:root {
  color-scheme: light;
  --bg: #F7F4EE;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --line: #e4e4e7;
  --primary: #0d9488;
  --primary-hover: #0f766e;
  --primary-soft: #f0fdfa;
  --success: #047857;
  --success-soft: #ecfdf5;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --shadow: 0 1px 2px 0 rgba(0,0,0,.05);
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
button, input, select, textarea { font: inherit; font-size: .875rem; }
button { cursor: pointer; }
code { padding: 1px 5px; border-radius: 5px; background: #eef2f7; color: #475569; font-size: .75rem; }
.container { width: min(1280px, 100%); margin: 0 auto; padding: 0 16px; }
.site-header {
  border-bottom: 1px solid rgba(226,232,240,.8);
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 16px 0;
}
.header-inner { display: flex; align-items: center; gap: 16px; }
.header-brand { display: flex; align-items: baseline; flex-shrink: 0; line-height: 1; }
.brand-bold { font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif; font-size: 1.25rem; font-weight: 600; color: #0f172a; letter-spacing: -.025em; }
.brand-light { font-size: 1.25rem; font-weight: 300; color: #94a3b8; margin-left: .375rem; }
.header-divider { width: 1px; height: 36px; background: rgba(203,213,225,.8); flex-shrink: 0; }
.header-info { min-width: 0; }
h1 { margin: 0; font-size: 1.125rem; line-height: 1.25; font-weight: 600; color: #1e293b; }
h2 { margin: 0; font-size: 1rem; line-height: 1.25; font-weight: 600; }
p { margin: 0; }
.subtitle { margin-top: 2px; color: #64748b; font-size: .875rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.main-grid { display: grid; gap: 24px; margin-top: 24px; padding-bottom: 44px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  max-width: 100%;
  overflow: hidden;
}
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.heading-note { margin-top: 5px; color: var(--muted); font-size: .75rem; }
.analysis-field { margin-bottom: 14px; }
.form-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field > span:first-child { font-size: .875rem; font-weight: 500; color: var(--text); }
input, select {
  width: 100%; min-height: 38px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--text); padding: 5px 12px;
  outline: none; transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(13,148,136,.15); }
.mode-description { margin: 0 0 14px; color: var(--muted); font-size: .875rem; }
.button-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.button { min-height: 34px; border-radius: 8px; padding: 5px 12px; border: 1px solid transparent; font-size: .875rem; font-weight: 500; white-space: nowrap; display: inline-flex; align-items: center; justify-content: center; }
.button-small { min-height: 30px; font-size: .8rem; }
.button-primary { background: var(--primary); color: white; }
.button-primary:hover { background: var(--primary-hover); }
.button-ghost { background: var(--surface); color: #475569; border-color: var(--line); }
.button-ghost:hover { background: #f4f4f5; }
.file-button { cursor: pointer; }
.quick-input-card { margin-bottom: 14px; padding: 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface-soft); }
.quick-input-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.quick-input-heading strong { display: block; font-size: .875rem; }
.quick-input-heading span { display: block; margin-top: 2px; color: var(--muted); font-size: .72rem; }
.paste-area { width: 100%; min-height: 136px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--text); padding: 10px 12px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: .8rem; line-height: 1.55; resize: vertical; outline: none; }
.input-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.drop-zone { border: 1px dashed #cbd5e1; border-radius: 8px; background: var(--surface-soft); padding: 18px; margin-bottom: 14px; text-align: center; color: var(--muted); outline: none; transition: border-color .2s, background .2s; }
.drop-zone strong { display: block; color: #475569; font-size: .875rem; }
.drop-zone span { display: block; margin-top: 3px; font-size: .75rem; }
.drop-zone.dragging, .drop-zone:focus { border-color: var(--primary); background: var(--primary-soft); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; }
table { width: 100%; border-collapse: collapse; min-width: 680px; table-layout: auto; font-size: .875rem; }
th, td { text-align: left; vertical-align: middle; }
th { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .82rem; font-weight: 500; white-space: nowrap; position: sticky; top: 0; background: var(--surface); z-index: 1; }
td { padding: 8px 12px 8px 0; border-bottom: 1px solid #f1f5f9; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
.help-text { margin: 8px 2px 0; color: var(--muted); font-size: .75rem; }
.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin-bottom: 14px; }
.recommendation { display: none; margin-bottom: 14px; padding: 14px 16px; border: 1px solid #99f6e4; border-radius: 10px; background: var(--primary-soft); color: #115e59; font-size: .85rem; }
.recommendation.visible { display: block; }
.alerts { display: grid; gap: 6px; margin-bottom: 14px; }
.alerts:empty { margin-bottom: 0; }
.alert { padding: 10px 12px; border-radius: 8px; font-size: .8rem; }
.alert.warning { background: var(--warning-soft); color: var(--warning); }
.alert.error { background: var(--danger-soft); color: var(--danger); }
.alert.success { background: var(--success-soft); color: var(--success); }
.hidden { display: none !important; }
.site-footer { padding: 24px 0 calc(24px + env(safe-area-inset-bottom, 0)); color: #94a3b8; text-align: center; font-size: .75rem; }

