/* =============================================
   SALUTO Knowledge / Article Pages CSS
   /css/knowledge.css
   SALUTO ブランドデザイン完全準拠
   lp-common.css と併用すること
   Last updated: 2026-09-04
   ============================================= */

/* ===== PAGE BASE ===== */
.kn-page { padding-top: 64px; min-height: 100vh; background: #fff; }

/* ===== BREADCRUMB ===== */
.kn-breadcrumb { background: var(--bg-soft); border-bottom: 1px solid var(--border); overflow: hidden; }
.kn-breadcrumb-in { max-width: 1160px; margin: 0 auto; padding: 12px 48px; box-sizing: border-box; }
.kn-breadcrumb ol { list-style: none; display: flex; align-items: center; flex-wrap: wrap; gap: 0; }
.kn-breadcrumb li { display: flex; align-items: center; font-size: .78rem; color: var(--text-muted); font-weight: 600; }
.kn-breadcrumb li+li::before { content: '/'; margin: 0 8px; color: var(--border); font-weight: 400; }
.kn-breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color .2s; }
.kn-breadcrumb a:hover { color: var(--blue); text-decoration: underline; }
.kn-breadcrumb li[aria-current="page"] { color: var(--text); font-weight: 700; }

/* ===== ARTICLE HERO IMAGE ===== */
.kn-hero { width: 100%; background: var(--bg-soft); overflow: hidden; max-height: 420px; }
.kn-hero img { width: 100%; height: 420px; object-fit: cover; object-position: center; display: block; }

/* ===== ARTICLE LAYOUT ===== */
.kn-layout { max-width: 1160px; margin: 0 auto; padding: 64px 48px 96px; display: grid; grid-template-columns: 1fr 300px; gap: 56px; align-items: start; }
.kn-main { min-width: 0; }
.kn-sidebar { position: sticky; top: 88px; display: flex; flex-direction: column; gap: 24px; }

/* ===== ARTICLE META ===== */
.kn-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.kn-meta time { font-size: .78rem; color: var(--text-muted); font-weight: 600; }

/* ===== ARTICLE H1 ===== */
.kn-h1 { font-family: 'Zen Kaku Gothic New',sans-serif; font-size: clamp(22px,3.5vw,36px); font-weight: 900; line-height: 1.4; letter-spacing: -.025em; color: var(--text); margin-bottom: 20px; text-wrap: balance; }

/* ===== LEAD TEXT ===== */
.kn-lead { font-size: 1.02rem; line-height: 1.95; color: var(--text-mid); font-weight: 500; margin-bottom: 36px; padding-bottom: 36px; border-bottom: 1px solid var(--border); }

/* ===== TABLE OF CONTENTS ===== */
.kn-toc { background: var(--bg-soft); border: 1.5px solid var(--border); border-radius: 14px; padding: 24px 28px; margin-bottom: 48px; }
.kn-toc-title { font-size: .78rem; font-weight: 800; letter-spacing: .08em; color: var(--text-muted); text-transform: uppercase; margin-bottom: 14px; display: flex; align-items: center; gap: 7px; }
.kn-toc ol { list-style: none; display: flex; flex-direction: column; gap: 8px; counter-reset: toc-counter; }
.kn-toc li { counter-increment: toc-counter; display: flex; align-items: baseline; gap: 8px; }
.kn-toc li::before { content: counter(toc-counter); font-family: 'Inter',sans-serif; font-size: .7rem; font-weight: 900; color: var(--blue); background: var(--blue-light); width: 20px; height: 20px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; border: 1.5px solid var(--border-blue); line-height: 1; }
.kn-toc a { font-size: .88rem; color: var(--text-mid); font-weight: 600; text-decoration: none; line-height: 1.55; transition: color .2s; }
.kn-toc a:hover { color: var(--blue); text-decoration: underline; }

