/* 配色: 生成りの紙のような背景に深緑のアクセント（記事を読むような画面） */
:root {
  --bg: #f6f3ec;
  --surface: #ffffff;
  --field: #f8f6f1;
  --text: #24282d;
  --muted: #6a6e74;
  --border: #e3ddd1;
  --accent: #0e6b5f;
  --accent-ink: #0a5a50;
  --accent-soft: #e2f1ec;
  --mark: #f3c969;
  --shadow: 0 1px 2px rgba(60, 50, 30, .06), 0 4px 16px rgba(60, 50, 30, .06);
  --ok-bg: #e7f5ea;
  --ok-text: #1f6b32;
  --warn-bg: #fff6e0;
  --warn-text: #7a5300;
  --error-bg: #fdecec;
  --error-text: #a12020;
  --conc: #e9e6df;
  --conc-line: #8a857a;
  --bar: #2b2f36;
  --hoop: #3a7d44;
  /* グラフ（長期 = 系列1, 短期 = 系列2, NG = critical） */
  --s1: #2a78d6;
  --s2: #eb6834;
  --critical: #d03b3b;
  --grid: #e8eaee;
  --axis: #9aa1ad;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151816;
    --surface: #1e2220;
    --field: #262b28;
    --text: #e8e6e1;
    --muted: #a3a29c;
    --border: #333833;
    --accent: #4cbfa9;
    --accent-ink: #7fd8c6;
    --accent-soft: #1b3330;
    --mark: #c9a246;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    --ok-bg: #173322;
    --ok-text: #8fdca4;
    --warn-bg: #3a2f14;
    --warn-text: #f2cf7a;
    --error-bg: #3d1d1d;
    --error-text: #ff9b9b;
    --conc: #3a3833;
    --conc-line: #8f8a7f;
    --bar: #f0f0f0;
    --hoop: #6cc47a;
    --s1: #3987e5;
    --s2: #d95926;
    --critical: #e66767;
    --grid: #2a2f38;
    --axis: #6b7381;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Yu Gothic UI", "Hiragino Sans", "Meiryo", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}
[hidden] { display: none !important; }
.muted { color: var(--muted); }

/* ---- 共通レイアウト: 上にサイト名とメニュー、本文は中央の1カラム ---- */
.mast-in { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.masthead { background: var(--surface); border-bottom: 1px solid var(--border); }
.masthead > .mast-in { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; padding-top: 16px; padding-bottom: 12px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 800; font-size: 18px; letter-spacing: .04em; text-decoration: none; }
/* 断面を模したロゴ（四角の中に鉄筋の点） */
.brand-mark {
  width: 22px; height: 22px; border-radius: 5px; background: var(--accent); flex-shrink: 0; align-self: center;
  background-image: radial-gradient(circle at 30% 30%, #fff 2px, transparent 2.5px), radial-gradient(circle at 70% 30%, #fff 2px, transparent 2.5px),
                    radial-gradient(circle at 30% 70%, #fff 2px, transparent 2.5px), radial-gradient(circle at 70% 70%, #fff 2px, transparent 2.5px);
}
.tagline { color: var(--muted); font-size: 12.5px; }
.topnav { border-top: 1px solid var(--border); }
.topnav .mast-in { display: flex; flex-wrap: wrap; gap: 0 4px; }
.topnav a, .topnav .soon {
  padding: 10px 14px; color: var(--muted); text-decoration: none; white-space: nowrap; font-weight: 600;
  border-bottom: 3px solid transparent;
}
.topnav a:hover { color: var(--text); }
.topnav a.active { color: var(--accent-ink); border-bottom-color: var(--accent); }
.topnav .soon { opacity: .55; font-weight: normal; }
.topnav small { font-size: 10px; margin-left: 4px; border: 1px solid currentColor; border-radius: 8px; padding: 0 5px; }
.page { max-width: 1160px; margin: 0 auto; padding: 28px 24px 64px; }
h1 { font-size: 30px; line-height: 1.3; margin: 0; letter-spacing: .02em; }
h2 { font-size: 15px; margin: 0 0 10px; }
h3 { font-size: 14px; margin: 0 0 6px; }
.lead { color: var(--muted); margin: 4px 0 20px; }
.hint { color: var(--muted); font-size: 12px; margin: 6px 0 0; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; box-shadow: var(--shadow); }

/* 記事の頭: カテゴリ・タイトル・説明・使い方 */
.post-head { margin: 4px 0 26px; }
.post-cat { display: inline-block; margin: 0 0 10px; padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font-size: 12px; font-weight: 700; letter-spacing: .05em; }
.post-head h1 { background: linear-gradient(transparent 70%, color-mix(in srgb, var(--mark) 55%, transparent) 70%); display: inline; }
.post-lead { font-size: 15.5px; line-height: 1.9; max-width: 760px; margin: 14px 0 0; }
.howto { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 10px; padding: 0; margin: 18px 0 0; }
.howto li { display: flex; align-items: center; gap: 8px; padding: 6px 14px 6px 6px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-size: 13px; font-weight: 600; }
.howto b { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 12px; }

