:root {
  --home-bg: #f5ede3;
  --article-bg: #ffffff;
  --accent: #cf7e58;
  --card-bg: #fffaf4;
  --card-border: #eadfce;
  --ink: #201712;
  --muted: #8e8176;
  --max-width: 1320px;
  --shell-padding: clamp(1.5rem, 4vw, 4rem);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

body.theme-home { background: var(--home-bg); }
body.theme-post { background: var(--article-bg); }

a { color: inherit; text-decoration: none; }

.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--shell-padding);
  padding-right: var(--shell-padding);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.4rem;
  padding-bottom: 1.4rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.05rem;
}

.brand-dot {
  width: 10px; height: 10px;
  border-radius: 999px;
  background: var(--accent);
  display: inline-block;
}

.search-form input {
  min-width: 280px;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,0.08);
  background: rgba(255,255,255,0.75);
  font-size: 0.95rem;
  outline: none;
}
.search-form input:focus { border-color: var(--accent); }

.hero {
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(2rem, 4vw, 4rem);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.hero-copy h1 {
  margin: 0;
  font-family: var(--home-title-font);
  font-size: var(--home-title-size);
  font-weight: var(--home-title-weight);
  letter-spacing: -0.02em;
  line-height: 1.05;
}
.hero-subtitle {
  color: var(--muted);
  margin-top: 1rem;
  font-size: 1.05rem;
}
.hero-description {
  max-width: 560px;
  color: var(--muted);
  margin-top: 0.6rem;
  line-height: 1.7;
}
.hero-signals { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.hero-signals span {
  font-size: 0.82rem;
  color: var(--muted);
  border: 1px solid rgba(0,0,0,0.08);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.55);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.2rem, 2vw, 1.8rem);
  padding-bottom: clamp(3rem, 6vw, 6rem);
}

.post-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1.7rem 1.6rem 1.4rem;
  min-height: 320px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  display: flex;
}
.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(45, 30, 20, 0.08);
  border-color: rgba(207, 126, 88, 0.45);
}
.post-card-link { display: flex; flex-direction: column; width: 100%; }
.post-card h2 {
  margin: 0 0 0.9rem 0;
  font-family: var(--card-title-font);
  font-size: var(--card-title-size);
  font-weight: var(--card-title-weight);
  color: var(--card-title-color);
  line-height: 1.35;
}
.post-card p {
  margin: 0;
  color: var(--card-body-color);
  font-family: var(--card-body-font);
  font-size: var(--card-body-size);
  font-weight: var(--card-body-weight);
  line-height: 1.7;
  flex: 1;
}
.post-meta-row {
  margin-top: 1.2rem;
  display: flex;
  justify-content: space-between;
  color: var(--card-meta-color);
  font-size: 0.85rem;
}

.empty-card { grid-column: span 3; text-align: center; padding: 3rem 1rem; }

.site-footer {
  margin-top: auto;
  padding-top: 3rem;
  padding-bottom: 2.5rem;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  color: var(--muted);
  border-top: 1px dashed rgba(0,0,0,0.08);
  margin-top: 3rem;
}
.footer-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.footer-links a:hover { color: var(--accent); }

.post-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 3rem;
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}
.post-head { border-bottom: 1px solid rgba(0,0,0,0.06); padding-bottom: 1.6rem; margin-bottom: 1.8rem; }
.post-kicker { color: var(--accent); text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.78rem; margin-bottom: 1rem; }
.post-article h1 { font-size: clamp(2rem, 3vw, 2.6rem); margin: 0 0 1rem; line-height: 1.2; }
.post-summary { color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
.post-date { color: var(--muted); font-size: 0.88rem; margin-top: 0.8rem; }

