/* ==========================================================================
   Sxtx · 纸境工坊 · Studio Editorial Craft CSS
   Design Intelligence: Swiss Grid / Editorial Takeo Paper / No-AI-Slop
   ========================================================================== */

:root {
  --bg-paper: #fcfbf9;
  --bg-card: #ffffff;
  --bg-subtle: #f5f4ef;
  --bg-hover: #f0eee6;
  
  --border-line: rgba(225, 221, 212, 0.85);
  --border-subtle: rgba(235, 232, 226, 0.6);
  --border-focus: #18181b;

  --text-title: #18181b;
  --text-body: #27272a;
  --text-muted: #52525b;
  --text-faint: #78716c;

  --brand-seal: #b91c1c;
  --brand-seal-bg: rgba(185, 28, 28, 0.05);
  --brand-emerald: #059669;
  --brand-emerald-bg: rgba(5, 150, 105, 0.08);

  --font-serif: -apple-system-ui-serif, 'Lora', 'Songti SC', 'Noto Serif CJK SC', 'Source Han Serif SC', 'Source Han Serif CN', 'STSong', 'SimSun-ExtB', 'SimSun', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Plus Jakarta Sans', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', Menlo, Monaco, Consolas, monospace;

  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 160ms var(--ease-spring);
  --transition-normal: 240ms var(--ease-spring);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.02), 0 10px 24px -8px rgba(0, 0, 0, 0.04);
  --shadow-modal: 0 20px 40px -10px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.05);
}

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

html {
  scrollbar-gutter: stable;
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-paper);
  color: var(--text-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  background-color: var(--bg-paper);
  color: var(--text-body);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Subtle Paper Texture Noise Overlay */
.paper-grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Top Reading Progress Bar (Fuwari-inspired gradient with glow) */
.read-progress-line {
  position: fixed;
  top: 0;
  left: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--accent-seal, #b83b3b) 0%, #e05d5d 100%);
  box-shadow: 0 0 8px rgba(184, 59, 59, 0.45);
  z-index: 10000;
  pointer-events: none;
  transition: width 0.1s linear;
}

/* SVG Icon Helper */
.svg-icon {
  width: 1.15rem;
  height: 1.15rem;
  display: inline-block;
  vertical-align: middle;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Floating Navigation Dock
   -------------------------------------------------------------------------- */
.nav-dock-container {
  position: fixed;
  top: 1rem;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  z-index: 500;
  padding: 0 1rem;
  pointer-events: none;
}

.nav-dock {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(252, 251, 249, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-line);
  padding: 0.45rem 1.1rem;
  border-radius: 9999px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-dock:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: var(--text-title);
  font-weight: 600;
}

.brand-serif {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-sep {
  color: var(--border-line);
  font-weight: 300;
}

.brand-sub {
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.35rem 0.65rem;
  border-radius: 9999px;
  transition: all var(--transition-fast);
}

.nav-item .nav-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}

.nav-item:hover {
  color: var(--text-title);
  background: var(--bg-hover);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--border-line);
}

.icon-btn {
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.35rem 0.5rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all var(--transition-fast);
  position: relative;
}

.icon-btn:hover {
  color: var(--text-title);
  background: var(--bg-hover);
}

.key-shortcut {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  border: 1px solid var(--border-line);
  border-radius: 4px;
  padding: 0.05rem 0.3rem;
  color: var(--text-faint);
  background: #ffffff;
}

.admin-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 6px;
  height: 6px;
  background: var(--brand-emerald);
  border-radius: 50%;
}

/* --------------------------------------------------------------------------
   Page Container & Grid Layout
   -------------------------------------------------------------------------- */
.page-container {
  max-width: 920px;
  margin: 0 auto;
  padding: 7rem 1.5rem 5rem;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 1.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border-line);
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--brand-emerald-bg);
  border: 1px solid rgba(5, 150, 105, 0.18);
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--brand-emerald);
  margin-bottom: 1.75rem;
}

.pulse-indicator {
  position: relative;
  width: 8px;
  height: 8px;
  display: inline-flex;
}

.pulse-ring {
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: var(--brand-emerald);
  opacity: 0.4;
  animation: pulse-ring 2s cubic-bezier(0.24, 0, 0.38, 1) infinite;
}

.pulse-core {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-emerald);
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.6; }
  70% { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(2.2); opacity: 0; }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-title);
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero-bio {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 780px;
  margin-bottom: 2rem;
}

.hero-bio strong {
  color: var(--text-title);
  font-weight: 600;
}

.hero-meta-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2rem;
}

/* Red Seal Stamp (Carved Chop Stamp) */
.seal-stamp {
  width: 68px;
  height: 68px;
  border: 2.5px solid var(--brand-seal);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-seal-bg);
  box-shadow: inset 0 0 0 1.5px rgba(185, 28, 28, 0.25), 0 2px 5px rgba(185, 28, 28, 0.1);
  transform: rotate(-2.5deg);
  user-select: none;
  transition: transform var(--transition-fast);
}

.seal-stamp:hover {
  transform: rotate(0deg) scale(1.05);
}

.seal-inner {
  color: var(--brand-seal);
  font-family: var(--font-serif);
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  letter-spacing: 0.08em;
}

/* System Metrics Mini Console */
.sys-metrics-panel {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  padding: 0.65rem 1.15rem;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.metric-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}

.metric-val {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-title);
}

/* --------------------------------------------------------------------------
   Content Sections Common Header
   -------------------------------------------------------------------------- */
.content-section {
  padding: 4rem 0 2rem;
  border-bottom: 1px solid var(--border-line);
}

.section-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.sec-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.sec-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-faint);
  font-weight: 500;
}

.sec-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-title);
  letter-spacing: -0.01em;
}

.sec-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

.sec-note {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Category Filter Tabs */
.category-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-subtle);
  padding: 0.25rem;
  border-radius: 9999px;
  border: 1px solid var(--border-subtle);
}

.cat-tab {
  background: transparent;
  border: none;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cat-tab:hover {
  color: var(--text-title);
}

.cat-tab.active {
  background: var(--bg-card);
  color: var(--text-title);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* --------------------------------------------------------------------------
   SECTION 1: Essays Feed & Featured Slot
   -------------------------------------------------------------------------- */
/* Featured Essay Hero Card */
.featured-essay-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 12px;
  padding: 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
}

.featured-essay-card:hover {
  transform: translateY(-2px);
  border-color: var(--text-title);
  box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.07);
}

.featured-badge-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.pill-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background: var(--bg-subtle);
  color: var(--text-title);
  border: 1px solid var(--border-subtle);
}

.featured-date {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.featured-title {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.35;
  margin-bottom: 0.85rem;
  letter-spacing: -0.015em;
}

.featured-summary {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 1.5rem;
}

.read-more-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-title);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.featured-essay-card:hover .read-more-action {
  border-bottom-color: var(--text-title);
}

.read-more-action svg {
  transition: transform var(--transition-fast);
}

.featured-essay-card:hover .read-more-action svg {
  transform: translateX(4px);
}

/* Essays Index Table of Contents */
.essays-feed {
  display: flex;
  flex-direction: column;
}

.essay-row-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.15rem 0.5rem;
  border-bottom: 1px dashed var(--border-line);
  cursor: pointer;
  transition: background var(--transition-fast), padding-left var(--transition-fast);
  border-radius: 6px;
}

.essay-row-item:hover {
  background: var(--bg-hover);
  padding-left: 0.85rem;
}

.essay-row-left {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  flex: 1;
}

.essay-date-col {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  min-width: 95px;
}

.essay-title-col {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-title);
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.essay-row-item:hover .essay-title-col {
  color: var(--brand-seal, #b83b3b);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.essay-row-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.essay-cat-pill {
  font-size: 0.72rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.essay-readtime-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
}

.essay-arrow-icon {
  color: var(--text-faint);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.essay-row-item:hover .essay-arrow-icon {
  color: var(--text-title);
  transform: translate(2px, -2px);
}

/* --------------------------------------------------------------------------
   SECTION 2: Moments Vertical Timeline
   -------------------------------------------------------------------------- */
.moments-timeline {
  position: relative;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.moments-timeline::before {
  content: '';
  position: absolute;
  top: 1rem;
  bottom: 1rem;
  left: 15px;
  width: 2px;
  background: var(--border-line);
}

.moment-entry {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 10px;
  padding: 1.15rem 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.moment-entry:hover {
  border-color: rgba(184, 59, 59, 0.3);
  transform: translateX(3px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

.moment-dot {
  position: absolute;
  top: 1.4rem;
  left: calc(-2rem + 9px);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-paper);
  border: 2.5px solid var(--brand-seal, #b83b3b);
  box-shadow: 0 0 0 3px var(--bg-paper);
}

.moment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.65rem;
}

.moment-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.moment-time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

.moment-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-body);
}

/* --------------------------------------------------------------------------
   SECTION 3: Artifacts Grid
   -------------------------------------------------------------------------- */
.artifacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.artifact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 10px;
  padding: 1.65rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.artifact-card:hover {
  transform: translateY(-2px);
  border-color: var(--text-title);
  box-shadow: var(--shadow-card);
}

.art-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.art-icon-box {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-title);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  border: 1px solid transparent;
}

.status-badge.active {
  background: var(--brand-emerald-bg);
  color: var(--brand-emerald);
  border-color: rgba(5, 150, 105, 0.2);
}

.status-badge.current {
  background: rgba(30, 41, 59, 0.08);
  color: #1e293b;
  border-color: rgba(30, 41, 59, 0.2);
}

.mini-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.art-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 0.6rem;
}

.art-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-body);
  margin-bottom: 1.25rem;
  flex: 1;
}

.art-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.15rem 0.45rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   SECTION 4: Timeline & Milestones (Replaces 52-week Heatmap)
   -------------------------------------------------------------------------- */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.timeline-stats-bar {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.tstat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.tstat-val {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1;
}

.tstat-status {
  font-size: 1.05rem;
  color: var(--brand-emerald);
}

.tstat-lbl {
  font-size: 0.76rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

.tstat-sep {
  width: 1px;
  height: 28px;
  background: var(--border-subtle);
}

.timeline-stream {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 0.25rem;
}

.timeline-entry {
  display: flex;
  position: relative;
  gap: 1.25rem;
}

.tl-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 20px;
  flex-shrink: 0;
  padding-top: 1.35rem;
}

.tl-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg-paper);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 3px var(--bg-subtle);
  z-index: 2;
  transition: transform 0.2s ease, background 0.2s ease;
}

.timeline-entry:first-child .tl-dot {
  background: var(--brand-emerald);
  border-color: var(--brand-emerald);
  box-shadow: 0 0 0 3px rgba(33, 110, 57, 0.15);
}

.tl-line {
  flex-grow: 1;
  width: 1.5px;
  background: var(--border-line);
  margin-top: 4px;
}

.tl-card {
  flex-grow: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 10px;
  padding: 1.35rem 1.6rem;
  margin-bottom: 1.15rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.tl-card:hover {
  transform: translateX(3px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.tl-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}

.tl-badge {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  padding: 0.18rem 0.55rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--accent);
  font-weight: 500;
}

.timeline-entry:first-child .tl-badge {
  background: rgba(33, 110, 57, 0.08);
  border-color: rgba(33, 110, 57, 0.25);
  color: var(--brand-emerald);
}

.tl-time {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

.tl-title {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-heading);
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.01em;
}

.tl-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.tl-desc code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.1rem 0.35rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  color: var(--accent);
}

.timeline-footer-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-faint);
  padding: 0.5rem 0;
  margin-top: -0.25rem;
}

