:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #6b7280;
  --line: #e6e3dd;
  --accent: #b45309;
  --accent-soft: #fff4e6;
  --code-bg: #f4f2ee;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px -12px rgba(0, 0, 0, .12);
  --maxw: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1b1e24;
    --text: #e8e6e3;
    --muted: #9aa1ab;
    --line: #2b2f37;
    --accent: #f0a35e;
    --accent-soft: #2a2117;
    --code-bg: #101216;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 30px -14px rgba(0, 0, 0, .7);
  }
}

.theme-private {
  --accent: #2563eb;
  --accent-soft: #eaf1ff;
}
@media (prefers-color-scheme: dark) {
  .theme-private { --accent: #7aa5f5; --accent-soft: #182238; }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.75 "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
        -apple-system, "Segoe UI", system-ui, sans-serif;
  word-break: break-word;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 10;
}
.head-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand { text-decoration: none; color: inherit; display: flex; flex-direction: column; }
.brand-name { font-size: 19px; font-weight: 700; letter-spacing: .02em; }
.brand-sub { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  text-decoration: none; color: var(--muted); font-size: 14px;
  padding: 6px 12px; border-radius: 999px; transition: .16s;
}
.nav a:hover { color: var(--text); background: var(--accent-soft); }
.nav a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.nav a.nav-priv { border: 1px dashed var(--line); }

/* ---------- hero ---------- */
.hero { padding: 42px 0 26px; }
.hero h1 { margin: 0 0 8px; font-size: 30px; letter-spacing: -.01em; }
.hero p { margin: 0; color: var(--muted); }

/* ---------- list & cards ---------- */
.list { display: flex; flex-direction: column; gap: 14px; padding: 24px 0; }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 18px 20px; transition: .16s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-1px); border-color: var(--accent); }
.card-meta { display: flex; gap: 10px; align-items: center; font-size: 12.5px; color: var(--muted); }
.card-meta .cat { background: var(--accent-soft); color: var(--accent); padding: 1px 8px; border-radius: 999px; font-weight: 600; }
.card-title { margin: 8px 0 6px; font-size: 19px; line-height: 1.45; }
.card-title a { color: inherit; text-decoration: none; }
.card-title a:hover { color: var(--accent); }
.card-sum { margin: 0; color: var(--muted); font-size: 14.5px; }
.card-tags { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap; }

.chip {
  font-size: 12.5px; text-decoration: none; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.big { font-size: 14px; padding: 5px 13px; }
.chip.big em { font-style: normal; color: var(--accent); margin-left: 5px; }
.chip-cloud { display: flex; flex-wrap: wrap; gap: 9px; padding: 20px 0 40px; }

.pager { display: flex; justify-content: center; gap: 14px; padding: 10px 0 46px; align-items: center; }
.pager a { color: var(--accent); text-decoration: none; font-size: 14px; }
.pg-cur { color: var(--muted); font-size: 14px; }

/* ---------- post ---------- */
.post { padding: 34px 0 20px; }
.post-head h1 { margin: 0 0 10px; font-size: 27px; line-height: 1.4; }
.post-meta { display: flex; gap: 9px; align-items: center; font-size: 13px; color: var(--muted); flex-wrap: wrap; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.post-meta .cat { background: var(--accent-soft); color: var(--accent); padding: 1px 8px; border-radius: 999px; font-weight: 600; }

