/* =========================================================
   ブログ記事ページ「濃紺ヘッダー＋ガイド型」（案Cベースの完成版）
   ・濃紺の記事ヘッダー＋白い本文。本文の横に進捗つき目次、各 h2 に章番号（CSSカウンター）
   ・ヘッダー／フッターは共通部品（プレースホルダ）。site.css は読まない
   ・この案のスタイルは .art-c の内側だけ（skip link の .ac-skip のみ例外）
   ・CSSで初期非表示にする演出は置かない（目次は JS で生成するため、生成までは hidden）
   ・本文（sample-post.json の content_html）は改変せず、インライン style は !important で上書き
   ========================================================= */
html,body{margin:0}
.ac-skip{position:fixed;left:12px;top:-64px;z-index:200;padding:10px 16px;border-radius:6px;background:#10161b;color:#fff;font:700 14px/1.4 'Noto Sans JP',sans-serif;text-decoration:none}
.ac-skip:focus{top:12px}

.art-c{
  --blue:#479CD9;--deep:#1E5F8C;--ink:#10161b;--text:#1d2830;--muted:#4b5a63;--line:#cddce8;--paper:#f8fbfd;--sky:#a9d6f5;--tint:#eef6fc;
  --navy:#13324c;--navy2:#0f2436;
  --en:'Barlow Condensed','Noto Sans JP',sans-serif;
  --ja:'Noto Sans JP',sans-serif;
  --hh:84px;--stick:88px;
  display:block;font-family:var(--ja);font-size:16px;font-weight:400;line-height:1.8;color:var(--ink);background:#fff;
  overflow-x:clip;-webkit-font-smoothing:antialiased;
}
.art-c,.art-c *,.art-c *::before,.art-c *::after{box-sizing:border-box}
:where(.art-c) :is(h1,h2,h3,h4,p,ul,ol,figure,dl,dd,blockquote){margin:0}
:where(.art-c) :is(h1,h2,h3,h4){font-weight:900;letter-spacing:.01em}
:where(.art-c) :is(ul,ol){padding:0;list-style:none}
:where(.art-c) a{color:inherit}
:where(.art-c) img{display:block;max-width:100%;height:auto}
:where(.art-c) button{appearance:none;-webkit-appearance:none;background:none;border:0;border-radius:0;padding:0;margin:0;color:inherit;font:inherit;cursor:pointer}
.art-c [hidden]{display:none !important}
.art-c img.is-missing{visibility:hidden}
.art-c :focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.art-c .kp{word-break:keep-all;overflow-wrap:anywhere}
@supports (word-break:auto-phrase){.art-c .ap{word-break:auto-phrase}}
.art-c .ac-wrap{width:min(1200px, 100% - 48px);margin-inline:auto}
.art-c .arr{display:inline-block;font-family:var(--en);font-weight:800;line-height:1;transition:transform .2s}

/* ---------- 読了プログレスバー ---------- */
.art-c .ac-progress{position:fixed;left:0;right:0;top:0;z-index:60;height:4px;pointer-events:none}
.art-c .ac-progress i{display:block;height:100%;background:linear-gradient(90deg, var(--blue), var(--sky));transform:scaleX(0);transform-origin:0 50%}

.art-c .ac-main{padding-top:var(--hh)}
.art-c .ac-main:focus{outline:none}

/* =========================================================
   濃紺の記事ヘッダー
   ========================================================= */
.art-c .ac-hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(160deg, var(--navy2) 0%, var(--navy) 55%, #1a4a70 100%);padding:clamp(22px, 3vw, 32px) 0 clamp(44px, 5vw, 72px)}
.art-c .ac-lines{position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(to right, rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,.045) 1px, transparent 1px);background-size:64px 64px;-webkit-mask-image:linear-gradient(90deg, transparent 0%, #000 40%, #000 100%);mask-image:linear-gradient(90deg, transparent 0%, #000 40%, #000 100%)}
.art-c .ac-hero-in{position:relative;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:40px clamp(32px, 4vw, 64px);align-items:center;margin-top:clamp(24px, 3vw, 36px)}

.art-c .ac-crumb{position:relative}
.art-c .ac-crumb ol{display:flex;flex-wrap:wrap;align-items:center;row-gap:2px;font-size:12.5px;line-height:1.6;color:rgba(255,255,255,.78)}
.art-c .ac-crumb li{display:flex;align-items:center;min-width:0;max-width:100%}
.art-c .ac-crumb li + li::before{content:"›";flex:none;margin:0 10px;color:rgba(255,255,255,.5)}
.art-c .ac-crumb a{text-decoration:none}
.art-c .ac-crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.art-c .ac-crumb [aria-current]{display:block;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#fff}

