:root {
  --ink: #17211b;
  --muted: #66726b;
  --line: #d8ded9;
  --paper: #f5f7f4;
  --card: #ffffff;
  --primary: #1d5c43;
  --primary-2: #e7f1eb;
  --warn: #9a6500;
  --warn-bg: #fff5d9;
  --bad: #a92e2e;
  --bad-bg: #fdeaea;
  --unknown: #5f6670;
  --shadow: 0 12px 30px rgba(25, 45, 33, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.55; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: var(--primary); }
.topbar { display: flex; justify-content: space-between; gap: 24px; padding: 28px 36px 22px; background: #10251b; color: white; }
.topbar h1 { margin: 2px 0 6px; font-size: clamp(26px, 3vw, 42px); letter-spacing: -0.03em; }
.topbar p { margin: 0; max-width: 840px; color: #cbd9d1; }
.eyebrow, .step-label { color: #78b493; font-size: 12px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.top-actions { display: flex; align-items: flex-start; gap: 8px; flex-wrap: wrap; }
.safety-banner { padding: 12px 36px; background: #fff1cc; border-bottom: 1px solid #ead596; color: #604600; }
.layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); min-height: calc(100vh - 160px); }
.sidebar { padding: 24px 18px; border-right: 1px solid var(--line); background: #eef2ee; position: sticky; top: 0; height: 100vh; overflow: auto; }
.progress-card { background: var(--card); border: 1px solid var(--line); padding: 14px; border-radius: 14px; margin-bottom: 16px; }
.progress-card span { color: var(--muted); font-size: 13px; }
.progress-card strong { float: right; }
.progress-track { height: 7px; background: #e2e7e3; border-radius: 99px; margin-top: 10px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--primary); transition: width .25s ease; }
#nav { display: grid; gap: 5px; }
.nav-button { width: 100%; text-align: left; border: 0; background: transparent; border-radius: 10px; padding: 10px 12px; color: #465149; }
.nav-button:hover, .nav-button.active { background: white; color: var(--primary); box-shadow: 0 4px 12px rgba(0,0,0,.04); }
.nav-button.done::after { content: "✓"; float: right; color: var(--primary); font-weight: 800; }
.text-button { border: 0; background: transparent; margin-top: 18px; padding: 8px 12px; }
.danger { color: var(--bad); }
main { padding: 28px 32px 60px; max-width: 1500px; width: 100%; }
.page { display: none; }
.page.active { display: block; animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } }
.page-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 18px; }
.page-heading h2 { margin: 2px 0 0; font-size: clamp(24px, 2.5vw, 34px); letter-spacing: -0.025em; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; box-shadow: var(--shadow); margin-bottom: 18px; }
.card h3 { margin: 0 0 12px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 18px; }
.hero-card { background: linear-gradient(145deg, #fff, #eaf2ed); }
.plain-steps { padding-left: 20px; }
.plain-steps li { margin: 8px 0; }
.evidence-images { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.evidence-images figure { margin: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #f7f8f7; }
.evidence-images img { display: block; width: 100%; height: 190px; object-fit: cover; }
.evidence-images figcaption { padding: 10px; font-size: 12px; color: var(--muted); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 18px 0; }
.stat { background: white; border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.stat span { color: var(--muted); font-size: 13px; }
.stat strong { display: block; font-size: 28px; margin-top: 4px; }
.next-action { padding: 14px; border-left: 4px solid var(--primary); background: var(--primary-2); border-radius: 8px; }
.button { border-radius: 10px; padding: 9px 14px; border: 1px solid transparent; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.button.primary { color: white; background: var(--primary); }
.button.primary:hover { filter: brightness(.95); }
.button.secondary { background: white; border-color: var(--line); color: var(--ink); }
.file-button input { display: none; }
.status-pill, .level-pill { display: inline-flex; align-items: center; border-radius: 99px; padding: 5px 9px; background: #e7ece8; font-size: 12px; font-weight: 800; }
.status-pill.good, .level-pill.good { background: #dff3e6; color: #1a623b; }
.status-pill.warn, .level-pill.warn { background: var(--warn-bg); color: var(--warn); }
.status-pill.bad, .level-pill.bad { background: var(--bad-bg); color: var(--bad); }
.status-pill.unknown, .level-pill.unknown { background: #eceef1; color: var(--unknown); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.form-grid.compact { grid-template-columns: repeat(3, 1fr); }
.form-grid label { display: grid; gap: 6px; font-weight: 700; font-size: 13px; }
.form-grid input, .form-grid select, .form-grid textarea, .chat-form textarea { width: 100%; border: 1px solid #cfd6d1; border-radius: 9px; padding: 10px 11px; background: white; color: var(--ink); }
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus, .chat-form textarea:focus { outline: 3px solid rgba(29,92,67,.14); border-color: var(--primary); }
