:root {
  --ink: #1a2e28;
  --ink-soft: #3d524a;
  --paper: #f3efe6;
  --paper-deep: #e7e0d2;
  --moss: #2f6b57;
  --moss-deep: #1f4a3c;
  --accent: #c45c26;
  --line: rgba(26, 46, 40, 0.12);
  --shadow: 0 24px 60px rgba(26, 46, 40, 0.12);
  --surface: rgba(255, 252, 247, 0.82);
  --surface-soft: rgba(255, 252, 247, 0.7);
  --input-bg: #fffdf8;
  --btn-on-primary: #f7faf8;
  --ghost-hover: rgba(255, 255, 255, 0.45);
  --tool-bg: rgba(255, 255, 255, 0.7);
  --focus-ring: rgba(47, 107, 87, 0.15);
  --chip-active-fg: #f7faf8;
  --draft-bg: rgba(196, 92, 38, 0.12);
  --danger-border: rgba(196, 92, 38, 0.35);
  --danger-hover: rgba(196, 92, 38, 0.08);
  --bg-1: rgba(47, 107, 87, 0.18);
  --bg-2: rgba(196, 92, 38, 0.12);
  --bg-grad: linear-gradient(165deg, #f7f3eb 0%, #ebe4d6 48%, #e2dccf 100%);
  --noise-opacity: 0.35;
  --radius: 18px;
  /* 中文站统一用思源宋体系，避免 Fraunces 无中文导致中英字号不齐 */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-prose: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --ink: #e6ede9;
  --ink-soft: #a7b5ae;
  --paper: #121a17;
  --paper-deep: #1a2420;
  --moss: #4f9a7d;
  --moss-deep: #8fcbb0;
  --accent: #e08a55;
  --line: rgba(230, 237, 233, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --surface: rgba(28, 38, 34, 0.9);
  --surface-soft: rgba(22, 30, 27, 0.82);
  --input-bg: #1c2622;
  --btn-on-primary: #0f1613;
  --ghost-hover: rgba(255, 255, 255, 0.06);
  --tool-bg: rgba(255, 255, 255, 0.06);
  --focus-ring: rgba(79, 154, 125, 0.28);
  --chip-active-fg: #0f1613;
  --draft-bg: rgba(224, 138, 85, 0.16);
  --danger-border: rgba(224, 138, 85, 0.4);
  --danger-hover: rgba(224, 138, 85, 0.12);
  --bg-1: rgba(79, 154, 125, 0.14);
  --bg-2: rgba(224, 138, 85, 0.1);
  --bg-grad: linear-gradient(165deg, #101816 0%, #141d1a 48%, #0e1412 100%);
  --noise-opacity: 0.2;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, var(--bg-1), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, var(--bg-2), transparent 50%),
    var(--bg-grad);
}

.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.45'/%3E%3C/svg%3E");
  pointer-events: none;
}

[hidden] {
  display: none !important;
}

.view {
  min-height: 100vh;
  animation: fade-in 0.45s ease both;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.brand,
.topbar-brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-synthesis: none;
}

.brand {
  font-size: 1.75rem;
  margin: 0 0 1.25rem;
  color: var(--moss-deep);
}

h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.6vw, 2.1rem);
  line-height: 1.35;
  margin: 0 0 0.5rem;
  font-synthesis: none;
}

.lede {
  margin: 0;
  color: var(--ink-soft);
  max-width: 36rem;
}

.meta {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 1.75rem;
}

/* Gate */
.gate {
  display: grid;
  place-items: center;
  padding: 2rem 1.25rem;
}

.gate-panel {
  width: min(420px, 100%);
  padding: 2.25rem 2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

/* Layout */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-brand {
  font-size: 1.25rem;
  color: var(--moss-deep);
}

.topbar-actions {
  display: flex;
  gap: 0.5rem;
}

.page {
  width: min(760px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.page.admin {
  width: min(960px, calc(100% - 3rem));
  padding: 2.25rem 0 5rem;
}

.page-head {
  margin-bottom: 1.75rem;
}

.page-head h1 {
  font-size: clamp(1.45rem, 2.5vw, 1.85rem);
}

.page-head.row,
.row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.row.gap {
  justify-content: flex-start;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.search-field {
  flex: 1 1 220px;
}

