/* roulang page: index */
:root{
  --primary:#FF4D24;
  --primary-end:#7C3AED;
  --accent:#00C48C;
  --warning:#FFB800;
  --bg:#F7F5F2;
  --card:#FFFFFF;
  --dark:#14141F;
  --text:#1A1A2E;
  --text-secondary:#666680;
  --text-muted:#9CA3AF;
  --border:#F0F0F0;
  --radius-lg:24px;
  --radius-md:20px;
  --radius-btn:12px;
  --radius-badge:8px;
  --shadow:0 8px 30px rgba(20,20,31,0.08);
  --shadow-hover:0 12px 40px rgba(20,20,31,0.14);
  --gradient:linear-gradient(135deg,#FF4D24 0%,#7C3AED 100%);
  --gradient-soft:linear-gradient(135deg,rgba(255,77,36,0.08) 0%,rgba(124,58,237,0.08) 100%);
  --container:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate","Barlow Condensed",tabular-nums,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-cn);background:var(--bg);color:var(--text);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
ul,ol{list-style:none;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:90px 0;}
.section-label{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--primary);text-transform:uppercase;margin-bottom:8px;}
.section-title{font-size:32px;font-weight:800;letter-spacing:-0.5px;line-height:1.3;margin-bottom:12px;}
.section-sub{font-size:16px;color:var(--text-secondary);max-width:640px;line-height:1.7;}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:14px 28px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;transition:all 0.3s ease;line-height:1;}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 20px rgba(255,77,36,0.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(255,77,36,0.4);filter:brightness(1.1);}
.btn-primary:active{transform:scale(0.97);}
.btn-secondary{background:#fff;color:var(--text);border:1px solid #e0e0e0;}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);}
.btn-secondary:active{transform:scale(0.97);}
.btn-dark{background:var(--dark);color:#fff;}
.btn-dark:hover{background:#2a2a3a;transform:translateY(-2px);}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--radius-badge);font-size:12px;font-weight:700;}
.badge-hot{background:linear-gradient(135deg,#FF4D24,#f06595);color:#fff;animation:pulse 2s infinite;}
.badge-new{background:var(--gradient);color:#fff;}
.badge-accent{background:rgba(0,196,140,0.12);color:#00997a;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:0.8;}}
/* ===== Header / Nav ===== */
.site-header{position:fixed;top:0;left:0;right:0;height:72px;background:rgba(20,20,31,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,0.08);z-index:1000;}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-icon{width:38px;height:38px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;}
.logo-icon svg{width:20px;height:20px;}
.logo-text{font-size:20px;font-weight:800;color:#fff;letter-spacing:-0.5px;white-space:nowrap;}
.logo-text span{color:var(--primary);}
.nav-links{display:flex;gap:32px;align-items:center;}
.nav-links a{font-size:15px;color:rgba(255,255,255,0.7);padding:8px 0;position:relative;transition:color 0.3s;white-space:nowrap;}
.nav-links a:hover{color:#fff;}
.nav-links a.active{color:#fff;font-weight:700;}
.nav-links a.active::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--primary);border-radius:2px;}
.nav-right{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.nav-countdown{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,0.08);padding:6px 12px;border-radius:20px;font-size:12px;color:rgba(255,255,255,0.7);}
.nav-countdown .cd-label{color:rgba(255,255,255,0.6);}
.nav-countdown .cd-nums{font-family:var(--font-num);color:var(--warning);font-weight:700;letter-spacing:0.5px;font-size:14px;}
.nav-cta-btn{padding:10px 20px;border-radius:var(--radius-btn);background:var(--gradient);color:#fff;font-size:14px;font-weight:700;transition:all 0.3s;min-height:0;}
.nav-cta-btn:hover{transform:translateY(-1px);filter:brightness(1.1);box-shadow:0 4px 16px rgba(255,77,36,0.35);}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;background:none;border:none;}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:all 0.3s;}
@media(max-width:1024px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--dark);flex-direction:column;gap:0;padding:8px 24px 20px;border-bottom:1px solid rgba(255,255,255,0.08);}
  .nav-links.open{display:flex;}
  .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid rgba(255,255,255,0.06);font-size:15px;}
  .nav-links a:last-child{border-bottom:none;}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{color:var(--primary);}
  .nav-toggle{display:flex;}
  .nav-countdown{display:none;}
  .nav-cta-btn{padding:10px 16px;font-size:13px;}
}
/* ===== Hero ===== */
.hero{position:relative;padding:160px 0 120px;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;overflow:hidden;}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(20,20,31,0.92) 0%,rgba(20,20,31,0.78) 60%,rgba(20,20,31,0.6) 100%);}
.hero::after{content:'';position:absolute;right:-200px;top:-150px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(255,77,36,0.08) 0%,transparent 65%);pointer-events:none;}
.hero .container{position:relative;z-index:2;}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.hero-text h1{font-size:54px;font-weight:800;color:#fff;line-height:1.15;letter-spacing:-1px;margin-bottom:20px;}
