/* ==========================================================================
   火星联盟机场网 (hxlm.lol) — Pure Native CSS Stylesheet
   Zero JS Frameworks · Zero External CSS Libraries · Hardware-Accelerated
   ========================================================================== */

:root {
  --bg-void: #06070d;
  --bg-deep: #0b0e19;
  --bg-card: rgba(14, 18, 32, 0.76);
  --bg-card-strong: rgba(18, 23, 40, 0.92);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-subtle: rgba(255, 255, 255, 0.09);
  --border-mars: rgba(255, 92, 51, 0.34);
  --border-cyan: rgba(56, 189, 248, 0.3);

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

  --mars-red: #ff4d2e;
  --mars-orange: #ff8236;
  --mars-amber: #fbbf24;
  --orbital-cyan: #38bdf8;
  --orbital-emerald: #34d399;

  --grad-mars: linear-gradient(135deg, #ff4d2e 0%, #ff8236 100%);
  --grad-surface: linear-gradient(180deg, rgba(255, 77, 46, 0.1) 0%, rgba(14, 18, 32, 0.85) 100%);

  --shadow-card: 0 18px 42px rgba(0, 0, 0, 0.45);
  --shadow-mars: 0 10px 30px rgba(255, 77, 46, 0.28);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, ui-monospace, monospace;

  --container-max: 1220px;
  --container-wide: 1340px;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.72;
  color: var(--text-primary);
  background-color: var(--bg-void);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

/* ==========================================================================
   Dynamic Animated Cosmic Mars Background (Pure CSS Only)
   ========================================================================== */
.mars-backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 15%, rgba(255, 77, 46, 0.16) 0%, transparent 42%),
    radial-gradient(circle at 82% 22%, rgba(56, 189, 248, 0.12) 0%, transparent 38%),
    radial-gradient(circle at 55% 88%, rgba(194, 65, 12, 0.14) 0%, transparent 48%),
    linear-gradient(180deg, #06070d 0%, #090c18 55%, #06070d 100%);
}

.mars-nebula {
  position: absolute;
  inset: -25%;
  background:
    radial-gradient(ellipse 46% 34% at 28% 30%, rgba(255, 84, 46, 0.18), transparent 70%),
    radial-gradient(ellipse 42% 32% at 75% 65%, rgba(56, 189, 248, 0.14), transparent 70%),
    radial-gradient(ellipse 35% 30% at 50% 45%, rgba(251, 146, 60, 0.08), transparent 75%);
  filter: blur(28px);
  animation: nebulaDrift 26s ease-in-out infinite alternate;
  will-change: transform;
}

.mars-stars,
.mars-stars-secondary {
  position: absolute;
  inset: -40px;
  background-repeat: repeat;
}

.mars-stars {
  background-image:
    radial-gradient(1.5px 1.5px at 24px 36px, rgba(255, 255, 255, 0.85), transparent),
    radial-gradient(1px 1px at 96px 140px, rgba(255, 186, 140, 0.75), transparent),
    radial-gradient(1.5px 1.5px at 180px 64px, rgba(186, 230, 253, 0.85), transparent),
    radial-gradient(1px 1px at 240px 210px, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(1.5px 1.5px at 310px 110px, rgba(255, 130, 54, 0.7), transparent);
  background-size: 340px 260px;
  animation: starDrift 48s linear infinite;
}

.mars-stars-secondary {
  background-image:
    radial-gradient(1px 1px at 50px 80px, rgba(255, 255, 255, 0.55), transparent),
    radial-gradient(2px 2px at 150px 190px, rgba(56, 189, 248, 0.55), transparent),
    radial-gradient(1.5px 1.5px at 270px 45px, rgba(255, 255, 255, 0.65), transparent);
  background-size: 420px 320px;
  animation: starTwinkle 7s ease-in-out infinite alternate, starDriftReverse 68s linear infinite;
}

.mars-grid-floor {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 85% 65% at 50% 28%, #000 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 85% 65% at 50% 28%, #000 30%, transparent 90%);
  animation: gridPan 32s linear infinite;
}

.mars-planet-wrap {
  position: absolute;
  top: 90px;
  right: max(3%, 22px);
  width: clamp(180px, 24vw, 330px);
  aspect-ratio: 1;
  opacity: 0.86;
  animation: marsFloat 14s ease-in-out infinite alternate;
  will-change: transform;
}

.mars-planet {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(circle at 30% 28%, #ffb47b 0%, #f05a28 34%, #ad2914 68%, #340a08 100%);
  box-shadow:
    0 0 60px rgba(255, 77, 46, 0.34),
    0 0 140px rgba(255, 96, 48, 0.16);
}

