/* =====================================================================
   claudemod — Claude/Anthropic-inspired Hugo theme
   ===================================================================== */

/* ── CSS Variables ────────────────────────────────────────────────── */
:root {
  /* Dark palette (default) */
  --bg:           #0c0c12;
  --bg-2:         #121218;
  --bg-card:      #15151f;
  --bg-card-h:    #1d1d2b;
  --bg-nav:       rgba(12, 12, 18, 0.90);

  /* Dark text: not pure white — softer on the eye, editorial feel */
  --text:         rgba(255, 255, 255, 0.86);
  --text-2:       rgba(255, 255, 255, 0.50);
  --text-muted:   rgba(255, 255, 255, 0.28);

  --accent:       #7c3aed;
  --accent-l:     #a78bfa;
  --accent-glow:  rgba(124, 58, 237, 0.22);
  --accent-2:     #f97316;
  --accent-3:     #10b981;

  --border:       rgba(255, 255, 255, 0.07);
  --border-s:     rgba(255, 255, 255, 0.14);

  /* Layout */
  --nav-h:        64px;
  --c-max:        1200px;
  --c-read:       740px;
  --r:            12px;
  --r-sm:         6px;

  /* Typography
     Latin glyphs → Source Serif 4 (400 / 600)
     CJK glyphs   → Source Han Serif CN (400 / 600)
     unicode-range in @font-face keeps each font on its own script */
  --f-serif: 'Source Serif 4', 'Source Han Serif CN',
             'Songti SC', 'SimSun', Georgia, serif;
  --f-head:  var(--f-serif);          /* headings — weight 600 */
  --f-body:  var(--f-serif);          /* body     — weight 400 */
  --f-sans:  var(--f-serif);          /* UI elements — same font stack for consistency */
  --f-mono:  'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Type scale */
  --text-base: 18px;
  --lh-prose:  1.9;
  --lh-tight:  1.25;

  /* Transitions */
  --t:      0.2s ease;
  --t-slow: 0.4s ease;

  --shadow: 0 4px 28px rgba(0, 0, 0, 0.45);
  --glow:   0 0 32px var(--accent-glow);
}

[data-theme="light"] {
  --bg:        #f5f5fb;
  --bg-2:      #ebebf5;
  --bg-card:   #ffffff;
  --bg-card-h: #f0f0fa;
  --bg-nav:    rgba(245, 245, 251, 0.92);

  --text:      #1a1a2e;
  --text-2:    #44445a;
  --text-muted:#88889a;

  --border:    rgba(0, 0, 0, 0.07);
  --border-s:  rgba(0, 0, 0, 0.14);

  --shadow: 0 4px 28px rgba(0, 0, 0, 0.09);
}

/* ── Reset ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
/* Guarantee [hidden] works even when author CSS sets display explicitly */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  /* Subpixel rendering — consistent across light and dark */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: var(--text-base);       /* 18px desktop */
  line-height: var(--lh-prose);      /* 1.9 */
  min-height: 100vh;
  font-weight: 400;
  font-variant-ligatures: common-ligatures;
  transition: background var(--t-slow), color var(--t-slow);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font: inherit; }

/* ── Container ────────────────────────────────────────────────────── */
.container {
  max-width: var(--c-max);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ── Header / Nav ─────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background var(--t-slow), border-color var(--t-slow);
}

.nav {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 8px;
}

.nav-logo {
  font-family: var(--f-sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text);
  flex-shrink: 0;
  margin-inline-end: 16px;
  transition: color var(--t);
}
.nav-logo:hover { color: var(--accent-l); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-inline-start: auto;
}

.nav-link {
  padding: 6px 13px;
  border-radius: var(--r-sm);
  font-family: var(--f-sans);
  font-size: 14px;
  color: var(--text-2);
  transition: color var(--t), background var(--t);
}
.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: var(--border);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-inline-start: 12px;
}

.nav-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
  flex-shrink: 0;
}
.nav-btn:hover {
  color: var(--text);
  border-color: var(--border-s);
  background: var(--border);
}

.nav-mobile-toggle { display: none; }

/* ── Language Switcher ────────────────────────────────────────────── */
.lang-switcher { position: relative; }

.lang-current {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  font-family: var(--f-sans);
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  background: transparent;
  user-select: none;
  transition: all var(--t);
}
.lang-current:hover {
  border-color: var(--border-s);
  color: var(--text);
}

.lang-dropdown {
  position: absolute;
  inset-block-start: calc(100% + 6px);
  inset-inline-end: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-s);
  border-radius: var(--r);
  padding: 6px;
  min-width: 120px;
  box-shadow: var(--shadow);
  display: none;
  z-index: 50;
}
.lang-dropdown.open { display: block; }

.lang-option {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  font-family: var(--f-sans);
  font-size: 14px;
  color: var(--text-2);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: all var(--t);
}
.lang-option:hover, .lang-option.current {
  background: var(--border);
  color: var(--text);
}

/* Translation loading bar */
body.translating::after {
  content: '';
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-l), var(--accent));
  background-size: 200% 100%;
  animation: translatingBar 1.5s linear infinite;
  z-index: 200;
}
@keyframes translatingBar {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block-start: var(--nav-h);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-block: 80px;
}

.hero-label {
  font-family: var(--f-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent-l);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--f-serif);
  font-size: clamp(34px, 5.5vw, 68px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: 0.01em;    /* Source Serif 4 looks better with slight tracking */
  color: var(--text);
  margin-bottom: 22px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-l) 0%, #c084fc 50%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: var(--f-sans);
  font-size: 18px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 440px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── Animated category list (right side of hero) ─────────────────── */
.hero-categories {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-cat-link {
  font-family: var(--f-serif);
  font-size: clamp(18px, 2.5vw, 32px);
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  transition: color var(--t);
}
.hero-cat-link:hover { color: var(--text); }

.hero-arrow {
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--t), transform var(--t);
  color: var(--accent-l);
}
.hero-cat-link:hover .hero-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: var(--r);
  font-family: var(--f-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}
.btn-primary:hover {
  background: #6d28d9;
  box-shadow: var(--glow);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-s);
}
.btn-outline:hover {
  background: var(--border);
  transform: translateY(-1px);
}

/* ── Sections ─────────────────────────────────────────────────────── */
.section { padding-block: 80px; }

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 36px;
}

.section-title {
  font-family: var(--f-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.section-more {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--f-sans);
  font-size: 14px;
  color: var(--accent-l);
  transition: gap var(--t);
}
.section-more:hover { gap: 8px; }

/* ── List page hero (conditional two-column) ─────────────────────── */
.list-hero-inner--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

/* ── List page hero ───────────────────────────────────────────────── */
.list-hero {
  padding-block: calc(var(--nav-h) + 60px) 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 60px;
}

.list-title {
  font-family: var(--f-serif);
  font-size: clamp(28px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 12px;
  line-height: var(--lh-tight);
}

.list-description {
  font-family: var(--f-sans);
  font-size: 17px;
  color: var(--text-2);
  max-width: 600px;
  margin-bottom: 24px;
}

.list-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.list-cat-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid var(--border-s);
  font-family: var(--f-sans);
  font-size: 13px;
  color: var(--text-2);
  transition: all var(--t);
}
.list-cat-tag:hover {
  border-color: var(--accent);
  color: var(--accent-l);
  background: var(--accent-glow);
}
.list-cat-count {
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Post Cards ───────────────────────────────────────────────────── */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  transition: border-color var(--t), background var(--t), transform 0.3s ease,
              box-shadow 0.3s ease, opacity 0.5s ease var(--reveal-delay, 0ms);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  border-color: var(--border-s);
  background: var(--bg-card-h);
  transform: translateY(-5px);
  box-shadow: var(--shadow), 0 0 48px rgba(124, 58, 237, 0.10);
}
body.animate-cards .post-card {
  opacity: 0;
  transform: translateY(22px);
}
body.animate-cards .post-card.revealed {
  opacity: 1;
  transform: none;
}

.post-card-link {
  display: flex;
  flex-direction: column;
  flex: 1;
  outline-offset: 4px;
}

.post-card-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e3a5f 100%);
  flex-shrink: 0;
}
.post-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.post-card:hover .post-card-cover img { transform: scale(1.05); }

.post-card-cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}

.post-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.post-category {
  font-family: var(--f-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--accent-glow);
  color: var(--accent-l);
  border: 1px solid rgba(124, 58, 237, 0.2);
  transition: background var(--t), color var(--t);
}
a.post-category:hover {
  background: rgba(124, 58, 237, 0.35);
}

.post-date, .post-reading-time {
  font-family: var(--f-sans);
  font-size: 12px;
  color: var(--text-muted);
}

.post-card-title {
  font-family: var(--f-sans);
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.45;
  flex: 1;
  transition: color var(--t);
}
.post-card:hover .post-card-title { color: var(--accent-l); }

.post-card-excerpt {
  font-family: var(--f-sans);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Empty state ──────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
  font-family: var(--f-sans);
}
.empty-state code {
  font-family: var(--f-mono);
  font-size: 0.9em;
  background: var(--bg-2);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: var(--r-sm);
  color: var(--accent-l);
}

/* ── Pagination ───────────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding-block: 60px;
}

.page-link {
  min-width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  font-family: var(--f-sans);
  font-size: 14px;
  color: var(--text-2);
  transition: all var(--t);
  padding-inline: 10px;
}
.page-link:hover, .page-link.active {
  border-color: var(--accent);
  color: var(--accent-l);
  background: var(--accent-glow);
}

/* ── Single Post ──────────────────────────────────────────────────── */
.post-header {
  padding-block: calc(var(--nav-h) + 64px) 48px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.post-header-inner { max-width: var(--c-read); }

.post-categories {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.post-title {
  font-family: var(--f-serif);
  font-size: clamp(26px, 4vw, 50px);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.18;
  margin-bottom: 22px;
  color: var(--text);
}

.post-subtitle {
  font-family: var(--f-sans);
  font-size: 18px;
  color: var(--text-2);
  max-width: 560px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.post-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.post-info-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--f-sans);
  font-size: 13px;
  color: var(--text-muted);
}

.post-cover-wrap { margin-bottom: 56px; }
.post-cover-full {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: var(--r);
}

.post-body-wrap { max-width: var(--c-read); margin-inline: auto; padding-bottom: 80px; }

/* ── Post Content (markdown) ──────────────────────────────────────── */
.post-content {
  /* Inherit body font-size (18px) and line-height (1.9) from <body>.
     Override only what's specific to prose. */
  font-family: var(--f-serif);
  font-weight: 400;
}