.tl-tail-icon {
  font-size: 0.75rem;
  color: var(--accent);
  opacity: 0.6;
}

@media (max-width: 640px) {
  .timeline-stats-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1rem;
  }
  .tstat-sep {
    display: none;
  }
  .tl-card {
    padding: 1rem;
  }
  .tl-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
}

/* --------------------------------------------------------------------------
   SECTION 5: Guestbook & Inputs
   -------------------------------------------------------------------------- */
.guestbook-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.guestbook-form {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.15rem;
  box-shadow: var(--shadow-sm);
}

.form-inputs-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.paper-input, .paper-textarea, .paper-select {
  background: var(--bg-paper);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text-title);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.paper-input:focus, .paper-textarea:focus, .paper-select:focus {
  border-color: var(--border-focus);
  background: #ffffff;
  box-shadow: 0 0 0 1px var(--border-focus);
}

.input-author {
  width: 180px;
}

.input-content {
  flex: 1;
  min-width: 220px;
}

.paper-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--text-title);
  color: #ffffff;
}

.btn-primary:hover {
  background: #000000;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-title);
  border-color: var(--border-line);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--text-title);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text-title);
  background: var(--bg-hover);
}

.btn-danger {
  background: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

.btn-danger:hover {
  background: #fecaca;
}

.messages-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.message-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.15rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.85rem;
}

.msg-body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-title);
}

.msg-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 0.5rem;
}

.msg-author {
  font-weight: 600;
  color: var(--text-title);
}

.msg-time {
  font-family: var(--font-mono);
  color: var(--text-faint);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.page-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.powered {
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-top: 0.25rem;
}

.footer-admin-btn {
  background: transparent;
  border: 1px solid var(--border-line);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  transition: all var(--transition-fast);
}

.footer-admin-btn:hover {
  background: var(--bg-hover);
  color: var(--text-title);
  border-color: var(--text-title);
}

/* --------------------------------------------------------------------------
   MODALS & DRAWERS (Reader, Search, Studio)
   -------------------------------------------------------------------------- */
.modal-overlay, .drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(24, 24, 27, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Search Modal Box */
.search-modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 12px;
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  padding: 0.85rem 1.15rem;
  border-bottom: 1px solid var(--border-line);
  gap: 0.75rem;
}

.search-lead-icon {
  color: var(--text-muted);
}

.search-input-wrap input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1.05rem;
  font-family: inherit;
  color: var(--text-title);
  background: transparent;
}

.search-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.search-hint {
  font-size: 0.85rem;
  color: var(--text-faint);
  text-align: center;
  padding: 2rem 1rem;
}

.search-result-item {
  padding: 0.65rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transition: background var(--transition-fast);
}

.search-result-item:hover, .search-result-item.selected {
  background: var(--bg-hover);
}

.sr-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-title);
}

.sr-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  gap: 0.5rem;
}

/* Reader Drawer */
.reader-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 760px;
  background: var(--bg-paper);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  z-index: 1200;
  animation: slideInRight 0.25s var(--ease-spring);
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

.drawer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-line);
  background: rgba(252, 251, 249, 0.9);
  backdrop-filter: blur(8px);
}

.drawer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.drawer-cat-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-title);
}

.drawer-date, .drawer-read-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.drawer-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.font-zoom-ctrl {
  display: flex;
  border: 1px solid var(--border-line);
  border-radius: 6px;
  overflow: hidden;
}

.font-zoom-ctrl button {
  background: var(--bg-card);
  border: none;
  padding: 0.25rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
}

.font-zoom-ctrl button:hover {
  background: var(--bg-hover);
  color: var(--text-title);
}

.drawer-content-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 2.5rem 2.5rem 5rem;
}

.drawer-article-body {
  max-width: 650px;
  margin: 0 auto;
}

.drawer-title {
  font-family: var(--font-serif);
  font-size: 2.15rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-title);
  margin-bottom: 1rem;
}

.drawer-summary {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 1.5rem;
}

.drawer-divider {
  border: none;
  border-top: 1px solid var(--border-line);
  margin-bottom: 2rem;
}

.markdown-rendered-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-body);
}

.markdown-rendered-content h2, 
.markdown-rendered-content h3 {
  font-family: var(--font-serif);
  color: var(--text-title);
  margin-top: 2rem;
  margin-bottom: 0.85rem;
}

.markdown-rendered-content p {
  margin-bottom: 1.35rem;
}

.markdown-rendered-content ul, 
.markdown-rendered-content ol {
  margin-bottom: 1.35rem;
  padding-left: 1.5rem;
}

.markdown-rendered-content li {
  margin-bottom: 0.4rem;
}

.markdown-rendered-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  padding: 0.15em 0.35em;
  border-radius: 4px;
}

.markdown-rendered-content pre {
  background: #18181b;
  color: #f4f4f5;
  padding: 1.25rem;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.markdown-rendered-content pre code {
  background: transparent;
  border: none;
  color: inherit;
  padding: 0;
}

.markdown-rendered-content blockquote {
  border-left: 3px solid var(--text-title);
  padding-left: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.35rem;
}

/* --------------------------------------------------------------------------
   ADMIN STUDIO MODAL (Modern Studio Workbench)
   -------------------------------------------------------------------------- */
.admin-studio-box {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 12px;
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.studio-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-line);
  background: var(--bg-subtle);
}

.studio-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-title);
}

.studio-title-wrap h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.studio-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.login-card {
  max-width: 380px;
  margin: 3rem auto;
  text-align: center;
}

.login-tip {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-error-msg {
  color: #dc2626;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

/* Studio Tabs */
.studio-tabs {
  display: flex;
  gap: 0.35rem;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.studio-tab {
  background: transparent;
  border: none;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.studio-tab:hover {
  color: var(--text-title);
  background: var(--bg-hover);
}

.studio-tab.active {
  background: var(--bg-hover);
  color: var(--text-title);
  font-weight: 600;
}

.studio-pane {
  display: none;
}

.studio-pane.active {
  display: block;
}

/* Editor Form */
.editor-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.field-wrap.flex-2 {
  grid-column: span 2;
}

.field-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-wrap label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.label-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.editor-word-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
}

.mono-text {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
}

.editor-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.action-align-end {
  display: flex;
  align-items: flex-end;
}

/* Studio Lists (Articles, Moments, Messages) */
.studio-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.studio-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-line);
  border-radius: 6px;
}

.studio-item-left {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex: 1;
}

.sir-title {
  font-weight: 600;
  color: var(--text-title);
  font-size: 0.95rem;
}

.sir-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.studio-item-actions {
  display: flex;
  gap: 0.5rem;
}

.action-btn-sm {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  padding: 0.25rem 0.55rem;
  font-size: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.action-btn-sm:hover {
  color: var(--text-title);
  border-color: var(--text-title);
}

.action-btn-sm.delete:hover {
  background: #fee2e2;
  color: #dc2626;
  border-color: #fca5a5;
}

/* Settings Grid */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.settings-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.settings-box h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-title);
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.5rem;
}

.logout-wrap {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid var(--border-line);
  padding-top: 1rem;
}

.form-feedback {
  font-size: 0.8rem;
  color: var(--brand-emerald);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 2000;
  pointer-events: none;
}

.toast {
  background: #18181b;
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.55rem 1.1rem;
  border-radius: 9999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: toastIn 0.25s var(--ease-spring);
}

@keyframes toastIn {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Loading skeleton */
.loading-skeleton {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.9rem;
}

/* --------------------------------------------------------------------------
   Mobile & Responsive Queries
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .nav-dock {
    gap: 0.75rem;
    padding: 0.4rem 0.8rem;
  }
  .nav-item span.nav-num {
    display: none;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-meta-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .reader-drawer {
    max-width: 100%;
  }
  .drawer-content-scroll {
    padding: 1.5rem 1.25rem 4rem;
  }
  .field-wrap.flex-2 {
    grid-column: span 1;
  }
}


.hero-subnote {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  box-shadow: var(--shadow-sm);
}

.subnote-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-emerald);
}

/* ==========================================================================
   INTELLIGENT ATELIER 2.0 ENHANCEMENTS
   Takeo Paper Minimalism · Zero-AI-Slop · Native Typographic Elegance
   ========================================================================== */

/* 1. 灵犀导读 · AI 核心思辨卡 (Article Reader Insight Brief) */
.ai-insight-card {
  margin: 1.5rem 0 2rem 0;
  background: var(--bg-hover, #f6f4ee);
  border: 1px solid var(--border-line, #e7e3d8);
  border-left: 3px solid var(--accent-seal, #b83b3b);
  border-radius: 6px;
  padding: 1.15rem 1.35rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  transition: all 0.2s ease;
}

.ai-insight-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border-line, #e2ded3);
}

.ai-insight-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif, "Noto Serif SC", serif);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary, #2d2b29);
  letter-spacing: 0.03em;
}

.ai-insight-icon {
  width: 15px;
  height: 15px;
  color: var(--accent-seal, #b83b3b);
}

.ai-insight-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ai-chip {
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  color: var(--text-muted, #7a7672);
  background: rgba(0, 0, 0, 0.03);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.ai-chip strong {
  color: var(--text-primary, #2d2b29);
  font-weight: 600;
}

.ai-insight-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.ai-insight-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-body, #42403d);
}

.ai-insight-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-seal, #b83b3b);
  font-weight: bold;
}

/* 2. 留墨回笔 · 智能墨友回赠卡 (Guestbook Echo Box) */
.msg-echo-box {
  margin-top: 0.9rem;
  padding: 0.75rem 1rem;
  background: rgba(240, 237, 230, 0.45);
  border-left: 2px solid var(--accent-seal, #b83b3b);
  border-radius: 0 4px 4px 0;
  font-size: 0.85rem;
}

.echo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.35rem;
}

.echo-tag {
  font-family: var(--font-serif, "Noto Serif SC", serif);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent-seal, #b83b3b);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.echo-time {
  font-family: var(--font-mono, monospace);
  font-size: 0.7rem;
  color: var(--text-muted, #8c8882);
}

.echo-badge-seal {
  display: inline-flex;
  align-items: center;
  font-size: 0.65rem;
  padding: 0.08rem 0.35rem;
  margin-left: 0.4rem;
  border: 1px solid rgba(184, 59, 59, 0.4);
  color: var(--accent-seal, #b83b3b);
  border-radius: 2px;
  background: rgba(184, 59, 59, 0.06);
  font-family: var(--font-serif, "Noto Serif SC", serif);
  line-height: 1.2;
}

/* Guestbook character counter & hints (Artalk inspired) */
.guestbook-hint-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.45rem;
  padding: 0 0.25rem;
  font-size: 0.75rem;
}

.guestbook-tip {
  color: var(--text-muted, #8c8882);
}

.char-count-hint {
  font-family: var(--font-mono, monospace);
  color: var(--text-muted, #8c8882);
  transition: color 0.2s ease;
}

.echo-body {
  margin: 0;
  color: var(--text-secondary, #524f4a);
  line-height: 1.6;
  font-size: 0.85rem;
}

/* 3. 天时心境胶囊 (Hero Chrono Capsule) */
.hero-status-pill {
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.hero-status-pill:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.chrono-time-badge {
  font-family: var(--font-mono, monospace);
  color: var(--accent-seal, #b83b3b);
  font-weight: 600;
  margin-right: 0.25rem;
}

/* 4. 造物高防状态微标 */
.status-badge.edgeone {
  background: rgba(30, 114, 255, 0.08);
  color: #1e72ff;
  border: 1px solid rgba(30, 114, 255, 0.2);
}