.prose { font-size: 16.5px; line-height: 1.85; }
.prose h2 { margin: 34px 0 12px; font-size: 21px; padding-left: 11px; border-left: 3px solid var(--accent); line-height: 1.4; }
.prose h2, .prose h3, .prose h4, .prose h5, .prose h6 { scroll-margin-top: 76px; }
.prose h3 { margin: 26px 0 10px; font-size: 18px; }
.prose h4, .prose h5, .prose h6 { margin: 20px 0 8px; font-size: 16px; }
.prose h2 .anchor, .prose h3 .anchor { color: var(--line); text-decoration: none; margin-left: 6px; font-weight: 400; }
.prose h2:hover .anchor, .prose h3:hover .anchor { color: var(--accent); }
.prose p { margin: 14px 0; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 26px; margin: 14px 0; }
.prose li { margin: 6px 0; }
.prose li > ul, .prose li > ol { margin: 6px 0; }
.prose img { max-width: 100%; border-radius: 8px; border: 1px solid var(--line); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 30px 0; }
.prose blockquote {
  margin: 18px 0; padding: 10px 18px; background: var(--accent-soft);
  border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; color: var(--text);
}
.prose blockquote p:first-child { margin-top: 0; }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose code {
  background: var(--code-bg); padding: 2px 6px; border-radius: 5px;
  font: 14.5px/1.6 ui-monospace, "SF Mono", Consolas, "Liberation Mono", monospace;
}
.post-nav { display: flex; justify-content: space-between; gap: 14px; margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); }
.post-nav .adj { text-decoration: none; color: inherit; max-width: 46%; display: flex; flex-direction: column; }
.post-nav .adj span { font-size: 12px; color: var(--muted); }
.post-nav .adj b { font-weight: 600; font-size: 14.5px; }
.post-nav .adj:hover b { color: var(--accent); }

/* ---------- code block ---------- */
.code-block { margin: 20px 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--code-bg); }
.code-head { display: flex; justify-content: space-between; align-items: center; padding: 6px 12px; border-bottom: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.copy-btn { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 6px; padding: 2px 10px; font-size: 12px; cursor: pointer; }
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.code-block pre { margin: 0; padding: 14px 16px; overflow-x: auto; }
.code-block code { background: none; padding: 0; font-size: 13.5px; line-height: 1.7; }

.table-wrap { overflow-x: auto; margin: 20px 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.prose th { background: var(--code-bg); font-weight: 600; }
.prose tbody tr:nth-child(even) { background: rgba(128,128,128,.04); }

/* ---------- files ---------- */
.page-title { font-size: 25px; margin: 34px 0 6px; }
.page-note { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.ftable { border-collapse: collapse; width: 100%; font-size: 14.5px; margin-bottom: 40px; }
.ftable th { text-align: left; color: var(--muted); font-weight: 600; font-size: 12.5px; border-bottom: 1px solid var(--line); padding: 8px 6px; }
.ftable td { border-bottom: 1px solid var(--line); padding: 11px 6px; vertical-align: top; }
.ftable .num { text-align: right; color: var(--muted); white-space: nowrap; }
.ftable .when { color: var(--muted); white-space: nowrap; font-size: 13px; }
.fname a { color: var(--text); text-decoration: none; font-weight: 600; }
.fname a:hover { color: var(--accent); }
.fnote { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.muted { color: var(--line); }
.ops { white-space: nowrap; }
.mini {
  display: inline-block; font-size: 12.5px; text-decoration: none; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--muted);
  border-radius: 6px; padding: 3px 10px; margin-left: 4px;
}
.mini:hover { color: var(--accent); border-color: var(--accent); }
.mini.danger:hover { color: #c92a2a; border-color: #c92a2a; }

.uploader { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin: 10px 0 26px; }
.uploader h2 { margin: 0 0 12px; font-size: 17px; }
#upform { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
#upform input[type=file] { flex: 1 1 220px; font-size: 14px; }
#upform input[type=text] { flex: 1 1 100%; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 14px; }
#upform button, .login-box button {
  background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: 9px 22px; font-size: 14.5px; cursor: pointer; font-weight: 600;
}
#upform button:hover { filter: brightness(1.08); }
.hint { font-size: 12.5px; color: var(--muted); margin: 10px 0 0; }
.warn { font-size: 13px; color: #c92a2a; margin: 8px 0 0; }
.err { color: #c92a2a; font-size: 14px; }
progress { width: 100%; height: 6px; }

