/* ============================================================
   NurixWave landing — shared stylesheet for all locales
   (ru: /index.html, en: /en/index.html, uz: /uz/index.html)
   Единый CSS гарантирует идентичную вёрстку во всех языках.
   ============================================================ */

/* ===== CSS Custom Properties ===== */
:root {
  --bg-primary: #0A0E27;
  --bg-secondary: #151B3D;
  --bg-tertiary: #1E2548;
  --bg-card: #1a2040;
  --text-primary: #FFFFFF;
  --text-secondary: #B0B8D0;
  --text-muted: #6B7280;
  --accent-blue: #00D4FF;
  --accent-purple: #B026FF;
  --accent-pink: #FF00E5;
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 212, 255, 0.25);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --gradient-main: linear-gradient(135deg, #00D4FF 0%, #B026FF 100%);
  --gradient-bg: linear-gradient(180deg, #0A0E27 0%, #0d1230 100%);
}

[data-theme="light"] {
  --bg-primary: #F0F4FF;
  --bg-secondary: #E4ECFF;
  --bg-tertiary: #D8E4FF;
  --bg-card: #FFFFFF;
  --text-primary: #0A0E27;
  --text-secondary: #3B4A6B;
  --text-muted: #7B8DB0;
  --accent-blue: #006ECC;
  --accent-purple: #7B12CC;
  --accent-pink: #CC00B8;
  --border: rgba(10, 14, 39, 0.1);
  --border-accent: rgba(0, 110, 204, 0.3);
  --shadow-glow: 0 0 30px rgba(0, 110, 204, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
  --gradient-main: linear-gradient(135deg, #006ECC 0%, #7B12CC 100%);
  --gradient-bg: linear-gradient(180deg, #F0F4FF 0%, #E4ECFF 100%);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

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

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

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.5); }

/* ===== Layout ===== */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  min-width: 0;
}

section {
  padding: 96px 0;
}

/* ===== Theme Toggle ===== */
.theme-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: border-color 0.2s, box-shadow 0.2s;
  color: var(--text-secondary);
  font-family: inherit;
}

.theme-btn:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.theme-btn .theme-label {
  font-size: 13px;
  font-weight: 500;
}

[data-theme="dark"] .icon-sun { display: inline; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: inline; }

/* ===== Header / Nav ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.3s ease;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

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

.btn-nav {
  background: var(--gradient-main);
  color: #fff;
  padding: 9px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  transition: opacity 0.2s, transform 0.2s;
  white-space: nowrap;
}

.btn-nav:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, opacity 0.2s, box-shadow 0.2s;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

/* ===== Section Headers ===== */
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-blue);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  padding: 4px 14px;
  margin-bottom: 20px;
}

[data-theme="light"] .section-tag {
  background: rgba(0, 110, 204, 0.08);
  border-color: rgba(0, 110, 204, 0.2);
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
}

.section-head {
  margin-bottom: 56px;
}

.section-head.center {
  text-align: center;
}

.section-head.center .section-sub {
  margin: 0 auto;
}

/* ===== Gradient Text ===== */
.grad {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Hero ===== */
#hero {
  padding: 160px 0 96px;
  background: var(--gradient-bg);
  position: relative;
  overflow: hidden;
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.35;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #00D4FF 0%, transparent 70%);
  top: -200px;
  right: -150px;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #B026FF 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
}

[data-theme="light"] .orb-1 {
  opacity: 0.15;
}

[data-theme="light"] .orb-2 {
  opacity: 0.12;
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: 50px;
  padding: 6px 16px 6px 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

h1 {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.08;
  margin-bottom: 24px;
  max-width: 820px;
}

.hero-desc {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 64px;
}

.hero-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.hero-platforms span {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-right: 4px;
}

.platform-chip {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 4px 12px;
  transition: border-color 0.2s, color 0.2s;
}

.platform-chip:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

/* ===== Stats bar ===== */
.stats-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.stats-bar section {
  padding: 32px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 0 24px;
  border-right: 1px solid var(--border);
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Features ===== */
#features {
  background: var(--bg-primary);
}

.features-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.feature-card.wide {
  grid-column: span 2;
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.platforms-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.plt-tag {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-blue);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 6px;
  padding: 3px 10px;
}

[data-theme="light"] .plt-tag {
  color: var(--accent-blue);
  background: rgba(0, 110, 204, 0.07);
  border-color: rgba(0, 110, 204, 0.2);
}

/* ===== Why Section ===== */
#why {
  background: var(--bg-secondary);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.why-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  transition: border-color 0.2s, transform 0.2s;
}

[data-theme="light"] .why-card {
  background: var(--bg-card);
}

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

.why-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.15);
}

[data-theme="light"] .why-icon {
  background: rgba(0, 110, 204, 0.08);
  border-color: rgba(0, 110, 204, 0.15);
}

.why-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.why-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.compare-table {
  margin-top: 48px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  max-width: 100%;
}

.compare-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.compare-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  border-bottom: 1px solid var(--border);
}

.compare-row:last-child {
  border-bottom: none;
}

.compare-row.header {
  background: var(--bg-tertiary);
}

.compare-cell {
  padding: 14px 20px;
  font-size: 14px;
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.compare-cell:last-child {
  border-right: none;
}

