/* ============================================================
   0075 — SKY BLUE/CLOUD LIGHT — Download Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* === Sky Blue Palette === */
  --sky-50:  #f0f9ff;
  --sky-100: #e0f2fe;
  --sky-200: #bae6fd;
  --sky-300: #7dd3fc;
  --sky-400: #38bdf8;
  --sky-500: #0ea5e9;
  --sky-600: #0284c7;
  --sky-700: #0369a1;
  --sky-800: #075985;
  --sky-900: #0c4a6e;

  --cloud-white: #ffffff;
  --cloud-gray:  #f8fafc;
  --cloud-soft:  #f1f5f9;

  --white:       #ffffff;
  --gray-50:     #f8fafc;
  --gray-100:    #f1f5f9;
  --gray-200:    #e2e8f0;
  --gray-300:    #cbd5e1;
  --gray-400:    #94a3b8;
  --gray-500:    #64748b;
  --gray-600:    #475569;
  --gray-700:    #334155;
  --gray-800:    #1e293b;
  --gray-900:    #0f172a;

  --primary:        var(--sky-500);
  --primary-hover:  var(--sky-600);
  --primary-light:  var(--sky-100);
  --primary-dark:   var(--sky-700);
  --accent:         var(--sky-400);
  --accent-hover:   var(--sky-500);

  --bg-body:        var(--cloud-gray);
  --bg-card:        var(--white);
  --bg-section:     var(--cloud-soft);
  --text-primary:   var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted:     var(--gray-400);
  --border:         rgba(14, 165, 233, 0.10);
  --border-hover:   rgba(14, 165, 233, 0.28);
  --shadow-sm:      0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md:      0 4px 12px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:      0 12px 28px rgba(0,0,0,0.07), 0 4px 10px rgba(0,0,0,0.04);
  --shadow-xl:      0 24px 40px rgba(0,0,0,0.09), 0 10px 16px rgba(0,0,0,0.04);
  --shadow-sky:     0 10px 35px rgba(14, 165, 233, 0.18);
  --shadow-float:   0 20px 50px rgba(14, 165, 233, 0.12);

  --radius-sm:     10px;
  --radius-md:     16px;
  --radius-lg:     24px;
  --radius-xl:     32px;
  --radius-full:   9999px;

  --transition:    0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --bounce:        0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans SC', 'Inter', system-ui, -apple-system, sans-serif;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 30%, #f1f5f9 100%);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; font-family: inherit; }
input, textarea { font-family: inherit; }

/* === TYPOGRAPHY === */
.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-400);
  font-weight: 400;
  max-width: 640px;
  margin: 0 auto;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1.1rem;
  background: linear-gradient(135deg, var(--sky-100), var(--sky-50));
  color: var(--sky-600);
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
  border: 1px solid rgba(14,165,233,0.15);
}

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0.875rem 0;
  transition: all var(--transition);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(14,165,233,0.08);
  box-shadow: var(--shadow-md);
  padding: 0.625rem 0;
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--sky-700);
  letter-spacing: -0.01em;
}
.nav-logo i { font-size: 1.5rem; color: var(--sky-500); }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-700);
  position: relative;
  transition: color var(--transition);
  padding: 0.25rem 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2.5px;
  background: var(--sky-500);
  border-radius: 2px;
  transition: width var(--bounce);
}
.nav-links a:hover { color: var(--sky-600); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--sky-600); font-weight: 600; }
.nav-links a.active::after { width: 100%; }
.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  background: linear-gradient(135deg, var(--sky-500), var(--sky-600));
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--bounce);
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.3);
}
.nav-btn:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 8px 24px rgba(14, 165, 233, 0.4); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; z-index: 1001; }
.nav-toggle span { display: block; width: 26px; height: 2.5px; background: var(--gray-700); border-radius: 2px; transition: all var(--bounce); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .nav-links { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: #fff; flex-direction: column; justify-content: center; gap: 2rem; transition: right var(--transition); box-shadow: var(--shadow-xl); border-radius: var(--radius-lg) 0 0 var(--radius-lg); }
  .nav-links.open { right: 0; }
  .nav-toggle { display: flex; }
  .section-title { font-size: 1.85rem; }
}