.status-badge.edgeone .mini-dot {
  background: #1e72ff;
}

/* ==========================================================================
   智境 2.0 体验升华样式 (Reader Progress, Dark Ink Mode, Back to Top, Postlude)
   ========================================================================== */

/* 阅读进度条 */
.reading-progress-track {
  width: 100%;
  height: 2.5px;
  background: rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
  z-index: 10;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--brand-seal, #b83b3b);
  transition: width 0.08s linear;
}

/* 暮墨夜泊 · 护眼和纸暗色模式 (Night Ink Mode) */
#reader-drawer.ink-dark-mode {
  background: #171716 !important;
  color: #d6d2c4 !important;
}

#reader-drawer.ink-dark-mode .drawer-toolbar {
  background: #1e1e1c !important;
  border-bottom: 1px solid #2d2d29 !important;
}

#reader-drawer.ink-dark-mode .drawer-title {
  color: #ede9df !important;
}

#reader-drawer.ink-dark-mode .drawer-summary {
  background: #1c1c1a !important;
  color: #aaa597 !important;
  border-left-color: #b83b3b !important;
}

#reader-drawer.ink-dark-mode .markdown-rendered-content {
  color: #cdc9be !important;
}

#reader-drawer.ink-dark-mode .markdown-rendered-content h1,
#reader-drawer.ink-dark-mode .markdown-rendered-content h2,
#reader-drawer.ink-dark-mode .markdown-rendered-content h3 {
  color: #ede9df !important;
  border-bottom-color: #2d2d29 !important;
}

#reader-drawer.ink-dark-mode .markdown-rendered-content blockquote {
  background: #1c1c1a !important;
  border-left-color: #b83b3b !important;
  color: #b5b0a3 !important;
}

#reader-drawer.ink-dark-mode .markdown-rendered-content code {
  background: #242422 !important;
  color: #e8a5a5 !important;
  border-color: #333330 !important;
}

#reader-drawer.ink-dark-mode .markdown-rendered-content pre {
  background: #141413 !important;
  border: 1px solid #2d2d29 !important;
}

#reader-drawer.ink-dark-mode .markdown-rendered-content pre code {
  background: transparent !important;
  color: #cfcbbe !important;
}

#reader-drawer.ink-dark-mode .ai-insight-card {
  background: #1d1c1a !important;
  border-color: #3a3630 !important;
}

#reader-drawer.ink-dark-mode .ai-insight-title {
  color: #e8a5a5 !important;
}

#reader-drawer.ink-dark-mode .ai-insight-list li {
  color: #b5b0a3 !important;
}

#reader-drawer.ink-dark-mode .ai-insight-list strong {
  color: #ede9df !important;
}

#reader-drawer.ink-dark-mode .ai-density-pill {
  background: #272522 !important;
  color: #d6d2c4 !important;
  border-color: #3a3630 !important;
}

#reader-drawer.ink-dark-mode .reader-postlude {
  border-top-color: #2d2d29 !important;
}

#reader-drawer.ink-dark-mode .postlude-title {
  color: #ede9df !important;
}

#reader-drawer.ink-dark-mode .postlude-text {
  color: #8c887d !important;
}

#reader-drawer.ink-dark-mode .pill-action-btn {
  background: #1e1e1c !important;
  border-color: #333330 !important;
  color: #cdc9be !important;
}

#reader-drawer.ink-dark-mode .pill-action-btn:hover {
  border-color: #e8a5a5 !important;
  color: #e8a5a5 !important;
}

#reader-drawer.ink-dark-mode .font-zoom-ctrl button,
#reader-drawer.ink-dark-mode .icon-btn {
  color: #aaa597 !important;
}

#reader-drawer.ink-dark-mode .icon-btn:hover,
#reader-drawer.ink-dark-mode .font-zoom-ctrl button:hover {
  color: #ede9df !important;
  background: #252522 !important;
}

/* 文末落款卡片 */
.reader-postlude {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px dashed var(--border-line);
}

.postlude-meta-wrap {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-bottom: 1.5rem;
}

.postlude-seal {
  flex-shrink: 0;
}

.postlude-seal-mark {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border: 1.5px solid var(--brand-seal);
  color: var(--brand-seal);
  font-family: var(--font-serif);
  font-size: 0.76rem;
  font-weight: 700;
  border-radius: 4px;
  background: var(--brand-seal-bg);
  box-shadow: 0 1px 3px rgba(184, 59, 59, 0.08);
}

.postlude-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-title);
  margin: 0 0 0.25rem;
}

.postlude-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.postlude-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pill-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  font-size: 0.82rem;
  border: 1px solid var(--border-line);
  border-radius: 9999px;
  background: var(--bg-card);
  color: var(--text-body);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.pill-action-btn:hover {
  border-color: var(--text-title);
  color: var(--brand-seal);
  transform: translateY(-1px);
}

/* 返回顶部微按钮 */
.back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-body, #fcfbf9);
  border: 1px solid var(--border-line);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  color: var(--text-body);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  z-index: 90;
}

.back-to-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  border-color: var(--brand-seal);
  color: var(--brand-seal);
}

/* 时间轴微动效 */
.tl-dot.highlight {
  background: var(--brand-seal) !important;
  box-shadow: 0 0 0 4px rgba(184, 59, 59, 0.16) !important;
}

.tl-badge.pulse {
  background: rgba(184, 59, 59, 0.08) !important;
  color: var(--brand-seal) !important;
  border: 1px solid rgba(184, 59, 59, 0.2) !important;
}

/* 留言卡片与回笔更细腻样式 */
.msg-echo-box {
  background: #fbf7f4 !important;
  border-left: 3px solid var(--brand-seal, #b83b3b) !important;
  border-radius: 4px;
}

/* ==========================================================================
   全站移动端极致自适应适配 (Mobile Responsive Craft Optimization)
   针对 320px ~ 768px 移动设备全面排版优化 · 无水平滚动 · 原生触感
   ========================================================================== */

@media (max-width: 768px) {
  /* 导航栏适配 */
  .nav-dock-container {
    top: 0.5rem;
    padding: 0 0.5rem;
  }
  .nav-dock {
    gap: 0.5rem;
    padding: 0.35rem 0.7rem;
    max-width: 100%;
  }
  .brand-sub, .brand-sep {
    display: none;
  }
  .nav-links {
    gap: 0.25rem;
  }
  .nav-item {
    font-size: 0.82rem;
    padding: 0.25rem 0.5rem;
  }
  .nav-item span.nav-num {
    display: none;
  }
  .key-shortcut {
    display: none;
  }
  
  /* 页面容器 */
  .page-container {
    padding: 5.5rem 1.25rem 3.5rem;
  }
  
  /* 标题与简介 */
  .hero-title {
    font-size: 1.65rem;
    line-height: 1.35;
  }
  .hero-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  /* 文章行项 */
  .essay-row-item {
    padding: 0.9rem 0.5rem;
  }
}

@media (max-width: 640px) {
  /* 1. 移动端悬浮导航胶囊 */
  .nav-dock-container {
    top: 0.4rem;
    padding: 0 0.5rem;
    width: 100%;
  }

  .nav-dock {
    width: 100%;
    max-width: calc(100vw - 1rem);
    gap: 0.3rem;
    padding: 0.35rem 0.6rem;
    justify-content: space-between;
  }

  .nav-brand {
    flex-shrink: 0;
  }

  .brand-serif {
    font-size: 1.05rem;
  }

  .brand-sub, .brand-sep {
    display: none;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 1;
    max-width: calc(100vw - 130px);
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-item {
    font-size: 0.78rem;
    padding: 0.25rem 0.4rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .nav-item .nav-num {
    display: none;
  }

  .nav-actions {
    flex-shrink: 0;
    padding-left: 0.25rem;
    gap: 0.1rem;
    border-left: 1px solid var(--border-line);
  }

  .icon-btn {
    padding: 0.25rem 0.35rem;
  }

  .key-shortcut {
    display: none;
  }

  /* 2. 移动端页面容器与 Hero 首屏 */
  .page-container {
    padding: 4.5rem 1rem 3rem;
  }

  .hero-section {
    padding: 0.85rem 0 2rem;
  }

  .hero-status-pill {
    font-size: 0.76rem;
    padding: 0.25rem 0.6rem;
    max-width: 100%;
    line-height: 1.4;
    white-space: normal;
    word-break: break-word;
    margin-bottom: 1.15rem;
  }

  .hero-title {
    font-size: 1.45rem !important;
    line-height: 1.35 !important;
    letter-spacing: -0.01em;
    margin-bottom: 0.85rem;
  }

  .hero-bio {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
  }

  .hero-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  .seal-stamp {
    width: 52px;
    height: 52px;
  }

  .seal-inner {
    font-size: 0.66rem;
  }

  .hero-subnote {
    font-size: 0.76rem;
    padding: 0.35rem 0.75rem;
    max-width: 100%;
    line-height: 1.4;
  }

  /* 3. Section 01: 文墨沉淀列表重构为移动友好版式 */
  .content-section {
    margin-bottom: 2.75rem;
  }

  .section-header-flex {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
  }

  .sec-title-wrap {
    gap: 0.5rem;
  }

  .sec-title {
    font-size: 1.25rem;
  }

  .category-tabs {
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding-bottom: 0.25rem;
  }

  .category-tabs::-webkit-scrollbar {
    display: none;
  }

  .cat-tab {
    flex-shrink: 0;
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
  }

  .featured-essay-card {
    padding: 1.15rem;
    border-radius: 8px;
    margin-bottom: 1.25rem;
  }

  .featured-title {
    font-size: 1.18rem;
    line-height: 1.4;
  }

  .featured-summary {
    font-size: 0.86rem;
    line-height: 1.6;
    -webkit-line-clamp: 3;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* 文章行在手机端改为上下排版，标题在上，元信息在下，杜绝文本挤压 */
  .essay-row-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.45rem;
    padding: 0.85rem 0.5rem;
  }

  .essay-row-left {
    width: 100%;
  }

  .essay-title-col {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .essay-row-right {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    width: 100%;
    justify-content: flex-start;
  }

  .essay-date-col {
    font-size: 0.76rem;
    margin-right: 0.25rem;
  }

  .essay-cat-pill, .essay-readtime-pill {
    font-size: 0.72rem;
    padding: 0.15rem 0.45rem;
  }

  .essay-arrow-icon {
    margin-left: auto;
    width: 1rem;
    height: 1rem;
  }

  /* 4. Section 02: 灵感微语 */
  .moments-timeline {
    padding-left: 1rem;
  }

  .moment-entry {
    padding: 0.95rem 1rem;
    border-radius: 8px;
  }

  .moment-text {
    font-size: 0.88rem;
    line-height: 1.65;
  }

  /* 5. Section 03: 运行造物矩阵 (单列全宽) */
  .artifacts-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  .artifact-card {
    padding: 1.2rem;
    border-radius: 8px;
  }

  .art-title {
    font-size: 1.05rem;
  }

  .art-desc {
    font-size: 0.85rem;
    line-height: 1.6;
  }

  /* 6. Section 04: 折腾足迹 */
  .timeline-stats-bar {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    padding: 0.85rem;
    border-radius: 8px;
  }

  .tstat-val {
    font-size: 1.15rem;
  }

  .tstat-lbl {
    font-size: 0.72rem;
  }

  .timeline-stream {
    padding-left: 0;
  }

  .tl-card {
    padding: 0.95rem 1rem;
    border-radius: 8px;
  }

  .tl-title {
    font-size: 0.95rem;
    line-height: 1.45;
  }

  .tl-desc {
    font-size: 0.84rem;
    line-height: 1.6;
  }

  /* 7. Section 05: 留言板表单竖直排版 */
  .guestbook-form {
    padding: 1rem;
    border-radius: 8px;
  }