.hero-text h1 .gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.hero-text p.hero-sub{font-size:18px;color:rgba(255,255,255,0.75);line-height:1.7;max-width:480px;margin-bottom:32px;}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;}
.hero-img{width:100%;max-width:420px;border-radius:var(--radius-lg);box-shadow:0 20px 60px rgba(0,0,0,0.4);aspect-ratio:4/4;object-fit:cover;}
.hero-floating-badge{position:absolute;top:24px;right:10px;background:var(--gradient);color:#fff;padding:8px 16px;border-radius:20px;font-size:13px;font-weight:700;box-shadow:0 4px 16px rgba(255,77,36,0.4);}
.hero-data-bar{position:relative;z-index:3;margin-top:-60px;}
.hero-data-bar .container{}
.data-badges{background:#fff;border-radius:16px;box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);padding:24px 32px;gap:24px;}
.data-badge{display:flex;align-items:center;gap:14px;}
.data-badge .num{font-family:var(--font-num);font-size:40px;font-weight:800;line-height:1;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap;}
.data-badge .unit{font-size:14px;color:var(--text-secondary);line-height:1.3;}
@media(max-width:1024px){
  .hero{padding:140px 0 100px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-text h1{font-size:40px;}
  .hero-visual{order:-1;}
  .hero-img{max-width:300px;}
}
@media(max-width:768px){
  .hero{padding:120px 0 80px;}
  .hero-text h1{font-size:32px;}
  .hero-text p.hero-sub{font-size:16px;}
  .data-badges{grid-template-columns:repeat(2,1fr);gap:20px;padding:20px;}
  .data-badge .num{font-size:30px;}
}
@media(max-width:520px){
  .data-badges{grid-template-columns:1fr 1fr;gap:16px;padding:16px;}
  .data-badge .num{font-size:26px;}
}
/* ===== Features ===== */
.features{background:var(--bg);}
.features-header{text-align:center;max-width:640px;margin:0 auto 56px;}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.feature-card{background:var(--card);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border);box-shadow:var(--shadow);transition:all 0.35s ease;}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:rgba(255,77,36,0.3);}
.feature-icon{width:64px;height:64px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:20px;font-size:24px;}
.feature-card:nth-child(2) .feature-icon{background:linear-gradient(135deg,#FF4D24,#FFB800);}
.feature-card:nth-child(3) .feature-icon{background:linear-gradient(135deg,#7C3AED,#00C48C);}
.feature-card:nth-child(4) .feature-icon{background:linear-gradient(135deg,#00C48C,#7C3AED);}
.feature-card:nth-child(5) .feature-icon{background:linear-gradient(135deg,#FFB800,#FF4D24);}
.feature-card:nth-child(6) .feature-icon{background:linear-gradient(135deg,#7C3AED,#FF4D24);}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:8px;letter-spacing:-0.3px;}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:16px;}
.feature-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:gap 0.3s;}
.feature-link:hover{gap:10px;}
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
  .features-grid{grid-template-columns:1fr;gap:20px;}
  .section{padding:50px 0;}
  .section-title{font-size:26px;}
}
/* ===== Scenarios ===== */
.scenarios{padding:90px 0;background:var(--bg);}
.scenarios-header{text-align:center;max-width:640px;margin:0 auto 56px;}
.scenario-block{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:70px;}
.scenario-block:last-child{margin-bottom:0;}
.scenario-block.reverse .scenario-media{order:2;}
.scenario-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow);}
.scenario-media img{width:100%;height:100%;object-fit:cover;}
.scenario-media::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(20,20,31,0.15),transparent);pointer-events:none;}
.scenario-content{padding:20px 0;}
.scenario-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;}
.scenario-tags span{background:var(--dark);color:#fff;font-size:12px;padding:5px 14px;border-radius:20px;display:inline-flex;align-items:center;gap:6px;}
.scenario-tags span::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);}
.scenario-content h3{font-size:28px;font-weight:800;margin-bottom:16px;letter-spacing:-0.5px;line-height:1.3;}
.scenario-content p{color:var(--text-secondary);line-height:1.75;margin-bottom:20px;max-width:440px;}
@media(max-width:1024px){
  .scenario-block{grid-template-columns:1fr;gap:32px;margin-bottom:50px;}
  .scenario-block.reverse .scenario-media{order:0;}
}
@media(max-width:768px){
  .scenarios{padding:50px 0;}
  .scenario-content h3{font-size:22px;}
}
/* ===== Cases ===== */
.cases{padding:90px 0;background:#fff;}
.cases-header{text-align:center;max-width:640px;margin:0 auto 56px;}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.case-card{background:var(--card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);transition:all 0.35s ease;}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-color:rgba(255,77,36,0.2);}
.case-cover{aspect-ratio:16/10;overflow:hidden;background:#f0f0f0;}
.case-cover img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease;}
.case-card:hover .case-cover img{transform:scale(1.05);}
.case-body{padding:24px 24px 28px;}
.case-body h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.case-body p{font-size:14px;color:var(--text-secondary);line-height:1.65;margin-bottom:18px;}
