:root {
  --ink: #f8f8f2;
  --muted: #aaa8b5;
  --panel: rgba(30, 29, 41, 0.88);
  --panel-strong: #242330;
  --line: rgba(255, 255, 255, 0.1);
  --lime: #c8ff4d;
  --coral: #ff6b5f;
  --violet: #a58bff;
  --cyan: #57ddff;
  --brown: #9b5a3c;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(165, 139, 255, 0.17), transparent 29rem),
    radial-gradient(circle at 95% 8%, rgba(87, 221, 255, 0.12), transparent 32rem),
    #121117;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
}

body::before {
  opacity: 0.48;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(255,255,255,.92) 0 1px, transparent 1.8px),
    radial-gradient(circle at 72% 31%, rgba(87,221,255,.84) 0 1.2px, transparent 2px),
    radial-gradient(circle at 34% 76%, rgba(200,255,77,.82) 0 1px, transparent 1.9px),
    radial-gradient(circle at 88% 82%, rgba(255,255,255,.8) 0 .8px, transparent 1.7px),
    radial-gradient(circle at 48% 48%, rgba(165,139,255,.82) 0 1px, transparent 2px);
  background-size: 290px 250px;
}

body::after {
  background: linear-gradient(180deg, rgba(18, 17, 23, 0), rgba(18, 17, 23, 0.68));
}

a { color: var(--cyan); }
a:hover { color: var(--lime); }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 9px 12px;
  border-radius: 9px;
  color: #121117;
  background: var(--lime);
  font-weight: 900;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.site-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 17, 23, 0.88);
  backdrop-filter: blur(18px);
}

.site-header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 950;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.site-brand img {
  width: 46px;
  height: 38px;
  object-fit: contain;
  filter: drop-shadow(0 0 9px rgba(210, 126, 72, 0.48));
}

.site-brand small {
  display: block;
  color: var(--lime);
  font-size: 0.58rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar { display: none; }

.site-nav a {
  display: block;
  padding: 9px 10px;
  border-radius: 9px;
  color: #d7d5de;
  font-size: 0.77rem;
  font-weight: 800;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #151515;
  background: var(--lime);
}

.page-main { padding: 58px 0 42px; }

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.7fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 30px;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 13px;
  color: var(--lime);
  font-size: 0.7rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-hero h1 {
  margin: 0;
  max-width: 800px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.35rem, 6vw, 4.7rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.page-lead {
  margin: 20px 0 0;
  max-width: 770px;
  color: #c7c4d0;
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.hero-note {
  padding: 18px;
  border: 1px solid rgba(200, 255, 77, 0.17);
  border-radius: 16px;
  color: #d9d7df;
  background: rgba(200, 255, 77, 0.055);
  font-size: 0.84rem;
}

.hero-note strong { display: block; margin-bottom: 5px; color: var(--lime); }

.content-card {
  margin-top: 14px;
  padding: clamp(20px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background:
    radial-gradient(circle at 100% 0, rgba(87, 221, 255, 0.07), transparent 22rem),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.content-card h2 {
  margin: 0 0 12px;
  color: #faf9f5;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 3.2vw, 2.25rem);
  line-height: 1.16;
}

.content-card h3 {
  margin: 24px 0 7px;
  color: #f8f7f3;
  font-size: 1.05rem;
  line-height: 1.3;
}

.content-card p { margin: 0 0 13px; color: #c1bfca; }
.content-card p:last-child { margin-bottom: 0; }
.content-card li { margin: 5px 0; color: #c1bfca; }
.content-card ul, .content-card ol { margin: 10px 0 0; padding-left: 1.25rem; }

.grid-2,
.grid-3 {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.mini-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.035);
}

.mini-card .number {
  display: grid;
  width: 34px;
  height: 34px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 50%;
  color: #151515;
  background: var(--lime);
  font-weight: 950;
}

.mini-card h2,
.mini-card h3 { margin: 0 0 7px; font-family: inherit; font-size: 1.04rem; }
.mini-card p { margin: 0; color: var(--muted); font-size: 0.87rem; }

.callout {
  margin-top: 16px;
  padding: 16px 18px;
  border-left: 4px solid var(--cyan);
  border-radius: 0 13px 13px 0;
  color: #d8d6df;
  background: rgba(87, 221, 255, 0.06);
}

.callout.warning {
  border-left-color: var(--coral);
  background: rgba(255, 107, 95, 0.065);
}

