:root{
  --navy:#0c1731;--ink:#182333;--muted:#5d6876;--cream:#fffaf1;--paper:#ffffff;--line:#e5e7eb;--gold:#c9902e;--blue:#1b4f8f;--soft:#f6f8fb;--green:#166b55;--red:#a94442;--shadow:0 18px 50px rgba(12,23,49,.10);--radius:22px;--max:1160px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#fbfcfe;color:var(--ink);line-height:1.72}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.skip{position:absolute;left:-9999px;top:auto}.skip:focus{left:16px;top:16px;background:#fff;padding:10px 12px;border-radius:10px;z-index:99}.top{background:var(--navy);color:#dfe7f3;font-size:.92rem}.top .wrap{max-width:var(--max);margin:auto;padding:9px 22px;display:flex;gap:14px;justify-content:space-between;align-items:center}.top strong{color:#fff}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav{max-width:var(--max);margin:auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:11px;color:var(--navy);font-weight:850;letter-spacing:-.02em}.mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;display:grid;place-items:center;box-shadow:0 10px 28px rgba(27,79,143,.25)}.menu{display:flex;align-items:center;gap:13px;flex-wrap:wrap}.menu a{color:var(--ink);font-weight:700;font-size:.93rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff!important;border:0;border-radius:999px;padding:11px 17px;font-weight:850;box-shadow:0 12px 22px rgba(27,79,143,.20)}.button:hover{text-decoration:none;transform:translateY(-1px)}.button.alt{background:#fff;color:var(--navy)!important;border:1px solid #ccd6e3;box-shadow:none}.hero{background:radial-gradient(circle at 80% 10%,rgba(201,144,46,.25),transparent 28%),linear-gradient(135deg,#081126 0%,#0c1731 60%,#1b4f8f 120%);color:#fff}.hero .wrap{max-width:var(--max);margin:auto;padding:78px 22px 68px;display:grid;grid-template-columns:minmax(0,1.15fr) 360px;gap:36px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-weight:900;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:7px 11px;color:#ffe4b0}.hero h1{font-size:clamp(2.25rem,5vw,4.65rem);line-height:1.04;letter-spacing:-.055em;margin:18px 0 18px}.hero p{font-size:1.14rem;color:#e6edf7;max-width:760px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-card{background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.20);border-radius:var(--radius);padding:22px;box-shadow:0 32px 70px rgba(0,0,0,.20)}.hero-card h2{font-size:1.1rem;margin:0 0 12px;color:#fff}.hero-card p,.hero-card li{color:#edf4ff}.wrap{max-width:var(--max);margin:auto;padding:0 22px}.section{padding:54px 0}.notice{border-left:5px solid var(--gold);background:#fff7e6;color:#4a3308;border-radius:16px;padding:16px 18px;margin:24px 0}.notice.safe{border-left-color:var(--green);background:#ecfbf5;color:#123f34}.notice.warn{border-left-color:var(--red);background:#fff1f1;color:#603030}.grid{display:grid;gap:20px}.cards{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.card h3{margin:0 0 9px;line-height:1.24;color:var(--navy);font-size:1.22rem}.card p{margin:0 0 12px;color:var(--muted)}.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.pill{background:var(--soft);border:1px solid #dbe3ee;border-radius:999px;padding:6px 10px;color:#3d5068;font-size:.82rem;font-weight:750}.layout{display:grid;grid-template-columns:minmax(0,1fr) 305px;gap:32px;align-items:start}.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px}.article h1{font-size:clamp(2rem,4vw,3.35rem);line-height:1.08;letter-spacing:-.045em;margin:0 0 14px;color:var(--navy)}.article h2{font-size:1.63rem;line-height:1.22;color:var(--navy);margin:36px 0 12px}.article h3{font-size:1.2rem;color:var(--navy);margin:24px 0 8px}.article p{margin:0 0 16px}.article ul,.article ol{padding-left:22px}.article li{margin:8px 0}.toc{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.toc strong{display:block;color:var(--navy);margin-bottom:10px}.toc a{display:block;padding:8px 0;border-bottom:1px solid #edf1f7;color:#374b62;font-weight:700}.toc a:last-child{border-bottom:0}.table-wrap{border:1px solid var(--line);border-radius:16px;overflow:auto;margin:20px 0}table{border-collapse:collapse;width:100%;background:#fff}th,td{padding:13px 15px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}th{background:#f0f4f9;color:var(--navy)}tr:last-child td{border-bottom:0}.checklist{background:var(--soft);border:1px dashed #c4d2e3;border-radius:18px;padding:20px;margin:22px 0}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;margin:12px 0;padding:16px}.faq summary{font-weight:850;color:var(--navy);cursor:pointer}.small{font-size:.93rem;color:var(--muted)}.crumbs{font-size:.92rem;color:var(--muted);margin:4px 0 22px}.crumbs a{color:#496984}.footer{background:#081126;color:#d9e4f2;margin-top:54px}.footer .wrap{padding:42px 22px}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px}.footer a{color:#d9e4f2}.footer h3{color:#fff;margin-top:0}.legal{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:18px;font-size:.9rem;color:#aebbd0}.wordcount{font-size:.8rem;color:#6f7f91;margin-top:24px}.source-list li{word-break:break-word}.ad-box{background:#f9fafb;border:1px solid #dfe4ea;border-radius:18px;padding:18px;margin:20px 0}.ad-box strong{color:var(--navy)}@media(max-width:940px){.hero .wrap,.layout{grid-template-columns:1fr}.toc{position:static}.cards{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.menu{display:none}.article{padding:24px}}@media(max-width:620px){.cards{grid-template-columns:1fr}.hero .wrap{padding:58px 18px}.wrap,.nav{padding-left:18px;padding-right:18px}.hero h1{font-size:2.25rem}.article{padding:20px}.top .wrap{display:block}.button{width:100%;margin-top:8px}}

