/* ============================================
   ZingDisk Website — Apple-Inspired Design
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-bg: #000000;
  --color-bg-elevated: #1d1d1f;
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #f5f5f7;
  --color-text-secondary: #86868b;
  --color-text-muted: #6e6e73;
  --color-cyan: #64d2ff;
  --color-gold: #ffd60a;
  --color-purple: #bf5af2;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Inter', 'Helvetica Neue', sans-serif;
  --max-width: 980px;
  --max-width-wide: 1200px;
  --nav-height: 48px;
  --section-spacing: 160px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  overflow-x: hidden;
  font-size: 17px;
}

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

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

.lazy-fadein {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-fadein.loaded {
  opacity: 1;
}

code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', Menlo, monospace;
  font-size: 0.85em;
  background: rgba(100, 210, 255, 0.08);
  color: var(--color-cyan);
  padding: 2px 7px;
  border-radius: 4px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Navigation — Apple-style frosted bar
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
  transition: background 0.36s;
}

.nav.scrolled {
  background: rgba(0, 0, 0, 0.88);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 22px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.2px;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
}

.nav-logo-text {
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-cta {
  color: var(--color-text) !important;
  background: none;
  padding: 0;
  border-radius: 0;
}

.nav-cta:hover {
  color: var(--color-cyan) !important;
  background: none !important;
}

/* Language Picker */
.lang-picker {
  position: relative;
}

.lang-current {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  color: var(--color-text-secondary);
  font-family: var(--font);
  font-size: 11px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
  white-space: nowrap;
}

.lang-current:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 130px;
  background: rgba(29, 29, 31, 0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 0.5px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 4px;
  z-index: 200;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.lang-dropdown.open {
  display: block;
}

.lang-option {
  display: block;
  width: 100%;
  padding: 7px 12px;
  background: none;
  border: none;
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-family: var(--font);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.lang-option:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.lang-option.active {
  color: var(--color-cyan);
}

/* Mobile toggle */
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-mobile-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-text-secondary);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ============================================
   Buttons — Apple pill style
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font);
  font-size: 17px;
  font-weight: 400;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-cyan);
  color: #000;
}

.btn-primary:hover {
  background: #8ae0ff;
  transform: scale(1.02);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

/* ============================================
   Hero — Dramatic, Apple keynote style
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 60px) 24px 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 800px;
  background: radial-gradient(
    ellipse at center,
    rgba(100, 210, 255, 0.06) 0%,
    rgba(255, 214, 10, 0.02) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 700px;
  margin-bottom: 64px;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(56px, 10vw, 96px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.045em;
  margin-bottom: 20px;
}

.hero-title-line {
  display: block;
}

.hero-title-accent {
  background: linear-gradient(90deg, var(--color-cyan), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 21px;
  font-weight: 400;
  line-height: 1.52;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}

.hero-note {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

/* Hero Screenshot */
.hero-mockup {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-screenshot {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.6),
    0 0 120px rgba(100, 210, 255, 0.04);
}

/* ============================================
   Section Common — Apple typography hierarchy
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-badge {
  display: inline-block;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-cyan);
  background: none;
  border: none;
  border-radius: 0;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.section-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.07;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 19px;
  font-weight: 400;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.52;
}

/* ============================================
   Mode Cards — Glass morphism
   ============================================ */
.mode-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 64px;
}

.mode-card {
  background: rgba(255, 255, 255, 0.03);
  border: 0.5px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 36px 28px;
  position: relative;
  transition: background 0.4s, transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.mode-card:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: scale(1.02);
}

.mode-blazing:hover, .mode-ultra:hover { border-color: rgba(100, 210, 255, 0.15); }
.mode-fast:hover, .mode-optimized:hover { border-color: rgba(255, 214, 10, 0.15); }
.mode-normal:hover, .mode-extreme:hover { border-color: rgba(191, 90, 242, 0.15); }

.mode-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.mode-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.mode-card p {
  font-size: 14px;
  line-height: 1.52;
  color: var(--color-text-secondary);
}

.mode-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 980px;
  background: rgba(100, 210, 255, 0.1);
  color: var(--color-cyan);
}

.mode-tag-soon {
  background: rgba(191, 90, 242, 0.1);
  color: var(--color-purple);
}

/* ============================================
   Benchmark Bars — Clean & minimal
   ============================================ */
.bench-section {
  background: rgba(255, 255, 255, 0.02);
  border: 0.5px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  padding: 48px 40px;
  margin-bottom: 48px;
}

.bench-title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.bench-note {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 36px;
}

.bench-chart {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bench-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.bench-label {
  flex-shrink: 0;
  width: 130px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-align: right;
}

.bench-bar-track {
  flex: 1;
  height: 32px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.bench-bar {
  height: 100%;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
  transition: width 1s cubic-bezier(0.25, 1, 0.5, 1);
  min-width: 60px;
}

