/* ===== 五伦心语 v2 全局样式 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#2E5090;--primary-light:#4A7BC7;--primary-dark:#1B3A6B;
  --accent:#D4574B;--accent-light:#E8786E;
  --gold:#D4A853;--gold-light:#F0D48A;
  --bg:#F7F8FC;--white:#FFF;--text:#2D3436;--text-light:#636E72;--border:#E8ECF1;
  --shadow:0 4px 20px rgba(46,80,144,.08);--shadow-lg:0 8px 40px rgba(46,80,144,.12);
  --radius:12px;--radius-lg:20px;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;color:var(--text);line-height:1.6;background:var(--bg);overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 导航栏 ===== */
.navbar{background:rgba(255,255,255,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:0 0;position:fixed;top:0;left:0;right:0;z-index:1000;box-shadow:0 1px 0 var(--border);transition:var(--transition)}
.navbar.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.08);background:rgba(255,255,255,.98)}
.navbar .container{display:flex;justify-content:space-between;align-items:center;height:64px}
.logo{font-size:22px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:8px}
.logo span{background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-links a{padding:8px 18px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text-light);transition:var(--transition);position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--primary);background:rgba(46,80,144,.06)}
.nav-links a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:2px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:25px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:var(--transition)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);box-shadow:0 4px 15px rgba(46,80,144,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(46,80,144,.35)}
.btn-secondary{background:var(--white);color:var(--primary);border:2px solid var(--primary)}
.btn-secondary:hover{background:var(--primary);color:var(--white)}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-light));color:var(--white)}
.btn-lg{padding:14px 36px;font-size:17px;border-radius:30px}
.btn-sm{padding:6px 16px;font-size:13px;border-radius:16px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--text);transition:var(--transition);border-radius:2px}

/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding:80px 0 60px}
.hero-bg{position:absolute;inset:0;background:linear-gradient(160deg,#1B3A6B 0%,#2E5090 35%,#4A7BC7 70%,#6B9FE8 100%)}
.hero-bg::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='0.03'%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")}
.hero-content{position:relative;z-index:1;color:var(--white);max-width:700px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);backdrop-filter:blur(10px);padding:8px 20px;border-radius:30px;font-size:14px;margin-bottom:24px;border:1px solid rgba(255,255,255,.15)}
.hero-badge .dot{width:8px;height:8px;background:#4ADE80;border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:52px;font-weight:800;line-height:1.2;margin-bottom:20px;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-desc{font-size:18px;line-height:1.8;opacity:.9;margin-bottom:36px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:48px;margin-top:60px;padding-top:40px;border-top:1px solid rgba(255,255,255,.15)}
.stat-item{text-align:center}
.stat-num{font-size:36px;font-weight:800}
.stat-label{font-size:13px;opacity:.7;margin-top:4px}
.hero-illustration{position:absolute;right:-60px;top:50%;transform:translateY(-50%);width:520px;height:520px;z-index:1}
.hero-circle{position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.1)}
.hero-circle:nth-child(1){width:400px;height:400px;top:60px;right:60px}
.hero-circle:nth-child(2){width:300px;height:300px;top:110px;right:110px;background:rgba(255,255,255,.03)}
.hero-circle:nth-child(3){width:200px;height:200px;top:160px;right:160px;border-style:dashed}
.hero-float{position:absolute;background:rgba(255,255,255,.1);backdrop-filter:blur(10px);padding:16px 20px;border-radius:var(--radius);border:1px solid rgba(255,255,255,.12);animation:float 6s ease-in-out infinite}
.hero-float:nth-child(4){top:80px;right:100px;animation-delay:0s}
.hero-float:nth-child(5){top:280px;right:60px;animation-delay:2s}
.hero-float:nth-child(6){top:400px;right:140px;animation-delay:4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-15px)}}
.float-icon{font-size:28px;margin-bottom:6px}
.float-text{font-size:12px;opacity:.85}

/* ===== Section通用 ===== */
.section{padding:100px 0}
.section-header{text-align:center;margin-bottom:60px}
.section-header .tag{display:inline-block;padding:6px 16px;background:rgba(46,80,144,.08);color:var(--primary);border-radius:20px;font-size:13px;font-weight:600;margin-bottom:12px}
.section-header h2{font-size:36px;font-weight:700;color:var(--text);margin-bottom:16px}
.section-header p{font-size:16px;color:var(--text-light);max-width:600px;margin:0 auto}

/* ===== 功能卡片 ===== */
.features{background:var(--white)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--bg);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;transition:var(--transition);border:1px solid transparent;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(46,80,144,.1);background:var(--white)}
.feature-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:32px;margin:0 auto 20px;background:linear-gradient(135deg,rgba(46,80,144,.08),rgba(74,123,199,.12))}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text)}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.7}

/* ===== 场景 ===== */
.scenarios{background:var(--bg)}
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.scenario-card{background:var(--white);border-radius:var(--radius-lg);padding:40px 32px;transition:var(--transition);border-left:4px solid transparent;position:relative}
.scenario-card:hover{border-left-color:var(--primary);box-shadow:var(--shadow);transform:translateX(4px)}
.scenario-num{position:absolute;top:20px;right:20px;font-size:48px;font-weight:800;color:rgba(46,80,144,.06)}
.scenario-icon{font-size:40px;margin-bottom:16px}
.scenario-card h3{font-size:20px;font-weight:700;margin-bottom:12px;color:var(--text)}
.scenario-card p{font-size:14px;color:var(--text-light);line-height:1.7}
.scenario-tag{display:inline-block;margin-top:16px;padding:4px 12px;background:rgba(46,80,144,.06);color:var(--primary);border-radius:12px;font-size:12px;font-weight:600}

