:root{
  --main:#009490;--main-soft:#dff1f0;--main-deep:#007e7a;
  --accent:#ea6e8e;--accent-soft:#fbe5eb;
  --bg1:#f2f7f5;
  --ink:#2b3636;--gray:#67797a;--line:#e6ece9
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;color:var(--ink);background:#ffffff;line-height:1.9;font-feature-settings:"palt";-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* NAV */
.nav{position:sticky;top:0;background:#ffffff;z-index:100;transition:box-shadow .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.scrolled{box-shadow:0 4px 18px -8px rgba(20,40,40,.18);border-bottom-color:var(--line)}
.nav-in{max-width:1280px;margin:0 auto;padding:18px 32px;display:flex;justify-content:space-between;align-items:center;gap:32px}
.logo img{height:52px}
.nav-r{display:flex;align-items:center;gap:36px;margin-left:auto}
.menu{display:flex;gap:36px;font-size:14px;font-weight:600;letter-spacing:.03em}
.menu a{position:relative;padding:6px 0 8px}
.menu a::before{content:"";position:absolute;left:0;right:0;bottom:0;height:1.5px;background:var(--main);opacity:.45}
.menu a:hover{color:var(--main)}
.menu a.current{color:var(--main)}
.menu a.current::before{opacity:1}
.cta-nav{background:var(--main);color:#fff;padding:13px 28px;border-radius:999px;font-size:12.5px;font-weight:700;box-shadow:0 6px 16px -8px rgba(0,148,144,.45)}

.crumb{max-width:1280px;margin:0 auto;padding:18px 32px 0;font-size:11.5px;color:var(--gray)}
.crumb span{margin:0 8px;opacity:.5}

.page-strip{padding:24px 32px 14px;background:#fff;text-align:center}
.page-strip p.tag{font-size:12px;color:var(--accent);letter-spacing:.2em;font-weight:800;margin-bottom:12px}
.page-strip h1{font-size:clamp(32px,4.2vw,52px);font-weight:900;letter-spacing:.01em}
.page-strip h1 em{font-style:normal;color:var(--main)}

/* KPI ヒーロー（コンテンツ列内に配置） */
.kpi-hero{margin:8px 0 24px}
.kpi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;background:var(--main-soft);border:1px solid var(--line);border-radius:14px;padding:24px}
.kpi-card{text-align:center}
.kpi-num{font-size:clamp(28px,3.4vw,42px);font-weight:900;color:var(--main);line-height:1.1;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:.01em}
.kpi-num em{font-style:normal;font-size:.55em;color:var(--main-deep);margin-left:4px;font-weight:700}
.kpi-label{font-size:11.5px;color:var(--gray);margin-top:6px;letter-spacing:.04em;font-weight:600}
.kpi-card.accent .kpi-num{color:var(--accent)}

.b-wrap{display:grid;grid-template-columns:220px 1fr;max-width:1280px;margin:0 auto;padding:8px 32px 0;gap:64px;position:relative}
.b-toc{position:sticky;top:96px;height:fit-content;align-self:start;padding:16px 0}
.b-toc-label{font-size:10px;color:var(--gray);letter-spacing:.2em;font-weight:800;margin-bottom:18px}
.b-toc ul{list-style:none;padding-left:0;border-left:1px solid var(--line)}
.b-toc li{position:relative}
.b-toc li a{display:block;padding:11px 0 11px 20px;font-size:12.5px;color:var(--gray);font-weight:600;letter-spacing:.03em;border-left:2px solid transparent;margin-left:-1px;transition:color .25s,border-color .25s,padding-left .25s}
.b-toc li a:hover,.b-toc li a.active{color:var(--main);border-left-color:var(--main);padding-left:28px}

.b-content{padding:16px 0 80px}
.b-sec{padding:48px 0;border-bottom:1px solid var(--line)}
.b-sec:last-child{border-bottom:none}
.b-sec-head{margin-bottom:24px}
.b-sec-en{font-size:11px;color:var(--accent);letter-spacing:.2em;font-weight:800;margin-bottom:8px}
.b-sec h2{font-size:clamp(26px,3.2vw,36px);font-weight:800;letter-spacing:.01em}
.b-sec h2 em{font-style:normal;color:var(--main)}
.b-sec p.body{font-size:13.5px;color:var(--gray);line-height:1.95;margin-bottom:16px}
.b-sec .source{font-size:10.5px;color:var(--gray);line-height:1.7;margin-top:12px}

