/* ============================================================
   葬AI Web4 — Global Stylesheet
   Dark terminal / cyber aesthetic. Sharp, independent, attitude.
   ============================================================ */

:root {
  --bg:        #08080c;
  --bg-alt:    #0e0e16;
  --surface:   #13131c;
  --surface-2: #1a1a26;
  --border:    #28283a;
  --border-2:  #3a3a52;

  --text:     #d8d8e4;
  --text-dim: #8a8a9e;
  --text-mute:#56566a;

  --primary:    #8b5cf6;
  --primary-dim:#5a3aa0;
  --accent:     #00e5ff;
  --danger:     #ef4444;
  --warn:       #f59e0b;

  --c-product:  #8b5cf6;
  --c-person:   #f59e0b;
  --c-vc:       #10b981;
  --c-company:  #06b6d4;

  --mono: "SF Mono","JetBrains Mono","Fira Code","Cascadia Code",ui-monospace,Menlo,Consolas,monospace;
  --sans: -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","PingFang SC","Hiragino Sans GB",sans-serif;

  --maxw: 1200px;
}

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

html { scroll-behavior:smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* Subtle grid background */
body::before {
  content:'';
  position:fixed; inset:0; z-index:-1;
  background-image:
    linear-gradient(rgba(139,92,246,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,92,246,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events:none;
}

a { color: var(--primary); text-decoration:none; transition:color .15s; }
a:hover { color: var(--accent); }

::selection { background: var(--primary); color:#fff; }

/* ---- Navigation ---- */
.topnav {
  position:sticky; top:0; z-index:100;
  background: rgba(8,8,12,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topnav-inner {
  max-width:var(--maxw); margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 24px; height:56px;
}
.brand {
  font-family:var(--mono); font-weight:700; font-size:16px;
  color:var(--text); letter-spacing:1px;
  display:flex; align-items:center; gap:8px;
}
.brand .blink {
  display:inline-block; width:8px; height:16px;
  background:var(--primary);
  animation:blink 1.1s steps(2) infinite;
}
@keyframes blink { 50%{opacity:0;} }
.nav-links { display:flex; gap:4px; align-items:center; }
.nav-links a {
  font-family:var(--mono); font-size:13px;
  color:var(--text-dim); padding:6px 14px;
  border:1px solid transparent; transition:all .15s;
}
.nav-links a:hover { color:var(--accent); border-color:var(--border-2); }
.nav-links a.active { color:var(--primary); border-color:var(--primary-dim); background:rgba(139,92,246,.08); }

/* ---- Layout ---- */
.container { max-width:var(--maxw); margin:0 auto; padding:0 24px; }
.wrap { padding:48px 0; }

/* ---- Homepage ---- */
.hero {
  min-height:calc(100vh - 57px);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:60px 24px; position:relative;
}
.hero .glitch-title {
  font-family:var(--mono);
  font-size:clamp(40px, 9vw, 88px);
  font-weight:800;
  letter-spacing:4px;
  color:var(--text);
  position:relative;
  text-shadow:0 0 40px rgba(139,92,246,.35);
}
.hero .glitch-title::before,
.hero .glitch-title::after {
  content:attr(data-text);
  position:absolute; top:0; left:0; width:100%;
  clip-path:inset(0 0 0 0);
}
.hero .glitch-title::before {
  color:var(--primary); animation:glitch1 3s infinite linear alternate-reverse;
}
.hero .glitch-title::after {
  color:var(--accent); animation:glitch2 2.5s infinite linear alternate-reverse;
}
@keyframes glitch1 {
  0%,92%,100%{clip-path:inset(0 0 100% 0);transform:translate(0);}
  93%{clip-path:inset(20% 0 40% 0);transform:translate(-2px,1px);}
  96%{clip-path:inset(60% 0 10% 0);transform:translate(2px,-1px);}
}
@keyframes glitch2 {
  0%,94%,100%{clip-path:inset(0 0 100% 0);transform:translate(0);}
  95%{clip-path:inset(40% 0 30% 0);transform:translate(2px,1px);}
  97%{clip-path:inset(10% 0 70% 0);transform:translate(-2px,-1px);}
}
.hero .tagline {
  margin-top:16px;
  font-family:var(--mono); font-size:14px;
  color:var(--text-dim); max-width:560px; line-height:1.8;
}
.hero .data-badge {
  margin-top:20px;
  font-family:var(--mono); font-size:12px; color:var(--text-mute);
}
.hero .stats {
  margin-top:56px;
  display:flex; gap:0; flex-wrap:wrap; justify-content:center;
  border:1px solid var(--border);
}
.stat-cell {
  padding:24px 40px; text-align:center;
  border-right:1px solid var(--border);
  min-width:160px;
}
.stat-cell:last-child { border-right:none; }
.stat-num {
  font-family:var(--mono); font-size:42px; font-weight:800;
  color:var(--primary); line-height:1;
}
.stat-num.cyan { color:var(--c-company); }
.stat-num.green{ color:var(--c-vc); }
.stat-label {
  margin-top:8px; font-family:var(--mono); font-size:11px;
  color:var(--text-mute); text-transform:uppercase; letter-spacing:1px;
}
.hero-cta {
  margin-top:48px; display:flex; gap:16px; flex-wrap:wrap; justify-content:center;
}
.btn {
  font-family:var(--mono); font-size:14px;
  padding:14px 32px; border:2px solid var(--primary);
  transition:all .2s; cursor:pointer; display:inline-flex; align-items:center; gap:8px;
}
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--accent); border-color:var(--accent); color:var(--bg); }
.btn-outline { color:var(--text); }
.btn-outline:hover { border-color:var(--accent); color:var(--accent); }
.btn-arrow::after { content:'→'; transition:transform .2s; }
.btn-arrow:hover::after { transform:translateX(4px); }