/* 節の見出し（番号付き） */
.sec-h { display: flex; align-items: center; gap: 10px; font-size: 19px; margin: 0 0 16px; letter-spacing: .02em; }
.sec-h .no { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: var(--accent); color: #fff; font-size: 15px; flex-shrink: 0; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-top: 8px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow);
  padding: 20px; color: var(--text); text-decoration: none; font-size: 15px;
  display: flex; flex-direction: column; gap: 8px; border-top: 4px solid var(--accent);
}
.card span { color: var(--accent-ink); font-size: 13px; font-weight: 600; }
.card.disabled { border-top-color: var(--border); box-shadow: none; }
.card.disabled span { color: var(--muted); font-weight: normal; }
a.card:hover { transform: translateY(-2px); transition: transform .15s; }

/* ---- フォーム部品 ---- */
input[type="number"], input[type="text"], select {
  width: 100%; padding: 5px 7px;
  border: 1px solid var(--border); border-radius: 5px;
  background: var(--field); color: var(--text);
  font: inherit; font-size: 14px;
}
input[type="number"], input.num { text-align: right; font-variant-numeric: tabular-nums; }
input:disabled, select:disabled { opacity: .45; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
button.primary, button.secondary {
  padding: 7px 18px; border-radius: 999px; font: inherit; font-weight: 700; cursor: pointer;
}
button.primary { border: none; background: var(--accent); color: #fff; }
button.primary:hover:not(:disabled) { background: var(--accent-ink); }
button.primary.big { padding: 11px 34px; font-size: 16px; letter-spacing: .08em; box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 35%, transparent); }
button.secondary { border: 1px solid var(--border); background: var(--surface); color: var(--text); font-size: 13px; }
button.secondary:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-ink); }
button:disabled { opacity: .5; cursor: default; }

/* ---- 設計画面（RC柱・RC梁・鉄骨 共通）: 入力 → 計算 → 結果 → 途中計算 を上から順に ---- */
.design { display: grid; gap: 18px; }
.rtable.x3 td[data-r] { min-width: 64px; }

/* 計算ボタンと判定。入力欄をスクロールしている間も画面の下に残す */
.calc-bar {
  position: sticky; bottom: 14px; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 12px 20px; flex-wrap: wrap;
  padding: 12px 14px 12px 18px; border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(6px);
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.verdict { display: flex; align-items: center; gap: 12px; min-width: 0; font-size: 13.5px; }
.verdict b { flex-shrink: 0; padding: 3px 14px; border-radius: 999px; font-size: 14px; letter-spacing: .06em; background: var(--field); color: var(--muted); border: 1px solid var(--border); }
.verdict span { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.verdict:not([data-state="none"]) { cursor: pointer; }
.verdict[data-state="ok"] b { background: var(--ok-bg); color: var(--ok-text); border-color: transparent; }
.verdict[data-state="warn"] b, .verdict[data-state="stale"] b { background: var(--warn-bg); color: var(--warn-text); border-color: transparent; }
.verdict[data-state="ng"] b { background: var(--error-text); color: var(--surface); border-color: transparent; }
.verdict[data-state="ok"] span, .verdict[data-state="ng"] span { color: var(--text); font-weight: 600; }

/* ---- 計算結果: 大きな判定 → 方向・位置ごとのカード（検定比はメーター）→ 警告・注意 ---- */
.result-pane { scroll-margin-top: 16px; }
.pane-tools { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* 判定（最大検定比を大きく） */
.res-hero {
  --c: var(--muted);
  display: flex; align-items: center; gap: 20px; margin: 0 0 18px; padding: 16px 20px;
  border-radius: 14px; background: var(--field); border: 1px solid var(--border);
}
.res-hero[data-state="ok"] { --c: var(--ok-text); background: var(--ok-bg); border-color: transparent; }
.res-hero[data-state="warn"], .res-hero[data-state="stale"] { --c: var(--warn-text); background: var(--warn-bg); border-color: transparent; }
.res-hero[data-state="ng"] { --c: var(--error-text); background: var(--error-bg); border-color: transparent; }
.hero-ring {
  flex-shrink: 0; width: 92px; height: 92px; border-radius: 50%; display: grid; place-content: center; text-align: center;
  background: var(--surface); border: 3px solid var(--c);
}
.hero-ring b { font-size: 24px; line-height: 1.1; color: var(--c); font-variant-numeric: tabular-nums; }
.hero-ring small { font-size: 10px; color: var(--muted); }
.hero-state { margin: 0; font-size: 20px; font-weight: 800; color: var(--c); letter-spacing: .04em; }
.hero-sub { margin: 2px 0 0; color: var(--text); font-size: 13.5px; }

