:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #1e3a8a;
  --border: #e5e7eb;
  --shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html {
  overflow: hidden;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-y: auto;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.tool-page {
  display: grid;
  gap: 18px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: 24px;
  font-weight: 800;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}

.section-title {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
}

.section-sub {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
}

.section-sub.small-gap {
  margin: 2px 0 8px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
}

.field-label {
  font-size: 12px;
  color: var(--muted);
}

.input {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  background: #fbfbfd;
}

.file-input {
  padding: 8px;
}

.checkline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin: 10px 0;
}

.optional-block {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 10px;
  margin-bottom: 8px;
  background: #f8fafc;
}

.format-note {
  margin: 4px 0 10px;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #ffffff;
  padding: 8px 10px;
}

.format-note-title {
  font-size: 12px;
  font-weight: 700;
  color: #334155;
  margin-bottom: 4px;
}

.format-note ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
  color: #475569;
  line-height: 1.5;
}

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 13px;
}

.radio-row label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: background 150ms ease;
}

.btn.secondary {
  background: #e5e7eb;
  color: #1f2937;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.top-gap {
  margin-top: 8px;
}

.msg {
  font-size: 13px;
  color: #b45309;
  min-height: 18px;
  margin-top: 8px;
}

.result-meta {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.6;
}

.warn-list {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 12px;
  color: #92400e;
}

.warn-list:empty {
  display: none;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f9fafb;
  padding: 8px;
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 860px;
}

th, td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: left;
  font-size: 13px;
  background: #fff;
  vertical-align: top;
}

th {
  background: #f3f4f6;
  font-weight: 700;
}

.placeholder {
  color: var(--muted);
}

@media (max-width: 640px) {
  table {
    min-width: 740px;
  }
}