:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --border: #d5deea;
  --text: #152033;
  --muted: #5b6b82;
  --accent: #1f6feb;
  --accent-soft: #dbe8ff;
  --ok: #0f7b45;
  --warn: #9a6700;
  --danger: #c62828;
  --radius: 12px;
  font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(900px 420px at 8% -8%, #d9e6ff 0%, transparent 55%),
    radial-gradient(700px 380px at 100% 0%, #e7f3ea 0%, transparent 50%),
    var(--bg);
}
.wrap { max-width: 920px; margin: 0 auto; padding: 28px 18px 72px; }
header { margin-bottom: 14px; }
.brand-row { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; color: #fff; font-weight: 700;
  background: linear-gradient(135deg, #1f6feb, #2ea043);
}
h1 { margin: 0; font-size: 1.5rem; letter-spacing: -0.02em; }
.sub { margin: 8px 0 0; color: var(--muted); line-height: 1.5; }
.privacy, .disclaimer {
  margin: 0 0 16px; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid #c9d9b8; background: #f3f8ec; color: #3d5a2a;
  font-size: 0.92rem; line-height: 1.45;
}
.disclaimer { border-color: #e6d3a3; background: #fff8e8; color: #6b5320; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 14px;
}
.card h2 { margin: 0 0 12px; font-size: 1.05rem; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; min-width: 140px; }
label.grow { flex: 1; min-width: 220px; }
label.inline { flex-direction: row; align-items: center; gap: 6px; min-width: auto; }
input, textarea, select {
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
  font: inherit; background: #fff; color: var(--text);
}
textarea { min-height: 140px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.btn {
  border: 1px solid var(--border); background: #fff; color: var(--text);
  border-radius: 8px; padding: 10px 14px; font: inherit; cursor: pointer;
}
.btn:hover { border-color: #9db2d1; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.status { margin: 10px 0 0; color: var(--muted); font-size: 0.9rem; min-height: 1.2em; }
.status.err { color: var(--danger); }
.status.ok { color: var(--ok); }
.status.warn { color: var(--warn); }
.drop {
  border: 1.5px dashed #9db2d1; border-radius: var(--radius);
  padding: 28px 16px; text-align: center; background: #f8fbff; cursor: pointer;
}
.drop:hover, .drop.drag { border-color: var(--accent); background: var(--accent-soft); }
.hint { color: var(--muted); font-size: 0.86rem; }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tab {
  border: 1px solid var(--border); background: #fff; border-radius: 999px;
  padding: 6px 12px; cursor: pointer; font: inherit;
}
.tab.active { background: var(--accent-soft); border-color: #8eb2ef; color: #134a9c; }
pre.out, .out {
  background: #0f1724; color: #e7eef7; border-radius: 8px; padding: 12px;
  overflow: auto; font-size: 0.85rem; line-height: 1.45; white-space: pre-wrap; word-break: break-word;
}
table.result { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.result th, table.result td {
  border-bottom: 1px solid var(--border); text-align: left; padding: 8px 6px; vertical-align: top;
}
.file-list { list-style: none; padding: 0; margin: 12px 0 0; }
.file-list li {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem;
}
.file-list .name { flex: 1; min-width: 160px; word-break: break-all; }
footer { margin-top: 28px; color: var(--muted); font-size: 0.85rem; }
.preview-img { max-width: 100%; border-radius: 8px; border: 1px solid var(--border); }
.meta { display: flex; flex-wrap: wrap; gap: 12px 18px; margin-top: 10px; font-size: 0.9rem; }
.meta strong { font-variant-numeric: tabular-nums; }
.chip {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  background: var(--accent-soft); color: #134a9c; font-size: 0.8rem;
}