/* Chart 共通 */
.chart-block{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 32px 32px;margin-top:24px;position:relative}
.chart-block-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.chart-block h3{font-size:17px;font-weight:800;color:var(--ink);margin:0}
.chart-block .sub{font-size:12px;color:var(--gray);margin:2px 0 0}
.chart-svg{width:100%;height:auto;display:block;max-width:100%;margin:0}
.chart-legend{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin:-8px 0 0;font-size:11.5px;color:var(--gray)}
.chart-block-head .chart-legend{margin:0;justify-content:flex-end}
.donut-wrap{display:flex;flex-direction:column;align-items:center;gap:20px}
.donut-svg{max-width:440px;width:100%;margin:0 auto}
.donut-legend{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;gap:24px 40px;width:100%}
.donut-legend-item{display:flex;align-items:flex-start;gap:12px}
.donut-legend-swatch{flex-shrink:0;width:16px;height:16px;border-radius:3px;margin-top:3px}
.donut-legend-name{font-size:14px;font-weight:800;color:var(--ink)}
.donut-legend-desc{font-size:11.5px;color:var(--gray);margin-top:4px;line-height:1.6}
@media(max-width:640px){
  .donut-legend{flex-direction:row;justify-content:center;gap:12px 24px;margin-top:-4px}
  .donut-svg{max-width:250px}
  .donut-wrap{gap:20px;padding:0 40px}
}
.chart-legend span{display:inline-flex;align-items:center;gap:6px}
.chart-legend i{display:inline-block;width:10px;height:10px;border-radius:2px}

/* 2列レイアウト */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
@media(max-width:840px){.two-col{grid-template-columns:1fr}}

/* 数値カード */
.numcard{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;position:relative;overflow:hidden}
.numcard::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:var(--main)}
.numcard.accent::before{background:var(--accent)}
.numcard h4{font-size:12px;color:var(--gray);font-weight:700;letter-spacing:.05em;margin-bottom:10px}
.numcard .big{font-size:36px;font-weight:900;color:var(--main);line-height:1;font-family:Helvetica,Arial,sans-serif}
.numcard.accent .big{color:var(--accent)}
.numcard .big em{font-style:normal;font-size:.5em;color:var(--gray);margin-left:6px;font-weight:700}
.numcard p.note{font-size:12px;color:var(--gray);line-height:1.7;margin-top:10px}

/* テックスタック */
.tech-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:18px}
@media(max-width:840px){.tech-grid{grid-template-columns:1fr}}
.tech-row{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 20px}
.tech-row h4{font-size:11px;color:var(--accent);font-weight:800;letter-spacing:.15em;margin-bottom:8px}
.tech-row .chips{display:flex;flex-wrap:wrap;gap:6px}
.tech-row .chip{display:inline-block;background:var(--main-soft);color:var(--main-deep);padding:4px 10px;border-radius:999px;font-size:11.5px;font-weight:600}

/* 表彰バッジ */
.award-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
@media(max-width:840px){.award-list{grid-template-columns:1fr}}
.award{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 22px;display:flex;gap:16px;align-items:flex-start}
.award-mark{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--main),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:12px;letter-spacing:-.02em;flex-shrink:0;padding:4px;box-sizing:border-box;text-align:center;line-height:1}
.award:nth-child(1) .award-mark,
.award:nth-child(4) .award-mark{font-size:20px;padding:0}
.award h4{font-size:14px;font-weight:800;margin-bottom:4px}
.award p{font-size:12px;color:var(--gray);line-height:1.7}

/* CTA */
.b-cta{background:var(--main);color:#fff;padding:40px 32px;text-align:center;margin-top:60px}
.b-cta h3{font-size:20px;font-weight:800;margin-bottom:8px}
.b-cta p{opacity:.9;font-size:13px;margin-bottom:18px}
.b-cta a{display:inline-block;background:#fff;color:var(--main);padding:12px 32px;border-radius:999px;font-weight:700;font-size:13px}

