/* ========================================
   快连(KuaiLian) Brand Website Stylesheet
   Domain: klvpnc.com.cn
   ======================================== */

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #3B82F6;
  --secondary: #0F172A;
  --accent: #F97316;
  --accent-hover: #EA580C;
  --success: #10B981;
  --bg-white: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-gray: #F1F5F9;
  --text-dark: #1E293B;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --max-width: 1200px;
  --header-height: 72px;
}

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;
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

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

ul, ol {
  list-style: none;
}

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

/* ========================================
   Header / Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}

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

.nav-menu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  transition: color 0.2s;
  padding: 8px 0;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}

.nav-menu a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: var(--primary);
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s, transform 0.2s;
}

.header-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: 0.3s;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.875rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  padding: calc(var(--header-height) + 80px) 0 80px;
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 50%, #BFDBFE 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(37,99,235,0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--primary);
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-body);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-mockup {
  width: 320px;
  height: 420px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero-mockup::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.mockup-icon {
  width: 80px;
  height: 80px;
  border: 3px solid rgba(255,255,255,0.8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.mockup-text {
  font-size: 1.25rem;
  font-weight: 600;
  position: relative;
  z-index: 1;
}

.mockup-sub {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

/* ========================================
   Section Common
   ======================================== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-light);
}

.section-dark {
  background: var(--secondary);
  color: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
}

.section-dark .section-header h2 {
  color: #fff;
}

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

.section-dark .section-header p {
  color: rgba(255,255,255,0.7);
}

/* ========================================
   Features Grid
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity 0.3s;
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 12px;
}

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

/* ========================================
   Stats Section
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-card {
  text-align: center;
  padding: 32px 20px;
}

.stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1;
}

.section-dark .stat-number {
  color: var(--accent);
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.section-dark .stat-label {
  color: rgba(255,255,255,0.7);
}

/* ========================================
   Platforms Section
   ======================================== */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: all 0.3s;
}

.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.platform-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}

.platform-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.platform-card .btn {
  width: 100%;
}

/* ========================================
   Testimonials
   ======================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  color: #FBBF24;
  font-size: 1.1rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.testimonial-name {
  font-weight: 600;
  color: var(--secondary);
  font-size: 0.9rem;
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.rating-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  padding: 20px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.rating-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--secondary);
}

.rating-score {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.pricing-card.popular:hover {
  transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 4px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-name {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 28px;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-features li::before {
  content: "\2713";
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
}

/* ========================================
   FAQ / Help Section
   ======================================== */
.faq-category {
  margin-bottom: 48px;
}

.faq-category:last-child {
  margin-bottom: 0;
}

.faq-category-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-category-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  flex-shrink: 0;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 16px;
}

.faq-question {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 16px;
}

.faq-answer {
  color: var(--text-body);
  line-height: 1.8;
}

.faq-answer ol {
  list-style: decimal;
  padding-left: 24px;
}

.faq-answer ol li {
  padding: 6px 0;
  font-size: 0.95rem;
}

/* ========================================
   About Page
   ======================================== */
.about-hero {
  padding: calc(var(--header-height) + 60px) 0 60px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  text-align: center;
}

.about-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 16px;
}

.about-hero p {
  font-size: 1.15rem;
  color: var(--text-body);
  max-width: 600px;
  margin: 0 auto;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-block {
  margin-bottom: 48px;
}

.about-block h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
}

.about-block p {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 12px;
}

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

.about-value {
  text-align: center;
  padding: 28px 20px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
}

.about-value-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.about-value h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}

.about-value p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ========================================
   Official Notice
   ======================================== */
.official-notice {
  background: linear-gradient(135deg, #FEF3C7, #FDE68A);
  border: 1px solid #F59E0B;
  border-radius: var(--radius-md);
  padding: 20px 28px;
  margin: 40px auto;
  max-width: var(--max-width);
  display: flex;
  align-items: center;
  gap: 12px;
}

.official-notice-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.official-notice p {
  font-size: 0.95rem;
  color: #92400E;
  font-weight: 500;
}

.official-notice a {
  color: var(--primary);
  font-weight: 700;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-accent {
  font-size: 1.1rem;
  padding: 16px 40px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  padding: 6px 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

.footer-official {
  text-align: center;
  padding: 16px 0 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.footer-official a {
  color: var(--accent);
  font-weight: 600;
}

/* ========================================
   Mobile Floating Button
   ======================================== */
.mobile-float-btn {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 20px;
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  z-index: 999;
}

.mobile-float-btn .btn {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

/* ========================================
   Page Header (Inner Pages)
   ======================================== */
.page-header {
  padding: calc(var(--header-height) + 48px) 0 48px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  text-align: center;
}

.page-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.05rem;
  color: var(--text-body);
  max-width: 560px;
  margin: 0 auto;
}

/* ========================================
   Features Detail Page
   ======================================== */
.feature-detail {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 64px;
}

.feature-detail:nth-child(even) {
  flex-direction: row-reverse;
}

.feature-detail-content {
  flex: 1;
}

.feature-detail-visual {
  flex: 1;
  display: flex;
  justify-content: center;
}

.feature-detail-icon {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.feature-detail-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
}

.feature-detail-content p {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 12px;
}

.feature-detail-list {
  margin-top: 16px;
}

.feature-detail-list li {
  padding: 6px 0;
  font-size: 0.95rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-detail-list li::before {
  content: "\2713";
  color: var(--success);
  font-weight: 700;
}

/* ========================================
   Pricing Page Extras
   ======================================== */
.pricing-compare {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
}

.pricing-compare th,
.pricing-compare td {
  padding: 16px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.pricing-compare th {
  background: var(--bg-light);
  font-weight: 600;
  color: var(--secondary);
}

.pricing-compare td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--secondary);
}

.pricing-compare tr:hover td {
  background: #F8FAFC;
}

.check-mark {
  color: var(--success);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

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

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

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

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

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

  .pricing-card.popular {
    transform: scale(1.02);
  }

  .pricing-card.popular:hover {
    transform: scale(1.02) translateY(-4px);
  }

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

  .feature-detail {
    flex-direction: column !important;
    text-align: center;
  }

  .feature-detail-list li {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    width: 100%;
  }

  .nav-menu a:hover,
  .nav-menu a.active {
    background: var(--bg-light);
  }

  .nav-menu a.active::after {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: calc(var(--header-height) + 48px) 0 48px;
  }

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

  .hero-visual {
    display: none;
  }

  .section {
    padding: 56px 0;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .platforms-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.popular {
    transform: none;
  }

  .pricing-card.popular:hover {
    transform: translateY(-4px);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .mobile-float-btn {
    display: block;
  }

  body {
    padding-bottom: 72px;
  }

  .rating-badge {
    flex-direction: column;
    gap: 8px;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }

  .pricing-compare {
    font-size: 0.85rem;
  }

  .pricing-compare th,
  .pricing-compare td {
    padding: 10px 8px;
  }

  .official-notice {
    flex-direction: column;
    text-align: center;
    margin: 24px 16px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-number {
    font-size: 2rem;
  }
}