.art-c .ac-tag{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.art-c .ac-tag-en{display:inline-flex;align-items:center;gap:8px;padding:3px 12px;border-radius:4px;background:var(--blue);font-family:var(--en);font-size:14px;font-weight:800;letter-spacing:.22em;line-height:1.4}
.art-c .ac-cat{display:inline-flex;align-items:center;min-height:30px;padding:2px 14px;border:1px solid rgba(255,255,255,.5);border-radius:4px;font-size:13px;font-weight:700;line-height:1.4;text-decoration:none;transition:background-color .2s}
.art-c .ac-cat:hover{background:rgba(255,255,255,.12)}
.art-c .ac-series{font-size:12.5px;font-weight:700;color:rgba(255,255,255,.75)}
.art-c .ac-hero h1{margin-top:18px;font-size:clamp(26px, 1.5vw + 17px, 42px);line-height:1.5;letter-spacing:.01em}
.art-c .ac-lead{margin-top:16px;max-width:40em;font-size:15px;line-height:1.95;color:rgba(255,255,255,.86)}
.art-c .ac-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;margin-top:24px}
.art-c .ac-by{display:flex;align-items:center;gap:12px}
.art-c .ac-av{flex:none;width:44px;height:44px;border-radius:50%;overflow:hidden;background:#244b6b;box-shadow:0 0 0 2px var(--sky)}
.art-c .ac-av img{width:100%;height:100%;object-fit:cover;object-position:50% 18%}
.art-c .ac-by-t{display:flex;flex-direction:column;line-height:1.35}
.art-c .ac-by-t a{font-size:15px;font-weight:700;text-decoration:none}
.art-c .ac-by-t a:hover{text-decoration:underline;text-underline-offset:3px}
.art-c .ac-by-t span{font-size:12px;color:rgba(255,255,255,.75)}
.art-c .ac-dates{display:flex;flex-wrap:wrap;gap:4px 20px;font-size:12px;font-weight:700;color:rgba(255,255,255,.75)}
.art-c .ac-dates time{margin-left:6px;font-family:var(--en);font-size:17px;font-weight:800;letter-spacing:.03em;color:#fff}

/* 数字のストリップ */
.art-c .ac-stats{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));margin-top:28px;border-top:1px solid rgba(255,255,255,.24);border-bottom:1px solid rgba(255,255,255,.24)}
.art-c .ac-stats > div{padding:14px 16px 12px}
.art-c .ac-stats > div + div{border-left:1px solid rgba(255,255,255,.18)}
.art-c .ac-stats dt{font-family:var(--en);font-size:12px;font-weight:700;letter-spacing:.22em;color:var(--sky)}
.art-c .ac-stats dd{display:flex;align-items:baseline;gap:4px;margin:4px 0 0;font-size:13px;font-weight:700;line-height:1.2}
.art-c .ac-stats dd b{font-family:var(--en);font-size:34px;font-weight:900;letter-spacing:.01em;line-height:1}
.art-c .ac-stats dd b.sm{font-size:24px}

.art-c .ac-eye{position:relative}
.art-c .ac-eye-ph{position:relative;aspect-ratio:16 / 9;overflow:hidden;border-radius:10px;background:linear-gradient(135deg, #1f4c71 0%, #2b6390 100%);box-shadow:0 40px 70px -40px rgba(0,0,0,.7)}
.art-c .ac-eye-ph img{width:100%;height:100%;object-fit:cover}
.art-c .ac-eye::before{content:"";position:absolute;right:-14px;bottom:-14px;width:46%;height:56%;border-right:3px solid var(--blue);border-bottom:3px solid var(--blue);border-radius:0 0 14px 0;pointer-events:none}

/* =========================================================
   本文＋進捗つき目次
   ========================================================= */
.art-c .ac-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px clamp(40px, 5vw, 72px);padding-top:clamp(48px, 6vw, 72px);padding-bottom:clamp(72px, 9vw, 112px)}
.art-c .ac-col{min-width:0}
.art-c .ac-article{max-width:720px}