/* === CLOUD DECORATIONS === */
.cloud-decor {
  position: absolute;
  background: var(--white);
  border-radius: 50%;
  opacity: 0.55;
  pointer-events: none;
  animation: cloud-drift 20s ease-in-out infinite;
}
.cloud-decor::before,
.cloud-decor::after {
  content: '';
  position: absolute;
  background: inherit;
  border-radius: 50%;
}
.cloud-decor:nth-child(1) { width:180px; height:60px; top:12%; left:5%; animation-delay:0s; }
.cloud-decor:nth-child(2) { width:140px; height:48px; top:25%; right:8%; animation-delay:-7s; }
.cloud-decor:nth-child(3) { width:200px; height:66px; bottom:20%; left:15%; animation-delay:-13s; }
@keyframes cloud-drift {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(30px); }
  50% { transform: translateX(-15px); }
  75% { transform: translateX(20px); }
}

/* === HERO === */
.hero-section {
  padding: 8rem 1.5rem 5rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 40%, #e0f2fe 80%, #f8fafc 100%);
  min-height: 85vh;
  display: flex;
  align-items: center;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.18;
  color: var(--gray-900);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--sky-500), var(--sky-400), var(--sky-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 1.1rem;
  color: var(--gray-500);
  margin-bottom: 2rem;
  max-width: 520px;
  line-height: 1.75;
}
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 2.2rem;
  background: linear-gradient(135deg, var(--sky-500), var(--sky-600));
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  transition: all var(--bounce);
  box-shadow: 0 8px 28px rgba(14, 165, 233, 0.32);
}
.btn-primary:hover { transform: translateY(-3px) scale(1.04); box-shadow: 0 14px 36px rgba(14, 165, 233, 0.45); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 2.2rem;
  border: 2px solid var(--sky-400);
  color: var(--sky-600);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  transition: all var(--bounce);
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(4px);
}
.btn-outline:hover { background: var(--sky-500); color: #fff; border-color: var(--sky-500); transform: translateY(-3px); }
.btn-outline-alt {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border: 2px solid var(--gray-200);
  color: var(--gray-600);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--bounce);
  background: transparent;
}
.btn-outline-alt:hover { border-color: var(--sky-400); color: var(--sky-600); background: var(--sky-50); transform: translateY(-2px); }
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.hero-visual img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-float);
  animation: float-bounce 6s ease-in-out infinite;
}
@keyframes float-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}
.hero-badge {
  position: absolute;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-800);
  animation: badge-pop 5s ease-in-out infinite;
}
@keyframes badge-pop {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}
@media (max-width: 768px) {
  .hero-section { padding: 7rem 1.25rem 3rem; min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; text-align: center; }
  .hero-content p { margin: 0 auto 2rem; }
  .hero-buttons { justify-content: center; }
  .hero-visual { order: -1; }
}

/* === FEATURES === */
.features-section {
  padding: 5rem 1.5rem;
  background: var(--white);
  position: relative;
}
.features-section .section-header { text-align: center; margin-bottom: 3.5rem; }
.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.25rem 1.75rem;
  transition: all var(--bounce);
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.feature-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-sky); transform: translateY(-6px) scale(1.02); }
.feature-icon-wrap {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.6rem;
  background: linear-gradient(135deg, var(--sky-50), var(--sky-100));
  color: var(--sky-500);
  box-shadow: 0 0 0 8px rgba(14,165,233,0.06);
  transition: all var(--bounce);
}
.feature-card:hover .feature-icon-wrap { transform: rotateY(180deg); box-shadow: 0 0 0 14px rgba(14,165,233,0.12); }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--gray-900); }
.feature-card p { font-size: 0.9rem; color: var(--gray-400); line-height: 1.65; }
@media (max-width: 768px) { .features-grid { grid-template-columns: 1fr; } }

/* === STATS === */
.stats-section {
  padding: 5rem 1.5rem;
  background: linear-gradient(180deg, var(--sky-50), var(--white), var(--sky-50));
  position: relative;
}
.stats-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.stat-item {
  text-align: center;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem 1.25rem;
  box-shadow: var(--shadow-md);
  transition: all var(--bounce);
  border: 1px solid transparent;
}
.stat-item:hover { border-color: var(--sky-200); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.stat-number { font-size: 2.6rem; font-weight: 900; color: var(--sky-500); line-height: 1.1; }
.stat-suffix { font-size: 1.5rem; font-weight: 700; color: var(--sky-500); }
.stat-label { font-size: 0.9rem; color: var(--gray-400); margin-top: 0.375rem; font-weight: 500; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2,1fr); gap: 1.5rem; } }

