:root{
  --navy-950:#071a33; --navy-900:#0A2240; --navy-800:#0E2F5A; --blue-700:#164A8A; --blue-500:#2F6DB5;
  --sky-100:#EAF2FB; --sky-400:#5FA8E8; --gold-500:#E3A12F; --gold-400:#F5B841;
  --ink:#1B2533; --muted:#5B6B80; --soft:#F3F6FB; --line:#DDE5F0;
  --shadow:0 10px 30px rgba(10,34,64,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--ink);background:#fff;line-height:1.7}
h1,h2,h3{font-family:Poppins,sans-serif;line-height:1.25;color:var(--navy-800)}
a{color:var(--blue-700)}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.ph{background:#FFF4D9;border:1px dashed var(--gold-500);border-radius:6px;padding:0 6px;color:#7A5410;font-size:.92em;overflow-wrap:anywhere}
.btn{white-space:nowrap;display:inline-flex;align-items:center;gap:8px;font-family:Poppins,sans-serif;font-weight:600;font-size:.95rem;text-decoration:none;border-radius:999px;padding:13px 26px;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-gold{background:var(--gold-400);color:var(--navy-900)}
.btn-gold:hover{background:#ffc75c}
.btn-ghost{border:2px solid rgba(255,255,255,.5);color:#fff}

/* header */
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:78px;gap:20px}
.brand{flex:none}
.brand svg{height:56px;width:234px;display:block;--lh-body:#0E2F5A;--lh-door:#EAF2FB;--lh-beam-op:.55}
nav.main{display:flex;gap:4px}
nav.main a{white-space:nowrap;font:600 .93rem Poppins,sans-serif;color:var(--navy-800);text-decoration:none;padding:10px 14px;border-radius:10px}
nav.main a:hover{background:var(--sky-100)}

/* article hero */
.a-hero{background:linear-gradient(160deg,var(--navy-900),var(--navy-800) 60%,var(--blue-700));color:#fff;padding:56px 0 64px}
.a-hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:44px;align-items:center}
.crumbs{font-size:.85rem;color:#B9C9DE;margin-bottom:14px}
.crumbs a{color:#B9C9DE;text-decoration:none}
.crumbs a:hover{color:var(--gold-400)}
.tag{display:inline-block;background:var(--gold-400);color:var(--navy-900);font:700 .75rem Poppins,sans-serif;letter-spacing:.08em;text-transform:uppercase;border-radius:999px;padding:4px 12px;margin-bottom:14px}
.a-hero h1{color:#fff;font-size:clamp(1.8rem,3.6vw,2.8rem);margin:0 0 14px;letter-spacing:-.01em}
.a-hero p{color:#D4E0F0;font-size:1.1rem;margin:0 0 18px}
.meta{font-size:.88rem;color:#B9C9DE}
.a-art{border-radius:20px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.a-art svg{display:block;width:100%;height:auto}

/* article body */
.a-body{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:60px 20px 80px}
article.post{font-size:1.06rem;max-width:740px}
article.post h2{font-size:1.55rem;margin:2em 0 .6em}
article.post h3{font-size:1.2rem;margin:1.6em 0 .5em}
article.post p{margin:0 0 1.1em}
article.post ul,article.post ol{padding-left:1.3em;margin:0 0 1.2em}
article.post li{margin-bottom:.45em}
article.post .lead{font-size:1.18rem;color:var(--navy-800)}
.callout{background:var(--sky-100);border-left:4px solid var(--blue-500);border-radius:0 12px 12px 0;padding:18px 22px;margin:1.6em 0}
.callout.gold{background:#FFF7E6;border-color:var(--gold-500)}
.callout p:last-child{margin:0}
.callout b{color:var(--navy-800)}
table.cmp{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.96rem}
table.cmp th,table.cmp td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
table.cmp th{background:var(--navy-800);color:#fff;font-family:Poppins,sans-serif;font-weight:600}
table.cmp tr:nth-child(even) td{background:var(--soft)}
.table-scroll{overflow-x:auto}
.note{font-size:.88rem;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:2.4em}

aside.side{position:sticky;top:100px;align-self:start;display:grid;gap:20px}
.side-card{border:1px solid var(--line);border-radius:16px;padding:24px;background:#fff}
.side-card.dark{background:var(--navy-800);border-color:var(--navy-800);color:#D4E0F0}
.side-card.dark h3{color:#fff}
.side-card h3{font-size:1.1rem;margin:0 0 8px}
.side-card p{margin:0 0 16px;font-size:.95rem}
.side-card ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.side-card li a{text-decoration:none;font-weight:600;color:var(--navy-800);font-size:.95rem}
.side-card li a:hover{color:var(--gold-500)}

/* bottom CTA */
.cta{background:var(--soft);padding:64px 0}
.cta .box{background:linear-gradient(120deg,var(--navy-900),var(--blue-700));color:#fff;border-radius:24px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{color:#fff;margin:0 0 6px;font-size:clamp(1.5rem,3vw,2rem)}
.cta p{margin:0;color:#C9D6E8}

/* footer */
footer.site{background:var(--navy-950);color:#AFC0D6;padding:44px 0 26px;font-size:.88rem}
footer .top{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.1)}
footer a{color:#AFC0D6;text-decoration:none}
footer a:hover{color:var(--gold-400)}
footer .links{display:flex;gap:20px;flex-wrap:wrap}
footer .disc{font-size:.78rem;color:#8597B0;line-height:1.65;margin-top:22px}

@media (max-width:1020px){
  nav.main{display:none}
  .a-hero .wrap{grid-template-columns:1fr}
  .a-art{max-width:520px}
  .a-body{grid-template-columns:1fr}
  aside.side{position:static}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .a-body{padding:44px 16px 60px}
  .brand svg{height:44px;width:184px}
  header.site .btn{display:none}
  .cta .box{padding:32px 24px}
}