/* Headings: Source Serif 4 SemiBold / Source Han Serif CN Medium
   More vertical breathing room than traditional blogs.
   Slight positive tracking — Source Serif 4 is optically comfortable there. */
.post-content h1, .post-content h2, .post-content h3,
.post-content h4, .post-content h5, .post-content h6 {
  font-family: var(--f-serif);
  font-weight: 600;
  color: var(--text);
  line-height: var(--lh-tight);
  letter-spacing: 0.015em;
}
.post-content h1 { font-size: 1.9em;  margin-block: 2.2em 0.8em; }
.post-content h2 { font-size: 1.45em; margin-block: 2.4em 0.75em;
  padding-bottom: 0.35em; border-bottom: 1px solid var(--border); }
.post-content h3 { font-size: 1.2em;  margin-block: 2em 0.6em; }
.post-content h4 { font-size: 1.05em; margin-block: 1.8em 0.5em; }

.post-content p { margin-bottom: 1.65em; }

/* Colored inline spans: force grayscale AA + geometric precision to prevent
   subpixel color fringing that makes red text look fuzzy on LCD screens. */
.post-content span[style*="color"] {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
}

.post-content a {
  color: var(--accent-l);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(167, 139, 250, 0.35);
  transition: text-decoration-color var(--t);
}
.post-content a:hover { text-decoration-color: var(--accent-l); }

/* Blockquote — Claude-style: thin left rule + translucent warm bg */
.post-content blockquote {
  position: relative;
  margin-block: 2.2em;
  padding: 1.1em 1.6em 1.1em 1.8em;
  border-left: 2px solid var(--accent);
  background: rgba(124, 58, 237, 0.07);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--text-2);
  font-style: italic;
}
[data-theme="light"] .post-content blockquote {
  background: rgba(124, 58, 237, 0.05);
}
.post-content blockquote p { margin-bottom: 0; }
.post-content blockquote p + p { margin-top: 0.8em; }

/* Inline code — stays monospace, no serif */
.post-content code {
  font-family: var(--f-mono);
  font-size: 0.855em;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  color: var(--accent-l);
  font-style: normal;
}
[data-theme="light"] .post-content code {
  background: rgba(0, 0, 0, 0.05);
}

/* Code blocks — monospace, no serif */
.post-content pre {
  font-family: var(--f-mono);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.4em 1.6em;
  overflow-x: auto;
  margin-block: 1.8em;
  line-height: 1.65;
}
.post-content pre code {
  font-family: var(--f-mono);
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: 14px;
}

.post-content img {
  border-radius: var(--r);
  margin-block: 1.5em;
  max-width: 100%;
}

.post-content ul, .post-content ol {
  list-style: revert;
  padding-left: 1.6em;
  margin-bottom: 1.5em;
}
.post-content li { margin-bottom: 0.4em; }

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-block: 1.75em;
  font-size: 15px;
  font-family: var(--f-sans);
}
.post-content th, .post-content td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  text-align: left;
}
.post-content th {
  background: var(--bg-card);
  font-weight: 500;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin-block: 2.5em;
}

/* ── Post tags ────────────────────────────────────────────────────── */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-family: var(--f-sans);
  font-size: 13px;
  color: var(--text-2);
  transition: all var(--t);
}
.tag-item:hover {
  border-color: var(--accent);
  color: var(--accent-l);
  background: var(--accent-glow);
}

/* ── Post nav ─────────────────────────────────────────────────────── */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: var(--c-read);
  margin-block: 0 80px;
}

.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg-card);
  transition: all var(--t);
}
.post-nav-link:hover {
  border-color: var(--accent);
  background: var(--bg-card-h);
}
.post-nav-link.next { text-align: right; align-items: flex-end; }

.post-nav-direction {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--f-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.post-nav-link.next .post-nav-direction { flex-direction: row-reverse; }

.post-nav-title {
  font-family: var(--f-sans);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
  transition: color var(--t);
}
.post-nav-link:hover .post-nav-title { color: var(--accent-l); }

/* ── Related posts ────────────────────────────────────────────────── */
.related-posts {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding-block: 64px;
}

/* ── Footer ───────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 0;
}

/* Three-column body */
.footer-body {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px 40px;
  padding-block: 56px 40px;
}

.footer-col { display: flex; flex-direction: column; gap: 14px; }

/* Brand column */
.footer-brand {
  font-family: var(--f-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.footer-brand:hover { color: var(--accent-l); }

.footer-brand-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 280px;
}

.footer-badges {
  display: grid;
  grid-template-columns: auto auto;
  justify-content: start;
  justify-items: start;
  gap: 8px;
  margin-top: 4px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-family: var(--f-mono);
  padding: 4px 9px;
  border-radius: 4px;
  border: 1px solid var(--border-s);
  color: var(--text-muted);
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: opacity var(--t), border-color var(--t);
  user-select: none;
}
a.footer-badge:hover { opacity: 0.75; }

/* Cloudflare — orange */
.footer-badge-cf {
  border-color: rgba(246, 130, 31, 0.30);
  color: #F6821F;
  background: rgba(246, 130, 31, 0.05);
}
/* Hugo — purple */
.footer-badge-hugo {
  border-color: rgba(167, 139, 250, 0.30);
  color: var(--accent-l);
  background: rgba(167, 139, 250, 0.05);
}
/* Adobe 思源宋体 — adobe red */
.footer-badge-adobe {
  border-color: rgba(255, 0, 0, 0.20);
  color: #ff4444;
  background: rgba(255, 0, 0, 0.04);
}
/* LoveClaude — soft pink/accent */
.footer-badge-lc {
  border-color: rgba(236, 72, 153, 0.25);
  color: #f472b6;
  background: rgba(236, 72, 153, 0.05);
  cursor: default;
}

/* Column titles */
.footer-col-title {
  font-family: var(--f-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.footer-col-more {
  font-size: 11px;
  font-weight: 400;
  color: var(--accent-l);
  text-decoration: none;
  letter-spacing: 0;
  text-transform: none;
  opacity: 0.7;
  transition: opacity var(--t);
}
.footer-col-more:hover { opacity: 1; }

/* Nav links */
.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-nav-link {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--t);
  width: fit-content;
}
.footer-nav-link:hover { color: var(--text); }

/* Friends list */
.footer-friends-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-friend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--t);
  width: fit-content;
}
.footer-friend-item:hover { color: var(--text); }
.footer-friend-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-l);
  opacity: 0.45;
  flex-shrink: 0;
  transition: opacity var(--t);
}
.footer-friend-item:hover .footer-friend-dot { opacity: 1; }
.footer-friend-empty { font-size: 13px; color: var(--text-muted); }

/* Bottom bar */
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-block: 20px;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-copyright, .footer-icp {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--f-mono);
}
.footer-icp { opacity: 0.55; }

/* ── 404 ──────────────────────────────────────────────────────────── */
.page-404 {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-block-start: var(--nav-h);
}
.page-404-code {
  font-family: var(--f-head);
  font-size: clamp(80px, 15vw, 160px);
  font-weight: 900;
  color: var(--border-s);
  line-height: 1;
  margin-bottom: 16px;
}
.page-404-title {
  font-family: var(--f-head);
  font-size: 28px;
  color: var(--text);
  margin-bottom: 12px;
}
.page-404-text {
  font-family: var(--f-sans);
  color: var(--text-2);
  font-size: 16px;
  margin-bottom: 32px;
}

/* ── Scroll to top ────────────────────────────────────────────────── */
.scroll-top {
  position: fixed;
  inset-block-end: 28px;
  inset-inline-end: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all var(--t);
  z-index: 50;
}
.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.scroll-top:hover {
  background: #6d28d9;
  box-shadow: var(--glow);
}

/* ── Taxonomy / Tags page ─────────────────────────────────────────── */
.tags-page {
  padding-block: calc(var(--nav-h) + 60px) 80px;
}
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 80px;
}

/* ── Archives page ────────────────────────────────────────────────── */
.archive-wrap { padding-bottom: 80px; }

.archive-year { margin-bottom: 48px; }

.archive-year-label {
  font-family: var(--f-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-l);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.archive-list { display: flex; flex-direction: column; gap: 2px; }

.archive-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  transition: background var(--t);
}
.archive-item:hover { background: var(--bg-card); }

.archive-date {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
  width: 40px;
}

.archive-title {
  font-family: var(--f-sans);
  font-size: 15px;
  color: var(--text);
  flex: 1;
  transition: color var(--t);
}
.archive-item:hover .archive-title { color: var(--accent-l); }

.archive-cat {
  font-size: 10px;
  flex-shrink: 0;
}

/* ── TOC ──────────────────────────────────────────────────────────── */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 20px 24px;
  margin-bottom: 40px;
}

.toc-title {
  font-family: var(--f-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.toc nav,
.toc #TableOfContents { font-family: var(--f-sans); }

.toc #TableOfContents ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}
.toc #TableOfContents ul ul { padding-left: 16px; margin-top: 4px; }

.toc #TableOfContents li { margin-bottom: 4px; }

.toc #TableOfContents a {
  font-size: 14px;
  color: var(--text-2);
  transition: color var(--t);
  text-decoration: none;
  line-height: 1.5;
}
.toc #TableOfContents a:hover { color: var(--accent-l); }

/* ── Blog: two-column hero ────────────────────────────────────────── */
.list-hero-cats {
  display: flex;
  flex-direction: column;
  gap: 4px;
  justify-self: end;
}

/* ── Blog: sidebar + main layout ─────────────────────────────────── */
.blog-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  align-items: start;
}

.blog-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  padding-top: 4px;
}

.sidebar-heading {
  font-family: var(--f-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.filter-section {
  margin-bottom: 6px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}
.filter-section:last-child { border-bottom: none; }

.filter-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 9px 0;
  background: none;
  border: none;
  color: var(--text-2);
  font-family: var(--f-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--t);
}
.filter-toggle:hover { color: var(--text); }
.filter-toggle .chevron { transition: transform var(--t); flex-shrink: 0; }
.filter-toggle.open .chevron { transform: rotate(180deg); }

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease, padding-bottom 0.28s ease;
  padding-bottom: 0;
}
.filter-list.open {
  max-height: 600px;
  padding-bottom: 8px;
}

.filter-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 7px 10px;
  border-radius: var(--r-sm);
  border: none;
  background: none;
  color: var(--text-2);
  font-family: var(--f-sans);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  transition: all var(--t);
}
.filter-option:hover {
  background: var(--border);
  color: var(--text);
}
.filter-option.active {
  background: var(--accent-glow);
  color: var(--accent-l);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

.filter-count {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 6px;
  flex-shrink: 0;
}
.filter-option.active .filter-count { color: var(--accent-l); opacity: 0.7; }

/* ── Blog toolbar: search + view toggle ──────────────────────────── */
.blog-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.search-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}
.search-wrap svg {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 9px 14px 9px 36px;
  border-radius: var(--r);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-family: var(--f-sans);
  font-size: 14px;
  outline: none;
  transition: border-color var(--t), background var(--t);
  -webkit-appearance: none;
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus {
  border-color: var(--accent);
  background: var(--bg-card-h);
}

