/* ========================================
   易欧注册 - Style CSS
   配色：深色(#0a0f1a)+安全蓝(#2563eb)+生态金(#f59e0b)+信任绿(#10b981)+白色
   ======================================== */

/* === CSS Variables === */
:root {
  --bg-dark: #0a0f1a;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --bg-light: #1e293b;
  --blue: #2563eb;
  --blue-light: #3b82f6;
  --blue-dark: #1d4ed8;
  --gold: #f59e0b;
  --gold-light: #fbbf24;
  --green: #10b981;
  --green-light: #34d399;
  --white: #ffffff;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gradient-hero: linear-gradient(135deg, #0a0f1a 0%, #1a2332 50%, #0f172a 100%);
  --gradient-blue: linear-gradient(135deg, #2563eb, #1d4ed8);
  --gradient-gold: linear-gradient(135deg, #f59e0b, #d97706);
  --gradient-green: linear-gradient(135deg, #10b981, #059669);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.5);
  --shadow-glow-blue: 0 0 20px rgba(37,99,235,0.3);
  --shadow-glow-gold: 0 0 20px rgba(245,158,11,0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--gray-200);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

/* === Animations === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,99,235,0.5); }
  50% { box-shadow: 0 0 0 16px rgba(37,99,235,0); }
}
@keyframes pulseGold {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245,158,11,0.5); }
  50% { box-shadow: 0 0 0 16px rgba(245,158,11,0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes scanLine {
  0% { top: -5%; }
  100% { top: 105%; }
}

.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-up.reveal {
  opacity: 1;
  transform: translateY(0);
}

/* === Header & Navigation === */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,15,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(37,99,235,0.1);
}
nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.nav-brand {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-brand::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--gradient-blue);
}
.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-links a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-300);
  transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  background: rgba(37,99,235,0.15);
}
.nav-cta {
  background: var(--gradient-blue) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
  border-radius: var(--radius-sm);
  animation: pulse 2s infinite;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* === Hero Section === */
.hero {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  min-height: 85vh;
  display: flex;
  align-items: center;
}
.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(37,99,235,0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 50%, rgba(245,158,11,0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 80%, rgba(16,185,129,0.05) 0%, transparent 50%);
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(37,99,235,0.015) 2px,
    rgba(37,99,235,0.015) 4px
  );
}
.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 100px 24px;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-text { animation: fadeInUp 0.8s ease forwards; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,99,235,0.15);
  border: 1px solid rgba(37,99,235,0.3);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--blue-light);
  margin-bottom: 24px;
}
.hero-badge::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero h1 .highlight { background: var(--gradient-blue); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero h1 .highlight-gold { background: var(--gradient-gold); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc {
  font-size: 1.15rem;
  color: var(--gray-400);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-blue);
  color: var(--white);
  animation: pulse 2s infinite;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-blue); }
.btn-gold {
  background: var(--gradient-gold);
  color: var(--bg-dark);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-gold); }
.btn-outline {
  border: 2px solid var(--blue);
  color: var(--blue-light);
  background: transparent;
}
.btn-outline:hover { background: var(--blue); color: var(--white); transform: translateY(-2px); }
.btn-green {
  background: var(--gradient-green);
  color: var(--white);
}
.btn-green:hover { transform: translateY(-2px); box-shadow: 0 0 20px rgba(16,185,129,0.3); }

.hero-image {
  animation: fadeInRight 0.8s ease forwards;
  position: relative;
}
.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.hero-image::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-lg);
  background: var(--gradient-blue);
  z-index: -1;
  opacity: 0.3;
  filter: blur(30px);
}

/* === Stats Bar === */
.stats-bar {
  background: var(--bg-card);
  border-bottom: 1px solid rgba(37,99,235,0.1);
}
.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item .stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-item .stat-unit { color: var(--gold); font-weight: 700; }
.stat-item .stat-label { color: var(--gray-400); font-size: 0.9rem; margin-top: 4px; }