.case-metric{display:inline-flex;align-items:center;gap:6px;background:rgba(0,196,140,0.1);color:#00997a;font-weight:700;font-size:14px;padding:6px 14px;border-radius:20px;}
.case-metric .case-num{font-family:var(--font-num);font-size:22px;font-weight:800;}
@media(max-width:1024px){
  .cases-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
  .cases{padding:50px 0;}
  .cases-grid{grid-template-columns:1fr;}
}
/* ===== Pricing ===== */
.pricing{padding:90px 0;background:var(--bg);}
.pricing-header{text-align:center;max-width:640px;margin:0 auto 56px;}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch;}
.price-card{background:var(--card);border-radius:var(--radius-lg);padding:36px 32px;border:1px solid var(--border);box-shadow:var(--shadow);display:flex;flex-direction:column;transition:all 0.35s ease;position:relative;}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.price-card.recommend{border:2px solid var(--primary);box-shadow:0 12px 40px rgba(255,77,36,0.12);transform:scale(1.03);}
.price-card.recommend:hover{transform:scale(1.03) translateY(-6px);}
.price-flag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--gradient);color:#fff;font-size:12px;font-weight:700;padding:4px 16px;border-radius:20px;white-space:nowrap;letter-spacing:0.5px;box-shadow:0 4px 12px rgba(255,77,36,0.3);}
.price-name{font-size:20px;font-weight:700;margin-bottom:8px;}
.price-desc{font-size:13px;color:var(--text-muted);margin-bottom:20px;}
.price-amount{font-family:var(--font-num);font-size:46px;font-weight:800;margin-bottom:24px;letter-spacing:-1px;}
.price-amount .symbol{font-size:22px;font-weight:700;color:var(--text-secondary);vertical-align:top;margin-right:2px;}
.price-specs{flex:1;margin-bottom:28px;}
.price-specs li{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:14px;color:var(--text-secondary);border-bottom:1px solid #f5f5f5;}
.price-specs li::before{content:'✓';color:var(--accent);font-weight:700;font-size:13px;}
.price-specs li:last-child{border-bottom:none;}
.price-btn{width:100%;}
@media(max-width:1024px){
  .pricing-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto;gap:24px;}
  .price-card.recommend{transform:none;}
  .price-card.recommend:hover{transform:translateY(-6px);}
}
@media(max-width:768px){
  .pricing{padding:50px 0;}
}
/* ===== News ===== */
.news-section{padding:90px 0;background:#fff;}
.news-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:40px;}
.news-header-left{}
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-item{display:flex;align-items:center;gap:20px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px 24px;transition:all 0.3s ease;}
.news-item:hover{border-color:rgba(255,77,36,0.3);box-shadow:var(--shadow);transform:translateX(4px);}
.news-cat{flex-shrink:0;background:#F3F1ED;color:var(--text);font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-badge);transition:all 0.3s;}
.news-item:hover .news-cat{background:var(--gradient);color:#fff;}
.news-main{flex:1;min-width:0;}
.news-title{font-size:16px;font-weight:600;color:var(--text);display:block;line-height:1.5;margin-bottom:4px;transition:color 0.3s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.news-item:hover .news-title{color:var(--primary);}
.news-summary{font-size:14px;color:var(--text-secondary);display:block;line-height:1.6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.news-meta{flex-shrink:0;text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:4px;}
.news-date{font-size:13px;color:var(--text-muted);font-family:var(--font-num);}
.news-link{font-size:13px;color:var(--primary);font-weight:600;}
.news-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--card);border:1px dashed #e0e0e0;border-radius:var(--radius-lg);padding:60px 20px;text-align:center;color:var(--text-muted);}
.news-empty-icon{font-size:40px;margin-bottom:12px;opacity:0.5;}
@media(max-width:768px){
  .news-section{padding:50px 0;}
  .news-header{flex-direction:column;align-items:flex-start;gap:12px;}
  .news-item{flex-direction:column;align-items:flex-start;gap:8px;padding:16px 20px;}
  .news-meta{flex-direction:row;align-items:center;gap:12px;}
  .news-title,.news-summary{white-space:normal;}
}
/* ===== FAQ ===== */
.faq-section{padding:90px 0;background:var(--bg);}
.faq-header{text-align:center;max-width:640px;margin:0 auto 48px;}
.faq-wrap{max-width:820px;margin:0 auto;background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;}
.faq-item{border-bottom:1px solid #f0f0f0;}
.faq-item:last-child{border-bottom:none;}
.faq-question{display:flex;align-items:center;justify-content:space-between;width:100%;padding:24px 28px;font-size:16px;font-weight:700;color:var(--text);text-align:left;transition:color 0.3s;}
.faq-question:hover{color:var(--primary);}
.faq-question .faq-icon{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--text-secondary);transition:all 0.3s;font-style:normal;}
.faq-item.active .faq-icon{background:var(--gradient);color:#fff;transform:rotate(45deg);}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease;padding:0 28px;}
.faq-item.active .faq-answer{max-height:300px;padding-bottom:24px;}
.faq-answer p{font-size:14px;color:var(--text-secondary);line-height:1.8;}
@media(max-width:768px){
