:root {
  --primary-coral: #FF5E7E;
  --primary-orange: #FFA94D;
  --primary-teal: #12B886;
  --primary-blue: #339AF0;
  --primary-purple: #845EF7;
  --primary-yellow: #FFD43B;
  --bg-creamy: #FFF9F5;
  --bg-card: #FFFFFF;
  --text-main: #2B2D42;
  --text-muted: #6C757D;
  --text-light: #8D99AE;
  --border-light: #FFE3EC;
  --border-hover: #FFC0D3;
  --shadow-sm: 0 4px 12px rgba(255, 94, 126, 0.08);
  --shadow-md: 0 10px 25px rgba(255, 94, 126, 0.12);
  --shadow-lg: 0 20px 40px rgba(132, 94, 247, 0.15);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-creamy);
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

.site-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: 
    radial-gradient(circle at 10% 20%, rgba(255, 94, 126, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 10%, rgba(255, 212, 59, 0.07) 0%, transparent 35%),
    radial-gradient(circle at 80% 80%, rgba(18, 184, 134, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(132, 94, 247, 0.06) 0%, transparent 35%),
    #FFFDFB;
}

.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-light);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 76px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-container .ai-page-logo {
  height: 42px;
  width: auto;
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  background: linear-gradient(45deg, #FF5E7E, #845EF7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-coral);
  background: rgba(255, 94, 126, 0.08);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, #FF5E7E, #FF8E53);
  color: #FFFFFF;
  box-shadow: 0 4px 15px rgba(255, 94, 126, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(255, 94, 126, 0.5);
  color: #FFFFFF;
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--text-main);
  border: 2px solid var(--border-light);
}

.btn-secondary:hover {
  border-color: var(--primary-purple);
  color: var(--primary-purple);
  background: rgba(132, 94, 247, 0.05);
}

.btn-gradient {
  background: linear-gradient(135deg, #845EF7, #339AF0);
  color: #FFFFFF;
  box-shadow: 0 4px 15px rgba(132, 94, 247, 0.35);
}

.btn-gradient:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(132, 94, 247, 0.5);
  color: #FFFFFF;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-main);
}

/* Sections Global */
section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.badge-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.badge-pink {
  background: rgba(255, 94, 126, 0.12);
  color: var(--primary-coral);
  border: 1px solid rgba(255, 94, 126, 0.25);
}

.badge-purple {
  background: rgba(132, 94, 247, 0.12);
  color: var(--primary-purple);
  border: 1px solid rgba(132, 94, 247, 0.25);
}

.badge-teal {
  background: rgba(18, 184, 134, 0.12);
  color: var(--primary-teal);
  border: 1px solid rgba(18, 184, 134, 0.25);
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Hero Section (No Images as required) */
.hero-section {
  padding: 80px 0 60px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7) 0%, rgba(255, 249, 245, 0) 100%);
  text-align: center;
}

.hero-content {
  max-width: 880px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: 2px solid var(--border-light);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-purple);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-teal);
  box-shadow: 0 0 8px var(--primary-teal);
}

.hero-title {
  font-size: 44px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  color: var(--text-main);
  letter-spacing: -1px;
}

.hero-title span {
  background: linear-gradient(135deg, #FF5E7E, #FFA94D, #845EF7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.6;
}

.hero-btns {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.stat-item {
  background: #FFFFFF;
  border: 2px solid var(--border-light);
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary-coral);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary-coral);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

/* Candy Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.candy-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.candy-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.candy-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, #FF5E7E, #FFA94D);
  opacity: 0;
  transition: var(--transition);
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
  background: rgba(255, 94, 126, 0.1);
  color: var(--primary-coral);
}

.card-icon.purple {
  background: rgba(132, 94, 247, 0.1);
  color: var(--primary-purple);
}

.card-icon.teal {
  background: rgba(18, 184, 134, 0.1);
  color: var(--primary-teal);
}

.card-icon.blue {
  background: rgba(51, 154, 240, 0.1);
  color: var(--primary-blue);
}

.card-icon.orange {
  background: rgba(255, 169, 77, 0.1);
  color: var(--primary-orange);
}

.card-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.card-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

/* Models Cloud Tag */
.models-badge-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}

.model-tag {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
  transition: var(--transition);
}

