/* 筑駒社会データラボの受け皿ページ専用。
   トップの index.html はスタイルを内包しているため、こちらは単体で完結させている。 */

:root{
  --ink:#17222b;--muted:#66737d;--navy:#102b3f;--blue:#1f5c78;--cyan:#37a7bd;
  --sky:#dff5f8;--paper:#f7f5ef;--line:#d9e0e2;--white:#fff;--gold:#b98335;
  --soft:#eef3f4;--shadow:0 16px 45px rgba(16,43,63,.08);--radius:18px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);line-height:1.85;background:#fff;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic",Meiryo,sans-serif}
a{color:inherit}
.wrap{width:min(1120px,calc(100% - 40px));margin:auto}
.skip{position:fixed;left:-9999px;top:8px;z-index:100;background:#fff;padding:8px 14px}
.skip:focus{left:8px}

.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);
  backdrop-filter:blur(10px);border-bottom:1px solid rgba(16,43,63,.09)}
.header-inner{width:min(1180px,calc(100% - 32px));margin:auto;height:64px;display:flex;
  align-items:center;justify-content:space-between;gap:20px}
.brand{text-decoration:none;font-weight:800;font-size:18px;letter-spacing:.02em}
.brand span{color:#d78b2b}
.brand-sub{font-size:12px;font-weight:700;color:#5b6d77;letter-spacing:0}
.site-header nav{display:flex;gap:6px}
.site-header nav a{text-decoration:none;font-size:13px;font-weight:700;color:#41515c;padding:8px 12px;border-radius:999px}
.site-header nav a:hover{background:#eef5f6}

.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;
  border-radius:999px;padding:12px 20px;font-weight:800;font-size:14px;border:1px solid transparent;cursor:pointer}
.btn.primary{background:#f2c267;color:#1e2b32;box-shadow:0 8px 24px rgba(0,0,0,.13)}
.btn.outline{border-color:#aac6d0;background:transparent;color:var(--navy)}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px}
.crumbs a{color:rgba(255,255,255,.86);text-decoration:none;border-bottom:1px solid rgba(255,255,255,.3)}
.crumbs a:hover{color:#fff;border-bottom-color:#fff}
.crumbs i{font-style:normal;opacity:.45}
.crumbs [aria-current]{color:#fff;font-weight:600}

.page-hero{background:linear-gradient(160deg,var(--navy),var(--blue));color:#fff;padding:34px 0 46px}
.page-hero .eyebrow{letter-spacing:.16em;font-size:12px;font-weight:850;color:#68c6d7;margin:0 0 10px}
.page-hero h1{color:#fff;font-size:clamp(26px,4.2vw,42px);line-height:1.28;letter-spacing:-.025em;margin:0 0 16px}
.page-hero .lead{color:rgba(255,255,255,.9);font-size:16px;line-height:1.9;max-width:70ch;margin:0 0 22px}
.page-hero .note{color:rgba(255,255,255,.62);font-size:12.5px;line-height:1.7;margin:18px 0 0;max-width:70ch}

.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:14px 16px}
.stat strong{display:block;font:800 27px/1.15 Georgia,serif;color:#f0c267}
.stat strong small{font-size:14px;margin-left:2px}
.stat span{display:block;margin-top:6px;font-size:12px;color:rgba(255,255,255,.72)}

.page-section{padding:40px 0;border-bottom:1px solid var(--line)}
.page-section:last-of-type{border-bottom:0}
.page-section h2{font-size:clamp(19px,2.6vw,26px);margin:0 0 10px;color:var(--navy);letter-spacing:-.02em}
.page-section>.wrap>p{color:var(--muted);line-height:1.85;margin:0 0 20px;max-width:72ch}
.page-section>.wrap>p.chapter{color:#3a8396;font-size:12px;font-weight:850;letter-spacing:.16em;margin:0 0 10px}