/* 進捗つき目次（PC：右に追従） */
.art-c .ac-side{display:flex;flex-direction:column;gap:24px;min-width:0}
.art-c .ac-hold{flex:1 1 auto}
.art-c .ac-stick{position:sticky;top:var(--stick);display:grid;gap:14px}
.art-c .ac-guide{border-radius:12px;background:#fff;box-shadow:0 0 0 1px var(--line), 0 24px 44px -34px rgba(16,40,60,.5);overflow:hidden}
.art-c .ac-guide-head{padding:16px 18px 14px;color:#fff;background:var(--navy)}
.art-c .ac-guide-row{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.art-c .ac-guide-t{display:flex;flex-direction:column;font-size:15px;font-weight:900;line-height:1.35}
.art-c .ac-guide-t .en{font-family:var(--en);font-size:12px;font-weight:700;letter-spacing:.24em;color:var(--sky)}
.art-c .ac-guide-pc{font-family:var(--en);font-size:15px;font-weight:800;line-height:1;color:rgba(255,255,255,.8)}
.art-c .ac-guide-pc b{font-size:34px;font-weight:900;color:#fff}
.art-c .ac-guide-bar{height:6px;margin-top:12px;border-radius:3px;background:rgba(255,255,255,.18);overflow:hidden}
.art-c .ac-guide-bar i{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg, var(--blue), var(--sky));transform:scaleX(0);transform-origin:0 50%}
.art-c .ac-guide-now{margin-top:8px;font-size:12px;font-weight:700;color:rgba(255,255,255,.78)}
.art-c .ac-guide-now b{font-family:var(--en);font-size:15px;font-weight:800;letter-spacing:.04em;color:#fff}
.art-c .ac-guide-list{position:relative;padding:10px 10px 12px}
.art-c .ac-side .ac-guide-list{max-height:calc(100vh - var(--stick) - 360px);min-height:180px;overflow-y:auto;overscroll-behavior:contain}
.art-c .ac-toc-link{--p:0;position:relative;display:grid;grid-template-columns:30px minmax(0,1fr);gap:10px;align-items:start;padding:8px 10px;border-radius:8px;font-size:13.5px;font-weight:500;line-height:1.6;color:var(--muted);text-decoration:none;transition:background-color .2s, color .2s}
.art-c .ac-toc-link::after{content:"";position:absolute;left:24px;top:38px;bottom:-8px;width:2px;background:var(--line)}
.art-c li:last-child > .ac-toc-link::after{display:none}
.art-c .ac-toc-no{position:relative;z-index:1;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#fff;box-shadow:inset 0 0 0 1.5px var(--line);font-family:var(--en);font-size:14px;font-weight:800;line-height:1;color:var(--muted)}
.art-c .ac-toc-tx{padding-top:3px}
.art-c .ac-toc-p{display:none;height:3px;margin-top:6px;border-radius:2px;background:var(--line);overflow:hidden}
.art-c .ac-toc-p i{display:block;height:100%;background:var(--blue);transform:scaleX(var(--p));transform-origin:0 50%}
.art-c .ac-toc-link:hover{background:var(--tint);color:var(--ink)}
.art-c .ac-toc-link.is-done{color:var(--text)}
.art-c .ac-toc-link.is-done::after{background:var(--blue)}
.art-c .ac-toc-link.is-done .ac-toc-no{background:var(--blue);box-shadow:none;color:#fff}
.art-c .ac-toc-link[aria-current]{background:var(--tint);color:var(--navy);font-weight:700}
.art-c .ac-toc-link[aria-current] .ac-toc-no{background:var(--navy);box-shadow:none;color:#fff}
.art-c .ac-toc-link[aria-current] .ac-toc-p{display:block}

/* スマホ・タブレットの目次（本文の前） */
.art-c .ac-guide--inline{display:none;margin-bottom:40px}

.art-c .ac-mini{padding:18px 20px 20px;border-radius:12px;color:#fff;background:linear-gradient(150deg, #479CD9 0%, #3483bf 50%, #1E5F8C 100%)}
.art-c .ac-mini-k{font-family:var(--en);font-size:12px;font-weight:700;letter-spacing:.24em;color:rgba(255,255,255,.88)}
.art-c .ac-mini-t{margin-top:2px;font-size:18px;font-weight:900;line-height:1.4}
.art-c .ac-mini-d{margin-top:6px;font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.92)}
.art-c .ac-mini a{display:flex;align-items:center;justify-content:center;gap:10px;min-height:46px;margin-top:12px;border-radius:999px;background:#fff;color:var(--deep);font-size:14.5px;font-weight:700;text-decoration:none}
.art-c .ac-mini a:hover .arr{transform:translateX(4px)}

/* =========================================================
   本文タイポグラフィ（content_html をそのまま差し込む）
   ========================================================= */
.art-c .ac-body{font-size:17px;line-height:2;letter-spacing:.03em;color:var(--text);overflow-wrap:anywhere;counter-reset:ac-sec}
.art-c .ac-body > *{margin-block:0}
.art-c .ac-body > * + *{margin-top:1.5em}
.art-c .ac-body > p:empty{display:none}
.art-c .ac-body strong{font-weight:700;color:var(--navy);background:linear-gradient(transparent 64%, rgba(71,156,217,.24) 64%)}
.art-c .ac-body a{color:var(--deep) !important;text-decoration-color:rgba(71,156,217,.75) !important;text-decoration-thickness:1px;text-underline-offset:4px !important;transition:color .2s}
.art-c .ac-body a:hover{color:var(--blue) !important}

/* h2：章番号つき */
.art-c .ac-body > h2{
  counter-increment:ac-sec;position:relative;
  display:grid;grid-template-columns:auto minmax(0,1fr);column-gap:18px;align-items:start;
  margin-top:3.3em;padding-top:22px;border-top:3px solid var(--navy);
  font-size:clamp(21px, .8vw + 15px, 26px);font-weight:900;line-height:1.55;letter-spacing:.02em;color:var(--ink);
  scroll-margin-top:96px;
}
.art-c .ac-body > h2::before{content:counter(ac-sec, decimal-leading-zero);display:block;min-width:1.4em;padding-top:.02em;font-family:var(--en);font-size:2.15em;font-weight:900;line-height:.82;letter-spacing:-.01em;color:var(--blue)}
.art-c .ac-body > h2::after{content:"";position:absolute;left:0;top:-3px;width:72px;height:3px;background:var(--blue)}
.art-c .ac-body > h2:focus{outline:none}
.art-c .ac-body > h2 + *{margin-top:1.4em}
.art-c .ac-body > h3{margin-top:2.4em;padding:.5em .9em;border-left:4px solid var(--blue);border-radius:0 8px 8px 0;background:var(--paper);font-size:clamp(17.5px, .4vw + 15px, 19.5px);font-weight:900;line-height:1.6;color:var(--ink)}
.art-c .ac-body > h2 + h3{margin-top:1.8em}
.art-c .ac-body > h3 + *{margin-top:1em}
.art-c .ac-body > h3[data-faq]{position:relative;padding-left:2.6em;border-left-color:var(--navy)}
.art-c .ac-body > h3[data-faq]::before{content:"Q";position:absolute;left:.75em;top:.55em;display:grid;place-items:center;width:1.45em;height:1.45em;border-radius:4px;background:var(--navy);color:#fff;font-family:var(--en);font-size:.9em;font-weight:800;line-height:1}

