/* ============================================
   0084 - 天蓝+云白 · 云端SaaS风
   HHpoker德州俱乐部 · 德扑圈游戏APP
   ============================================ */

:root {
  --sky: #38bdf8;
  --sky-dark: #0284c7;
  --sky-light: #e0f2fe;
  --sky-lighter: #f0f9ff;
  --white: #ffffff;
  --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: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--gray-50);
  color:var(--gray-800);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* === Navbar (Glassmorphism) === */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,0.8);
  backdrop-filter:blur(16px) saturate(180%);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid var(--gray-200);
}
.nav-container{
  max-width:1280px;margin:0 auto;padding:0 2rem;
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.nav-logo{
  display:flex;align-items:center;gap:0.6rem;
  text-decoration:none;font-size:1.2rem;font-weight:700;
  color:var(--gray-900);
}
.nav-logo .logo-mark{
  width:34px;height:34px;border-radius:8px;
  background:linear-gradient(135deg,var(--sky),var(--sky-dark));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:1rem;
}
.nav-links{display:flex;align-items:center;gap:2.2rem;list-style:none}
.nav-links a{
  text-decoration:none;color:var(--gray-500);font-weight:500;
  font-size:0.9rem;transition:var(--transition);
}
.nav-links a:hover{color:var(--gray-900)}
.nav-cta{
  background:linear-gradient(135deg,var(--sky),var(--sky-dark));
  color:#fff!important;padding:0.45rem 1.3rem!important;
  border-radius:10px;font-weight:600!important;
  box-shadow:0 4px 12px rgba(56,189,248,0.3);
  transition:var(--transition)!important;
}
.nav-cta:hover{box-shadow:0 6px 20px rgba(56,189,248,0.45);transform:translateY(-1px)}

/* Hamburger */
.hamburger{display:none;flex-direction:column;gap:4px;cursor:pointer;background:none;border:none;padding:4px}
.hamburger span{display:block;width:24px;height:2px;background:var(--gray-700);border-radius:2px;transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}

.mobile-menu{
  display:none;position:fixed;top:64px;left:0;right:0;bottom:0;
  background:rgba(255,255,255,0.96);backdrop-filter:blur(20px);
  z-index:999;flex-direction:column;align-items:center;
  justify-content:center;gap:2.2rem;
}
.mobile-menu.active{display:flex}
.mobile-menu a{text-decoration:none;color:var(--gray-700);font-size:1.15rem;font-weight:600}

/* === Hero === */
.hero{
  padding:140px 2rem 100px;
  text-align:center;position:relative;
  background:linear-gradient(180deg,var(--sky-lighter) 0%,var(--white) 100%);
  overflow:hidden;
}
/* 3D Floating elements */
.float-shapes{position:absolute;inset:0;pointer-events:none;z-index:0}
.float-shape{
  position:absolute;border-radius:50%;
  opacity:0.15;
  animation:float3D 8s ease-in-out infinite;
}
.float-shape:nth-child(1){
  width:80px;height:80px;background:var(--sky);
  top:15%;left:10%;
  animation-delay:0s;
}
.float-shape:nth-child(2){
  width:120px;height:120px;background:var(--sky-dark);
  top:20%;right:12%;
  animation-delay:2s;
}
.float-shape:nth-child(3){
  width:60px;height:60px;background:var(--sky);
  bottom:25%;left:15%;
  animation-delay:4s;
}
.float-shape:nth-child(4){
  width:100px;height:100px;background:var(--sky-dark);
  bottom:20%;right:10%;
  animation-delay:6s;
}
@keyframes float3D{
  0%,100%{transform:translateY(0) rotate(0deg) scale(1)}
  25%{transform:translateY(-30px) rotate(90deg) scale(1.1)}
  50%{transform:translateY(0) rotate(180deg) scale(1)}
  75%{transform:translateY(30px) rotate(270deg) scale(0.9)}
}

