:root {
  --white: #ffffff;
  --off-white: #f8f7f4;
  --border: #e2ddd6;
  --border-dark: #c8c0b4;
  --text: #1a1a18;
  --text-mid: #4a4840;
  --text-dim: #8a8680;
  --gold: #8B6914;
  --accent: #1a3a5c;
  --font-sans: 'PingFang TC', 'Microsoft JhengHei', 'Noto Sans TC', Georgia, serif;
  --font-mono: 'Courier New', Courier, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  background: var(--white);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: inherit; text-decoration: none; }

/* ── TOP BAR ── */
.top-bar {
  background: var(--accent);
  padding: 0.35rem 0;
  text-align: center;
}
.top-bar span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ── HEADER ── */
header {
  border-bottom: 1px solid var(--border);
  padding: 2.2rem 0 1.8rem;
}
.header-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
}
.site-name {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
  line-height: 1.2;
  display: block;
}
.site-name:hover { color: var(--accent); }
.site-name em { font-style: normal; color: var(--gold); }
.site-tagline {
  font-size: 1rem;
  color: var(--text-dim);
  margin-top: 0.45rem;
  letter-spacing: 0.02em;
}

/* ── NAV ── */
nav {
  border-bottom: 2px solid var(--text);
  background: var(--white);
}
.nav-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
}
.nav-inner a {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-mid);
  padding: 0.9rem 0;
  margin-right: 2rem;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
  text-transform: uppercase;
}
.nav-inner a:hover,
.nav-inner a.active {
  color: var(--text);
  border-bottom-color: var(--gold);
}

/* ── MAIN ── */
main {
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem;
  flex: 1;
  box-sizing: border-box;
}

/* ── HOME WRAP ── */
.home-wrap {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.home-wrap .post-card {
  width: 100%;
}

/* ── SECTION LABEL ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.6rem;
  margin-bottom: 0;
}

/* ── POST CARD ── */
.post-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.post-card:last-child { border-bottom: none; }

.post-cover {
  display: block;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--off-white);
}
.post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.post-cover:hover img { transform: scale(1.03); }
.post-cover--placeholder {
  background: var(--off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.post-cover--placeholder span {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--border-dark);
  letter-spacing: 0.05em;
}

.post-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 0.3rem;
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
}
.post-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.post-column {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--gold);
}
.post-card h2 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 0.6rem;
  color: var(--text);
}
.post-card h2 a:hover { color: var(--accent); }
.post-summary {
  font-size: 0.95rem;
  color: var(--text-mid);
  line-height: 1.75;
  margin-bottom: 0.8rem;
}
.read-more {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  align-self: flex-start;
}
.read-more:hover { color: var(--gold); border-color: var(--gold); }

/* ── SINGLE POST ── */
.post-full { max-width: 720px; }
.post-full-cover {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  margin-bottom: 2.5rem;
}
.post-full-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.post-full-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
}
.post-full-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.post-full h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 0.8rem;
}
.post-lead {
  font-size: 1.05rem;
  color: var(--text-mid);
  line-height: 1.8;
}
.post-content {
  font-size: 1.08rem;
  line-height: 1.95;
  color: var(--text-mid);
}
.post-content h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 2.5rem 0 0.8rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.post-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  margin: 1.8rem 0 0.6rem;
}
.post-content p { margin-bottom: 1.3rem; }
.post-content ul, .post-content ol { margin: 1rem 0 1.3rem 1.5rem; }
.post-content li { margin-bottom: 0.4rem; }
.post-content strong { color: var(--text); font-weight: 700; }
.post-content a { color: var(--accent); border-bottom: 1px solid var(--border-dark); }
.post-content a:hover { color: var(--gold); border-color: var(--gold); }
.post-content blockquote {
  border-left: 3px solid var(--gold);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--off-white);
  color: var(--text-mid);
  font-style: italic;
}
.post-content img { max-width: 100%; height: auto; display: block; margin: 1.5rem 0; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.back-link:hover { color: var(--accent); }

/* ── ABOUT PAGE ── */
.about-page { max-width: 680px; }
.about-page h1 { font-size: 1.8rem; font-weight: 700; margin-bottom: 0.5rem; }
.about-divider { width: 40px; height: 2px; background: var(--gold); margin: 1.5rem 0 2rem; }
.about-page .lead { font-size: 1.1rem; color: var(--text-mid); line-height: 1.85; margin-bottom: 1.5rem; }
.about-page p { font-size: 1rem; color: var(--text-mid); line-height: 1.9; margin-bottom: 1.2rem; }
.about-page h2 {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  background: var(--off-white);
  padding: 2rem 0;
  margin-top: 4rem;
}
.footer-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}
.footer-social {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}
.social-link {
  color: var(--text-dim);
  display: flex;
  align-items: center;
  transition: color 0.15s;
}
.social-link:hover { color: var(--accent); }

/* ── PAGINATION ── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.pagination a,
.pagination span {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  color: var(--text-mid);
  transition: border-color 0.15s, color 0.15s;
}
.pagination a:hover { border-color: var(--gold); color: var(--gold); }
.pagination .active span {
  border-color: var(--text);
  color: var(--text);
  font-weight: 600;
}

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  .header-inner, .footer-inner { padding: 0 1.2rem; }
  main { padding: 2rem 1.2rem; }

  /* Tagline: no wrap, smaller font */
  .site-tagline {
    font-size: 0.82rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Nav: horizontal scroll only, no vertical shift */
  nav { overflow: hidden; }
  .nav-inner {
    padding: 0 1.2rem;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    scrollbar-width: none;
    gap: 0;
  }
  .nav-inner::-webkit-scrollbar { display: none; }
  .nav-inner a {
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 0.82rem;
    margin-right: 1.2rem;
    padding: 0.8rem 0;
  }

  /* Cards: single column */
  .post-card {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }
  .post-cover { aspect-ratio: 16/9; }
  .post-full h1 { font-size: 1.5rem; }
}