.compare-row.header .compare-cell {
  font-weight: 700;
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.compare-cell.positive { color: #10B981; font-weight: 600; }
.compare-cell.negative { color: #EF4444; }

/* ===== Audience ===== */
#audience {
  background: var(--bg-primary);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.audience-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}

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

.audience-emoji {
  font-size: 36px;
  margin-bottom: 16px;
}

.audience-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.audience-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Ecosystem ===== */
#ecosystem {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.ecosystem-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.ecosystem-text .section-sub {
  max-width: 100%;
}

.roadmap {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.roadmap li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  color: var(--text-secondary);
}

.roadmap-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: border-color 0.2s;
}

.roadmap li:hover .roadmap-icon {
  border-color: var(--border-accent);
}

.roadmap li span {
  padding-top: 8px;
}

.ecosystem-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-accent);
  border-radius: 20px;
  padding: 36px;
  box-shadow: var(--shadow-glow);
}

[data-theme="light"] .ecosystem-card {
  background: var(--bg-card);
}

.eco-card-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.eco-card-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.eco-products {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.eco-product {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  transition: border-color 0.2s;
  min-width: 0;
}

[data-theme="light"] .eco-product {
  background: var(--bg-secondary);
}

.eco-product:hover {
  border-color: var(--border-accent);
}

.eco-product-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.eco-product > div {
  min-width: 0;
  flex: 1;
}

.eco-badge {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  letter-spacing: 0.5px;
}

.badge-live {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-soon {
  background: rgba(245, 158, 11, 0.12);
  color: #F59E0B;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

/* ===== Developers ===== */
#developers {
  background: var(--bg-primary);
}

.dev-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.dev-roles {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.dev-role {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.2s, transform 0.2s;
}

.dev-role:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.dev-role-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.dev-role h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.dev-role p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.55;
}

.dev-cta-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-glow);
}

.dev-cta-box h3 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.dev-cta-box p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.65;
}

.dev-cta-box .btn-primary {
  width: 100%;
  justify-content: center;
}

/* ===== Contact ===== */
#contact {
  background: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s, transform 0.2s;
}

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

.contact-icon {
  font-size: 28px;
}

.contact-card h3 {
  font-size: 16px;
  font-weight: 700;
}

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

.contact-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-blue);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  transition: opacity 0.2s;
}

.contact-link:hover { opacity: 0.75; }

/* ===== Footer ===== */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  font-size: 18px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 28px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

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

/* ===== How it works ===== */
#how {
  background: var(--bg-secondary);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
}

.step {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  position: relative;
  transition: border-color 0.2s, transform 0.2s;
}

.step:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-main);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: border-color .2s; }
.faq-item[open] { border-color: var(--border-accent); }
.faq-item summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 1.05rem; color: var(--text-primary); display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--accent-blue); font-size: 1.6rem; font-weight: 400; line-height: 1; flex-shrink: 0; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 24px 22px; color: var(--text-secondary); line-height: 1.7; }
.faq-item .faq-answer a { color: var(--accent-blue); }

/* ===== Hamburger Menu ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

.mobile-menu {
  display: none;
}

/* ===== Animations ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-up {
  animation: fadeUp 0.6s ease forwards;
}

.fade-up-2 { animation-delay: 0.1s; opacity: 0; }
.fade-up-3 { animation-delay: 0.2s; opacity: 0; }
.fade-up-4 { animation-delay: 0.3s; opacity: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-layout {
    grid-template-columns: 1fr;
  }

  .feature-card.wide {
    grid-column: span 1;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 20px;
  }

  .stat-item:nth-child(2n) {
    border-bottom: none;
  }
}

@media (max-width: 768px) {
  section { padding: 64px 0; }

  #hero { padding: 120px 0 64px; }

  .nav-links { display: none; }

  .btn-nav { display: none; }

  .hamburger { display: flex; }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    z-index: 99;
    flex-direction: column;
    gap: 16px;
  }

  .mobile-menu.open { display: flex; }

  .mobile-menu a {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
  }

  .mobile-menu .btn-nav {
    display: inline-flex;
    text-align: center;
    justify-content: center;
    margin-top: 8px;
  }

  h1 { font-size: 38px; letter-spacing: -1px; }

  .why-grid { grid-template-columns: 1fr; }

  .ecosystem-layout { grid-template-columns: 1fr; gap: 40px; }

  .dev-layout { grid-template-columns: 1fr; }

  .contact-grid { grid-template-columns: 1fr; }

  .steps { grid-template-columns: 1fr; }

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

  .compare-row {
    grid-template-columns: 1fr 1fr;
  }

  .compare-row .compare-cell:first-child {
    grid-column: span 2;
    border-right: none;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
  }

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

  .footer-links {
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .features-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .audience-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .hide-in-mobile { display: none; }

  .ecosystem-card {
    padding: 20px 16px;
  }

  .eco-product {
    flex-wrap: wrap;
    gap: 8px;
  }

  .eco-badge {
    margin-left: 0;
  }

  .dev-cta-box {
    padding: 24px 16px;
  }
}