/* ===== ARTICLE BODY H2/H3 ===== */
.kn-article h2,.kn-h2 { font-family: 'Zen Kaku Gothic New',sans-serif; font-size: clamp(18px,2.5vw,24px); font-weight: 900; line-height: 1.4; letter-spacing: -.02em; color: var(--text); margin: 56px 0 20px; padding: 18px 20px 18px 24px; background: var(--bg-soft); border-radius: 0 10px 10px 0; border-left: 5px solid var(--blue); position: relative; }
.kn-article h3,.kn-h3 { font-size: clamp(16px,2vw,19px); font-weight: 800; line-height: 1.5; letter-spacing: -.015em; color: var(--text); margin: 40px 0 14px; display: flex; align-items: baseline; gap: 10px; }
.kn-article h3::before,.kn-h3::before { content: ''; display: inline-block; width: 4px; height: 1.1em; background: var(--grad-main); border-radius: 2px; flex-shrink: 0; }
.kn-article h4,.kn-h4 { font-size: .98rem; font-weight: 800; color: var(--text); margin: 28px 0 10px; }
.kn-article p { font-size: .97rem; line-height: 1.95; color: var(--text-mid); font-weight: 500; margin-bottom: 20px; overflow-wrap: anywhere; }
.kn-article strong { color: var(--text); font-weight: 800; }

/* ===== CHECKLIST ===== */
.kn-checklist { list-style: none; display: flex; flex-direction: column; gap: 10px; margin: 20px 0 28px; padding: 20px 24px; background: var(--bg-soft); border-radius: 12px; border: 1.5px solid var(--border); }
.kn-checklist li { display: flex; align-items: flex-start; gap: 10px; font-size: .93rem; color: var(--text); font-weight: 600; line-height: 1.65; }
.kn-checklist li::before { content: '✓'; flex-shrink: 0; width: 20px; height: 20px; background: var(--green-light); color: var(--green); border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: .72rem; font-weight: 900; border: 1.5px solid #A7F3D0; margin-top: 1px; }
.kn-checklist.warn li::before { content: '!'; background: #FEF2F2; color: #DC2626; border-color: #FECACA; }
.kn-checklist.blue li::before { content: '✓'; background: var(--blue-light); color: var(--blue-dark); border-color: var(--border-blue); }

/* ===== POINT CARDS ===== */
.kn-point-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin: 24px 0 32px; }
.kn-point-card { background: #fff; border: 1.5px solid var(--border); border-radius: 16px; padding: 24px 26px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.kn-point-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad-main); }
.kn-point-card-num { font-family: 'Inter',sans-serif; font-size: .68rem; font-weight: 900; color: var(--blue); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 8px; }
.kn-point-card h4 { font-size: 1rem; font-weight: 800; color: var(--text); margin-bottom: 10px; line-height: 1.5; }
.kn-point-card p { font-size: .9rem; color: var(--text-mid); line-height: 1.85; margin: 0; font-weight: 500; }

/* ===== FLOW DIAGRAM ===== */
.kn-flow { display: flex; flex-direction: column; align-items: center; gap: 0; margin: 28px 0 36px; padding: 28px 20px; background: var(--bg-soft); border-radius: 16px; border: 1.5px solid var(--border); }
.kn-flow-item { display: flex; align-items: center; gap: 14px; background: #fff; border: 1.5px solid var(--border); border-radius: 12px; padding: 14px 22px; width: 100%; max-width: 400px; box-shadow: var(--shadow-sm); transition: box-shadow .2s; }
.kn-flow-item:hover { box-shadow: var(--shadow-md); }
.kn-flow-icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; font-size: 1.1rem; flex-shrink: 0; background: var(--blue-light); border: 1.5px solid var(--border-blue); }
.kn-flow-item.accent .kn-flow-icon { background: var(--green-light); border-color: #A7F3D0; }
.kn-flow-item.warn .kn-flow-icon { background: #FEF2F2; border-color: #FECACA; }
.kn-flow-item.end .kn-flow-icon { background: var(--green-light); border-color: #A7F3D0; }
.kn-flow-text strong { display: block; font-size: .92rem; font-weight: 800; color: var(--text); margin-bottom: 2px; }
.kn-flow-text span { font-size: .78rem; color: var(--text-muted); font-weight: 500; }
.kn-flow-arrow { width: 2px; height: 24px; background: linear-gradient(180deg,var(--border-blue),var(--blue)); margin: 0 auto; position: relative; }
.kn-flow-arrow::after { content: ''; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%); border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 7px solid var(--blue); }