  .form-inputs-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.65rem !important;
  }

  .input-author {
    width: 100% !important;
  }

  .input-content {
    width: 100% !important;
    min-width: unset !important;
  }

  #btn-submit-msg {
    width: 100% !important;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }

  .message-card {
    padding: 0.95rem 1rem;
    border-radius: 8px;
  }

  .msg-body {
    font-size: 0.9rem;
  }

  .msg-echo-box {
    padding: 0.75rem;
    margin-top: 0.6rem;
  }

  .echo-body {
    font-size: 0.84rem;
    line-height: 1.6;
  }

  /* 8. 沉浸式阅读器抽屉全屏移动化 */
  .drawer-overlay {
    padding: 0 !important;
  }

  .reader-drawer {
    width: 100vw !important;
    max-width: 100vw !important;
    height: 100vh !important;
    border-radius: 0 !important;
  }

  .drawer-toolbar {
    padding: 0.65rem 0.85rem !important;
  }

  .drawer-left {
    gap: 0.4rem !important;
  }

  .drawer-left .drawer-date {
    display: none !important;
  }

  .drawer-cat-badge {
    font-size: 0.72rem !important;
    padding: 0.15rem 0.45rem !important;
  }

  .drawer-read-time {
    font-size: 0.72rem !important;
  }

  .font-zoom-ctrl {
    display: none !important;
  }

  .drawer-content-scroll {
    padding: 1.25rem 1rem 4rem !important;
  }

  .drawer-title {
    font-size: 1.35rem !important;
    line-height: 1.35 !important;
    margin-bottom: 0.75rem !important;
  }

  .drawer-summary {
    font-size: 0.85rem !important;
    padding: 0.75rem 0.85rem !important;
    margin-bottom: 1.25rem !important;
  }

  .ai-insight-card {
    padding: 0.85rem 1rem !important;
    margin: 1rem 0 1.5rem !important;
  }

  .ai-insight-badge {
    font-size: 0.82rem !important;
  }

  .ai-insight-list li {
    font-size: 0.82rem !important;
    line-height: 1.6 !important;
  }

  .reader-postlude {
    margin-top: 2rem !important;
    padding-top: 1.5rem !important;
  }

  .postlude-meta-wrap {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.4rem !important;
  }

  .postlude-actions {
    width: 100% !important;
    gap: 0.5rem !important;
  }

  .pill-action-btn {
    flex: 1 !important;
    justify-content: center !important;
    padding: 0.45rem 0.6rem !important;
    font-size: 0.76rem !important;
  }

  /* 9. 弹窗与返回顶部 */
  .page-footer {
    padding: 2rem 0 !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.75rem !important;
  }

  .back-to-top-btn {
    bottom: 1.25rem !important;
    right: 1.25rem !important;
    width: 38px !important;
    height: 38px !important;
  }

  .search-modal-box {
    width: calc(100vw - 1.5rem) !important;
    margin: 0.75rem !important;
    max-height: 80vh !important;
    border-radius: 10px !important;
  }

  .admin-modal-box {
    width: 100vw !important;
    height: 100vh !important;
    max-height: 100vh !important;
    border-radius: 0 !important;
    padding: 1rem !important;
  }

  .studio-tabs {
    overflow-x: auto !important;
    scrollbar-width: none !important;
    -webkit-overflow-scrolling: touch !important;
    flex-wrap: nowrap !important;
    padding-bottom: 0.25rem !important;
  }

  .studio-tabs::-webkit-scrollbar {
    display: none !important;
  }

  .studio-tab {
    flex-shrink: 0 !important;
    font-size: 0.78rem !important;
    padding: 0.35rem 0.65rem !important;
  }
}

/* ==========================================================================
   移动端极致体验修补 (Mobile Refinement Patch v20261102j)
   ========================================================================== */
html, body {
  overflow-x: hidden !important;
  width: 100% !important;
  -webkit-text-size-adjust: 100%;
}

.essay-row-main {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  flex: 1;
}

.essay-row-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.essay-date-col-mobile {
  display: none;
}

@media (max-width: 640px) {
  /* 文章排版重塑：手机端标题在上，元信息与时间在下一行 */
  .essay-row-item {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.45rem !important;
    padding: 0.85rem 0.25rem !important;
  }

  .essay-row-main {
    width: 100% !important;
    display: block !important;
  }

  .essay-row-main .essay-date-col {
    display: none !important;
  }

  .essay-title-col {
    font-size: 0.98rem !important;
    font-weight: 600 !important;
    line-height: 1.45 !important;
    display: block !important;
    color: var(--text-main) !important;
  }

  .essay-row-meta {
    width: 100% !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.45rem !important;
  }

  .essay-date-col-mobile {
    display: inline-block !important;
    font-family: var(--font-mono) !important;
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
    margin-right: 0.25rem !important;
  }

  .essay-arrow-icon {
    margin-left: auto !important;
  }

  /* 灵感微语手机端去轴线，转为极简卡片流 */
  .moments-timeline {
    padding-left: 0 !important;
  }
  .moments-timeline::before {
    display: none !important;
  }
  .moment-dot {
    display: none !important;
  }
  .moment-entry {
    margin-left: 0 !important;
    padding: 0.95rem 1rem !important;
  }

  /* 折腾足迹紧凑化 */
  .timeline-stream {
    padding-left: 0 !important;
  }
  .timeline-entry {
    gap: 0.75rem !important;
  }
  .tl-marker {
    width: 16px !important;
    padding-top: 1.15rem !important;
  }
  .tl-card {
    flex: 1 !important;
    width: calc(100% - 24px) !important;
  }
}

/* ==========================================================================
   纸境工坊极致升华系统 (Atelier Master Craft Edition v20261102k)
   涵盖：三重纸境心境主题、智能代码块、导读目录、墨句摘录卡片、留墨动态微交互
   ========================================================================== */

/* 1. 三重纸境心境主题系统 (Tri-Atmosphere Themes) */
[data-theme="dark"] {
  --bg-paper: #131416;
  --bg-card: #1a1b1e;
  --bg-subtle: #222428;
  --bg-hover: #2c2e33;
  
  --border-line: rgba(255, 255, 255, 0.12);
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-focus: #f4f3f0;

  --text-title: #f4f3f0;
  --text-body: #d2d0c8;
  --text-muted: #8c8a84;
  --text-faint: #5e5d59;

  --brand-seal: #f87171;
  --brand-seal-bg: rgba(248, 113, 113, 0.12);
  --brand-emerald: #34d399;
  --brand-emerald-bg: rgba(52, 211, 153, 0.12);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.3), 0 10px 24px -8px rgba(0, 0, 0, 0.5);
  --shadow-modal: 0 20px 40px -10px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .paper-grain {
  opacity: 0.025;
}

[data-theme="dark"] .nav-dock {
  background: rgba(26, 27, 30, 0.88);
  backdrop-filter: blur(12px);
}

[data-theme="sepia"] {
  --bg-paper: #f4ede1;
  --bg-card: #faf5eb;
  --bg-subtle: #eae1cf;
  --bg-hover: #e0d5c0;
  
  --border-line: rgba(175, 156, 130, 0.6);
  --border-subtle: rgba(175, 156, 130, 0.35);
  --border-focus: #3a2d1d;

  --text-title: #2a2014;
  --text-body: #493c2e;
  --text-muted: #806f5c;
  --text-faint: #a69480;

  --brand-seal: #a82323;
  --brand-seal-bg: rgba(168, 35, 35, 0.08);
  --brand-emerald: #1b7a53;
  --brand-emerald-bg: rgba(27, 122, 83, 0.1);

  --shadow-sm: 0 1px 2px rgba(60, 40, 20, 0.06);
  --shadow-card: 0 2px 4px rgba(60, 40, 20, 0.04), 0 10px 24px -8px rgba(60, 40, 20, 0.08);
  --shadow-modal: 0 20px 40px -10px rgba(60, 40, 20, 0.18), 0 1px 3px rgba(60, 40, 20, 0.08);
}

[data-theme="sepia"] .nav-dock {
  background: rgba(250, 245, 235, 0.9);
  backdrop-filter: blur(12px);
}

/* 2. 智能代码块系统 (Smart Code Blocks with macOS Dots & 48px Touch) */
.code-block-wrapper {
  margin: 1.5rem 0;
  border: 1px solid var(--border-line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  text-indent: 0 !important;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.95rem;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono, monospace);
  font-size: 0.76rem;
  user-select: none;
  gap: 0.75rem;
}

/* macOS 三色小圆点 */
.code-mac-dots {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.mac-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.mac-dot:hover {
  opacity: 1;
}

.mac-dot-close {
  background: #ff5f56;
  box-shadow: 0 0 2px rgba(255, 95, 86, 0.4);
}

.mac-dot-min {
  background: #ffbd2e;
  box-shadow: 0 0 2px rgba(255, 189, 46, 0.4);
}

.mac-dot-max {
  background: #27c93f;
  box-shadow: 0 0 2px rgba(39, 201, 63, 0.4);
}

.code-lang-tag {
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  background: rgba(128, 128, 128, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

/* 复制代码按钮 - 充足触控区域与平滑微动效 */
.code-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 5px;
  padding: 0.28rem 0.65rem;
  min-height: 32px;
  font-family: var(--font-mono, monospace);
  font-size: 0.74rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.code-copy-btn:hover {
  background: var(--bg-hover);
  color: var(--text-title);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.code-copy-btn.copied {
  color: #10b981 !important;
  border-color: #10b981 !important;
  background: rgba(16, 185, 129, 0.08) !important;
}

.code-block-wrapper pre,
.code-block-wrapper pre.code-content {
  margin: 0 !important;
  padding: 1.15rem 1.25rem !important;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch !important;
  white-space: pre !important;
  word-wrap: normal !important;
  word-break: normal !important;
  text-indent: 0 !important;
  border: none !important;
  border-radius: 0 !important;
  background: transparent !important;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Menlo, Consolas, monospace !important;
  font-size: 0.85rem !important;
  line-height: 1.68 !important;
  tab-size: 2;
}

.code-block-wrapper code {
  font-family: inherit !important;
  font-size: inherit !important;
  line-height: inherit !important;
  text-indent: 0 !important;
  white-space: pre !important;
  color: var(--text-title) !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
}

/* 行内代码标签 */
.reader-inline-code,
#reader-content :not(pre) > code {
  font-family: var(--font-mono, monospace) !important;
  font-size: 0.85em !important;
  padding: 0.15rem 0.4rem !important;
  background: rgba(128, 128, 128, 0.12) !important;
  color: var(--brand-seal, #b83b3b) !important;
  border-radius: 4px !important;
  text-indent: 0 !important;
  display: inline !important;
}

/* 3. 长文导读目录 (Table of Contents in Reader) */
.reader-toc-container {
  margin: 1.15rem 0 1.5rem;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background: var(--bg-subtle);
  padding: 0.75rem 1rem;
}

.reader-toc-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.reader-toc-list {
  list-style: none;
  margin: 0.6rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.reader-toc-item {
  font-size: 0.85rem;
  color: var(--text-body);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.reader-toc-item:hover {
  background: var(--bg-hover);
  color: var(--text-title);
  padding-left: 0.75rem;
}

