/* SmoothBoost Landing Page - Modern Dark Theme & High-Performance Layout */
/* Inspired by the clean, minimal, Apple-like dark aesthetic of BitChord (bitchord.kushagrasingh.in) */

:root {
  --bg-dark: #000000;
  --bg-surface: #060504;
  --bg-card: #0a0a0a;
  --bg-card-hover: #121212;
  --bg-panel: #0d0d0f;
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-subtle-strong: rgba(255, 255, 255, 0.18);
  --border-highlight: rgba(56, 189, 248, 0.4);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.45);
  --text-dim: rgba(255, 255, 255, 0.28);
  --accent-cyan: #06b6d4;
  --accent-sky: #38bdf8;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-2xl: 36px;
  --font-sans: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Droid Sans Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

[hidden] {
  display: none !important;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  background-color: var(--bg-dark);
  color: var(--text-primary);
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 1000;
  background: #ffffff;
  color: #000000;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: top 0.2s ease;
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
}

/* Fixed Top Scroll Progress Bar */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.85);
  z-index: 999;
  transform-origin: left;
  width: 0%;
  pointer-events: none;
  transition: width 0.08s ease-out;
}

/* Typography */
h1, h2, h3, h4 {
  color: #ffffff;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

code, pre {
  font-family: var(--font-mono);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* BitChord-style Atmospheric Mesh Blobs */
.mesh-container {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.mesh-blob {
  position: absolute;
  border-radius: 9999px;
  filter: blur(40px);
  opacity: 0.85;
  will-change: transform;
}

.blob-cyan {
  width: 780px;
  height: 780px;
  left: -12%;
  top: -18%;
  background: radial-gradient(closest-side, rgba(6, 182, 212, 0.45) 0%, rgba(6, 182, 212, 0.25) 30%, rgba(6, 182, 212, 0.08) 60%, transparent 100%);
  animation: mesh-drift-a 26s ease-in-out infinite alternate;
}

.blob-sky {
  width: 700px;
  height: 700px;
  right: -10%;
  top: -10%;
  background: radial-gradient(closest-side, rgba(56, 189, 248, 0.45) 0%, rgba(56, 189, 248, 0.22) 30%, rgba(56, 189, 248, 0.06) 60%, transparent 100%);
  animation: mesh-drift-b 31s ease-in-out infinite alternate;
}

.blob-emerald {
  width: 650px;
  height: 650px;
  left: 20%;
  top: 40%;
  background: radial-gradient(closest-side, rgba(16, 185, 129, 0.35) 0%, rgba(16, 185, 129, 0.18) 30%, rgba(16, 185, 129, 0.05) 60%, transparent 100%);
  animation: mesh-drift-c 22s ease-in-out infinite alternate;
}

.mesh-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 40%, transparent 25%, rgba(0, 0, 0, 0.65) 100%);
}

@keyframes mesh-drift-a {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(60px, 40px, 0) scale(1.08); }
  100% { transform: translate3d(-30px, 70px, 0) scale(0.95); }
}

@keyframes mesh-drift-b {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-50px, 50px, 0) scale(1.06); }
  100% { transform: translate3d(40px, -40px, 0) scale(0.92); }
}

@keyframes mesh-drift-c {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(40px, -50px, 0) scale(1.1); }
  100% { transform: translate3d(-50px, 30px, 0) scale(0.94); }
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background-color 0.3s ease, border-color 0.3s ease, padding 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background-color: rgba(6, 5, 4, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-subtle);
  padding: 12px 0;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13.5px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #ffffff;
}

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

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: #ffffff;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

/* Buttons — BitChord Signature Pill Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.2s ease;
  border: none;
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: rgba(255, 255, 255, 0.92);
  color: #000000;
}

.btn-primary:hover {
  background: #ffffff;
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.28);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.22);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.45);
  transform: translateY(-1px);
}

.btn-secondary:hover svg.star-icon {
  transform: rotate(72deg);
  fill: #ffffff;
}

svg.star-icon {
  transition: transform 0.3s ease, fill 0.3s ease;
}

/* Hero Section */
.hero-section {
  padding: 130px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-outer-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--radius-2xl);
  background: #060504;
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.1);
  padding: 56px 24px 60px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-tag .tag-dot {
  width: 7px;
  height: 7px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