.hero-content{
  position:relative;z-index:2;max-width:800px;margin:0 auto;
}
.hero-badge{
  display:inline-block;background:var(--sky-light);
  color:var(--sky-dark);padding:0.3rem 1rem;
  border-radius:50px;font-size:0.85rem;font-weight:600;
  margin-bottom:1.5rem;
}
.hero-content h1{
  font-size:3.8rem;font-weight:900;line-height:1.15;
  margin-bottom:1rem;color:var(--gray-900);
}
.hero-content h1 .gradient-text{
  background:linear-gradient(135deg,var(--sky) 0%,var(--sky-dark) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-content .subtitle{
  font-size:1.2rem;color:var(--gray-500);max-width:550px;
  margin:0 auto 2.5rem;line-height:1.6;
}
.hero-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.btn-saas{
  display:inline-flex;align-items:center;gap:0.5rem;
  background:linear-gradient(135deg,var(--sky),var(--sky-dark));
  color:#fff;padding:0.8rem 2rem;border-radius:12px;
  font-weight:600;font-size:1rem;text-decoration:none;
  box-shadow:0 8px 24px rgba(56,189,248,0.35);
  transition:var(--transition);
}
.btn-saas:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(56,189,248,0.45)}
.btn-saas-ghost{
  display:inline-flex;align-items:center;gap:0.5rem;
  background:var(--white);color:var(--gray-700);
  padding:0.8rem 2rem;border-radius:12px;
  font-weight:600;font-size:1rem;text-decoration:none;
  border:1.5px solid var(--gray-200);
  transition:var(--transition);
}
.btn-saas-ghost:hover{border-color:var(--sky);color:var(--sky-dark);transform:translateY(-4px);box-shadow:var(--shadow-lg)}

/* === Sections === */
.section{padding:5rem 2rem}
.section-tag{
  text-align:center;color:var(--sky-dark);font-weight:600;
  font-size:0.85rem;margin-bottom:0.8rem;
}
.section-title{
  text-align:center;font-size:2.5rem;font-weight:800;
  color:var(--gray-900);margin-bottom:1rem;letter-spacing:-0.5px;
}
.section-sub{
  text-align:center;color:var(--gray-500);max-width:580px;
  margin:0 auto 3.5rem;font-size:1.05rem;
}

/* === Features === */
.features{background:var(--white)}
.features-grid{
  max-width:1100px;margin:0 auto;
  display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem;
}
.feat-card{
  background:var(--white);border-radius:24px;
  padding:2.5rem 2rem;text-align:center;
  box-shadow:var(--shadow);border:1px solid var(--gray-100);
  transition:var(--transition);position:relative;
}
.feat-card:hover{
  transform:translateY(-10px);
  box-shadow:var(--shadow-xl);
  border-color:var(--sky-light);
}
.feat-card .feat-icon{
  width:60px;height:60px;border-radius:16px;
  background:linear-gradient(135deg,var(--sky-light),var(--sky));
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 1.3rem;color:var(--sky-dark);font-size:1.4rem;
}
.feat-card h3{font-size:1.1rem;font-weight:700;color:var(--gray-900);margin-bottom:0.5rem}
.feat-card p{color:var(--gray-500);font-size:0.9rem;line-height:1.65}

/* === Stats === */
.stats{background:var(--sky-lighter)}
.stats-grid{
  max-width:1000px;margin:0 auto;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;
}
.stat-card{
  background:var(--white);border-radius:20px;
  padding:2rem 1.5rem;text-align:center;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);
  transition:var(--transition);
}
.stat-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.stat-number{font-size:3rem;font-weight:900;color:var(--sky-dark);line-height:1;margin-bottom:0.3rem}
.stat-label{color:var(--gray-500);font-size:0.85rem;font-weight:500}