.reader-toc-item.level-3 {
  padding-left: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 4. 墨句摘录浮标与高清卡片 (Quote Selection & Card Modal) */
.selection-quote-pill {
  position: absolute;
  z-index: 1000;
  display: none;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  background: var(--text-title);
  color: var(--bg-paper);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  box-shadow: var(--shadow-modal);
  cursor: pointer;
  transform: translate(-50%, -100%);
  margin-top: -10px;
  transition: opacity 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.selection-quote-pill:hover {
  transform: translate(-50%, -104%);
}

.selection-quote-pill .svg-icon {
  width: 13px;
  height: 13px;
}

.quote-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  z-index: 1050;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.quote-modal-card {
  width: 100%;
  max-width: 500px;
  background: var(--bg-paper);
  border: 1px solid var(--border-line);
  border-radius: 12px;
  box-shadow: var(--shadow-modal);
  padding: 1.75rem;
  position: relative;
}

.modal-close-btn {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 50%;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}
.modal-close-btn:hover {
  background: var(--border-line);
  color: var(--text-title);
  transform: scale(1.08);
}

.quote-card-preview {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.75rem 1.5rem;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.quote-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border-line);
  padding-bottom: 0.65rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.quote-card-body {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-title);
  font-style: italic;
  margin-bottom: 1.5rem;
  position: relative;
  word-break: break-word;
}

.quote-card-body::before {
  content: '“';
  font-size: 2rem;
  line-height: 0;
  vertical-align: -0.4rem;
  margin-right: 0.2rem;
  color: var(--text-muted);
}

.quote-card-body::after {
  content: '”';
  font-size: 2rem;
  line-height: 0;
  vertical-align: -0.4rem;
  margin-left: 0.2rem;
  color: var(--text-muted);
}

.quote-card-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-top: 1px dashed var(--border-line);
  padding-top: 0.85rem;
}

.quote-card-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.quote-source-title {
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 0.15rem;
}

.quote-source-author {
  font-size: 0.74rem;
  font-family: var(--font-mono);
}

.quote-card-seal {
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--brand-seal);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  color: var(--brand-seal);
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1.1;
  background: var(--brand-seal-bg);
  transform: rotate(-3deg);
}

.quote-modal-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.35rem;
}

.quote-modal-actions button {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

/* 5. 留言板实时字数与时辰感知 */
.guestbook-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  padding: 0 0.25rem;
}

.char-counter {
  margin-left: auto;
}

/* 移动端细化 */
@media (max-width: 640px) {
  .quote-modal-card {
    padding: 1.25rem;
    max-height: 90vh;
    overflow-y: auto;
  }
  .quote-modal-actions {
    flex-direction: column;
  }
}

/* Code block text contrast & Quote modal z-index polish */
.code-block-wrapper code {
  color: var(--text-title) !important;
}
.quote-modal-overlay {
  z-index: 2500 !important;
}

/* ==========================================================================
   2026.11.03 REFINEMENTS: LEFT TOC, MOBILE ADAPTATION & ADMIN REPLIES
   ========================================================================== */

/* 1. 导读脉络目录极致左对齐与纸境印记 (TOC Left Alignment) */
.markdown-rendered-content .reader-toc-container {
  margin: 1.25rem 0 1.75rem !important;
  border: 1px solid var(--border-line) !important;
  border-left: 3px solid var(--brand-seal, #b83b3b) !important;
  border-radius: 4px !important;
  background: var(--bg-card) !important;
  padding: 0.85rem 1.15rem !important;
  box-shadow: var(--shadow-sm) !important;
}

.markdown-rendered-content .reader-toc-title {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  font-size: 0.86rem !important;
  font-weight: 600 !important;
  color: var(--text-title) !important;
  cursor: pointer !important;
  user-select: none !important;
  padding-bottom: 0.45rem !important;
  border-bottom: 1px solid var(--border-subtle) !important;
  transition: color var(--transition-fast) !important;
}

.markdown-rendered-content .reader-toc-title:hover {
  color: var(--brand-seal, #b83b3b) !important;
}

.markdown-rendered-content .reader-toc-list {
  list-style: none !important;
  margin: 0.55rem 0 0 !important;
  padding: 0 !important;
  padding-left: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.35rem !important;
}

.markdown-rendered-content .reader-toc-item {
  font-size: 0.86rem !important;
  color: var(--text-body) !important;
  cursor: pointer !important;
  padding: 0.35rem 0.25rem !important;
  padding-left: 0.15rem !important;
  border-radius: 4px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  text-align: left !important;
  gap: 0.5rem !important;
  transition: all 0.15s ease !important;
}

.markdown-rendered-content .reader-toc-item:hover {
  background: var(--bg-hover) !important;
  color: var(--text-title) !important;
  padding-left: 0.45rem !important;
}

.markdown-rendered-content .reader-toc-item.level-top {
  padding-left: 0.15rem !important;
  font-weight: 500 !important;
}

.markdown-rendered-content .reader-toc-item.level-sub {
  padding-left: 0.95rem !important;
  font-size: 0.82rem !important;
  color: var(--text-muted) !important;
}

.markdown-rendered-content .reader-toc-item .toc-bullet {
  color: var(--brand-seal, #b83b3b) !important;
  font-weight: bold !important;
  font-size: 0.9rem !important;
  line-height: 1 !important;
  flex-shrink: 0 !important;
}

.markdown-rendered-content .reader-toc-item .toc-text {
  flex: 1 !important;
  text-align: left !important;
  line-height: 1.4 !important;
}

/* 2. 桌面大屏左侧常驻脉络导读轨 (Desktop Left Sticky Sidebar TOC) */
.reader-layout-wrap {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 2.2rem;
  max-width: 980px;
  margin: 0 auto;
  position: relative;
}

.reader-desktop-sidebar {
  display: none;
  width: 210px;
  flex-shrink: 0;
  position: sticky;
  top: 1.5rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  scrollbar-width: thin;
}

.desktop-sidebar-inner {
  padding: 0.85rem 0.75rem;
  border-left: 2px solid var(--border-line);
  background: transparent;
}

.desktop-toc-header {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-title);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.desktop-toc-list {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.35rem !important;
}

.desktop-toc-list .reader-toc-item {
  font-size: 0.82rem !important;
  color: var(--text-muted) !important;
  padding: 0.35rem 0.45rem !important;
  border-radius: 4px !important;
  cursor: pointer !important;
  line-height: 1.4 !important;
  display: flex !important;
  align-items: flex-start !important;
  text-align: left !important;
  justify-content: flex-start !important;
  gap: 0.45rem !important;
  transition: all 0.15s ease !important;
}

.desktop-toc-list .reader-toc-item:hover {
  color: var(--text-title) !important;
  background: var(--bg-hover) !important;
}

.desktop-toc-list .reader-toc-item.level-sub {
  padding-left: 0.85rem !important;
  font-size: 0.78rem !important;
}

.desktop-toc-list .reader-toc-item .toc-bullet {
  color: var(--brand-seal, #b83b3b) !important;
  font-size: 0.85rem !important;
  line-height: 1.2 !important;
  flex-shrink: 0 !important;
}

.desktop-toc-list .reader-toc-item .toc-text {
  flex: 1 !important;
  line-height: 1.35 !important;
}

@media (min-width: 1100px) {
  .reader-drawer {
    max-width: 980px !important;
  }
  .reader-desktop-sidebar {
    display: block !important;
  }
}

/* 3. 移动端全方位专属适配 (Comprehensive Mobile Polishing) */
@media (max-width: 640px) {
  html, body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
  }

  /* 顶部导航胶囊在无控制台按钮后更通透 */
  .nav-dock-container {
    top: 0.4rem !important;
    padding: 0 0.5rem !important;
    width: 100% !important;
  }

  .nav-dock {
    width: 100% !important;
    max-width: calc(100vw - 1rem) !important;
    padding: 0.35rem 0.65rem !important;
    gap: 0.4rem !important;
  }

  /* 沉浸式阅读器抽屉手机端 */
  .reader-drawer {
    width: 100% !important;
    max-width: 100vw !important;
  }

  .drawer-toolbar {
    padding: 0.65rem 0.85rem !important;
    gap: 0.5rem !important;
  }

  .drawer-date {
    display: none !important;
  }

  .font-zoom-ctrl {
    display: none !important;
  }

  .drawer-content-scroll {
    padding: 1.15rem 1rem 3.5rem !important;
  }

  .drawer-title {
    font-size: 1.5rem !important;
    line-height: 1.35 !important;
    margin-bottom: 0.75rem !important;
  }

  .drawer-summary {
    font-size: 0.88rem !important;
    line-height: 1.6 !important;
  }

  .markdown-rendered-content p {
    font-size: 0.98rem !important;
    line-height: 1.8 !important;
    margin-bottom: 1.15rem !important;
  }

  .markdown-rendered-content h2 {
    font-size: 1.3rem !important;
    margin-top: 1.6rem !important;
    margin-bottom: 0.7rem !important;
  }

  .markdown-rendered-content h3 {
    font-size: 1.1rem !important;
    margin-top: 1.35rem !important;
    margin-bottom: 0.55rem !important;
  }

  .code-block-wrapper {
    margin: 1rem 0 !important;
  }

  .code-block-wrapper pre {
    padding: 0.75rem !important;
    font-size: 0.78rem !important;
  }

  /* 留墨区手机端 */
  .guestbook-container {
    gap: 1.15rem !important;
  }

  .message-card {
    padding: 0.85rem 1rem !important;
  }

  .msg-echo-box {
    margin-top: 0.6rem !important;
    padding: 0.65rem 0.85rem !important;
  }
}

/* ==========================================================================
   2026.11.03 FIX: REMOVE ARTICLE-EMBEDDED TOC, KEEP UNIFIED LEFT RAIL
   ========================================================================== */

/* 彻底隐藏并移除正文内部生成的目录卡片 */
.reader-toc-container,
.markdown-rendered-content .reader-toc-container,
#reader-content .reader-toc-container {
  display: none !important;
  visibility: hidden !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  border: none !important;
}

/* 统一导读脉络轨 (桌面常驻左侧吸顶，移动端置于文首纯粹左对齐) */
.reader-desktop-sidebar {
  display: block !important;
}

@media (min-width: 960px) {
  .reader-layout-wrap {
    display: flex !important;
    justify-content: center !important;
    align-items: flex-start !important;
    gap: 2.2rem !important;
    max-width: 980px !important;
    margin: 0 auto !important;
    position: relative !important;
  }

  .reader-desktop-sidebar {
    width: 210px !important;
    flex-shrink: 0 !important;
    position: sticky !important;
    top: 1.5rem !important;
    max-height: calc(100vh - 8rem) !important;
    overflow-y: auto !important;
    scrollbar-width: thin !important;
  }

  .desktop-sidebar-inner {
    padding: 0.85rem 0.75rem !important;
    border-left: 2px solid var(--border-line) !important;
    border-top: none !important;
    border-right: none !important;
    border-bottom: none !important;
    background: transparent !important;
  }
}

@media (max-width: 959px) {
  .reader-layout-wrap {
    display: flex !important;
    flex-direction: column !important;
    gap: 0.75rem !important;
    width: 100% !important;
  }

  .reader-desktop-sidebar {
    width: 100% !important;
    position: static !important;
    max-height: none !important;
    margin-bottom: 0.75rem !important;
  }

  .desktop-sidebar-inner {
    border: 1px solid var(--border-line) !important;
    border-left: 3px solid var(--brand-seal, #b83b3b) !important;
    border-radius: 4px !important;
    padding: 0.75rem 1rem !important;
    background: var(--bg-card) !important;
  }
}

/* Mobile AI Insight chip alignment fix */
@media (max-width: 640px) {
  .ai-insight-meta {
    flex-wrap: wrap !important;
    gap: 0.35rem !important;
    justify-content: flex-start !important;
  }
  .ai-chip {
    white-space: nowrap !important;
    font-size: 0.72rem !important;
  }
}