/* ===== COMPARISON TABLE ===== */
.kn-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 14px; border: 1.5px solid var(--border); box-shadow: var(--shadow-md); margin: 24px 0 36px; }
.kn-table { width: 100%; border-collapse: collapse; min-width: 480px; background: #fff; }
.kn-table th { background: var(--bg-soft); padding: 12px 16px; font-size: .78rem; font-weight: 800; letter-spacing: .04em; color: var(--text); text-align: center; border-bottom: 1.5px solid var(--border); }
.kn-table th:first-child { text-align: left; }
.kn-table th.highlight { background: var(--blue-light); color: var(--blue-dark); border-bottom: 2px solid var(--blue); }
.kn-table td { padding: 11px 16px; font-size: .86rem; color: var(--text-mid); font-weight: 500; border-bottom: 1px solid var(--border); text-align: center; vertical-align: middle; }
.kn-table td:first-child { text-align: left; color: var(--text); font-weight: 700; }
.kn-table td.highlight { background: #F0F7FF; }
.kn-table .check { color: var(--green); font-size: 1rem; font-weight: 900; }
.kn-table .cross { color: var(--border); font-size: 1rem; }
.kn-table .partial { color: var(--amber); font-size: .75rem; font-weight: 800; }
.kn-table .hl-val { color: var(--blue-dark); font-weight: 800; }
.kn-table tr:hover td { background: #F8FAFC; }
.kn-table tr:hover td.highlight { background: #E8F4FF; }

/* ===== SUMMARY BOX ===== */
.kn-summary { background: var(--blue-light); border: 1.5px solid var(--border-blue); border-radius: 16px; padding: 28px 30px; margin: 48px 0 40px; }
.kn-summary-title { font-size: .78rem; font-weight: 800; letter-spacing: .08em; color: var(--blue-dark); text-transform: uppercase; margin-bottom: 14px; display: flex; align-items: center; gap: 6px; }
.kn-summary ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.kn-summary li { display: flex; align-items: flex-start; gap: 8px; font-size: .92rem; color: var(--text); font-weight: 600; line-height: 1.65; }
.kn-summary li::before { content: '→'; color: var(--blue); font-weight: 900; flex-shrink: 0; margin-top: 1px; }

/* ===== CALLOUT ===== */
.kn-callout { border-left: 4px solid var(--blue); background: var(--blue-light); border-radius: 0 10px 10px 0; padding: 16px 20px; margin: 20px 0; font-size: .9rem; color: var(--text-mid); line-height: 1.85; font-weight: 500; }
.kn-callout.green { border-color: var(--green); background: var(--green-light); }
.kn-callout.coral { border-color: var(--coral); background: var(--coral-light); }
.kn-callout strong { color: var(--text); display: block; font-size: .92rem; margin-bottom: 4px; font-weight: 800; }

/* ===== SALUTO CTA BLOCK ===== */
.kn-cta { background: var(--grad-main); border-radius: 20px; padding: 40px 36px; text-align: center; margin: 56px 0 48px; position: relative; overflow: hidden; }
.kn-cta::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px); background-size: 28px 28px; }
.kn-cta-in { position: relative; z-index: 1; }
.kn-cta-eyebrow { font-size: .72rem; font-weight: 800; color: rgba(255,255,255,.7); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 12px; }
.kn-cta h2,.kn-cta-h { font-family: 'Zen Kaku Gothic New',sans-serif; font-size: clamp(18px,3vw,26px); font-weight: 900; color: #fff; line-height: 1.4; margin-bottom: 12px; letter-spacing: -.02em; }
.kn-cta h2::before { display: none; }
.kn-cta p,.kn-cta-desc { font-size: .9rem; color: rgba(255,255,255,.85); line-height: 1.8; margin-bottom: 24px; }
.kn-cta-btns { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.kn-cta-note { font-size: .75rem; color: rgba(255,255,255,.65); margin-top: 12px; }

/* ===== RELATED ARTICLES ===== */
.kn-related { margin-top: 56px; padding-top: 40px; border-top: 1.5px solid var(--border); }
.kn-related-title { font-size: .78rem; font-weight: 800; letter-spacing: .1em; color: var(--text-muted); text-transform: uppercase; margin-bottom: 20px; }
.kn-card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.kn-article-card { background: #fff; border: 1.5px solid var(--border); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all .25s; text-decoration: none; color: inherit; display: block; }
.kn-article-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--border-blue); }
.kn-card-thumb { width: 100%; aspect-ratio: 16/9; background: var(--bg-soft); overflow: hidden; border-bottom: 1px solid var(--border); }
.kn-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.kn-card-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--blue-light),#F5F3FF); font-size: 2rem; }
.kn-card-body { padding: 14px 16px 18px; }
.kn-card-cat { font-size: .68rem; font-weight: 800; letter-spacing: .07em; color: var(--blue-dark); text-transform: uppercase; margin-bottom: 6px; }
.kn-card-title { font-size: .87rem; font-weight: 800; color: var(--text); line-height: 1.55; }
.kn-card-date { font-size: .72rem; color: var(--text-muted); margin-top: 8px; font-weight: 500; }