/* カード */
.rcards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.rcards.n3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.rcards.steel { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); align-items: start; }
.rcard {
  border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px 12px; background: var(--surface);
  display: flex; flex-direction: column; gap: 12px; position: relative; overflow: hidden;
}
.rcard::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--border); }
.rcard:has([data-r].ok)::before { background: var(--ok-text); }
.rcard:has([data-r].warn)::before { background: var(--warn-text); }
.rcard:has([data-r].ng)::before { background: var(--error-text); }
.rcard.plain::before { display: none; }
.result-pane:not(:has([data-r].ok, [data-r].ng)) .rcard { opacity: .55; }
.rc-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.rc-head h3 { margin: 0; font-size: 16px; }
.rc-src { font-size: 11.5px; color: var(--muted); }
.rc-badge { font-size: 12px; font-weight: 800; letter-spacing: .06em; padding: 1px 10px; border-radius: 999px; }
.rcard:has([data-r].ok) .rc-badge::after { content: "OK"; }
.rcard:has([data-r].ok) .rc-badge { background: var(--ok-bg); color: var(--ok-text); }
.rcard:has([data-r].warn) .rc-badge::after { content: "要確認"; }
.rcard:has([data-r].warn) .rc-badge { background: var(--warn-bg); color: var(--warn-text); }
.rcard:has([data-r].ng) .rc-badge::after { content: "NG"; }
.rcard:has([data-r].ng) .rc-badge { background: var(--error-text); color: var(--surface); }
.rgroup { display: grid; gap: 6px; }

/* 検定の行: 名前 | 応力 ÷ 耐力 = 検定比 */
.ck { display: grid; grid-template-columns: 50px minmax(0, 1fr) 14px minmax(0, 1fr) 14px 64px; align-items: center; gap: 0 4px; }
.rcards.steel .ck { grid-template-columns: 76px minmax(0, 1fr) 14px minmax(0, 1fr) 14px 64px; }
/* 梁は3枚並ぶので、記号を値の上に置いて幅を詰める */
.rcards.n3 .ck { grid-template-columns: 42px minmax(0, 1fr) 12px minmax(0, 1fr) 12px 60px; gap: 0 3px; }
.rcards.n3 .ck-q { grid-template-columns: 1fr; padding: 3px 7px; }
.rcards.n3 .ck-q small { grid-row: auto; padding: 0; line-height: 1.2; }
.rcards.n3 .ck-q em { grid-column: 1; }
.ck-q .pair2 > span { white-space: nowrap; }
.ck-h > div { font-size: 11px; font-weight: 700; color: var(--muted); text-align: center; letter-spacing: .08em; }
.ck-name { font-weight: 700; font-size: 13px; line-height: 1.3; }
.ck-name small { display: block; font-weight: normal; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.ck-name small [data-r] { color: var(--text); font-weight: 600; }
.ck-q {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; align-items: baseline;
  padding: 4px 8px; border-radius: 8px; background: var(--field); font-variant-numeric: tabular-nums; min-width: 0;
}
.ck-q small { grid-row: 1 / 3; align-self: center; font-size: 11.5px; color: var(--muted); padding-right: 6px; white-space: nowrap; }
.ck-q > [data-r], .ck-q .pair2 { text-align: right; font-size: 15px; font-weight: 700; }
.ck-q em { grid-column: 2; text-align: right; font-style: normal; font-size: 10.5px; color: var(--muted); line-height: 1.1; }
.ck-q .pair2 { display: grid; font-size: 13px; line-height: 1.35; }
.ck-q .pair2 > span { color: var(--muted); font-weight: normal; }
.ck-q .pair2 [data-r] { color: var(--text); font-weight: 700; }
.ck-q .pair2 .gov { outline: 1.5px solid var(--accent); outline-offset: 1px; border-radius: 3px; padding: 0 2px; }
.ck-op { text-align: center; color: var(--muted); font-weight: 700; }
.ck-combo { grid-column: 2 / 5; font-size: 12px; padding: 6px 8px; border-radius: 8px; background: var(--field); font-variant-numeric: tabular-nums; }
.ck-r { text-align: center; }
.ck-r [data-r] {
  display: inline-block; min-width: 58px; padding: 4px 6px; border-radius: 8px; font-size: 17px; font-weight: 800;
  font-variant-numeric: tabular-nums; line-height: 1.2;
}
.ck-r [data-r].ok { background: var(--ok-bg); color: var(--ok-text); }
.ck-r [data-r].ng { background: var(--error-text); color: var(--surface); }
.ck-r [data-r]:is(.ok, .ng)::after { display: block; font-size: 10px; font-weight: 700; letter-spacing: .1em; }
.ck-r [data-r].ok::after { content: "OK"; }
.ck-r [data-r].ng::after { content: "NG"; }
.ck-note { margin: 0 0 2px; font-size: 12.5px; color: var(--muted); }
.ck-note [data-r] { color: var(--text); font-weight: 700; font-variant-numeric: tabular-nums; }

