:root {
  --rfe-bg: #f3f6fb;
  --rfe-surface: #ffffff;
  --rfe-border: #d9e2ee;
  --rfe-text: #0f172a;
  --rfe-muted: #475569;
  --rfe-accent: #1d4ed8;
  --rfe-accent-soft: rgba(29, 78, 216, 0.1);
  --rfe-shadow: 0 14px 28px rgba(15, 23, 42, 0.08);
  --rfe-radius: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--rfe-bg);
  color: var(--rfe-text);
  font-family: "IBM Plex Sans", "Inter", "Segoe UI", sans-serif;
  line-height: 1.6;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.page-header {
  background: #ffffff;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--rfe-text);
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: 21px;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.header-nav a {
  color: var(--rfe-text);
  text-decoration: none;
  font-weight: 600;
}

.header-nav a:hover {
  color: var(--rfe-accent);
}

.header-cta {
  border-radius: 999px;
  padding: 8px 14px;
  border: 1px solid rgba(29, 78, 216, 0.3);
  background: var(--rfe-accent-soft);
}

.page-main {
  padding: 28px 0 56px;
}

.panel {
  background: var(--rfe-surface);
  border: 1px solid var(--rfe-border);
  border-radius: var(--rfe-radius);
  box-shadow: var(--rfe-shadow);
}

.summary-panel {
  padding: clamp(22px, 4vw, 34px);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--rfe-muted);
  font-weight: 700;
}

h1 {
  margin: 0 0 12px;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.summary-text {
  margin: 0;
  color: #1e293b;
  font-size: clamp(16px, 2vw, 19px);
}

.layout-grid {
  margin-top: 18px;
  display: grid;
  gap: 16px;
  grid-template-columns: 1.15fr 0.85fr;
}

.abstract-panel,
.details-panel {
  padding: 22px;
}

h2 {
  margin: 0 0 10px;
  font-size: 23px;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
}

.abstract-panel p,
.details-panel p {
  margin: 0;
  color: #334155;
}

.abstract-lead {
  font-size: 16px;
  margin-bottom: 12px !important;
}

.abstract-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.abstract-points li {
  border-left: 3px solid rgba(29, 78, 216, 0.38);
  background: #f8fbff;
  border-radius: 10px;
  padding: 10px 12px;
  color: #1e293b;
}

.abstract-points strong {
  display: block;
  margin-bottom: 2px;
}

.detail-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.detail-list li {
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 12px;
  background: #f8fbff;
  padding: 10px 12px;
}

.detail-list strong {
  display: block;
  margin-bottom: 2px;
}

.cta-row {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 14px;
  text-decoration: none;
  font-weight: 700;
}

.btn-primary {
  background: var(--rfe-accent);
  color: #ffffff;
}

.btn-secondary {
  border: 1px solid rgba(15, 23, 42, 0.18);
  color: var(--rfe-text);
  background: #ffffff;
}

.page-footer {
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  background: #ffffff;
}

.footer-inner {
  padding: 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--rfe-muted);
  font-size: 14px;
}

.footer-links {
  display: inline-flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  color: inherit;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--rfe-accent);
}

@media (max-width: 800px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-nav {
    width: 100%;
  }
}