/* ===================================================================
   闪电vpn (flashvpn.homes) - 深海星图与全息生物荧光设计系统 (Celestial Abyssal UI)
   排版创新：非对称分屏 Hero + 水平四级海缆加速管道 + 异形瀑布流卡片 + 双列矩阵 FAQ
   背景创新：SVG 等深线拓扑波纹 (Bathymetric Waves) + 深海声呐呼吸微光 + 浮游光斑
   =================================================================== */

:root {
  --bg-deep: #030712;
  --bg-abyss: #070e20;
  --bg-shelf: #0d1a3a;
  --bg-card: rgba(13, 26, 58, 0.75);
  --bg-card-hover: rgba(20, 38, 82, 0.9);

  --brand-cyan: #00f5d4;
  --brand-cyan-glow: rgba(0, 245, 212, 0.35);
  --brand-blue: #38bdf8;
  --brand-indigo: #6366f1;
  --brand-coral: #f43f5e;
  --brand-green: #10b981;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --border-subsea: rgba(0, 245, 212, 0.22);
  --border-subsea-bright: #00f5d4;
  --border-muted: #1e293b;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --shadow-ocean: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px rgba(0, 245, 212, 0.12);
  --shadow-glow: 0 0 35px rgba(0, 245, 212, 0.25);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.75;
  overflow-x: hidden;
  /* Topographic Bathymetric Lines & Oceanic Gradients */
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(0, 245, 212, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 70%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
}

/* Background Topographic Wave SVG Layer */
.bathymetric-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='800' height='800' viewBox='0 0 800 800'%3E%3Cg fill='none' stroke='%2300f5d4' stroke-width='1'%3E%3Cpath d='M-100,200 Q200,100 500,250 T1000,180'/%3E%3Cpath d='M-100,320 Q250,220 520,380 T1000,300'/%3E%3Cpath d='M-100,450 Q220,380 480,500 T1000,420'/%3E%3Cpath d='M-100,580 Q300,500 550,620 T1000,550'/%3E%3Cpath d='M-100,700 Q200,650 520,750 T1000,680'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 800px 800px;
}

a {
  color: var(--brand-cyan);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--brand-blue);
}

/* Floating Pill Header */
.site-header {
  position: sticky;
  top: 1rem;
  z-index: 100;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.header-glass-bar {
  background: rgba(7, 14, 32, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-pill);
  padding: 0.65rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-whale {
  border-radius: 50%;
  box-shadow: 0 0 12px var(--brand-cyan-glow);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}

.brand-title span {
  color: var(--brand-cyan);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-cyan);
}

.btn-header-cta {
  background: linear-gradient(135deg, var(--brand-cyan) 0%, #0284c7 100%);
  color: #030712 !important;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.45rem 1.25rem;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 16px var(--brand-cyan-glow);
  transition: all 0.25s ease;
}

.btn-header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(0, 245, 212, 0.5);
}

/* Page Layout */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
  position: relative;
  z-index: 1;
}

/* INNOVATIVE LAYOUT 1: Asymmetric Split Hero */
.hero-split-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3rem 0 4rem;
}

.hero-left-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-subsea-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(0, 245, 212, 0.08);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--brand-cyan);
  margin-bottom: 1.5rem;
}

.sonar-ping-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 10px #00f5d4;
  animation: sonarBlink 2s infinite ease-in-out;
}

@keyframes sonarBlink {
  0%, 100% { opacity: 0.3; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  font-weight: 900;
  line-height: 1.22;
  color: #fff;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-title-gradient {
  background: linear-gradient(135deg, #00f5d4 0%, #38bdf8 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-lead-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-action-row {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.btn-primary-action {
  background: linear-gradient(135deg, var(--brand-cyan) 0%, #0284c7 100%);
  color: #030712 !important;
  font-size: 1.05rem;
  font-weight: 800;
  padding: 0.85rem 2.2rem;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-glow);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  transition: all 0.25s ease;
}