.model-tag:hover {
  border-color: var(--primary-coral);
  color: var(--primary-coral);
  transform: translateY(-2px);
}

/* Comparison Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}

.compare-table th, .compare-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
}

.compare-table th {
  background: rgba(255, 94, 126, 0.04);
  font-weight: 800;
  color: var(--text-main);
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.highlight-col {
  background: rgba(255, 94, 126, 0.04);
  font-weight: 700;
  color: var(--primary-coral);
}

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #FF5E7E, #FFA94D);
  color: #FFFFFF;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 800;
}

/* Process Timeline */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-step {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  border: 2px solid var(--border-light);
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.process-step:hover {
  transform: translateY(-4px);
  border-color: var(--primary-purple);
}

.step-num {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #845EF7, #339AF0);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 16px;
}

/* Showcase & Media */
.media-showcase-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: center;
}

.showcase-banner-box {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 16px;
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.showcase-img-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 16/9;
  background: #F8F9FA;
  display: flex;
  align-items: center;
  justify-content: center;
}

.showcase-img-wrap.square {
  aspect-ratio: 1/1;
}

.showcase-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.showcase-img-wrap:hover img {
  transform: scale(1.05);
}

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

.testi-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 26px;
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.testi-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.testi-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF5E7E, #FFA94D);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.testi-name {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
}

.testi-role {
  font-size: 12px;
  color: var(--text-muted);
}

.testi-stars {
  color: #FFD43B;
  font-size: 14px;
  margin-bottom: 10px;
}

.testi-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ Accordion */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.faq-item {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 2px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

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

.faq-icon {
  font-size: 18px;
  font-weight: bold;
  transition: var(--transition);
  color: var(--primary-purple);
}

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

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  padding: 0 20px 18px 20px;
  max-height: 240px;
}

/* Form & Contact */
.contact-section-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-light);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.contact-info-col h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-main);
}

.contact-info-list {
  list-style: none;
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
}

.contact-info-item strong {
  color: var(--text-main);
}

.qr-box {
  margin-top: 20px;
  display: inline-block;
  padding: 12px;
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-md);
  text-align: center;
}

.qr-box img {
  width: 120px;
  height: 120px;
  display: block;
  margin: 0 auto 8px;
  border-radius: var(--radius-sm);
}

.qr-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 700;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border-light);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--primary-coral);
  box-shadow: 0 0 0 3px rgba(255, 94, 126, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* Articles and Links */
.articles-links-container {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-light);
  padding: 24px;
  margin-top: 30px;
}

.links-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

.links-cloud a {
  text-decoration: none;
  font-size: 13px;
  color: var(--text-muted);
  background: rgba(132, 94, 247, 0.05);
  border: 1px solid var(--border-light);
  padding: 6px 14px;
  border-radius: 50px;
  transition: var(--transition);
}

.links-cloud a:hover {
  background: var(--primary-purple);
  color: #FFFFFF;
  border-color: var(--primary-purple);
}

/* Footer */
footer {
  background: #FFFFFF;
  border-top: 2px solid var(--border-light);
  padding: 40px 0 30px;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

.footer-brand p {
  margin-top: 10px;
  max-width: 320px;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  color: var(--text-light);
}

/* Floating Widget */
.floating-widget {
  position: fixed;
  right: 20px;
  bottom: 30px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--primary-coral);
  text-decoration: none;
  font-size: 20px;
  transition: var(--transition);
}

.float-btn:hover {
  transform: scale(1.1);
  background: var(--primary-coral);
  color: #FFFFFF;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-title { font-size: 34px; }
  .cards-grid, .cards-grid-4, .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .media-showcase-grid { grid-template-columns: 1fr; }
  .contact-section-wrapper { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #FFFFFF;
    flex-direction: column;
    padding: 20px;
    border-bottom: 2px solid var(--border-light);
    box-shadow: var(--shadow-md);
  }
  .nav-links.active { display: flex; }
  .mobile-menu-btn { display: block; }
  .hero-title { font-size: 28px; }
  .cards-grid, .cards-grid-4, .testimonials-grid, .process-grid, .hero-stats-grid { grid-template-columns: 1fr; }
  .showcase-banner-box { grid-template-columns: 1fr; }
  .contact-section-wrapper { padding: 20px; }
}