
}
.lab-timeline__item:last-child {
  border-bottom: none;
}
.lab-timeline__date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  width: 88px;
  flex-shrink: 0;
}
.lab-timeline__item a {
  font-size: 15px;
  color: var(--text);
  transition: color 0.15s;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lab-timeline__item a:hover {
  color: var(--accent);
}

/* 友链 */
.lab-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.lab-links__group {
  grid-column: 1 / -1;
  margin-top: 12px;
}
.lab-links__group h2 {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.lab-links__group h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.lab-link-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--dur) var(--ease);
}
.lab-link-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--glow);
}
.lab-link-card img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--border);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--panel-2);
}
.lab-link-card h3 {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--text);
}
.lab-link-card p {
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 相册 */
.lab-photos {
  columns: 3 220px;
  column-gap: 16px;
}
.lab-photos figure {
  break-inside: avoid;
  margin-bottom: 16px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: all var(--dur) var(--ease);
}
.lab-photos figure:hover {
  border-color: var(--accent);
  box-shadow: var(--glow);
}
.lab-photos img {
  width: 100%;
}
.lab-photos figcaption {
  padding: 8px 12px;
  font-size: 12.5px;
  color: var(--text-2);
}

/* 动态 moments 卡片 */
.lab-moments {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.lab-moment {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.lab-moment__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.lab-moment__head img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
}
.lab-moment__head strong {
  font-size: 14px;
  color: var(--text);
}
.lab-moment__head time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
}
.lab-moment p {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-2);
}

/* 错误页 */
.lab-error {
  text-align: center;
  padding: 90px 20px;
}
.lab-error__code {
  font-family: var(--font-mono);
  font-size: clamp(80px, 14vw, 150px);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lab-error__msg {
  margin-top: 18px;
  font-size: 17px;
  color: var(--text-2);
}
.lab-error .lab-btn {
  margin-top: 30px;
}

/* ============================================================
   动效
   ============================================================ */
.lab-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.lab-reveal.is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .lab-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .lab-main-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .lab-sidebar {
    display: none;
  }
  .lab-hero__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .lab-footer__main {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .lab-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 58px;
  }
  .lab-nav {
    display: none;
  }
  .lab-icon-btn--menu {
    display: grid;
  }
  .lab-postlist {
    grid-template-columns: 1fr;
  }
  .lab-featured {
    grid-template-columns: 1fr;
  }
  .lab-featured .lab-card__cover {
    aspect-ratio: 16 / 9;
  }
  .lab-post__hero,
  .lab-post__body {
    padding-left: 20px;
    padding-right: 20px;
  }
  .lab-postnav {
    grid-template-columns: 1fr;
  }
  .lab-footer__main {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 36px;
  }
  .lab-hero {
    padding-top: 40px;
  }
  .lab-timeline__item {
    flex-direction: column;
    gap: 2px;
  }
  .lab-links {
    grid-template-columns: 1fr;
  }
  .lab-page {
    padding-top: 24px;
  }
  .lab-pagehead {
    padding-top: 18px;
  }
}

/* 打印 */
@media print {
  .lab-header,
  .lab-footer,
  .lab-sidebar,
  .lab-postnav,
  #btn-to-top,
  .lab-post__actions,
  .lab-toc {
    display: none !important;
  }
  body {
    background: #fff;
    color: #111;
  }
  .lab-post {
    border: none;
  }
}

/* ============================================================
   友链 / 动态 / 相册 / 灯箱 补充
   ============================================================ */
.lab-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 44px 0 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.lab-group-title.is-first {
  margin-top: 34px;
}
.lab-group-title__no {
  color: var(--accent);
  font-weight: 800;
}
.lab-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
}

/* 动态正文 */
.lab-moment__content {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-2);
  word-break: break-word;
}
.lab-moment__content p {
  margin: 0 0 10px;
}
.lab-moment__content p:last-child {
  margin-bottom: 0;
}
.lab-moment__content ul,
.lab-moment__content ol {
  margin: 8px 0 12px;
  padding-left: 22px;
}
.lab-moment__content li {
  margin: 4px 0;
}
.lab-moment__content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.lab-moment__content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
}

/* 动态媒体 */
.lab-moment__media {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
}
.lab-moment__media figure.is-single {
  grid-column: 1 / -1;
}
.lab-moment__media figure {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel-2);
  cursor: zoom-in;
}
.lab-moment__media img,
.lab-moment__media video {
  display: block;
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
}
.lab-moment__media video {
  cursor: default;
}

/* 动态操作条 */
.lab-moment__foot {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.lab-moment__action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  padding: 4px 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.lab-moment__action svg {
  width: 15px;
  height: 15px;
}
.lab-moment__action:hover,
.lab-moment__action.is-active {
  color: var(--accent);
}
.lab-moment__action.is-upvoted {
  color: #ff6b81;
}
.lab-moment__comments {
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
}

/* 社交按钮（按钮版图标，与链接同款） */
.lab-social button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text-2);
  background: transparent;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.lab-social button:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}
.lab-social button svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.8;
}

/* 灯箱 */
.lab-lightbox {
  margin: 0;
  padding: 14px;
  max-width: min(92vw, 1100px);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.lab-lightbox img {
  max-width: 100%;
  max-height: calc(88vh - 80px);
  object-fit: contain;
  border-radius: var(--radius);
  background: var(--panel-2);
  border: 1px solid var(--border-strong);
}
.lab-lightbox figcaption {
  font-size: 13px;
  color: var(--text-2);
  text-align: center;
  font-family: var(--font-mono);
}
.lab-lightbox__close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.lab-lightbox__close:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(90deg);
}