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

:root {
  --primary: #6C5CE7;
  --primary-dark: #5A4BD1;
  --accent: #00CEC9;
  --dark: #1A1A2E;
  --dark-light: #16213E;
  --text: #2D3436;
  --text-light: #636E72;
  --white: #FFFFFF;
  --bg-light: #F8F9FD;
  --border: #E0E0E0;
  --gradient: linear-gradient(135deg, #6C5CE7 0%, #00CEC9 100%);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial,
    sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}

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

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

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

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #f8f9fd 0%, #e8e6ff 50%, #d4f5f5 100%);
}

.hero-bg-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-bg-shapes .shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
}

.hero-bg-shapes .shape-1 {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -150px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
}

.hero-bg-shapes .shape-2 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  bottom: -80px;
  left: -60px;
  animation: float 6s ease-in-out infinite reverse;
}

.hero-bg-shapes .shape-3 {
  width: 200px;
  height: 200px;
  background: var(--primary);
  top: 40%;
  left: 50%;
  animation: float 10s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(5deg); }
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
  padding-top: 72px;
}

.hero-text {
  flex: 1;
}

.hero-text .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(108, 92, 231, 0.1);
  border: 1px solid rgba(108, 92, 231, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: 20px;
}

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

.hero-text p {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 500px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

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

.hero-mockup {
  width: 320px;
  height: 640px;
  background: var(--dark);
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-lg), 0 0 0 2px rgba(255,255,255,0.3);
  position: relative;
  transform: perspective(1000px) rotateY(-8deg) rotateX(2deg);
  transition: transform 0.5s ease;
}

.hero-mockup:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.hero-mockup-inner {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #6C5CE7 0%, #00CEC9 60%, #81ECEC 100%);
  border-radius: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  gap: 16px;
  overflow: hidden;
  position: relative;
}

.hero-mockup-inner .mock-icon {
  font-size: 3rem;
}

.hero-mockup-inner .mock-title {
  font-size: 1.4rem;
  font-weight: 700;
}

.hero-mockup-inner .mock-subtitle {
  font-size: 0.85rem;
  opacity: 0.8;
}

.hero-mockup-inner .mock-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 85%;
  margin-top: 20px;
}

.hero-mockup-inner .mock-card {
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-mockup-inner .mock-card-dot {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.3);
  border-radius: 10px;
  flex-shrink: 0;
}

.hero-mockup-inner .mock-card-lines {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.hero-mockup-inner .mock-card-line {
  height: 8px;
  background: rgba(255,255,255,0.3);
  border-radius: 4px;
}

.hero-mockup-inner .mock-card-line:last-child {
  width: 60%;
}

/* ===== About Section ===== */
.about {
  padding: 120px 0;
  background: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

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

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

.about-card {
  padding: 40px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
}

.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.about-card .card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.about-card:nth-child(1) .card-icon {
  background: rgba(108, 92, 231, 0.1);
}

.about-card:nth-child(2) .card-icon {
  background: rgba(0, 206, 201, 0.1);
}

.about-card:nth-child(3) .card-icon {
  background: rgba(253, 121, 168, 0.1);
}

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
}

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

/* ===== Apps Section ===== */
.apps {
  padding: 120px 0;
  background: var(--bg-light);
}

.coming-soon-wrapper {
  display: flex;
  justify-content: center;
}

.coming-soon-card {
  text-align: center;
  max-width: 560px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 64px 48px;
  border: 2px dashed var(--border);
  transition: var(--transition);
}

.coming-soon-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.coming-soon-icon {
  font-size: 3.5rem;
  margin-bottom: 24px;
  animation: float 3s ease-in-out infinite;
}

.coming-soon-card h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.coming-soon-card p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.coming-soon-card .btn {
  margin-top: 20px;
}

/* ===== Contact Section ===== */
.contact {
  padding: 120px 0;
  background: var(--white);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--text-light);
  margin-bottom: 40px;
  line-height: 1.7;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item .item-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item .item-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 4px;
}

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

.contact-form {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 40px;
}

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

.contact-form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 8px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--white);
  color: var(--text);
  transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

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

.contact-form .btn {
  width: 100%;
  justify-content: center;
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-links h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Privacy Page ===== */
.privacy-page {
  padding-top: 120px;
  padding-bottom: 80px;
  min-height: 100vh;
}

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

.privacy-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.privacy-content .last-updated {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 48px;
}

.privacy-content h2 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--dark);
  margin: 36px 0 16px;
}

.privacy-content p,
.privacy-content li {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

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

/* ===== Responsive ===== */
@media (max-width: 968px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
    padding-top: 120px;
    padding-bottom: 60px;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-text p {
    margin: 0 auto 36px;
  }

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

  .hero-visual {
    margin-top: 40px;
  }

  .hero-mockup {
    width: 260px;
    height: 520px;
    transform: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .coming-soon-card {
    padding: 48px 32px;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

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

  .mobile-menu-btn {
    display: flex;
  }

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

  .section-header h2 {
    font-size: 2rem;
  }

  .coming-soon-card {
    padding: 40px 24px;
  }
}