.bench-value {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.bench-bar-zing {
  background: linear-gradient(90deg, var(--color-cyan), #3dbbcc);
  color: #000;
}

.bench-bar-daisy {
  background: rgba(255, 214, 10, 0.15);
  color: var(--color-gold);
}

.bench-bar-grand {
  background: rgba(191, 90, 242, 0.12);
  color: var(--color-purple);
}

.bench-bar-finder {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-secondary);
}

.bench-faster {
  text-align: center;
  margin-top: 28px;
  font-size: 17px;
  color: var(--color-text-secondary);
}

.bench-faster strong {
  color: var(--color-cyan);
  font-weight: 600;
}

/* ============================================
   Section 1: Speed
   ============================================ */
.section-speed {
  padding: var(--section-spacing) 24px;
  position: relative;
}

.speed-showcase {
  max-width: 720px;
  margin: 0 auto 80px;
}

.speed-screenshot {
  width: 100%;
  height: auto;
  aspect-ratio: 2272 / 1472;
  border-radius: 16px;
  background: var(--color-bg-elevated);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 80px rgba(100, 210, 255, 0.03);
}

/* ============================================
   Section 2: Memory
   ============================================ */
.section-memory {
  padding: var(--section-spacing) 24px;
  position: relative;
}

.mem-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  margin-bottom: 80px;
  flex-wrap: wrap;
}

.mem-stat {
  text-align: center;
}

.mem-stat-number {
  font-size: clamp(56px, 8vw, 80px);
  font-weight: 700;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.mem-stat-unit {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mem-stat-label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.mem-stat-divider {
  width: 0.5px;
  height: 56px;
  background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   Section 3: AI
   ============================================ */
.section-ai {
  padding: var(--section-spacing) 24px;
  position: relative;
}

/* AI Tabs */
.ai-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
}

.ai-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  border-radius: 980px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-secondary);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.ai-tab:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
}

.ai-tab.active {
  background: rgba(100, 210, 255, 0.1);
  border-color: rgba(100, 210, 255, 0.3);
  color: var(--color-cyan);
}

.ai-tab-icon {
  font-size: 18px;
}

.ai-tab-label {
  letter-spacing: -0.01em;
}

/* AI Description */
.ai-desc {
  text-align: center;
  font-size: 17px;
  line-height: 1.52;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  transition: opacity 0.3s;
}

/* AI Preview */
.ai-preview {
  max-width: 1000px;
  margin: 0 auto 64px;
}

.ai-screenshot {
  width: 100%;
  height: auto;
  aspect-ratio: 2272 / 1472;
  border-radius: 16px;
  background: var(--color-bg-elevated);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 100px rgba(100, 210, 255, 0.03);
  transition:
    opacity 0.35s cubic-bezier(0.25, 0.1, 0.25, 1),
    transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* AI Quote */
.ai-quote {
  text-align: center;
  padding: 40px 0 0;
}

.ai-quote blockquote {
  font-size: 24px;
  font-weight: 600;
  font-style: normal;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.4;
  letter-spacing: -0.02em;
  position: relative;
}

.ai-quote blockquote::before {
  content: none;
}

/* ============================================
   Section 4: Preview
   ============================================ */
.section-preview {
  padding: var(--section-spacing) 24px;
  position: relative;
}

.preview-showcase {
  max-width: 900px;
  margin: 0 auto;
}

.preview-screenshot {
  width: 100%;
  height: auto;
  aspect-ratio: 2272 / 1472;
  border-radius: 16px;
  background: var(--color-bg-elevated);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 80px rgba(100, 210, 255, 0.03);
}

/* ============================================
   Section 5: Themes — Gallery with circles
   ============================================ */
.section-themes {
  padding: var(--section-spacing) 24px;
  position: relative;
}

.theme-gallery {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.theme-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 10px 12px;
  border-radius: 16px;
  border: 2px solid transparent;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  min-width: 72px;
}

.theme-item:hover {
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

.theme-item.active {
  border-color: rgba(100, 210, 255, 0.4);
  background: rgba(100, 210, 255, 0.04);
}

.theme-gradient {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.theme-item:hover .theme-gradient {
  transform: scale(1.1);
}

.theme-item.active .theme-gradient {
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.3),
    0 0 0 2px rgba(100, 210, 255, 0.3);
}

.theme-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

.theme-item.active .theme-name {
  color: var(--color-cyan);
}

/* Theme Preview */
.theme-preview-window {
  max-width: 1000px;
  margin: 0 auto;
}

.theme-screenshot {
  width: 100%;
  height: auto;
  aspect-ratio: 2272 / 1472;
  border-radius: 16px;
  background: var(--color-bg-elevated);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 100px rgba(100, 210, 255, 0.03);
  transition:
    opacity 0.35s cubic-bezier(0.25, 0.1, 0.25, 1),
    transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ============================================
   Download CTA — Apple dramatic style
   ============================================ */
.download {
  padding: var(--section-spacing) 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  scroll-margin-top: 60px;
}

