:root{
  --navy:#07162f;
  --navy-2:#0d2853;
  --blue:#165ed8;
  --red:#e51d3e;
  --ink:#142039;
  --muted:#5c6880;
  --line:#dce4f0;
  --soft:#f3f7fc;
  --white:#fff;
  --max:1120px;
  --shadow:0 24px 70px rgba(7,22,47,.12);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  color:var(--ink);
  background:#fff;
  font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-underline-offset:3px}
a:hover{color:#0b3f9e}
img{display:block;max-width:100%;height:auto}
p{margin:0 0 1.1em}
h1,h2,h3{color:var(--navy);line-height:1.12;letter-spacing:-.025em}
h1{margin:.2em 0 .45em;font-size:clamp(2.35rem,6vw,5.4rem);max-width:1050px}
h2{margin:0 0 .65em;font-size:clamp(1.75rem,3.5vw,3rem)}
h3{margin:0 0 .45em;font-size:1.2rem}
strong{color:var(--navy)}

.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;padding:10px 16px;border-radius:10px;background:var(--navy);color:#fff}
.skip-link:focus{top:12px}
.shell{width:min(calc(100% - 40px),var(--max));margin-inline:auto}

.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(20,32,57,.09);backdrop-filter:blur(16px)}
.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;text-decoration:none;flex:0 0 auto}
.brand img{width:142px}
.site-nav{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap;font-size:.88rem;font-weight:750}
.site-nav a{padding:8px 10px;border-radius:10px;color:#33415c;text-decoration:none}
.site-nav a[aria-current="page"],.site-nav a:hover{background:#edf3fb;color:var(--navy)}
.site-nav .nav-cta{background:var(--red);color:#fff;padding-inline:15px}
.site-nav .nav-cta:hover{background:#bb1330;color:#fff}

.breadcrumbs{padding:24px 0 0;font-size:.84rem;color:var(--muted)}
.breadcrumbs ol{display:flex;gap:8px;flex-wrap:wrap;list-style:none;padding:0;margin:0}
.breadcrumbs li+li::before{content:"/";margin-right:8px;color:#99a6ba}
.breadcrumbs a{color:inherit}

.hero{overflow:hidden;padding:72px 0 66px;background:
  radial-gradient(circle at 88% 16%,rgba(229,29,62,.13),transparent 31%),
  radial-gradient(circle at 7% 0,rgba(22,94,216,.17),transparent 34%),
  linear-gradient(180deg,#fff,#f6f9fd)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;color:var(--blue);font-size:.8rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--red))}
.lede{max-width:830px;font-size:clamp(1.08rem,2vw,1.35rem);color:#33415c}
.direct-answer{max-width:860px;margin:34px 0 0;padding:24px 26px;border:1px solid #cbd8eb;border-left:5px solid var(--blue);border-radius:14px;background:rgba(255,255,255,.82);box-shadow:0 14px 40px rgba(7,22,47,.07);font-size:1.04rem}
.review-line{display:flex;gap:12px 24px;flex-wrap:wrap;margin:24px 0 0;color:var(--muted);font-size:.84rem}

.jump-wrap{padding:28px 0;background:var(--navy);color:#dbe7ff}
.jump-wrap strong{color:#fff}
.jump-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.jump-links a{display:inline-flex;padding:8px 12px;border:1px solid rgba(255,255,255,.18);border-radius:999px;color:#fff;text-decoration:none;font-size:.84rem}
.jump-links a:hover{background:#fff;color:var(--navy)}

.content{padding:74px 0 88px}
.article-section{padding:58px 0;border-top:1px solid var(--line)}
.article-section:first-child{padding-top:0;border-top:0}
.section-intro{max-width:780px;color:var(--muted);font-size:1.04rem}
.grid-2,.grid-3{display:grid;gap:20px;margin-top:28px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{padding:25px;border:1px solid var(--line);border-radius:17px;background:#fff;box-shadow:0 12px 34px rgba(7,22,47,.05)}
.card p:last-child,.callout p:last-child{margin-bottom:0}
.card-kicker{display:block;margin-bottom:8px;color:var(--red);font-size:.73rem;font-weight:900;letter-spacing:.11em;text-transform:uppercase}
.fact-band{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:30px 0 0;border:1px solid var(--line);border-radius:17px;overflow:hidden;background:var(--line)}
.fact{padding:24px;background:#fff}
.fact b{display:block;font-size:1.55rem;line-height:1.15}
.fact span{display:block;margin-top:7px;color:var(--muted);font-size:.88rem}

