/* ===== CSS Variables ===== */
:root {
  --primary: #6C5CE7;
  --primary-dark: #5A4BD1;
  --primary-light: #A29BFE;
  --primary-bg: #F0EDFF;
  --secondary: #00D2D3;
  --secondary-dark: #00B4B5;
  --accent: #FD79A8;
  --dark: #0F0E17;
  --dark-secondary: #1A1932;
  --gray-900: #2D3436;
  --gray-700: #4A5568;
  --gray-500: #718096;
  --gray-300: #CBD5E0;
  --gray-100: #F7FAFC;
  --white: #FFFFFF;
  --gradient-primary: linear-gradient(135deg, #6C5CE7 0%, #A29BFE 100%);
  --gradient-hero: linear-gradient(135deg, #0F0E17 0%, #1A1932 50%, #2D1B69 100%);
  --gradient-cta: linear-gradient(135deg, #6C5CE7 0%, #00D2D3 100%);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --shadow-primary: 0 8px 30px rgba(108, 92, 231, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--gray-700);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

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

/* ===== Section Common ===== */
.section {
  padding: 100px 0;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto 60px;
  line-height: 1.7;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(108, 92, 231, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
}

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

.btn-outline-dark:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

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

.btn-lg {
  padding: 18px 40px;
  font-size: 18px;
}

.btn-sm {
  padding: 10px 24px;
  font-size: 14px;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 14, 23, 0.95);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.15);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--white);
}

.navbar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: var(--white);
}

.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

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

.navbar-links a {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  font-weight: 500;
}

.navbar-links a:hover {
  color: var(--white);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.lang-switch:hover {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}

.lang-switch svg {
  width: 16px;
  height: 16px;
}

.btn-nav-login {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px;
}

.btn-nav-login:hover {
  color: var(--white);
}

.btn-nav-signup {
  background: var(--white);
  color: var(--dark);
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-nav-signup:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(255,255,255,0.2);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
  background: var(--gradient-hero);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 100px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 210, 211, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

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

.hero-content {
  max-width: 580px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 92, 231, 0.15);
  border: 1px solid rgba(108, 92, 231, 0.3);
  border-radius: var(--radius-full);
  padding: 8px 20px;
  font-size: 14px;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--secondary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 19px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-trust-avatars {
  display: flex;
}

.hero-trust-avatars .avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--dark);
  margin-left: -10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.hero-trust-avatars .avatar:first-child {
  margin-left: 0;
}

.hero-trust-text {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
}

.hero-trust-text strong {
  color: rgba(255,255,255,0.8);
}

.hero-visual {
  position: relative;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 80px rgba(0,0,0,0.3);
}

.hero-dashboard {
  width: 100%;
  background: linear-gradient(145deg, #1e1e2e 0%, #2a2a4a 100%);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.08);
}

.dashboard-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.dashboard-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dashboard-dot.red { background: #FF6B6B; }
.dashboard-dot.yellow { background: #FFE66D; }
.dashboard-dot.green { background: #51CF66; }

.dashboard-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.dash-card {
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.06);
}

.dash-card-label {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.dash-card-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--white);
}

.dash-card-change {
  font-size: 13px;
  margin-top: 6px;
}

.dash-card-change.up { color: #51CF66; }
.dash-card-change.down { color: #FF6B6B; }

.dash-chart {
  grid-column: 1 / -1;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.06);
  height: 160px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding-top: 40px;
}

.dash-chart::before {
  content: 'Engagement Overview';
  position: absolute;
  top: 20px;
  left: 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

.dash-bar {
  flex: 1;
  border-radius: 4px 4px 0 0;
  transition: var(--transition);
}

.floating-card {
  position: absolute;
  background: rgba(30, 30, 46, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-xl);
  animation: float 6s ease-in-out infinite;
}

.floating-card.card-1 {
  top: 10%;
  right: -40px;
  animation-delay: 0s;
}

.floating-card.card-2 {
  bottom: 15%;
  left: -30px;
  animation-delay: 2s;
}

.floating-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.floating-card-icon.purple { background: rgba(108,92,231,0.2); }
.floating-card-icon.green { background: rgba(81,207,102,0.2); }
.floating-card-icon.blue { background: rgba(0,210,211,0.2); }

.floating-card-text {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

.floating-card-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

/* ===== Features ===== */
.features {
  background: var(--white);
}

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

.feature-card {
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-300);
  background: var(--white);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.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;
  margin-bottom: 24px;
  font-size: 24px;
}