/* ul：チェックリスト */
.art-c .ac-body > ul{padding:1.1em 1.3em;border:1px solid var(--line);border-radius:10px;background:#fff;box-shadow:0 14px 30px -26px rgba(16,40,60,.45);font-size:.96em}
.art-c .ac-body li{position:relative;line-height:1.85}
.art-c .ac-body ul > li{padding-left:2em}
.art-c .ac-body ul > li + li{margin-top:.5em;padding-top:.5em;border-top:1px dashed var(--line)}
.art-c .ac-body ul > li::before{content:"";position:absolute;left:0;top:.3em;width:1.25em;height:1.25em;border-radius:4px;background:var(--tint);box-shadow:inset 0 0 0 1px var(--sky)}
.art-c .ac-body ul > li::after{content:"";position:absolute;left:.43em;top:.5em;width:.36em;height:.66em;border-right:2px solid var(--deep);border-bottom:2px solid var(--deep);transform:rotate(45deg)}
.art-c .ac-body ul > li + li::before{top:calc(.5em + .3em)}
.art-c .ac-body ul > li + li::after{top:calc(.5em + .5em)}
/* ol：ステップ（番号＋つなぎの線） */
.art-c .ac-body > ol{counter-reset:ac-ol;padding:1.2em 1.3em .4em;border-radius:10px;background:var(--paper);font-size:.96em}
.art-c .ac-body ol > li{counter-increment:ac-ol;padding:0 0 .9em 2.7em}
.art-c .ac-body ol > li::before{content:counter(ac-ol);position:absolute;left:0;top:.12em;z-index:1;display:grid;place-items:center;width:1.8em;height:1.8em;border-radius:50%;background:var(--navy);color:#fff;font-family:var(--en);font-size:.95em;font-weight:800;line-height:1}
.art-c .ac-body ol > li::after{content:"";position:absolute;left:.82em;top:1.9em;bottom:.1em;width:2px;background:var(--sky)}
.art-c .ac-body ol > li:last-child::after{display:none}

/* 表（この記事には無いが、他の記事用に用意） */
.art-c .ac-body table{width:100%;border-collapse:collapse;font-size:.9em;line-height:1.7;background:#fff}
.art-c .ac-body th,.art-c .ac-body td{padding:.75em .9em;border:1px solid var(--line);text-align:left;vertical-align:top}
.art-c .ac-body thead th{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:700}
.art-c .ac-body tbody th{background:var(--tint);font-weight:700;color:var(--navy)}
.art-c .ac-body tbody tr:nth-child(even) td{background:var(--paper)}
.art-c .ac-body figure{max-width:100%;overflow-x:auto}
.art-c .ac-body blockquote{padding:1em 1.3em;border-left:4px solid var(--navy);background:var(--paper);color:var(--muted)}

/* 著者コメント（.author-comment）：POINT つきの吹き出し */
.art-c .ac-body .author-comment{margin:2.4em 0 !important;gap:18px !important}
.art-c .ac-body .author-comment > div:first-child > div{background:var(--tint) !important;box-shadow:0 0 0 2px var(--navy)}
.art-c .ac-body .author-comment > div:first-child span{border-radius:4px !important;background:var(--navy) !important;font-family:var(--ja)}
.art-c .ac-body .author-comment > div:last-child{border:1.5px solid var(--navy) !important;border-radius:10px !important;background:#f4f8fb !important;color:var(--ink) !important;box-shadow:5px 5px 0 rgba(19,50,76,.12) !important;padding:16px 22px 20px !important}
.art-c .ac-body .author-comment > div:last-child::before{content:"POINT";display:inline-block;margin-bottom:6px;padding:1px 10px;border-radius:3px;background:var(--blue);color:#fff;font-family:var(--en);font-size:12px;font-weight:800;letter-spacing:.2em;line-height:1.6}
.art-c .ac-body .author-comment > div:last-child > span[aria-hidden]{background:#f4f8fb !important;border-color:var(--navy) !important;transform:rotate(45deg)}
.art-c .ac-body .author-comment > div:last-child p{font-family:var(--ja) !important;font-size:15.5px;font-weight:500;line-height:1.95 !important;letter-spacing:.03em !important}