.table-scroll{overflow-x:auto;margin:28px 0 0;border:1px solid var(--line);border-radius:17px}
table{width:100%;min-width:720px;border-collapse:collapse;background:#fff}
th,td{padding:17px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{background:#edf3fb;color:var(--navy);font-size:.82rem;letter-spacing:.04em;text-transform:uppercase}
tr:last-child td{border-bottom:0}

.steps{counter-reset:step;display:grid;gap:18px;margin:28px 0 0;padding:0;list-style:none}
.steps li{position:relative;padding:24px 24px 24px 78px;border:1px solid var(--line);border-radius:16px;background:#fff}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:22px;top:22px;width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--navy);color:#fff;font-weight:900}

.callout{margin-top:28px;padding:28px;border-radius:18px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#dce8ff;box-shadow:var(--shadow)}
.callout h3,.callout strong{color:#fff}
.callout a{color:#fff}
.warning{border-left:5px solid var(--red);background:#fff3f5;color:#4a2730;box-shadow:none}
.warning h3,.warning strong{color:#3a1620}

.path-card{display:flex;flex-direction:column;align-items:flex-start}
.path-card .button{margin-top:auto}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:47px;margin-top:12px;padding:11px 17px;border-radius:12px;background:var(--red);color:#fff;text-decoration:none;font-weight:850}
.button:hover{background:#b91430;color:#fff}
.button.secondary{background:var(--navy)}
.button.secondary:hover{background:#14376c}

.faq{display:grid;gap:12px;margin-top:25px}
.faq details{border:1px solid var(--line);border-radius:14px;background:#fff;padding:0 20px}
.faq summary{cursor:pointer;padding:18px 0;color:var(--navy);font-weight:850}
.faq details p{padding-bottom:18px;color:#48566f}

.sources{padding:30px;border-radius:18px;background:var(--soft)}
.sources ul{margin:14px 0 0;padding-left:21px}
.sources li{margin:8px 0}
.small-note{font-size:.85rem;color:var(--muted)}

.about-hero h1{max-width:850px}
.timeline{display:grid;grid-template-columns:140px 1fr;gap:24px;margin-top:28px}
.timeline+.timeline{padding-top:25px;border-top:1px solid var(--line)}
.timeline time{color:var(--red);font-weight:900}

.cta-band{padding:56px 0;background:linear-gradient(115deg,#0a2147 0%,#07162f 58%,#4a1021 100%);color:#dce8ff}
.cta-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center}
.cta-band h2{color:#fff}
.cta-actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}

.site-footer{padding:42px 0;background:#040d1d;color:#9eb0cf;font-size:.86rem}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:start}
.site-footer strong{color:#fff}
.site-footer nav{display:flex;gap:10px 17px;flex-wrap:wrap;justify-content:flex-end}
.site-footer a{color:#d6e2f7}

@media (max-width:860px){
  .header-inner{align-items:flex-start;padding:14px 0}
  .brand img{width:122px}
  .site-nav{gap:3px;font-size:.78rem}
  .site-nav a{padding:6px 7px}
  .hero{padding:52px 0 48px}
  .grid-3{grid-template-columns:1fr}
  .fact-band{grid-template-columns:1fr}
  .cta-grid,.footer-grid{grid-template-columns:1fr}
  .cta-actions,.site-footer nav{justify-content:flex-start}
}

@media (max-width:640px){
  body{font-size:16px}
  .shell{width:min(calc(100% - 28px),var(--max))}
  .header-inner{display:block}
  .brand{margin-bottom:10px}
  .site-nav{justify-content:flex-start}
  .site-nav a{padding:6px}
  .site-nav .nav-cta{padding-inline:10px}
  h1{font-size:clamp(2.25rem,12.8vw,3.6rem)}
  .direct-answer,.card,.sources,.callout{padding:20px}
  .grid-2{grid-template-columns:1fr}
  .article-section{padding:45px 0}
  .timeline{grid-template-columns:1fr;gap:5px}
  .steps li{padding:70px 20px 22px}
  .steps li::before{left:20px;top:18px}
}

@media print{
  .site-header,.jump-wrap,.cta-band,.site-footer,.skip-link{display:none}
  body{font-size:12pt}
  .hero,.content{padding:20px 0}
  .card,.callout,.sources{box-shadow:none}
}