/* === Section Common === */
section { padding: 80px 24px; }
.section-inner { max-width: 1280px; margin: 0 auto; }
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.section-header h2 .highlight { background: var(--gradient-blue); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-header .subtitle {
  font-size: 1.1rem;
  color: var(--gray-400);
  max-width: 600px;
  margin: 0 auto;
}

/* === Features Grid === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(37,99,235,0.08);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-blue);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37,99,235,0.2); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  background: rgba(37,99,235,0.1);
  color: var(--blue-light);
}
.feature-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; color: var(--white); }
.feature-card p { color: var(--gray-400); font-size: 0.95rem; line-height: 1.8; }

/* === CTA Section === */
.cta-section {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(37,99,235,0.1) 0%, transparent 70%);
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-inner h2 { font-size: 2.4rem; font-weight: 800; margin-bottom: 16px; }
.cta-inner p { font-size: 1.1rem; color: var(--gray-400); margin-bottom: 32px; }
.cta-buttons { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }

/* === About Page === */
.about-hero {
  background: var(--gradient-hero);
  padding: 100px 24px 80px;
  text-align: center;
}
.about-hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; }
.about-hero .subtitle { color: var(--gray-400); font-size: 1.1rem; max-width: 700px; margin: 0 auto; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-text h2 { font-size: 2rem; font-weight: 700; margin-bottom: 20px; }
.about-text p { color: var(--gray-400); margin-bottom: 16px; font-size: 1rem; line-height: 1.9; }
.about-image img { border-radius: var(--radius-lg); }

.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--gold), var(--green));
}
.timeline-item {
  position: relative;
  margin-bottom: 36px;
  padding-left: 28px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid var(--blue);
  background: var(--bg-dark);
}
.timeline-year {
  font-size: 0.85rem;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 4px;
}
.timeline-item h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; }
.timeline-item p { color: var(--gray-400); font-size: 0.95rem; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid rgba(37,99,235,0.08);
  transition: var(--transition);
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 3px solid var(--blue);
}
.team-card h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.team-card .role { color: var(--gold); font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; }
.team-card p { color: var(--gray-400); font-size: 0.85rem; }

.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.security-card {
  background: var(--bg-card);
  border: 1px solid rgba(16,185,129,0.1);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.security-card:hover { transform: translateY(-4px); border-color: rgba(16,185,129,0.3); box-shadow: 0 0 20px rgba(16,185,129,0.1); }
.security-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(16,185,129,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.6rem;
  color: var(--green);
}
.security-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.security-card p { color: var(--gray-400); font-size: 0.9rem; }

/* === Services Page === */
.services-hero {
  background: var(--gradient-hero);
  padding: 100px 24px 80px;
  text-align: center;
}
.services-hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; }
.services-hero .subtitle { color: var(--gray-400); font-size: 1.1rem; max-width: 700px; margin: 0 auto; }

.service-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  background: var(--bg-card);
  border: 1px solid rgba(37,99,235,0.08);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 20px;
  transition: var(--transition);
  align-items: start;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(37,99,235,0.2); }
.service-card .s-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: rgba(37,99,235,0.1);
  color: var(--blue-light);
  flex-shrink: 0;
}
.service-card .s-body h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: 8px; color: var(--white); }
.service-card .s-body p { color: var(--gray-400); font-size: 0.95rem; line-height: 1.8; margin-bottom: 12px; }
.service-card .s-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.s-tag {
  padding: 4px 12px;
  background: rgba(245,158,11,0.1);
  color: var(--gold);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* === FAQ Page === */
.faq-hero {
  background: var(--gradient-hero);
  padding: 100px 24px 80px;
  text-align: center;
}
.faq-hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; }
.faq-search {
  max-width: 500px;
  margin: 32px auto 0;
  position: relative;
}
.faq-search input {
  width: 100%;
  padding: 14px 48px 14px 20px;
  border-radius: 50px;
  border: 1px solid rgba(37,99,235,0.3);
  background: var(--bg-card);
  color: var(--white);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}
.faq-search input:focus { border-color: var(--blue); box-shadow: var(--shadow-glow-blue); }
.faq-search input::placeholder { color: var(--gray-500); }
.faq-search .search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

