/* ===== Project 0015: 德扑圈APP官网丨HHpoker俱乐部 - Custom Styles ===== */

:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --primary-bg: #eef2ff;
  --accent: #f97316;
  --dark: #18181b;
  --gray: #71717a;
  --light: #fafafa;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.06);
  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.04);
  transition: var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.4rem; font-weight: 800; color: var(--primary);
  text-decoration: none; letter-spacing: -0.5px;
}
.logo i { font-size: 1.6rem; }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  text-decoration: none; color: var(--dark); font-weight: 500;
  font-size: 0.95rem; transition: var(--transition); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--accent); transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: var(--accent); color: var(--white) !important;
  padding: 10px 26px; border-radius: 50px; font-weight: 600 !important;
}
.nav-cta:hover { background: #ea580c; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; padding: 4px; }
.hamburger span { display: block; width: 26px; height: 2.5px; background: var(--dark); border-radius: 2px; transition: var(--transition); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,0.98); backdrop-filter: blur(20px);
  z-index: 999; flex-direction: column; align-items: center; justify-content: center; gap: 32px;
}
.mobile-menu.active { display: flex; }
.mobile-menu a { text-decoration: none; color: var(--dark); font-size: 1.3rem; font-weight: 600; transition: var(--transition); }
.mobile-menu a:hover { color: var(--primary); }

/* ===== Hero ===== */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 25%, #fff7ed 60%, #fef2f2 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -200px; right: -200px;
  width: 650px; height: 650px;
  background: radial-gradient(circle, rgba(249,115,22,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content h1 { font-size: 3.2rem; font-weight: 800; line-height: 1.15; color: var(--dark); margin-bottom: 20px; letter-spacing: -1px; }
.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-content p { font-size: 1.15rem; color: var(--gray); margin-bottom: 36px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 15px 34px; border-radius: 50px; font-weight: 600;
  font-size: 1rem; text-decoration: none; transition: var(--transition);
  cursor: pointer; border: none; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 14px rgba(79,70,229,0.35); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(79,70,229,0.45); }
.btn-outline { background: var(--white); color: var(--primary); border: 2px solid #c7d2fe; }
.btn-outline:hover { background: var(--primary-bg); transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--white); box-shadow: 0 4px 14px rgba(249,115,22,0.35); }
.btn-accent:hover { background: #ea580c; transform: translateY(-2px); }
.hero-image img {
  max-width: 100%; height: auto; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  transform: perspective(1000px) rotateY(-3deg); transition: var(--transition);
}
.hero-image img:hover { transform: perspective(1000px) rotateY(0deg); }

.hero-badge {
  position: absolute; background: var(--white); padding: 12px 20px;
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  font-weight: 600; font-size: 0.9rem; display: flex; align-items: center; gap: 8px;
}
.hero-badge i { color: var(--accent); }
.hero-badge.top { top: -10px; right: -20px; }
.hero-badge.bottom { bottom: 30px; left: -30px; }

/* ===== Section Common ===== */
.section { padding: 90px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label {
  display: inline-block; background: var(--primary-bg); color: var(--primary);
  padding: 6px 18px; border-radius: 50px; font-weight: 600;
  font-size: 0.85rem; margin-bottom: 16px; letter-spacing: 1px; text-transform: uppercase;
}
.section-header h2 { font-size: 2.5rem; font-weight: 800; color: var(--dark); margin-bottom: 14px; letter-spacing: -0.5px; }
.section-header p { font-size: 1.1rem; color: var(--gray); max-width: 600px; margin: 0 auto; }

/* ===== Features ===== */
.features { background: var(--light); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
  background: var(--white); padding: 40px 30px; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); text-align: center;
  border: 1px solid rgba(0,0,0,0.03); position: relative; overflow: hidden;
  transition: var(--transition);
}
.feature-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transition: var(--transition);
}
.feature-card:hover { transform: translateY(-8px) scale(1.02); box-shadow: var(--shadow-xl); }
.feature-card:hover::after { transform: scaleX(1); }
.feature-icon {
  width: 74px; height: 74px; background: var(--primary-bg); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 22px; font-size: 1.9rem; color: var(--primary); transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--accent); color: var(--white); transform: scale(1.1) rotate(-5deg); }
.feature-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; color: var(--dark); }
.feature-card p { color: var(--gray); font-size: 0.95rem; line-height: 1.7; }

/* ===== Stats ===== */
.stats {
  background: linear-gradient(135deg, #312e81, #4f46e5);
  color: var(--white); padding: 70px 0; position: relative; overflow: hidden;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; position: relative; z-index: 1; }
.stat-item { padding: 20px; }
.stat-number { font-size: 3.2rem; font-weight: 800; margin-bottom: 6px; letter-spacing: -1px; }
.stat-label { font-size: 1rem; opacity: 0.85; font-weight: 500; }

/* ===== Testimonials ===== */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.testimonial-card {
  background: var(--light); padding: 34px 30px; border-radius: var(--radius);
  transition: var(--transition); border: 1px solid rgba(0,0,0,0.04);
  position: relative;
}
.testimonial-card::before {
  content: '\201C'; position: absolute; top: 10px; left: 20px;
  font-size: 4rem; color: var(--primary); opacity: 0.1; font-family: serif; line-height: 1;
}
.testimonial-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); background: var(--white); }
.testimonial-stars { color: var(--accent); margin-bottom: 14px; font-size: 0.9rem; }
.testimonial-text { color: var(--dark); font-size: 0.95rem; line-height: 1.8; margin-bottom: 20px; position: relative; z-index: 1; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-author img { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; }
.testimonial-author h4 { font-size: 0.95rem; font-weight: 700; color: var(--dark); }
.testimonial-author span { font-size: 0.8rem; color: var(--gray); }

/* ===== FAQ ===== */
.faq { background: var(--light); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--white); border-radius: var(--radius-sm);
  border: 1px solid rgba(0,0,0,0.05); overflow: hidden; transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); }
.faq-question {
  padding: 22px 28px; display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; font-weight: 600; font-size: 1.05rem; color: var(--dark);
  user-select: none; transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question i { transition: var(--transition); color: var(--gray); font-size: 0.85rem; }
.faq-item.active .faq-question { color: var(--accent); }
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--accent); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 28px 22px; color: var(--gray); font-size: 0.95rem; line-height: 1.8; }

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, #4f46e5, #f97316);
  padding: 80px 0; text-align: center; position: relative; overflow: hidden;
}
.cta-banner h2 { font-size: 2.8rem; font-weight: 800; color: var(--white); margin-bottom: 14px; }
.cta-banner p { font-size: 1.15rem; color: rgba(255,255,255,0.85); margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ===== Footer ===== */
.footer {
  background: var(--dark); color: rgba(255,255,255,0.7); padding: 60px 0 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h4 { color: var(--white); font-weight: 700; font-size: 1.05rem; margin-bottom: 20px; }
.footer-col p { font-size: 0.9rem; line-height: 1.8; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.85rem; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-content h1 { font-size: 2.5rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; } .hamburger { display: flex; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-content h1 { font-size: 2rem; }
  .hero-image { order: -1; } .hero-image img { max-width: 80%; }
  .hero-buttons { justify-content: center; }
  .hero-badge { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat-number { font-size: 2.2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .section-header h2 { font-size: 1.8rem; }
  .cta-banner h2 { font-size: 2rem; }
}
@media (max-width: 480px) {
  .hero { padding: 120px 0 50px; }
  .hero-content h1 { font-size: 1.7rem; }
  .stats-grid { grid-template-columns: 1fr; }
}