/* 関連記事カード（.nutrits-related-card） */
.art-c .ac-body .nutrits-related-card{margin:2em 0 !important}
.art-c .ac-body .nutrits-related-card a{gap:18px !important;padding:14px 18px 14px 14px !important;border:1px solid var(--line) !important;border-left:4px solid var(--navy) !important;border-radius:10px !important;background:#fff !important;color:var(--ink) !important;transition:border-color .2s, box-shadow .2s}
.art-c .ac-body .nutrits-related-card a:hover{border-color:var(--blue) !important;box-shadow:0 18px 32px -24px rgba(19,50,76,.6) !important}
.art-c .ac-body .nutrits-related-card a > img{border-radius:6px !important}
.art-c .ac-body .nutrits-related-card a > span:first-of-type > span:first-child{padding:2px 10px !important;border-radius:3px !important;background:var(--navy) !important;color:#fff !important;font-weight:700;letter-spacing:.06em !important}
.art-c .ac-body .nutrits-related-card a > span:first-of-type > span:last-child{color:var(--ink) !important}
.art-c .ac-body .nutrits-related-card a:hover > span:first-of-type > span:last-child{color:var(--deep) !important}
.art-c .ac-body .nutrits-related-card a > span:last-of-type{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--tint);color:var(--navy) !important;font-family:var(--en);font-size:20px !important;font-weight:800;transition:background-color .2s, color .2s}
.art-c .ac-body .nutrits-related-card a:hover > span:last-of-type{background:var(--blue);color:#fff !important}

/* 本文末の案内ボックス（インライン style の濃色ボックス） */
.art-c .ac-body > div[style*="252c29"]{position:relative;overflow:hidden;margin:2.6em 0 0 !important;padding:clamp(22px, 4vw, 32px) !important;border-radius:12px;background:linear-gradient(160deg, var(--navy2) 0%, var(--navy) 60%, #1a4a70 100%) !important;color:#fff !important}
.art-c .ac-body > div[style*="252c29"] > p:first-child{font-size:19px;font-weight:900;line-height:1.6}
.art-c .ac-body > div[style*="252c29"] > p + p{margin-top:16px}
.art-c .ac-body > div[style*="252c29"] a{display:inline-flex !important;align-items:center;min-height:52px;padding:12px 26px !important;border-radius:999px;background:var(--blue) !important;color:#fff !important;font-size:15.5px;font-weight:700;text-decoration:none !important;transition:background-color .2s}
.art-c .ac-body > div[style*="252c29"] a:hover{background:#fff !important;color:var(--navy) !important}

/* ---------- 記事末：シェア・著者・CTA ---------- */
.art-c .ac-share-box{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 20px;margin-top:56px;padding:18px 20px;border-radius:10px;background:var(--paper);box-shadow:inset 0 0 0 1px var(--line)}
.art-c .ac-share-box p{font-size:14.5px;font-weight:700}
.art-c .ac-share-box p span{margin-right:10px;font-family:var(--en);font-size:13px;font-weight:700;letter-spacing:.22em;color:var(--blue)}
.art-c .ac-share{display:flex;flex-wrap:wrap;gap:8px}
.art-c .ac-sh{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 16px;border-radius:8px;font-size:13.5px;font-weight:700;line-height:1.3;text-decoration:none;white-space:nowrap;transition:background-color .2s, color .2s, border-color .2s}
.art-c .ac-sh svg{flex:none;width:18px;height:18px}
.art-c .ac-sh--x{background:var(--ink);color:#fff}
.art-c .ac-sh--x:hover{background:#2a343c}
.art-c .ac-sh--line{background:#06C755;color:#fff}
.art-c .ac-sh--line:hover{background:#05a948}
.art-c .ac-sh--copy{border:1.5px solid var(--line);background:#fff;color:var(--navy)}
.art-c .ac-sh--copy:hover{border-color:var(--blue)}
.art-c .ac-sh.is-copied{border-color:var(--blue);background:var(--blue);color:#fff}
.art-c .ac-share--hero .ac-sh{width:44px;padding:0;border:1.5px solid rgba(255,255,255,.55);background:transparent;color:#fff}
.art-c .ac-share--hero .ac-sh:hover{background:rgba(255,255,255,.12);border-color:#fff}
.art-c .ac-share--hero .ac-sh-l{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.art-c .ac-meta .ac-share{margin-left:auto}

