/* ============================================
   火帀app下载 - 主样式表
   配色: 深色(#0d0d1a) + 火币橙(#f7931a) + 科技蓝(#2775ca) + 链上绿(#10b981) + 白色
   ============================================ */

:root {
  --bg-primary: #0d0d1a;
  --bg-secondary: #13132a;
  --bg-card: #1a1a35;
  --bg-card-hover: #222240;
  --color-orange: #f7931a;
  --color-orange-light: #fba94a;
  --color-blue: #2775ca;
  --color-blue-light: #3b8fdf;
  --color-green: #10b981;
  --color-green-light: #34d399;
  --color-white: #ffffff;
  --color-gray: #a0a0b8;
  --color-gray-light: #c8c8d8;
  --color-border: #2a2a45;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-primary);
  color: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

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

ul { list-style: none; }

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(247, 147, 26, 0.4); }
  50% { box-shadow: 0 0 0 20px rgba(247, 147, 26, 0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes scanLine {
  0% { top: -100%; }
  100% { top: 100%; }
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease forwards;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* ============ 导航栏 ============ */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 13, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

header.scrolled {
  background: rgba(13, 13, 26, 0.98);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-orange);
}

.nav-brand .brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--bg-primary);
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--color-gray-light);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-orange);
  transition: width var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-download-btn {
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  color: var(--bg-primary) !important;
  padding: 10px 24px !important;
  border-radius: 50px !important;
  font-weight: 700 !important;
  transition: all var(--transition) !important;
}

.nav-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 147, 26, 0.4);
}

.nav-download-btn::after {
  display: none !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  width: 28px;
  height: 3px;
  background: var(--color-white);
  border-radius: 3px;
  transition: var(--transition);
}

/* ============ Hero ============ */
#hero {
  padding: 140px 24px 100px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

#hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(247, 147, 26, 0.08), transparent 70%);
  border-radius: 50%;
}

#hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(39, 117, 202, 0.06), transparent 70%);
  border-radius: 50%;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-white));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content .hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-gray-light);
  margin-bottom: 16px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-highlights span {
  background: rgba(247, 147, 26, 0.1);
  color: var(--color-orange-light);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.9rem;
  border: 1px solid rgba(247, 147, 26, 0.2);
}

.hero-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-orange), #fba94a);
  color: var(--bg-primary);
  padding: 16px 40px;
  border-radius: 50px;
  font-size: 1.15rem;
  font-weight: 700;
  animation: pulse 2s infinite;
  transition: all var(--transition);
}

.hero-download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(247, 147, 26, 0.5);
}

.hero-image {
  display: flex;
  justify-content: center;
  animation: float 4s ease-in-out infinite;
}

.hero-image img {
  max-width: 400px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ============ 统计栏 ============ */
.stats-bar {
  background: var(--bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 24px;
}

.stats-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item .stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-orange), var(--color-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item .stat-label {
  font-size: 0.95rem;
  color: var(--color-gray);
  margin-top: 4px;
}

/* ============ Section通用 ============ */
.section {
  padding: 100px 24px;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-header h2 span {
  background: linear-gradient(135deg, var(--color-orange), var(--color-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-gray);
  max-width: 600px;
  margin: 0 auto;
}

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

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

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

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-blue), var(--color-green));
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(247, 147, 26, 0.3);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

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

.feature-card .feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: rgba(247, 147, 26, 0.1);
  color: var(--color-orange);
}

.feature-card:nth-child(2) .feature-icon {
  background: rgba(39, 117, 202, 0.1);
  color: var(--color-blue-light);
}

.feature-card:nth-child(3) .feature-icon {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-green);
}

.feature-card:nth-child(4) .feature-icon {
  background: rgba(39, 117, 202, 0.1);
  color: var(--color-blue-light);
}

.feature-card:nth-child(5) .feature-icon {
  background: rgba(247, 147, 26, 0.1);
  color: var(--color-orange-light);
}

.feature-card:nth-child(6) .feature-icon {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-green-light);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-gray);
  line-height: 1.7;
}

/* ============ 下载指南区 ============ */
#download-guide {
  background: var(--bg-secondary);
}

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

.guide-step {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
}

.guide-step:hover {
  transform: translateY(-4px);
  border-color: rgba(247, 147, 26, 0.3);
}

.guide-step .step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  color: var(--bg-primary);
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.guide-step h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.guide-step p {
  font-size: 0.9rem;
  color: var(--color-gray);
}

/* ============ CTA ============ */
#cta {
  background: linear-gradient(135deg, rgba(247, 147, 26, 0.05), rgba(39, 117, 202, 0.05));
  text-align: center;
}

.cta-box {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  max-width: 700px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.cta-box p {
  color: var(--color-gray-light);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-orange), #fba94a);
  color: var(--bg-primary);
  padding: 18px 48px;
  border-radius: 50px;
  font-size: 1.2rem;
  font-weight: 700;
  animation: pulse 2s infinite;
  transition: all var(--transition);
}

.cta-download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(247, 147, 26, 0.5);
}