.prose {
  font-family: var(--article-font);
  font-size: var(--article-size);
  font-weight: var(--article-weight);
  color: var(--article-color);
  line-height: var(--article-line-height);
}
.prose p { margin: 0 0 1.4rem; }
.prose h2 { margin: 2.4rem 0 1rem; font-size: 1.6rem; }
.prose h3 { margin: 2rem 0 0.8rem; font-size: 1.28rem; }
.prose ul, .prose ol { margin: 0 0 1.4rem; padding-left: 1.4rem; }
.prose li { margin-bottom: 0.45rem; }
.prose blockquote {
  margin: 1.6rem 0;
  padding: 0.4rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: rgba(207, 126, 88, 0.07);
  color: #3a2c22;
}
.prose pre {
  background: #1d1a17;
  color: #f4e9da;
  padding: 1.1rem 1.3rem;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 0.95rem;
  line-height: 1.65;
}
.prose code {
  font-family: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  background: rgba(0,0,0,0.06);
  padding: 0.1rem 0.4rem;
  border-radius: 5px;
  font-size: 0.92em;
}
.prose pre code { background: transparent; padding: 0; }
.prose img { max-width: 100%; border-radius: 10px; }
.prose a { color: var(--accent); border-bottom: 1px solid rgba(207,126,88,0.4); }

.post-aside { display: flex; flex-direction: column; gap: 1.2rem; }
.aside-card {
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 14px;
  padding: 1.2rem 1.3rem;
  background: rgba(255,255,255,0.6);
}
.aside-card h3 { margin: 0 0 0.6rem; font-size: 1rem; }
.aside-card p { color: var(--muted); font-size: 0.92rem; line-height: 1.7; margin: 0; }
.related-link {
  display: block;
  padding: 0.55rem 0;
  border-bottom: 1px dashed rgba(0,0,0,0.08);
  font-size: 0.95rem;
}
.related-link:last-child { border-bottom: none; }
.related-link:hover { color: var(--accent); }

.empty-state { text-align: center; padding: 4rem 1rem; }
.empty-state h1 { font-size: 2rem; }
.empty-state p { color: var(--muted); margin: 1rem auto 2rem; max-width: 560px; }

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.7rem 1.4rem;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
}
.primary-btn:hover { filter: brightness(0.95); }
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0,0,0,0.14);
  background: transparent;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  color: inherit;
  cursor: pointer;
  font-weight: 500;
}
.full-width { width: 100%; }
.text-link { color: var(--accent); background: none; border: none; padding: 0; cursor: pointer; font-size: 0.95rem; }
.danger-link { color: #c94a4a; background: none; border: none; cursor: pointer; font-size: 0.95rem; }

body.theme-admin {
  background: #f7f5f1;
  color: #2b231d;
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 18px;
  padding: 2rem;
  box-shadow: 0 30px 60px rgba(34, 24, 18, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.login-card h1 { margin: 0; font-size: 1.6rem; }
.login-card p { margin: 0; color: var(--muted); }
.login-card label { display: flex; flex-direction: column; gap: 0.4rem; font-size: 0.9rem; }
.login-card input {
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 10px;
  font-size: 1rem;
  outline: none;
}
.login-card input:focus { border-color: var(--accent); }

.admin-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
}
.admin-sidebar {
  background: #201712;
  color: #f3e7d6;
  padding: 1.6rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: sticky;
  top: 0;
  height: 100vh;
}
.admin-brand { font-weight: 700; font-size: 1.05rem; color: #fff; }
.admin-nav { display: flex; flex-direction: column; gap: 0.2rem; }
.admin-nav a {
  padding: 0.55rem 0.8rem;
  border-radius: 10px;
  color: rgba(255,255,255,0.74);
  font-size: 0.95rem;
}
.admin-nav a:hover, .admin-nav a.active {
  background: rgba(255,255,255,0.08);
  color: #fff;
}
.admin-main {
  padding: 2.2rem clamp(1.5rem, 3vw, 2.6rem);
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  min-width: 0;
}

.admin-title { margin: 0; font-size: 1.8rem; }
.admin-subtitle { color: var(--muted); margin: 0.2rem 0 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
.stat-card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 14px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.stat-card span { color: var(--muted); font-size: 0.9rem; }
.stat-card strong { font-size: 1.8rem; }