.art-c .ac-author{margin-top:40px;overflow:hidden;border-radius:12px;box-shadow:0 0 0 1px var(--line);scroll-margin-top:96px}
.art-c .ac-author-head{display:flex;align-items:baseline;gap:12px;padding:12px 24px;background:var(--navy);color:#fff;font-size:13px;font-weight:700}
.art-c .ac-author-head .en{font-family:var(--en);font-size:13px;font-weight:700;letter-spacing:.24em;color:var(--sky)}
.art-c .ac-author-in{display:grid;grid-template-columns:112px minmax(0,1fr);gap:24px;padding:26px 24px 24px;align-items:start}
.art-c .ac-author-ph{width:112px;height:112px;border-radius:50%;overflow:hidden;background:var(--tint);box-shadow:0 0 0 3px #fff, 0 0 0 5px var(--navy)}
.art-c .ac-author-ph img{width:100%;height:100%;object-fit:cover;object-position:50% 18%}
.art-c .ac-author h2{font-size:22px;line-height:1.4}
.art-c .ac-author h2 small{display:block;margin-bottom:2px;font-size:13px;font-weight:700;color:var(--deep)}
.art-c .ac-author-bio{margin-top:10px;font-size:14.5px;line-height:1.9;color:var(--text)}
.art-c .ac-author-q{margin-top:12px;padding:12px 16px;border-radius:0 8px 8px 0;border-left:3px solid var(--navy);background:var(--paper);font-size:14px;line-height:1.85;color:var(--muted)}
.art-c .ac-author-q cite{display:block;margin-top:4px;font-size:12px;font-style:normal;font-weight:700;color:var(--navy)}
.art-c .ac-badges{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 16px;align-items:center;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.art-c .ac-badges dt{font-size:12.5px;font-weight:700;color:var(--muted)}
.art-c .ac-badges dd{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.art-c .ac-badges dd span{display:grid;place-items:center;width:70px;height:70px;padding:7px;border:1px solid var(--line);border-radius:8px;background:#fff}
.art-c .ac-badges img{width:auto;height:auto;max-width:100%;max-height:54px;object-fit:contain}
.art-c .ac-author-link{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:14px;font-weight:700;color:var(--deep);text-decoration:none}
.art-c .ac-author-link:hover{text-decoration:underline;text-underline-offset:4px}
.art-c .ac-author-link:hover .arr{transform:translateX(4px)}

.art-c .ac-cta{position:relative;overflow:hidden;margin-top:40px;padding:clamp(28px, 4vw, 40px);border-radius:12px;color:#fff;background:linear-gradient(160deg, var(--navy2) 0%, var(--navy) 55%, #1a4a70 100%)}
.art-c .ac-cta .ac-lines{-webkit-mask-image:none;mask-image:none;opacity:.7}
.art-c .ac-cta > *{position:relative}
.art-c .ac-cta-k{display:inline-flex;padding:2px 12px;border-radius:4px;background:var(--blue);font-family:var(--en);font-size:13px;font-weight:800;letter-spacing:.2em}
.art-c .ac-cta h2{margin-top:14px;font-size:clamp(21px, 1vw + 14px, 26px);line-height:1.5}
.art-c .ac-cta-l{margin-top:10px;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.88)}
.art-c .ac-cta-steps{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));gap:10px;margin-top:22px}
.art-c .ac-cta-steps li{padding:14px 14px 16px;border:1px solid rgba(255,255,255,.22);border-radius:10px;background:rgba(255,255,255,.06);font-size:14px;font-weight:700;line-height:1.55}
.art-c .ac-cta-steps b{display:block;margin-bottom:4px;font-family:var(--en);font-size:26px;font-weight:900;line-height:1;color:var(--sky)}
.art-c .ac-cta-act{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.art-c .ac-btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:54px;padding:12px 26px;border-radius:999px;font-size:15.5px;font-weight:700;line-height:1.4;text-decoration:none;transition:background-color .2s, color .2s}
.art-c .ac-btn:hover .arr{transform:translateX(4px)}
.art-c .ac-btn--blue{background:var(--blue);color:#fff;box-shadow:0 12px 30px -10px rgba(71,156,217,.6)}
.art-c .ac-btn--blue:hover{background:#fff;color:var(--navy)}
.art-c .ac-btn--ghost{border:1.5px solid rgba(255,255,255,.75);color:#fff}
.art-c .ac-btn--ghost:hover{background:rgba(255,255,255,.12)}
.art-c .ac-cta-sub{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.2);font-size:13.5px;color:rgba(255,255,255,.88)}
.art-c .ac-cta-sub a{display:inline-flex;align-items:center;gap:6px;min-height:36px;font-weight:700;color:#fff;text-underline-offset:4px}