.cta-platforms {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 24px;
}

.cta-platforms span {
  background: rgba(255,255,255,0.05);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.9rem;
  color: var(--color-gray-light);
}

/* ============ 页面banner ============ */
.page-banner {
  padding: 120px 24px 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(247, 147, 26, 0.06), transparent 70%);
  border-radius: 50%;
}

.page-banner h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.page-banner h1 span {
  background: linear-gradient(135deg, var(--color-orange), var(--color-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-banner p {
  font-size: 1.1rem;
  color: var(--color-gray-light);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* ============ 关于页面 ============ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--color-orange);
}

.about-text p {
  color: var(--color-gray-light);
  margin-bottom: 16px;
  line-height: 1.9;
}

.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* 时间线 */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-orange), var(--color-blue));
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
  padding-left: 24px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--color-orange);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
}

.timeline-item .year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-orange);
  margin-bottom: 4px;
}

.timeline-item h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.timeline-item p {
  color: var(--color-gray);
  font-size: 0.95rem;
}

/* 安全卡片 */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.security-card {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: all var(--transition);
}

.security-card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-4px);
}

.security-card .sec-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--color-green);
}

.security-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.security-card p {
  font-size: 0.9rem;
  color: var(--color-gray);
}

/* ============ 服务页面 ============ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(247, 147, 26, 0.3);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-card .service-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--color-gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-card .service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-card .service-tags span {
  background: rgba(247, 147, 26, 0.08);
  color: var(--color-orange-light);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
}

.service-table-wrap {
  overflow-x: auto;
  margin-top: 40px;
}

.service-table {
  width: 100%;
  border-collapse: collapse;
}

.service-table th,
.service-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.service-table th {
  background: var(--bg-card);
  font-weight: 700;
  color: var(--color-orange);
  font-size: 0.95rem;
}

.service-table td {
  color: var(--color-gray-light);
  font-size: 0.9rem;
}

.service-table tr:hover td {
  background: rgba(255,255,255,0.02);
}

/* ============ FAQ ============ */
.faq-search-box {
  max-width: 500px;
  margin: 0 auto 40px;
}

.faq-search-box input {
  width: 100%;
  padding: 14px 20px;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  background: var(--bg-card);
  color: var(--color-white);
  font-size: 1rem;
  outline: none;
  transition: border var(--transition);
}

.faq-search-box input:focus {
  border-color: var(--color-orange);
}

.faq-categories {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.faq-cat-btn {
  padding: 8px 24px;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  background: var(--bg-card);
  color: var(--color-gray-light);
  cursor: pointer;
  font-size: 0.95rem;
  transition: all var(--transition);
}

.faq-cat-btn:hover,
.faq-cat-btn.active {
  background: rgba(247, 147, 26, 0.1);
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-list details {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  transition: all var(--transition);
}

.faq-list details[open] {
  border-color: rgba(247, 147, 26, 0.3);
}

.faq-list summary {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition);
}

.faq-list summary:hover {
  color: var(--color-orange);
}

.faq-list summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--color-orange);
  font-weight: 300;
  transition: transform var(--transition);
}

.faq-list details[open] summary::after {
  content: '−';
}

.faq-list .faq-answer {
  padding: 0 24px 20px;
  color: var(--color-gray-light);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ============ 联系页面 ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form-wrap h2 {
  font-size: 1.8rem;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-gray-light);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--bg-card);
  color: var(--color-white);
  font-size: 1rem;
  outline: none;
  transition: border var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-orange);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  background: linear-gradient(135deg, var(--color-orange), #fba94a);
  color: var(--bg-primary);
  padding: 14px 36px;
  border: none;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(247, 147, 26, 0.4);
}

.contact-info-side h2 {
  font-size: 1.8rem;
  margin-bottom: 24px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.contact-info-item .ci-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-info-item h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.9rem;
  color: var(--color-gray);
}

.social-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.social-links a {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.9rem;
  transition: all var(--transition);
}

.social-links a:hover {
  background: rgba(247, 147, 26, 0.1);
  border-color: var(--color-orange);
  color: var(--color-orange);
}

/* ============ 页脚 ============ */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 40px 24px;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

footer p {
  color: var(--color-gray);
  font-size: 0.9rem;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content h1 { font-size: 2.4rem; }
  .hero-highlights { justify-content: center; }
  .hero-image { order: -1; }
  .hero-image img { max-width: 300px; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-container { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 100%;
    width: 100%;
    height: calc(100vh - 72px);
    background: rgba(13, 13, 26, 0.98);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 40px;
    gap: 24px;
    transition: left var(--transition);
  }

  .nav-links.active {
    left: 0;
  }

  .nav-toggle { display: flex; }

  .hero-content h1 { font-size: 2rem; }

  .features-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .stats-container { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: 1fr; }

  .section-header h2 { font-size: 1.8rem; }
  .page-banner h1 { font-size: 1.9rem; }

  .section { padding: 60px 16px; }
  #hero { padding: 120px 16px 60px; }
}