:root { --bg:#f6f7fb; --card:#fff; --ink:#1d2330; --sub:#5b6472; --brand:#3b6ef6; --ok:#1a9b57; }
* { box-sizing: border-box; margin: 0; }
body { font-family: system-ui, "Segoe UI", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--ink); min-height: 100vh; }
.wrap { max-width: 900px; margin: 0 auto; padding: 32px 18px 64px; }
header h1 { font-size: 26px; }
header p  { color: var(--sub); margin-top: 6px; font-size: 14px; }
.crumbs { font-size: 13px; color: var(--sub); margin-bottom: 10px; }
.crumbs a { color: var(--brand); text-decoration: none; }
.pill { display:inline-block; background:#e8f7ef; color:var(--ok); border-radius: 999px; padding: 3px 10px; font-size:12px; margin-top: 10px; }
.cardgrid { display:grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 14px; margin-top: 20px; }
.card { background: var(--card); border:1px solid #e6e9f0; border-radius: 14px; padding: 20px; text-decoration:none; color:inherit; display:block; transition: .15s; }
.card:hover { border-color: var(--brand); box-shadow: 0 4px 14px rgba(59,110,246,.08); }
.card h2 { font-size: 17px; }
.card p  { color: var(--sub); font-size: 13px; margin-top: 6px; line-height: 1.6; }
.tool { background: var(--card); border: 1px solid #e6e9f0; border-radius: 14px; padding: 20px; margin-top: 18px; }
.tool h2 { font-size: 17px; display:flex; align-items:center; gap:8px; }
.tool .hint { color: var(--sub); font-size: 13px; margin: 6px 0 12px; }
input[type=file] { font-size: 14px; }
input[type=text], input[type=number], textarea, select {
  padding:8px; border-radius:8px; border:1px solid #d7dbe7; font-size:14px; font-family:inherit; width:100%;
}
textarea { min-height: 140px; resize: vertical; }
textarea.small { min-height: 90px; }
.btn { background: var(--brand); color:#fff; border:none; border-radius: 9px; padding: 10px 18px; font-size: 14px; cursor: pointer; }
.btn:disabled { background: #c3cadd; cursor: not-allowed; }
.row { display:flex; gap:10px; flex-wrap: wrap; align-items: center; }
ul.files { margin: 10px 0; padding-left: 18px; font-size: 14px; }
ul.files li { margin: 3px 0; }
.result a { color: var(--ok); font-weight: 600; text-decoration:none; font-size:14px; }
#status, .status { color: var(--sub); font-size: 13px; min-height: 18px; margin-top:8px; }
footer { color: var(--sub); font-size: 12px; margin-top: 40px; text-align: center; line-height: 1.7; }
label.opt { font-size:13px; color:var(--sub); display:flex; align-items:center; gap:6px; }
.mono { font-family: ui-monospace, Consolas, monospace; font-size: 13px; word-break: break-all; }