/* === Testimonials === */
.testimonials{background:var(--white)}
.testimonial-grid{
  max-width:1000px;margin:0 auto;
  display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem;
}
.test-card{
  background:var(--white);border-radius:20px;
  padding:2rem;box-shadow:var(--shadow-sm);
  border:1px solid var(--gray-100);transition:var(--transition);
}
.test-card:hover{box-shadow:var(--shadow-lg)}
.test-card .stars{color:#f59e0b;margin-bottom:0.8rem;font-size:0.85rem}
.test-card .text{color:var(--gray-600);font-size:0.9rem;line-height:1.7;margin-bottom:1.2rem}
.test-card .author{display:flex;align-items:center;gap:0.8rem}
.test-card .author img{
  width:42px;height:42px;border-radius:50%;object-fit:cover;
  border:2px solid var(--gray-100);
}
.test-card .author .name{font-weight:700;color:var(--gray-900);font-size:0.9rem}
.test-card .author .role{color:var(--gray-400);font-size:0.8rem}

/* === FAQ === */
.faq{background:var(--gray-50)}
.faq-container{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--white);border-radius:14px;
  margin-bottom:0.6rem;overflow:hidden;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);
  transition:var(--transition);
}
.faq-item:hover{border-color:var(--gray-200)}
.faq-question{
  display:flex;align-items:center;gap:1rem;
  padding:1.1rem 1.5rem;cursor:pointer;
  font-weight:600;font-size:0.95rem;color:var(--gray-800);
  border:none;background:none;width:100%;text-align:left;
}
.faq-question .q-plus{
  width:26px;height:26px;border-radius:8px;
  background:var(--sky-light);color:var(--sky-dark);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:1rem;flex-shrink:0;
  transition:var(--transition);
}
.faq-item.active .faq-question .q-plus{
  background:var(--sky-dark);color:#fff;transform:rotate(45deg);
}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s,padding .4s}
.faq-item.active .faq-answer{max-height:300px}
.faq-answer-inner{
  padding:0 1.5rem 1.2rem 3.5rem;color:var(--gray-500);
  font-size:0.9rem;line-height:1.7;
}

/* === CTA === */
.cta{
  padding:7rem 2rem;text-align:center;position:relative;
  background:linear-gradient(135deg,var(--sky) 0%,var(--sky-dark) 100%);
  overflow:hidden;
}
.cta::before{
  content:'';position:absolute;
  width:600px;height:600px;border-radius:50%;
  background:rgba(255,255,255,0.05);
  top:-200px;right:-150px;
}
.cta-card{
  max-width:600px;margin:0 auto;
  background:var(--white);border-radius:24px;
  padding:3rem;box-shadow:var(--shadow-xl);
  position:relative;z-index:2;
}
.cta-card h2{font-size:2rem;font-weight:800;color:var(--gray-900);margin-bottom:0.8rem}
.cta-card p{color:var(--gray-500);margin-bottom:2rem;font-size:1rem}
.cta-card .btn-gradient{
  display:inline-flex;align-items:center;gap:0.5rem;
  background:linear-gradient(135deg,var(--sky),var(--sky-dark));
  color:#fff;padding:0.85rem 2.5rem;border-radius:12px;
  font-weight:700;font-size:1rem;text-decoration:none;
  box-shadow:0 8px 24px rgba(56,189,248,0.35);
  transition:var(--transition);
}
.cta-card .btn-gradient:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(56,189,248,0.5)}

/* === Footer === */
.footer{
  background:var(--gray-900);padding:4rem 2rem 2rem;
  color:rgba(255,255,255,0.6);
}
.footer-grid{
  max-width:1100px;margin:0 auto;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;
}
.footer-col h4{color:#fff;font-weight:700;font-size:0.95rem;margin-bottom:1rem}
.footer-col p,.footer-col a{
  color:rgba(255,255,255,0.5);font-size:0.9rem;text-decoration:none;
  display:block;margin-bottom:0.5rem;transition:var(--transition);
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  max-width:1100px;margin:2rem auto 0;padding-top:1.5rem;
  border-top:1px solid rgba(255,255,255,0.1);
  text-align:center;font-size:0.85rem;color:rgba(255,255,255,0.35);
}

/* === Responsive === */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}.hamburger{display:flex}
  .hero-content h1{font-size:2.4rem}
  .features-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .testimonial-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .section-title{font-size:1.9rem}
}