  .faq-section{padding:50px 0;}
  .faq-question{padding:18px 20px;font-size:15px;}
}
/* ===== CTA ===== */
.cta-section{position:relative;padding:90px 0;background:linear-gradient(135deg,#14141F 0%,#20202e 100%);overflow:hidden;}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;opacity:0.15;}
.cta-section::after{content:'';position:absolute;left:50%;top:50%;width:500px;height:500px;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle,rgba(255,77,36,0.06) 0%,transparent 65%);pointer-events:none;}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto;}
.cta-inner h2{font-size:36px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:-0.5px;}
.cta-inner h2 span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.cta-inner p{font-size:16px;color:rgba(255,255,255,0.6);margin-bottom:32px;line-height:1.7;}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
@media(max-width:768px){
  .cta-section{padding:50px 0;}
  .cta-inner h2{font-size:28px;}
}
/* ===== Footer ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,0.6);padding-top:70px;}
.footer-top-line{width:100%;height:1px;background:linear-gradient(90deg,rgba(255,77,36,0.6),rgba(124,58,237,0.6),transparent);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:50px 0 40px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.7;max-width:280px;}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,0.6);transition:color 0.3s;display:inline-flex;align-items:center;gap:6px;}
.footer-col ul a:hover{color:var(--primary);}
.footer-contact{font-size:14px;line-height:1.8;}
.footer-contact a{color:rgba(255,255,255,0.6);}
.footer-contact a:hover{color:var(--primary);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0;background:rgba(0,0,0,0.2);}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,0.4);}
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media(max-width:768px){
  .site-footer{padding-top:50px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-bottom-inner{flex-direction:column;align-items:center;text-align:center;}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:20px;}
  .footer-brand p{max-width:none;}
}
/* ===== Misc ===== */
.section-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,77,36,0.15),rgba(124,58,237,0.15),transparent);border:none;}
@media(max-width:768px){
  .section{padding:50px 0;}
  .section-title{font-size:24px;}
  .section-sub{font-size:14px;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root {
  --primary: #FF4D24;
  --primary-light: #FF6B3D;
  --gradient-end: #7C3AED;
  --gradient: linear-gradient(135deg, #FF4D24 0%, #7C3AED 100%);
  --gradient-soft: linear-gradient(135deg, rgba(255, 77, 36, .12) 0%, rgba(124, 58, 237, .12) 100%);
  --accent: #00C48C;
  --warn: #FFB800;
  --bg: #F7F5F2;
  --bg-deep: #14141F;
  --card: #FFFFFF;
  --text: #1A1A2E;
  --text-sub: #666680;
  --text-muted: #9CA3AF;
  --border: #F0F0F0;
  --radius-card: 24px;
  --radius-btn: 12px;
  --radius-badge: 8px;
  --radius-icon: 50%;
  --shadow: 0 8px 30px rgba(20, 20, 31, .08);
  --shadow-hover: 0 12px 40px rgba(20, 20, 31, .14);
  --container-w: 1200px;
  --space-section: 90px;
  --font-num: "DIN Alternate", "Barlow Condensed", "Arial Narrow", tabular-nums, sans-serif;
}

/* ============ Reset / Base ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
input {
  font-family: inherit;
}
.container {
  width: min(var(--container-w), 92%);
  margin: 0 auto;
}
.section {
  padding: var(--space-section) 0;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  transition: all .3s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 77, 36, .3);
}
.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(124, 58, 237, .35);
}
.btn-primary:active {
  transform: scale(.97);
}
.btn-ghost {
  background: #fff;
  color: var(--text);
  border: 1px solid #DFDFE6;
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-ghost:active {
  transform: scale(.97);
}
.btn-lg {
  min-height: 54px;
  padding: 16px 42px;
  font-size: 17px;
}
.btn:focus-visible {
  outline: 3px solid rgba(255, 77, 36, .4);
  outline-offset: 2px;
}

/* ============ 标签 / 徽章 ============ */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  border-radius: var(--radius-badge);
  background: rgba(255, 77, 36, .1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .5px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  background: rgba(255, 255, 255, .15);
  border: 1px solid rgba(255, 255, 255, .25);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  backdrop-filter: blur(6px);
  margin-bottom: 20px;
}
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  background: #F3F1ED;
  color: #4A4A5A;
  font-size: 13px;
  font-weight: 600;
  transition: all .25s;
}
.tag:hover {
  background: var(--primary);
  color: #fff;
}
.hot-badge {
  position: absolute;
  top: -14px;
  right: 24px;
  padding: 5px 16px;
  border-radius: var(--radius-badge);
  background: linear-gradient(135deg, #FF4D24, #FF2D55);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1px;
  box-shadow: 0 6px 18px rgba(255, 45, 85, .35);
  animation: pulse-badge 2s ease-in-out infinite;
}
@keyframes pulse-badge {
  0%, 100% { box-shadow: 0 6px 18px rgba(255, 45, 85, .35); }
  50% { box-shadow: 0 6px 26px rgba(255, 45, 85, .55); }