/* ==========================================================================
   中文正统排版：段间距、精细缩进与大厂级悬挂列表 (Typography & Hanging Lists)
   ========================================================================== */
.featured-summary,
.art-desc {
  text-indent: 2em;
  text-align: justify;
}

/* 正文段落：优雅段间距与两端对齐 */
#reader-content p.reader-para,
#reader-content p {
  text-indent: 2em;
  text-align: justify;
  margin-bottom: 1.35rem;
  line-height: 1.88;
}

/* 严格排除一切不需要段首缩进的元素 */
#reader-content pre,
#reader-content code,
#reader-content ul,
#reader-content ol,
#reader-content li,
#reader-content blockquote,
#reader-content h1,
#reader-content h2,
#reader-content h3,
#reader-content h4,
#reader-content hr,
.ai-insight-card,
.ai-insight-card p,
.ai-insight-card li,
.ai-insight-card ul,
.code-block-wrapper,
.code-block-wrapper * {
  text-indent: 0 !important;
}

/* 有序列表：经典悬挂对齐（Hanging Indent），彻底消灭数字被推跑、第二行折回顶格的车祸 */
#reader-content ol,
.reader-ordered-list {
  list-style: none !important;
  counter-reset: reader-ol-counter;
  padding-left: 0 !important;
  margin: 1.25rem 0 1.5rem !important;
  text-indent: 0 !important;
}

#reader-content ol > li,
.reader-ol-item {
  counter-increment: reader-ol-counter;
  position: relative !important;
  padding-left: 2.2rem !important;
  margin-bottom: 0.85rem !important;
  line-height: 1.85 !important;
  color: var(--text-body);
  text-align: justify;
  text-indent: 0 !important;
}

#reader-content ol > li::before,
.reader-ol-item::before {
  content: counter(reader-ol-counter) ".";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
  color: var(--brand-seal, #b83b3b);
  font-family: var(--font-mono, monospace);
  font-size: 0.95rem;
  width: 1.8rem;
  text-align: right;
  line-height: 1.85;
}

/* 无序列表：精致朱砂印符号 */
#reader-content ul,
.reader-unordered-list {
  list-style: none !important;
  padding-left: 0 !important;
  margin: 1.2rem 0 1.5rem !important;
  text-indent: 0 !important;
}

#reader-content ul > li,
.reader-ul-item {
  position: relative !important;
  padding-left: 1.6rem !important;
  margin-bottom: 0.75rem !important;
  line-height: 1.85 !important;
  color: var(--text-body);
  text-align: justify;
  text-indent: 0 !important;
}

#reader-content ul > li::before,
.reader-ul-item::before {
  content: "✦";
  position: absolute;
  left: 0.25rem;
  top: 0;
  font-size: 0.72rem;
  color: var(--brand-seal, #b83b3b);
  line-height: 1.85;
}

/* 分割线 */
.reader-hr {
  border: none;
  border-top: 1px dashed var(--border-line);
  margin: 2rem 0;
  opacity: 0.6;
}


/* ==========================================================================
   2026.11.04 PROMOTION & INDIEWEB WEBRING (去中心化博客互联与外宣矩阵)
   ========================================================================== */
.footer-center {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0.5rem 0;
}

.webring-links {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.webring-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  padding: 0.22rem 0.65rem;
  border-radius: 4px;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.webring-pill:hover {
  color: var(--accent-seal, #b83b3b);
  border-color: var(--accent-seal, #b83b3b);
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.webring-icon {
  font-size: 0.85rem;
  line-height: 1;
}

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 4rem;
}

@media (max-width: 768px) {
  .page-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
  .footer-center {
    justify-content: flex-start;
  }
}


/* ==========================================================================
   2026.11.04 COMPREHENSIVE MOBILE ADAPTATION & TOC REFINEMENTS
   ========================================================================== */

/* 1. Desktop vs Mobile TOC Layout Rules */
@media (min-width: 960px) {
  .reader-desktop-sidebar {
    display: block !important;
    width: 210px !important;
    flex-shrink: 0 !important;
    position: sticky !important;
    top: 1.5rem !important;
  }
  .reader-mobile-toc-slot {
    display: none !important;
  }
}

@media (max-width: 959px) {
  .reader-desktop-sidebar {
    display: none !important;
  }
  .reader-mobile-toc-slot {
    display: block !important;
    margin: 1.15rem 0 1rem 0 !important;
  }
  .reader-mobile-toc-details {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-line) !important;
    border-left: 3px solid var(--accent-seal, #b83b3b) !important;
    border-radius: 4px !important;
    padding: 0.65rem 0.95rem !important;
    box-shadow: var(--shadow-sm) !important;
  }
  .reader-mobile-toc-summary {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    cursor: pointer !important;
    list-style: none !important;
    font-size: 0.88rem !important;
    font-weight: 600 !important;
    color: var(--text-title) !important;
    user-select: none !important;
  }
  .reader-mobile-toc-summary::-webkit-details-marker {
    display: none !important;
  }
  .mobile-toc-badge {
    display: flex !important;
    align-items: center !important;
    color: var(--text-title) !important;
  }
  .mobile-toc-arrow {
    font-size: 0.85rem !important;
    color: var(--text-muted) !important;
    transition: transform 0.2s ease !important;
  }
  .reader-mobile-toc-details[open] .mobile-toc-arrow {
    transform: rotate(180deg) !important;
  }
  .mobile-toc-list {
    list-style: none !important;
    padding: 0.65rem 0 0.25rem 0.5rem !important;
    margin: 0.5rem 0 0 0 !important;
    border-top: 1px dashed var(--border-subtle) !important;
  }
  .mobile-toc-list .reader-toc-item {
    padding: 0.4rem 0 !important;
    font-size: 0.85rem !important;
    color: var(--text-secondary) !important;
    display: flex !important;
    align-items: baseline !important;
    gap: 0.45rem !important;
    cursor: pointer !important;
  }
  .mobile-toc-list .reader-toc-item.level-sub {
    padding-left: 0.85rem !important;
    font-size: 0.8rem !important;
    opacity: 0.9 !important;
  }
  .mobile-toc-list .reader-toc-item:active {
    color: var(--accent-seal, #b83b3b) !important;
  }
}

/* 2. Mobile Article Header & AI Insight Card Polish */
@media (max-width: 640px) {
  .drawer-toolbar {
    padding: 0.65rem 0.85rem !important;
  }
  .drawer-cat-badge {
    font-size: 0.72rem !important;
    padding: 0.15rem 0.4rem !important;
  }
  .drawer-date, .drawer-read-time {
    font-size: 0.72rem !important;
  }
  .drawer-title {
    font-size: 1.35rem !important;
    line-height: 1.35 !important;
    margin: 0.4rem 0 0.75rem 0 !important;
    word-break: break-word !important;
  }
  .drawer-summary {
    font-size: 0.88rem !important;
    line-height: 1.65 !important;
    margin-bottom: 0.65rem !important;
  }
  .drawer-content-scroll {
    padding: 0.85rem 1rem 3.5rem !important;
  }
  
  /* AI Insight Card: Stack vertically to prevent horizontal clipping */
  .ai-insight-card {
    padding: 0.85rem 1rem !important;
    margin: 1.15rem 0 1.5rem 0 !important;
  }
  .ai-insight-header {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.5rem !important;
    margin-bottom: 0.65rem !important;
    padding-bottom: 0.5rem !important;
    border-bottom: 1px dashed var(--border-line) !important;
  }
  .ai-insight-badge {
    font-size: 0.84rem !important;
    white-space: nowrap !important;
    gap: 0.4rem !important;
  }
  .ai-insight-meta {
    width: 100% !important;
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 0.35rem !important;
    justify-content: flex-start !important;
  }
  .ai-chip {
    font-size: 0.72rem !important;
    padding: 0.15rem 0.45rem !important;
    white-space: nowrap !important;
  }
  .ai-insight-list {
    padding-left: 1rem !important;
    margin-top: 0.45rem !important;
  }
  .ai-insight-list li {
    font-size: 0.82rem !important;
    line-height: 1.6 !important;
    margin-bottom: 0.35rem !important;
  }

  /* Code Block Horizontal Scroll on Mobile */
  .code-block-wrapper pre {
    font-size: 0.76rem !important;
    padding: 0.75rem !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }
}


/* ==========================================================================
   2026.11.04 CRITICAL FIX: MOBILE CROSS-AXIS STRETCH & HORIZONTAL CONTAINMENT
   ========================================================================== */
.reader-layout-wrap {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

@media (max-width: 959px) {
  .reader-layout-wrap {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important; /* Critical: flexbox cross-axis stretch prevents max-content overflow */
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .drawer-article-body {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }
  .drawer-title,
  .drawer-summary,
  .markdown-rendered-content,
  #reader-content,
  .ai-insight-card {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
    word-break: break-word !important;
    overflow-wrap: break-word !important;
  }
}


/* ==========================================================================
   2026.11.04 LUDI DESIGN SYSTEM INSPIRATION (抖音博主 26940677440 理念落地)
   1. 费茨定律触控体验 (Fitts's Law Touch Target & Ergonomics)
   2. 别把蜘蛛网大图硬塞进小屏 (Mobile Adaptive Card De-cluttering)
   3. 场景现实主义高对比排版 (Scene Realism & High Contrast Legibility)
   4. 纸境微光骨架屏自愈体系 (Takeo Paper Shimmer Skeleton System)
   ========================================================================== */

/* --- 1. 全局触控安全区与物理触感反馈 --- */
button, 
.icon-btn, 
.cat-tab, 
.nav-item, 
.code-copy-btn, 
.btn-action,
.webring-pill,
.filter-chip {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* 消除所有移动端按钮误触与点不中问题：最小 42px 触控面 */
.icon-btn {
  min-width: 42px !important;
  min-height: 42px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  border-radius: 8px !important;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast) !important;
}

.icon-btn:active {
  transform: scale(0.92) !important;
}

/* 沉浸阅读抽屉核心关闭按钮：高可视悬浮药丸触控钮 */
#btn-close-reader {
  min-width: 42px !important;
  min-height: 42px !important;
  width: 42px !important;
  height: 42px !important;
  border-radius: 50% !important;
  background: var(--bg-hover) !important;
  border: 1px solid var(--border-line) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06) !important;
  cursor: pointer !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: var(--text-title) !important;
  margin-left: 0.35rem !important;
}

#btn-close-reader:hover {
  background: var(--border-line) !important;
  color: var(--brand-seal, #b91c1c) !important;
}

#btn-close-reader:active {
  transform: scale(0.88) !important;
}

/* 沉浸阅读辅助按钮热区保证 */
#btn-copy-article-link,
#btn-theme-reader {
  min-width: 40px !important;
  min-height: 40px !important;
  border-radius: 6px !important;
}

/* 分类标签胶囊：触感回弹与舒适手指高度 */
.cat-tab {
  min-height: 38px !important;
  padding: 0.45rem 1.05rem !important;
  font-size: 0.85rem !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  border-radius: 9999px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: all var(--transition-fast) !important;
}

.cat-tab:active {
  transform: scale(0.95) !important;
}

.cat-tab.active {
  font-weight: 600 !important;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08) !important;
}

/* 导航项微动效与触控面 */
.nav-item {
  min-height: 38px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0.35rem 0.75rem !important;
  border-radius: 9999px !important;
}