.hero-title {
  font-size: clamp(30px, 5.5vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
  max-width: 860px;
}

.hero-title .text-white {
  color: #ffffff;
}

.hero-title .text-muted {
  color: rgba(255, 255, 255, 0.45);
}

.hero-lead {
  font-size: clamp(14px, 1.8vw, 16px);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 640px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-stats-line {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 6px;
}

.hero-stats-line strong {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

.hero-platforms-line {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 40px;
}

.hero-platforms-line a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.hero-platforms-line a:hover {
  color: #ffffff;
}

/* 3D Kinetic Canvas Stage Inside Hardware Frame */
.hero-stage-wrapper {
  position: relative;
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
}

.device-frame {
  position: relative;
  border-radius: var(--radius-2xl);
  background: #1b1b1d;
  padding: 2px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.7), inset 0 0 0 1px rgba(255, 255, 255, 0.14);
}

.device-inner {
  border-radius: calc(var(--radius-2xl) - 2px);
  background: #000000;
  padding: 10px;
  overflow: hidden;
}

.stage-viewport {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0a0a0c;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.canvas-3d {
  width: 100%;
  height: 100%;
  display: block;
}

.stage-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
}

.stage-status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: #ffffff;
}

.status-dot-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

/* Integrations / Browser Compatibility Row */
.integrations-section {
  padding: 50px 0 20px;
}

.integrations-head {
  text-align: center;
  margin-bottom: 24px;
}

.integrations-title {
  font-size: 15px;
  font-weight: 500;
  color: #ffffff;
}

.integrations-desc {
  max-width: 560px;
  margin: 4px auto 0;
  font-size: 13px;
  line-height: 18px;
  color: rgba(255, 255, 255, 0.5);
}

.integrations-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px 36px;
  padding: 0;
}

.integration-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.8);
}

.integration-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.integration-item span {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Section Shells */
.section-padding {
  padding: 80px 0 30px;
}

.section-card {
  position: relative;
  border-radius: var(--radius-2xl);
  background: #0a0a0a;
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.1);
  padding: 48px 32px;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-eyebrow {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(26px, 3.8vw, 38px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.section-desc {
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  line-height: 1.6;
}

/* Spotlight Card Mechanics */
.spotlight-card {
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.spotlight-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  background: radial-gradient(280px circle at var(--spot-x, 50%) var(--spot-y, 50%), rgba(255, 255, 255, 0.12), transparent 70%);
  z-index: 1;
}

.spotlight-card:hover::before {
  opacity: 1;
}

.spotlight-card > * {
  position: relative;
  z-index: 2;
}

/* Profiles Interactive Showcase */
.profile-showcase-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
}

.profile-selector-pane {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.profile-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-align: left;
}

.profile-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.profile-btn.is-active {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.35);
}

.profile-btn-badge {
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.1);
}

.profile-btn.is-active[data-profile-btn="auto"] .profile-btn-badge { background: #06b6d4; color: #000; }
.profile-btn.is-active[data-profile-btn="ultra"] .profile-btn-badge { background: #10b981; color: #000; }
.profile-btn.is-active[data-profile-btn="balanced"] .profile-btn-badge { background: #3b82f6; color: #fff; }
.profile-btn.is-active[data-profile-btn="battery"] .profile-btn-badge { background: #f59e0b; color: #000; }
.profile-btn.is-active[data-profile-btn="custom"] .profile-btn-badge { background: #8b5cf6; color: #fff; }

.profile-detail-pane {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 0.8px solid var(--border-subtle);
  padding-bottom: 14px;
  gap: 12px;
}

.detail-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.profile-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}

.badge-auto { background: var(--accent-cyan); color: #000; }
.badge-ultra { background: var(--accent-emerald); color: #000; }
.badge-balanced { background: var(--accent-blue); color: #fff; }
.badge-battery { background: var(--accent-amber); color: #000; }
.badge-custom { background: var(--accent-purple); color: #fff; }

.asset-badge {
  font-size: 12px;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.14);
  border-radius: 9999px;
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.metric-card-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 4px;
}

.metric-card-val {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  font-family: var(--font-mono);
}