.search-field input {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-field input:focus {
  border-color: var(--moss);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.toolbar-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.list-meta {
  margin: 0;
  margin-left: auto;
  color: var(--ink-soft);
  font-size: 0.9rem;
  white-space: nowrap;
}

/* 阅读页用顶栏切换主题时，隐藏右下角按钮避免重复 */
body:has(#view-read:not([hidden])) .theme-fab {
  display: none;
}

.search-opt {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.search-opt input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--moss);
  cursor: pointer;
}

.category-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.chip {
  font: inherit;
  font-size: 0.88rem;
  color: var(--ink-soft);
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.chip:hover {
  color: var(--ink);
  border-color: rgba(47, 107, 87, 0.35);
}

.chip.active {
  color: var(--chip-active-fg);
  background: var(--moss);
  border-color: var(--moss);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 560px) {
  .field-row {
    grid-template-columns: 1fr;
  }
}

/* Forms */
.stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.field input,
.field textarea {
  font: inherit;
  color: var(--ink);
  background: var(--input-bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.9rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field textarea {
  resize: vertical;
  min-height: 220px;
  line-height: 1.7;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--moss);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.btn {
  font: inherit;
  font-weight: 500;
  border: none;
  cursor: pointer;
  border-radius: 999px;
  padding: 0.65rem 1.2rem;
  transition: transform 0.15s ease, background 0.2s, color 0.2s, opacity 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: var(--moss);
  color: var(--btn-on-primary);
}

.btn.primary:hover {
  background: var(--moss-deep);
}

.btn.ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid transparent;
}

.btn.ghost:hover {
  border-color: var(--line);
  color: var(--ink);
  background: var(--ghost-hover);
}

.btn.danger {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--danger-border);
}

.btn.danger:hover {
  background: var(--danger-hover);
}

.form-error {
  margin: 0;
  color: var(--accent);
  font-size: 0.9rem;
}

.form-ok {
  margin: 0;
  color: var(--moss-deep);
  font-size: 0.9rem;
}

.editor-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0;
}

.check-field {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
}

.check-field input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--moss);
}

.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}

.toolbar-hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-left: 0.25rem;
}

.btn.tool {
  border-radius: 10px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  background: var(--tool-bg);
  border: 1px solid var(--line);
  color: var(--ink-soft);
}

.btn.tool:hover {
  color: var(--ink);
  border-color: rgba(47, 107, 87, 0.4);
  background: var(--input-bg);
}

.draft-badge {
  display: inline-block;
  margin-right: 0.45rem;
  padding: 0.1rem 0.45rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  vertical-align: middle;
  color: var(--accent);
  background: var(--draft-bg);
  border-radius: 6px;
}

/* Lists */
.article-list,
.admin-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-list li {
  border-top: 1px solid var(--line);
}

.article-list a {
  display: block;
  padding: 1.15rem 0.15rem;
  color: inherit;
  text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
}

.article-list a:hover {
  color: var(--moss-deep);
  padding-left: 0.35rem;
}

.article-list .title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
  font-synthesis: none;
}

.article-list .sub {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.empty {
  color: var(--ink-soft);
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

/* Reader */
.reader {
  max-width: 40rem;
}

.reader h1 {
  margin-bottom: 0.65rem;
}

.reader .meta {
  margin-bottom: 2rem;
}

.reader .prose {
  font-family: var(--font-prose);
  font-size: 1rem;
  line-height: 1.85;
  word-break: break-word;
  /* 允许合成加粗：避免 700 未加载时 **加粗** 看不出 */
  font-synthesis: weight;
}

.reader .prose p {
  margin: 0 0 1.15em;
  font-size: inherit;
}

.reader .prose p:last-child {
  margin-bottom: 0;
}

.reader .prose a {
  color: var(--moss-deep);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  font-size: inherit;
}

.reader .prose a:hover {
  color: var(--accent);
}

.reader .prose strong {
  font-weight: 700;
  font-family: var(--font-prose);
  color: var(--ink);
  font-size: inherit;
}

@media (min-width: 768px) {
  .reader .prose {
    font-size: 1.125rem; /* 电脑略放大 */
  }
}

/* Admin */
.admin-login {
  width: min(420px, 100%);
}

.editor {
  margin-bottom: 2rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.admin-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.admin-list .info {
  min-width: 0;
}

.admin-list .title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.2rem;
}

.admin-banner {
  margin-bottom: 1.25rem;
  padding: 1rem 1.15rem;
  background: var(--draft-bg);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius);
}