.nav-item:active {
  transform: scale(0.95) !important;
}

/* 锚点跳转平滑滚动与顶栏避让 */
#reader-content h1,
#reader-content h2,
#reader-content h3,
#reader-content h4 {
  scroll-margin-top: 72px !important;
}

/* --- 2. 纸境微光骨架屏 (Paper Shimmer Skeleton) --- */
@keyframes paperShimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton-shimmer-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
}

.skeleton-bar {
  background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-hover) 50%, var(--bg-subtle) 75%);
  background-size: 200% 100%;
  animation: paperShimmer 1.8s infinite ease-in-out;
  border-radius: 4px;
}

.skeleton-featured-box {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 8px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skeleton-pill {
  width: 60px;
  height: 22px;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-hover) 50%, var(--bg-subtle) 75%);
  background-size: 200% 100%;
  animation: paperShimmer 1.8s infinite ease-in-out;
}

.skeleton-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.skeleton-title-bar {
  height: 28px;
  width: 78%;
}

.skeleton-text-bar {
  height: 16px;
  width: 100%;
}

.skeleton-text-bar-short {
  height: 16px;
  width: 65%;
}

/* --- 3. 移动端专属自适应深度优化 (< 640px) --- */
@media (max-width: 640px) {
  /* 移动端顶栏 Dock：自适应流式排版，绝不拥挤 */
  .nav-dock-container {
    top: 0.5rem !important;
    padding: 0 0.5rem !important;
    width: 100% !important;
  }

  .nav-dock {
    width: 100% !important;
    max-width: 100% !important;
    height: 48px !important;
    padding: 0 0.75rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 0.35rem !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
  }

  .nav-brand {
    flex-shrink: 0 !important;
  }

  .brand-serif {
    font-size: 1.05rem !important;
  }

  .brand-sub {
    font-size: 0.82rem !important;
  }

  /* 导航项横向平滑滚动吸附 */
  .nav-links {
    flex: 1 !important;
    display: flex !important;
    align-items: center !important;
    gap: 0.25rem !important;
    overflow-x: auto !important;
    scrollbar-width: none !important;
    -webkit-overflow-scrolling: touch !important;
    margin: 0 0.35rem !important;
    padding: 0.15rem 0.2rem !important;
    mask-image: linear-gradient(90deg, transparent 0, black 8px, black calc(100% - 8px), transparent 100%) !important;
    -webkit-mask-image: linear-gradient(90deg, transparent 0, black 8px, black calc(100% - 8px), transparent 100%) !important;
  }

  .nav-links::-webkit-scrollbar {
    display: none !important;
  }

  .nav-item {
    font-size: 0.8rem !important;
    padding: 0.3rem 0.55rem !important;
    min-height: 36px !important;
    flex-shrink: 0 !important;
    white-space: nowrap !important;
  }

  .nav-item .nav-num {
    display: none !important;
  }

  .nav-actions {
    flex-shrink: 0 !important;
    padding-left: 0.35rem !important;
    gap: 0.2rem !important;
    border-left: 1px solid var(--border-line) !important;
  }

  .nav-actions .icon-btn {
    min-width: 38px !important;
    min-height: 38px !important;
    padding: 0.3rem !important;
  }

  /* 消除 iOS 软键盘弹出时的强制自动缩放 (iOS Safari Auto-zoom 防御) */
  input[type="text"],
  input[type="password"],
  input[type="email"],
  textarea,
  select {
    font-size: 16px !important;
  }

  /* 沉浸阅读抽屉移动端顶栏体验重铸 */
  .drawer-toolbar {
    height: 54px !important;
    padding: 0 0.85rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
  }

  .drawer-left {
    display: flex !important;
    align-items: center !important;
    gap: 0.45rem !important;
  }

  .drawer-right {
    display: flex !important;
    align-items: center !important;
    gap: 0.35rem !important;
  }

  .drawer-cat-badge {
    font-size: 0.72rem !important;
    padding: 0.2rem 0.45rem !important;
    border-radius: 4px !important;
  }

  .drawer-read-time {
    font-size: 0.72rem !important;
    color: var(--text-muted) !important;
  }

  /* 分类选项卡横向轻量滚动条 */
  .category-tabs {
    display: flex !important;
    overflow-x: auto !important;
    scrollbar-width: none !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 0.35rem !important;
    padding: 0.25rem 0.15rem !important;
  }

  .category-tabs::-webkit-scrollbar {
    display: none !important;
  }

  .cat-tab {
    flex-shrink: 0 !important;
    white-space: nowrap !important;
  }

  /* 留言板表单移动端自适应 */
  .form-inputs-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.65rem !important;
  }

  .paper-input {
    width: 100% !important;
    min-height: 44px !important;
    padding: 0.65rem 0.85rem !important;
  }

  .paper-btn.btn-primary {
    width: 100% !important;
    min-height: 44px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.45rem !important;
    font-size: 0.92rem !important;
  }

  /* 搜索弹窗全屏防溢出 */
  .search-modal-box {
    width: 95% !important;
    max-width: 95% !important;
    padding: 1.15rem !important;
  }

  .search-input-wrap {
    min-height: 46px !important;
  }

  .search-input-wrap input {
    font-size: 16px !important;
  }

  #btn-close-search {
    min-width: 38px !important;
    min-height: 38px !important;
  }
}


/* ==========================================================================
   2026.11.04 LUDI 13-RULES COMPREHENSIVE DESIGN REFACTOR
   - Video 3: 烂后台四刀救赎 (等流对齐、时间分层、语义标签、四维看板)
   - Video 9: 别再乱用下拉框 (分段控制器 Segmented Control)
   - Video 10: 大厂AI五大隐藏细节 (拼音防误发、内外圆角同心、单层纯净边框、防抖)
   - Video 11: 告别塑料感细节 (两行代码治乱抖 scrollbar-gutter: stable、视网膜细线)
   - Video 12 & 13: 弹层抽屉体系化 (Modal vs Drawer vs Toast vs Popover)
   ========================================================================== */

/* --- 1. 两行代码治乱抖 (Video 11 Detail 4) --- */
html {
  scrollbar-gutter: stable;
}

/* --- 2. 别再乱用下拉框：大厂分段单选控制器 (Video 9) --- */
.segmented-control-group {
  display: inline-flex;
  align-items: center;
  background: var(--bg-subtle, #f5f4ef);
  border: 1px solid var(--border-line, rgba(225, 221, 212, 0.85));
  border-radius: 8px; /* R_outer = 8px */
  padding: 3px;       /* padding = 3px */
  gap: 2px;
  width: 100%;
  max-width: 440px;
  box-sizing: border-box;
}

.segment-pill {
  flex: 1;
  min-height: 36px;
  border: none;
  background: transparent;
  color: var(--text-muted, #52525b);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 5px; /* R_inner = 8 - 3 = 5px (数学严谨：内外圆角同心！) */
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}

.segment-pill:hover {
  color: var(--text-title);
  background: rgba(0, 0, 0, 0.03);
}

.segment-pill.active {
  background: var(--bg-card, #ffffff);
  color: var(--text-title, #18181b);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.segment-pill:active {
  transform: scale(0.95);
}

/* --- 3. 烂后台救赎：四维指标数据看板 (Video 3 看板) --- */
.studio-metric-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 8px; /* R_outer = 8px */
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-1px);
  border-color: var(--border-focus);
}

.metric-num {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.2;
}

.metric-status-val {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: #059669;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.pulse-dot-live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #059669;
  box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.6);
  animation: pulseEmerald 2s infinite;
  display: inline-block;
}

@keyframes pulseEmerald {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.6);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(5, 150, 105, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(5, 150, 105, 0);
  }
}

.metric-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- 4. 烂后台救赎：等流对齐与语义色阶标签 (Video 3 等流、时间、标签) --- */
.studio-stream-table {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.studio-article-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.studio-article-row:hover {
  background: var(--bg-hover);
  border-color: rgba(0, 0, 0, 0.15);
}

.studio-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.studio-item-row:hover {
  background: var(--bg-hover);
  border-color: rgba(0, 0, 0, 0.15);
}

/* 语义分类彩色胶囊标签 (Video 3 标签) */
.cat-badge {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.cat-badge-tech {
  background: rgba(5, 150, 105, 0.08);
  color: #047857;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.cat-badge-design {
  background: rgba(185, 28, 28, 0.08);
  color: #b91c1c;
  border: 1px solid rgba(185, 28, 28, 0.2);
}

.cat-badge-essay {
  background: rgba(63, 63, 70, 0.08);
  color: #3f3f46;
  border: 1px solid rgba(63, 63, 70, 0.2);
}

.cat-badge-think {
  background: rgba(217, 119, 6, 0.08);
  color: #b45309;
  border: 1px solid rgba(217, 119, 6, 0.2);
}

.cat-badge-life {
  background: rgba(13, 148, 136, 0.08);
  color: #0f766e;
  border: 1px solid rgba(13, 148, 136, 0.2);
}

/* 等流标题与元信息 */
.sir-title-stream {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-title);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 分层时间体系：相对友好时间 + 绝对精确日期 (Video 3 时间) */
.sir-time-group {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.sir-time-rel {
  font-weight: 500;
  color: var(--text-body);
}

.sir-time-abs {
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* 按钮出海自适应 (Video 6) */
.action-btn-sm {
  min-width: 52px;
  width: auto;
  max-width: 100%;
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid var(--border-line);
  background: var(--bg-subtle);
  color: var(--text-title);
  cursor: pointer;
  white-space: nowrap;
  touch-action: manipulation;
  transition: all var(--transition-fast);
}

.action-btn-sm:hover {
  background: var(--bg-hover);
  border-color: var(--border-focus);
}

.action-btn-sm.delete {
  background: #fef2f2;
  border-color: #fecaca;
  color: #b91c1c;
}

.action-btn-sm.delete:hover {
  background: #fee2e2;
  border-color: #b91c1c;
}

.action-btn-sm:active {
  transform: scale(0.95);
}

/* 移动端看板自适应 */
@media (max-width: 640px) {
  .studio-metric-board {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.5rem !important;
  }
  .studio-item-row {
    grid-template-columns: 1fr auto !important;
    grid-template-rows: auto auto !important;
    gap: 0.45rem !important;
    padding: 0.65rem 0.85rem !important;
  }
  .sir-title-stream {
    grid-column: 1 / 3 !important;
  }
}

/* 十年之约成员认证与虫洞胶囊优化 */
.fb-member-pill {
  font-weight: 600 !important;
  color: var(--text-title) !important;
  border-color: #2e7d32 !important;
}
.fb-member-pill:hover {
  background: rgba(46, 125, 50, 0.08) !important;
  border-color: #1b5e20 !important;
}

/* 十年之约官方Logo暗黑模式适配 */
body.ink-dark-mode .fb-light-img {
  display: none !important;
}
body.ink-dark-mode .fb-dark-img {
  display: inline-block !important;
}

/* Studio Message Review Card (Eliminates grid column squishing) */
.studio-msg-card {
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  padding: 1rem 1.25rem !important;
  margin-bottom: 0.85rem !important;
  background: var(--bg-card) !important;
  border: 1px solid var(--border-line) !important;
  border-radius: 6px !important;
  width: 100% !important;
  box-sizing: border-box !important;
  transition: all var(--transition-fast) !important;
}

.studio-msg-card:hover {
  background: var(--bg-hover) !important;
  border-color: rgba(0, 0, 0, 0.15) !important;
}

.studio-msg-header-row {
  display: flex !important;
  justify-content: space-between !important;
  align-items: flex-start !important;
  gap: 1rem !important;
  width: 100% !important;
}

.studio-echo-wrap {
  margin-top: 0.65rem !important;
  width: 100% !important;
  box-sizing: border-box !important;
}

