/* ========================================
   遇见桃花APP - 官网主样式文件
   域名: yujiantaohuaapp.com
   ======================================== */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #ff6b9d;
  --primary-dark: #e8527a;
  --primary-light: #ffa0be;
  --secondary: #c084fc;
  --accent: #fbbf24;
  --bg: #ffffff;
  --bg-light: #fdf2f8;
  --bg-dark: #1a1a2e;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --border: #f0e0e8;
  --shadow: rgba(255, 107, 157, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s ease;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--primary-dark);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px var(--shadow);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
}

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

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

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
  border-radius: 1px;
}

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

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

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff !important;
  padding: 8px 24px !important;
  border-radius: 50px;
  font-weight: 600 !important;
}

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

.nav-cta:hover {
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

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

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

/* ---------- Hero Section ---------- */
.hero {
  padding: calc(var(--header-height) + 80px) 0 80px;
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 157, 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(192, 132, 252, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.1), rgba(192, 132, 252, 0.1));
  color: var(--primary);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 107, 157, 0.2);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--text-light);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-phone {
  margin-top: 60px;
  position: relative;
}

.hero-phone img {
  max-width: 300px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px var(--shadow);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 15px rgba(255, 107, 157, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 107, 157, 0.4);
  color: #fff;
}

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

.btn-secondary:hover {
  background: var(--bg-light);
  transform: translateY(-2px);
  color: var(--primary);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.9rem;
}

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

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

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

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

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

.section-label {
  display: inline-block;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---------- Features ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px var(--shadow);
  border-color: var(--primary-light);
}

.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.1), rgba(192, 132, 252, 0.1));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ---------- About / Story ---------- */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 16px;
}

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

.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px var(--shadow);
}

/* ---------- Stats ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item {
  padding: 30px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

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

/* ---------- Download Section ---------- */
.download-section {
  text-align: center;
  background: linear-gradient(135deg, var(--bg-light) 0%, #fce4ec 50%, #f3e5f5 100%);
}

.download-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 40px;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-dark);
  color: #fff;
  padding: 16px 32px;
  border-radius: var(--radius);
  transition: var(--transition);
  min-width: 220px;
}

.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  color: #fff;
}

.download-btn-icon {
  font-size: 2rem;
}

.download-btn-text {
  text-align: left;
}

.download-btn-text small {
  display: block;
  font-size: 0.75rem;
  opacity: 0.8;
}

.download-btn-text strong {
  display: block;
  font-size: 1.1rem;
}

/* ---------- QR Code ---------- */
.qr-section {
  text-align: center;
  margin-top: 50px;
}

.qr-code {
  display: inline-block;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px var(--shadow);
}

.qr-code img {
  width: 180px;
  height: 180px;
}

.qr-code p {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.testimonial-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 30px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: 0 10px 30px var(--shadow);
}

.testimonial-stars {
  color: var(--accent);
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-light);
  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(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.95rem;
}

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

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

.faq-item {
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary-light);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-toggle {
  font-size: 1.5rem;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info-list {
  margin-top: 30px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.1), rgba(192, 132, 252, 0.1));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-info-text p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.contact-form {
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px var(--shadow);
}

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.1);
}

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

/* ---------- Legal Pages (Privacy / Terms) ---------- */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding-top: calc(var(--header-height) + 40px);
}

.legal-content h1 {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.legal-update-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.legal-content h2 {
  font-size: 1.4rem;
  margin: 32px 0 16px;
  color: var(--text);
}

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

.legal-content ul,
.legal-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-content li {
  list-style: disc;
  margin-bottom: 8px;
}

.legal-content ol li {
  list-style: decimal;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: #ccc;
  padding: 60px 0 30px;
}

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

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

.footer-brand p {
  color: #999;
  font-size: 0.9rem;
}

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

.footer-col a {
  display: block;
  color: #999;
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: #777;
  margin: 0;
}

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

.footer-links a {
  font-size: 0.85rem;
  color: #777;
}

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

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: calc(var(--header-height) + 20px) 0 20px;
  background: var(--bg-light);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.breadcrumb-list a {
  color: var(--text-muted);
}

.breadcrumb-list a:hover {
  color: var(--primary);
}

.breadcrumb-separator {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--primary);
  font-weight: 600;
}

/* ---------- Page Header ---------- */
.page-header {
  padding: 40px 0 60px;
  background: var(--bg-light);
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.page-header p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 15px rgba(255, 107, 157, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 107, 157, 0.4);
}

/* ---------- 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);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 10px 30px var(--shadow);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .hero {
    padding: calc(var(--header-height) + 40px) 0 60px;
  }

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

  .hero p {
    font-size: 1rem;
  }

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

  .about-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .section {
    padding: 50px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

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

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

  .page-header h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .contact-form {
    padding: 24px;
  }

  .stat-item {
    padding: 16px;
  }
}

/* ---------- Print ---------- */
@media print {
  .site-header,
  .site-footer,
  .back-to-top,
  .menu-toggle {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  .section {
    padding: 20px 0;
  }
}