/* ===== SIDEBAR ===== */
.kn-sb-card { background: #fff; border: 1.5px solid var(--border); border-radius: 14px; padding: 20px; box-shadow: var(--shadow-sm); }
.kn-sb-title { font-size: .72rem; font-weight: 800; letter-spacing: .1em; color: var(--text-muted); text-transform: uppercase; margin-bottom: 14px; }
.kn-sb-cta { background: var(--grad-main); border-radius: 14px; padding: 22px 20px; text-align: center; }
.kn-sb-cta h3 { font-size: .95rem; font-weight: 800; color: #fff; margin-bottom: 8px; line-height: 1.45; }
.kn-sb-cta h3::before { display: none; }
.kn-sb-cta p { font-size: .78rem; color: rgba(255,255,255,.8); margin-bottom: 14px; line-height: 1.65; font-weight: 500; }
.kn-sb-links { display: flex; flex-direction: column; gap: 0; }
.kn-sb-link { display: flex; align-items: center; gap: 8px; padding: 8px 0; font-size: .84rem; color: var(--text-mid); font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--border); transition: color .2s; }
.kn-sb-link:last-child { border: none; }
.kn-sb-link:hover { color: var(--blue); }
.kn-sb-link::before { content: '→'; color: var(--blue); font-size: .78rem; font-weight: 900; flex-shrink: 0; }

/* ===== KNOWLEDGE TOP PAGE ===== */
.kn-top-hero { background: linear-gradient(135deg,#0F172A 0%,#1E3A5F 50%,#1a1d2e 100%); padding: 88px 0 72px; position: relative; overflow: hidden; }
.kn-top-hero::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.04) 1px,transparent 1px); background-size: 32px 32px; }
.kn-top-hero-in { position: relative; z-index: 1; max-width: 1160px; margin: 0 auto; padding: 0 48px; text-align: center; }
.kn-top-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); border-radius: 999px; padding: 6px 18px; font-size: .75rem; font-weight: 700; color: rgba(255,255,255,.85); letter-spacing: .06em; margin-bottom: 20px; }
.kn-top-title { font-family: 'Zen Kaku Gothic New',sans-serif; font-size: clamp(28px,4.5vw,52px); font-weight: 900; color: #fff; line-height: 1.25; letter-spacing: -.03em; margin-bottom: 16px; }
.kn-top-desc { font-size: 1.02rem; color: rgba(255,255,255,.75); line-height: 1.85; max-width: 560px; margin: 0 auto 36px; font-weight: 500; }
.kn-top-tags { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.kn-top-tag { display: inline-flex; align-items: center; gap: 5px; padding: 5px 14px; border-radius: 999px; font-size: .78rem; font-weight: 700; background: rgba(255,255,255,.12); border: 1.5px solid rgba(255,255,255,.25); color: rgba(255,255,255,.9); }

/* ===== CATEGORY CARDS (Knowledge TOP) ===== */
.kn-cat-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; margin-top: 48px; }
.kn-cat-card { background: #fff; border: 1.5px solid var(--border); border-radius: 18px; padding: 30px; box-shadow: var(--shadow-md); transition: all .3s; text-decoration: none; color: inherit; position: relative; overflow: hidden; display: block; }
.kn-cat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--grad-main); opacity: 0; transition: opacity .3s; }
.kn-cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--border-blue); }
.kn-cat-card:hover::before { opacity: 1; }
.kn-cat-icon { font-size: 2rem; margin-bottom: 14px; display: block; }
.kn-cat-name { font-size: 1.08rem; font-weight: 900; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
.kn-cat-desc { font-size: .87rem; color: var(--text-mid); line-height: 1.8; margin-bottom: 16px; font-weight: 500; }
.kn-cat-issues { list-style: none; display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.kn-cat-issues li { display: flex; align-items: center; gap: 7px; font-size: .82rem; color: var(--text-muted); font-weight: 600; }
.kn-cat-issues li::before { content: '●'; color: var(--blue); font-size: .5rem; }
.kn-cat-more { display: inline-flex; align-items: center; gap: 5px; font-size: .82rem; font-weight: 800; color: var(--blue-dark); }
.kn-cat-more::after { content: '→'; font-weight: 900; transition: transform .2s; }
.kn-cat-card:hover .kn-cat-more::after { transform: translateX(4px); }