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(20, 20, 31, .86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .5px;
  flex-shrink: 0;
  transition: opacity .25s;
}
.logo:hover {
  opacity: .9;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-icon);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 77, 36, .35);
}
.logo-icon svg {
  width: 20px;
  height: 20px;
}
.logo-text {
  color: #fff;
  font-weight: 800;
}
.logo-text span {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.nav-links a {
  position: relative;
  padding: 8px 18px;
  color: rgba(255, 255, 255, .7);
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  transition: color .25s;
}
.nav-links a:hover {
  color: #fff;
}
.nav-links a:hover::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-links a.active {
  color: #fff;
  font-weight: 700;
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(255, 77, 36, .5);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.nav-countdown {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-badge);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .1);
}
.cd-label {
  font-size: 12px;
  color: rgba(255, 255, 255, .6);
  white-space: nowrap;
}
.cd-nums {
  font-family: var(--font-num);
  font-size: 16px;
  font-weight: 700;
  color: var(--warn);
  letter-spacing: 1px;
  font-variant-numeric: tabular-nums;
}
.nav-cta-btn {
  min-height: 42px;
  padding: 10px 24px;
  font-size: 15px;
  background: var(--gradient);
  color: #fff;
  border-radius: var(--radius-btn);
  font-weight: 700;
  transition: all .3s;
  box-shadow: 0 4px 16px rgba(255, 77, 36, .3);
}
.nav-cta-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: var(--radius-btn);
  background: rgba(255, 255, 255, .06);
  transition: all .3s;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 150px 0 0;
  background: var(--bg-deep);
  overflow: hidden;
  color: #fff;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .5;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20, 20, 31, .85) 0%, rgba(20, 20, 31, .6) 60%, rgba(20, 20, 31, .9) 100%);
}
.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  width: 720px;
  height: 720px;
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  width: 480px;
  height: 480px;
  border: 1px solid rgba(255, 255, 255, .04);
  border-radius: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  min-height: 520px;
  padding-bottom: 60px;
}
.hero-copy {
  max-width: 560px;
}
.hero-copy h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 30%, #FFB4A0 70%, #C4A8FF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .75);
  max-width: 480px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.hero-actions .btn-ghost {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .25);
  color: #fff;
}
.hero-actions .btn-ghost:hover {
  background: rgba(255, 255, 255, .18);
  border-color: #fff;
  color: #fff;
}
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-phone {
  width: 100%;
  max-width: 420px;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
  border: 1px solid rgba(255, 255, 255, .15);
  transform: rotate(2deg);
  transition: transform .5s;
}
.hero-phone:hover {
  transform: rotate(0deg) scale(1.02);
}
.hero-phone img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.hero-stats-bar {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: #fff;
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: translateY(50%);
  margin: 0 auto;
  max-width: var(--container-w);
  width: 92%;
  border: 1px solid rgba(0, 0, 0, .04);
}
.stat-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 28px 16px;
  background: #fff;
  transition: background .3s;
  border-right: 1px solid #f2f2f2;
}
.stat-item:last-child {
  border-right: none;
}
.stat-item:hover {
  background: var(--gradient-soft);
}
.stat-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat-unit {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  max-width: 70px;
  line-height: 1.4;
}

/* ============ 板块共用头部 ============ */
.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -.5px;
  line-height: 1.3;
  margin: 14px 0 12px;
}
.section-head p {
  color: var(--text-sub);
  font-size: 16px;
  line-height: 1.75;
}

/* ============ 功能卖点 ============ */
.features {
  padding-top: calc(var(--space-section) + 40px);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all .35s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity .35s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 77, 36, .3);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: #fff;
  font-size: 26px;
  box-shadow: 0 6px 18px rgba(255, 77, 36, .25);
}
.feature-card:nth-child(2) .feature-icon,
.feature-card:nth-child(5) .feature-icon {
  background: linear-gradient(135deg, #FF4D24, #FFB800);
}
.feature-card:nth-child(3) .feature-icon,
.feature-card:nth-child(6) .feature-icon {
  background: linear-gradient(135deg, #7C3AED, #00C48C);
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -.3px;
}
.feature-card p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 18px;
}
.feature-more {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s;
}
.feature-more:hover {
  gap: 10px;
}

/* ============ 场景 ============ */
.scenes {
  background: var(--bg);
  position: relative;