/* ===== 用户评价 ===== */
.testimonials{background:var(--white);overflow:hidden}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{background:var(--bg);border-radius:var(--radius-lg);padding:32px;transition:var(--transition);position:relative}
.testimonial-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.testimonial-stars{color:var(--gold);font-size:14px;margin-bottom:16px;letter-spacing:2px}
.testimonial-text{font-size:15px;line-height:1.8;color:var(--text);margin-bottom:20px;position:relative;padding-left:16px;border-left:3px solid var(--primary-light)}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:var(--white);font-size:18px;font-weight:700}
.testimonial-info .name{font-size:15px;font-weight:600;color:var(--text)}
.testimonial-info .role{font-size:12px;color:var(--text-light)}

/* ===== 价格 ===== */
.pricing-section{background:var(--bg)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1000px;margin:0 auto}
.pricing-card{background:var(--white);border-radius:var(--radius-lg);padding:40px 32px;text-align:center;transition:var(--transition);position:relative;border:2px solid transparent}
.pricing-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.pricing-card.popular{border-color:var(--primary);transform:scale(1.04)}
.pricing-card.popular:hover{transform:scale(1.04) translateY(-8px)}
.popular-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);padding:6px 24px;border-radius:20px;font-size:13px;font-weight:600;white-space:nowrap}
.pricing-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.pricing-desc{font-size:13px;color:var(--text-light);margin-bottom:24px}
.pricing-price{font-size:44px;font-weight:800;color:var(--text);margin-bottom:4px}
.pricing-price span{font-size:16px;font-weight:400;color:var(--text-light)}
.pricing-features{list-style:none;text-align:left;margin:28px 0}
.pricing-features li{padding:10px 0;font-size:14px;color:var(--text);display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.pricing-features li:last-child{border:none}
.pricing-features .check{color:#4ADE80;font-weight:700}
.pricing-features .cross{color:#ccc}

/* ===== CTA ===== */
.cta-section{background:linear-gradient(160deg,#1B3A6B,#2E5090,#4A7BC7);color:var(--white);text-align:center;padding:80px 0}
.cta-section h2{font-size:36px;font-weight:700;margin-bottom:16px}
.cta-section p{font-size:18px;opacity:.85;margin-bottom:36px}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-buttons .btn{font-size:17px;padding:14px 36px}
.btn-white{background:var(--white);color:var(--primary)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(0,0,0,.2)}
.btn-outline-white{background:transparent;color:var(--white);border:2px solid rgba(255,255,255,.4)}
.btn-outline-white:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6)}

/* ===== Footer ===== */
.footer{background:#1A1A2E;color:rgba(255,255,255,.7);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand{max-width:300px}
.footer-brand .logo{color:var(--white);margin-bottom:16px;font-size:24px}
.footer-brand p{font-size:14px;line-height:1.7;opacity:.7}
.footer h4{color:var(--white);font-size:15px;font-weight:600;margin-bottom:20px}
.footer-links a{display:block;font-size:14px;padding:6px 0;opacity:.7;transition:var(--transition)}
.footer-links a:hover{opacity:1;color:var(--gold)}
.footer-contact p{font-size:14px;padding:6px 0;display:flex;align-items:center;gap:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:13px;opacity:.5}
.footer-bottom a{color:inherit;transition:opacity .3s}
.footer-bottom a:hover{opacity:1}
.footer-qr{display:flex;gap:20px}
.footer-qr-item{text-align:center}
.footer-qr-item .qr-placeholder{width:100px;height:100px;background:rgba(255,255,255,.08);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:32px;margin-bottom:8px;border:1px dashed rgba(255,255,255,.15)}
.footer-qr-item .qr-text{font-size:12px}

/* ===== 动画 ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.animate{opacity:0;transform:translateY(30px);transition:all .8s cubic-bezier(.4,0,.2,1)}
.animate.visible{opacity:1;transform:translateY(0)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .hero-illustration{display:none}
  .hero h1{font-size:40px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none;position:fixed;top:64px;left:0;right:0;background:var(--white);flex-direction:column;padding:20px;box-shadow:var(--shadow-lg);gap:4px}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 20px;border-radius:8px;font-size:16px;width:100%}
  .hamburger{display:flex}
  .hero{min-height:auto;padding:100px 0 60px}
  .hero h1{font-size:32px}
  .hero-stats{flex-direction:column;gap:24px;align-items:flex-start}
  .features-grid{grid-template-columns:1fr}
  .scenarios-grid{grid-template-columns:1fr}
  .testimonials-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr;max-width:400px}
  .pricing-card.popular{transform:none}
  .pricing-card.popular:hover{transform:translateY(-8px)}
  .section{padding:60px 0}
  .section-header h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
  .footer-qr{justify-content:center}
}
@media(max-width:480px){
  .hero h1{font-size:28px}
  .hero-desc{font-size:16px}
  .btn-lg{padding:12px 28px;font-size:15px}
  .container{padding:0 16px}
}