:root{color-scheme:light;--ink:#21282f;--muted:#65717a;--blue:#2a52be;--cream:#f8f7f3;--line:#e5e8e8;--white:#fff;--sky:#edf2ff;--dark:#162d5c;--radius:20px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--cream);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Arial,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:3px solid #8da9fc;outline-offset:3px}
.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{max-width:1152px;padding:18px 28px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)!important;text-decoration:none!important}.brand-mark{height:37px;width:37px;border-radius:11px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:21px;font-weight:850;letter-spacing:-.08em}.brand-copy{display:flex;flex-direction:column;line-height:1.22}.brand-copy b{font-size:16px;letter-spacing:.07em}.brand-copy small{font-size:10px;color:#75808b;letter-spacing:.14em;text-transform:uppercase;margin-top:4px}.header-link{font-size:13px;font-weight:650;color:var(--blue)}
.hero{background:#fff;border-bottom:1px solid var(--line)}.hero-inner{max-width:1152px;padding:76px 28px 70px;margin:auto;position:relative}.eyebrow{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.18em;color:var(--blue);display:flex;align-items:center;gap:10px}.eyebrow::before{content:"";display:block;width:24px;height:2px;background:var(--blue)}
.hero h1{font-size:clamp(36px,5.2vw,65px);line-height:1.08;letter-spacing:-.055em;font-weight:760;max-width:780px;margin:22px 0 23px}.hero-sub{color:var(--muted);font-size:17px;max-width:690px;line-height:1.65;margin:0}.meta{display:flex;gap:14px;align-items:center;margin-top:33px;color:var(--muted);font-size:12px;flex-wrap:wrap}.meta-item{border:1px solid var(--line);border-radius:30px;padding:6px 13px;background:#fff}.meta-item strong{color:var(--ink);font-weight:650}
.page{max-width:1152px;margin:0 auto;padding:42px 28px 100px;display:grid;grid-template-columns:255px minmax(0,1fr);gap:44px;align-items:start}
.nav{position:sticky;top:24px}.nav-heading{font-size:11px;text-transform:uppercase;letter-spacing:.16em;color:#81909a;font-weight:760;padding:0 13px;margin:12px 0}.nav-links{display:flex;flex-direction:column;gap:2px}.nav-links a{color:#4c5964;padding:10px 13px;border-radius:11px;font-size:13px;line-height:1.35}.nav-links a:hover{background:#eaf0fb;text-decoration:none;color:var(--blue)}.nav-extra{margin-top:26px;padding:20px 18px;background:#edf1f9;border:1px solid #dee5f4;border-radius:15px;font-size:12px;line-height:1.65;color:#536070}.nav-extra strong{display:block;color:var(--dark);font-size:13px;margin-bottom:7px}
.content{background:#fff;border-radius:23px;border:1px solid var(--line);box-shadow:0 14px 50px rgba(21,35,62,.035);padding:16px 51px 47px;min-width:0}.section{padding:36px 0 34px;border-bottom:1px solid var(--line);scroll-margin-top:22px}.section:last-child{border:none;padding-bottom:4px}.section-index{font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--blue);margin-bottom:7px}.section h2{font-size:25px;line-height:1.24;letter-spacing:-.035em;margin:0 0 17px;font-weight:730}.section p{margin:0 0 15px;color:#505e68}.section p:last-child{margin-bottom:0}.section ul{padding-left:19px;margin:14px 0;color:#505e68}.section li{padding-left:6px;margin:8px 0}.section li::marker{color:var(--blue)}.section strong{color:#28333e}.section a{overflow-wrap:anywhere}
.summary{padding:24px 28px 24px;background:#f0f4fc;border-radius:16px;border-left:3px solid var(--blue);margin-top:25px}.summary strong{font-size:15px;color:var(--dark)}.summary p{font-size:13px;margin:8px 0 0;color:#5c6a7a}
.fact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin:21px 0}.fact{border:1px solid var(--line);background:#fbfcfe;padding:17px 18px;border-radius:13px}.fact b{display:block;color:var(--ink);font-size:13px;margin-bottom:5px}.fact span{display:block;color:var(--muted);font-size:12px;line-height:1.55}
.data-table{width:100%;border-collapse:collapse;font-size:13px;margin:20px 0 10px}.data-table th{color:#586777;background:#f3f5fa;font-size:11px;letter-spacing:.05em;font-weight:720;text-align:left}.data-table th,.data-table td{padding:13px 15px;vertical-align:top;border-bottom:1px solid var(--line)}.data-table td{color:#52606a}.data-table td:first-child{font-weight:650;color:var(--ink)}.data-table th:first-child{border-radius:9px 0 0 9px}.data-table th:last-child{border-radius:0 9px 9px 0}
.notice{border:1px solid #e5d9be;background:#fcf9f1;border-radius:15px;padding:18px 20px;margin:23px 0;color:#655a43;font-size:13px;line-height:1.7}.notice b{color:#6a552e;display:block;margin-bottom:4px}.notice p{margin:0;color:#655a43}
.footer{max-width:1152px;margin:0 auto;border-top:1px solid var(--line);padding:28px 28px 46px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#88929a}.footer b{color:#53616b;letter-spacing:.1em}