.view-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.view-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--t);
}
.view-btn:hover { color: var(--text); background: var(--border); }
.view-btn.active {
  background: var(--accent-glow);
  color: var(--accent-l);
}

/* ── New post card ────────────────────────────────────────────────── */
.card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  flex-shrink: 0;
  border-radius: var(--r) var(--r) 0 0;
  position: relative;
}
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
  transition: transform 0.4s ease, filter 0.4s ease;
}
.post-card:hover .card-media img { transform: scale(1.05); }

/* ── Emoji card: studio spotlight ─────────────────────────────────── */
/* Photo covers sit above pseudo-element decorations */
.card-media:has(img)::before,
.card-media:has(img)::after { display: none; }

/* Dark-mode base: near-black with category colour tint */
.card-media--emoji {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0e0c0a;
  --spot: rgba(255,235,210,0.13);
}
.post-card[data-categories*="心事"] .card-media--emoji { background: #130907; --spot: rgba(245,125,80,0.28); }
.post-card[data-categories*="自由"]  .card-media--emoji { background: #07090f; --spot: rgba(75,155,255,0.26); }
.post-card[data-categories*="随笔"]  .card-media--emoji { background: #0d0b06; --spot: rgba(255,205,95,0.24); }
.post-card[data-categories*="技术"]  .card-media--emoji { background: #090710; --spot: rgba(124,58,237,0.32); }

/* Light-mode base: pale tinted parchment */
[data-theme="light"] .card-media--emoji { background: #f3f1ee; --spot: rgba(200,185,160,0.20); }
[data-theme="light"] .post-card[data-categories*="心事"] .card-media--emoji { background: #f8eee8; --spot: rgba(215,90,50,0.13); }
[data-theme="light"] .post-card[data-categories*="自由"]  .card-media--emoji { background: #eaf0f9; --spot: rgba(40,110,220,0.12); }
[data-theme="light"] .post-card[data-categories*="随笔"]  .card-media--emoji { background: #f6f1e8; --spot: rgba(190,150,40,0.12); }
[data-theme="light"] .post-card[data-categories*="技术"]  .card-media--emoji { background: #f0eef8; --spot: rgba(124,58,237,0.14); }

/* ::before — spotlight halo radiating from behind the emoji */
.card-media--emoji::before {
  content: '';
  position: absolute !important;
  inset: 0 !important;
  width: auto !important;
  aspect-ratio: auto !important;
  border-radius: 0 !important;
  background: radial-gradient(
    ellipse 70% 64% at 50% 52%,
    var(--spot) 0%,
    transparent 72%
  ) !important;
  pointer-events: none;
  z-index: 0;
}

/* ::after — vignette pulls focus to centre */
.card-media--emoji::after {
  content: '';
  position: absolute !important;
  inset: 0 !important;
  background: radial-gradient(
    ellipse 100% 100% at 50% 50%,
    transparent 15%,
    rgba(0,0,0,0.54) 100%
  ) !important;
  pointer-events: none;
  z-index: 0;
}
[data-theme="light"] .card-media--emoji::after {
  background: radial-gradient(
    ellipse 100% 100% at 50% 50%,
    transparent 30%,
    rgba(0,0,0,0.09) 100%
  ) !important;
}

/* Title typography behind the emoji */
.card-cover-title-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  font-size: clamp(1.6rem, 5vw, 2.8rem);
  font-weight: 800;
  font-family: var(--f-head);
  line-height: 1.2;
  text-align: center;
  color: rgba(255, 255, 255, 0.055);
  letter-spacing: -0.02em;
  word-break: break-all;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
  user-select: none;
  filter: blur(0.6px);
}
[data-theme="light"] .card-cover-title-bg {
  color: rgba(0, 0, 0, 0.07);
}
.post-card:hover .card-cover-title-bg {
  color: rgba(255, 255, 255, 0.08);
}
[data-theme="light"] .post-card:hover .card-cover-title-bg {
  color: rgba(0, 0, 0, 0.10);
}

/* Emoji glyph: floats above all overlay layers */
.card-emoji {
  position: relative;
  z-index: 2;
  font-size: 3.8rem;
  line-height: 1;
  filter: drop-shadow(0 8px 28px rgba(0,0,0,0.55));
  transition: transform 0.4s ease, filter 0.4s ease;
  user-select: none;
}
[data-theme="light"] .card-emoji {
  filter: drop-shadow(0 5px 16px rgba(0,0,0,0.22));
}
.post-card:hover .card-emoji {
  transform: scale(1.16) translateY(-5px);
  filter: drop-shadow(0 18px 44px rgba(0,0,0,0.65));
}
[data-theme="light"] .post-card:hover .card-emoji {
  filter: drop-shadow(0 10px 28px rgba(0,0,0,0.30));
}

/* Cycling warm/cool palette — photo cards only, emoji cards use spotlight bg */
.posts-grid .post-card:nth-child(6n+1) .card-media:not(.card-media--emoji) { background: linear-gradient(140deg, #c97055 0%, #e8956a 100%); }
.posts-grid .post-card:nth-child(6n+2) .card-media:not(.card-media--emoji) { background: linear-gradient(140deg, #4a7db5 0%, #6a9dd5 100%); }
.posts-grid .post-card:nth-child(6n+3) .card-media:not(.card-media--emoji) { background: linear-gradient(140deg, #5a9e7a 0%, #7abf9a 100%); }
.posts-grid .post-card:nth-child(6n+4) .card-media:not(.card-media--emoji) { background: linear-gradient(140deg, #9070b0 0%, #b090d0 100%); }
.posts-grid .post-card:nth-child(6n+5) .card-media:not(.card-media--emoji) { background: linear-gradient(140deg, #d4956a 0%, #e8c070 100%); }
.posts-grid .post-card:nth-child(6n+0) .card-media:not(.card-media--emoji) { background: linear-gradient(140deg, #7a9e6a 0%, #9abf8a 100%); }

.card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-date {
  font-family: var(--f-sans);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.card-title {
  font-family: var(--f-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.38;
  transition: color var(--t);
}
.post-card:hover .card-title { color: var(--accent-l); }

.card-excerpt {
  font-family: var(--f-sans);
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
  margin-top: 5px;
  flex: 1;
}
.card-excerpt--protected {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-muted);
  font-style: italic;
  font-size: 12px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* ── Blog section: 2-column grid (sidebar present) ───────────────── */
.posts-grid--blog {
  grid-template-columns: repeat(2, 1fr);
}

/* ── List view mode ───────────────────────────────────────────────── */
.posts-grid.view-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.posts-grid.view-list .post-card {
  flex-direction: row;
  border-radius: var(--r);
}
.posts-grid.view-list .card-media {
  width: 180px;
  aspect-ratio: auto;
  border-radius: var(--r) 0 0 var(--r);
  flex-shrink: 0;
}
.posts-grid.view-list .card-body {
  padding: 16px 20px;
  justify-content: center;
}
.posts-grid.view-list .card-title { font-size: 16px; }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner  { grid-template-columns: 1fr; gap: 40px; }
  .hero-categories { display: none; }
}

@media (max-width: 768px) {
  /* Mobile font size: 16.5px */
  :root { --text-base: 16.5px; }

  .nav-links {
    display: none;
    position: fixed;
    inset-block-start: var(--nav-h);
    inset-inline: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--bg-nav);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: 16px;
    border-bottom: 1px solid var(--border);
    gap: 2px;
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-link { width: 100%; padding: 10px 14px; }
  .nav-mobile-toggle { display: flex; }

  .posts-grid { grid-template-columns: 1fr; }
  .posts-grid--blog { grid-template-columns: 1fr; }
  .blog-sidebar { grid-template-columns: 1fr; }
  .blog-toolbar { flex-wrap: wrap; }

  .posts-grid.view-list .card-media { width: 120px; }

  .post-nav { grid-template-columns: 1fr; }

  .footer-body {
    grid-template-columns: 1fr 1fr;
    gap: 28px 20px;
    padding-block: 40px 28px;
  }
  .footer-col-brand {
    grid-column: 1 / -1;
  }
  .footer-brand-desc { max-width: 100%; }
  .footer-bottom-inner { flex-direction: column; text-align: center; gap: 6px; }

  .post-header { padding-block-start: calc(var(--nav-h) + 32px); }
  .post-info { gap: 12px; }

  .section { padding-block: 56px; }
  .list-hero { padding-block: calc(var(--nav-h) + 32px) 36px; }

  .hero-subtitle { font-size: 17px; }
  .post-content h2 { font-size: 1.3em; }
}

@media (max-width: 480px) {
  .container { padding-inline: 16px; }
  .hero-title { font-size: 28px; }
  .posts-grid { gap: 14px; }
}

/* =====================================================================
   Enhancement layer — animations, polish, micro-interactions
   ===================================================================== */

/* ── Page enter ───────────────────────────────────────────────────── */
@keyframes pageEnter {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}
.main {
  animation: pageEnter 0.45s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

/* ── Reading progress bar ─────────────────────────────────────────── */
#reading-progress {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-l) 55%, var(--accent-2) 100%);
  transform-origin: left center;
  transform: scaleX(0);
  z-index: 150;
  pointer-events: none;
  will-change: transform;
}

/* ── Hero orbs ────────────────────────────────────────────────────── */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
}
[data-theme="dark"]  .hero-orb { opacity: 0.18; }
[data-theme="light"] .hero-orb { opacity: 0.08; }

.hero-orb-1 {
  width: 560px; height: 560px;
  background: var(--accent);
  top: -18%; right: -4%;
  filter: blur(100px);
  animation: orbDrift1 16s ease-in-out infinite alternate;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: var(--accent-2);
  bottom: -8%; left: 2%;
  filter: blur(90px);
  animation: orbDrift2 20s ease-in-out infinite alternate;
}
.hero-orb-3 {
  width: 300px; height: 300px;
  background: var(--accent-3);
  top: 35%; left: 42%;
  filter: blur(110px);
  animation: orbDrift3 13s ease-in-out infinite alternate;
}

@keyframes orbDrift1 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(50px, 70px) scale(1.08); }
}
@keyframes orbDrift2 {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-40px, -50px) scale(0.93); }
}
@keyframes orbDrift3 {
  from { transform: translate(0, 0); }
  to   { transform: translate(30px, -40px); }
}

/* ── Hero scroll hint ─────────────────────────────────────────────── */
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  animation: scrollBounce 2.2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50%       { transform: translateX(-50%) translateY(6px); opacity: 1; }
}

/* ── Card media art: floating shape + texture overlay ─────────────── */
/* ::before — large abstract circle, position varies per color slot */
/* (excluded from emoji cards which use their own spotlight pseudo-elements) */
.posts-grid:not(.view-list) .post-card .card-media:not(.card-media--emoji)::before,
.posts-grid:not(.view-list) .post-card .card-media:not(.card-media--emoji)::after {
  content: '';
  position: absolute;
  pointer-events: none;
}

