:root{
  --oi-ink:#122033;
  --oi-muted:#667386;
  --oi-line:#dce3ea;
  --oi-paper:#ffffff;
  --oi-wash:#f3f6f8;
  --oi-blue:#1746d1;
  --oi-blue-soft:#eaf0ff;
  --oi-coral:#ff6b4a;
  --oi-success:#197452;
  --oi-shadow:0 12px 36px rgba(18,32,51,.08);
}

body{
  color:var(--oi-ink);
  background:var(--oi-wash);
  font-family:"Aptos","Microsoft YaHei","PingFang SC",sans-serif;
}

.topbar{
  min-height:68px !important;
  height:auto !important;
  padding:10px 18px !important;
  gap:14px !important;
  border-bottom:1px solid var(--oi-line) !important;
  background:rgba(255,255,255,.96) !important;
  box-shadow:0 6px 24px rgba(18,32,51,.06) !important;
  backdrop-filter:blur(14px);
}

.topbar .brand{
  min-width:250px;
  align-items:center;
  gap:12px;
}

.topbar .logo{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:42px;
  min-height:42px;
  padding:0 10px;
  border-radius:13px;
  background:var(--oi-ink);
  color:#fff !important;
  font-family:Georgia,"Noto Serif SC",serif;
  font-size:15px !important;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1;
}

.topbar .meta-line{
  color:var(--oi-muted) !important;
  font-size:12px !important;
  font-weight:700;
  letter-spacing:.01em;
}

.topbar .meta-red{
  display:inline-flex;
  align-items:center;
  min-height:24px;
  padding:0 8px;
  margin:0 4px;
  border-radius:999px;
  background:var(--oi-blue-soft);
  color:var(--oi-blue) !important;
  font-size:11px;
  font-weight:800;
}

.topbar .timer{
  margin-top:3px;
  color:var(--oi-ink) !important;
  font-variant-numeric:tabular-nums;
  font-size:18px !important;
  font-weight:850 !important;
  letter-spacing:.02em;
}

.topbar .actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:8px !important;
  flex-wrap:wrap;
}

.topbar .btn,
.topbar .icon{
  min-height:40px !important;
  border:1px solid var(--oi-line) !important;
  border-radius:11px !important;
  background:#fff !important;
  color:var(--oi-ink) !important;
  box-shadow:none !important;
  font-weight:750 !important;
  transition:transform .16s ease,border-color .16s ease,background .16s ease;
}

.topbar .btn:hover,
.topbar .icon:hover{
  transform:translateY(-1px);
  border-color:#aeb9c7 !important;
}

.topbar .actions [id*="submit" i],
.topbar .actions button[onclick*="submit" i]{
  border-color:var(--oi-blue) !important;
  background:var(--oi-blue) !important;
  color:#fff !important;
}

.topbar .actions [id*="reset" i],
.topbar .actions button[onclick*="reset" i]{
  color:var(--oi-muted) !important;
}

.audiobar{
  min-height:44px;
  border:1px solid var(--oi-line) !important;
  border-radius:999px !important;
  background:#f7f9fb !important;
  box-shadow:none !important;
}

.pane,
.part-banner{
  border-color:var(--oi-line) !important;
  box-shadow:var(--oi-shadow) !important;
}

.pane-header{
  min-height:46px;
  color:var(--oi-ink) !important;
  background:#fbfcfd !important;
  border-color:var(--oi-line) !important;
}

.bottombar{
  border-top:1px solid var(--oi-line) !important;
  background:rgba(255,255,255,.97) !important;
  box-shadow:0 -8px 30px rgba(18,32,51,.07) !important;
  backdrop-filter:blur(12px);
}

.qbtn,
.part-chip,
.bottom-part-nav button,
.bottom-part-nav .part-tab,
.task-tab{
  border-color:var(--oi-line) !important;
  border-radius:9px !important;
  font-weight:750 !important;
}

.qbtn.active,
.qbtn.is-active,
.bottom-part-nav .active,
.bottom-part-nav .is-active,
.task-tab.active,
.task-tab.is-active{
  border-color:var(--oi-blue) !important;
  background:var(--oi-blue-soft) !important;
  color:var(--oi-blue) !important;
}

.oi-retry-banner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin:10px 14px 0;
  padding:10px 14px;
  border:1px solid #ffd3c8;
  border-radius:12px;
  background:#fff5f1;
  color:#7e2f1e;
  font-size:13px;
}

.oi-retry-banner strong{color:#4d2117}
.oi-retry-banner span{color:#94513f}

.oi-retry-target{
  position:relative;
  border-radius:10px;
  box-shadow:0 0 0 2px rgba(255,107,74,.35);
}

.oi-retry-muted{
  opacity:.38;
  filter:grayscale(.45);
  pointer-events:none;
}

@media (max-width:900px){
  .topbar{align-items:flex-start !important}
  .topbar .brand{min-width:0;flex:1 1 220px}
  .topbar .audiobar{order:3;width:100%}
  .topbar .actions{flex:1 1 auto}
  .topbar .actions .btn{padding-left:10px !important;padding-right:10px !important}
}

@media (max-width:620px){
  .topbar{padding:8px 10px !important}
  .topbar .logo{min-width:38px;min-height:38px}
  .topbar .meta-line{max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar .actions{width:100%;justify-content:flex-start}
  .topbar .actions .btn{flex:1 1 auto}
  .oi-retry-banner{margin:8px 10px 0;align-items:flex-start;flex-direction:column;gap:4px}
}