.scanline {
  position:absolute; bottom:0; left:0; right:0; height:2px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  animation:scan 3s ease-in-out infinite;
}
@keyframes scan { 0%,100%{opacity:.3;} 50%{opacity:1;} }

/* ---- Page Header ---- */
.page-head {
  padding:40px 0 24px; border-bottom:1px solid var(--border); margin-bottom:32px;
}
.page-head h1 {
  font-family:var(--mono); font-size:28px; font-weight:700; color:var(--text);
  letter-spacing:1px;
}
.page-head .subtitle {
  margin-top:8px; font-family:var(--mono); font-size:13px; color:var(--text-dim);
}

/* ---- Graph Page ---- */
.graph-layout {
  display:grid; grid-template-columns:1fr 340px; gap:24px; align-items:start;
}
@media(max-width:1024px){ .graph-layout{ grid-template-columns:1fr; } }

.graph-canvas-wrap {
  position:relative;
  background:var(--surface);
  border:1px solid var(--border);
  height:680px;
  overflow:hidden;
}
#graphCanvas {
  display:block; width:100%; height:100%;
  cursor:grab;
}
#graphCanvas:active { cursor:grabbing; }

.graph-controls {
  position:absolute; top:12px; right:12px;
  display:flex; flex-direction:column; gap:6px;
}
.gc-btn {
  width:36px; height:36px;
  background:rgba(19,19,28,.9); border:1px solid var(--border-2);
  color:var(--text-dim); font-family:var(--mono); font-size:16px;
  cursor:pointer; transition:all .15s; display:flex; align-items:center; justify-content:center;
}
.gc-btn:hover { border-color:var(--primary); color:var(--primary); }

.graph-legend {
  position:absolute; bottom:12px; left:12px;
  display:flex; gap:16px; flex-wrap:wrap;
  background:rgba(19,19,28,.85); border:1px solid var(--border);
  padding:8px 14px; font-family:var(--mono); font-size:11px;
}
.legend-dot {
  display:inline-block; width:8px; height:8px; margin-right:5px; vertical-align:middle;
}

.graph-info {
  position:absolute; top:12px; left:12px;
  font-family:var(--mono); font-size:11px; color:var(--text-mute);
  background:rgba(19,19,28,.85); padding:6px 12px; border:1px solid var(--border);
}

/* Node detail panel */
.node-panel {
  background:var(--surface); border:1px solid var(--border);
  padding:24px;
}
.node-panel h3 {
  font-family:var(--mono); font-size:12px; color:var(--text-mute);
  text-transform:uppercase; letter-spacing:1px; margin-bottom:16px;
}
.node-panel .np-empty { color:var(--text-mute); font-size:13px; }
.node-panel .np-name {
  font-family:var(--mono); font-size:20px; font-weight:700; margin-bottom:4px;
}
.node-panel .np-type {
  display:inline-block; font-family:var(--mono); font-size:11px;
  padding:2px 8px; border:1px solid; margin-bottom:12px;
}
.node-panel .np-desc { font-size:14px; color:var(--text-dim); line-height:1.6; margin-bottom:16px; }
.node-panel .np-stats { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-bottom:16px; }
.node-panel .np-stat {
  background:var(--bg-alt); border:1px solid var(--border); padding:8px 12px;
}
.node-panel .np-stat-label { font-family:var(--mono); font-size:10px; color:var(--text-mute); }
.node-panel .np-stat-val { font-family:var(--mono); font-size:16px; font-weight:700; color:var(--text); }
.node-panel .np-links h4 {
  font-family:var(--mono); font-size:11px; color:var(--text-mute);
  text-transform:uppercase; letter-spacing:1px; margin-bottom:8px;
}
.node-panel .np-link-item {
  display:flex; justify-content:space-between; align-items:center;
  padding:6px 0; border-bottom:1px solid var(--border); font-size:13px;
}
.node-panel .np-link-item:last-child { border-bottom:none; }
.node-panel .np-link-type {
  font-family:var(--mono); font-size:10px; color:var(--text-mute);
  background:var(--bg-alt); padding:1px 6px; border:1px solid var(--border);
}