/* === TESTIMONIALS === */
.testimonials-section {
  padding: 5rem 1.5rem;
  background: var(--white);
}
.testimonials-section .section-header { text-align: center; margin-bottom: 3.5rem; }
.testimonials-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.testimonial-card {
  background: linear-gradient(180deg, var(--white) 0%, var(--sky-50) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem 1.75rem;
  transition: all var(--bounce);
}
.testimonial-card:hover { border-color: var(--sky-200); box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.testimonial-stars { color: #f59e0b; font-size: 0.875rem; margin-bottom: 0.875rem; display: flex; gap: 3px; }
.testimonial-text { font-size: 0.9rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 1.25rem; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.testimonial-author img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; border: 3px solid var(--sky-200); }
.testimonial-author h4 { font-size: 0.9375rem; font-weight: 600; color: var(--gray-900); }
.testimonial-author span { font-size: 0.8rem; color: var(--gray-400); }
@media (max-width: 768px) { .testimonials-grid { grid-template-columns: 1fr; } }

/* === FAQ === */
.faq-section {
  padding: 5rem 1.5rem;
  background: var(--bg-body);
}
.faq-section .section-header { text-align: center; margin-bottom: 3rem; }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 0.875rem;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--sky-200); box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--gray-800);
  text-align: left;
  gap: 1rem;
  transition: background var(--transition);
}
.faq-item.active .faq-question { background: var(--sky-50); }
.faq-question i { color: var(--sky-500); transition: transform var(--bounce); font-size: 0.85rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.active .faq-answer { max-height: 320px; }
.faq-answer p { padding: 0 1.5rem 1.25rem; font-size: 0.9rem; color: var(--gray-500); line-height: 1.7; }

/* === CTA === */
.cta-section {
  padding: 5rem 1.5rem;
  background: linear-gradient(135deg, var(--sky-600), var(--sky-700), var(--sky-800));
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 60%, rgba(255,255,255,0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 30%, rgba(56,189,248,0.15) 0%, transparent 50%);
  pointer-events: none;
}
.cta-inner { max-width: 700px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.cta-inner h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 1rem; }
.cta-inner p { font-size: 1.05rem; color: rgba(255,255,255,0.85); margin-bottom: 2rem; line-height: 1.65; }
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.75rem;
  background: #fff;
  color: var(--sky-700);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1.05rem;
  transition: all var(--bounce);
  box-shadow: 0 10px 32px rgba(0,0,0,0.2);
}
.btn-cta:hover { transform: translateY(-3px) scale(1.04); box-shadow: 0 16px 40px rgba(0,0,0,0.28); }

/* === FOOTER === */
.site-footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 3rem 1.5rem 1.5rem;
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
}
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 1.25rem; }
.footer-col p, .footer-col a { font-size: 0.9rem; color: var(--gray-400); line-height: 1.8; transition: color var(--transition); display: block; }
.footer-col a:hover { color: var(--sky-400); }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-500);
}
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }

/* === BACK TO TOP === */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sky-500), var(--sky-600));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 8px 24px rgba(14,165,233,0.38);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.8);
  transition: all var(--bounce);
  z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.back-to-top:hover { transform: translateY(-4px) scale(1.08); }

/* === ABOUT PAGE === */
.about-hero { padding: 7rem 1.5rem 3rem; background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 60%, #f8fafc 100%); text-align: center; }
.about-hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; color: var(--gray-900); }
.about-hero p { color: var(--gray-400); margin-top: 0.75rem; font-size: 1.05rem; }
.about-story { max-width: 900px; margin: 0 auto; padding: 4rem 1.5rem; }
.about-story h2 { font-size: 1.75rem; font-weight: 800; margin-bottom: 1rem; color: var(--gray-900); }
.about-story p { color: var(--gray-500); line-height: 1.85; margin-bottom: 1.25rem; font-size: 1rem; }
.about-values { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem 4rem; display: grid; grid-template-columns: repeat(3,1fr); gap: 1.75rem; }
.about-value-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 2rem; text-align: center; transition: all var(--bounce); box-shadow: var(--shadow-sm); }
.about-value-card:hover { border-color: var(--sky-200); box-shadow: var(--shadow-sky); transform: translateY(-5px) scale(1.02); }
.about-value-card i { font-size: 2rem; color: var(--sky-500); margin-bottom: 0.875rem; }
.about-value-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.about-value-card p { font-size: 0.875rem; color: var(--gray-400); line-height: 1.6; }
@media (max-width:768px) { .about-values { grid-template-columns: 1fr; } }