/* Spinning procedural Martian terrain, basalt plains & craters */
.mars-planet::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background:
    radial-gradient(ellipse 14% 18% at 14% 34%, rgba(92, 18, 10, 0.62) 0%, transparent 72%),
    radial-gradient(ellipse 18% 12% at 32% 58%, rgba(68, 14, 8, 0.56) 0%, transparent 74%),
    radial-gradient(circle 6% at 24% 26%, rgba(255, 198, 148, 0.34) 0%, rgba(120, 26, 12, 0.48) 58%, transparent 72%),
    radial-gradient(circle 4.5% at 41% 44%, rgba(74, 15, 9, 0.6) 0%, transparent 70%),
    radial-gradient(ellipse 15% 19% at 64% 34%, rgba(92, 18, 10, 0.62) 0%, transparent 72%),
    radial-gradient(ellipse 18% 12% at 82% 58%, rgba(68, 14, 8, 0.56) 0%, transparent 74%),
    radial-gradient(circle 6% at 74% 26%, rgba(255, 198, 148, 0.34) 0%, rgba(120, 26, 12, 0.48) 58%, transparent 72%),
    radial-gradient(circle 4.5% at 91% 44%, rgba(74, 15, 9, 0.6) 0%, transparent 70%),
    repeating-linear-gradient(
      14deg,
      rgba(255, 138, 76, 0.08) 0 14px,
      rgba(82, 16, 10, 0.14) 14px 32px
    );
  mix-blend-mode: multiply;
  animation: marsSpin 32s linear infinite;
  will-change: transform;
}

/* 3D spherical terminator shadow & sunlit atmospheric rim */
.mars-planet::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 26% 24%, rgba(255, 224, 185, 0.34) 0%, transparent 40%),
    radial-gradient(circle at 75% 78%, rgba(5, 5, 12, 0.88) 12%, rgba(8, 6, 14, 0.45) 48%, transparent 74%);
  box-shadow:
    inset -34px -26px 56px rgba(4, 4, 10, 0.92),
    inset 10px 8px 26px rgba(255, 184, 130, 0.46);
}

.mars-planet-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 148%;
  height: 148%;
  border-radius: 50%;
  border: 2px solid rgba(56, 189, 248, 0.38);
  box-shadow: 0 0 24px rgba(56, 189, 248, 0.16);
  transform: translate(-50%, -50%) rotate(-20deg) scaleY(0.33) rotate(0deg);
  animation: ringOrbit 12s linear infinite;
  will-change: transform;
}

.mars-planet-ring::after {
  content: "";
  position: absolute;
  top: -12px;
  left: 50%;
  width: 9px;
  height: 24px;
  margin-left: -4.5px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 16px 4px rgba(56, 189, 248, 0.85);
}

.mars-orbit-ring {
  position: absolute;
  top: -180px;
  right: -120px;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 115, 64, 0.2);
  box-shadow:
    inset 0 0 80px rgba(255, 77, 46, 0.06),
    0 0 90px rgba(56, 189, 248, 0.05);
  animation: orbitRotate 55s linear infinite;
}

.mars-orbit-ring::after {
  content: "";
  position: absolute;
  top: 76px;
  left: 76px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mars-orange);
  box-shadow: 0 0 16px 3px rgba(255, 130, 54, 0.78);
}

@keyframes marsFloat {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-10px, 16px, 0); }
}

@keyframes marsSpin {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}

@keyframes ringOrbit {
  from { transform: translate(-50%, -50%) rotate(-20deg) scaleY(0.33) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(-20deg) scaleY(0.33) rotate(360deg); }
}

@keyframes nebulaDrift {
  0% { transform: translate3d(-2%, -2%, 0) scale(1); }
  50% { transform: translate3d(2.5%, 1.5%, 0) scale(1.06); }
  100% { transform: translate3d(-1%, 3%, 0) scale(1.02); }
}

@keyframes starDrift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-170px, -130px, 0); }
}

@keyframes starDriftReverse {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(140px, -110px, 0); }
}

@keyframes starTwinkle {
  0% { opacity: 0.45; }
  100% { opacity: 0.95; }
}

@keyframes gridPan {
  from { background-position: 0 0, 0 0; }
  to { background-position: 0 56px, 56px 0; }
}

@keyframes orbitRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .mars-planet-wrap {
    top: 84px;
    right: -36px;
    opacity: 0.56;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mars-nebula,
  .mars-stars,
  .mars-stars-secondary,
  .mars-grid-floor,
  .mars-orbit-ring,
  .mars-planet-wrap,
  .mars-planet::before,
  .mars-planet-ring,
  .mars-planet-ring::after {
    animation: none;
  }
}

/* ==========================================================================
   Layout Containers & Utilities
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.section-tight {
  padding: 48px 0;
}

.section-header {
  max-width: 780px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-mars);
  background: rgba(255, 77, 46, 0.1);
  color: #ffb088;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.section-desc {
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
}