.download-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(
    ellipse at center,
    rgba(100, 210, 255, 0.05) 0%,
    rgba(255, 214, 10, 0.02) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.download-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 12px;
  position: relative;
}

.download-subtitle {
  font-size: 19px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  position: relative;
}

.download .btn {
  position: relative;
}

.download-meta {
  margin-top: 24px;
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.download-meta .separator {
  opacity: 0.3;
}

/* ============================================
   Focus Visible — Keyboard accessibility
   ============================================ */
.theme-item:focus-visible,
.ai-tab:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

.theme-item:focus-visible {
  background: rgba(255, 255, 255, 0.04);
}

/* ============================================
   Footer — Minimal
   ============================================ */
.footer {
  padding: 20px 24px;
  border-top: 0.5px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer-logo {
  width: 20px;
  height: 20px;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-github {
  color: var(--color-text-muted);
  transition: color 0.3s;
}

.footer-github:hover {
  color: var(--color-text);
}

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

/* ============================================
   Animations — Smooth, Apple-like
   ============================================ */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.8s cubic-bezier(0.25, 0.1, 0.25, 1),
    transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger */
.mode-cards .mode-card:nth-child(2) { transition-delay: 0.1s; }
.mode-cards .mode-card:nth-child(3) { transition-delay: 0.2s; }

.theme-gallery .theme-item:nth-child(2) { transition-delay: 0.03s; }
.theme-gallery .theme-item:nth-child(3) { transition-delay: 0.06s; }
.theme-gallery .theme-item:nth-child(4) { transition-delay: 0.09s; }
.theme-gallery .theme-item:nth-child(5) { transition-delay: 0.12s; }
.theme-gallery .theme-item:nth-child(6) { transition-delay: 0.15s; }
.theme-gallery .theme-item:nth-child(7) { transition-delay: 0.18s; }
.theme-gallery .theme-item:nth-child(8) { transition-delay: 0.21s; }
.theme-gallery .theme-item:nth-child(9) { transition-delay: 0.24s; }
.theme-gallery .theme-item:nth-child(10) { transition-delay: 0.27s; }

/* Hero entrance */
.hero-content {
  animation: hero-in 1s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

.hero-mockup {
  animation: hero-in 1s cubic-bezier(0.25, 0.1, 0.25, 1) 0.15s both;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(32px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ============================================
   Responsive
   ============================================ */

/* Tablet */
@media (max-width: 900px) {
  :root {
    --section-spacing: 120px;
  }

  .mode-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .bench-label {
    width: 100px;
    font-size: 12px;
  }

  .theme-gallery {
    gap: 8px;
  }

  .theme-item {
    min-width: 64px;
    padding: 8px 10px;
  }

  .theme-gradient {
    width: 40px;
    height: 40px;
  }
}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --nav-height: 44px;
    --section-spacing: 100px;
  }

  body {
    font-size: 15px;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.94);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column;
    padding: 8px 24px 20px;
    gap: 0;
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 0;
    font-size: 15px;
    border-bottom: 0.5px solid rgba(255, 255, 255, 0.04);
  }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-cta {
    text-align: center;
  }

  .nav-mobile-toggle {
    display: flex;
  }

  .hero {
    padding-top: calc(var(--nav-height) + 40px);
    padding-bottom: 60px;
  }

  .hero-title {
    letter-spacing: -0.03em;
  }

  .hero-subtitle {
    font-size: 17px;
  }

  .hero-screenshot {
    border-radius: 12px;
  }

  .section-speed, .section-memory, .section-ai, .section-preview, .section-themes {
    padding: var(--section-spacing) 16px;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .section-subtitle {
    font-size: 17px;
  }

  .mode-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .mode-card {
    padding: 28px 24px;
    border-radius: 16px;
  }

  .preview-screenshot {
    border-radius: 12px;
  }

  .bench-section {
    padding: 28px 20px;
    border-radius: 16px;
  }

  .bench-label {
    width: 80px;
    font-size: 11px;
  }

  .bench-row {
    gap: 8px;
  }

  .bench-bar-track {
    height: 28px;
  }

  .bench-value {
    font-size: 11px;
  }

  .mem-stats {
    gap: 24px;
    margin-bottom: 48px;
  }

  .mem-stat-divider {
    display: none;
  }

  .ai-tabs {
    gap: 6px;
  }

  .ai-tab {
    padding: 8px 16px;
    font-size: 14px;
  }

  .ai-desc {
    font-size: 15px;
  }

  .ai-screenshot {
    border-radius: 12px;
  }

  .theme-gallery {
    gap: 4px;
  }

  .theme-item {
    min-width: 56px;
    padding: 6px 8px;
  }

  .theme-gradient {
    width: 36px;
    height: 36px;
  }

  .theme-name {
    font-size: 10px;
  }

  .theme-screenshot {
    border-radius: 12px;
  }

  .download {
    padding: var(--section-spacing) 16px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}