.btn-primary-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0, 245, 212, 0.45);
}

.btn-secondary-action {
  background: rgba(13, 26, 58, 0.6);
  color: var(--text-secondary) !important;
  border: 1px solid var(--border-subsea);
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}

.btn-secondary-action:hover {
  border-color: var(--brand-cyan);
  color: #fff !important;
}

.hero-micro-metrics {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.metric-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.metric-pill strong {
  color: var(--brand-cyan);
  font-family: var(--font-mono);
  font-size: 1rem;
}

/* Hero Right: Embedded Interactive Sonar Terminal */
.hero-sonar-terminal {
  background: rgba(7, 14, 32, 0.85);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-ocean);
  position: relative;
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-muted);
}

.terminal-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.terminal-status-light {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--brand-green);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-green);
  box-shadow: 0 0 6px #10b981;
}

.cable-routes-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.cable-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(13, 26, 58, 0.7);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  transition: all 0.2s ease;
}

.cable-item:hover {
  border-color: var(--border-subsea-bright);
  background: rgba(20, 38, 82, 0.8);
}

.cable-name {
  font-weight: 600;
  color: #fff;
}

.cable-latency {
  font-family: var(--font-mono);
  color: var(--brand-cyan);
  font-weight: 700;
}

.cable-status-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--brand-green);
}

/* INNOVATIVE LAYOUT 2: Horizontal 4-Stage Subsea Pipeline */
.section-headline {
  text-align: center;
  margin-bottom: 3rem;
}

.section-label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--brand-cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.6rem;
}

.section-h2 {
  font-size: 2.1rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.02em;
}

.section-subtext {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0.6rem auto 0;
}

.pipeline-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 4.5rem;
  position: relative;
}

.pipeline-timeline::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-blue), var(--brand-indigo));
  z-index: 0;
  opacity: 0.4;
}

.pipeline-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-md);
  padding: 1.8rem 1.4rem;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-ocean);
  transition: all 0.25s ease;
}

.pipeline-step-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-cyan);
  background: var(--bg-card-hover);
}

.pipeline-step-number {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-abyss);
  border: 2px solid var(--brand-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--brand-cyan);
  margin-bottom: 1.25rem;
  box-shadow: 0 0 14px var(--brand-cyan-glow);
}

.pipeline-step-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.pipeline-step-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* INNOVATIVE LAYOUT 3: Bathymetric Sonar Latency Visualizer */
.sonar-tool-container {
  background: linear-gradient(180deg, var(--bg-abyss) 0%, #040918 100%);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 4.5rem;
  box-shadow: var(--shadow-ocean);
}

.sonar-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.sonar-control-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.sonar-control-group select, .sonar-control-group input[type="range"] {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--bg-deep);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
}

.sonar-control-group select:focus {
  border-color: var(--brand-cyan);
  box-shadow: 0 0 12px var(--brand-cyan-glow);
}

.btn-trigger-sonar {
  width: 100%;
  padding: 0.75rem;
  background: linear-gradient(135deg, var(--brand-cyan) 0%, #0284c7 100%);
  color: #030712;
  font-weight: 800;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  margin-top: 1.5rem;
  transition: all 0.2s ease;
}

.btn-trigger-sonar:hover {
  box-shadow: 0 0 20px var(--brand-cyan-glow);
}

.sonar-display-screen {
  background: #02050e;
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
}

.sonar-metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.2rem;
  margin-bottom: 1.2rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-muted);
}

.metric-sonar-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.metric-sonar-val {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--brand-cyan);
}

/* INNOVATIVE LAYOUT 4: Asymmetrical Masonry Card Deck for Articles */
.articles-masonry-deck {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  grid-gap: 1.5rem;
  margin-bottom: 4.5rem;
}

.article-hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-ocean);
  transition: all 0.25s ease;
}

