:root {
  --primary: #1a9e5a;
  --primary-dark: #147a45;
  --bg: #f5f7fb;
  --card: #ffffff;
  --border: #e5e9f2;
  --text: #1f2a44;
  --muted: #7a869a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(1.6) blur(10px);
  -webkit-backdrop-filter: saturate(1.6) blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}
.logo img { display: block; height: 34px; width: auto; }

.brand h1 { font-size: 16px; margin: 0; font-weight: 700; letter-spacing: .2px; color: var(--text); }
.brand p { margin: 0; font-size: 12px; color: var(--muted); }

.topbar .spacer { flex: 1; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--primary-dark);
  background: #e9f9f0;
  border: 1px solid #cdebd9;
  padding: 5px 11px;
  border-radius: 999px;
  white-space: nowrap;
}

.pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 158, 90, .16);
}

@media (max-width: 640px) {
  .topbar-inner { padding: 12px 16px; gap: 10px; }
  .brand p { display: none; }
}

.container { max-width: 1180px; margin: 0 auto; padding: 32px 20px 64px; }

.title { font-size: 24px; font-weight: 700; margin: 0 0 8px; }
.desc { color: var(--muted); margin: 0 0 24px; font-size: 14px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 6px 24px rgba(31, 42, 68, .05);
}

.dropzone {
  border: 2px dashed #c9d3e6;
  border-radius: 10px;
  padding: 40px 16px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .2s, background .2s;
}

.dropzone:hover, .dropzone.dragover { border-color: var(--primary); background: #f2f6ff; }
.dz-icon { line-height: 0; margin-bottom: 10px; color: var(--primary); }
.dz-text { font-size: 15px; }
.link { color: var(--primary); font-weight: 600; }
.hint { font-size: 12px; color: var(--muted); margin-top: 8px; }

.format-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin: 20px 0 4px;
  padding: 14px 16px;
  background: #f7f9fe;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.format-label { font-size: 14px; font-weight: 600; color: var(--text); }
.fmt { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; cursor: pointer; }
.fmt input { accent-color: var(--primary); }

.list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 22px 0 12px;
  font-size: 15px;
  font-weight: 600;
}

.list-actions { display: flex; gap: 10px; }

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all .2s;
}

.btn:hover { border-color: #c9d3e6; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.filelist { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.filelist .empty { margin: 0; padding: 22px; text-align: center; color: var(--muted); font-size: 13px; }

.fileitem {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.fileitem:last-child { border-bottom: none; }
.fileitem .fname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fileitem .fsize { color: var(--muted); font-size: 12px; }
.fileitem .fstatus { font-size: 12px; color: #1a9e5a; }
.fileitem .fstatus.err { color: #d64545; }

.fileitem .dl {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
}
.fileitem .dl:hover { border-color: var(--primary); color: var(--primary); }

.preview-head { margin: 22px 0 10px; font-size: 15px; font-weight: 600; }

.preview {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  max-height: 420px;
  overflow: auto;
  background: #fcfdff;
  margin: 0;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12.5px;
  white-space: pre-wrap;
  word-break: break-word;
}

.preview .empty { color: var(--muted); font-family: inherit; }

.note { margin-top: 24px; font-size: 12px; color: var(--muted); text-align: center; }

.fmt-hint{margin:8px 0 0;padding:8px 12px;background:#eefaf3;border-left:3px solid var(--primary);border-radius:4px;color:#334155;font-size:13px;line-height:1.6;display:none;}

/* ---------- Panel ---------- */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(31, 42, 68, .05);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border);
}

.panel-head .ic {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  background: #e9f9f0;
  color: var(--primary);
}

.panel-head h2 { font-size: 14.5px; margin: 0; font-weight: 700; color: var(--text); }
.panel-head .hint { font-size: 12px; color: var(--muted); margin-left: auto; text-align: right; }
.panel-body { padding: 18px; }

/* ---------- 说明与常见问题（SEO / GEO 正文） ---------- */
.seo { margin-top: 24px; }
.seo .panel-body { display: grid; gap: 18px; padding-top: 16px; }
.seo code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12px;
  background: #e9f9f0;
  color: var(--primary-dark);
  padding: 1px 5px;
  border-radius: 5px;
}
.seo p { margin: 0; font-size: 13px; line-height: 1.75; color: var(--muted); }
.seo .lead { font-size: 13.5px; color: #334155; }
.seo .lead b { color: var(--text); font-weight: 600; }
.seo h3 { font-size: 14px; color: var(--text); margin: 0 0 8px; font-weight: 600; }
.seo ul, .seo ol { margin: 0; padding-left: 20px; }
.seo li { font-size: 13px; line-height: 1.8; color: var(--muted); }
.seo li b { color: #334155; font-weight: 600; }
.seo li + li { margin-top: 2px; }
.seo-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px 28px; }
.seo .note {
  font-size: 12.5px;
  color: var(--muted);
  border-left: 3px solid #cdebd9;
  padding-left: 10px;
  margin-top: 10px;
}
.seo details { border-top: 1px solid var(--border); padding: 9px 0; }
.seo details:first-of-type { border-top: 0; padding-top: 0; }
.seo summary {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.seo summary::-webkit-details-marker { display: none; }
.seo summary::before { content: "+"; flex: 0 0 auto; width: 14px; color: var(--primary); font-weight: 700; line-height: 1.6; }
.seo details[open] summary::before { content: "−"; }
.seo .faq-a { margin: 7px 0 0; padding-left: 22px; }

@media (max-width: 900px) {
  .seo .faq-a { padding-left: 0; }
  .panel-head .hint { display: none; }
}

/* ---------- WorkBuddy 推广（小程序码 + 商店链接） ---------- */
.promo { margin-top: 24px; }
.promo .panel-body { display: grid; justify-items: center; gap: 16px; text-align: center; }
.promo-qr {
  display: block;
  width: 400px;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.promo-text { width: 100%; max-width: 680px; }
.promo-text p { margin: 0 0 12px; font-size: 13px; line-height: 1.75; color: var(--muted); }
.promo-text p b { color: var(--text); font-weight: 600; }
.promo-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background .2s;
}
.promo-link:hover { background: var(--primary-dark); }

@media (max-width: 640px) {
  .promo .panel-body { gap: 14px; }
  .promo-qr { width: 260px; }
}

/* ---------- Footer ---------- */
footer.foot {
  max-width: 1180px;
  margin: 8px auto 40px;
  padding: 0 20px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
  line-height: 1.7;
}
footer.foot p { margin: 4px 0; }
footer.foot b { color: #334155; font-weight: 600; }
footer.foot a { color: var(--primary); text-decoration: none; }
footer.foot a:hover { text-decoration: underline; }