:root{
  --ink:#1f2937;
  --ink-deep:#141c27;
  --ink-soft:#374151;
  --ink-line:#2c3948;
  --accent:#c9a227;
  --accent-soft:#e6c352;
  --paper:#f4f5f7;
  --card:#ffffff;
  --text:#252d3a;
  --muted:#5d6879;
  --line:#e1e5ea;
  --radius:14px;
  --shadow:0 12px 34px rgba(31,41,55,.10);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.65;
  overflow-x:hidden;
}
img,svg{max-width:100%}
img{height:auto;display:block}
a{color:#1f2937;text-decoration:underline;text-underline-offset:2px}
a:hover{color:#8c6f14}
.shell{width:100%;max-width:1140px;margin:0 auto;padding:0 18px}

.site-header{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(120deg,var(--ink-deep),var(--ink) 55%,#2b3a4d);
  color:#fff;
  box-shadow:0 2px 16px rgba(20,28,39,.28);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:68px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(140deg,var(--accent),#8c6f14);
  color:#151c26;flex:0 0 auto;
}
.brand-mark.small{width:30px;height:30px;border-radius:9px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.4px}
.brand-tag{font-size:11px;text-transform:uppercase;letter-spacing:1.4px;color:#b7c2d0}
.primary-nav{display:flex;align-items:center;gap:18px}
.primary-nav ul{display:flex;gap:16px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.primary-nav a{color:#dde3ea;text-decoration:none;font-size:15px;padding:6px 2px;border-bottom:2px solid transparent}
.primary-nav a:hover{color:#fff;border-bottom-color:var(--accent)}
.nav-cta{border-bottom:none !important}
.nav-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,.3);border-radius:10px;width:44px;height:40px;padding:9px 10px;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:#fff;margin:4px 0;border-radius:2px;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  padding:13px 22px;border-radius:11px;font-weight:600;font-size:16px;
  text-decoration:none;cursor:pointer;transition:transform .15s ease,box-shadow .2s ease,background .2s ease;
  max-width:100%;
}
.btn-accent{background:linear-gradient(135deg,var(--accent-soft),var(--accent));color:#1b2330;box-shadow:0 8px 20px rgba(201,162,39,.32)}
.btn-accent:hover{background:linear-gradient(135deg,var(--accent),#a8841a);color:#131a24;transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:16px 28px;font-size:17px}

.breadcrumbs{background:#eaedf1;border-bottom:1px solid var(--line);font-size:14px}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:11px 0}
.breadcrumbs li{display:flex;align-items:center;gap:8px;color:var(--muted)}
.breadcrumbs li+li::before{content:"\203A";color:#9aa4b2}
.breadcrumbs a{color:var(--ink-soft);text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}

.hero{
  background:
    radial-gradient(900px 420px at 88% -12%,rgba(201,162,39,.20),transparent 60%),
    radial-gradient(700px 380px at 6% 108%,rgba(94,124,160,.28),transparent 62%),
    linear-gradient(135deg,var(--ink-deep),var(--ink) 60%,#2a394c);
  color:#eef2f6;padding:52px 0 58px;
}
.hero-inner{display:grid;grid-template-columns:1.55fr 1fr;gap:34px;align-items:start}
.hero-kicker{display:inline-block;font-size:12.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--accent-soft);border:1px solid rgba(201,162,39,.4);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.hero-title{font-size:40px;line-height:1.16;font-weight:700;letter-spacing:-.4px;margin:0 0 16px}
.hero-sub{color:#ccd5df;font-size:17px;margin:0 0 24px}
.hero-note{font-size:13.5px;color:#9dabba;margin:16px 0 0}
.hero-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:22px}
.panel-title{font-size:13px;letter-spacing:1.5px;text-transform:uppercase;color:var(--accent-soft);margin-bottom:14px;font-weight:700}
.panel-list{list-style:none;margin:0;padding:0;display:grid;gap:13px}
.panel-list li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:#e3e9ef}
.panel-list svg{flex:0 0 auto;color:var(--accent-soft);margin-top:2px}

.layout{padding:34px 18px 8px}
.content-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px 34px 28px;max-width:100%;overflow-wrap:break-word}

