/* styles.css */
:root{
  --bg: #0b0c10;
  --panel: #0f1117;
  --muted: #131622;
  --text: #e8e8ea;
  --sub: #b7b7c2;
  --line: rgba(255,255,255,.10);
  --line2: rgba(255,255,255,.16);
  --accent: #d6d6ff;

  --radius: 18px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --max: 1040px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: radial-gradient(1200px 800px at 30% -10%, rgba(214,214,255,.10), transparent 55%),
              radial-gradient(900px 600px at 85% 10%, rgba(214,214,255,.08), transparent 45%),
              var(--bg);
  color:var(--text);
  line-height:1.7;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:4px; }

.container{
  width:min(var(--max), calc(100% - 40px));
  margin:0 auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:10px;
  background:var(--panel);
  border:1px solid var(--line2);
  padding:10px 12px;
  border-radius:12px;
}
.skip-link:focus{ left:12px; z-index:999; }

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(11,12,16,.65);
  border-bottom:1px solid var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 0;
  gap:18px;
}

.brand-link{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
}
.brand-mark{
  width:28px; height:28px;
  border-radius:999px;
  border:1px solid var(--line2);
  display:grid; place-items:center;
  box-shadow: var(--shadow);
  font-size:14px;
  color:var(--accent);
}
.brand-name{ font-weight:650; letter-spacing:.2px; }
.brand-tagline{
  margin:4px 0 0;
  color:var(--sub);
  font-size:14px;
}

.nav{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.nav a{
  padding:8px 10px;
  border-radius:12px;
  border:1px solid transparent;
  color:var(--sub);
}
.nav a:hover{
  border-color:var(--line2);
  background: rgba(255,255,255,.04);
  text-decoration:none;
  color:var(--text);
}

.hero{
  padding:64px 0 28px;
}
.hero-inner{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  border:1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding:44px 34px;
  box-shadow: var(--shadow);
}

h1{
  margin:0 0 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height:1.15;
  letter-spacing:.2px;
}
.lead{
  margin:0 0 22px;
  color:var(--sub);
  font-size: 16px;
  max-width: 72ch;
}

.hero-cta{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin: 16px 0 18px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 14px;
  border-radius:14px;
  border:1px solid var(--line2);
  background: rgba(255,255,255,.06);
  box-shadow: var(--shadow);
  text-decoration:none;
}
.btn:hover{
  background: rgba(255,255,255,.10);
  text-decoration:none;
}
.btn-ghost{
  background: transparent;
}
.hero-meta{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top: 6px;
}
.pill{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--sub);
  background: rgba(255,255,255,.03);
}

.section{
  padding: 54px 0;
}
.section-muted{
  background: linear-gradient(180deg, transparent, rgba(255,255,255,.02), transparent);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.section-head{
  margin-bottom: 22px;
}
.section-head h2{
  margin:0 0 6px;
  font-size: 22px;
  letter-spacing:.2px;
}
.section-head p{
  margin:0;
  color:var(--sub);
  max-width: 80ch;
}

.cards{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.card{
  border:1px solid var(--line);
  background: rgba(15,17,23,.65);
  border-radius: var(--radius);
  padding:16px 16px 14px;
  box-shadow: var(--shadow);
}
.card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  color:var(--sub);
  font-size:12px;
  margin-bottom: 8px;
}
.label{
  display:inline-flex;
  gap:8px;
  align-items:center;
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  padding:4px 8px;
  border-radius:999px;
}
.card h3{
  margin:0 0 8px;
  font-size:16px;
  line-height:1.35;
}
.card p{
  margin:0;
  color:var(--sub);
  font-size:14px;
}

.section-foot{
  margin-top: 14px;
}
.link{ color: var(--accent); }

.list{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:14px;
}
.list li{
  display:flex;
  gap:12px;
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.03);
  padding:14px 14px;
}
.dot{
  width:10px; height:10px;
  border-radius:999px;
  margin-top: 8px;
  background: var(--accent);
  opacity:.85;
  flex: 0 0 auto;
}
.list p{
  margin:6px 0 0;
  color:var(--sub);
}

.grid-2{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.panel{
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15,17,23,.55);
  padding:16px;
  box-shadow: var(--shadow);
}
.panel h3{ margin:0 0 6px; font-size:16px; }
.panel p{ margin:0; color:var(--sub); }

.timeline{
  display:grid;
  gap: 14px;
}
.t-item{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 14px;
  align-items:start;
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.03);
  padding:14px;
}
.t-date{
  color:var(--sub);
  font-size:12px;
  padding-top: 2px;
}
.t-body h3{ margin:0 0 6px; font-size:16px; }
.t-body p{ margin:0; color:var(--sub); }

.about{
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15,17,23,.55);
  padding: 16px;
  box-shadow: var(--shadow);
}
.about p{ margin:0 0 12px; color:var(--sub); }
.callout{
  border:1px solid var(--line2);
  border-radius: var(--radius);
  padding: 12px 12px;
  background: rgba(214,214,255,.06);
}
.callout p{ margin:0; color:var(--text); }
.footer-links{
  margin-top: 12px;
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--sub);
}
.sep{ opacity:.6; }

.site-footer{
  border-top:1px solid var(--line);
  padding: 18px 0 30px;
  color:var(--sub);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  gap:10px;
  flex-wrap:wrap;
}
.muted{ opacity:.7; }

/* Responsive */
@media (max-width: 920px){
  .cards{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .t-item{ grid-template-columns: 1fr; }
  .header-inner{ flex-direction:column; align-items:flex-start; }
  .nav{ justify-content:flex-start; }
  .hero-inner{ padding: 34px 18px; }
}