* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; }
body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f7fa;
    color: #263238;
}
#app { max-width: 1200px; margin: 0 auto; padding: 14px 18px 22px; }
.title {
    text-align: center;
    font-size: 23px;
    color: #1a3a6c;
    margin-bottom: 16px;
}

.compare {
    display: grid;
    grid-template-columns: 1fr 56px 1fr;
    gap: 0;
    align-items: start;
}
.col { padding: 4px 10px; }
.col h2 { font-size: 16px; text-align: center; margin-bottom: 12px; padding: 8px; border-radius: 8px; }
.col.rag h2 { background: #455a64; color: #fff; }
.col.graphrag h2 { background: #2e7d32; color: #fff; }

.pipe { display: flex; flex-direction: column; align-items: center; }
.box {
    width: 100%;
    max-width: 320px;
    text-align: center;
    padding: 9px 10px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: bold;
    border: 2px solid;
    position: relative;
    line-height: 1.3;
}
.box.sm { font-size: 12px; padding: 7px 8px; }
.box .sub { display: block; font-weight: normal; font-size: 11px; opacity: 0.85; }
.arrow { color: #90a4ae; font-size: 18px; line-height: 1; margin: 2px 0; }
.arrow.sm { font-size: 14px; }

/* Standard RAG: muted blue / gray tones */
.rag .box.user  { background: #cfd8dc; border-color: #78909c; color: #263238; }
.rag .box.proc  { background: #eceff1; border-color: #90a4ae; color: #37474f; }
.rag .box.store { background: #e0e0e0; border-color: #9e9e9e; color: #424242; }
.rag .box.data  { background: #eceff1; border-color: #90a4ae; color: #37474f; }
.rag .box.llm   { background: #b0bec5; border-color: #607d8b; color: #fff; }

/* GraphRAG: colorful */
.graphrag .box.user   { background: #bbdefb; border-color: #1e88e5; color: #0d47a1; }
.graphrag .box.router { background: #fff3e0; border-color: #fb8c00; color: #e65100; }
.graphrag .box.proc   { background: #e8f5e9; border-color: #43a047; color: #1b5e20; }
.graphrag .box.graph  { background: #f3e5f5; border-color: #8e24aa; color: #4a148c; }
.graphrag .box.store  { background: #fff8e1; border-color: #fbc02d; color: #f57f17; }
.graphrag .box.data   { background: #e1f5fe; border-color: #039be5; color: #01579b; }
.graphrag .box.hybrid { background: #c8e6c9; border-color: #2e7d32; color: #1b5e20; }
.graphrag .box.llm    { background: #90caf9; border-color: #1565c0; color: #fff; }

.dual { display: flex; gap: 10px; width: 100%; max-width: 320px; margin: 4px 0; }
.path { flex: 1; display: flex; flex-direction: column; align-items: center; }
.path-title { font-size: 11px; font-weight: bold; color: #546e7a; margin-bottom: 4px; text-transform: uppercase; }

/* Callouts */
.callout {
    display: block;
    font-weight: normal;
    font-size: 10.5px;
    margin-top: 4px;
    padding: 2px 6px;
    border-radius: 10px;
}
.callout.bad  { background: #ffebee; color: #b71c1c; border: 1px solid #ef9a9a; }
.callout.good { background: #e8f5e9; color: #1b5e20; border: 1px solid #a5d6a7; }

/* Center VS separator */
.vs { display: flex; flex-direction: column; align-items: center; height: 100%; padding-top: 40px; }
.vs-line { flex: 1; width: 0; border-left: 2px dashed #b0bec5; min-height: 30px; }
.vs-badge {
    background: #1a3a6c; color: #fff; font-weight: bold; font-size: 16px;
    width: 42px; height: 42px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 6px 0;
}

/* Comparison table */
.cmp-table {
    width: 100%;
    max-width: 760px;
    margin: 22px auto 0;
    border-collapse: collapse;
    font-size: 13px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}
.cmp-table th {
    background: #1a3a6c; color: #fff; padding: 10px; text-align: left;
}
.cmp-table th:nth-child(2) { background: #455a64; }
.cmp-table th:nth-child(3) { background: #2e7d32; }
.cmp-table td { padding: 9px 10px; border-top: 1px solid #eceff1; }
.cmp-table td:first-child { font-weight: bold; }
.cmp-table tr:nth-child(even) td { background: #fafafa; }
.cmp-table td.ok { color: #1b5e20; font-weight: bold; }
.cmp-table td.no { color: #b71c1c; }

.annotations {
    display: flex;
    justify-content: space-between;
    max-width: 760px;
    margin: 10px auto 0;
    font-size: 12.5px;
    font-style: italic;
}
.ann.left { color: #546e7a; }
.ann.right { color: #2e7d32; font-weight: bold; }