/* ============================================================
   HHpoker俱乐部丨德扑圈App下载丨HHpoker官网 - Custom Styles
   Project 0052 - Single Page Landing
   ============================================================ */

/* --- Custom Font Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #6366f1;
  --primary-50: #eef2ff;
  --primary-100: #e0e7ff;
  --primary-200: #c7d2fe;
  --primary-500: #6366f1;
  --primary-600: #4f46e5;
  --primary-700: #4338ca;
  --primary-800: #3730a3;
  --secondary: #f59e0b;
  --accent: #10b981;
  --dark: #0f172a;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --shadow-sm: 0 1px 2px 0 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);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --glass-bg: rgba(255,255,255,0.8);
  --glass-border: rgba(255,255,255,0.3);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.06);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-800);
  background-color: #ffffff;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Glass Navbar --- */
.glass-nav {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  box-shadow: var(--glass-shadow);
  transition: all 0.3s ease;
}

.glass-nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* --- Logo --- */
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  border-radius: 10px;
  color: white;
  font-size: 20px;
  margin-right: 10px;
}

.logo-text {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--gray-900);
  letter-spacing: -0.5px;
}

/* --- Mobile Menu --- */
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  padding: 1rem;
  box-shadow: var(--shadow-xl);
  z-index: 100;
}

.mobile-menu.active {
  display: block;
}

/* --- Hero Section --- */
.hero-gradient {
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 30%, #f5f3ff 60%, #ede9fe 100%);
  position: relative;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79,70,229,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-gradient::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: white;
  border: 1px solid var(--primary-200);
  border-radius: 9999px;
  padding: 0.375rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-700);
  box-shadow: var(--shadow-sm);
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.5); }
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--gray-900);
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--primary-600), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 540px;
  line-height: 1.8;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-3xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  transform: perspective(1000px) rotateY(-2deg);
  transition: transform 0.3s ease;
}

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

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-3xl);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: white;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(79,70,229,0.35);
  text-decoration: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
  box-shadow: 0 6px 25px rgba(79,70,229,0.45);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background: white;
  color: var(--primary-700);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 9999px;
  border: 2px solid var(--primary-200);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-outline:hover {
  border-color: var(--primary-600);
  background: var(--primary-50);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* --- Section Layout --- */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-600);
  background: var(--primary-50);
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- Feature Cards --- */
.feature-card {
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-2xl);
  padding: 2rem 1.75rem;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-500), #7c3aed);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-100);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  color: var(--primary-600);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon-circle {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: white;
  transform: rotate(-5deg) scale(1.08);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.65;
}

/* --- Stats Section --- */
.stats-section {
  background: linear-gradient(135deg, var(--primary-600), #7c3aed);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.stat-card {
  text-align: center;
  padding: 2rem 1rem;
}

.stat-number {
  font-size: clamp(2.25rem, 4vw, 3rem);
  font-weight: 900;
  color: white;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}

/* --- Testimonial Cards --- */
.testimonial-card {
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-2xl);
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
}

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

.testimonial-card::after {
  content: '\201C';
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 4rem;
  color: var(--primary-100);
  font-family: serif;
  line-height: 1;
  pointer-events: none;
}

.avatar-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-500), #7c3aed);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.stars {
  color: #f59e0b;
  font-size: 1rem;
  letter-spacing: 2px;
}

/* --- FAQ Accordion --- */
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-2xl);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: all 0.3s ease;
  background: white;
}

.faq-item:hover {
  border-color: var(--primary-200);
}

.faq-item > summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--gray-800);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-item > summary::-webkit-details-marker {
  display: none;
}

.faq-item > summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.875rem;
  color: var(--gray-400);
  transition: transform 0.3s ease;
}

.faq-item[open] > summary::after {
  transform: rotate(180deg);
  color: var(--primary-600);
}

.faq-item[open] > summary {
  color: var(--primary-700);
}

.faq-item > .faq-content {
  padding: 0 1.5rem 1.25rem;
  color: var(--gray-600);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--primary-600) 0%, #7c3aed 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* --- Footer --- */
.footer-dark {
  background: var(--gray-900);
  color: var(--gray-400);
}

.footer-dark a {
  color: var(--gray-400);
  transition: color 0.2s ease;
}

.footer-dark a:hover {
  color: white;
}

.footer-heading {
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: white;
  margin-bottom: 1rem;
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--primary-600);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-700);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* --- Pulse animation for CTA button --- */
@keyframes cta-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255,255,255,0.4); }
  70% { box-shadow: 0 0 0 20px rgba(255,255,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}

.pulse-ring {
  animation: cta-pulse 2s infinite;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .section-padding { padding: 4rem 0; }
}

@media (max-width: 768px) {
  .section-padding { padding: 3rem 0; }
  .section-title { font-size: 1.75rem; }
  .section-header { margin-bottom: 2.5rem; }
  .hero-title { font-size: 1.875rem; }
  .hero-desc { font-size: 1rem; }
  .back-to-top { bottom: 1.25rem; right: 1.25rem; width: 42px; height: 42px; }
}

@media (max-width: 640px) {
  .section-padding { padding: 2.5rem 0; }
  .section-title { font-size: 1.5rem; }
}