}
.scene-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 60px;
}
.scene-row:last-child {
  margin-bottom: 0;
}
.scene-img {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 3;
  position: relative;
}
.scene-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.scene-img:hover img {
  transform: scale(1.04);
}
.scene-copy h3 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: 14px;
}
.scene-copy p {
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
  font-size: 16px;
}
.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ============ 价格 ============ */
.pricing {
  background: var(--bg);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.price-card {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 40px 32px 36px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
  transition: all .35s;
  display: flex;
  flex-direction: column;
}
.price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.price-card.featured {
  border: 2px solid var(--primary);
  transform: scale(1.05);
  box-shadow: 0 16px 50px rgba(255, 77, 36, .18);
}
.price-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}
.price-name {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 4px;
}
.price-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.price-amount {
  font-family: var(--font-num);
  font-size: 56px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}
.price-amount small {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-sub);
  margin-right: 2px;
}
.price-desc {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  padding: 20px 0;
  border-top: 1px dashed #eee;
  border-bottom: 1px dashed #eee;
  margin: 24px 0;
  text-align: left;
  flex: 1;
}
.price-desc li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
}
.price-desc li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 800;
  flex-shrink: 0;
}
.price-btn {
  width: 100%;
}
.price-btn .btn {
  width: 100%;
}

/* ============ 推荐阅读 ============ */
.reads {
  background: #fff;
}
.read-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.read-card {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 16px;
  transition: all .35s;
  border: 1px solid var(--border);
}
.read-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 77, 36, .2);
}
.read-cover {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  margin-bottom: 18px;
  position: relative;
}
.read-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.read-card:hover .read-cover img {
  transform: scale(1.05);
}
.read-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.read-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(255, 77, 36, .1);
  padding: 4px 12px;
  border-radius: var(--radius-badge);
}
.read-date {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-num);
}
.read-card h3 {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 10px;
  letter-spacing: -.3px;
}
.read-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 16px;
}
.read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  transition: gap .25s;
}
.read-link:hover {
  gap: 10px;
}

/* ============ FAQ ============ */
.faq-section {
  background: var(--bg);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 16px 40px 8px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.faq-item {
  border-bottom: 1px solid #f0f0f0;
  padding: 4px 0;
  transition: background .3s;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  user-select: none;
  line-height: 1.5;
}
.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--gradient-soft);
  transition: all .35s;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
}
.faq-icon::before {
  width: 14px;
  height: 2px;
  top: 13px;
  left: 7px;
}
.faq-icon::after {
  width: 2px;
  height: 14px;
  top: 7px;
  left: 13px;
  transition: transform .3s;
}
.faq-item.open .faq-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s ease;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.open .faq-a {
  max-height: 320px;
  padding-bottom: 20px;
}
.faq-a-inner {
  padding-right: 40px;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  background: var(--bg-deep);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 120%, rgba(255, 77, 36, .2) 0%, transparent 60%),
    radial-gradient(circle at 50% -40%, rgba(124, 58, 237, .15) 0%, transparent 60%);
}
.cta-section::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 120%;
  height: 500px;
  border: 1px solid rgba(255, 255, 255, .05);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 100px 0;
}
.cta-inner h2 {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.cta-inner p {
  color: rgba(255, 255, 255, .7);
  font-size: 17px;
  margin-bottom: 36px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, .7);
}
.footer-top-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--gradient-end), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding: 64px 0 48px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .55);
  max-width: 320px;
  margin-top: 16px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  color: rgba(255, 255, 255, .55);
  font-size: 14px;
  transition: all .25s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul a:hover {
  color: #fff;
  transform: translateX(3px);
}