.feature-icon.purple { background: rgba(108,92,231,0.1); color: var(--primary); }
.feature-icon.teal { background: rgba(0,210,211,0.1); color: var(--secondary); }
.feature-icon.pink { background: rgba(253,121,168,0.1); color: var(--accent); }
.feature-icon.blue { background: rgba(56,103,214,0.1); color: #3867D6; }
.feature-icon.orange { background: rgba(253,169,45,0.1); color: #FDA92D; }
.feature-icon.green { background: rgba(81,207,102,0.1); color: #51CF66; }

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== How It Works ===== */
.how-it-works {
  background: var(--gray-100);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 16.66%;
  right: 16.66%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--secondary));
  opacity: 0.3;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 28px;
  font-weight: 800;
  position: relative;
  z-index: 1;
}

.step:nth-child(1) .step-number {
  background: linear-gradient(135deg, #6C5CE7, #A29BFE);
  color: var(--white);
}

.step:nth-child(2) .step-number {
  background: linear-gradient(135deg, #00D2D3, #55EFC4);
  color: var(--white);
}

.step:nth-child(3) .step-number {
  background: linear-gradient(135deg, #FD79A8, #FDCB6E);
  color: var(--white);
}

.step-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.step h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.step p {
  font-size: 15px;
  color: var(--gray-500);
  line-height: 1.7;
  max-width: 300px;
  margin: 0 auto;
}

/* ===== Pricing ===== */
.pricing {
  background: var(--white);
}

.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

.pricing-toggle span {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-500);
}

.pricing-toggle span.active {
  color: var(--dark);
  font-weight: 600;
}

.toggle-switch {
  width: 52px;
  height: 28px;
  background: var(--gray-300);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: var(--transition);
}

.toggle-switch.active {
  background: var(--primary);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: var(--white);
  border-radius: 50%;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.toggle-switch.active::after {
  left: 27px;
}

.save-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--secondary);
  background: rgba(0,210,211,0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

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

.pricing-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-primary);
  transform: scale(1.05);
}

.pricing-card.popular:hover {
  transform: scale(1.05) translateY(-5px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}

.pricing-card-desc {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 24px;
}

.pricing-card-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
}

.pricing-card-price .amount {
  font-size: 44px;
  font-weight: 800;
  color: var(--dark);
  line-height: 1;
}

.pricing-card-price .period {
  font-size: 15px;
  color: var(--gray-500);
}

.pricing-card-features {
  margin-bottom: 32px;
}

.pricing-card-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--gray-700);
}

.pricing-card-features li .check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(81,207,102,0.1);
  color: #51CF66;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

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

/* ===== CTA Section ===== */
.cta-section {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 650px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 40px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.2;
}

.cta-content p {
  font-size: 18px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  line-height: 1.7;
}

.cta-note {
  font-size: 14px;
  color: rgba(255,255,255,0.4);
  margin-top: 20px;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 20;
  background: var(--dark);
  padding: 80px 0 40px;
  color: rgba(255,255,255,0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand {
  max-width: 280px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 900;
  color: var(--white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 16px;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
}

.footer-col a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: rgba(255,255,255,0.4);
  cursor: pointer;
}

.footer-bottom-links a:hover {
  color: rgba(255,255,255,0.8);
}

/* ===== Platform Logos ===== */
.platforms-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 60px 0;
  border-bottom: 1px solid var(--gray-300);
}

.platform-logo {
  font-size: 32px;
  opacity: 0.4;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-500);
}

.platform-logo:hover {
  opacity: 0.8;
}

.platform-logo span {
  font-size: 14px;
  font-weight: 600;
}

/* ===== Legal Pages ===== */
.legal-page {
  min-height: 100vh;
  background: var(--gray-100);
}

.legal-nav {
  background: var(--dark);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.legal-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.legal-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--white);
}

.legal-nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.legal-nav-links a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  font-weight: 500;
}

.legal-nav-links a:hover {
  color: var(--white);
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}

.legal-content h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 12px;
}

.legal-update {
  font-size: 14px;
  color: var(--gray-500);
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--gray-300);
}

.legal-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-top: 40px;
  margin-bottom: 16px;
}

.legal-content p {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.8;
  margin-bottom: 16px;
}

.legal-content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-content ul li {
  font-size: 15px;
  color: var(--gray-700);
  line-height: 1.8;
  margin-bottom: 8px;
}

.legal-content a {
  color: var(--primary);
  font-weight: 500;
}

.legal-content a:hover {
  text-decoration: underline;
}

/* 官网 container 迁入的正文（ys.html / yh.html） */
.stl-legal-doc .header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--gray-300);
}

.stl-legal-doc .header h1 {
  margin-bottom: 16px;
}

.stl-legal-doc .date {
  font-size: 14px;
  color: var(--gray-500);
  margin-top: 6px;
}

.stl-legal-doc p.no-indent {
  text-indent: 0;
}

.stl-legal-doc h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-top: 28px;
  margin-bottom: 12px;
}