/* プロパティ（ラベル・値・単位を2列で） */
.props-h { font-size: 11px; font-weight: 700; color: var(--muted); letter-spacing: .08em; padding-top: 10px; border-top: 1px dashed var(--border); margin-bottom: -6px; }
.props-h .rc-src { font-weight: normal; letter-spacing: 0; margin-left: 6px; }
.rcard.plain .props-h { border-top: none; padding-top: 0; }
.props { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px; margin: 0; }
.props > div { display: flex; align-items: baseline; justify-content: space-between; gap: 6px; padding: 3px 8px; border-bottom: 1px solid var(--border); font-size: 12.5px; }
.props > div.wide { grid-column: 1 / -1; }
.props dt { color: var(--muted); }
.props dd { margin: 0; font-weight: 700; font-variant-numeric: tabular-nums; }
.props dd small { font-weight: normal; color: var(--muted); margin-left: 3px; font-size: 11px; }
.props > div:has(.warn) { background: var(--warn-bg); color: var(--warn-text); border-radius: 6px; }

.res-notes { margin-top: 18px; }
.res-notes h3 { font-size: 13px; color: var(--muted); margin: 0 0 6px; }

.rtable { width: 100%; border-collapse: collapse; font-size: 13px; }
.rtable thead th { color: var(--muted); font-weight: 600; text-align: right; padding: 0 6px 4px; }
.rtable tbody { border-top: 1px solid var(--border); }
.rtable th.grp { text-align: left; vertical-align: top; padding: 6px 6px 0 0; white-space: nowrap; font-size: 13px; }
.rtable td { padding: 3px 6px; white-space: nowrap; }
.rtable td.u { color: var(--muted); font-size: 11px; }
.rtable td[data-r] { text-align: right; font-variant-numeric: tabular-nums; background: var(--field); border: 2px solid var(--surface); min-width: 72px; }
.rtable td.ok { color: var(--ok-text); font-weight: 600; }
.rtable td.ng { color: var(--error-text); background: var(--error-bg); font-weight: 700; }
.rtable td.warn { color: var(--warn-text); background: var(--warn-bg); font-weight: 700; }
.result-pane.stale .rtable td[data-r] { opacity: .45; }
.info-h { margin-top: 16px; }
.messages { list-style: none; padding: 0; margin: 0; display: grid; gap: 5px; }
.messages li { padding: 6px 10px; border-radius: 6px; font-size: 13px; }
.messages .ok { background: var(--ok-bg); color: var(--ok-text); }
.messages .warn { background: var(--warn-bg); color: var(--warn-text); }
.messages .error { background: var(--error-bg); color: var(--error-text); }
.messages .muted { padding: 0; }
.messages .note { background: var(--field); color: var(--muted); border-left: 3px solid var(--border); }  /* 備考（判定に関係しない） */

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin: -4px 0 14px; }
.tabs button {
  border: none; background: none; color: var(--muted); font: inherit;
  padding: 6px 14px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button[aria-selected="true"] { color: var(--accent); border-bottom-color: var(--accent); font-weight: 700; }
/* 入力: 左に項目を縦に並べ、右に断面図 */
.in-grid { display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: 20px; align-items: start; }
.in-list { display: grid; }
.fs { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 0 12px; align-items: start; padding: 10px 0; border-bottom: 1px solid var(--border); }
.fs:first-child { padding-top: 0; }
.fs:last-child { border-bottom: none; padding-bottom: 0; }
.fs-lbl { font-weight: 700; padding-top: 5px; }
.in-fig { position: sticky; top: 12px; }
.itable.xy { max-width: 340px; }
.itable.xy.x3 { max-width: 460px; }
.qs-setting { margin-top: 10px; display: grid; gap: 5px; }
.qs-setting .sub { margin: 0; font-weight: 600; }
.qs-setting label.inline select { width: 120px; }
.itable { border-collapse: collapse; width: 100%; }
.itable thead th { color: var(--muted); font-weight: 600; font-size: 13px; padding-bottom: 4px; }
.itable th { text-align: right; font-weight: 600; padding: 2px 6px 2px 0; white-space: nowrap; }
.itable td { padding: 2px 3px; }
.itable td.u { color: var(--muted); font-size: 11px; width: 34px; }
.itable tr.sec-row + tr:not(.sec-row) td, .itable tr.sec-row + tr:not(.sec-row) th { padding-top: 10px; }
.itable.other { max-width: 560px; }
.itable.other th { text-align: left; }
.itable.other td { width: 170px; }

.radios { display: flex; gap: 16px; padding-top: 4px; }
.radios label { display: flex; align-items: center; gap: 4px; cursor: pointer; }
label.inline { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
#section { width: 100%; max-width: 220px; display: block; }
#section .conc { fill: var(--conc); stroke: var(--conc-line); stroke-width: 1.5; }
#section .hoop { fill: none; stroke: var(--hoop); }
#section .bar { fill: var(--bar); }
#section .dim { fill: var(--muted); font-size: 11px; text-anchor: middle; }

.bar-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 16px; }
.bar-row > select { width: 80px; }
.bar-row label.inline select { width: 100px; }
.w-s { width: 56px !important; }
.at { color: var(--muted); font-weight: 700; }  /* 帯筋の 本数@間隔 */
.w-m { width: 76px !important; }
.notes { padding-left: 18px; margin-top: 14px; }
.notes li { margin-bottom: 4px; }