.sir-echo-preview {
  display: block !important;
  width: 100% !important;
  box-sizing: border-box !important;
  padding: 0.65rem 0.9rem !important;
  background: var(--bg-subtle) !important;
  border-left: 3px solid var(--brand-seal, #b83b3b) !important;
  font-size: 0.84rem !important;
  color: var(--text-body) !important;
  border-radius: 3px !important;
  line-height: 1.6 !important;
  word-break: break-word !important;
}

.sir-echo-preview strong {
  color: var(--brand-seal, #b83b3b) !important;
  display: inline-block !important;
  margin-right: 0.35rem !important;
}

.sir-echo-preview.empty {
  font-size: 0.78rem !important;
  color: var(--text-muted) !important;
  font-style: italic !important;
  border-left: none !important;
  background: transparent !important;
  padding: 0.2rem 0 !important;
}

.inline-reply-box {
  margin-top: 0.65rem !important;
  padding-top: 0.65rem !important;
  border-top: 1px dashed var(--border-line) !important;
  width: 100% !important;
}

.inline-reply-inputs {
  display: flex !important;
  gap: 0.5rem !important;
  align-items: center !important;
  width: 100% !important;
}

.inline-reply-inputs input {
  flex: 1 !important;
  padding: 0.45rem 0.75rem !important;
  border: 1px solid var(--border-line) !important;
  border-radius: 4px !important;
  font-size: 0.85rem !important;
  background: var(--bg-paper) !important;
  color: var(--text-title) !important;
}

/* ==========================================================================
   2026.11.04 NEW: STUDIO GRADE GUESTBOOK WATERFALL & THREADED CARDS
   ========================================================================== */

/* 1. Masonry Waterfall Wall (Zero empty vertical holes) */
.messages-wall {
  display: block !important;
  columns: 3 280px !important;
  column-gap: 1.25rem !important;
  width: 100% !important;
}

@media (max-width: 992px) {
  .messages-wall {
    columns: 2 260px !important;
    column-gap: 1rem !important;
  }
}

@media (max-width: 640px) {
  .messages-wall {
    columns: 1 !important;
    column-gap: 0 !important;
  }
}

/* 2. Message Card Base */
.message-card {
  break-inside: avoid !important;
  page-break-inside: avoid;
  margin-bottom: 1.25rem !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: flex-start !important;
  gap: 0.85rem !important;
  background: var(--bg-card) !important;
  border: 1px solid var(--border-line) !important;
  border-radius: 12px !important;
  padding: 1.15rem 1.25rem !important;
  box-shadow: var(--shadow-sm) !important;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease, border-color 0.25s ease !important;
  position: relative !important;
  box-sizing: border-box !important;
}

.message-card:hover {
  transform: translateY(-2px);
  border-color: rgba(184, 59, 59, 0.28) !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06) !important;
}

/* 3. Guest Header: Sender Info & Time */
.msg-card-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 0.5rem !important;
  padding-bottom: 0.55rem !important;
  border-bottom: 1px dashed var(--border-subtle, rgba(0, 0, 0, 0.08)) !important;
}

.msg-sender-info {
  display: flex !important;
  align-items: center !important;
  gap: 0.55rem !important;
  min-width: 0 !important;
}

.msg-guest-avatar {
  width: 28px !important;
  height: 28px !important;
  border-radius: 50% !important;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.02)) !important;
  border: 1px solid var(--border-line, rgba(0, 0, 0, 0.08)) !important;
  color: var(--text-title) !important;
  font-family: var(--font-serif) !important;
  font-size: 0.78rem !important;
  font-weight: 700 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-shrink: 0 !important;
  text-transform: uppercase !important;
  user-select: none !important;
}

[data-theme="dark"] .msg-guest-avatar,
body.theme-dark .msg-guest-avatar {
  background: rgba(255, 255, 255, 0.06) !important;
  border-color: rgba(255, 255, 255, 0.12) !important;
  color: var(--text-title) !important;
}

.msg-author-wrap {
  display: flex !important;
  align-items: center !important;
  gap: 0.35rem !important;
  min-width: 0 !important;
}

.msg-author-name {
  font-weight: 600 !important;
  font-size: 0.88rem !important;
  color: var(--text-title) !important;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  letter-spacing: -0.01em !important;
}

.msg-role-tag {
  font-size: 0.65rem !important;
  color: var(--text-muted) !important;
  background: rgba(0, 0, 0, 0.04) !important;
  padding: 0.08rem 0.35rem !important;
  border-radius: 3px !important;
  line-height: 1.2 !important;
  white-space: nowrap !important;
}

[data-theme="dark"] .msg-role-tag,
body.theme-dark .msg-role-tag {
  background: rgba(255, 255, 255, 0.06) !important;
  color: var(--text-faint) !important;
}

.msg-time {
  font-size: 0.72rem !important;
  color: var(--text-muted) !important;
  flex-shrink: 0 !important;
  white-space: nowrap !important;
}

.msg-body {
  margin: 0 !important;
  padding: 0.15rem 0 !important;
}

.msg-text {
  margin: 0 !important;
  font-size: 0.92rem !important;
  line-height: 1.65 !important;
  color: var(--text-title) !important;
  word-break: break-word !important;
  overflow-wrap: break-word !important;
}

/* 4. Threaded Echo / Response Box */
.msg-echo-box {
  margin-top: 0.45rem !important;
  padding: 0.85rem 1rem !important;
  background: rgba(184, 59, 59, 0.035) !important;
  border: 1px solid rgba(184, 59, 59, 0.14) !important;
  border-left: 3.5px solid var(--brand-seal, #b83b3b) !important;
  border-radius: 8px !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.5rem !important;
  position: relative !important;
  box-sizing: border-box !important;
}

[data-theme="dark"] .msg-echo-box,
body.theme-dark .msg-echo-box {
  background: rgba(184, 59, 59, 0.08) !important;
  border-color: rgba(255, 255, 255, 0.08) !important;
  border-left-color: var(--brand-seal, #cf5d5d) !important;
}

.echo-header {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 0.5rem !important;
  margin-bottom: 0 !important;
}

.echo-sender {
  display: flex !important;
  align-items: center !important;
  gap: 0.45rem !important;
  min-width: 0 !important;
}

.echo-avatar {
  width: 22px !important;
  height: 22px !important;
  border-radius: 50% !important;
  object-fit: cover !important;
  border: 1.2px solid rgba(184, 59, 59, 0.35) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06) !important;
  flex-shrink: 0 !important;
}

.echo-author-name {
  font-family: var(--font-serif) !important;
  font-size: 0.78rem !important;
  font-weight: 600 !important;
  color: var(--brand-seal, #b83b3b) !important;
  letter-spacing: -0.01em !important;
  white-space: nowrap !important;
}

[data-theme="dark"] .echo-author-name,
body.theme-dark .echo-author-name {
  color: #f87171 !important;
}

.echo-badge-seal {
  font-size: 0.62rem !important;
  font-weight: 600 !important;
  padding: 0.08rem 0.36rem !important;
  border-radius: 3px !important;
  background: rgba(184, 59, 59, 0.08) !important;
  color: var(--brand-seal, #b83b3b) !important;
  border: 1px solid rgba(184, 59, 59, 0.28) !important;
  line-height: 1.2 !important;
  letter-spacing: 0.03em !important;
  white-space: nowrap !important;
  margin-left: 0 !important;
}

[data-theme="dark"] .echo-badge-seal,
body.theme-dark .echo-badge-seal {
  background: rgba(239, 68, 68, 0.15) !important;
  color: #fca5a5 !important;
  border-color: rgba(239, 68, 68, 0.35) !important;
}

.echo-time {
  font-size: 0.7rem !important;
  color: var(--text-muted) !important;
  flex-shrink: 0 !important;
  white-space: nowrap !important;
}

.echo-body {
  margin: 0 !important;
  padding: 0 !important;
}

.echo-text {
  margin: 0 !important;
  font-size: 0.86rem !important;
  line-height: 1.62 !important;
  color: var(--text-secondary) !important;
  word-break: break-word !important;
  overflow-wrap: break-word !important;
}

/* 5. Nav Brand Logo & Hero Avatar Badge */
.nav-brand-logo {
  width: 26px !important;
  height: 26px !important;
  border-radius: 50% !important;
  object-fit: cover !important;
  border: 1.5px solid var(--border-line, rgba(0, 0, 0, 0.1)) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08) !important;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease !important;
  flex-shrink: 0 !important;
  margin-right: 0.2rem !important;
}

.nav-brand:hover .nav-brand-logo {
  transform: rotate(8deg) scale(1.1) !important;
  border-color: var(--brand-seal, #b83b3b) !important;
}

.hero-brand-row {
  display: flex !important;
  align-items: center !important;
  gap: 0.85rem !important;
  margin-bottom: 1.25rem !important;
  flex-wrap: wrap !important;
}

.hero-brand-avatar {
  width: 44px !important;
  height: 44px !important;
  border-radius: 50% !important;
  padding: 2px !important;
  background: linear-gradient(135deg, rgba(184, 59, 59, 0.4), rgba(184, 59, 59, 0.08)) !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06) !important;
  flex-shrink: 0 !important;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease !important;
  cursor: pointer;
}

.hero-brand-avatar:hover {
  transform: scale(1.08) rotate(4deg) !important;
  box-shadow: 0 4px 16px rgba(184, 59, 59, 0.22) !important;
}

.hero-avatar-img {
  width: 100% !important;
  height: 100% !important;
  border-radius: 50% !important;
  object-fit: cover !important;
  display: block !important;
}

/* ==========================================================================
   2026.11.04 NEW: STUDIO GRADE UI POLISH & FEDERATION PILLS
   ========================================================================== */

/* 1. Webring Federation Pills */
.webring-links {
  display: flex !important;
  align-items: center !important;
  gap: 0.65rem !important;
  flex-wrap: wrap !important;
}

.webring-pill {
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.35rem !important;
  padding: 0.35rem 0.75rem !important;
  border-radius: 9999px !important;
  border: 1px solid var(--border-line) !important;
  background: var(--bg-card) !important;
  font-size: 0.78rem !important;
  color: var(--text-muted) !important;
  text-decoration: none !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  white-space: nowrap !important;
}

.webring-pill:hover {
  border-color: var(--brand-seal, #b83b3b) !important;
  color: var(--text-title) !important;
  transform: translateY(-1.5px) !important;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.06) !important;
}

[data-theme="dark"] .webring-pill,
body.theme-dark .webring-pill {
  background: rgba(255, 255, 255, 0.04) !important;
  border-color: rgba(255, 255, 255, 0.1) !important;
  color: var(--text-muted) !important;
}

[data-theme="dark"] .webring-pill:hover,
body.theme-dark .webring-pill:hover {
  border-color: #f87171 !important;
  color: var(--text-title) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}

/* 2. Form Ergonomic Focus Rings */
.paper-input:focus,
.paper-textarea:focus {
  outline: none !important;
  border-color: var(--brand-seal, #b83b3b) !important;
  box-shadow: 0 0 0 3px rgba(184, 59, 59, 0.1) !important;
}

/* 3. Category Filter Tabs Polish */
.cat-tab {
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.cat-tab.active {
  background: var(--text-title) !important;
  color: var(--bg-paper) !important;
  border-color: var(--text-title) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08) !important;
}

/* 4. Dark Mode Article Title Hover Protection */
[data-theme="dark"] .essay-row-item:hover .essay-title-col,
body.theme-dark .essay-row-item:hover .essay-title-col {
  color: #fca5a5 !important;
}