:root {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --bg-elev-2: #1c2333;
  --border: #2a3441;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #58a6ff;
  --ok: #3fb950;
  --warn: #d29922;
  --danger: #f85149;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-elev: #f6f8fa;
    --bg-elev-2: #eef1f5;
    --border: #d6dde5;
    --text: #1f2328;
    --text-dim: #656d76;
    --accent: #0969da;
    --ok: #1a7f37;
    --warn: #9a6700;
    --danger: #cf222e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* header */
.site-head {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--text);
}
.brand::before { content: "› "; color: var(--accent); }
.site-nav { display: flex; gap: 1.25rem; }
.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.92rem;
}
.site-nav a:hover { color: var(--accent); }

/* hero */
.hero { padding: 3.5rem 0 2.5rem; }
.hero h1 {
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  line-height: 1.2;
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}
.hero .hero-en {
  color: var(--text-dim);
  font-weight: 400;
  font-size: 0.62em;
  letter-spacing: 0;
  white-space: nowrap;
}
.hero .hero-role {
  color: var(--text-dim);
  font-size: 1.02rem;
  margin: 0 0 1.75rem;
  max-width: 40rem;
}
.hero p { color: var(--text-dim); font-size: 1.08rem; margin: 0; max-width: 40rem; }
.hero .stat-row { margin-bottom: 0; }

[hidden] { display: none !important; }

/* sections */
section { padding: 2.5rem 0; border-top: 1px solid var(--border); }
section > h2 {
  font-size: 1.35rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}
section > .lead { color: var(--text-dim); margin: 0 0 1.8rem; }

/* cards */
.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.card {
  display: block;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, transform .15s;
}
a.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.card p { margin: 0 0 0.9rem; color: var(--text-dim); font-size: 0.92rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.12rem 0.6rem;
}

.placeholder-note {
  background: var(--bg-elev);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  color: var(--text-dim);
  font-size: 0.94rem;
}

/* ---- CV ---- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.75rem;
}
.stat {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  text-align: center;
}
.stat b {
  display: block;
  font-family: var(--mono);
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.stat span { font-size: 0.8rem; color: var(--text-dim); }

.cv-summary { margin: 0 0 2rem; color: var(--text-dim); }

.cv-h3 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  font-weight: 600;
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.job { margin-bottom: 1.5rem; }
.job-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}
.job-head b { font-size: 1rem; }
.job-meta { font-size: 0.84rem; color: var(--text-dim); font-family: var(--mono); }

.cv-list { margin: 0; padding-left: 1.1rem; }
.cv-list li { margin-bottom: 0.4rem; font-size: 0.92rem; color: var(--text-dim); }
.cv-list li b { color: var(--text); font-weight: 600; }

.skills { margin: 0; display: grid; gap: 0.1rem 1.25rem; }
@media (min-width: 660px) {
  .skills { grid-template-columns: max-content 1fr; }
}
.skills dt {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 0 0;
}
.skills dd {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-dim);
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
}
@media (max-width: 659px) {
  .skills dd { padding-bottom: 0.7rem; margin-bottom: 0.3rem; }
}

.cv-plain { font-size: 0.92rem; color: var(--text-dim); margin: 0; }

/* 近期進展（每日腳本更新） */
.recent-item {
  border-left: 2px solid var(--border);
  padding: 0 0 0 1rem;
  margin-bottom: 1.25rem;
}
.recent-item time {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--text-dim);
}
.recent-item p { margin: 0.2rem 0 0; font-size: 0.92rem; }

/* footer */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 3rem;
  color: var(--text-dim);
  font-size: 0.86rem;
}

/* ---- demo page shared ---- */
.demo-head { padding: 2.5rem 0 1.5rem; }
.demo-head .back { font-size: 0.88rem; color: var(--text-dim); text-decoration: none; }
.demo-head .back:hover { color: var(--accent); }
.demo-head h1 { font-size: clamp(1.5rem, 4vw, 2.1rem); margin: 0.8rem 0 0.5rem; letter-spacing: -0.02em; }
.demo-head p { color: var(--text-dim); margin: 0; max-width: 44rem; }

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.panel h2 { font-size: 1rem; margin: 0 0 0.9rem; letter-spacing: 0; }

button {
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--bg-elev-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.5rem 0.95rem;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover:not(:disabled) { filter: brightness(1.1); }

.btn-row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }

.note {
  font-size: 0.84rem;
  color: var(--text-dim);
  border-left: 2px solid var(--border);
  padding-left: 0.85rem;
  margin: 1.5rem 0 0;
}

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
td.num { text-align: right; font-family: var(--mono); }

.status { font-family: var(--mono); font-size: 0.78rem; padding: 0.1rem 0.5rem; border-radius: 999px; white-space: nowrap; }
.status.done { color: var(--ok); border: 1px solid color-mix(in srgb, var(--ok) 40%, transparent); }
.status.wait { color: var(--warn); border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); }
.status.blocked { color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 40%, transparent); }
.status.hold { color: var(--text-dim); border: 1px solid var(--border); }

.log {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.85rem;
  height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.log .l-ok { color: var(--ok); }
.log .l-warn { color: var(--warn); }
.log .l-err { color: var(--danger); }
.log .l-dim { color: var(--text-dim); }

.scroll-x { overflow-x: auto; }