.text-gradient {
  background: linear-gradient(120deg, #ffffff 15%, #ff9966 60%, #ff4d2e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-cyan {
  color: var(--orbital-cyan);
}

/* ==========================================================================
   Buttons (CTA)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-mars);
  color: #ffffff;
  box-shadow: var(--shadow-mars);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(255, 77, 46, 0.42);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.16);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--border-mars);
  background: rgba(255, 77, 46, 0.12);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Sticky Top Header & Top-Left Brand Logo
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(6, 7, 13, 0.8);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 70px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 20px rgba(255, 77, 46, 0.34);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #ffffff;
}

.brand-sub {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--mars-orange);
  letter-spacing: 0.12em;
}

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle-label span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.18s ease;
}

.site-nav a:hover {
  color: #ffffff;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 76px 0 56px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: rgba(16, 22, 39, 0.82);
  border: 1px solid var(--border-mars);
  font-size: 13px;
  color: #fed7aa;
  margin-bottom: 22px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orbital-emerald);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.22);
}

.hero h1 {
  margin: 0 auto 18px;
  max-width: 1140px;
  font-size: clamp(26px, 3.8vw, 50px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.hero-subline {
  display: inline-block;
  font-size: clamp(20px, 3.4vw, 46px);
}

@media (min-width: 768px) {
  .hero-subline {
    white-space: nowrap;
  }
}

.hero-subtitle {
  margin: 0 auto 30px;
  max-width: 780px;
  font-size: clamp(16px, 1.8vw, 18px);
  color: var(--text-secondary);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 42px;
}

.telemetry-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 980px;
  margin: 0 auto;
}

.telemetry-item {
  padding: 18px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.telemetry-value {
  font-size: 24px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
}

.telemetry-value span {
  color: var(--mars-orange);
}

.telemetry-label {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   GEO Executive Summary Table
   ========================================================================== */
.geo-panel {
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 28px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
}

.geo-panel-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.geo-panel-head h2 {
  margin: 0;
  font-size: 22px;
}

.geo-summary-copy {
  margin: 0 0 20px;
  color: var(--text-secondary);
  font-size: 15px;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 680px;
}

.spec-table th,
.spec-table td {
  padding: 13px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.spec-table th {
  color: #ffb088;
  font-weight: 700;
  background: rgba(255, 77, 46, 0.07);
}

.spec-table td {
  color: var(--text-secondary);
}

.spec-table strong {
  color: #ffffff;
}

/* ==========================================================================
   Features & Nodes Grid
   ========================================================================== */
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card-grid-5 {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.glass-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-mars);
}

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 77, 46, 0.14);
  border: 1px solid var(--border-mars);
  color: var(--mars-orange);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
}

.glass-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.glass-card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.node-card {
  padding: 20px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.node-region {
  font-size: 16px;
  font-weight: 800;
}

.node-ping {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  background: rgba(52, 211, 153, 0.14);
  color: var(--orbital-emerald);
}

.node-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-block;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.tag-hot {
  background: rgba(255, 77, 46, 0.14);
  color: #ffb088;
  border-color: rgba(255, 77, 46, 0.3);
}

.tag-cyan {
  background: rgba(56, 189, 248, 0.12);
  color: #7dd3fc;
  border-color: rgba(56, 189, 248, 0.28);
}

/* ==========================================================================
   ALL-IN-ONE-ROW PRICING ("所有价格要同排")
   Always rendered in a single horizontal row across all tiers!
   ========================================================================== */
.pricing-row-wrap {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 10px;
}

.pricing-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(226px, 1fr));
  gap: 16px;
  align-items: stretch;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px 18px 20px;
  border-radius: var(--radius-lg);
  background: var(--bg-card-strong);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.price-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-mars);
}

.price-card-featured {
  background: linear-gradient(180deg, rgba(255, 77, 46, 0.18) 0%, rgba(16, 20, 36, 0.96) 55%);
  border-color: rgba(255, 92, 51, 0.65);
  box-shadow: 0 20px 44px rgba(255, 77, 46, 0.18);
}

.price-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: var(--grad-mars);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.price-badge-cyan {
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
}

.price-name {
  margin: 4px 0 4px;
  font-size: 18px;
  font-weight: 800;
}

.price-tier-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 18px;
  font-weight: 700;
  color: var(--mars-orange);
}

.price-num {
  font-size: 36px;
  font-weight: 900;
  font-family: var(--font-mono);
  line-height: 1;
  color: #ffffff;
}

.price-cycle {
  font-size: 13px;
  color: var(--text-muted);
}

.price-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-grow: 1;
}

.price-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.price-list li::before {
  content: "✓";
  color: var(--orbital-emerald);
  font-weight: 800;
  flex-shrink: 0;
}