/* === DOWNLOAD PAGE === */
.download-hero { padding: 7rem 1.5rem 3rem; background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 60%, #f8fafc 100%); text-align: center; }
.download-hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; color: var(--gray-900); }
.download-hero p { color: var(--gray-400); margin-top: 0.75rem; font-size: 1.05rem; }
.download-cards { max-width: 1000px; margin: 0 auto; padding: 0 1.5rem 2rem; display: grid; grid-template-columns: repeat(2,1fr); gap: 2rem; }
.download-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  text-align: center;
  transition: all var(--bounce);
  box-shadow: var(--shadow-sm);
}
.download-card:hover { border-color: var(--sky-400); box-shadow: var(--shadow-float); transform: translateY(-6px); }
.download-card.featured {
  border-color: var(--sky-500);
  background: linear-gradient(180deg, var(--sky-50) 0%, var(--white) 50%);
  position: relative;
}
.download-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 16px;
  right: 16px;
  background: linear-gradient(135deg, var(--sky-500), var(--sky-600));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
}
.download-card i { font-size: 3.2rem; color: var(--sky-500); margin-bottom: 1rem; }
.download-card h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: 0.5rem; }
.download-card p { font-size: 0.875rem; color: var(--gray-400); margin-bottom: 1.75rem; line-height: 1.6; }
.download-install { max-width: 800px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }
.download-install h2 { font-size: 1.75rem; font-weight: 800; margin-bottom: 1.5rem; text-align: center; }
.download-steps { display: grid; gap: 1rem; }
.download-step { display: flex; gap: 1.25rem; align-items: flex-start; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.375rem 1.5rem; transition: all var(--bounce); }
.download-step:hover { border-color: var(--sky-200); box-shadow: var(--shadow-md); }
.download-step .step-num { width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--sky-500), var(--sky-600)); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.1rem; flex-shrink: 0; box-shadow: 0 4px 14px rgba(14,165,233,0.28); }
.download-step h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.25rem; }
.download-step p { font-size: 0.875rem; color: var(--gray-400); }
@media (max-width:768px) { .download-cards { grid-template-columns: 1fr; } }

/* === CONTACT PAGE === */
.contact-hero { padding: 7rem 1.5rem 3rem; background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 60%, #f8fafc 100%); text-align: center; }
.contact-hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; color: var(--gray-900); }
.contact-hero p { color: var(--gray-400); margin-top: 0.75rem; font-size: 1.05rem; }
.contact-content { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem 4rem; display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-form-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 2.5rem; box-shadow: var(--shadow-sm); }
.contact-form-card h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--gray-700); margin-bottom: 0.4rem; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.8rem 1.1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  transition: all var(--transition);
  background: var(--gray-50);
  color: var(--gray-800);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--sky-500); box-shadow: 0 0 0 4px rgba(14,165,233,0.08); background: #fff; }
.form-group textarea { min-height: 130px; resize: vertical; }
.form-success { display: none; padding: 1rem; background: var(--sky-100); border: 1px solid var(--sky-300); border-radius: var(--radius-sm); color: var(--sky-800); font-weight: 500; margin-top: 1rem; }
.form-success.show { display: block; }
.form-error { padding: 0.75rem 1rem; background: #fef2f2; border: 1px solid #fecaca; border-radius: var(--radius-sm); color: #991b1b; font-size: 0.9rem; margin-bottom: 1rem; }
.contact-info-card { background: linear-gradient(180deg, var(--sky-50), var(--white)); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 2.5rem; height: fit-content; box-shadow: var(--shadow-sm); }
.contact-info-card h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; }
.contact-info-item { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; padding: 1rem; border-radius: var(--radius-md); transition: all var(--transition); }
.contact-info-item:hover { background: var(--white); box-shadow: var(--shadow-sm); }
.contact-info-item i { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--sky-100), var(--sky-200)); color: var(--sky-600); display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; }
.contact-info-item h4 { font-size: 0.9375rem; font-weight: 600; color: var(--gray-900); margin-bottom: 0.15rem; }
.contact-info-item span { font-size: 0.875rem; color: var(--gray-400); }
@media (max-width:768px) { .contact-content { grid-template-columns: 1fr; } }

/* === SCROLL REVEAL === */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.reveal.visible { opacity: 1; transform: translateY(0); }