.span-2 { grid-column: span 2; }
.checkbox { display: flex !important; grid-template-columns: auto 1fr !important; align-items: flex-start; gap: 9px !important; font-weight: 500 !important; }
.checkbox input { width: auto; margin-top: 4px; }
.tip { background: #f9fbf9; box-shadow: none; }
.table-wrap { overflow-x: auto; padding: 0; }
table { width: 100%; border-collapse: collapse; min-width: 850px; }
th, td { padding: 12px 13px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 13px; }
th { background: #f3f6f3; color: #4a554e; position: sticky; top: 0; }
tr:last-child td { border-bottom: 0; }
.empty-cell { text-align: center; color: var(--muted); padding: 30px; }
.row-delete { border: 0; background: transparent; color: var(--bad); }
.split-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
.result-card { min-height: 260px; }
.empty-state { color: var(--muted); display: grid; place-items: center; text-align: center; }
.result-level { font-size: 24px; margin-bottom: 10px; }
.result-card ul { padding-left: 20px; }
.card-heading { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.card-heading p { margin: 3px 0 0; color: var(--muted); }
.procurement-list { display: grid; gap: 10px; margin-top: 14px; }
.release-card.good { background: #e5f5ea; border-color: #9ccbad; color: #164c2f; }
.release-card.bad { background: var(--bad-bg); border-color: #edbaba; color: var(--bad); }
.release-card p { margin-bottom: 0; }
.procurement-item { border: 1px solid var(--line); border-radius: 12px; padding: 13px; display: grid; grid-template-columns: 1fr auto; gap: 12px; }
.procurement-item p { margin: 4px 0 0; color: var(--muted); }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.warning-stack { display: grid; gap: 8px; margin-bottom: 14px; }
.warning { background: var(--warn-bg); border: 1px solid #edd898; color: #704f00; border-radius: 10px; padding: 10px 12px; }
.warning.bad { background: var(--bad-bg); border-color: #edbaba; color: var(--bad); }
.checklist { display: grid; gap: 8px; }
.check-row { display: flex; gap: 10px; padding: 10px; border-bottom: 1px solid var(--line); }
.check-row:last-child { border-bottom: 0; }
.source-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.source-card { margin: 0; box-shadow: none; }
.source-card p { color: var(--muted); }
.source-card small { display: block; color: var(--muted); margin-top: 8px; }
.assistant-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 18px; }
.chat-card { padding: 0; overflow: hidden; }
.chat-log { min-height: 480px; max-height: 62vh; overflow: auto; padding: 20px; display: grid; gap: 12px; background: #f8faf8; }
.message { max-width: 85%; padding: 12px 14px; border-radius: 14px; white-space: pre-wrap; }
.message.user { margin-left: auto; background: var(--primary); color: white; border-bottom-right-radius: 3px; }
.message.assistant { background: white; border: 1px solid var(--line); border-bottom-left-radius: 3px; }
.message small { display: block; opacity: .65; margin-top: 6px; }
.chat-form { border-top: 1px solid var(--line); padding: 14px; display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.context-card ul { padding-left: 20px; }
.muted { color: var(--muted); font-size: 13px; }

@media (max-width: 1050px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  #nav { grid-template-columns: repeat(4, 1fr); }
  .nav-button { text-align: center; }
  .hero-grid, .split-grid, .assistant-layout { grid-template-columns: 1fr; }
  .form-grid.compact { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .topbar { padding: 22px 18px; display: block; }
  .top-actions { margin-top: 16px; }
  .safety-banner { padding: 12px 18px; }
  main { padding: 22px 14px 50px; }
  #nav { grid-template-columns: repeat(2, 1fr); }
  .stats-grid, .source-grid, .check-grid, .evidence-images { grid-template-columns: 1fr; }
  .form-grid, .form-grid.compact { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .page-heading { align-items: flex-start; flex-direction: column; }
  .chat-form { grid-template-columns: 1fr; }
  .message { max-width: 95%; }
}
@media (max-width: 640px) {
  .layout { display: block; }
  .sidebar { position: static; height: auto; padding: 12px 10px; overflow: visible; }
  #nav { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x proximity; }
  .nav-button { flex: 0 0 auto; width: auto; min-height: 44px; white-space: nowrap; scroll-snap-align: start; }
  .table-wrap { width: 100%; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  button, .button { min-height: 44px; }
}
@media print {
  .sidebar, .top-actions, .button, .text-button, .chat-form { display: none !important; }
  .layout { display: block; }
  .page { display: block !important; break-before: page; }
  .page:first-of-type { break-before: auto; }
  body { background: white; }
  main { max-width: none; padding: 0; }
  .card { box-shadow: none; break-inside: avoid; }
}