.year-bars{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;max-width:520px}
.yb{text-align:center}
.yb-track{height:110px;display:flex;align-items:flex-end;justify-content:center;background:var(--soft);border-radius:10px;padding:6px}
.yb-track i{display:block;width:60%;min-height:3px;background:linear-gradient(180deg,var(--cyan),var(--blue));border-radius:6px}
.yb b{display:block;margin-top:7px;font-size:15px;color:var(--navy)}
.yb span{display:block;font-size:11.5px;color:var(--muted)}

.caveat{margin:18px 0 0;padding:12px 15px;border-left:3px solid var(--gold);background:#fdf6ea;
  color:#7a5518;font-size:13px;line-height:1.85;max-width:70ch;border-radius:0 8px 8px 0}

.link-block{margin-bottom:26px}
.link-block:last-child{margin-bottom:0}
.link-block h2,.link-block h3{font-size:17px;color:var(--navy);margin:0 0 6px}
.link-block>p{font-size:13px;color:var(--muted);margin:0 0 12px;line-height:1.75;max-width:72ch}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border:1px solid var(--line);
  border-radius:999px;background:var(--white);color:var(--navy);text-decoration:none;font-size:13.5px;font-weight:700;transition:.15s}
.chip b{font-size:12px;font-weight:800;color:var(--blue);background:var(--sky);border-radius:999px;padding:1px 8px}
.chip:hover{border-color:var(--cyan);box-shadow:0 6px 18px rgba(16,43,63,.09);transform:translateY(-1px)}

.q-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.q-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);padding:16px 18px}
.q-head{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:9px}
.q-head span{font-size:11.5px;border-radius:999px;padding:2px 9px;border:1px solid var(--line);color:var(--muted)}
.q-head .q-year{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:700}
.q-head .q-evidence{background:var(--sky);border-color:var(--sky);color:var(--blue)}
.q-card h3{font-size:16px;line-height:1.55;margin:0 0 7px;color:var(--ink)}
.q-summary{font-size:13.5px;line-height:1.8;color:var(--muted);margin:0 0 11px}
.q-meta{display:flex;flex-wrap:wrap;gap:6px;font-size:11.5px;color:var(--muted)}
.q-meta span{background:var(--soft);border-radius:6px;padding:2px 8px}
.q-pitfall{margin-top:11px;padding-top:10px;border-top:1px dashed var(--line);font-size:11.5px;
  display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.q-pitfall b{color:var(--gold);font-size:11px}
.q-pitfall span{background:#fdf6ea;color:#8a6222;border-radius:6px;padding:2px 8px}

.q-more{display:block;margin:18px auto 0;padding:11px 26px;border:1px solid var(--line);
  border-radius:999px;background:var(--white);color:var(--navy);font-size:13.5px;cursor:pointer}
.q-more:hover{border-color:var(--cyan);background:var(--soft)}

.struct-table{width:100%;border-collapse:collapse;font-size:14px;max-width:720px}
.struct-table th,.struct-table td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.struct-table thead th{background:var(--soft);color:var(--navy);font-size:12.5px}

.cta-block{background:var(--paper)}
.cta-block .btn{margin:4px 8px 0 0}

.back-top{display:block;text-align:center;padding:22px 16px;color:var(--blue);text-decoration:none;font-size:14px}
.back-top:hover{text-decoration:underline}

footer{padding:25px 0;background:#0b202c;color:#a9c0c7}
footer .wrap{display:flex;justify-content:space-between;gap:20px;align-items:center}
footer strong{color:#fff;margin-right:12px}
footer span,footer small{font-size:12px}
.footer-links{display:flex;flex-wrap:wrap;gap:14px}
.footer-links a{text-decoration:none;font-size:12px;border-bottom:1px solid rgba(255,255,255,.22)}
.footer-links a:hover{color:#fff;border-bottom-color:#fff}

@media(max-width:900px){.site-header nav a:nth-child(3){display:none}}
@media(max-width:640px){
  .wrap{width:min(100% - 24px,1120px)}
  .header-inner{height:56px}
  .site-header nav a{font-size:11px;padding:6px 8px}
  .q-list{grid-template-columns:1fr}
  .year-bars{gap:7px}
  .yb-track{height:84px}
  footer .wrap{display:block}
  .footer-links{margin-top:10px}
}