.footer-contact p {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .55);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
}
.footer-bottom-inner p:last-child {
  font-family: var(--font-num);
}

/* ============ 响应式 ============ */
@media (max-width: 1280px) {
  .hero-inner {
    gap: 40px;
  }
  .hero-copy h1 {
    font-size: 48px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    gap: 20px;
  }
  .price-card {
    padding: 32px 24px 28px;
  }
  .price-amount {
    font-size: 48px;
  }
}

@media (max-width: 1024px) {
  :root {
    --space-section: 70px;
  }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(20, 20, 31, .98);
    backdrop-filter: blur(12px);
    padding: 20px 6%;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform .35s ease;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    margin: 0;
    z-index: 99;
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .nav-links a {
    display: block;
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
  }
  .nav-links a.active {
    background: rgba(255, 77, 36, .15);
  }
  .nav-links a::after,
  .nav-links a.active::after {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-countdown {
    display: none;
  }
  .hero {
    padding-top: 120px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 30px;
    padding-bottom: 40px;
  }
  .hero-copy {
    max-width: 100%;
    margin: 0 auto;
  }
  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-visual {
    max-width: 320px;
    margin: 0 auto;
  }
  .hero-stats-bar {
    grid-template-columns: repeat(2, 1fr);
    transform: translateY(30%);
  }
  .stat-item {
    border-bottom: 1px solid #f2f2f2;
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
  .features {
    padding-top: calc(var(--space-section) + 50px);
  }
  .feature-card {
    padding: 28px;
  }
  .scene-row {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .scene-row:nth-child(even) .scene-img {
    order: 0;
  }
  .scene-row:nth-child(even) .scene-copy {
    order: 0;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 0 auto;
    gap: 32px;
  }
  .price-card.featured {
    transform: scale(1);
  }
  .price-card.featured:hover {
    transform: translateY(-4px);
  }
  .read-grid {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .cta-inner h2 {
    font-size: 34px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 50px;
  }
  .hero-copy h1 {
    font-size: 36px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .features-grid {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 0 auto;
  }
  .scene-copy h3 {
    font-size: 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-brand p {
    max-width: 100%;
  }
  .faq-wrap {
    padding: 8px 24px 0;
  }
  .cta-inner {
    padding: 70px 0;
  }
  .cta-inner h2 {
    font-size: 30px;
  }
  .nav-cta-btn {
    padding: 10px 18px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding-top: 110px;
  }
  .hero-copy h1 {
    font-size: 32px;
  }
  .hero-visual {
    max-width: 260px;
  }
  .hero-stats-bar {
    grid-template-columns: 1fr;
  }
  .stat-item {
    justify-content: flex-start;
    padding: 18px 24px;
    border-right: none;
  }
  .stat-item:nth-child(2) {
    border-bottom: 1px solid #f2f2f2;
  }
  .stat-item:nth-child(3) {
    border-bottom: 1px solid #f2f2f2;
  }
  .stat-num {
    font-size: 36px;
  }
  .section-head p {
    font-size: 15px;
  }
  .btn-lg {
    width: 100%;
    padding: 14px 20px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .feature-card {
    padding: 24px;
  }
  .feature-card h3 {
    font-size: 18px;
  }
  .price-amount {
    font-size: 42px;
  }
  .read-card h3 {
    font-size: 17px;
  }
  .faq-q {
    font-size: 16px;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
    --primary: #FF4D24;
    --primary-dark: #E63E1A;
    --gradient: linear-gradient(135deg, #FF4D24 0%, #7C3AED 100%);
    --accent: #00C48C;
    --warning: #FFB800;
    --bg: #F7F5F2;
    --card-bg: #FFFFFF;
    --dark: #14141F;
    --text: #1A1A2E;
    --text-sub: #666680;
    --text-weak: #9CA3AF;
    --border: #F0F0F0;
    --radius-card: 24px;
    --radius-btn: 12px;
    --radius-badge: 8px;
    --shadow: 0 8px 30px rgba(20, 20, 31, 0.08);
    --shadow-hover: 0 12px 40px rgba(20, 20, 31, 0.14);
    --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-num: "DIN Alternate", "Barlow Condensed", "Helvetica Neue", sans-serif;
    --header-height: 72px;
    --container: 1200px;
    --transition: 0.3s ease;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4 { line-height: 1.25; font-weight: 800; letter-spacing: -0.5px; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* BTN */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 16px;
    min-height: 48px;
    transition: all var(--transition);
    border: none;
    letter-spacing: 0.2px;
}
.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 77, 36, 0.3);
}
.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 77, 36, 0.4);
}
.btn-primary:active { transform: scale(0.97); }
.btn-outline {
    background: var(--bg);
    border: 1px solid #DCDCDC;
    color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 18px 42px; font-size: 18px; min-height: 56px; }