/* Footer */
footer{background:#ffffff;color:var(--ink);padding:60px 32px 28px;border-top:4px solid var(--main);position:relative}
footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,var(--main),var(--accent));opacity:.85}
.f-in{max-width:1280px;margin:0 auto 36px;display:grid;grid-template-columns:1.2fr 2fr;gap:64px;align-items:start}
.f-l img{height:36px;margin-bottom:18px}
.f-d{font-size:12.5px;color:var(--gray);line-height:1.85}
.f-links-wrap{display:flex;flex-direction:column;gap:18px}
.f-links-label{font-size:10.5px;color:var(--main);font-weight:800;letter-spacing:.2em}
.f-links{display:flex;flex-wrap:wrap;gap:14px 28px}
.f-links a{font-size:12.5px;color:var(--ink);font-weight:600}
.f-links a:hover{color:var(--main)}
.cp{max-width:1280px;margin:0 auto;border-top:1px solid var(--line);padding-top:20px;text-align:center;font-size:10.5px;color:var(--gray);letter-spacing:.08em}

.to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:var(--main);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px -6px rgba(0,148,144,.4);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .3s,visibility .3s,transform .3s,background .25s;z-index:200;font-size:0}
.to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--main-deep);transform:translateY(-2px)}
.to-top svg{width:18px;height:18px;stroke:#fff;stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round}

@media(max-width:840px){
  .to-top{display:none!important}
  .b-wrap{grid-template-columns:1fr;padding:0 12px;gap:20px}
  .chart-block{padding:14px 4px 16px;margin-top:12px}
  .chart-block h3{font-size:14px;padding:0 8px}
  .chart-svg{max-width:100%;margin:0;width:calc(100% + 8px);margin-left:-4px}
  .b-sec .source{text-align:right;padding:0 8px;font-size:10px}
  .chart-legend{padding:0 8px}
  .b-toc{position:static;padding:0;border-bottom:1px solid var(--line)}
  .b-toc-label{margin:0;padding:14px 4px;font-size:11px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;background:var(--bg1);border-radius:4px;padding-left:14px;padding-right:14px}
  .b-toc-label::after{content:"▼";font-size:10px;color:var(--main);transition:transform .25s}
  .b-toc[aria-expanded="false"] .b-toc-label::after{transform:rotate(-90deg)}
  .b-toc[aria-expanded="false"] ul{max-height:0;overflow:hidden;border-left:none;opacity:0;padding:0;margin:0}
  .b-toc ul{transition:max-height .3s ease,opacity .25s,padding .25s;max-height:500px;opacity:1;margin-top:8px}
  .b-toc li a{padding:13px 0 13px 18px;font-size:13px}
  .kpi-grid{grid-template-columns:repeat(3,1fr);gap:8px;padding:14px 10px}
  .kpi-card{padding:2px 0}
  .kpi-num{font-size:clamp(16px,4.4vw,22px);line-height:1.2}
  .kpi-num em{font-size:.6em;margin-left:2px;display:inline}
  .kpi-label{font-size:9.5px;margin-top:4px;line-height:1.4;white-space:normal}
  .menu{display:none}
  .f-in{grid-template-columns:1fr;gap:32px}
}

/* Responsive: hamburger menu */
.menu-toggle{display:none}
@media(max-width:840px){
  .nav-in{flex-wrap:wrap}
  .menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;background:none;border:none;cursor:pointer;padding:0;margin-left:auto}
  .menu-toggle span{display:block;width:24px;height:2px;background:var(--ink);transition:transform .3s,opacity .3s}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-r{display:none;width:100%;flex-direction:column;gap:0;align-items:stretch;padding:12px 0 4px;border-top:1px solid var(--line);margin-top:14px;margin-left:0}
  .nav-r.open{display:flex}
  .menu{display:flex;flex-direction:column;gap:0;width:100%}
  .menu a{padding:14px 0;border-bottom:1px solid var(--line)}
  .menu a::before{display:none}
  .cta-nav{margin-top:12px;text-align:center;padding:13px 20px;align-self:stretch}
}

.menu-top-mobile{display:none}
@media(max-width:840px){.menu-top-mobile{display:block;color:var(--main)!important;font-weight:800;background:var(--main-soft,#dff1f0);padding:14px 16px!important;margin:-12px -12px 4px;border-radius:4px}.menu-top-mobile::before{display:none!important}}