/* ===== LATEST ARTICLES LIST ===== */
.kn-latest-list { display: flex; flex-direction: column; gap: 0; }
.kn-latest-item { display: flex; align-items: center; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--border); text-decoration: none; color: inherit; transition: all .2s; }
.kn-latest-item:first-child { padding-top: 0; }
.kn-latest-item:last-child { border: none; }
.kn-latest-item:hover .kn-latest-title { color: var(--blue); }
.kn-latest-thumb { width: 88px; aspect-ratio: 16 / 9; height: auto; border-radius: 8px; background: var(--bg-soft); overflow: hidden; flex-shrink: 0; border: 1px solid var(--border); }
.kn-latest-thumb img { width: 100%; height: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: center; display: block; }
.kn-latest-ph { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--blue-light),#F5F3FF); font-size: 1.1rem; }
.kn-latest-body { flex: 1; min-width: 0; }
.kn-latest-cat { font-size: .68rem; font-weight: 800; letter-spacing: .07em; color: var(--blue-dark); text-transform: uppercase; margin-bottom: 4px; }
.kn-latest-title { font-size: .9rem; font-weight: 800; color: var(--text); line-height: 1.5; transition: color .2s; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.kn-latest-date { font-size: .72rem; color: var(--text-muted); margin-top: 4px; font-weight: 500; }

/* ===== CATEGORY PAGE HERO ===== */
.kn-cat-hero { background: linear-gradient(135deg,var(--blue-light) 0%,#F5F3FF 100%); border-bottom: 1.5px solid var(--border); padding: 56px 0 48px; }
.kn-cat-hero-in { max-width: 1160px; margin: 0 auto; padding: 0 48px; }
.kn-cat-hero-icon { font-size: 2.4rem; margin-bottom: 14px; display: block; }
.kn-cat-hero-title { font-family: 'Zen Kaku Gothic New',sans-serif; font-size: clamp(22px,3.5vw,36px); font-weight: 900; color: var(--text); line-height: 1.35; letter-spacing: -.025em; margin-bottom: 14px; }
.kn-cat-hero-desc { font-size: .97rem; color: var(--text-mid); line-height: 1.9; max-width: 600px; font-weight: 500; }
.kn-cat-issues-box { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }
.kn-cat-issue-chip { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; background: #fff; border: 1.5px solid var(--border); border-radius: 10px; font-size: .82rem; font-weight: 700; color: var(--text); box-shadow: var(--shadow-sm); }
.kn-cat-issue-chip span { color: var(--coral); }

/* ===== ARTICLE LIST (Category Page) ===== */
.kn-article-list { display: flex; flex-direction: column; gap: 20px; margin-top: 32px; }
.kn-article-row { display: flex; align-items: flex-start; gap: 20px; background: #fff; border: 1.5px solid var(--border); border-radius: 16px; padding: 20px; box-shadow: var(--shadow-sm); transition: all .25s; text-decoration: none; color: inherit; }
.kn-row-thumb { width: 220px; aspect-ratio: 16 / 9; height: auto; border-radius: 10px; overflow: hidden; flex-shrink: 0; background: var(--bg-soft); border: 1px solid var(--border); }
.kn-row-thumb img { width: 100%; height: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: center; display: block; image-rendering: -webkit-optimize-contrast; image-rendering: high-quality; transform: translateZ(0); -webkit-backface-visibility: hidden; }
.kn-row-ph { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--blue-light),#F5F3FF); font-size: 1.8rem; }
.kn-row-body { flex: 1; min-width: 0; }
.kn-row-cat { font-size: .68rem; font-weight: 800; letter-spacing: .07em; color: var(--blue-dark); text-transform: uppercase; margin-bottom: 6px; }
.kn-row-title { font-size: .98rem; font-weight: 800; color: var(--text); line-height: 1.5; margin-bottom: 8px; }
.kn-row-desc { font-size: .84rem; color: var(--text-muted); line-height: 1.65; font-weight: 500; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.kn-row-meta { display: flex; align-items: center; gap: 10px; margin-top: 10px; }

/* ===== IMG PLACEHOLDER ===== */
.kn-img-placeholder { width: 100%; aspect-ratio: 16/9; background: linear-gradient(135deg,var(--blue-light) 0%,#F5F3FF 100%); border-radius: 12px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; border: 2px dashed var(--border-blue); font-size: 2rem; color: var(--text-muted); }
.kn-img-placeholder p { font-size: .78rem; color: var(--text-muted); font-weight: 700; margin: 0; }