/* 公開版: ツールについての注記 */
.about { margin-top: 36px; font-size: 13px; color: var(--muted); background: transparent; box-shadow: none; border-style: dashed; }
.about ul { margin: 0; padding-left: 18px; display: grid; gap: 4px; }
.about a { color: var(--accent-ink); }

/* 長期・短期の切替 */
.pane-head, .lower-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px 12px; margin-bottom: 14px; }
.pane-head h2, .lower-head h2 { margin: 0; }
.seg.small { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.seg.small button {
  border: none; background: var(--surface); color: var(--text); font: inherit; font-size: 13px;
  padding: 4px 14px; cursor: pointer; position: relative;
}
.seg.small button + button { border-left: 1px solid var(--border); }
.seg.small button[aria-selected="true"] { background: var(--accent); color: #fff; font-weight: 700; }
.seg.small button:disabled { opacity: .4; cursor: default; }
/* 計算結果の長期・短期（表示専用） */
.seg.indicator span { padding: 4px 14px; font-size: 13px; color: var(--muted); background: var(--surface); cursor: default; user-select: none; }
.seg.indicator span + span { border-left: 1px solid var(--border); }
.seg.indicator span.on { background: var(--accent); color: #fff; font-weight: 700; }

/* 検討する荷重 */
.load-toggles { padding: 0 0 8px; display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px 2px 6px; border-radius: 14px; border: 1px solid var(--border); color: var(--text); cursor: pointer; }
.chip.long:has(input:checked) { border-color: var(--s1); background: color-mix(in srgb, var(--s1) 12%, transparent); }
.chip.short:has(input:checked) { border-color: var(--s2); background: color-mix(in srgb, var(--s2) 12%, transparent); }
.tag { font-style: normal; font-size: 10px; font-weight: 700; border-radius: 3px; padding: 0 3px; margin-right: 5px; vertical-align: 1px; color: #fff; }
.tag.long { background: var(--s1); }
.tag.short { background: var(--s2); }
.reserved { visibility: hidden; }
input.auto { background: transparent; border-style: dashed; color: var(--muted); cursor: default; }
input.auto:focus { outline: none; }

/* 下段 */
.lower { margin-top: 40px; }
.lower.stale .lower-grid { opacity: .5; }
.lower-grid { display: grid; grid-template-columns: minmax(340px, 500px) minmax(0, 1fr); gap: 16px; align-items: start; }
.mn-panel h3 { margin-bottom: 4px; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.sw { display: inline-block; width: 16px; height: 2px; vertical-align: middle; margin-right: 4px; }
.sw.s1 { background: var(--s1); }
.sw.s2 { background: var(--s2); }
.mk { display: inline-block; width: 9px; height: 9px; background: var(--muted); }
.mk.circle { border-radius: 50%; background: var(--s1); }
.mk.up { clip-path: polygon(50% 0, 100% 100%, 0 100%); background: var(--s2); }
.mk.down { clip-path: polygon(0 0, 100% 0, 50% 100%); background: var(--s2); }
.chart-wrap { position: relative; }
.mn-chart { width: 100%; display: block; }
.mn-chart .grid line { stroke: var(--grid); stroke-width: 1; }
.mn-chart .axis { stroke: var(--axis); stroke-width: 1; }
.mn-chart .tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.mn-chart .axis-label { fill: var(--muted); font-size: 12px; }
.mn-chart .curve { fill: none; stroke-width: 2; stroke-linejoin: round; }
.mn-chart .curve.s1 { stroke: var(--s1); }
.mn-chart .curve.s2 { stroke: var(--s2); }
.mn-chart .crosshair { stroke: var(--axis); stroke-dasharray: 3 3; }
.mn-chart .cdot { stroke: var(--surface); stroke-width: 2; }
.mn-chart .cdot.s1, .mn-chart .pt.s1 .mark { fill: var(--s1); }
.mn-chart .cdot.s2, .mn-chart .pt.s2 .mark { fill: var(--s2); }
.mn-chart .pt .mark { stroke: var(--surface); stroke-width: 2; }
.mn-chart .pt .ng-ring { fill: none; stroke: var(--critical); stroke-width: 2; }
.mn-chart .pt-label { fill: var(--text); font-size: 11px; }
.mn-chart .pt.ng .pt-label { fill: var(--critical); font-weight: 700; }
.mn-chart .hit { fill: transparent; cursor: default; }
.mn-chart .overlay { fill: transparent; }
.tooltip {
  position: absolute; pointer-events: none; background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 6px 9px; font-size: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .15); white-space: nowrap; font-variant-numeric: tabular-nums;
}

