* { box-sizing: border-box; }
body { margin: 0; font-family: "Microsoft YaHei", -apple-system, Arial, sans-serif; background: #f4f6f9; color: #1f2a37; }
header { background: linear-gradient(120deg, #1a3a6b, #2b6cb0); color: #fff; padding: 26px 24px; }
header h1 { margin: 0 0 6px; font-size: 22px; }
header p { margin: 0; opacity: .85; font-size: 14px; }
main { max-width: 760px; margin: 22px auto; padding: 0 16px; }

.step { background: #fff; border: 1px solid #e2e8f0; border-radius: 10px; padding: 18px 20px; margin-bottom: 16px; }
.step.highlight { border-color: #2b6cb0; box-shadow: 0 2px 10px rgba(43,108,176,.12); }
.step-head { display: flex; align-items: center; gap: 10px; }
.step-head .num { background: #1a3a6b; color: #fff; font-size: 13px; font-weight: 700; border-radius: 6px; padding: 3px 9px; }
.step-head h2 { margin: 0; font-size: 16px; }
.step-head em { background: #ffe9c2; color: #a35b00; font-style: normal; font-size: 11px; padding: 2px 7px; border-radius: 4px; margin-left: 4px; }
.desc { color: #64748b; font-size: 13px; margin: 8px 0 12px; }

button { background: #2b6cb0; color: #fff; border: none; border-radius: 6px; padding: 9px 18px; font-size: 14px; cursor: pointer; }
button:hover { background: #245a94; }
input[type=file] { display: block; margin-bottom: 10px; font-size: 13px; }
.samples { font-size: 12px; color: #64748b; margin: 6px 0 10px; }
.samples a { color: #2b6cb0; margin: 0 8px; text-decoration: none; }
.samples a:hover { text-decoration: underline; }

.out { margin-top: 12px; font-size: 13px; line-height: 1.7; color: #334155; word-break: break-all; }
.out.ok { color: #146c43; }
.out.err { color: #b42318; }
.out code { background: #eef2f7; padding: 2px 6px; border-radius: 4px; }

.confirm { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.confirm.hidden, .hidden { display: none; }
.confirm label { display: flex; flex-direction: column; font-size: 12px; color: #64748b; gap: 3px; }
.confirm input { padding: 7px 9px; border: 1px solid #cbd5e1; border-radius: 5px; font-size: 13px; color: #1f2a37; }
#btn-confirm { margin-top: 12px; }

.fill-view { margin-top: 14px; }
.fill-view img { width: 100%; border: 1px solid #cbd5e1; border-radius: 8px; background: #eef1f4; min-height: 200px; }
.fill-log { margin-top: 10px; background: #0f172a; color: #cbd5e1; font-family: ui-monospace, Menlo, monospace; font-size: 12px; padding: 10px 12px; border-radius: 6px; height: 140px; overflow-y: auto; }
.fill-log .ok { color: #7ee2a8; }
.fill-log .err { color: #fca5a5; }