.sim-rules-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 8px;
}

.sim-rule-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  font-size: 13px;
}

.sim-rule-item.is-enabled {
  color: #ffffff;
}

.sim-rule-item.is-enabled .sim-rule-icon {
  color: var(--accent-cyan);
}

.sim-rule-item.is-disabled {
  opacity: 0.4;
  color: var(--text-muted);
}

.sim-rule-note {
  color: var(--accent-sky);
  font-size: 11px;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.feature-card {
  padding: 28px;
  border-radius: var(--radius-lg);
}

.feature-icon-wrap {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13.5px;
  line-height: 1.6;
}

/* Scroll Benchmark Comparator */
.benchmark-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.benchmark-box {
  background: #0a0a0a;
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.benchmark-box.is-optimized {
  box-shadow: inset 0 0 0 0.8px rgba(16, 185, 129, 0.4), 0 0 30px rgba(16, 185, 129, 0.06);
}

.benchmark-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.benchmark-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.badge-unopt { background: #ef4444; color: #fff; }
.badge-opt { background: #10b981; color: #000; }

.benchmark-scroll-target {
  height: 200px;
  overflow-y: scroll;
  background: rgba(0, 0, 0, 0.45);
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
}

.benchmark-scroll-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scroll-dummy-item {
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.7);
}

.benchmark-stats-strip {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.02);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.8);
}

/* Platform & Archetype Tabs */
.platform-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.platform-tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: 9999px;
  color: rgba(255, 255, 255, 0.65);
  font-weight: 600;
  font-size: 13.5px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.platform-tab-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.07);
}

.platform-tab-btn.is-active {
  background: rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.4);
  color: #ffffff;
}

.platform-panel {
  background: #0a0a0a;
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px;
}

.platform-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
}

.step-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: steps;
}

.step-item {
  display: flex;
  gap: 14px;
  counter-increment: steps;
}

.step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.25);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
}

.step-text h4 {
  font-size: 14.5px;
  margin-bottom: 2px;
}

.step-text p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  line-height: 1.5;
}

.platform-download-card {
  background: rgba(0, 0, 0, 0.5);
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* FAQ Accordion */
.faq-grid {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #0a0a0a;
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.faq-item.is-open {
  box-shadow: inset 0 0 0 0.8px rgba(255, 255, 255, 0.25);
}

.faq-question {
  width: 100%;
  padding: 18px 22px;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.faq-icon {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 22px 18px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13.5px;
  line-height: 1.6;
}

/* Changelog / Release Notes Box */
.changelog-box {
  background: rgba(0, 0, 0, 0.5);
  box-shadow: inset 0 0 0 0.8px var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  font-size: 13.5px;
  max-height: 360px;
  overflow-y: auto;
}

.changelog-heading {
  color: #ffffff;
  margin: 14px 0 6px;
  font-size: 14.5px;
}

.changelog-list {
  padding-left: 20px;
  margin-bottom: 12px;
}

.changelog-item {
  margin-bottom: 5px;
  color: rgba(255, 255, 255, 0.65);
}

.changelog-code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--accent-sky);
}

/* Footer */
.site-footer {
  border-top: 0.8px solid var(--border-subtle);
  padding: 56px 0 32px;
  background: #000000;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
  margin-top: 10px;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 13.5px;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 0.8px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
}

/* Accessibility & Reduced Motion */
:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  .mesh-blob {
    animation: none !important;
  }
}

/* ==========================================================================
   MOBILE & RESPONSIVE POLISH (Eliminating all cramped layouts)
   ========================================================================== */

@media (max-width: 980px) {
  .platform-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 14px 0;
  }
  .site-header.is-scrolled {
    padding: 10px 0;
  }
  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(6, 5, 4, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    border-bottom: 0.8px solid var(--border-subtle);
    display: none;
  }
  .nav-menu.is-open {
    display: flex;
  }
  .nav-wrapper {
    position: relative;
    justify-content: space-between;
    gap: 12px;
  }
  .logo-group {
    font-size: 1.05rem;
    gap: 8px;
    flex-shrink: 0;
  }
  .header-actions {
    gap: 8px;
    flex-shrink: 0;
  }
  .header-actions .btn-secondary {
    display: none;
  }
  .header-actions .btn-primary {
    min-height: 38px;
    height: 38px;
    padding: 0 14px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    gap: 6px;
    border-radius: 9999px;
    flex-shrink: 0;
  }
  .header-actions .btn-primary span {
    display: inline;
  }
  .btn-text-mobile {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 6px;
    border-radius: var(--radius-sm);
    color: #ffffff;
    flex-shrink: 0;
  }

