:root {
  --bg-primary: #08080f;
  --bg-secondary: #0d0d16;
  --bg-card: #111120;
  --bg-card-hover: #181830;
  --bg-elevated: #14142a;
  --border: #1c1c34;
  --border-light: #282850;
  --text-primary: #e6e6f0;
  --text-secondary: #a8a8c0;
  --text-muted: #6a6a88;
  --accent: #4f46e5;
  --accent-light: #818cf8;
  --accent-glow: rgba(79,70,229,0.35);
  --accent-strong: rgba(79,70,229,0.6);
  --gradient-1: linear-gradient(135deg,#4f46e5 0%,#7c3aed 100%);
  --gradient-2: linear-gradient(135deg,#3730a3 0%,#4f46e5 50%,#7c3aed 100%);
  --green: #10b981;
  --green-glow: rgba(16,185,129,0.3);
  --yellow: #f59e0b;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.5);
  --shadow: 0 4px 20px rgba(0,0,0,0.6);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.7);
  --shadow-glow: 0 0 30px var(--accent-glow);
  --transition-fast: 0.2s ease;
  --transition: 0.3s ease;
  --max-width: 1280px;
  --header-height: 68px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

body::before {
  content: '';
  position: fixed;
  top: -30%;
  left: -20%;
  width: 140%;
  height: 140%;
  background:
    radial-gradient(ellipse at 30% 15%, rgba(79,70,229,0.07) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(124,58,237,0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(16,185,129,0.03) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8,8,15,0.85);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background var(--transition);
}

header .header-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  z-index: 1001;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px var(--accent-glow);
  overflow: hidden;
}

.logo-icon svg {
  width: 26px;
  height: 26px;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.logo-text span {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Nav ── */
nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition-fast);
}

nav a:hover { color: var(--text-primary); }
nav a:hover::after { transform: translateX(-50%) scaleX(1); }

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: var(--gradient-2);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn-nav-cta:hover {
  box-shadow: 0 6px 28px var(--accent-strong);
  transform: translateY(-2px);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* ── Layout ── */
main { position: relative; z-index: 1; }

.breadcrumb-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  list-style: none;
}

.breadcrumb li { display: inline-flex; align-items: center; gap: 6px; }

.breadcrumb li+li::before {
  content: '›';
  color: var(--text-muted);
  font-size: 1rem;
  margin-right: 2px;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb .current { color: var(--text-secondary); font-weight: 500; }

section {
  padding: 70px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
  background: rgba(79,70,229,0.1);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 14px;
  border: 1px solid rgba(79,70,229,0.2);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 640px;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header .section-title { margin-bottom: 8px; }
.section-header .section-subtitle { margin-left: auto; margin-right: auto; }

/* ── Hero ── */
.hero-section {
  padding-top: 60px;
  padding-bottom: 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  min-height: calc(100vh - var(--header-height) - 60px);
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.25);
  padding: 7px 16px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--green);
  width: fit-content;
  animation: pulse-badge 2.5s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%,100% { box-shadow: 0 0 0 0 var(--green-glow); }
  50% { box-shadow: 0 0 0 12px transparent; }
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: blink-dot 1.5s ease-in-out infinite;
}

@keyframes blink-dot {
  0%,100% { opacity: 1; }
  50% { opacity: 0.3; }
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.03em;
  color: #fff;
  margin: 0;
}

h1 .highlight {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 8px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: var(--gradient-2);
  color: #fff;
  box-shadow: 0 6px 24px var(--accent-glow);
  transition: all var(--transition);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.btn-primary:hover {
  box-shadow: 0 10px 36px var(--accent-strong);
  transform: translateY(-3px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: 1.5px solid var(--border-light);
  background: transparent;
  color: var(--text-primary);
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(79,70,229,0.06);
  box-shadow: 0 0 20px rgba(79,70,229,0.15);
}

.hero-rating {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.hero-stars {
  color: var(--yellow);
  font-size: 1.05rem;
  letter-spacing: 2px;
}

.hero-rating strong { color: #fff; font-size: 1.1rem; }

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-glow {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,70,229,0.3) 0%, transparent 70%);
  position: absolute;
  filter: blur(60px);
  animation: float-glow 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes float-glow {
  0%,100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(20px,-20px) scale(1.1); }
  66% { transform: translate(-15px,15px) scale(0.95); }
}

.hero-mockup {
  width: 260px;
  height: 340px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(79,70,229,0.12);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.hero-mockup .mock-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius);
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 0 30px var(--accent-glow);
}

.hero-mockup .mock-text {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-align: center;
  line-height: 1.5;
}

.hero-mockup .mock-bar {
  width: 60%;
  height: 4px;
  border-radius: 2px;
  background: var(--gradient-1);
  animation: pulse-bar 2s ease-in-out infinite;
}

@keyframes pulse-bar {
  0%,100% { opacity: 0.6; width: 60%; }
  50% { opacity: 1; width: 80%; }
}

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(79,70,229,0.08) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(79,70,229,0.2), 0 0 0 1px rgba(79,70,229,0.3) inset;
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

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

.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius);
  background: rgba(79,70,229,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

.feature-card:hover .feature-icon {
  background: rgba(79,70,229,0.25);
  box-shadow: 0 0 20px var(--accent-glow);
}

.feature-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* ── Use Cases ── */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.usecase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}

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

.usecase-emoji {
  font-size: 2.8rem;
  margin-bottom: 12px;
  display: block;
  transition: transform var(--transition);
}