/* Floating circle shape */
.posts-grid:not(.view-list) .post-card .card-media::before {
  width: 130%; aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.10);
}
.posts-grid:not(.view-list) .post-card:nth-child(6n+1) .card-media::before { top: -55%; right: -25%; }
.posts-grid:not(.view-list) .post-card:nth-child(6n+2) .card-media::before { top: -45%; left: -30%; width: 110%; }
.posts-grid:not(.view-list) .post-card:nth-child(6n+3) .card-media::before { bottom: -60%; right: -20%; }
.posts-grid:not(.view-list) .post-card:nth-child(6n+4) .card-media::before { top: -50%; left: -10%; width: 120%; }
.posts-grid:not(.view-list) .post-card:nth-child(6n+5) .card-media::before { bottom: -50%; left: -25%; }
.posts-grid:not(.view-list) .post-card:nth-child(6n+0) .card-media::before { top: -40%; right: -30%; width: 115%; }

/* Texture overlay (unique pattern per slot) */
.posts-grid:not(.view-list) .post-card:nth-child(6n+1) .card-media::after {
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg, transparent, transparent 14px,
    rgba(255,255,255,0.06) 14px, rgba(255,255,255,0.06) 15px
  );
}
.posts-grid:not(.view-list) .post-card:nth-child(6n+2) .card-media::after {
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.14) 1.5px, transparent 1.5px);
  background-size: 18px 18px;
}
.posts-grid:not(.view-list) .post-card:nth-child(6n+3) .card-media::after {
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg, transparent, transparent 12px,
    rgba(255,255,255,0.06) 12px, rgba(255,255,255,0.06) 13px
  );
}
.posts-grid:not(.view-list) .post-card:nth-child(6n+4) .card-media::after {
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 22px 22px;
}
.posts-grid:not(.view-list) .post-card:nth-child(6n+5) .card-media::after {
  inset: 0;
  background-image: radial-gradient(
    circle at 50% 50%,
    rgba(255,255,255,0.10) 0, rgba(255,255,255,0.10) 8px,
    transparent 8px, transparent 18px,
    rgba(255,255,255,0.06) 18px, rgba(255,255,255,0.06) 26px,
    transparent 26px, transparent 36px
  );
}
.posts-grid:not(.view-list) .post-card:nth-child(6n+0) .card-media::after {
  inset: 0;
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 12px, rgba(255,255,255,0.05) 12px, rgba(255,255,255,0.05) 13px),
    repeating-linear-gradient(-45deg, transparent, transparent 12px, rgba(255,255,255,0.05) 12px, rgba(255,255,255,0.05) 13px);
}


/* ── Blockquote — decorative quote mark ───────────────────────────── */
.post-content blockquote {
  position: relative;
  overflow: visible;
}
.post-content blockquote::before {
  content: '\201C';
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 5em;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.35;
  position: absolute;
  top: -0.25em;
  left: 0.1em;
  line-height: 1;
  pointer-events: none;
}

/* ── Code copy button ─────────────────────────────────────────────── */
.post-content pre { position: relative; }

.code-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-s);
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t), color var(--t), border-color var(--t), background var(--t);
}
.post-content pre:hover .code-copy { opacity: 1; }
.code-copy:hover {
  color: var(--text);
  border-color: var(--border-s);
  background: var(--bg-card);
}
.code-copy.copied {
  color: var(--accent-3);
  border-color: var(--accent-3);
  opacity: 1;
}

/* ── TOC active heading ───────────────────────────────────────────── */
.toc #TableOfContents a.toc-active {
  color: var(--accent-l);
  font-weight: 500;
}

/* ── Nav link hover underline ─────────────────────────────────────── */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 13px;
  right: 13px;
  height: 1px;
  background: var(--accent-l);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--t);
}
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }

/* ── Tag scale on hover ───────────────────────────────────────────── */
.tag-item {
  transition: all var(--t);
}
.tag-item:hover {
  transform: scale(1.04);
}

/* ── Section title animated underline ────────────────────────────── */
.section-title {
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent-l);
  border-radius: 1px;
}

/* ── Hero cat link polish ─────────────────────────────────────────── */
.hero-cat-link {
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}
.hero-cat-link:hover {
  color: var(--text);
  border-bottom-color: var(--border-s);
}

/* ── Card body link underline on card hover ───────────────────────── */
.post-card:hover .card-title {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(167, 139, 250, 0.4);
}

/* ── Footer polish ────────────────────────────────────────────────── */
.site-footer {
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-l), transparent);
}

/* ── Smooth image zoom on card hover ─────────────────────────────── */
.post-card:hover .card-media img {
  transform: scale(1.06);
}

/* ── Friends / Links page ─────────────────────────────────────────── */
.friends-section { padding-block: 0 80px; }

.friends-tip {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.friends-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 64px;
}

.friend-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
  position: relative;
}
.friend-card:hover {
  border-color: var(--border-s);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.friend-avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-2);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
}
.friend-avatar img { width: 100%; height: 100%; object-fit: cover; }
.friend-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--accent-l);
}
.friend-avatar-placeholder svg {
  width: 52%;
  height: 52%;
}

.friend-info { flex: 1; min-width: 0; }
.friend-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.friend-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 6px;
}
.friend-url {
  font-size: 11px;
  color: var(--accent-l);
  font-family: var(--f-mono);
  opacity: 0.65;
}

.friend-arrow {
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--t), transform var(--t);
  flex-shrink: 0;
}
.friend-card:hover .friend-arrow { opacity: 0.6; transform: translateX(3px); }

.friends-empty {
  font-size: 14px;
  color: var(--text-muted);
  padding: 40px;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: var(--r);
}

.friends-apply {
  border-top: 1px solid var(--border);
  padding-top: 40px;
  max-width: 560px;
}
.friends-apply-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}
.friends-apply-desc {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 10px;
}
.friends-apply-list {
  font-size: 14px;
  color: var(--text-muted);
  padding-left: 20px;
  line-height: 2;
  margin-bottom: 14px;
}
.friends-apply-contact {
  font-size: 13px;
  color: var(--text-muted);
}
.friends-apply-contact a {
  color: var(--accent-l);
  text-decoration: none;
}
.friends-apply-contact a:hover { text-decoration: underline; }

/* ── Responsive adjustments for enhancements ─────────────────────── */
@media (max-width: 768px) {
  .hero-orb-1 { width: 320px; height: 320px; }
  .hero-orb-2 { width: 240px; height: 240px; }
  .hero-orb-3 { display: none; }
  .hero-scroll-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .main { animation: none; }
  .hero-orb { animation: none; }
  .hero-scroll-hint { animation: none; }
  body.animate-cards .post-card { opacity: 1 !important; transform: none !important; }
  .hero-label, .hero-title, .hero-subtitle, .hero-actions, .hero-categories { animation: none !important; }
}

/* =====================================================================
   Premium polish layer
   ===================================================================== */

/* ── FOUC prevention ──────────────────────────────────────────────── */
.lc-no-trans *, .lc-no-trans *::before, .lc-no-trans *::after {
  transition: none !important;
  animation-duration: 1ms !important;
}

/* ── Text selection ───────────────────────────────────────────────── */
::selection {
  background: rgba(124, 58, 237, 0.22);
  color: inherit;
}

/* ── Custom scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb {
  background: var(--border-s);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-l); }

/* ── Focus ring — visible only for keyboard navigation ───────────── */
:focus-visible {
  outline: 2px solid var(--accent-l);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}
:focus:not(:focus-visible) { outline: none; }

/* ── Button active press micro-animation ─────────────────────────── */
.btn:active { transform: scale(0.97) !important; }
.nav-btn:active, .view-btn:active, .tt-btn:active { transform: scale(0.92) !important; }

/* ── Hero film-grain texture ─────────────────────────────────────── */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='250' height='250'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.80' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='250' height='250' filter='url(%23g)' opacity='0.10'/%3E%3C/svg%3E");
  background-size: 250px 250px;
  mix-blend-mode: overlay;
}

/* ── Hero element entrance animations (staggered fadeUp) ────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}
.hero-label    { animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.12s backwards; }
.hero-title    { animation: fadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.22s backwards; }
.hero-subtitle { animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.32s backwards; }
.hero-actions  { animation: fadeUp 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.42s backwards; }
.hero-categories { animation: fadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.27s backwards; }

/* ── Article header rule ─────────────────────────────────────────── */
.post-header-rule {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-l), transparent);
  border-radius: 1px;
  margin: 28px auto 0;
}

/* ── Title translation widget ────────────────────────────────────── */
.title-translate {
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.tt-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.tt-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--f-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.tt-sep {
  width: 1px;
  height: 14px;
  background: var(--border-s);
  margin: 0 2px;
  flex-shrink: 0;
}

.tt-btns { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }

.tt-btn {
  padding: 5px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: transparent;
  font-family: var(--f-sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--t);
  letter-spacing: 0.04em;
}
.tt-btn:hover {
  border-color: var(--border-s);
  color: var(--text);
  background: var(--border);
}
.tt-btn.active {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent-l);
}

.tt-result {
  font-family: var(--f-serif);
  font-size: clamp(18px, 2.8vw, 34px);
  font-weight: 600;
  color: var(--text-2);
  text-align: center;
  line-height: 1.3;
  letter-spacing: 0.01em;
  transition: opacity 0.3s ease;
  min-height: 0;
}
.tt-result:empty { display: none; }
.tt-loading { opacity: 0.45; font-style: italic; font-size: 15px; font-family: var(--f-sans); }
.tt-error   { font-size: 13px; font-family: var(--f-sans); color: var(--text-muted); }

/* ── Code block accent line ──────────────────────────────────────── */
.post-content pre {
  border-left: 3px solid var(--accent);
}

/* ── List hero split responsive fix ──────────────────────────────── */
@media (max-width: 900px) {
  .list-hero-inner--split {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .list-hero-cats { justify-self: start; }
}

/* ── Self-hosting: ensure images never overflow ───────────────────── */
.post-content img,
.post-cover-full {
  max-width: 100%;
  height: auto;
}

/* ── Posts grid 3-column variant (related posts) ─────────────────── */
.posts-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 768px) {
  .posts-grid--3 { grid-template-columns: 1fr; }
}

/* ── Improved empty state ─────────────────────────────────────────── */
.empty-state {
  border: 1px dashed var(--border-s);
  border-radius: var(--r);
  background: var(--bg-card);
}

/* ── Pagination active refinement ────────────────────────────────── */
.page-link.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* ── Card body gap tighten for compact feel ──────────────────────── */
.card-body { gap: 6px; }