.stl-legal-doc h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
  margin-top: 20px;
  margin-bottom: 10px;
}

.legal-footer {
  background: var(--dark);
  padding: 30px 0;
  text-align: center;
}

.legal-footer p {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.legal-footer a {
  color: rgba(255,255,255,0.6);
}

.legal-footer a:hover {
  color: var(--white);
}

.legal-footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
}

@media (max-width: 768px) {
  .legal-content h1 {
    font-size: 28px;
  }

  .legal-content h2 {
    font-size: 19px;
  }

  .legal-nav-links {
    display: none;
  }
}

/* ===== Auth Pages (Login / Register) ===== */
.auth-page {
  min-height: 100vh;
  display: flex;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.auth-page::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 210, 211, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.auth-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 80px;
  position: relative;
  z-index: 1;
}

.auth-left-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 60px;
}

.auth-left-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.auth-left h1 {
  font-size: 42px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
}

.auth-left p {
  font-size: 18px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 440px;
  margin-bottom: 40px;
}

.auth-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.auth-feature-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.auth-feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(108, 92, 231, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.auth-feature-text {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

.auth-right {
  width: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  position: relative;
  z-index: 1;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  box-shadow: var(--shadow-xl);
}

.auth-lang-switch {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--gray-100);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-full);
  color: var(--gray-700);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.auth-lang-switch:hover {
  background: var(--gray-300);
}

.auth-lang-switch svg {
  width: 14px;
  height: 14px;
}

.auth-card {
  position: relative;
}

.auth-card h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.auth-card .auth-subtitle {
  font-size: 15px;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.auth-card .auth-subtitle a {
  color: var(--primary);
  font-weight: 600;
}

.auth-card .auth-subtitle a:hover {
  text-decoration: underline;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  font-family: var(--font-sans);
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--dark);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

.form-group input::placeholder {
  color: var(--gray-300);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

.form-checkbox span {
  font-size: 14px;
  color: var(--gray-700);
}

.form-forgot {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
}

.form-forgot:hover {
  text-decoration: underline;
}

.btn-auth {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: var(--transition);
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-primary);
  margin-bottom: 24px;
}

.btn-auth:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(108, 92, 231, 0.4);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gray-300);
}

.auth-divider span {
  font-size: 13px;
  color: var(--gray-500);
  white-space: nowrap;
}

.social-login {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.social-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--white);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
}

.social-btn:hover {
  border-color: var(--gray-500);
  background: var(--gray-100);
}

.social-btn svg {
  width: 20px;
  height: 20px;
}

.auth-terms {
  font-size: 12px;
  color: var(--gray-500);
  text-align: center;
  line-height: 1.6;
}

.auth-terms a {
  color: var(--primary);
  font-weight: 500;
}

.auth-terms a:hover {
  text-decoration: underline;
}

.password-wrapper {
  position: relative;
}

.password-wrapper input {
  padding-right: 48px;
}

.password-toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-500);
  padding: 4px;
  display: flex;
  align-items: center;
}

.password-toggle:hover {
  color: var(--gray-700);
}

@media (max-width: 960px) {
  .auth-left {
    display: none;
  }

  .auth-right {
    width: 100%;
    padding: 24px;
  }

  .auth-card {
    max-width: 480px;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: 32px 24px;
  }

  .auth-card h2 {
    font-size: 24px;
  }

  .social-login {
    flex-direction: column;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== Animations ===== */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

@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);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

  .hero h1 {
    font-size: 42px;
  }

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

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

  .hero-visual {
    max-width: 600px;
    margin: 0 auto;
  }

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

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

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

  .pricing-card.popular:hover {
    transform: translateY(-5px);
  }

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

  .footer-brand {
    grid-column: 1 / -1;
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }

  .section-title {
    font-size: 30px;
  }

  .section-subtitle {
    font-size: 16px;
  }

  .navbar-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 14, 23, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    z-index: 999;
    pointer-events: none;
    visibility: hidden;
  }

  .navbar-links.open {
    display: flex;
    pointer-events: auto;
    visibility: visible;
  }

  .navbar-links a {
    font-size: 20px;
    color: var(--white);
  }

  .navbar-actions {
    display: none;
  }

  .navbar-actions.mobile-show {
    display: flex;
    flex-direction: column;
    position: fixed;
    bottom: 40px;
    left: 24px;
    right: 24px;
    z-index: 1000;
    gap: 12px;
  }

  .mobile-toggle {
    display: flex;
    z-index: 1001;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .floating-card {
    display: none;
  }

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

  .steps {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .steps::before {
    display: none;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .cta-content h2 {
    font-size: 30px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }

  .container {
    padding: 0 16px;
  }

  .pricing-card {
    padding: 28px 20px;
  }

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