.admin-section {
  background: #fff;
  border-radius: 16px;
  padding: 1.6rem 1.6rem 1.8rem;
  border: 1px solid rgba(0,0,0,0.06);
}
.admin-section.callout {
  background: #fffaf3;
  border-color: rgba(207, 126, 88, 0.25);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.95rem;
}
.admin-table th, .admin-table td {
  text-align: left;
  padding: 0.8rem 0.6rem;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  vertical-align: middle;
}
.admin-table th { color: var(--muted); font-weight: 600; font-size: 0.85rem; letter-spacing: 0.05em; text-transform: uppercase; }
.empty-row { text-align: center; color: var(--muted); padding: 1.4rem 0; }
.row-actions { display: flex; gap: 0.8rem; align-items: center; }
.row-actions form { margin: 0; }

.tag { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.78rem; }
.tag.published { background: rgba(34, 139, 90, 0.12); color: #22764c; }
.tag.draft { background: rgba(0,0,0,0.08); color: var(--muted); }

.admin-form { display: flex; flex-direction: column; gap: 1.2rem; margin-top: 1rem; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1rem;
}
.form-grid label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.9rem; }
.form-grid .col-2 { grid-column: span 2; }
.form-grid input, .form-grid textarea, .form-grid select {
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(0,0,0,0.14);
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  outline: none;
}
.form-grid textarea { resize: vertical; font-family: "JetBrains Mono", ui-monospace, monospace; }
.form-grid input:focus, .form-grid textarea:focus, .form-grid select:focus { border-color: var(--accent); }
.form-fieldset { border: 1px dashed rgba(0,0,0,0.12); border-radius: 12px; padding: 1rem 1.2rem; }
.form-fieldset legend { padding: 0 0.5rem; color: var(--muted); font-size: 0.85rem; }
.form-actions { display: flex; gap: 0.8rem; justify-content: flex-end; }
.check-row { flex-direction: row !important; align-items: center; gap: 0.6rem !important; }

.inline-form { display: flex; gap: 0.8rem; margin-top: 1rem; }
.inline-form input {
  flex: 1;
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(0,0,0,0.14);
  border-radius: 10px;
  font-size: 0.95rem;
}

.alert {
  border-radius: 12px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
}
.alert.success { background: rgba(34, 139, 90, 0.1); color: #22764c; }
.alert.error { background: rgba(201, 74, 74, 0.1); color: #c94a4a; }

.signal-list { margin: 0; padding-left: 1.2rem; line-height: 1.9; }
.signal-list code { background: rgba(0,0,0,0.06); padding: 0.1rem 0.4rem; border-radius: 5px; font-size: 0.9em; }

@media (min-width: 1800px) {
  :root { --max-width: 1520px; }
  .hero-copy h1 { font-size: clamp(3.6rem, 3.2vw, 5.4rem); }
  .post-card { min-height: 360px; padding: 2rem 1.9rem 1.6rem; }
  .post-card h2 { font-size: 1.8rem; }
}

@media (max-width: 1100px) {
  .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .empty-card { grid-column: span 2; }
  .post-shell { grid-template-columns: minmax(0, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-shell { grid-template-columns: 1fr; }
  .admin-sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .admin-sidebar .admin-nav { flex-direction: row; flex-wrap: wrap; flex: 1; }
  .admin-sidebar form { margin-left: auto; }
}

@media (max-width: 720px) {
  .post-grid { grid-template-columns: 1fr; }
  .empty-card { grid-column: span 1; }
  .site-header { flex-direction: column; align-items: flex-start; gap: 0.9rem; }
  .search-form input { min-width: 0; width: 100%; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .col-2 { grid-column: span 1; }
  .stat-grid { grid-template-columns: 1fr; }
  .hero { flex-direction: column; align-items: flex-start; }
}