/* ---------- 関連記事 ---------- */
.art-c .ac-related{margin-top:clamp(56px, 7vw, 72px)}
.art-c .ac-sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:10px 20px;padding-bottom:14px;border-bottom:3px solid var(--navy)}
.art-c .ac-sec-k{font-family:var(--en);font-size:13px;font-weight:700;letter-spacing:.26em;color:var(--blue)}
.art-c .ac-sec-head h2{margin-top:4px;font-size:clamp(22px, 1vw + 15px, 28px);line-height:1.4}
.art-c .ac-more{display:inline-flex;align-items:center;gap:8px;min-height:40px;font-size:14px;font-weight:700;color:var(--deep);text-decoration:none}
.art-c .ac-more:hover{text-decoration:underline;text-underline-offset:4px}
.art-c .ac-more:hover .arr{transform:translateX(4px)}
.art-c .ac-rel-list{display:grid;grid-template-columns:repeat(3, minmax(0,1fr));gap:18px;margin-top:22px}
.art-c .ac-rel-list > li{display:flex}
.art-c .ac-rel-card{display:flex;flex-direction:column;width:100%;overflow:hidden;border-radius:10px;background:#fff;box-shadow:0 0 0 1px var(--line);text-decoration:none;transition:box-shadow .2s, transform .2s}
.art-c .ac-rel-card:hover{box-shadow:0 0 0 2px var(--blue), 0 22px 40px -28px rgba(19,50,76,.7);transform:translateY(-3px)}
.art-c .ac-rel-ph{position:relative;display:block;aspect-ratio:16 / 9;overflow:hidden;background:linear-gradient(135deg, #e6f0f7 0%, #d3e3ef 100%)}
.art-c .ac-rel-ph img{width:100%;height:100%;object-fit:cover}
.art-c .ac-rel-b{display:flex;flex-direction:column;gap:8px;padding:14px 16px 18px}
.art-c .ac-rel-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px}
.art-c .ac-rel-cat{padding:1px 8px;border-radius:3px;background:var(--navy);color:#fff;font-size:11.5px;font-weight:700;line-height:1.7}
.art-c .ac-rel-meta time{font-family:var(--en);font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--muted)}
.art-c .ac-rel-card h3{font-size:15px;font-weight:700;line-height:1.65}
.art-c .ac-rel-card:hover h3{color:var(--deep)}

/* ---------- サイドバー下段（人気記事・カテゴリ） ---------- */
.art-c .ac-widget{padding:18px 18px 12px;border-radius:12px;background:#fff;box-shadow:0 0 0 1px var(--line)}
.art-c .ac-wh{display:flex;align-items:baseline;gap:10px;padding-bottom:10px;border-bottom:3px solid var(--navy);font-size:16px;line-height:1.4}
.art-c .ac-wh .en{font-family:var(--en);font-size:12px;font-weight:700;letter-spacing:.24em;color:var(--blue)}
.art-c .ac-pop > li + li{border-top:1px solid var(--line)}
.art-c .ac-pop a{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;align-items:start;padding:12px 0;text-decoration:none}
.art-c .ac-pop-no{display:grid;place-items:center;width:30px;height:30px;border-radius:6px;background:var(--navy);color:#fff;font-family:var(--en);font-size:16px;font-weight:800;line-height:1}
.art-c .ac-pop li:nth-child(n+4) .ac-pop-no{background:var(--tint);color:var(--navy)}
.art-c .ac-pop-t{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:13.5px;font-weight:700;line-height:1.6}
.art-c .ac-pop a:hover .ac-pop-t{color:var(--deep);text-decoration:underline;text-underline-offset:3px}
.art-c .ac-pop-d{display:block;margin-top:3px;font-family:var(--en);font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--muted)}
.art-c .ac-cats a{display:flex;align-items:center;gap:10px;min-height:46px;padding:6px 2px;border-bottom:1px solid var(--line);font-size:14px;font-weight:700;line-height:1.5;text-decoration:none;transition:color .2s}
.art-c .ac-cats a:hover{color:var(--deep)}
.art-c .ac-cats li:last-child a{border-bottom:0}
.art-c .ac-cats .nm{margin-right:auto}
.art-c .ac-cats .n{font-family:var(--en);font-size:16px;font-weight:800;color:var(--navy)}
.art-c .ac-cats a.is-current{color:var(--deep)}
.art-c .ac-cats a.is-current .n{padding:0 8px;border-radius:4px;background:var(--navy);color:#fff}

/* ---------- 比較用ラベル・通知 ---------- */
.art-c .ac-variant{position:fixed;left:12px;bottom:12px;z-index:90;margin:0;padding:7px 14px;border-radius:999px;background:rgba(16,22,27,.88);color:#fff;font-size:12px;font-weight:700;line-height:1.4;letter-spacing:.04em;pointer-events:none}
.art-c .ac-toast{position:fixed;left:50%;bottom:56px;z-index:120;max-width:calc(100% - 32px);margin:0;padding:10px 18px;border-radius:999px;background:var(--ink);color:#fff;font-size:13px;font-weight:700;line-height:1.5;transform:translateX(-50%);opacity:0;pointer-events:none;transition:opacity .25s}
.art-c .ac-toast.is-show{opacity:1}