/* ---------- misc ---------- */
.empty { text-align: center; color: var(--muted); padding: 44px 20px; border: 1px dashed var(--line); border-radius: 12px; margin: 20px 0 40px; }
.empty h3 { margin: 0 0 8px; color: var(--text); }
.login-box { max-width: 420px; margin: 70px auto; text-align: center; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 34px 30px; }
.login-box h1 { margin: 0 0 8px; font-size: 22px; }
.login-box form { display: flex; flex-direction: column; gap: 12px; margin-top: 20px; }
.login-box input { padding: 11px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 15px; }
.arch { margin-bottom: 26px; }
.arch h2 { font-size: 16px; color: var(--accent); margin: 26px 0 8px; }
.arch ul { list-style: none; padding: 0; margin: 0; }
.arch li { display: flex; gap: 14px; padding: 6px 0; border-bottom: 1px dotted var(--line); }
.arch time { color: var(--muted); font-size: 13px; flex: none; }
.arch a { color: inherit; text-decoration: none; }
.arch a:hover { color: var(--accent); }

/* ---------- 文件分享页 ---------- */
.share-box {
  max-width: 540px; margin: 56px auto; background: var(--surface);
  border: 1px solid var(--line); border-radius: 16px; padding: 28px;
  box-shadow: var(--shadow);
}
.share-head { display: flex; gap: 16px; align-items: center; }
.share-badge {
  width: 56px; height: 64px; flex: none; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 700; letter-spacing: .04em;
}
.share-info h1 { margin: 0 0 4px; font-size: 17px; line-height: 1.45; word-break: break-all; }
.share-info p { margin: 0; color: var(--muted); font-size: 13px; }
.share-note {
  margin: 18px 0 0; padding: 10px 13px; background: var(--bg);
  border-radius: 8px; font-size: 13.5px; color: var(--muted);
}
.share-form { display: flex; gap: 10px; margin-top: 24px; flex-wrap: wrap; }
.share-form.stack { flex-direction: column; }
.share-form input, .share-form select {
  flex: 1 1 160px; min-width: 0; padding: 11px 14px; border: 1px solid var(--line);
  border-radius: 9px; background: var(--bg); color: var(--text); font-size: 15px;
}
.share-form input[name=code] {
  letter-spacing: .18em; text-transform: uppercase;
  font: 600 16px/1 ui-monospace, Consolas, monospace;
}
.share-form button {
  flex: none; background: var(--accent); color: #fff; border: 0;
  border-radius: 9px; padding: 11px 22px; font-size: 14.5px; font-weight: 600; cursor: pointer;
}
.share-form button:hover { filter: brightness(1.08); }
.btn-dl {
  display: block; text-align: center; margin-top: 24px; padding: 13px;
  background: var(--accent); color: #fff; text-decoration: none;
  border-radius: 10px; font-weight: 600; font-size: 15px;
}
.btn-dl:hover { filter: brightness(1.08); }
.share-result { margin-top: 22px; display: flex; flex-direction: column; }
.share-result label { font-size: 12.5px; color: var(--muted); margin: 12px 0 6px; }
.copy-row { display: flex; gap: 8px; }
.copy-row input {
  flex: 1; min-width: 0; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--bg); color: var(--text);
  font: 13.5px ui-monospace, Consolas, monospace;
}
.copy-row button {
  flex: none; border: 1px solid var(--line); background: var(--surface);
  color: var(--muted); border-radius: 8px; padding: 0 16px; cursor: pointer; font-size: 13px;
}
.copy-row button:hover { color: var(--accent); border-color: var(--accent); }
.state { font-size: 12.5px; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.state.ok { background: #e8f5e9; color: #2e7d32; }
.state.off { background: var(--code-bg); color: var(--muted); }
.state.warn { background: #fff3cd; color: #8a6d3b; }
tr.dim { opacity: .55; }
@media (prefers-color-scheme: dark) {
  .state.ok { background: #16301a; color: #7ec98a; }
  .state.warn { background: #3a2f15; color: #e0bf7a; }
}