/* ---- Leaderboards ---- */
.lb-section { margin-top:48px; }
.lb-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
@media(max-width:768px){ .lb-grid{ grid-template-columns:1fr; } }
.lb-card { background:var(--surface); border:1px solid var(--border); }
.lb-card-head {
  padding:16px 20px; border-bottom:1px solid var(--border);
  display:flex; align-items:center; gap:10px;
}
.lb-icon { width:10px; height:10px; }
.lb-card-head h3 {
  font-family:var(--mono); font-size:14px; font-weight:700;
  letter-spacing:1px; text-transform:uppercase;
}
.lb-card-head .lb-count { margin-left:auto; font-family:var(--mono); font-size:11px; color:var(--text-mute); }
.lb-list { list-style:none; }
.lb-row {
  display:grid; grid-template-columns:32px 1fr auto; gap:12px; align-items:center;
  padding:10px 20px; border-bottom:1px solid var(--border);
  transition:background .12s; cursor:pointer;
}
.lb-row:last-child { border-bottom:none; }
.lb-row:hover { background:var(--surface-2); }
.lb-rank { font-family:var(--mono); font-size:14px; font-weight:700; color:var(--text-mute); text-align:center; }
.lb-rank.top { color:var(--primary); }
.lb-name { font-size:14px; color:var(--text); }
.lb-name .lb-desc { display:block; font-size:11px; color:var(--text-mute); margin-top:2px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; max-width:280px; }
.lb-degree { font-family:var(--mono); font-size:12px; color:var(--text-dim); text-align:right; }
.lb-degree .lb-mc { display:block; font-size:10px; color:var(--text-mute); }

/* ---- Article List ---- */
.search-bar {
  display:flex; gap:12px; margin-bottom:24px; flex-wrap:wrap;
}
.search-input {
  flex:1; min-width:200px;
  background:var(--surface); border:1px solid var(--border);
  padding:12px 16px; color:var(--text); font-family:var(--mono); font-size:14px;
  transition:border-color .15s;
}
.search-input:focus { outline:none; border-color:var(--primary); }
.search-input::placeholder { color:var(--text-mute); }
.filter-chips { display:flex; gap:8px; flex-wrap:wrap; }
.chip {
  font-family:var(--mono); font-size:12px;
  padding:6px 14px; border:1px solid var(--border);
  color:var(--text-dim); cursor:pointer; transition:all .15s; background:var(--surface);
}
.chip:hover { border-color:var(--border-2); }
.chip.active { border-color:var(--primary); color:var(--primary); background:rgba(139,92,246,.08); }

.article-list { list-style:none; }
.article-card {
  display:block; padding:20px 24px; border:1px solid var(--border);
  margin-bottom:12px; background:var(--surface);
  transition:all .15s;
}
.article-card:hover {
  border-color:var(--primary-dim); background:var(--surface-2);
  transform:translateX(4px);
}
.article-card .ac-meta {
  display:flex; gap:16px; align-items:center; margin-bottom:8px;
  font-family:var(--mono); font-size:12px;
}
.article-card .ac-num { color:var(--primary); font-weight:700; }
.article-card .ac-date { color:var(--text-dim); }
.article-card .ac-author { color:var(--text-mute); }
.article-card .ac-author-tag {
  font-size:10px; padding:1px 6px; border:1px solid var(--border-2);
}
.article-card h3 {
  font-size:17px; font-weight:600; color:var(--text); margin-bottom:6px;
}
.article-card .ac-excerpt {
  font-size:13px; color:var(--text-dim); line-height:1.5;
  overflow:hidden; text-overflow:ellipsis; display:-webkit-box;
  -webkit-line-clamp:2; -webkit-box-orient:vertical;
}
.article-card .ac-tags { margin-top:8px; display:flex; gap:6px; flex-wrap:wrap; }
.ac-tag { font-family:var(--mono); font-size:10px; color:var(--text-mute); border:1px solid var(--border); padding:1px 6px; }