/* AdSense placements */
.ad-wrap{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;margin:22px 0;box-shadow:0 10px 28px rgba(12,23,49,.06);overflow:hidden}
.ad-label{display:block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:#7a8696;font-weight:800;margin-bottom:8px}
.ad-banner{grid-column:1/-1;min-height:120px}
.ad-sidebar{margin-top:18px;min-height:250px;box-shadow:none;background:#fbfcfe}
.adsbygoogle{min-height:90px}
.ad-sidebar .adsbygoogle{min-height:250px}


/* Additional AdSense placements */
.ad-incontent,.ad-lowercontent,.ad-bottomcontent{margin:30px 0;min-height:140px;background:#ffffff}
.ad-bottomcontent{margin-top:34px}
@media(max-width:940px){.ad-banner,.ad-incontent,.ad-lowercontent,.ad-bottomcontent{min-height:110px}.ad-sidebar{min-height:180px}}


/* Mobile responsiveness hardening */
html,body{max-width:100%;overflow-x:hidden}
img,svg,video,iframe{max-width:100%;height:auto}
.article,.toc,.card,.notice,.ad-box,.ad-wrap{max-width:100%}
.article{overflow-wrap:anywhere;word-break:normal}
.article p,.article li{overflow-wrap:break-word}
pre,code{white-space:pre-wrap;word-break:break-word}

@media(max-width:1100px){
  :root{--max:1040px}
  .layout{grid-template-columns:minmax(0,1fr) 280px;gap:24px}
  .menu{gap:9px}
  .menu a{font-size:.88rem}
}

@media(max-width:940px){
  .site-header{position:relative;top:auto}
  .nav{align-items:flex-start;flex-direction:column;gap:12px}
  .brand{font-size:1rem}
  .menu{display:flex;width:100%;overflow-x:auto;overflow-y:hidden;flex-wrap:nowrap;gap:8px;padding:6px 0 4px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
  .menu a{white-space:nowrap;background:#f6f8fb;border:1px solid #e3e9f2;border-radius:999px;padding:8px 11px;font-size:.84rem;flex:0 0 auto}
  .menu .button{box-shadow:none;margin:0;background:var(--blue);border-color:var(--blue)}
  .hero .wrap{grid-template-columns:1fr;gap:22px;padding:54px 22px}
  .hero-card{padding:18px}
  .layout{display:block}
  .article{width:100%;padding:24px;margin:0 auto}
  .toc{position:static;margin-top:24px;width:100%}
  .toc a{padding:10px 0}
  .ad-banner{min-height:100px;margin-top:0}
  .ad-sidebar{min-height:160px}
  .footer{margin-top:34px}
}

@media(max-width:720px){
  body{font-size:16px;line-height:1.68}
  .top .wrap{display:flex;flex-direction:column;gap:5px;align-items:flex-start;padding:8px 16px;font-size:.82rem}
  .nav,.wrap{padding-left:16px;padding-right:16px}
  .section{padding:32px 0}
  .article h1{font-size:2rem;line-height:1.12;letter-spacing:-.035em}
  .article h2{font-size:1.34rem;margin-top:28px}
  .article h3{font-size:1.08rem}
  .article ul,.article ol{padding-left:18px}
  .notice,.ad-box,.faq details{border-radius:14px;padding:14px}
  .table-wrap{margin-left:-2px;margin-right:-2px}
  th,td{padding:11px 12px;min-width:150px}
  .hero-actions{display:grid;grid-template-columns:1fr;gap:10px}
  .hero-actions .button{width:100%;margin:0}
  .cards{grid-template-columns:1fr}
  .footer .wrap{padding:32px 16px}
}

@media(max-width:620px){
  .mark{width:36px;height:36px;border-radius:12px;font-size:.82rem}
  .brand span:last-child{line-height:1.2}
  .menu{display:grid;grid-template-columns:1fr 1fr;overflow:visible;gap:8px}
  .menu a{white-space:normal;text-align:center;border-radius:12px;padding:10px 8px;line-height:1.2}
  .menu .button{grid-column:1/-1;width:100%;margin-top:0;padding:11px 10px}
  .hero .wrap{padding:42px 16px 38px}
  .hero h1{font-size:2.05rem}
  .hero p{font-size:1rem}
  .article{padding:18px;border-radius:18px;box-shadow:0 10px 24px rgba(12,23,49,.08)}
  .card{padding:18px;border-radius:18px}
  .toc{padding:16px;border-radius:18px}
  .ad-wrap{padding:10px;border-radius:14px;margin:18px 0;min-height:96px}
  .adsbygoogle{min-height:90px!important;max-width:100%}
  .ad-sidebar .adsbygoogle{min-height:160px!important}
  .ad-incontent,.ad-lowercontent,.ad-bottomcontent{min-height:100px;margin:24px 0}
  .footer-grid{grid-template-columns:1fr;gap:16px}
}

@media(max-width:380px){
  .nav,.wrap{padding-left:12px;padding-right:12px}
  .article{padding:16px}
  .article h1{font-size:1.78rem}
  .menu{grid-template-columns:1fr}
}