.callout strong { color: var(--ink); }

.definition-list {
  display: grid;
  grid-template-columns: minmax(160px, 0.34fr) minmax(0, 1fr);
  gap: 0;
  margin: 12px 0 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.definition-list dt,
.definition-list dd {
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.definition-list dt { color: var(--lime); font-weight: 900; background: rgba(255, 255, 255, 0.025); }
.definition-list dd { color: #c1bfca; }
.definition-list > :nth-last-child(-n + 2) { border-bottom: 0; }

.data-table-wrap { overflow-x: auto; }

.data-table {
  width: 100%;
  margin-top: 14px;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.data-table th,
.data-table td {
  padding: 13px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th { color: var(--lime); background: rgba(255, 255, 255, 0.045); }
.data-table td { color: #c1bfca; }

.faq-list { display: grid; gap: 10px; }

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

.faq-list summary {
  padding: 16px 18px;
  color: #f6f5f1;
  font-weight: 850;
  cursor: pointer;
}

.faq-list details > div { padding: 0 18px 16px; color: #c1bfca; }

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.button-link {
  display: inline-flex;
  min-height: 45px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 0;
  border-radius: 11px;
  color: #151515;
  background: var(--lime);
  font-weight: 950;
  text-decoration: none;
}

.button-link:hover { color: #151515; filter: brightness(1.05); }
.button-link.secondary { color: var(--ink); background: var(--panel-strong); }

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.article-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--ink);
  background:
    radial-gradient(circle at 100% 0, rgba(200, 255, 77, 0.09), transparent 13rem),
    rgba(255, 255, 255, 0.035);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.article-card:hover {
  border-color: rgba(200, 255, 77, 0.42);
  color: var(--ink);
  background-color: rgba(255, 255, 255, 0.055);
  transform: translateY(-3px);
}

.article-card .article-icon { margin-bottom: 20px; font-size: 2rem; line-height: 1; }
.article-card .article-kicker,
.article-meta {
  color: var(--lime);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-card h2,
.article-card h3 {
  margin: 8px 0 10px;
  color: #faf9f5;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  line-height: 1.18;
}

.article-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }
.article-card .read-more { margin-top: auto; padding-top: 20px; color: var(--cyan); font-size: 0.8rem; font-weight: 900; }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.75rem;
}

.breadcrumbs a { text-decoration: none; }
.article-byline { margin: 14px 0 0; color: var(--muted); font-size: 0.78rem; }

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: start;
  gap: 22px;
}

.article-layout > article { min-width: 0; }
.article-sidebar { position: sticky; top: 96px; display: grid; gap: 14px; }

.article-toc,
.practice-summary {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
}

.article-toc strong,
.practice-summary strong { color: var(--ink); }
.article-toc ol { margin: 10px 0 0; padding-left: 1.15rem; }
.article-toc li { margin: 6px 0; color: var(--muted); font-size: 0.78rem; }
.article-toc a { text-decoration: none; }
.practice-summary p { margin: 7px 0 0; color: var(--muted); font-size: 0.78rem; }

.step-list { counter-reset: article-step; list-style: none; padding: 0 !important; }
.step-list li {
  position: relative;
  min-height: 42px;
  margin: 12px 0 !important;
  padding-left: 52px;
}
.step-list li::before {
  position: absolute;
  top: -4px;
  left: 0;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  color: #151515;
  background: var(--lime);
  font-weight: 950;
  content: counter(article-step);
  counter-increment: article-step;
}

.article-disclaimer {
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.75rem;
}

.contact-box {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.contact-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 14px;
  color: #151515;
  background: var(--lime);
  font-weight: 950;
}

.site-footer {
  margin-top: 34px;
  padding: 26px 0 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.76rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 1.35fr);
  gap: 30px;
}

.site-footer strong { color: var(--ink); }
.site-footer p { margin: 6px 0 0; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 14px; }
.footer-links a { text-decoration: none; }

@media (max-width: 900px) {
  .site-header { position: static; }
  .site-header-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .site-nav { width: 100%; justify-content: flex-start; overflow-x: auto; padding-bottom: 4px; }
  .site-nav li { flex: 0 0 auto; }
  .page-hero { grid-template-columns: 1fr; gap: 20px; }
  .grid-3 { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .site-shell { width: min(100% - 20px, 1120px); }
  .site-nav { flex-wrap: wrap; overflow-x: visible; }
  .page-main { padding-top: 36px; }
  .grid-2 { grid-template-columns: 1fr; }
  .article-grid,
  .article-sidebar { grid-template-columns: 1fr; }
  .definition-list { grid-template-columns: 1fr; }
  .definition-list dt { border-bottom: 0; }
  .definition-list > :nth-last-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .definition-list > :last-child { border-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}