.faq-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
}
.faq-cat {
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid rgba(37,99,235,0.2);
  background: transparent;
  color: var(--gray-400);
  transition: var(--transition);
}
.faq-cat:hover, .faq-cat.active { background: var(--blue); color: var(--white); border-color: var(--blue); }

.faq-list { max-width: 900px; margin: 0 auto; }
details {
  background: var(--bg-card);
  border: 1px solid rgba(37,99,235,0.08);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: var(--transition);
  overflow: hidden;
}
details:hover { border-color: rgba(37,99,235,0.2); }
details[open] { border-color: var(--blue); box-shadow: var(--shadow-glow-blue); }
summary {
  padding: 20px 56px 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  position: relative;
  color: var(--white);
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--blue-light);
  transition: var(--transition);
}
details[open] summary::after { content: "−"; }
.faq-answer {
  padding: 0 24px 20px;
  color: var(--gray-400);
  line-height: 1.9;
  font-size: 0.95rem;
}

/* === Contact Page === */
.contact-hero {
  background: var(--gradient-hero);
  padding: 100px 24px 80px;
  text-align: center;
}
.contact-hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  max-width: 1100px;
  margin: 0 auto;
}
.contact-form-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid rgba(37,99,235,0.1);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--gray-200);
  font-size: 0.95rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(37,99,235,0.2);
  background: var(--bg-light);
  color: var(--white);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--blue); box-shadow: var(--shadow-glow-blue); }
.form-group textarea { min-height: 140px; resize: vertical; }
.form-group select option { background: var(--bg-dark); color: var(--white); }

.contact-info-side h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 20px; }
.contact-method {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  border: 1px solid rgba(37,99,235,0.08);
  transition: var(--transition);
}
.contact-method:hover { border-color: rgba(37,99,235,0.2); }
.cm-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(37,99,235,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--blue-light);
  flex-shrink: 0;
}
.cm-body h4 { font-weight: 700; margin-bottom: 4px; font-size: 1rem; }
.cm-body p { color: var(--gray-400); font-size: 0.9rem; }

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.social-link {
  padding: 10px 20px;
  border-radius: 50px;
  border: 1px solid rgba(37,99,235,0.2);
  color: var(--gray-300);
  font-size: 0.9rem;
  transition: var(--transition);
}
.social-link:hover { background: var(--blue); color: var(--white); border-color: var(--blue); }

.biz-cooperation {
  margin-top: 32px;
  background: rgba(245,158,11,0.05);
  border: 1px solid rgba(245,158,11,0.15);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.biz-cooperation h4 { font-weight: 700; margin-bottom: 12px; font-size: 1.1rem; color: var(--gold); }

/* === Footer === */
footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(37,99,235,0.1);
  padding: 48px 24px 24px;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-col h4 { font-weight: 700; margin-bottom: 16px; font-size: 1rem; }
.footer-col p { color: var(--gray-400); font-size: 0.9rem; line-height: 1.8; }
.footer-col a {
  display: block;
  color: var(--gray-400);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--blue-light); }
.footer-bottom {
  max-width: 1280px;
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(37,99,235,0.06);
  text-align: center;
  color: var(--gray-500);
  font-size: 0.85rem;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-buttons { justify-content: center; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  .section-header h2 { font-size: 1.6rem; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10,15,26,0.98);
    padding: 16px 24px;
    border-bottom: 1px solid rgba(37,99,235,0.1);
    gap: 8px;
  }
  .nav-toggle { display: flex; }
  .service-card { grid-template-columns: 1fr; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
  .about-hero h1, .services-hero h1, .faq-hero h1, .contact-hero h1 { font-size: 2rem; }
}

/* === Utility === */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }