*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
:focus-visible{outline:3px solid currentColor;outline-offset:2px}

body{font-family:var(--ff-body);background:var(--bg);color:var(--ink);line-height:1.85;font-size:16px}
.shell{position:relative}
.page-main{max-width:var(--maxw);margin:0 auto;padding:72px 24px 84px}
.page-head{margin-bottom:44px}
.eyebrow{font-family:var(--ff-disp);letter-spacing:.24em;font-size:12px;color:var(--accent);text-transform:uppercase;margin-bottom:14px}
.page-head h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(28px,5vw,46px);line-height:1.24;letter-spacing:.01em;margin-bottom:18px}
.lead{color:var(--muted);font-size:17px;max-width:62ch}
.block{margin:0 0 52px}
.block h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(21px,3.3vw,30px);margin-bottom:18px;padding-bottom:12px;border-bottom:2px solid var(--line)}
.block p{margin-bottom:15px}
.block.has-img{display:grid;grid-template-columns:1.25fr .9fr;gap:38px;align-items:center}
.block.has-img h2{border:none;padding:0}
.block-fig img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:0 18px 40px -24px rgba(0,0,0,.4)}
@media(max-width:760px){.block.has-img{grid-template-columns:1fr;gap:22px}}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;font:inherit;font-weight:600;color:var(--ink);padding:20px 44px 20px 0;position:relative;display:block}
.faq-mark{position:absolute;right:6px;top:50%;width:14px;height:14px;transform:translateY(-50%)}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--accent);transition:.3s}
.faq-mark::before{top:6px;left:0;width:14px;height:2px}
.faq-mark::after{top:0;left:6px;width:2px;height:14px}
.faq-item.open .faq-mark::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 0 20px;color:var(--muted)}
.sitemap-page .sitemap-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.sitemap-list a{display:block;background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;transition:.25s}
.sitemap-list a:hover{transform:translateY(-3px);border-color:var(--accent)}
.sitemap-list span{display:block;font-weight:700;font-family:var(--ff-disp)}
.sitemap-list small{color:var(--muted);font-size:12px}
.site-footer{background:var(--foot-bg);color:var(--foot-fg);margin-top:72px}
.site-footer ul{list-style:none}
.site-footer a{color:inherit;opacity:.82;transition:.2s}
.site-footer a:hover{opacity:1;color:var(--accent2)}
.site-footer .ft-name{font-family:var(--ff-disp);font-weight:700}
.site-footer .ft-tag{opacity:.7;font-size:14px}
.site-footer .ft-addr{opacity:.6;font-size:13px}
.site-footer .ft-copy{font-size:12px;opacity:.55}
/* columns */
.ft-columns .ft-in{max-width:var(--maxw);margin:0 auto;padding:56px 24px 26px;display:grid;grid-template-columns:1.6fr 1fr;gap:34px}
.ft-columns .ft-name{font-size:20px;margin-bottom:8px}
.ft-columns .ft-addr{margin-top:12px}
.ft-columns .ft-nav ul{display:flex;flex-direction:column;gap:10px;font-size:14px}
.ft-columns .ft-copy{text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}
@media(max-width:760px){.ft-columns .ft-in{grid-template-columns:1fr;gap:22px}}
/* centered */
.ft-centered .ft-in{max-width:760px;margin:0 auto;padding:60px 24px 24px;text-align:center}
.ft-centered .ft-name{font-size:26px;margin-bottom:10px}
.ft-centered .ft-tag{margin-bottom:22px}
.ft-centered .ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;font-size:14px;margin-bottom:20px}
.ft-centered .ft-addr{margin-bottom:6px}
.ft-centered .ft-copy{text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}
/* split */
.ft-split .ft-in{max-width:var(--maxw);margin:0 auto;padding:64px 24px 30px;display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.ft-split .ft-brand{max-width:46%}
.ft-split .ft-name{font-size:30px;margin-bottom:10px}
.ft-split .ft-addr{margin-top:14px}
.ft-split .ft-nav ul{display:grid;grid-template-columns:1fr 1fr;gap:10px 30px;font-size:14px;text-align:right}
.ft-split .ft-copy{padding:16px 24px;border-top:1px solid rgba(255,255,255,.12);max-width:var(--maxw);margin:0 auto}
@media(max-width:760px){.ft-split .ft-brand{max-width:100%}.ft-split .ft-nav ul{text-align:left}}
/* inline */
.ft-inline{border-top:3px solid var(--accent)}
.ft-inline .ft-in{max-width:var(--maxw);margin:0 auto;padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.ft-inline .ft-name{font-size:18px}
.ft-inline .ft-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px}
/* bigtype */
.ft-bigtype .ft-in{max-width:var(--maxw);margin:0 auto;padding:64px 24px 34px}
.ft-bigtype .ft-name{font-size:clamp(38px,8vw,82px);line-height:1;letter-spacing:-.02em;margin-bottom:12px}
.ft-bigtype .ft-tag{margin-bottom:24px}
.ft-bigtype .ft-nav ul{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:14px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);margin-bottom:16px}
/* band */
.ft-band-top{background:var(--accent);color:var(--foot-bg)}
.ft-band-top p{max-width:var(--maxw);margin:0 auto;padding:20px 24px;font-family:var(--ff-disp);font-weight:700;font-size:clamp(16px,2.6vw,22px)}
.ft-band .ft-in{max-width:var(--maxw);margin:0 auto;padding:40px 24px 18px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ft-band .ft-name{font-size:20px}
.ft-band .ft-nav ul{display:flex;flex-wrap:wrap;gap:8px}
.ft-band .ft-nav a{display:inline-block;padding:7px 14px;border-radius:30px;background:rgba(255,255,255,.08);font-size:13px;opacity:1}
.ft-band .ft-nav a:hover{background:var(--accent);color:var(--foot-bg)}
.ft-band .ft-copy{text-align:center;padding:14px}
/* card */
.ft-card .ft-in{max-width:760px;margin:0 auto;padding:54px 24px 18px}
.ft-card-box{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:34px 30px;text-align:center}
.ft-card .ft-name{font-size:22px;margin-bottom:8px}
.ft-card .ft-tag{margin-bottom:20px}
.ft-card .ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;font-size:14px}
.ft-card .ft-copy{text-align:center;padding:16px}
/* stack2 */
.ft-stack2 .ft-row{border-bottom:1px solid rgba(255,255,255,.12)}
.ft-stack2 .ft-row ul{max-width:var(--maxw);margin:0 auto;padding:26px 24px;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;font-size:14.5px}
.ft-stack2 .ft-in{max-width:var(--maxw);margin:0 auto;padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.ft-stack2 .ft-name{font-size:18px}
/* rail */
.ft-rail .ft-in{max-width:var(--maxw);margin:0 auto;padding:0;display:grid;grid-template-columns:300px 1fr}
.ft-rail .ft-rail-brand{background:rgba(255,255,255,.05);border-right:3px solid var(--accent);padding:46px 30px}
.ft-rail .ft-name{font-size:22px;margin-bottom:10px}
.ft-rail .ft-addr{margin-top:14px}
.ft-rail .ft-nav{padding:46px 30px;display:flex;align-items:center}
.ft-rail .ft-nav ul{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px;font-size:14.5px}
.ft-rail .ft-copy{text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}
@media(max-width:760px){.ft-rail .ft-in{grid-template-columns:1fr}.ft-rail .ft-rail-brand{border-right:none;border-bottom:3px solid var(--accent)}}
/* chips */
.ft-chips .ft-in{max-width:820px;margin:0 auto;padding:56px 24px 20px;text-align:center}
.ft-chips .ft-name{font-size:22px;margin-bottom:18px}
.ft-chips .ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:18px}
.ft-chips .ft-nav a{display:inline-block;padding:8px 16px;border:1px solid rgba(255,255,255,.22);border-radius:30px;font-size:13px;opacity:1}
.ft-chips .ft-nav a:hover{border-color:var(--accent);background:var(--accent);color:var(--foot-bg)}
.ft-chips .ft-addr{font-size:13px}
.ft-chips .ft-copy{text-align:center;padding:16px}
.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;opacity:0;pointer-events:none;transform:translateY(12px);transition:.3s;z-index:60;box-shadow:0 8px 20px -8px rgba(0,0,0,.5)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.burger{display:none;width:42px;height:42px;background:none;border:none;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:8px}
.burger span{display:block;height:2px;background:currentColor;transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{display:none}


:root{
  --bg:#f5f6fa;--ink:#1c2333;--accent:#5b6ee0;--accent2:#1bb89a;--soft:#ffffff;
  --line:#e4e7f0;--muted:#5f6678;--foot-bg:#1c2333;--foot-fg:#eef0f8;
  --ff-disp:'Zen Maru Gothic',sans-serif;--ff-body:'Noto Sans JP',sans-serif;
  --maxw:1140px;--radius:18px;
}
.hdr{position:fixed;top:0;left:0;right:0;background:rgba(245,246,250,.96);z-index:80;transition:.3s;border-bottom:1px solid transparent}
.hdr.shrunk{box-shadow:0 6px 20px -14px rgba(0,0,0,.4);border-color:var(--line)}
.hdr-inner{max-width:var(--maxw);margin:0 auto;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;transition:.3s}
.hdr.shrunk .hdr-inner{padding:12px 24px}
.logo{font-family:var(--ff-disp);font-weight:700;font-size:24px;color:var(--accent2);transition:.3s}
.hdr.shrunk .logo{font-size:20px}
.gnav ul{display:flex;gap:26px}
.gnav a{font-weight:500;font-size:15px;position:relative;padding:4px 0}
.gnav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);transition:.3s}
.gnav a:hover::after,.gnav a.is-active::after{width:100%}
.shell{padding-top:78px}
