/* =========================================================
   資料ページ（先方説明用）
   ========================================================= */
.doc { max-width: 1080px; }
.doc h2.d-title { font-size: 20px; margin: 0 0 4px; }
.doc .d-lead { color: var(--ink-sub); font-size: 12.5px; margin: 0 0 18px; }

.doc section { margin-bottom: 28px; }
.doc h3 {
    font-size: 15px; margin: 0 0 10px; padding-left: 9px;
    border-left: 4px solid var(--blue);
}
.doc h3 span { font-weight: 400; font-size: 11.5px; color: var(--ink-sub); margin-left: 8px; }
.doc h4 { font-size: 13px; margin: 16px 0 7px; }
.doc p { margin: 0 0 9px; font-size: 13px; }
.doc ul { margin: 0 0 9px; padding-left: 20px; font-size: 13px; }
.doc li { margin-bottom: 3px; }

/* 3つの要点カード */
.d-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.d-card {
    background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 12px 13px;
    border-top: 3px solid var(--blue);
}
.d-card b { display: block; font-size: 13.5px; margin-bottom: 4px; }
.d-card span { font-size: 12px; color: var(--ink-sub); line-height: 1.7; }
.d-card.c-mat { border-top-color: #b35900; }
.d-card.c-prod { border-top-color: #8b2c3b; }
.d-card.c-sys { border-top-color: var(--green); }

/* 流れ（ステップ） */
.d-flow { display: flex; gap: 0; flex-wrap: wrap; align-items: stretch; }
.d-step {
    flex: 1 1 178px; background: #fff; border: 1px solid var(--line-dark); border-radius: 8px;
    padding: 10px 12px; position: relative; margin: 0 14px 12px 0;
}
.d-step:not(:last-child)::after {
    content: '▶'; position: absolute; right: -15px; top: 50%; transform: translateY(-50%);
    color: var(--line-dark); font-size: 12px;
}
.d-step .s-no {
    display: inline-block; width: 18px; height: 18px; line-height: 18px; text-align: center;
    background: var(--ink); color: #fff; border-radius: 50%; font-size: 10.5px; margin-bottom: 5px;
}
.d-step .s-ttl { font-weight: 700; font-size: 13px; display: block; margin-bottom: 3px; }
.d-step .s-txt { font-size: 11.5px; color: var(--ink-sub); line-height: 1.65; display: block; }
.d-step .s-where {
    display: inline-block; margin-top: 6px; font-size: 10.5px;
    background: var(--tint-blue); border: 1px solid #cfe0f5; border-radius: 3px; padding: 0 5px; color: var(--blue);
}
.d-flow.f-mat .d-step { border-left: 3px solid #b35900; }
.d-flow.f-prod .d-step { border-left: 3px solid #8b2c3b; }

/* 構造図 */
.d-arch { display: flex; gap: 12px; flex-wrap: wrap; }
.d-site { flex: 1 1 300px; background: #fff; border: 1px solid var(--line-dark); border-radius: 8px; padding: 12px; }
.d-site > b { font-size: 13.5px; }
.d-site .d-note { font-size: 11px; color: var(--ink-sub); }
.d-ledger {
    background: #fafaf7; border: 1px solid var(--line); border-radius: 6px;
    padding: 7px 9px; margin-top: 8px; font-size: 12px;
}
.d-ledger code { font-size: 11px; background: #ececeb; border-radius: 3px; padding: 0 4px; }
.d-ledger .d-cols { font-size: 11px; color: var(--ink-sub); }
.d-link { display: flex; align-items: center; justify-content: center; flex: 0 0 74px; }
.d-link span { font-size: 11.5px; color: var(--blue); text-align: center; line-height: 1.6; }

/* 表 */
.doc .tbl td, .doc .tbl th { font-size: 12px; }
.doc .tbl td.k { white-space: nowrap; font-family: monospace; font-size: 11px; }

/* 注記 */
.d-warn {
    background: var(--tint-warm); border: 1px solid #f0d9a8; border-radius: 6px;
    padding: 10px 12px; font-size: 12.5px; color: #7a5a10;
}
.d-num { font-variant-numeric: tabular-nums; }

@media print {
    .hdr, .d-noprint { display: none !important; }
    .page { padding: 0; }
    .d-step:not(:last-child)::after { content: ''; }
}