.admin-banner p {
  margin: 0 0 0.75rem;
  color: var(--ink);
  font-size: 0.95rem;
}

.admin-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.admin-search {
  flex: 1 1 200px;
}

.admin-filter {
  margin-bottom: 0;
}

.admin-list .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex-shrink: 0;
}

.theme-fab {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 40;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 0.95rem;
  box-shadow: var(--shadow);
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: transform 0.15s ease, background 0.2s, color 0.2s;
}

.theme-fab:hover {
  transform: translateY(-1px);
  color: var(--moss-deep);
}

/* 前台手机：紧凑、干净 */
@media (max-width: 720px) {
  .topbar {
    padding: 0.5rem 0.75rem;
    gap: 0.4rem;
  }

  .topbar-brand {
    font-size: 1rem;
    font-weight: 700;
  }

  .topbar-actions {
    gap: 0;
  }

  .topbar .btn.ghost {
    padding: 0.3rem 0.5rem;
    font-size: 0.8rem;
  }

  .page-list {
    width: 100%;
    padding: 0.55rem 0.75rem 3.25rem;
    box-sizing: border-box;
  }

  .toolbar {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 0.45rem;
  }

  .search-field {
    flex: none;
    width: 100%;
  }

  .search-field input {
    padding: 0.55rem 0.85rem;
    font-size: 0.9rem;
    border-radius: 10px;
    background: var(--surface);
  }

  .toolbar-meta {
    padding: 0 0.1rem;
    gap: 0.5rem;
  }

  .search-opt {
    font-size: 0.75rem;
    color: var(--ink-soft);
  }

  .search-opt input {
    width: 0.85rem;
    height: 0.85rem;
  }

  .list-meta {
    font-size: 0.72rem;
    opacity: 0.85;
  }

  .category-bar {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.4rem;
    margin: 0 -0.75rem 0.35rem;
    padding: 0.15rem 0.75rem 0.45rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .category-bar::-webkit-scrollbar {
    display: none;
  }

  .chip {
    flex: 0 0 auto;
    font-size: 0.75rem;
    padding: 0.28rem 0.7rem;
    background: var(--surface);
  }

  .article-list {
    margin: 0 -0.15rem;
  }

  .article-list li {
    border-top: none;
    border-bottom: 1px solid var(--line);
  }

  .article-list li:last-child {
    border-bottom: none;
  }

  .article-list a {
    padding: 0.72rem 0.15rem;
  }

  .article-list a:hover {
    padding-left: 0.15rem;
  }

  .article-list .title {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 0.2rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .article-list .sub {
    font-size: 0.72rem;
    line-height: 1.3;
    opacity: 0.9;
  }

  .empty {
    padding: 1.25rem 0.15rem;
    font-size: 0.85rem;
    border-top: none;
  }

  .reader {
    width: calc(100% - 1.5rem);
    padding-top: 0.85rem;
  }

  .reader h1 {
    font-size: 1.28rem;
    margin-bottom: 0.35rem;
    line-height: 1.35;
  }

  .reader .meta {
    margin-bottom: 1.05rem;
    font-size: 0.75rem;
  }

  .reader .prose {
    font-size: 0.95rem;
    line-height: 1.8;
  }

  .reader .prose p {
    margin: 0 0 0.95em;
  }

  .reader .prose strong {
    font-weight: 700;
  }

  .gate-panel {
    padding: 1.5rem 1.15rem;
  }

  .theme-fab {
    right: 0.75rem;
    bottom: 0.75rem;
    padding: 0.45rem 0.8rem;
    font-size: 0.8rem;
  }
}

/* 后台偏桌面：更疏一点 */
@media (min-width: 900px) {
  .page.admin {
    width: min(1040px, calc(100% - 4rem));
  }

  .page.admin .page-head {
    margin-bottom: 2rem;
  }

  .page.admin .admin-toolbar {
    margin-bottom: 1.35rem;
    padding: 0.85rem 1rem;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 14px;
  }

  .page.admin .admin-list li {
    padding: 1.15rem 0.25rem;
  }

  .page.admin .editor {
    padding: 1.5rem 1.6rem;
    max-width: 52rem;
  }
}

@media (max-width: 560px) {
  .admin-list li {
    flex-direction: column;
    align-items: stretch;
  }
}