  @media (max-width: 480px) {
    .btn-text-full {
      display: none;
    }
    .btn-text-mobile {
      display: inline;
    }
  }

  /* Spacing Scale Reductions */
  .hero-section {
    padding: 95px 0 24px;
  }
  .section-padding {
    padding: 44px 0 16px;
  }
  .section-head {
    margin-bottom: 24px;
  }
  .section-title {
    font-size: clamp(22px, 6vw, 30px);
  }
  .section-desc {
    font-size: 13px;
    line-height: 1.5;
  }

  /* Outer Card Padding Reduction to Free Up Space */
  .section-card {
    padding: 24px 14px;
    border-radius: var(--radius-lg);
  }

  /* Horizontal Scrollable Profile Tabs on Mobile */
  .profile-showcase-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .profile-selector-pane {
    flex-direction: row;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 2px 2px 10px;
    gap: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .profile-selector-pane::-webkit-scrollbar {
    display: none;
  }
  .profile-btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 9px 14px;
    font-size: 13px;
    gap: 8px;
  }

  /* Profile Details Pane */
  .profile-detail-pane {
    gap: 16px;
  }
  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .metric-card {
    padding: 10px 12px;
  }
  .metric-card-val {
    font-size: 13.5px;
  }
  .sim-rules-list {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .sim-rule-item {
    padding: 8px 10px;
    font-size: 12px;
  }

  /* Benchmark Section on Mobile */
  .benchmark-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .benchmark-box {
    padding: 16px 12px;
  }
  .benchmark-scroll-target {
    height: 160px;
    padding: 10px;
  }
  .benchmark-stats-strip {
    flex-direction: column;
    gap: 4px;
    font-size: 11.5px;
  }

  /* Feature Grid on Mobile */
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .feature-card {
    padding: 20px 16px;
  }

  /* Horizontal Scrollable Tabs on Mobile */
  .platform-tabs-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 4px 4px 10px;
    margin-bottom: 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .platform-tabs-nav::-webkit-scrollbar {
    display: none;
  }
  .platform-tab-btn {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 12.5px;
    padding: 8px 14px;
  }

  /* Nested Panels Breathing Room */
  .platform-panel {
    padding: 18px 12px;
    border-radius: var(--radius-md);
  }
  .platform-download-card {
    padding: 20px 14px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 14px;
  }
  .hero-outer-card {
    padding: 36px 12px 32px;
    border-radius: 20px;
  }
  .hero-title {
    font-size: 26px;
    line-height: 1.15;
    margin-bottom: 14px;
  }
  .hero-lead {
    font-size: 13.5px;
    line-height: 1.5;
    margin-bottom: 24px;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  .hero-ctas .btn {
    width: 100%;
    max-width: 320px;
  }
  .hero-platforms-line {
    margin-bottom: 28px;
    font-size: 12px;
  }
  .hero-stage-wrapper {
    max-width: 100%;
  }
  .device-frame {
    border-radius: 18px;
  }
  .device-inner {
    border-radius: 16px;
    padding: 4px;
  }
  .stage-viewport {
    aspect-ratio: 16 / 12;
    border-radius: 12px;
  }
  .stage-overlay {
    bottom: 6px;
    left: 6px;
    right: 6px;
    padding: 6px 10px;
    font-size: 11px;
  }
  .integrations-list {
    gap: 14px 20px;
  }
  .integration-item span {
    font-size: 13px;
  }
  .integration-item svg {
    width: 18px;
    height: 18px;
  }
  .faq-question {
    padding: 14px 16px;
    font-size: 13.5px;
  }
  .faq-answer {
    padding: 0 16px 14px;
    font-size: 12.5px;
  }
  .changelog-box {
    padding: 14px 12px;
    font-size: 12.5px;
  }
  .site-footer {
    padding: 40px 0 24px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}