/* ===== 全局变量与基础 ===== */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --accent: #06b6d4;
  --accent-light: #22d3ee;
  --bg: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.8);
  --bg-card-hover: rgba(51, 65, 85, 0.85);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 背景动画 ===== */
.bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-glow::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
  animation: glowPulse 8s ease-in-out infinite alternate;
}

@keyframes glowPulse {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2%, -1%) scale(1.05); }
  100% { transform: translate(-1%, 2%) scale(1.03); }
}

/* 网格背景 */
.grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* ===== 导航栏 ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.nav-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

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

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff !important;
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 600 !important;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
  transition: var(--transition);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== 共用容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.55);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--primary-light);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

/* ===== 首页 Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  z-index: 1;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-light);
  margin-bottom: 28px;
  animation: fadeInUp 0.6s ease;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-title .gradient {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 36px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  animation: fadeInUp 0.6s ease 0.35s both;
}

.hero-stat h3 {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeInRight 0.8s ease 0.2s both;
}

.hero-phone {
  width: 280px;
  height: 560px;
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.95));
  border: 2px solid rgba(99, 102, 241, 0.3);
  border-radius: 36px;
  position: relative;
  box-shadow:
    0 0 80px rgba(99, 102, 241, 0.2),
    inset 0 0 30px rgba(99, 102, 241, 0.05);
  overflow: hidden;
}

.hero-phone::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 24px;
  background: rgba(148, 163, 184, 0.2);
  border-radius: 20px;
}

.hero-phone-screen {
  position: absolute;
  top: 48px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.1), rgba(6, 182, 212, 0.05));
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
}

.phone-chat-bubble {
  padding: 12px 18px;
  border-radius: 16px;
  font-size: 0.8rem;
  max-width: 85%;
  animation: fadeInUp 0.5s ease both;
}

.phone-chat-bubble.left {
  background: rgba(51, 65, 85, 0.7);
  align-self: flex-start;
  margin-left: 16px;
  animation-delay: 0.2s;
}

.phone-chat-bubble.right {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  align-self: flex-end;
  margin-right: 16px;
  animation-delay: 0.5s;
}

.phone-chat-bubble.translated {
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  align-self: flex-start;
  margin-left: 16px;
  animation-delay: 0.8s;
  color: var(--accent-light);
}

/* 悬浮卡片 */
.float-card {
  position: absolute;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  animation: floatCard 6s ease-in-out infinite;
  z-index: 2;
}

.float-card.card-1 {
  top: 10%;
  right: -40px;
  animation-delay: 0s;
}

.float-card.card-2 {
  bottom: 20%;
  left: -50px;
  animation-delay: 2s;
}

.float-card .fc-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-bottom: 6px;
}

.float-card .fc-icon.blue { background: rgba(99, 102, 241, 0.2); }
.float-card .fc-icon.cyan { background: rgba(6, 182, 212, 0.2); }

.float-card .fc-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== 功能特性 ===== */
.features {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(6, 182, 212, 0.04));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  position: relative;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  position: relative;
}

/* ===== 平台支持 ===== */
.platforms {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

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

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: var(--transition);
}

.platform-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

.platform-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--bg-card-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin: 0 auto 16px;
}

.platform-card h4 {
  font-size: 1rem;
  font-weight: 600;
}

.platform-card span {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== CTA 区域 ===== */
.cta-section {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

.cta-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(6, 182, 212, 0.08));
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 24px;
  padding: 72px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.06);
  top: -100px;
  right: -100px;
}

.cta-card::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.06);
  bottom: -60px;
  left: -60px;
}

.cta-card h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}

.cta-card p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 32px;
  position: relative;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

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

/* ====== 下载页专属 ====== */
.download-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding-top: 100px;
  position: relative;
  z-index: 1;
}

.download-hero .hero-badge { margin-bottom: 24px; }

.download-cards {
  padding: 0 0 120px;
  position: relative;
  z-index: 1;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 28px;
  transition: var(--transition);
  position: relative;
}

.download-card.featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.08), var(--bg-card));
}

.download-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #fff;
}

.download-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(99, 102, 241, 0.3);
}

.dl-platform {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 20px;
}

.dl-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 20px;
}

.dl-icon.ios { background: linear-gradient(135deg, rgba(148, 163, 184, 0.15), rgba(148, 163, 184, 0.05)); }
.dl-icon.android { background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(99, 102, 241, 0.05)); }
.dl-icon.desktop { background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(6, 182, 212, 0.05)); }

.download-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.download-card .version {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.download-card .dl-features {
  list-style: none;
  margin-bottom: 24px;
  text-align: left;
}

.download-card .dl-features li {
  padding: 6px 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.download-card .dl-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
}

.dl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
}

.dl-btn:hover {
  box-shadow: 0 8px 28px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}

.download-extra {
  padding: 0 0 100px;
  position: relative;
  z-index: 1;
}

.extra-links {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.extra-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.extra-link:hover {
  color: var(--text);
  border-color: var(--primary-light);
}

.extra-link .el-icon {
  font-size: 1.5rem;
}

.extra-link .el-text {
  font-size: 0.85rem;
  font-weight: 500;
}

/* ====== 404页专属 ====== */
.page-404 {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.error-container {
  text-align: center;
  padding: 40px 24px;
}

.error-code {
  font-size: clamp(8rem, 15vw, 12rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -6px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  animation: glitchAnim 2s ease-in-out infinite alternate;
}

.error-orbits {
  position: relative;
  width: 200px;
  height: 200px;
  margin: -60px auto 20px;
}

.error-orbits .ring {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 50%;
  animation: ringSpin 8s linear infinite;
}

.error-orbits .ring:nth-child(2) {
  inset: 20px;
  border-color: rgba(6, 182, 212, 0.12);
  animation-direction: reverse;
  animation-duration: 12s;
}

.error-orbits .ring:nth-child(3) {
  inset: 40px;
  border-color: rgba(99, 102, 241, 0.1);
  animation-duration: 16s;
}

.error-orbits .dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--accent-light);
  border-radius: 50%;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 12px var(--accent-light);
}

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

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.error-desc {
  color: var(--text-muted);
  max-width: 440px;
  margin: 0 auto 36px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-phone { width: 200px; height: 400px; }
  .float-card { display: none; }

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

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 100px 40px;
    gap: 28px;
    transition: var(--transition);
    border-left: 1px solid var(--border);
  }
  .nav-links.open { right: 0; }
  .menu-toggle { display: flex; }

  .cta-card { padding: 48px 24px; }
  .hero-stats { gap: 24px; }
}

@media (max-width: 480px) {
  .hero-phone { width: 160px; height: 320px; }
  .platform-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: center; }
  .footer-inner { flex-direction: column; text-align: center; }
  .error-orbits { display: none; }
}