.pricing-note {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.07);
  border: 1px solid var(--border-cyan);
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}

/* ==========================================================================
   Articles Grid & Internal Links Hub
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.article-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-mars);
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.article-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.42;
}

.article-card h3 a:hover {
  color: var(--mars-orange);
}

.article-excerpt {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-grow: 1;
}

.article-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--mars-orange);
}

.article-card-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Clients & Authority Outbound Links
   ========================================================================== */
.outbound-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.outbound-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.outbound-card:hover {
  border-color: var(--border-cyan);
  transform: translateY(-3px);
}

.outbound-card h3 {
  margin: 0;
  font-size: 16px;
}

.outbound-card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.outbound-url {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--orbital-cyan);
  word-break: break-all;
}

/* ==========================================================================
   User Reviews (Bottom Section)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.review-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.review-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.review-author {
  font-weight: 700;
  font-size: 15px;
}

.review-role {
  font-size: 12px;
  color: var(--text-muted);
}

.review-stars {
  color: var(--mars-amber);
  font-size: 14px;
  letter-spacing: 2px;
}

.review-quote {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Pure HTML/CSS FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--border-mars);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 700;
  font-size: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--mars-orange);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 22px 18px;
  font-size: 14.5px;
  color: var(--text-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
}

.faq-answer a {
  color: var(--mars-orange);
  text-decoration: underline;
}

/* ==========================================================================
   Bottom CTA Banner & Footer
   ========================================================================== */
.cta-banner {
  padding: 42px 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 77, 46, 0.2) 0%, rgba(16, 22, 42, 0.94) 55%, rgba(56, 189, 248, 0.14) 100%);
  border: 1px solid var(--border-mars);
  text-align: center;
  box-shadow: var(--shadow-card);
}

.cta-banner h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 34px);
}

.cta-banner p {
  margin: 0 auto 24px;
  max-width: 680px;
  color: var(--text-secondary);
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: rgba(6, 7, 13, 0.92);
  padding: 54px 0 32px;
  margin-top: 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 28px;
  margin-bottom: 34px;
}

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 15px;
  color: #ffffff;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--mars-orange);
}

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   Dedicated Article Page Styles
   ========================================================================== */
.article-shell {
  padding: 42px 0 72px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.breadcrumb a:hover {
  color: var(--mars-orange);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 28px;
  align-items: start;
}

.article-main {
  padding: 34px 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card-strong);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

.article-header {
  padding-bottom: 22px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-header h1 {
  margin: 12px 0 14px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
}

.article-prose h2 {
  margin: 28px 0 12px;
  font-size: 21px;
  color: #ffffff;
  border-left: 3px solid var(--mars-red);
  padding-left: 12px;
}

.article-prose h3 {
  margin: 20px 0 10px;
  font-size: 17px;
  color: #fed7aa;
}

.article-prose p {
  margin: 0 0 16px;
  color: var(--text-secondary);
}

.article-prose ul,
.article-prose ol {
  margin: 0 0 18px;
  padding-left: 20px;
  color: var(--text-secondary);
}

.article-prose li {
  margin-bottom: 8px;
}

.article-prose a {
  color: var(--mars-orange);
  text-decoration: underline;
}

.article-prose strong {
  color: #ffffff;
}

.article-callout {
  margin: 22px 0;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 77, 46, 0.08);
  border: 1px solid var(--border-mars);
  font-size: 14.5px;
}

.article-cta-box {
  margin: 28px 0;
  padding: 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 77, 46, 0.16) 0%, rgba(15, 23, 42, 0.92) 100%);
  border: 1px solid var(--border-mars);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.article-pager {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.pager-link {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pager-link:hover {
  border-color: var(--border-mars);
}

.pager-dir {
  font-size: 12px;
  color: var(--mars-orange);
}

.pager-title {
  font-size: 14px;
  font-weight: 700;
}

.article-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sidebar-box {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card-strong);
  border: 1px solid var(--border-subtle);
}

.sidebar-box h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

.sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13.5px;
}

.sidebar-list a {
  color: var(--text-secondary);
}

.sidebar-list a:hover {
  color: var(--mars-orange);
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */
@media (max-width: 1120px) {
  .card-grid-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .nav-toggle-label {
    display: flex;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
    background: rgba(8, 10, 18, 0.97);
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav-toggle:checked ~ .site-nav {
    display: flex;
  }
  .telemetry-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .card-grid-3,
  .articles-grid,
  .outbound-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .section {
    padding: 52px 0;
  }
  .card-grid-3,
  .card-grid-5,
  .articles-grid,
  .outbound-grid,
  .reviews-grid,
  .footer-grid,
  .article-pager {
    grid-template-columns: 1fr;
  }
  .header-actions .btn-secondary {
    display: none;
  }
  .article-main {
    padding: 22px 18px;
  }
}