:root{--navy:#0f4057;--navy2:#17324a;--orange:#f28b24;--light:#f4f7f9;--white:#fff;--text:#22333d;--muted:#65737d;--border:#d8e2e8;--shadow:0 18px 45px rgba(15,64,87,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:17px/1.7 Arial,Helvetica,sans-serif;color:var(--text);background:var(--light)}a{color:var(--navy);text-underline-offset:3px}.container{max-width:1180px;margin:auto;padding:0 22px}.topbar{background:var(--navy2);color:#fff;font-size:14px}.topbar .container{display:flex;justify-content:space-between;gap:20px;padding-top:8px;padding-bottom:8px}.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand img{width:105px;height:auto}.brand strong{display:block;color:var(--navy);font-size:25px}.brand span{display:block;color:var(--muted);font-size:13px}.nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.nav-links a{font-weight:800;text-decoration:none}.nav-links a:hover{color:var(--orange)}.hero{background:linear-gradient(135deg,#f7fafc 0%,#eef4f7 100%);padding:50px 0 40px}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:12px}.breadcrumbs a{color:var(--muted)}.eyebrow{display:inline-flex;padding:6px 10px;border-radius:999px;background:#fff4e8;color:#7a3e00;font-size:13px;font-weight:800}.hero h1{max-width:980px;margin:13px 0 14px;color:var(--navy);font-size:clamp(34px,5vw,52px);line-height:1.08;letter-spacing:-1px}.lead{max-width:900px;color:#4b5d68;font-size:20px}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px;align-items:start;padding-top:38px;padding-bottom:64px}.article-body,.sidebar-card,.related{background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:0 8px 25px rgba(15,64,87,.07)}.article-body{padding:clamp(24px,4vw,48px)}.article-body h2{color:var(--navy);font-size:30px;line-height:1.2;margin:2.1rem 0 .8rem}.article-body h3{color:var(--navy);font-size:23px;line-height:1.3;margin:1.7rem 0 .6rem}.article-body p{margin:.75rem 0}.article-body ul,.article-body ol{padding-left:1.35rem}.article-body li{margin:.35rem 0}.article-body blockquote{margin:1.4rem 0;padding:16px 20px;border-left:5px solid var(--orange);background:#fff4e8;border-radius:8px}.article-body a{font-weight:700}.notice{margin:1.3rem 0;padding:17px 20px;border-left:5px solid var(--orange);background:#fff8f0;border-radius:10px}.sidebar{display:grid;gap:18px;position:sticky;top:104px}.sidebar-card{padding:22px}.sidebar-card h2{margin:0 0 10px;color:var(--navy);font-size:22px}.sidebar-card ul{list-style:none;margin:0;padding:0}.sidebar-card li+li{border-top:1px solid var(--border)}.sidebar-card a{display:block;padding:10px 0;font-weight:800}.button-row{display:grid;gap:9px}.button{display:flex;align-items:center;justify-content:center;min-height:46px;padding:11px 15px;border-radius:9px;font-weight:800;text-decoration:none;text-align:center}.button.primary{background:var(--orange);color:#fff}.button.secondary{border:2px solid var(--navy);color:var(--navy)}.meta{display:grid;gap:7px;color:var(--muted);font-size:14px}.related{margin-top:26px;padding:26px}.related h2{margin-top:0;color:var(--navy)}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.related-card{display:block;padding:16px;border:1px solid var(--border);border-radius:11px;text-decoration:none;background:#fafcfd}.related-card strong{display:block;color:var(--navy)}.site-footer{background:#102f40;color:#fff;padding:42px 0}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:26px}.site-footer h3{margin-top:0}.site-footer a{color:#fff}.site-footer p,.site-footer li{color:#c8d7df}.site-footer ul{padding-left:18px}.disclaimer{padding:14px 16px;border-left:4px solid var(--orange);background:#fff4e8;border-radius:8px;margin-top:24px;font-size:15px}.faq h3{margin-bottom:.2rem}.index-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.index-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px;text-decoration:none;box-shadow:0 8px 20px rgba(15,64,87,.06)}.index-card strong{display:block;font-size:20px;color:var(--navy)}.index-card span{display:block;color:var(--muted);margin-top:8px}.section{padding:55px 0}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{position:static}.footer-grid{grid-template-columns:1fr}.index-grid{grid-template-columns:1fr 1fr}}@media(max-width:650px){.nav{align-items:flex-start;flex-direction:column;padding:14px 0}.nav-links{gap:10px}.hero{padding:35px 0}.related-grid,.index-grid{grid-template-columns:1fr}.article-body{padding:22px}.article-body h2{font-size:26px}.lead{font-size:18px}}
.ai-image-disclosure{margin:.55rem 0 0;color:#586b76;font-size:.88rem;text-align:right}
.ai-article-disclosure{margin:0 0 1.2rem;padding:.65rem .8rem;border-left:4px solid #fe9003;background:#fff7ed;color:#4d5f69;font-size:.92rem;font-weight:700}