/* ── Responsive: 900px breakpoint for blog sidebar ───────────────── */
@media (max-width: 900px) {
  .blog-layout { grid-template-columns: 1fr; gap: 20px; }
  .blog-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 20px;
  }
  .sidebar-heading { display: none; }
  .posts-grid--blog { grid-template-columns: repeat(2, 1fr); }
}

/* ═══════════════════════════════════════════════════════════════════
   Article Tree Section
   ═══════════════════════════════════════════════════════════════════ */

/* Section */
.ptree-section {
  padding: 110px 0 130px;
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
}

/* Faint grid pattern background */
.ptree-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
}

/* Section header */
.ptree-hd {
  text-align: center;
  margin-bottom: 72px;
  position: relative;
}

.ptree-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-l);
  margin-bottom: 12px;
}

.ptree-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 14px;
  background: linear-gradient(135deg, var(--text) 40%, var(--accent-l));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ptree-desc {
  font-size: 15px;
  color: var(--text-2);
}

/* ── Desktop tree (hidden on mobile) ──────────────────────────────── */

.ptree {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  overflow-y: visible;
  padding: 20px 4px;
  -webkit-overflow-scrolling: touch;
  position: relative;
  /* Mask edges for scroll hint */
  -webkit-mask-image: linear-gradient(90deg, transparent, black 20px, black calc(100% - 20px), transparent);
          mask-image: linear-gradient(90deg, transparent, black 20px, black calc(100% - 20px), transparent);
}

.ptree-mobile { display: none; }

/* ── Shared node base ─────────────────────────────────────────────── */
.ptree-node {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
  /* Pre-grow: invisible and shifted left */
  opacity: 0;
  transform: translateX(-8px) scale(0.88);
  transition:
    opacity    0.4s cubic-bezier(0.34, 1.56, 0.64, 1) var(--d, 0ms),
    transform  0.4s cubic-bezier(0.34, 1.56, 0.64, 1) var(--d, 0ms),
    background 0.2s ease,
    color      0.2s ease,
    border-color 0.2s ease;
}
.ptree.grown .ptree-node {
  opacity: 1;
  transform: none;
}

/* Root node */
.ptree-root-node {
  padding: 0 22px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 4px 24px rgba(124, 58, 237, 0.35);
}

/* Category node */
.ptree-cat-node {
  height: 38px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--bclr);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 2px 12px color-mix(in srgb, var(--bclr) 35%, transparent);
}

/* Article node */
.ptree-art-node {
  height: 34px;
  padding: 0 14px;
  border-radius: 7px;
  border: 1.5px solid color-mix(in srgb, var(--bclr) 60%, transparent);
  color: var(--text);
  max-width: 230px;
  overflow: hidden;
}
.ptree-art-node:hover {
  background: color-mix(in srgb, var(--bclr) 10%, transparent);
  color: var(--bclr);
  border-color: var(--bclr);
}
.ptree-art-title {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 13px;
  font-weight: 500;
}
.ptree-art-date {
  font-size: 11px;
  opacity: 0.4;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  margin-left: 8px;
}

/* ── Connectors (horizontal lines) ───────────────────────────────── */
.ptree-conn {
  height: 2px;
  flex-shrink: 0;
  background: var(--bclr, var(--border-s));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1) var(--d, 0ms);
}
.ptree.grown .ptree-conn { transform: scaleX(1); }

.ptree-conn-main   { width: 56px; background: var(--border-s); }
.ptree-conn-branch { width: 48px; }
.ptree-conn-sub    { width: 40px; }
.ptree-conn-art    { width: 36px; }

/* ── Vertical spines ──────────────────────────────────────────────── */
.ptree-spine {
  position: absolute;
  left: 0;
  width: 2px;
  background: var(--bclr, var(--border-s));
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) var(--d, 0ms);
}
.ptree.grown .ptree-spine { transform: scaleY(1); }

/* Main spine: spans from center of first cat to center of last cat.
   With 3-art branches: branch height ≈ 122px, center = 61px */
.ptree-spine-main {
  top: 61px;
  bottom: 61px;
  background: var(--border-s);
}

/* Art sub-spine: art node height = 34px → center = 17px */
.ptree-spine-art {
  top: 17px;
  bottom: 17px;
}

/* ── Root column ──────────────────────────────────────────────────── */
.ptree-root-col { flex-shrink: 0; }

/* ── Branches column ──────────────────────────────────────────────── */
.ptree-branches {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 28px;
  flex-shrink: 0;
}

/* ── Single branch row ────────────────────────────────────────────── */
.ptree-branch {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

/* ── Articles column ──────────────────────────────────────────────── */
.ptree-arts {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}

/* Article row */
.ptree-art-row {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

/* ── CTA ──────────────────────────────────────────────────────────── */
.ptree-cta {
  margin-top: 64px;
  text-align: center;
  position: relative;
}

/* ── Mobile layout (< 640px) ─────────────────────────────────────── */
@media (max-width: 640px) {
  .ptree { display: none; }
  .ptree-mobile {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: relative;
  }

  .ptree-m-cat {
    border-left: 3px solid var(--bclr);
    padding-left: 18px;
    padding-block: 4px;
  }

  .ptree-m-cat-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--bclr);
    margin-bottom: 10px;
  }

  .ptree-m-arts {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .ptree-m-arts li {
    position: relative;
    padding-left: 14px;
  }

  .ptree-m-arts li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 8px;
    height: 1.5px;
    background: var(--bclr);
    opacity: 0.55;
  }

  .ptree-m-arts a {
    font-size: 14px;
    color: var(--text-2);
    transition: color var(--t);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    max-width: 100%;
  }

  .ptree-m-arts a:hover { color: var(--bclr); }
}

/* ═══════════════════════════════════════════════════════════════════
   Life Tree Section — vertical growing timeline
   ═══════════════════════════════════════════════════════════════════ */

/* Section */
.ltree-section {
  padding: 120px 0 60px;
  position: relative;
  /* No overflow:hidden here — that would clip items near section top.
     Orbs are clipped by their own wrapper below. */
  background: var(--bg);
}

/* ── Ambient orb wrapper: clips orbs without affecting section children */
.ltree-orb-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

/* ── Ambient orbs (底部光影效果) ──────────────────────────────────── */
.ltree-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  pointer-events: none;
}
.ltree-orb-1 {
  width: 640px; height: 640px;
  bottom: -220px; left: -160px;
  background: var(--accent);
  opacity: 0.08;
  animation: ltOrb1 24s ease-in-out infinite alternate;
}
.ltree-orb-2 {
  width: 520px; height: 520px;
  bottom: -140px; right: -140px;
  background: #ec4899;
  opacity: 0.06;
  animation: ltOrb2 30s ease-in-out infinite alternate;
}
.ltree-orb-3 {
  width: 320px; height: 320px;
  top: 25%; left: 50%;
  background: var(--accent-3);
  opacity: 0.04;
  animation: ltOrb3 20s ease-in-out infinite alternate;
}
@keyframes ltOrb1 { to { transform: translate(70px, -50px) scale(1.1); } }
@keyframes ltOrb2 { to { transform: translate(-60px, -35px) scale(1.08); } }
@keyframes ltOrb3 { from { transform: translateX(-50%); } to { transform: translateX(-50%) translateY(40px) scale(1.12); } }

/* ── Section header ───────────────────────────────────────────────── */
.ltree-hd {
  text-align: center;
  margin-bottom: 88px;
  position: relative;
  z-index: 1;
}
.ltree-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-l);
  margin-bottom: 16px;
}
.ltree-title {
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent-l) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ltree-subtitle {
  font-size: 15px;
  color: var(--text-2);
}

/* ── Tree container ───────────────────────────────────────────────── */
.ltree {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 0 40px;
  z-index: 1;
}

/* ── Central trunk ────────────────────────────────────────────────── */
.ltree-trunk-wrap {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  pointer-events: none;
}
.ltree-trunk {
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to top,
    var(--accent) 0%,
    var(--accent-l) 50%,
    color-mix(in srgb, var(--accent-l) 30%, transparent) 90%,
    transparent 100%
  );
  opacity: 0.35;
  transform: scaleY(0);
  transform-origin: bottom center;
  transition: transform 1.8s cubic-bezier(0.22, 1, 0.36, 1) 0.1s;
}
.ltree.grown .ltree-trunk { transform: scaleY(1); }

/* ── Crown (newest / top of tree) ────────────────────────────────── */
.ltree-crown {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding-bottom: 28px;
  color: var(--accent-l);
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.7s ease 1.6s, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) 1.6s;
}
.ltree.grown .ltree-crown { opacity: 1; transform: none; }
.ltree-crown span {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.55;
}

/* ── Article items ────────────────────────────────────────────────── */
.ltree-item {
  position: relative;
  width: 50%;
  padding-bottom: 44px;
  z-index: 1;
}
.ltree-item--left  { padding-right: 56px; }
.ltree-item--right { margin-left: 50%; padding-left: 56px; }

/* ── Branch line (grows from trunk outward) ───────────────────────── */
.ltree-branch-line {
  position: absolute;
  top: 30px;
  height: 2px;
  width: 56px;
  background: var(--clr, var(--border-s));
  opacity: 0.55;
  transform: scaleX(0);
  transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.ltree-item--left  .ltree-branch-line { right: 0; transform-origin: right center; }
.ltree-item--right .ltree-branch-line { left:  0; transform-origin: left  center; }
.ltree-item.branched .ltree-branch-line { transform: scaleX(1); }

/* Dot on trunk */
.ltree-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--clr, var(--accent));
  border: 2.5px solid var(--bg);
  box-shadow: 0 0 10px color-mix(in srgb, var(--clr, var(--accent)) 55%, transparent);
  top: 24px;
  z-index: 3;
  opacity: 0;
  transform: scale(0);
  transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.ltree-item--left  .ltree-dot { right: -6px; }
.ltree-item--right .ltree-dot { left:  -6px; }
.ltree-item.branched .ltree-dot { opacity: 1; transform: scale(1); }

/* ── Article card ─────────────────────────────────────────────────── */
.ltree-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
  opacity: 0;
  transform: translateY(18px) scale(0.94);
  transition:
    opacity   0.85s ease,
    transform 0.95s cubic-bezier(0.22, 1, 0.36, 1),
    border-color var(--t),
    box-shadow   var(--t);
}
.ltree-item--left  .ltree-card { border-right: 3px solid var(--clr, var(--accent)); }
.ltree-item--right .ltree-card { border-left:  3px solid var(--clr, var(--accent)); }

/* Card reveal — JS setTimeout provides the branch-first delay */
.ltree-item.fruited .ltree-card {
  opacity: 1;
  transform: none;
}

/* After reveal completes, restore fast hover transitions */
.ltree-item--done .ltree-card {
  opacity: 1;
  transform: none;
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
  transition-delay: 0s;
}
.ltree-item--done .ltree-card:hover {
  border-color: color-mix(in srgb, var(--clr, var(--accent)) 45%, var(--border));
  box-shadow: 0 6px 28px color-mix(in srgb, var(--clr, var(--accent)) 14%, transparent);
  transform: translateY(-2px);
}