.content h1{
  font-size:34px;line-height:1.22;margin:0 0 22px;color:var(--ink-deep);
  font-weight:700;letter-spacing:-.3px;
}
.content h2{
  font-size:25px;line-height:1.28;margin:38px 0 14px;color:var(--ink-deep);
  padding-left:15px;border-left:4px solid var(--accent);font-weight:700;scroll-margin-top:90px;
}
.content h3{font-size:20px;line-height:1.32;margin:28px 0 10px;color:var(--ink-soft);font-weight:700}
.content p{margin:0 0 16px}
.content strong{color:var(--ink-deep)}
.content em{color:var(--muted)}
.content a{color:#8c6f14;font-weight:600}
.content ul,.content ol{margin:0 0 18px;padding-left:0;list-style:none}
.content ol{counter-reset:li;}
.content ul li,.content ol li{position:relative;padding-left:28px;margin-bottom:10px}
.content ul li::before{
  content:"";position:absolute;left:6px;top:11px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,var(--accent-soft),var(--accent));
}
.content ol li{counter-increment:li}
.content ol li::before{content:counter(li);position:absolute;left:0;top:1px;width:21px;height:21px;border-radius:50%;background:var(--ink);color:#fff;font-size:12.5px;display:flex;align-items:center;justify-content:center;font-weight:700}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 20px}
.content table{width:100%;border-collapse:collapse;min-width:520px;font-size:15.5px}
.content th,.content td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
.content th{background:var(--ink);color:#fff;font-weight:600}
.content tbody tr:nth-child(even){background:#f7f8fa}

.cta-strip{
  margin-top:30px;padding:22px;border-radius:14px;
  background:linear-gradient(120deg,var(--ink-deep),#2d3d51);
  color:#fff;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.cta-text{font-size:19px;font-weight:600}

.faq-section{padding:44px 0 10px}
.section-label{font-size:13px;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:16px}
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:transparent;border:0;padding:17px 18px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink-deep);font-family:inherit;
}
.faq-q svg{flex:0 0 auto;color:var(--accent);transition:transform .25s ease}
.faq-item.is-open .faq-q{background:#f7f8fa}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{display:none;padding:0 18px 17px;color:var(--muted)}
.faq-item.is-open .faq-a{display:block}
.faq-a p{margin:0}

.info-section{padding:40px 0 56px}
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 6px 20px rgba(31,41,55,.06)}
.info-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.info-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:11px;background:var(--ink);color:var(--accent-soft);flex:0 0 auto}
.info-title{font-size:19px;font-weight:700;color:var(--ink-deep)}
.info-body p{margin:0 0 13px}
.info-body p:last-child{margin-bottom:0}
.info-body a{color:#8c6f14;font-weight:600;word-break:break-word}
.author-name{font-size:18px;font-weight:700;color:var(--ink-deep);margin-bottom:5px}
.author-role{color:var(--muted);margin:0}
.source-list{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.source-list li{position:relative;padding-left:24px}
.source-list li::before{
  content:"";position:absolute;left:4px;top:10px;width:8px;height:8px;border-radius:50%;
  border:2px solid var(--accent);
}

.site-footer{background:linear-gradient(120deg,var(--ink-deep),var(--ink));color:#c3ccd7;padding:30px 0}
.footer-inner{display:flex;gap:20px;align-items:flex-start;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-name{font-weight:700;letter-spacing:.5px}
.footer-text{flex:1 1 420px;min-width:0}
.footer-text p{margin:0;font-size:14.5px;line-height:1.7}

@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr}
  .hero-title{font-size:33px}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .primary-nav{
    position:absolute;left:0;right:0;top:100%;
    background:var(--ink-deep);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:14px 18px 20px;display:none;border-top:1px solid var(--ink-line);
  }
  .primary-nav.is-open{display:flex}
  .primary-nav ul{flex-direction:column;gap:2px}
  .primary-nav a{display:block;padding:11px 4px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-cta{margin-top:10px;text-align:center}
  .header-inner{position:relative}
}
@media (max-width:768px){
  body{font-size:16px}
  .hero{padding:36px 0 40px}
  .hero-title{font-size:27px}
  .hero-sub{font-size:16px}
  .content-card{padding:22px 18px}
  .content h1{font-size:26px}
  .content h2{font-size:21px;padding-left:12px;margin-top:30px}
  .content h3{font-size:18px}
  .info-grid{grid-template-columns:1fr}
  .cta-strip{flex-direction:column;align-items:stretch;text-align:center}
  .cta-strip .btn{width:100%}
  .btn-lg{width:100%;padding:15px 18px;font-size:16px}
  .faq-q{font-size:16px;padding:15px 14px}
}
@media (max-width:420px){
  .shell{padding:0 14px}
  .hero-title{font-size:24px}
  .brand-name{font-size:18px}
  .content-card{padding:18px 14px}
  .cta-text{font-size:17px}
}