.usecase-card:hover .usecase-emoji { transform: scale(1.15); }

.usecase-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.usecase-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ── Highlight Features ── */
.highlight-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.hl-feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}

.hl-feature-item:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(79,70,229,0.15);
  background: var(--bg-card-hover);
}

.hl-check {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(16,185,129,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  color: var(--green);
}

.hl-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.hl-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ── Testimonials ── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  transition: all var(--transition);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 14px;
  right: 20px;
  font-size: 4rem;
  color: rgba(79,70,229,0.12);
  font-family: Georgia, serif;
  line-height: 1;
  pointer-events: none;
}

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

.testimonial-stars {
  color: var(--yellow);
  font-size: 0.9rem;
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.testimonial-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.testimonial-author { display: flex; align-items: center; gap: 10px; }

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  flex-shrink: 0;
}

.testimonial-author strong { display: block; font-size: 0.88rem; color: var(--text-primary); }
.testimonial-author span { font-size: 0.75rem; color: var(--text-muted); }

/* ── News ── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

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

.news-card-image {
  height: 140px;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.news-card:hover .news-card-image { background: rgba(79,70,229,0.08); }

.news-card-body {
  padding: 18px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.news-card-date { font-size: 0.75rem; color: var(--text-muted); letter-spacing: 0.03em; }
.news-card-body h3 { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); line-height: 1.4; }
.news-card-body p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.5; flex: 1; }

.news-card-link {
  font-size: 0.82rem;
  color: var(--accent-light);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
  align-self: flex-start;
}

.news-card-link:hover { color: #fff; text-decoration: underline; }

/* ── FAQ ── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover { border-color: var(--border-light); }

.faq-item[open] {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(79,70,229,0.15);
  background: var(--bg-card-hover);
}

.faq-item summary {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  user-select: none;
  transition: color var(--transition-fast);
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { display: none; }

.faq-item summary .faq-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(79,70,229,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  font-size: 0.7rem;
  color: var(--accent-light);
}

.faq-item[open] summary .faq-arrow {
  background: var(--accent);
  color: #fff;
  transform: rotate(180deg);
}

.faq-item[open] summary { color: #fff; }

.faq-body {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease, padding 0.4s ease;
}

.faq-item[open] .faq-body {
  max-height: 2000px;
  opacity: 1;
  padding: 0 24px 22px;
}

.faq-body ol {
  list-style: none;
  counter-reset: faq-step;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-body ol li {
  counter-increment: faq-step;
  position: relative;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 18px 18px 18px 52px;
  border-left: 3px solid var(--accent);
  transition: all var(--transition);
  line-height: 1.7;
}

.faq-body ol li::before {
  content: counter(faq-step);
  position: absolute;
  left: 12px;
  top: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: #fff;
  font-weight: 700;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.faq-body ol li strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 4px;
  font-weight: 700;
}

.faq-body ol li .step-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Specs ── */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.spec-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: all var(--transition);
}

.spec-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.spec-value {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 4px;
}

.spec-label { font-size: 0.8rem; color: var(--text-muted); letter-spacing: 0.03em; }

/* ── Security ── */
.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.security-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all var(--transition);
}

.security-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.security-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(16,185,129,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  color: var(--green);
}

.security-info h3 { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.security-info p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }

/* ── CTA Banner ── */
.cta-banner {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 44px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(79,70,229,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
  padding: 16px 36px;
}

/* ── Footer ── */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 50px 24px 30px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 30px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.footer-col ul li a:hover { color: var(--accent-light); }
.footer-col p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

.footer-bottom {
  max-width: var(--max-width);
  margin: 30px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom a { color: var(--text-muted); text-decoration: none; transition: color var(--transition-fast); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-section { grid-template-columns: 1fr; text-align: center; gap: 30px; min-height: auto; }
  .hero-content { align-items: center; }
  .hero-desc { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-rating { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-glow { width: 180px; height: 180px; }
  .hero-mockup { width: 200px; height: 260px; }
  .highlight-features { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.7rem; }
  nav { gap: 16px; }
  nav a { font-size: 0.82rem; }
}

@media (max-width: 768px) {
  .header-inner { padding: 0 16px; }
  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 80px 28px 30px;
    gap: 22px;
    transition: right var(--transition);
    z-index: 1000;
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }
  nav.active { right: 0; }
  nav a { font-size: 1rem; }
  .mobile-menu-toggle { display: flex; }
  .features-grid, .usecases-grid, .testimonials-grid, .news-grid { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
  section { padding: 44px 16px; }
  .section-title { font-size: 1.5rem; }
  h1 { font-size: 1.7rem; }
  .hero-section { padding-top: 30px; padding-bottom: 40px; }
  .btn-primary, .btn-secondary { padding: 13px 22px; font-size: 0.9rem; }
  .cta-banner { padding: 30px 18px; }
  .cta-banner h2 { font-size: 1.4rem; }
  .faq-body ol li { padding: 14px 14px 14px 44px; }
  .faq-body ol li::before { left: 8px; top: 14px; width: 24px; height: 24px; font-size: 0.72rem; }
}

@media (max-width: 480px) {
  .specs-grid { grid-template-columns: 1fr 1fr; }
  .hero-mockup { width: 160px; height: 220px; }
  .hero-glow { width: 130px; height: 130px; }
  .btn-nav-cta { padding: 8px 14px; font-size: 0.78rem; }
  .logo-text { font-size: 0.95rem; }
  .logo-icon { width: 32px; height: 32px; }
}