.ltree-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.ltree-card-date {
  font-size: 11px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}
.ltree-card-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 2px 7px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--clr, var(--accent)) 14%, transparent);
  color: var(--clr, var(--accent-l));
}
.ltree-card-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 5px;
}
.ltree-card-title a {
  color: var(--text);
  transition: color var(--t);
}
.ltree-card-title a:hover { color: var(--clr, var(--accent-l)); }

.ltree-card-desc {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ltree-card-desc--protected {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  font-style: italic;
  font-size: 12px;
  -webkit-line-clamp: unset;
  overflow: visible;
}

/* ── Root marker (起点 / scroll target) ──────────────────────────── */
.ltree-root-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 4px;
  opacity: 0.55;
}

.ltree-root-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent-l) 55%, transparent);
  box-shadow: 0 0 18px var(--accent-glow);
  animation: rootPulse 2.4s ease-in-out infinite;
}
@keyframes rootPulse {
  0%, 100% { box-shadow: 0 0 12px var(--accent-glow); }
  50% { box-shadow: 0 0 28px var(--accent-glow), 0 0 6px color-mix(in srgb, var(--accent-l) 30%, transparent); }
}

.ltree-root-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

/* ── CTA ──────────────────────────────────────────────────────────── */
.ltree-cta {
  text-align: center;
  margin-top: 28px;
  position: relative;
  z-index: 1;
}
.ltree-cta-hint {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.07em;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  animation: hintFloat 2.2s ease-in-out infinite;
  user-select: none;
}
@keyframes hintFloat {
  0%, 100% { transform: translateY(0);    opacity: 0.55; }
  50%       { transform: translateY(-5px); opacity: 0.85; }
}

/* ── Mobile: single column ────────────────────────────────────────── */
@media (max-width: 640px) {
  .ltree-trunk-wrap { left: 14px; }

  .ltree-item--left,
  .ltree-item--right {
    width: 100%;
    margin-left: 0;
    padding-right: 0;
    padding-left: 42px;
  }

  .ltree-item--left .ltree-dot,
  .ltree-item--right .ltree-dot {
    right: auto;
    left: 9px; /* center = 9 + 6 = 15px = trunk center (trunk-wrap left:14px + 1px half-width) */
  }

  .ltree-item--left .ltree-branch-line,
  .ltree-item--right .ltree-branch-line {
    right: auto;
    left: 14px;  /* start at trunk */
    width: 28px; /* trunk(15px) → card padding edge(42px) */
    transform-origin: left center;
  }

  .ltree-item--left .ltree-card {
    border-right: 1px solid var(--border);
    border-left: 3px solid var(--clr, var(--accent));
  }

  .ltree-crown,
  .ltree-root-mark { margin-left: 14px; align-items: flex-start; }
}

/* ── Locked state: entire section collapsed until button click ─────── */
.ltree-section:not(.tree-unlocked) {
  max-height: 0;
  overflow: hidden; /* must be explicit here since base no longer has it */
  padding: 0;
}

/* ═══════════════════════════════════════════════════════════════════
   Protected Article — 2FA Modal  (glass morphism, dark + light)
   ═══════════════════════════════════════════════════════════════════ */

/* Overlay (full-screen fixed, centers the modal card) */
.prot-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
/* The [hidden] reset at top-of-file already handles display:none */

/* Blurred backdrop */
.prot-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Glass modal card — unified with rc-modal */
.prot-modal {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  padding: 44px 40px 36px;
  border-radius: 28px;
  /* Dark glass — matches rc-modal */
  background: rgba(12, 11, 24, 0.94);
  backdrop-filter: blur(48px) saturate(180%);
  -webkit-backdrop-filter: blur(48px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.75),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  /* Entrance animation */
  transform: translateY(22px) scale(0.96);
  opacity: 0;
  transition: transform 0.40s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.24s ease;
}
.prot-visible .prot-modal {
  transform: translateY(0) scale(1);
  opacity: 1;
}
/* Light-mode glass */
[data-theme="light"] .prot-modal {
  background: rgba(250, 249, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.14),
    0 0 0 1px rgba(255, 255, 255, 0.85) inset;
}

/* ── Shield with pulsing ring (unified with rc-shield-wrap) ───────── */
.prot-shield-wrap {
  position: relative;
  width: 80px; height: 80px;
  margin: 0 auto 22px;
  display: flex; align-items: center; justify-content: center;
}
.prot-shield-svg {
  position: relative; z-index: 1;
  color: var(--accent);
  filter: drop-shadow(0 0 14px rgba(124, 58, 237, 0.50));
}
.prot-shield-ring {
  position: absolute; inset: -4px;
  border-radius: 50%;
  border: 1.5px solid rgba(124, 58, 237, 0.35);
  animation: prot-ring-pulse 2.4s ease-in-out infinite;
}
@keyframes prot-ring-pulse {
  0%, 100% { transform: scale(1);    opacity: 0.7; }
  50%       { transform: scale(1.14); opacity: 0.20; }
}

/* ── Hint box (static info, replaces authenticator card) ─────────── */
.prot-hint-box {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 14px; border-radius: 10px;
  border: 1px dashed rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-size: 13px; line-height: 1.65;
  margin-bottom: 10px;
}
.prot-hint-box svg { flex-shrink: 0; margin-top: 1px; }
.prot-hint-box p { margin: 0; }
[data-theme="light"] .prot-hint-box {
  border-color: rgba(0, 0, 0, 0.12);
  background: rgba(0, 0, 0, 0.03);
}

/* ── Titles (unified with rc-modal) ──────────────────────────────── */
.prot-title {
  font-size: 24px; font-weight: 700; letter-spacing: -0.025em;
  text-align: center; color: var(--text); margin-bottom: 10px;
}
.prot-subtitle {
  font-size: 14px; color: var(--text-2); line-height: 1.7;
  text-align: center; margin-bottom: 24px;
}

/* ── OTP digit inputs ─────────────────────────────────────────────── */
.prot-otp {
  display: flex; gap: 8px; justify-content: center; margin-bottom: 10px;
}
.prot-digit {
  width: 48px; height: 58px;
  border-radius: 10px;
  border: 1.5px solid var(--border-s);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 22px; font-weight: 500; text-align: center;
  font-family: var(--f-mono);
  outline: none; caret-color: transparent;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}
[data-theme="light"] .prot-digit {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.13);
}
.prot-digit:focus {
  border-color: var(--accent);
  background: rgba(124, 58, 237, 0.07);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.18);
}
.prot-digit--error {
  border-color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.08) !important;
  animation: prot-shake 0.36s ease;
}
@keyframes prot-shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-4px); }
  40%       { transform: translateX(4px); }
  60%       { transform: translateX(-3px); }
  80%       { transform: translateX(3px); }
}

/* Error text */
.prot-error {
  font-size: 13px; color: #ef4444;
  text-align: center; margin-bottom: 6px;
}

/* ── Divider ──────────────────────────────────────────────────────── */
.prot-divider {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-muted); font-size: 12px;
  margin: 18px 0 14px;
}
.prot-divider::before,
.prot-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ── Method cards ─────────────────────────────────────────────────── */
.prot-methods { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }

.prot-method {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  text-decoration: none; color: inherit;
}
.prot-method:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-s);
}
[data-theme="light"] .prot-method { background: rgba(0, 0, 0, 0.03); }
[data-theme="light"] .prot-method:hover { background: rgba(0, 0, 0, 0.06); }

.prot-method-icon {
  width: 36px; height: 36px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.prot-method-icon--auth { background: rgba(99, 102, 241, 0.18); color: #818cf8; }
.prot-method-icon--tg   { background: rgba(0, 136, 204, 0.18); color: #29b6f6; }
[data-theme="light"] .prot-method-icon--auth { background: rgba(99, 102, 241, 0.10); }
[data-theme="light"] .prot-method-icon--tg   { background: rgba(0, 136, 204, 0.10); }

.prot-method-text { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.prot-method-text strong { font-size: 13.5px; font-weight: 600; color: var(--text); }
.prot-method-text span   { font-size: 11.5px; color: var(--text-2); line-height: 1.5; }
.prot-method-arrow       { color: var(--text-muted); flex-shrink: 0; }

/* ── 30-day trust ─────────────────────────────────────────────────── */
.prot-trust {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-2);
  margin-bottom: 16px; cursor: pointer; user-select: none;
}
.prot-trust input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--accent); cursor: pointer; flex-shrink: 0;
}
.prot-trust-info {
  width: 16px; height: 16px; border-radius: 50%;
  border: 1px solid var(--border-s);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--text-muted);
  cursor: help; flex-shrink: 0; font-style: normal;
}

/* ── Verify button ────────────────────────────────────────────────── */
.prot-verify-btn {
  width: 100%; padding: 14px;
  border-radius: 12px; border: none;
  background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
  color: #fff; font-size: 15px; font-weight: 600;
  cursor: pointer; letter-spacing: -0.01em;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.40);
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
  margin-bottom: 14px; font-family: var(--f-sans);
}
.prot-verify-btn:hover {
  opacity: 0.88;
  box-shadow: 0 6px 28px rgba(124, 58, 237, 0.55);
  transform: translateY(-1px);
}
.prot-verify-btn:active { transform: translateY(0); }
.prot-verify-btn:disabled {
  opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none;
}

/* Fallback link */
.prot-fallback {
  display: block; text-align: center; font-size: 13px;
  color: var(--accent-l); text-decoration: none;
}
.prot-fallback:hover { text-decoration: underline; }

/* ── Lock badge in article post-info ─────────────────────────────── */
.prot-badge { color: var(--accent-l); }

/* ── Lock icon overlay on post cards ─────────────────────────────── */
.card-lock {
  position: absolute; top: 10px; right: 10px; z-index: 3;
  width: 26px; height: 26px; border-radius: 50%;
  background: rgba(0, 0, 0, 0.58);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255, 255, 255, 0.88);
  pointer-events: none;
}
[data-theme="light"] .card-lock {
  background: rgba(255, 255, 255, 0.80);
  color: var(--text-2);
}

/* "加密" tag in card meta */
.card-protected-tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; color: var(--accent-l);
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.22);
  border-radius: 20px; padding: 2px 8px;
}
[data-theme="light"] .card-protected-tag {
  background: rgba(124, 58, 237, 0.07);
}

/* ── Locked page placeholder (single page before verification) ───── */
.prot-page-placeholder {
  min-height: 260px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px; color: var(--text-muted);
  text-align: center; padding: 60px 20px;
}
.prot-page-placeholder svg { opacity: 0.40; }
.prot-page-placeholder p {
  font-size: 17px; font-weight: 500; color: var(--text-2);
  max-width: 280px; line-height: 1.65;
}
.prot-placeholder-sub {
  font-size: 14px !important; font-weight: 400 !important;
  color: var(--text-muted) !important;
}