.steps-panel h3 { margin: 14px 0 6px; }
.steps-panel h3:first-child { margin-top: 0; }
.steps-panel details { border: 1px solid var(--border); border-radius: 6px; margin-bottom: 6px; }
.steps-panel summary { cursor: pointer; padding: 6px 10px; font-size: 13px; font-variant-numeric: tabular-nums; }
.steps-panel summary .case-name { display: inline-block; min-width: 56px; font-weight: 700; }
.steps-panel details .steps { margin: 0 10px 8px; width: calc(100% - 20px); }
b.ng { color: var(--critical); }
table.steps { border-collapse: collapse; width: 100%; font-size: 13px; }
.steps td { padding: 4px 6px; border-bottom: 1px solid var(--border); vertical-align: top; }
.steps td.sym { font-weight: 700; white-space: nowrap; width: 52px; }
.steps td.expr { font-family: "Cambria Math", "Times New Roman", serif; font-size: 13.5px; }
.steps .subst { color: var(--muted); font-family: inherit; font-size: 12px; font-variant-numeric: tabular-nums; }
.steps td.val { white-space: nowrap; text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.steps td.val .unit { color: var(--muted); font-weight: normal; font-size: 11px; }
.steps td.note { color: var(--muted); font-size: 12px; }
.steps tr.st-case td { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.steps tr.st-ng td { background: var(--error-bg); color: var(--error-text); font-weight: 600; }
.steps tr.st-note td { color: var(--muted); }

/* ---- 梁・鉄骨の画面 ---- */
.w-l { width: auto !important; min-width: 120px; }
.pair { display: inline-flex; align-items: center; gap: 3px; white-space: nowrap; }
.section-fig, .steel-fig { width: 100%; max-width: 220px; display: block; }
.section-fig .conc { fill: var(--conc); stroke: var(--conc-line); stroke-width: 1.5; }
.section-fig .hoop { fill: none; stroke: var(--hoop); }
.section-fig .bar { fill: var(--bar); }
.section-fig .dim, .steel-fig .dim { fill: var(--muted); font-size: 11px; text-anchor: middle; }
.steel-fig .steel { fill: color-mix(in srgb, var(--accent) 35%, var(--surface)); stroke: var(--accent); stroke-width: 1.2; }
.steel-fig .axis-x { stroke: var(--axis); stroke-dasharray: 4 3; }
.beam-figs { display: grid; gap: 6px; }
.beam-figs figure { margin: 0; }
.beam-figs figcaption { font-size: 12px; font-weight: 700; color: var(--muted); }
.beam-figs figure.off { opacity: .35; }
.rtable td.gov { outline: 2px solid var(--accent); outline-offset: -2px; }
.rtable.compact td[data-r] { min-width: 52px; }
.rtable.compact td.combo { font-size: 12px; text-align: left; white-space: normal; }
.rtable th.grp small { display: block; font-weight: normal; color: var(--muted); font-size: 11px; }
.dims label.inline span { min-width: 14px; }


@media (max-width: 1100px) {
  .lower-grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .mast-in { padding: 0 16px; }
  .tagline, .topnav .soon { display: none; }
  .page { padding: 20px 16px 48px; }
  h1 { font-size: 24px; }
  .panel { padding: 16px; }
  .rcards, .rcards.n3, .rcards.steel { grid-template-columns: 1fr; }
  .ck { grid-template-columns: 42px minmax(0, 1fr) 10px minmax(0, 1fr) 10px 58px; gap: 0 3px; }
  .rcard { padding: 12px; }
  .res-hero { gap: 14px; padding: 12px 14px; }
  .hero-ring { width: 76px; height: 76px; }
  .calc-bar { border-radius: 16px; bottom: 8px; }
  .calc-bar .primary.big { flex: 1; }
  .in-grid { grid-template-columns: 1fr; }
  .in-fig { position: static; order: -1; }
  .fs { grid-template-columns: 1fr; gap: 4px; }
  .fs-lbl { padding-top: 0; }
  /* スマホ幅: 表の最小幅をなくして横にはみ出さないようにする */
  .rtable td[data-r] { min-width: 0; }
  .rtable td, .rtable th.grp { white-space: normal; }
  .design, .lower-grid { min-width: 0; }
  .panel { min-width: 0; overflow-x: auto; }
}

/* ---- 印刷（A4縦）簡易: 1断面1カード / 詳細: 1断面1ページ ---- */
@page { size: A4 portrait; margin: 10mm 11mm; }
@media print {
  body { background: #fff; color: #111; }
  .masthead, .screen { display: none !important; }
  main.page { padding: 0; max-width: none; }
  .print-sheet { position: static !important; width: auto !important; }
  .pd { break-after: page; page-break-after: always; }
  .pd:last-child { break-after: auto; page-break-after: auto; }
}
/* 印刷用シートは画面外に置いてレイアウトだけさせる（詳細印刷で1ページに収まるかを測るため） */
.print-sheet {
    position: absolute; left: -10000px; top: 0; width: 188mm; background: #fff;
    display: block; color: #111; font-size: 7.6pt; line-height: 1.22;
    font-family: "Yu Gothic", "YuGothic", "Meiryo", sans-serif; font-variant-numeric: tabular-nums;
    -webkit-print-color-adjust: exact; print-color-adjust: exact;
    --ink: #111; --ink2: #555; --rule: #bbb; --rule2: #e2e2e2; --head: #1f3a5f;
    --ok: #1f6b32; --warn: #a06a00; --ng: #b3261e; --bar: #d4dbe6;
    /* グラフは常にライト配色で印刷する */
    --s1: #2a78d6; --s2: #eb6834; --critical: #d03b3b; --grid: #e4e6ea; --axis: #8a909b;
    --muted: #555; --text: #111; --surface: #fff;
}
  .print-sheet table { border-collapse: collapse; }
  .ps-page { width: 100%; }
  .ps-page > thead td, .ps-page > tfoot td, .ps-page > tbody > tr > td { padding: 0; }