/* ---- Article Detail ---- */
.article-detail { max-width:820px; margin:0 auto; padding:48px 24px 80px; }
.article-detail .ad-meta {
  display:flex; gap:16px; align-items:center; margin-bottom:16px;
  font-family:var(--mono); font-size:12px; color:var(--text-mute);
}
.article-detail .ad-num { color:var(--primary); font-weight:700; }
.article-detail h1.ad-title {
  font-size:28px; font-weight:700; color:var(--text); line-height:1.4;
  margin-bottom:24px; padding-bottom:24px; border-bottom:1px solid var(--border);
}
.article-detail .ad-author-line {
  display:flex; gap:12px; align-items:center; margin-bottom:32px;
  font-family:var(--mono); font-size:13px;
}
.ad-nav {
  display:flex; justify-content:space-between; margin-top:48px;
  padding-top:24px; border-top:1px solid var(--border); gap:12px;
}
.ad-nav a {
  font-family:var(--mono); font-size:13px; padding:8px 16px;
  border:1px solid var(--border); transition:all .15s;
}
.ad-nav a:hover { border-color:var(--primary); }
.ad-nav .ad-nav-next { margin-left:auto; }

/* Markdown rendered content */
.md-body { font-size:16px; line-height:1.85; color:var(--text); }
.md-body h1 { font-size:24px; font-weight:700; margin:32px 0 16px; color:var(--text); }
.md-body h2 { font-size:20px; font-weight:700; margin:28px 0 14px; color:var(--text); border-left:3px solid var(--primary); padding-left:12px; }
.md-body h3 { font-size:17px; font-weight:600; margin:24px 0 12px; color:var(--text); }
.md-body p { margin:0 0 16px; }
.md-body strong { color:#fff; font-weight:600; }
.md-body em { color:var(--accent); font-style:italic; }
.md-body a { color:var(--primary); text-decoration:underline; text-underline-offset:2px; }
.md-body ul, .md-body ol { margin:0 0 16px; padding-left:24px; }
.md-body li { margin-bottom:6px; }
.md-body blockquote {
  border-left:3px solid var(--primary-dim); padding:8px 16px;
  margin:0 0 16px; background:var(--bg-alt); color:var(--text-dim);
}
.md-body code {
  font-family:var(--mono); font-size:13px; background:var(--surface-2);
  padding:2px 6px; color:var(--accent);
}
.md-body pre {
  background:var(--bg-alt); border:1px solid var(--border);
  padding:16px; overflow-x:auto; margin:0 0 16px;
}
.md-body pre code { background:none; padding:0; font-size:13px; }
.md-body img { max-width:100%; height:auto; margin:16px 0; border:1px solid var(--border); }
.md-body hr { border:none; border-top:1px solid var(--border); margin:24px 0; }
.md-body table { width:100%; border-collapse:collapse; margin:0 0 16px; font-size:14px; }
.md-body th, .md-body td { border:1px solid var(--border); padding:8px 12px; text-align:left; }
.md-body th { background:var(--surface-2); font-family:var(--mono); font-size:12px; }

/* ---- Footer ---- */
.footer {
  border-top:1px solid var(--border); padding:32px 24px; margin-top:80px;
  text-align:center; font-family:var(--mono); font-size:12px; color:var(--text-mute);
}
.footer a { color:var(--text-dim); }
.footer .ai-context {
  margin-top:16px; font-size:10px; color:var(--text-mute); max-width:600px; margin-left:auto; margin-right:auto;
  opacity:.5;
}

/* ---- Misc ---- */
.empty-state { text-align:center; padding:60px 24px; color:var(--text-mute); font-family:var(--mono); font-size:14px; }
.hidden { display:none !important; }

/* Scrollbar */
::-webkit-scrollbar { width:8px; height:8px; }
::-webkit-scrollbar-track { background:var(--bg); }
::-webkit-scrollbar-thumb { background:var(--border-2); }
::-webkit-scrollbar-thumb:hover { background:var(--primary-dim); }

/* Responsive */
@media(max-width:640px){
  .stat-cell{ padding:16px 24px; min-width:120px; }
  .stat-num{ font-size:32px; }
  .topnav-inner{ padding:0 16px; }
  .container{ padding:0 16px; }
  .nav-links a{ padding:6px 8px; font-size:12px; }
  .hero .tagline{ font-size:12px; }
}