/* ── Responsive: narrow screens ───────────────────────────────────── */
@media (max-width: 480px) {
  .prot-modal { padding: 32px 22px 26px; }
  .prot-digit { width: 42px; height: 52px; font-size: 20px; }
  .prot-otp   { gap: 6px; }
}

/* ═══════════════════════════════════════════════════════════════════
   Right-click Protection Modal  (NZ law warning)
   ═══════════════════════════════════════════════════════════════════ */

.rc-overlay {
  position: fixed; inset: 0; z-index: 9100;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.rc-backdrop {
  position: absolute; inset: 0;
  background: rgba(0, 0, 0, 0.60);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.rc-modal {
  position: relative; z-index: 1;
  width: 100%; max-width: 520px;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  padding: 44px 40px 36px;
  border-radius: 28px;
  background: rgba(12, 11, 24, 0.94);
  backdrop-filter: blur(48px) saturate(180%);
  -webkit-backdrop-filter: blur(48px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.75),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  transform: translateY(24px) scale(0.96);
  opacity: 0;
  transition: transform 0.38s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.24s ease;
}
.rc-visible .rc-modal {
  transform: translateY(0) scale(1);
  opacity: 1;
}
[data-theme="light"] .rc-modal {
  background: rgba(250, 249, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.14), 0 0 0 1px rgba(255,255,255,0.85) inset;
}

/* Shield icon with pulsing ring */
.rc-shield-wrap {
  position: relative;
  width: 80px; height: 80px;
  margin: 0 auto 22px;
  display: flex; align-items: center; justify-content: center;
}
.rc-shield-svg {
  position: relative; z-index: 1;
  color: #22c55e;               /* green shield = "protected" */
  filter: drop-shadow(0 0 14px rgba(34, 197, 94, 0.45));
}
.rc-shield-ring {
  position: absolute; inset: -4px;
  border-radius: 50%;
  border: 1.5px solid rgba(34, 197, 94, 0.30);
  animation: rc-ring-pulse 2.4s ease-in-out infinite;
}
@keyframes rc-ring-pulse {
  0%, 100% { transform: scale(1);    opacity: 0.7; }
  50%       { transform: scale(1.14); opacity: 0.2; }
}

.rc-title {
  font-size: 24px; font-weight: 700; letter-spacing: -0.025em;
  text-align: center; color: var(--text); margin-bottom: 10px;
}
.rc-desc {
  font-size: 14px; color: var(--text-2); line-height: 1.7;
  text-align: center; margin-bottom: 22px;
}
.rc-desc strong { color: var(--text); }

/* ── Law accordion ────────────────────────────────────────────────── */
.rc-law-wrap {
  border: 1px solid var(--border-s);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 24px;
}
.rc-law-toggle {
  width: 100%;
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: none; cursor: pointer;
  color: var(--text-2); font-size: 13.5px; font-family: var(--f-sans);
  transition: background 0.15s;
  text-align: left;
}
.rc-law-toggle:hover { background: rgba(255, 255, 255, 0.08); }
[data-theme="light"] .rc-law-toggle { background: rgba(0,0,0,0.03); }
[data-theme="light"] .rc-law-toggle:hover { background: rgba(0,0,0,0.06); }
.rc-law-toggle span { flex: 1; }
.rc-law-chevron { flex-shrink: 0; transition: transform 0.25s ease; }
.rc-law-toggle[aria-expanded="true"] .rc-law-chevron { transform: rotate(180deg); }

.rc-law-content {
  padding: 0 18px 18px;
  display: flex; flex-direction: column; gap: 18px;
}

.rc-law-block { display: flex; flex-direction: column; gap: 10px; }

.rc-law-block-header {
  display: flex; align-items: center; gap: 8px; padding-top: 14px;
  border-top: 1px solid var(--border);
}
.rc-law-block:first-child .rc-law-block-header { border-top: none; padding-top: 0; }
.rc-law-flag { font-size: 18px; }
.rc-law-block h4 {
  font-size: 13px; font-weight: 700; color: var(--text);
  display: flex; flex-direction: column; gap: 2px;
}
.rc-law-en {
  font-size: 11px; font-weight: 400; color: var(--text-muted); font-style: italic;
}
.rc-law-list { display: flex; flex-direction: column; gap: 10px; padding: 0; margin: 0; }
.rc-law-list dt {
  font-size: 12.5px; font-weight: 700; color: var(--accent-l);
  margin-bottom: -4px;
}
.rc-law-list dd {
  font-size: 12.5px; color: var(--text-2); line-height: 1.7;
  margin: 0;
}
.rc-law-list strong { color: var(--text); }
.rc-law-note {
  font-size: 11.5px; color: var(--text-muted); line-height: 1.65;
  padding-top: 12px; border-top: 1px solid var(--border);
}
.rc-law-note a { color: var(--accent-l); text-decoration: underline; }

/* ── Accept button ────────────────────────────────────────────────── */
.rc-accept-btn {
  width: 100%; padding: 14px;
  border-radius: 12px; border: none;
  background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
  color: #fff; font-size: 15px; font-weight: 600;
  cursor: pointer; letter-spacing: -0.01em;
  box-shadow: 0 4px 20px rgba(22, 163, 74, 0.38);
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--f-sans);
}
.rc-accept-btn:hover {
  opacity: 0.88;
  box-shadow: 0 6px 28px rgba(22, 163, 74, 0.52);
  transform: translateY(-1px);
}
.rc-accept-btn:active { transform: translateY(0); }

/* ── Reject / return-home button ─────────────────────────────────── */
.rc-reject-btn {
  width: 100%; padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(239, 68, 68, 0.40);
  background: rgba(239, 68, 68, 0.10);
  color: #f87171;
  font-size: 14px; font-weight: 600;
  cursor: pointer; letter-spacing: -0.01em;
  margin-top: 10px;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--f-sans);
}
.rc-reject-btn:hover {
  background: rgba(239, 68, 68, 0.18);
  border-color: rgba(239, 68, 68, 0.65);
  color: #fca5a5;
  transform: translateY(-1px);
}
.rc-reject-btn:active { transform: translateY(0); }
[data-theme="light"] .rc-reject-btn {
  background: rgba(239, 68, 68, 0.07);
  border-color: rgba(239, 68, 68, 0.30);
  color: #dc2626;
}
[data-theme="light"] .rc-reject-btn:hover {
  background: rgba(239, 68, 68, 0.13);
  border-color: rgba(239, 68, 68, 0.55);
}

/* Scrollbar in modal */
.rc-modal::-webkit-scrollbar { width: 4px; }
.rc-modal::-webkit-scrollbar-track { background: transparent; }
.rc-modal::-webkit-scrollbar-thumb { background: var(--border-s); border-radius: 2px; }

/* Responsive */
@media (max-width: 480px) {
  .rc-modal { padding: 32px 22px 28px; }
}

/* ═══════════════════════════════════════════════════════════════════
   Floating TOC  (appears when inline TOC scrolls out of view)
   ═══════════════════════════════════════════════════════════════════ */

/* Container: houses both button (right) and panel (left) */
#toc-float { pointer-events: none; }

/* ── Trigger button (fixed RIGHT side) ───────────────────────────── */
.toc-float-btn {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 450;
  pointer-events: auto;

  display: flex; flex-direction: column;
  align-items: center; gap: 6px;
  padding: 14px 10px;
  border-radius: 40px;
  border: 1px solid var(--border-s);
  background: var(--bg-card);
  color: var(--text-2);
  cursor: pointer; font-size: 11px;
  font-family: var(--f-sans); letter-spacing: 0.04em;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s, color 0.2s;

  /* Entrance animation */
  opacity: 0;
  animation: toc-btn-in 0.3s ease forwards;
}
@keyframes toc-btn-in {
  from { opacity: 0; transform: translateY(-50%) translateX(12px); }
  to   { opacity: 1; transform: translateY(-50%) translateX(0); }
}
.toc-float-btn:hover,
.toc-float-btn[aria-expanded="true"] {
  background: var(--bg-card-h);
  border-color: var(--accent);
  color: var(--accent-l);
  box-shadow: 0 4px 24px rgba(124, 58, 237, 0.22);
}
[data-theme="light"] .toc-float-btn { box-shadow: 0 4px 16px rgba(0,0,0,0.12); }

/* ── Panel: slides in from LEFT side ─────────────────────────────── */
.toc-float-panel {
  position: fixed;
  left: 0;
  top: var(--nav-h);
  bottom: 0;
  width: 280px;
  z-index: 449;
  pointer-events: auto;
  overflow-y: auto;
  background: var(--bg-card);
  border-right: 1px solid var(--border-s);
  border-top: 1px solid var(--border);
  box-shadow: 4px 0 32px rgba(0, 0, 0, 0.35);
  padding: 20px 22px 32px;

  /* Slide in from left */
  transform: translateX(-100%);
  opacity: 0;
  transition: transform 0.30s cubic-bezier(0.22, 1, 0.36, 1),
              opacity 0.24s ease;
}
.toc-float-panel:not([hidden]) {
  transform: translateX(0);
  opacity: 1;
}
[data-theme="light"] .toc-float-panel { box-shadow: 4px 0 24px rgba(0,0,0,0.10); }

.toc-float-panel::-webkit-scrollbar { width: 3px; }
.toc-float-panel::-webkit-scrollbar-track { background: transparent; }
.toc-float-panel::-webkit-scrollbar-thumb { background: var(--border-s); border-radius: 2px; }

/* Panel header */
.toc-float-panel-hd {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.toc-float-panel-hd .toc-title { margin-bottom: 0; }
.toc-float-close {
  width: 28px; height: 28px; border-radius: 50%;
  border: none; background: transparent; cursor: pointer;
  color: var(--text-muted); display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.toc-float-close:hover { background: var(--border-s); color: var(--text); }

/* Inherit toc link styling inside panel */
.toc-float-panel .toc-title { font-family: var(--f-sans); }
.toc-float-panel #TableOfContents ul   { list-style: none; padding: 0; margin: 0; }
.toc-float-panel #TableOfContents ul ul{ padding-left: 14px; margin-top: 4px; }
.toc-float-panel #TableOfContents li   { margin-bottom: 4px; }
.toc-float-panel #TableOfContents a {
  font-size: 13.5px; color: var(--text-2);
  text-decoration: none; line-height: 1.55;
  transition: color var(--t);
  display: block;
}
.toc-float-panel #TableOfContents a:hover { color: var(--accent-l); }
.toc-float-panel #TableOfContents a.toc-active { color: var(--accent-l); font-weight: 500; }

/* Scrim: shown behind panel on mobile */
.toc-float-scrim {
  display: none;
  position: fixed; inset: 0; z-index: 448;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