/* ===== FEATURE CHIPS ===== */
.kn-feature-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 24px; }
.kn-feature-chip { display: inline-flex; align-items: center; gap: 5px; padding: 6px 14px; border-radius: 10px; font-size: .82rem; font-weight: 700; background: var(--blue-light); color: var(--blue-dark); border: 1.5px solid var(--border-blue); }

/* ===== ABOUT PAGE ===== */
.kn-about-hero { background: linear-gradient(135deg,#0F172A 0%,#1a1d2e 100%); padding: 80px 0 72px; position: relative; overflow: hidden; }
.kn-about-hero::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.04) 1px,transparent 1px); background-size: 32px 32px; }
.kn-about-hero-in { position: relative; z-index: 1; max-width: 1160px; margin: 0 auto; padding: 0 48px; }
.kn-about-h1 { font-family: 'Zen Kaku Gothic New',sans-serif; font-size: clamp(26px,4vw,48px); font-weight: 900; color: #fff; line-height: 1.3; letter-spacing: -.03em; margin-bottom: 16px; }
.kn-about-sub { font-size: 1rem; color: rgba(255,255,255,.75); line-height: 1.85; max-width: 580px; font-weight: 500; margin-bottom: 32px; }
.kn-feature-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 48px; }
.kn-feature-item { background: #fff; border: 1.5px solid var(--border); border-radius: 16px; padding: 24px 20px; box-shadow: var(--shadow-sm); transition: all .3s; text-align: center; }
.kn-feature-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.kn-feature-item-icon { font-size: 1.8rem; margin-bottom: 12px; display: block; }
.kn-feature-item-name { font-size: .88rem; font-weight: 800; color: var(--text); line-height: 1.45; }

/* ===== RESPONSIVE ===== */
@media (max-width:1024px) {
  .kn-layout { grid-template-columns: 1fr; padding: 48px 40px 72px; gap: 40px; }
  .kn-sidebar { position: static; }
  .kn-card-grid { grid-template-columns: repeat(2,1fr); }
  .kn-feature-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width:768px) {
  .kn-breadcrumb-in { padding: 10px 20px; }
  .kn-layout { padding: 32px 20px 56px; }
  .kn-top-hero-in,.kn-cat-hero-in,.kn-about-hero-in { padding: 0 20px; }
  .kn-cat-hero { padding: 40px 0 36px; }
  .kn-top-hero { padding: 72px 0 56px; }
  .kn-about-hero { padding: 60px 0 52px; }
  .kn-hero img { height: 220px; }
  .kn-h1,.kn-about-h1 { font-size: clamp(20px,6vw,28px); }
  .kn-lead { font-size: .95rem; margin-bottom: 28px; padding-bottom: 28px; }
  .kn-article h2,.kn-h2 { font-size: clamp(17px,5vw,21px); margin: 40px 0 16px; padding: 14px 16px 14px 18px; }
  .kn-article h3,.kn-h3 { font-size: clamp(15px,4.5vw,18px); margin: 30px 0 12px; }
  .kn-cat-grid { grid-template-columns: 1fr; gap: 16px; }
  .kn-card-grid { grid-template-columns: 1fr; }
  .kn-point-grid { grid-template-columns: 1fr; }
  .kn-feature-grid { grid-template-columns: repeat(2,1fr); gap: 12px; }
  .kn-article-row { flex-direction: column; }
  .kn-row-thumb { width: 100%; aspect-ratio: 16 / 9; height: auto; }
  .kn-toc { padding: 18px 20px; }
  .kn-toc a { font-size: .84rem; }
  .kn-cta { padding: 28px 22px; border-radius: 14px; }
  .kn-cta-btns { flex-direction: column; }
  .kn-flow-item { max-width: 100%; }
  .kn-latest-item { gap: 12px; }
  .kn-latest-thumb { width: 72px; aspect-ratio: 16 / 9; height: auto; }
  .kn-summary { padding: 22px 20px; }
  .kn-callout { padding: 14px 16px; }
  .kn-checklist { padding: 16px 18px; }
  .kn-point-card { padding: 20px; }
  .about-grid-4 { grid-template-columns: 1fr; gap: 16px; }
  .about-cta-outer { padding: 48px 20px !important; }
}

.about-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 960px) {
  .about-grid-4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}