.article-hero-card:hover {
  border-color: var(--brand-cyan);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.articles-side-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.article-stack-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  box-shadow: var(--shadow-ocean);
  transition: all 0.25s ease;
}

.article-stack-card:hover {
  border-color: var(--brand-cyan);
  transform: translateY(-2px);
}

.articles-bottom-triplet {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  grid-column: 1 / -1;
}

.article-card-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(0, 245, 212, 0.1);
  border: 1px solid var(--border-subsea);
  border-radius: 4px;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--brand-cyan);
  margin-bottom: 0.8rem;
}

.article-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.45;
  margin-bottom: 0.6rem;
  display: block;
}

.article-card-title:hover {
  color: var(--brand-cyan);
}

.article-card-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-muted);
  padding-top: 0.85rem;
}

/* INNOVATIVE LAYOUT 5: 2-Column Grid FAQ */
.faq-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 4.5rem;
}

.faq-box-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-md);
  padding: 1.6rem;
  box-shadow: var(--shadow-ocean);
  transition: border-color 0.2s;
}

.faq-box-card:hover {
  border-color: var(--brand-cyan);
}

.faq-box-q {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.faq-box-q::before {
  content: "Q.";
  color: var(--brand-cyan);
  font-family: var(--font-mono);
  font-weight: 800;
}

.faq-box-a {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Callout Section */
.abyssal-callout {
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.1) 0%, rgba(56, 189, 248, 0.05) 100%);
  border: 1px solid var(--border-subsea-bright);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-glow);
  margin-bottom: 3rem;
}

.abyssal-callout h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.6rem;
}

.abyssal-callout p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

/* Legal & In-depth Content Card */
.legal-card, .article-content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subsea);
  border-radius: var(--radius-lg);
  padding: 2.8rem 2.2rem;
  box-shadow: var(--shadow-ocean);
  margin-bottom: 2.5rem;
}

.page-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 0.8rem;
  letter-spacing: -0.02em;
}

.update-time {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-muted);
}

.content-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 2rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border-subsea);
}

.content-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--brand-cyan);
  margin: 1.5rem 0 0.75rem;
}

.content-body p {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.2rem;
}

.content-body ul, .content-body ol {
  margin: 0.8rem 0 1.4rem 1.6rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.content-body li {
  margin-bottom: 0.45rem;
}

.content-body blockquote {
  border-left: 4px solid var(--brand-cyan);
  background: rgba(0, 245, 212, 0.06);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-size: 0.98rem;
  color: var(--text-secondary);
}

.data-table-wrapper {
  overflow-x: auto;
  margin: 1.6rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-muted);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.data-table th {
  background: var(--bg-shelf);
  color: #fff;
  padding: 0.85rem 1rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border-muted);
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-muted);
  color: var(--text-secondary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: var(--bg-card-hover);
}

.code-box {
  background: #02050e;
  border: 1px solid var(--border-muted);
  color: #38bdf8;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  overflow-x: auto;
  margin: 1.4rem 0;
}

/* Footer */
.site-footer {
  background: #02050e;
  border-top: 1px solid var(--border-muted);
  padding: 3.5rem 1.5rem 2rem;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  font-size: 0.92rem;
  color: var(--text-dim);
  margin-top: 0.8rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-dim);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--brand-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--border-muted);
  padding-top: 1.8rem;
  font-size: 0.82rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-disclosure {
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-split-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .pipeline-timeline {
    grid-template-columns: 1fr 1fr;
  }
  .pipeline-timeline::before {
    display: none;
  }
  .articles-masonry-deck {
    grid-template-columns: 1fr;
  }
  .articles-bottom-triplet {
    grid-template-columns: 1fr;
  }
  .faq-grid-2col {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 0.5rem;
  }
  .main-nav .nav-link {
    display: none;
  }
  .pipeline-timeline {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .legal-card, .article-content-card {
    padding: 1.8rem 1.2rem;
  }
}