  /* ページの頭と足（各ページに繰り返す） */
  .ps-header { display: flex; justify-content: space-between; align-items: flex-end; border-bottom: 1.6pt solid var(--head); padding-bottom: 2pt; margin-bottom: 4mm; }
  .ps-doc { font-size: 12pt; font-weight: 700; color: var(--head); letter-spacing: .08em; margin-right: 10pt; }
  .ps-sub, .ps-date { color: var(--ink2); }
  .ps-footer { display: flex; flex-wrap: wrap; gap: 0 12pt; border-top: .6pt solid var(--rule); padding-top: 2pt; margin-top: 3mm; color: var(--ink2); font-size: 6.6pt; }

  /* 一覧（2断面以上） */
  .ps-summary { width: 100%; margin-bottom: 4mm; }
  .ps-summary th { background: var(--head); color: #fff; font-weight: 600; padding: 1.5pt 4pt; text-align: left; }
  .ps-summary td { border-bottom: .5pt solid var(--rule2); padding: 1.5pt 4pt; }
  .ps-summary td.num { text-align: right; }

  /* 断面カード */
  .pc { border: .7pt solid var(--rule); border-left: 2.4pt solid var(--head); margin-bottom: 3mm; break-inside: avoid; page-break-inside: avoid; }
  .pc.is-ng { border-left-color: var(--ng); }
  .pc-head { display: flex; align-items: center; gap: 8pt; padding: 1.2pt 6pt; background: #f1f4f8; border-bottom: .5pt solid var(--rule); }
  .pc-no { font-weight: 700; color: var(--head); }
  .pc-title { font-weight: 700; font-size: 9pt; }
  .pc-meta { color: var(--ink2); }
  .pc-case { margin-left: auto; border: .6pt solid currentColor; border-radius: 2pt; padding: 0 4pt; font-weight: 700; }
  .pc-case.long { color: #2a5ea8; }
  .pc-case.short { color: #b4501f; }
  .stamp { display: inline-flex; align-items: baseline; gap: 4pt; border: 1pt solid currentColor; border-radius: 2pt; padding: 0 5pt; }
  .stamp b { font-size: 9pt; letter-spacing: .1em; }
  .stamp small { font-size: 6.6pt; }
  .stamp.ok { color: var(--ok); }
  .stamp.warn { color: var(--warn); }
  .stamp.ng { color: #fff; background: var(--ng); border-color: var(--ng); }

  .pc-body { display: grid; grid-template-columns: 25mm 52mm 1fr; gap: 0 4mm; padding: 1.5pt 6pt 2pt; align-items: start; }
  .pc-fig { width: 25mm; height: 25mm; }
  .pc-fig .conc { fill: #eceae4; stroke: #666; stroke-width: 1.2; }
  .pc-fig .hoop { fill: none; stroke: #555; }
  .pc-fig .bar { fill: #111; }
  .pc-fig .dim { fill: #444; font-size: 14px; text-anchor: middle; }
  .pc-fig .steel { fill: #c9d3e2; stroke: #333; stroke-width: 1.2; }
  .pc-fig .axis-x { stroke: #888; stroke-dasharray: 4 3; }
  /* 梁: 左に断面図（1〜3つ）、右に配筋表と検定表を上下に並べる（左端・中央・右端の3列） */
  .pc-body.beam { grid-template-columns: 21mm 1fr; row-gap: 1.5mm; }
  .pc-body.beam .pc-figs { grid-row: span 2; align-content: start; }
  .pc-body.beam .pc-check td:nth-child(8), .pc-body.beam .pc-check thead th[colspan] + th[colspan] + th[colspan] { border-left: .6pt solid var(--rule); }
  .pd-charts.n3, .pd-steps.n3 { grid-template-columns: 1fr 1fr 1fr; }
  .pc-figs { display: grid; gap: 1mm; }
  .pc-figs figure { margin: 0; text-align: center; }
  .pc-figs .pc-fig { width: 21mm; height: 21mm; }
  .pc-figs figcaption { font-size: 6.4pt; color: var(--ink2); }