/* =========================================================
   レスポンシブ
   ========================================================= */
@media (max-width:1199.98px){
  .art-c .ac-layout{grid-template-columns:minmax(0,1fr) 280px;column-gap:40px}
}
@media (max-width:1023.98px){
  .art-c{--hh:64px;--stick:80px}
  .art-c .ac-hero-in{grid-template-columns:minmax(0,1fr)}
  .art-c .ac-eye{order:-1;max-width:720px}
  .art-c .ac-eye::before{display:none}
  .art-c .ac-layout{grid-template-columns:minmax(0,1fr)}
  .art-c .ac-article{max-width:none}
  .art-c .ac-guide--inline{display:block}
  .art-c .ac-side .ac-guide{display:none}
  .art-c .ac-stick{position:static}
  .art-c .ac-side{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:20px;align-items:start}
  .art-c .ac-hold{grid-column:1 / -1}
  .art-c .ac-rel-list{grid-template-columns:repeat(2, minmax(0,1fr))}
}
@media (max-width:767.98px){
  .art-c .ac-side{grid-template-columns:minmax(0,1fr)}
  .art-c .ac-rel-list{grid-template-columns:minmax(0,1fr);gap:14px}
  .art-c .ac-rel-card{flex-direction:row}
  .art-c .ac-rel-ph{flex:0 0 38%;aspect-ratio:auto;min-height:96px}
  .art-c .ac-rel-b{padding:12px 14px}
  .art-c .ac-rel-card h3{font-size:14px}
  .art-c .ac-cta-steps{grid-template-columns:minmax(0,1fr)}
  .art-c .ac-cta-steps li{display:flex;align-items:center;gap:12px;padding:10px 14px}
  .art-c .ac-cta-steps b{margin:0;font-size:22px}
}
@media (max-width:600px){
  .art-c .ac-wrap{width:calc(100% - 32px)}
  .art-c .ac-hero h1{font-size:clamp(23px, 6.2vw, 28px)}
  .art-c .ac-lead{font-size:14px}
  .art-c .ac-meta .ac-share{margin-left:0}
  .art-c .ac-stats > div{padding:12px 10px 10px}
  .art-c .ac-stats dt{font-size:11px;letter-spacing:.14em}
  .art-c .ac-stats dd{font-size:12px}
  .art-c .ac-stats dd b{font-size:26px}
  .art-c .ac-stats dd b.sm{font-size:18px}
  .art-c .ac-body{font-size:16px;line-height:1.95;letter-spacing:.02em}
  .art-c .ac-body > h2{column-gap:12px;margin-top:2.9em;padding-top:18px;font-size:20px}
  .art-c .ac-body > h2::before{font-size:2em}
  .art-c .ac-body > h3{font-size:17px}
  .art-c .ac-body > ul{padding:1em 1.05em}
  .art-c .ac-body > ol{padding:1.1em 1.05em .3em}
  .art-c .ac-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .art-c .ac-body th,.art-c .ac-body td{min-width:7.5em}
  .art-c .ac-body .author-comment{grid-template-columns:62px minmax(0,1fr) !important;gap:12px !important}
  .art-c .ac-body .author-comment > div:first-child > div,
  .art-c .ac-body .author-comment > div:first-child img{width:60px !important;height:60px !important}
  .art-c .ac-body .author-comment > div:first-child span{min-width:0 !important;padding:3px 8px !important;font-size:11px !important}
  .art-c .ac-body .author-comment > div:last-child{padding:14px 16px 17px !important}
  .art-c .ac-body .author-comment > div:last-child > span[aria-hidden]{top:22px !important}
  .art-c .ac-body .author-comment > div:last-child p{font-size:14.5px}
  .art-c .ac-body .nutrits-related-card a{gap:12px !important;padding:12px !important}
  .art-c .ac-body .nutrits-related-card a > span:last-of-type{width:32px;height:32px}
  .art-c .ac-share-box{flex-direction:column;align-items:flex-start;padding:16px}
  .art-c .ac-share-box .ac-share{width:100%;display:grid;grid-template-columns:repeat(3, minmax(0,1fr))}
  .art-c .ac-share-box .ac-sh{padding:0 8px;font-size:12.5px;gap:6px}
  .art-c .ac-author-head{padding:12px 18px}
  .art-c .ac-author-in{grid-template-columns:minmax(0,1fr);gap:16px;padding:22px 18px}
  .art-c .ac-author-ph{width:88px;height:88px}
  .art-c .ac-badges{grid-template-columns:minmax(0,1fr)}
  .art-c .ac-badges dd span{width:calc(25% - 6px);min-width:62px;height:auto;aspect-ratio:1}
  .art-c .ac-cta{padding:26px 20px}
  .art-c .ac-cta-act{flex-direction:column}
  .art-c .ac-cta-act .ac-btn{width:100%}
  .art-c .ac-variant{left:8px;bottom:8px;padding:5px 10px;font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  .art-c *,.art-c *::before,.art-c *::after{transition-duration:0s !important;animation-duration:0s !important}
}
/* 記事ページは本文側の読了バーを使うため、共通ヘッダーの読了バーは隠す */ .nav-a .na-progress{display:none!important}
/* 日本語見出しの改行：文節で折り返し、最終行が1文字にならないよう整える */ :where(h1,h2,h3){text-wrap:balance;word-break:auto-phrase} :where(h1,h2,h3) .kp, :where(h1,h2,h3).kp{word-break:auto-phrase}

/* WordPress の記事データ用（要点ボックス：functions.php の article-editorial.json から出力） */
.art-c .article-summary{margin:0 0 36px;padding:22px 24px;border:1.5px solid #cddce8;border-radius:12px;background:#f3f8fc}
.art-c .article-summary p{margin:0 0 10px}
.art-c .article-summary-audience{font-size:13px;font-weight:700;color:#1E5F8C}
.art-c .article-summary ol{margin:8px 0 12px;padding-left:1.4em}
.art-c .article-summary-note{font-size:13px;color:#4a5a66}
.art-c .article-summary a{font-weight:700;color:#1E5F8C}