.hero{position:relative;max-width:var(--maxw);margin:24px auto 0;padding:0 24px}
.hero-card{position:relative;border-radius:30px;overflow:hidden;min-height:62vh;display:flex;align-items:flex-end}
.hero-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-card .veil{position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(22,32,46,.78))}
.hero-body{position:relative;color:#fff;padding:6vw 5vw}
.hero-tag{display:inline-block;background:var(--accent);padding:6px 16px;border-radius:30px;font-size:13px;font-weight:700;margin-bottom:16px}
.hero-body h1{font-family:var(--ff-disp);font-size:clamp(28px,5vw,50px);line-height:1.35;margin-bottom:14px}
.hero-body p{max-width:42ch;opacity:.95}
.feed{max-width:var(--maxw);margin:0 auto;padding:80px 24px}
.feed h2{font-family:var(--ff-disp);font-size:30px;margin-bottom:8px;color:var(--accent2)}
.feed .sub{color:var(--muted);margin-bottom:34px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{background:var(--soft);border-radius:var(--radius);overflow:hidden;box-shadow:0 16px 40px -30px rgba(0,0,0,.5);transition:.3s}
.card:hover{transform:translateY(-6px)}
.card img{aspect-ratio:3/2;object-fit:cover}
.card-b{padding:22px}
.card-b .cat{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.08em}
.card-b h3{font-family:var(--ff-disp);font-size:19px;margin:8px 0 8px}
.card-b p{color:var(--muted);font-size:14px}
@media(max-width:880px){.gnav{display:none}.burger{display:flex;color:var(--ink)}.drawer.open{display:block;background:var(--bg);border-top:1px solid var(--line)}.drawer.open ul{flex-direction:column;padding:14px 24px}.drawer.open li{padding:10px 0}.cards{grid-template-columns:1fr}}

/* ===== article-body additions (通知管理ナビ) ===== */
.intro{font-size:17px;color:var(--ink);max-width:64ch;margin:0 0 40px;line-height:1.95}
.block h3{font-family:var(--ff-disp);font-weight:700;font-size:18px;margin:26px 0 10px}
.block ul.dot{margin:6px 0 18px;padding-left:0}
.block ul.dot li{position:relative;padding-left:22px;margin-bottom:8px;color:var(--ink)}
.block ul.dot li::before{content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:50%;background:var(--accent2)}
.block.has-img.flip{grid-template-columns:.9fr 1.25fr}
.block.has-img.flip .block-fig{order:-1}
@media(max-width:760px){.block.has-img.flip .block-fig{order:0}}
.callout{background:linear-gradient(135deg,rgba(91,110,224,.08),rgba(27,184,154,.08));border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius);padding:22px 24px;margin:0 0 40px}
.callout strong{font-family:var(--ff-disp);color:var(--accent)}
.callout p{margin:0;color:var(--ink)}
/* in-page step nav */
.toc{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;margin:0 0 48px}
.toc p.toc-h{font-family:var(--ff-disp);font-weight:700;font-size:15px;margin-bottom:14px;color:var(--accent2)}
.toc ol{counter-reset:t;display:grid;gap:10px}
.toc ol li{counter-increment:t;position:relative;padding-left:38px}
.toc ol li::before{content:counter(t,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--ff-disp);font-weight:700;font-size:13px;color:var(--accent);background:rgba(91,110,224,.1);width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.toc ol li a{font-weight:500}
.toc ol li a:hover{color:var(--accent)}
/* series cards on top page */
.steps-row{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:34px}
.step-chip{display:block;background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:18px 16px;transition:.25s}
.step-chip:hover{transform:translateY(-4px);border-color:var(--accent)}
.step-chip .n{font-family:var(--ff-disp);font-weight:700;font-size:13px;color:var(--accent);letter-spacing:.1em}
.step-chip h3{font-family:var(--ff-disp);font-size:16px;margin:8px 0 6px}
.step-chip p{color:var(--muted);font-size:13px;line-height:1.7}
@media(max-width:880px){.steps-row{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.steps-row{grid-template-columns:1fr}}
/* prev/next pager */
.pager{display:flex;justify-content:space-between;gap:16px;margin-top:56px;border-top:1px solid var(--line);padding-top:28px;flex-wrap:wrap}
.pager a{font-weight:600;color:var(--accent);font-size:14.5px}
.pager a:hover{text-decoration:underline}
.pager .nx{margin-left:auto;text-align:right}
.sitemap-list small{line-height:1.6;display:block;margin-top:6px}
.sitemap-list .sm-desc{display:block;color:var(--muted);font-size:13px;margin-top:8px;font-weight:400;font-family:var(--ff-body)}

/* fallback: show reveal content when JS/observer unavailable */
.no-js .reveal{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none}}