@media(max-width:900px){.page{grid-template-columns:1fr;gap:17px;padding:25px 20px 65px}.nav{position:static}.nav-links{display:flex;flex-direction:row;overflow-x:auto;padding-bottom:9px;gap:4px;scrollbar-width:thin}.nav-links a{white-space:nowrap;padding:9px 12px;background:#fff;border:1px solid var(--line)}.nav-extra,.nav-heading{display:none}.hero-inner{padding:55px 24px 49px}.content{padding:0 27px 24px}.section{padding:32px 0}.header-inner{padding:17px 22px}}
@media(max-width:520px){.header-inner{padding:13px 17px}.brand-mark{width:33px;height:33px;font-size:19px}.brand-copy b{font-size:14px}.brand-copy small{font-size:9px}.header-link{font-size:12px}.hero-inner{padding:45px 20px 41px}.hero h1{font-size:37px;letter-spacing:-.05em;margin:17px 0}.hero-sub{font-size:15px}.meta{gap:7px;margin-top:25px}.meta-item{font-size:11px;padding:5px 10px}.page{padding:17px 13px 47px;gap:13px}.content{padding:0 20px 21px;border-radius:17px}.section{padding:27px 0 26px}.section h2{font-size:22px}.fact-grid{grid-template-columns:1fr;gap:8px}.fact{padding:13px 15px}.data-table{font-size:12px}.data-table td,.data-table th{padding:10px 8px}.summary{padding:18px 19px}.notice{padding:15px}.footer{padding:21px 20px 32px;flex-direction:column;gap:5px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}


/* Mobile-first reading improvements; desktop sidebar stays unchanged. */
.mobile-toc{display:none}
html,body{max-width:100%;overflow-x:clip}
body{-webkit-text-size-adjust:100%;text-size-adjust:100%}
.content,.section,.fact,.summary,.notice,.page,.hero-inner{min-width:0}
.content p,.content li,.content td,.content .fact span{overflow-wrap:anywhere}
@media(max-width:900px){
  .page{display:block;max-width:740px;padding:20px 18px 64px}
  .nav{display:none}
  .mobile-toc{display:block;background:white;border:1px solid var(--line);border-radius:15px;margin:0 0 16px;overflow:hidden}
  .mobile-toc summary{display:flex;align-items:center;justify-content:space-between;gap:14px;cursor:pointer;list-style:none;padding:15px 18px;color:var(--dark);font-weight:720;font-size:14px}
  .mobile-toc summary::-webkit-details-marker{display:none}
  .mobile-toc summary span{font-size:21px;font-weight:400;transition:transform .15s}
  .mobile-toc[open] summary span{transform:rotate(180deg)}
  .mobile-toc nav{border-top:1px solid var(--line);padding:8px 12px 12px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 8px}
  .mobile-toc nav a{padding:10px 8px;line-height:1.35;font-size:13px;color:#445467;border-radius:8px}
  .mobile-toc nav a:active{background:var(--sky)}
  .section{scroll-margin-top:16px}
  .content{padding:0 32px 24px}
  .fact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:600px){
  .site-header,.hero{width:100%}
  .header-inner{padding:13px 18px;gap:8px}
  .brand{gap:8px;min-width:0}
  .header-link{font-size:12px;white-space:nowrap}
  .brand-copy small{max-width:150px}
  .hero-inner{padding:40px 20px 36px}
  .hero h1{font-size:clamp(30px,9.1vw,39px);line-height:1.12;letter-spacing:-.048em;overflow-wrap:break-word}
  .hero-sub{font-size:15px;line-height:1.65}
  .meta{gap:7px}
  .meta-item{white-space:normal;max-width:100%}
  .page{padding:14px 0 38px}
  .mobile-toc{margin:0 15px 13px;border-radius:12px}
  .mobile-toc nav{grid-template-columns:1fr;gap:0;padding:5px 12px 10px}
  .mobile-toc nav a{padding:9px 8px}
  .content{border:0;box-shadow:none;border-radius:0;padding:0 20px 18px}
  .section{padding:29px 0 27px}
  .section h2{font-size:22px;line-height:1.25;margin-bottom:15px}
  .section p,.section li{font-size:15px;line-height:1.7}
  .section-index{margin-bottom:7px}
  .section ul{padding-left:19px}
  .fact-grid{grid-template-columns:1fr;gap:9px}
  .fact{padding:15px 16px}
  .fact b{font-size:14px}
  .fact span{font-size:13px}
  .data-table{display:block;border:0;margin:18px 0;width:100%;font-size:14px}
  .data-table thead{display:none}
  .data-table tbody{display:grid;gap:10px}
  .data-table tr{display:block;border:1px solid var(--line);border-radius:12px;padding:14px 15px;background:#fafbfd}
  .data-table td{display:block;border:0;padding:0;line-height:1.55}
  .data-table td:first-child{font-size:14px;font-weight:700;margin-bottom:6px}
  .data-table td:last-child{font-size:13px}
  .notice{padding:16px;font-size:13px}
  .notice p{font-size:13px}
  .summary{padding:18px 18px 17px}
  .summary p{font-size:13px}
  .footer{padding:20px 20px 30px;line-height:1.6;align-items:flex-start}
}
@media(max-width:360px){
  .header-inner{padding:12px 13px}
  .header-link{font-size:11px}
  .hero-inner{padding:32px 17px}
  .hero h1{font-size:30px}
  .content{padding-inline:16px}
  .mobile-toc{margin-inline:11px}
}