/* ── Mobile: semi-ellipse edge tab + bottom-sheet panel ─────────── */
@media (max-width: 900px) {
  .toc-float-scrim { display: block; }

  /* Right-edge "半椭圆" tab, stacked above scroll-to-top button */
  .toc-float-btn {
    /* Reset desktop vertical-center position */
    top: auto;
    transform: none;
    /* Stick to right edge, above scroll-to-top (28+44+12=84) */
    right: 0;
    bottom: 84px;
    /* Horizontal pill, flat on right / rounded on left */
    flex-direction: row;
    gap: 7px;
    padding: 9px 13px 9px 15px;
    border-radius: 24px 0 0 24px;
    border-right: none;
    font-size: 12px;
    letter-spacing: 0.04em;
    box-shadow: -3px 2px 18px rgba(0, 0, 0, 0.32);
    /* Slide in from right edge */
    animation: toc-mob-in 0.28s ease forwards;
  }
  @keyframes toc-mob-in {
    from { opacity: 0; transform: translateX(24px); }
    to   { opacity: 1; transform: translateX(0); }
  }

  /* Bottom sheet: slides up from the bottom */
  .toc-float-panel {
    left: 0; right: 0;
    top: auto; bottom: 0;
    width: 100%;
    max-height: 62vh;
    border-radius: 20px 20px 0 0;
    border-right: none;
    border-top: 1px solid var(--border-s);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.38);
    padding: 0 22px 36px;
    /* Override desktop left-slide with bottom-slide */
    transform: translateY(100%) !important;
    transition: transform 0.30s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.24s ease;
  }
  .toc-float-panel:not([hidden]) {
    transform: translateY(0) !important;
    opacity: 1;
  }
  /* Bottom sheet header: drag handle bar */
  .toc-float-panel-hd {
    position: sticky; top: 0;
    padding-top: 12px; padding-bottom: 10px;
    background: var(--bg-card);
    z-index: 1;
  }
  .toc-float-panel-hd::before {
    content: '';
    display: block;
    width: 36px; height: 4px;
    border-radius: 2px;
    background: var(--border-s);
    margin: 0 auto 14px;
  }
}

/* ═══════════════════════════════════════════════════════════════════
   About Page
   ═══════════════════════════════════════════════════════════════════ */

.about-page {
  padding: calc(var(--nav-h) + 56px) 0 96px;
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.about-hero {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 40px;
}

.about-avatar {
  position: relative;
  flex-shrink: 0;
  width: 96px; height: 96px;
  border-radius: 50%;
  background: var(--bg-card);
  overflow: hidden;
}
.about-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}
.about-avatar-ring {
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 2px solid;
  border-color: transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box,
              linear-gradient(135deg, var(--accent), var(--accent-2)) border-box;
  animation: avatarSpin 6s linear infinite;
  opacity: 0.5;
}
@keyframes avatarSpin {
  to { transform: rotate(360deg); }
}

.about-identity { flex: 1; min-width: 0; }
.about-name {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--text) 60%, var(--accent-l));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-handle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-family: var(--f-mono);
}
.about-status { color: var(--accent-l); }
.about-tagline {
  font-size: 1rem;
  color: var(--text-2);
  font-style: italic;
  margin-bottom: 20px;
  line-height: 1.5;
}

/* Social buttons */
.about-socials { display: flex; flex-wrap: wrap; gap: 10px; }
.about-social-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border-s);
  background: var(--bg-card);
  color: var(--text-2);
  transition: var(--t);
  font-family: var(--f-sans);
}
.about-social-btn:hover { background: var(--bg-card-h); color: var(--text); transform: translateY(-1px); }
.about-social-btn--tg   { border-color: rgba(41,182,246,.3); }
.about-social-btn--tg:hover { color: #29b6f6; border-color: rgba(41,182,246,.6); }
.about-social-btn--x    { border-color: var(--border-s); }
.about-social-btn--x:hover { color: var(--text); }
.about-social-btn--mail { border-color: rgba(249,115,22,.3); }
.about-social-btn--mail:hover { color: var(--accent-2); border-color: rgba(249,115,22,.6); }

/* ── Stat chips ───────────────────────────────────────────────────── */
.about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 52px;
}
.about-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-family: var(--f-sans);
}
.about-chip svg { opacity: 0.6; flex-shrink: 0; }

/* ── Sections ─────────────────────────────────────────────────────── */
.about-section {
  margin-bottom: 52px;
}
.about-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.about-section-icon { font-size: 1.1rem; line-height: 1; }

/* ── Story ────────────────────────────────────────────────────────── */
.about-story {
  color: var(--text-2);
  line-height: var(--lh-prose);
  font-size: 0.97rem;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}
.about-story a { color: var(--accent-l); text-decoration: underline; text-decoration-color: transparent; }
.about-story a:hover { text-decoration-color: var(--accent-l); }

.about-quote {
  position: relative;
  padding: 20px 24px 20px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r) var(--r) 0;
  margin: 0;
}
.about-quote p {
  font-style: italic;
  color: var(--text-2);
  font-size: 0.97rem;
  line-height: 1.7;
  margin-bottom: 8px;
}
.about-quote cite {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: normal;
}

/* ── About page TOC host (wraps inline .toc to trigger floating JS) ── */
.about-toc-host {
  max-width: none !important;
  padding: 0 !important;
  margin-bottom: 40px;
}
.about-toc-host .toc { margin: 0; }

/* ── Story meta footer ─────────────────────────────────────────────── */
.about-story-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  line-height: 1.6;
}

/* ── Story chapters ───────────────────────────────────────────────── */
.about-story-chapters {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.about-chapter {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0 28px;
  position: relative;
}

/* Vertical connector line between chapters */
.about-chapter::before {
  content: '';
  position: absolute;
  left: 35px;
  top: 32px;
  bottom: -1px;
  width: 2px;
  background: linear-gradient(to bottom, var(--border-s), var(--border));
}
.about-chapter:last-child::before { display: none; }

/* Chapter marker (year/label) */
.about-chapter-marker {
  position: relative;
  padding-top: 4px;
  text-align: right;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent-l);
  font-family: var(--f-mono);
  white-space: nowrap;
  line-height: 1;
}
/* Dot on the timeline */
.about-chapter-marker::after {
  content: '';
  position: absolute;
  right: -38px;
  top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 8px var(--accent-glow);
}

.about-chapter-body {
  padding: 0 0 36px 10px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.about-chapter-body p {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: var(--lh-prose);
  margin: 0;
}
.about-chapter-body p em {
  color: var(--text);
  font-style: normal;
  font-weight: 600;
}
.about-chapter-body a { color: var(--accent-l); text-decoration: underline; text-decoration-color: transparent; }
.about-chapter-body a:hover { text-decoration-color: var(--accent-l); }

.about-quote--inline {
  margin: 4px 0;
  padding: 16px 20px 16px 22px;
  border-left-width: 3px;
}
.about-quote--inline p { font-size: 0.92rem; margin-bottom: 6px; }
.about-quote--inline cite { font-size: 0.76rem; }

.about-story-coda {
  font-size: 0.88rem !important;
  color: var(--text-muted) !important;
  font-style: italic;
  padding-top: 4px;
}

/* ── Skill grid ───────────────────────────────────────────────────── */
.about-skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.about-skill-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: var(--t);
}
.about-skill-card:hover { border-color: var(--border-s); background: var(--bg-card-h); }
.about-skill-icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--accent-glow);
  border: 1px solid rgba(124,58,237,.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-l);
}
.about-skill-card div:last-child { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.about-skill-card strong { font-size: 0.9rem; font-weight: 600; color: var(--text); line-height: 1.3; }
.about-skill-card span { font-size: 0.78rem; color: var(--text-muted); line-height: 1.4; }

/* ── Interests ────────────────────────────────────────────────────── */
.about-interest-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.about-interest-item {
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: var(--t);
}
.about-interest-item:hover { border-color: var(--border-s); background: var(--bg-card-h); }
.about-interest-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.about-interest-emoji { font-size: 1.2rem; line-height: 1; }
.about-interest-head strong { font-size: 0.9rem; font-weight: 600; color: var(--text); }
.about-interest-item p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; margin: 0; }

/* ── Belief tags ──────────────────────────────────────────────────── */
.about-belief-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.about-belief-tag {
  padding: 7px 16px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--border-s);
  background: var(--bg-card);
  color: var(--text-2);
  transition: var(--t);
}
.about-belief-tag:hover { background: var(--bg-card-h); color: var(--text); }

/* ── Contact card ─────────────────────────────────────────────────── */
.about-contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 32px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-s);
  border-radius: calc(var(--r) * 2);
  position: relative;
  overflow: hidden;
}
.about-contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 10% 50%, var(--accent-glow), transparent);
  pointer-events: none;
}
.about-contact-text { position: relative; z-index: 1; }
.about-contact-text h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; }
.about-contact-text p { font-size: 0.87rem; color: var(--text-2); line-height: 1.5; margin: 0; }
.about-contact-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  flex-shrink: 0;
}

.about-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--t);
  font-family: var(--f-sans);
  white-space: nowrap;
}
.about-cta-btn--primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
}
.about-cta-btn--primary:hover { background: #6d28d9; transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow); }
.about-cta-btn--secondary {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border-s);
}
.about-cta-btn--secondary:hover { background: var(--bg-card-h); color: var(--text); }
.about-cta-btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  font-size: 0.82rem;
}
.about-cta-btn--ghost:hover { color: var(--text-2); border-color: var(--border-s); }

/* ── Friends page apply button ────────────────────────────────────── */
.friends-apply-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 100px;
  border: 1px solid var(--border-s);
  background: var(--bg-card);
  color: var(--text-2);
  font-size: 0.87rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--t);
  font-family: var(--f-sans);
  margin-top: 6px;
}
.friends-apply-btn:hover {
  background: var(--bg-card-h);
  color: var(--accent-l);
  border-color: rgba(124,58,237,.4);
  transform: translateY(-1px);
}

/* ── Mobile ───────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .about-hero { flex-direction: column; align-items: flex-start; gap: 24px; }
  .about-avatar { width: 80px; height: 80px; }
  .about-avatar span { font-size: 22px; }
  .about-name { font-size: 1.6rem; }
  .about-contact-card { flex-direction: column; align-items: flex-start; padding: 24px; }
  .about-skill-grid,
  .about-interest-list { grid-template-columns: 1fr; }

  .about-chapter { grid-template-columns: 52px 1fr; gap: 0 16px; }
  .about-chapter::before { left: 25px; }
  .about-chapter-marker { font-size: 0.66rem; }
  .about-chapter-marker::after { right: -26px; width: 8px; height: 8px; }
  .about-chapter-body { padding-bottom: 28px; padding-left: 4px; }
}