/* 结果区（v7 结构，v6 外观） */
.result-block { margin-top: 18px; }
.result-block h3 { margin: 0 0 8px; font-size: .95rem; font-weight: 600; }
.muted { margin: 0 0 8px; color: var(--muted); font-size: .8rem; }
.summary-card {
  display: flex; flex-direction: column-reverse;
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-soft);
}
.summary-card span { display: block; color: var(--muted); font-size: .7rem; font-weight: 600; }
.summary-card strong { display: block; margin-top: 2px; font-size: 1rem; font-weight: 700; overflow-wrap: anywhere; }
.significant { color: var(--success); font-weight: 700; font-variant-numeric: tabular-nums; }
.not-significant { font-variant-numeric: tabular-nums; }

/* 编辑器（v7 结构，v6 外观） */
.editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 10px;
}
.pager { display: flex; align-items: center; gap: 8px; }
.pager span { color: var(--muted); font-size: .75rem; white-space: nowrap; }
.icon-button {
  width: 30px; height: 30px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--primary-hover); font-size: 1.1rem; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}
.icon-button:disabled { opacity: .4; cursor: not-allowed; }
.status-line { min-height: 20px; margin: 6px 0 8px; color: var(--muted); font-size: .75rem; }
.status-line.error { color: var(--danger); }
.status-line.warning { color: var(--warning); }
.editor-wrap {
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  max-height: 430px;
  overflow: auto;
}
.editor-table {
  min-width: 760px;
  table-layout: fixed;
  border-collapse: separate;
  border-spacing: 0;
}
.editor-table th,
.editor-table td {
  min-width: 132px;
  height: 36px;
  padding: 0;
  border-right: 1px solid #edf0f2;
  border-bottom: 1px solid #edf0f2;
  background: var(--surface);
}
.editor-table th {
  top: 0;
  z-index: 3;
  font-weight: 600;
  color: #475569;
  background: #f8fafc;
  padding: 6px 9px;
}
.editor-table thead th:first-child {
  width: 48px;
  min-width: 48px;
  max-width: 48px;
  position: sticky;
  left: 0;
  z-index: 5;
  text-align: center;
}
.editor-table .row-number {
  width: 48px;
  min-width: 48px;
  max-width: 48px;
  position: sticky;
  left: 0;
  z-index: 2;
  text-align: center;
  color: #94a3b8;
  background: #f8fafc;
  font-variant-numeric: tabular-nums;
  user-select: none;
  cursor: pointer;
  padding: 6px 9px;
}
.editor-table input {
  width: 100%;
  min-width: 0;
  min-height: 0;
  height: 36px;
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 6px 9px;
  box-shadow: none;
  outline: none;
}
.editor-table input:focus {
  box-shadow: inset 0 0 0 2px var(--primary);
  background: var(--primary-soft);
}
.editor-table .header-input { font-weight: 600; color: #334155; }
.editor-table th.selected,
.editor-table td.row-number.selected {
  background: var(--primary-soft);
  box-shadow: inset 0 0 0 2px var(--primary);
}

/* 方法说明 */
.notes-card { box-shadow: none; }
.notes-card ul { margin: 0; padding-left: 1.25rem; color: var(--muted); font-size: .8rem; }
.notes-card li + li { margin-top: 6px; }

/* 控件补充 */
.example-picker select {
  width: auto;
  min-width: 170px;
  min-height: 34px;
  background: var(--surface);
}
.button-danger-ghost {
  color: #b91c1c;
  border-color: #fecaca;
  background: #fff;
}
.button-danger-ghost:hover {
  color: #991b1b;
  border-color: #fca5a5;
  background: #fef2f2;
}
select:disabled {
  cursor: not-allowed;
  color: #94a3b8;
  background: #f8fafc;
}

@media (max-width: 768px) {
  .site-header { padding: 12px 0; }
  .main-grid { gap: 16px; margin-top: 16px; }
  .card { padding: 20px; }
  .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .header-inner { gap: 12px; }
  .header-divider { height: 32px; }
  .brand-bold, .brand-light { font-size: 1.125rem; }
  h1 { font-size: 1rem; }
  .subtitle { font-size: .75rem; }
  input, select, textarea { font-size: 1rem; }
  .editor-toolbar { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 480px) {
  .container { padding: 0 8px; overflow: hidden; }
  .main-grid { margin-top: 16px; gap: 16px; }
  .card { padding: 14px; }
  .section-heading, .quick-input-heading { align-items: flex-start; flex-direction: column; gap: 10px; }
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .summary-card { padding: 10px 12px; }
  .button-row, .input-actions { width: 100%; }
  .button-row .button, .input-actions .button { flex: 1 1 auto; }
  .mode-description { font-size: .8rem; }
  .alert { font-size: .76rem; }
  table { min-width: 620px; }
  .subtitle { white-space: normal; }
  .example-picker select {
    width: 100%;
    min-width: 0;
    flex: 1 1 100%;
  }
  .example-picker .file-button,
  .example-picker #loadExampleBtn {
    flex: 1 1 auto;
  }
}
@media print {
  .site-header, .button-row, .input-actions, .quick-input-card, .drop-zone, .notes-card, .site-footer, #analysisMode { display: none !important; }
  .card { box-shadow: none; border: 1px solid #ccc; padding: 12px; margin-bottom: 12px; }
  .table-wrap { overflow: visible; }
  table { min-width: auto; font-size: 10pt; }
  body { background: white; padding: 0; }
  .container { width: 100%; margin: 0; }
}