.site-foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 22px 0 34px; font-size: 12.5px; color: var(--muted); }
.site-foot .dot { margin: 0 7px; }

@media (max-width: 620px) {
  .head-in { flex-direction: column; align-items: flex-start; gap: 10px; }
  .hero { padding: 26px 0 10px; }
  .hero h1 { font-size: 24px; }
  .post-head h1 { font-size: 21px; }
  .prose { font-size: 16px; }
  .ftable .when, .ftable th:nth-child(4) { display: none; }
}

/* ---------- 后台 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 18px 0 6px; }
.stat { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; text-decoration: none; color: inherit; transition: .15s; }
.stat:hover { border-color: var(--accent); transform: translateY(-1px); }
.stat b { font-size: 21px; font-weight: 700; }
.stat span { font-size: 12.5px; color: var(--muted); }
.quick { display: flex; flex-wrap: wrap; gap: 9px; margin: 20px 0 8px; }
.quick-btn { padding: 9px 17px; border: 1px solid var(--line); border-radius: 9px; text-decoration: none; color: var(--text); font-size: 14px; background: var(--surface); }
.quick-btn:hover { border-color: var(--accent); color: var(--accent); }
.quick-btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
.quick-btn.primary:hover { filter: brightness(1.08); color: #fff; }
.sub-title { font-size: 16px; margin: 26px 0 8px; }
.tabs { display: flex; gap: 6px; margin: 14px 0 16px; flex-wrap: wrap; }
.tab { padding: 6px 14px; border-radius: 999px; text-decoration: none; font-size: 13.5px; color: var(--muted); border: 1px solid var(--line); }
.tab.on { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
.tab:hover { border-color: var(--accent); color: var(--accent); }
.tab.on:hover { color: #fff; }
.filter { display: flex; gap: 8px; margin-bottom: 14px; }
.filter input { flex: 1; min-width: 0; padding: 9px 13px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 14px; }
.filter button { padding: 9px 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--text); cursor: pointer; font-size: 14px; }
.tag-pill { font-size: 12px; padding: 2px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.tag-pill.priv { background: rgba(198, 40, 40, .12); color: #c92a2a; }
.ok { color: #2e7d32; font-size: 14px; }
@media (prefers-color-scheme: dark) { .ok { color: #7ec98a; } }

/* ---------- 编辑器 ---------- */
.editor { display: flex; flex-direction: column; gap: 14px; }
.editor.narrow { max-width: 460px; margin-top: 18px; }
.editor label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.editor input[type=text], .editor input[type=password], .editor textarea, .editor select {
  padding: 10px 13px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--bg); color: var(--text); font-size: 15px; font-family: inherit; width: 100%;
}
.editor .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.editor .radios { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; color: var(--text); flex-direction: row; align-items: center; }
.editor .radios label { flex-direction: row; align-items: center; gap: 5px; }
.ed-toolbar { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.ed-toolbar .tool { padding: 5px 11px; font-size: 12.5px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); border-radius: 7px; cursor: pointer; }
.ed-toolbar .tool:hover { color: var(--accent); border-color: var(--accent); }
.ed-body { font: 14px/1.75 ui-monospace, "SF Mono", Consolas, monospace !important; min-height: 380px; resize: vertical; }
.ed-actions { display: flex; gap: 10px; align-items: center; }
.btn-primary { background: var(--accent); color: #fff; border: 0; border-radius: 9px; padding: 10px 26px; font-size: 14.5px; font-weight: 600; cursor: pointer; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { padding: 10px 20px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--text); font-size: 14px; cursor: pointer; text-decoration: none; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.preview-box { margin-top: 26px; padding: 22px 24px; border: 1px dashed var(--accent); border-radius: 12px; background: var(--surface); }
.preview-box[hidden] { display: none; }