  .pc-spec, .pc-check { width: 100%; }
  .pc-spec th, .pc-spec td, .pc-check th, .pc-check td { padding: .3pt 3pt; border-bottom: .4pt solid var(--rule2); white-space: nowrap; }
  /* 外枠（.ps-page）の tbody 内に入れ子になるので、子孫ではなく子セレクタで指定する */
  .pc-spec > thead th, .pc-check > thead th { color: var(--ink2); font-weight: 600; border-bottom: .7pt solid var(--rule); text-align: right; }
  .pc-spec > tbody > tr > th, .pc-check > tbody > tr > th { text-align: left; font-weight: 600; }
  .print-sheet th small { color: var(--ink2); font-weight: normal; margin-left: 2pt; font-size: 6.4pt; }
  .pc-spec td { text-align: right; }
  .pc-check col.c-lb { width: 11mm; }
  .pc-check thead tr:first-child th { text-align: center; }
  .pc-check thead tr.sub th { font-size: 6.6pt; font-weight: normal; }
  .pc-check thead th[colspan] + th[colspan], .pc-check td:nth-child(5) { border-left: .6pt solid var(--rule); }
  .pc-check td.num { text-align: right; }
  .print-sheet tr.sep th, .print-sheet tr.sep td { border-top: .7pt solid var(--rule); }

  /* 検定比：数値＋1.00を満幅とするバー */
  .pc-check td.rt { position: relative; text-align: right; width: 15mm; }
  .pc-check td.rt i { position: absolute; left: 3pt; top: 1.4pt; bottom: 1.4pt; background: var(--bar); border-radius: 1pt; max-width: calc(100% - 6pt); }
  .pc-check td.rt b { position: relative; font-weight: 700; }
  .pc-check td.rt.ng i { background: #f3c9c5; }
  .pc-check td.rt.ng b { color: var(--ng); }

  .pc-notes { list-style: none; margin: 0; padding: 1pt 6pt 1.5pt; border-top: .4pt dashed var(--rule); display: flex; flex-wrap: wrap; gap: 0 12pt; }
  .pc-notes em { font-style: normal; font-weight: 700; margin-right: 3pt; color: var(--head); }
  .pc-notes li.warn { color: var(--warn); }

  /* 詳細印刷（1断面1ページ） */
  .pd { width: 188mm; min-height: 275mm; display: flex; flex-direction: column; }
  .pd .pc { margin-bottom: 2.5mm; }
  .pd-charts { display: grid; gap: 4mm; margin-bottom: 2mm; }
  .pd-charts.n2, .pd-steps.n2 { grid-template-columns: 1fr 1fr; }
  .pd-charts.n1 { grid-template-columns: 1fr 1fr; }
  .pd-chart { margin: 0; border: .6pt solid var(--rule); padding: 1.5pt 4pt 2pt; }
  .pd-chart figcaption { font-size: 7pt; color: var(--ink2); }
  .pd-chart figcaption b { color: var(--head); margin-right: 3pt; }
  .pd-chart .mn-chart { width: 100%; display: block; }
  .pd-chart .legend { font-size: 6.4pt; gap: 0 8pt; margin: 0; color: var(--ink2); }
  .pd-chart .mn-chart .tick { font-size: 13px; }
  .pd-chart .mn-chart .axis-label, .pd-chart .mn-chart .pt-label { font-size: 14px; }
  .pd-steps { display: grid; gap: 4mm; font-size: 6.6pt; line-height: 1.2; }
  .pd-col h4 { margin: 0; padding: 1pt 4pt; background: var(--head); color: #fff; font-size: 7.4pt; }
  .pd-col h5 { margin: 3pt 0 1pt; font-size: 7pt; color: var(--head); border-bottom: .6pt solid var(--head); }
  .pd-case { display: flex; gap: 6pt; align-items: baseline; margin-top: 2pt; padding: .5pt 3pt; background: #f1f4f8; font-variant-numeric: tabular-nums; }
  .pd-case span { font-weight: 700; color: var(--head); min-width: 30pt; }
  .pd-case b.ng, .pd-tbl b.ng { color: var(--ng); }
  .pd-same { margin: 0; padding: 0 3pt; color: var(--ink2); font-size: 6.2pt; }
  .pd-tbl { width: 100%; }
  .pd-tbl th, .pd-tbl td { padding: .2pt 2pt; border-bottom: .3pt solid var(--rule2); vertical-align: top; }
  .pd-tbl th { text-align: left; white-space: nowrap; width: 9mm; font-weight: 700; }
  .pd-tbl td { font-family: "Cambria Math", "Yu Gothic", serif; }
  .pd-tbl .sb { color: var(--ink2); font-family: "Yu Gothic", sans-serif; }
  .pd-tbl small { color: var(--ink2); margin-left: 4pt; font-family: "Yu Gothic", sans-serif; font-size: 5.8pt; }
  .pd-tbl td.v { text-align: right; white-space: nowrap; font-family: "Yu Gothic", sans-serif; font-weight: 700; width: 16mm; }
  .pd-tbl td.v small { font-weight: normal; margin-left: 2pt; }
  .pd-tbl tr.k-case td { color: var(--head); font-weight: 700; font-family: "Yu Gothic", sans-serif; background: #f6f8fb; }
  .pd-tbl tr.k-ng td { color: var(--ng); font-weight: 700; font-family: "Yu Gothic", sans-serif; }
  .pd-tbl tr.k-note td { color: var(--ink2); font-family: "Yu Gothic", sans-serif; }
  .pd .ps-footer { margin-top: auto; padding-top: 2pt; }