/* HEADER */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(20, 20, 31, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 1000;
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    flex-shrink: 0;
}
.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 12px rgba(255, 77, 36, 0.35);
}
.logo-icon svg { width: 20px; height: 20px; }
.logo-text {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #fff;
    line-height: 1;
}
.logo-text span { color: var(--primary); }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 6px 0;
    transition: color var(--transition);
}
.nav-links a:hover { color: #fff; }
.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: #fff; font-weight: 700; }
.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-countdown { display: flex; align-items: center; gap: 8px; font-size: 12px; }
.cd-label { color: rgba(255, 255, 255, 0.5); }
.cd-nums {
    font-family: var(--font-num);
    font-size: 16px;
    color: var(--warning);
    font-weight: 700;
    letter-spacing: 1px;
    font-variant-numeric: tabular-nums;
}
.nav-cta-btn {
    background: var(--gradient);
    color: #fff;
    padding: 10px 22px;
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(255, 77, 36, 0.3);
    transition: all var(--transition);
    min-height: 0;
}
.nav-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 77, 36, 0.4);
    filter: brightness(1.1);
    color: #fff;
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

main { padding-top: var(--header-height); }

/* ARTICLE HERO */
.article-hero {
    background: linear-gradient(135deg, #FEF0EC 0%, #F6F0FF 50%, #EBF8F5 100%);
    padding: 64px 0 56px;
    position: relative;
    overflow: hidden;
}
.article-hero::before {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 77, 36, 0.08) 0%, transparent 70%);
    top: -120px;
    right: -60px;
    pointer-events: none;
}
.article-hero::after {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.06) 0%, transparent 70%);
    bottom: -80px;
    left: 10%;
    pointer-events: none;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 24px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}
.breadcrumb a { color: var(--text-sub); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.bc-sep { color: var(--text-weak); }
.bc-current {
    color: var(--text);
    font-weight: 600;
    max-width: 60%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.article-hero h1 {
    font-size: 42px;
    line-height: 1.2;
    margin-bottom: 20px;
    max-width: 800px;
    position: relative;
    z-index: 1;
    letter-spacing: -1px;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    color: var(--text-sub);
    font-size: 14px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}
.meta-item { display: flex; align-items: center; gap: 6px; }
.meta-item::before {
    content: "";
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.4;
}

/* ARTICLE BODY */
.article-body { padding: 56px 0 80px; }
.cms-content {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    padding: 52px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    max-width: 880px;
    margin: 0 auto;
}
.cms-content h2 { font-size: 28px; margin: 36px 0 16px; padding-bottom: 12px; border-bottom: 1px solid #F0ECEC; }
.cms-content h3 { font-size: 22px; margin: 28px 0 12px; }
.cms-content h2:first-child, .cms-content h3:first-child { margin-top: 0; }
.cms-content p { margin-bottom: 16px; color: var(--text); font-size: 16px; line-height: 1.85; }
.cms-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.cms-content a:hover { color: var(--primary-dark); }
.cms-content img {
    margin: 28px 0;
    border-radius: 16px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    width: 100%;
    background: #F0F0F0;
}
.cms-content figcaption {
    font-size: 13px;
    color: var(--text-sub);
    text-align: center;
    margin-top: -16px;
    margin-bottom: 28px;
    padding: 0 16px;
}
.cms-content blockquote {
    border-left: 4px solid var(--primary);
    background: #FFF8F6;
    padding: 18px 24px;
    border-radius: 0 14px 14px 0;
    margin: 28px 0;
    color: var(--text-sub);
    font-size: 15px;
    line-height: 1.8;
}
.cms-content pre {
    background: var(--dark);
    color: #E8E8F0;
    padding: 24px;
    border-radius: 16px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.7;
    margin: 28px 0;
    font-family: "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
}
.cms-content p code {
    background: #F3F1ED;
    color: var(--primary-dark);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
    font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
}
.cms-content pre code { background: none; color: inherit; padding: 0; font-size: 14px; }
.cms-content table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 15px; }
.cms-content th,
.cms-content td { border: 1px solid #ECECEC; padding: 12px 16px; text-align: left; }
.cms-content th { background: #F8F7F5; font-weight: 700; }
.cms-content tr:hover td { background: #FCFAF8; }
.cms-content ul,
.cms-content ol { margin: 16px 0 16px 24px; }
.cms-content ul li { list-style: disc; margin-bottom: 6px; }
.cms-content ol li { list-style: decimal; margin-bottom: 6px; }
.cms-content hr { border: none; height: 1px; background: linear-gradient(90deg, rgba(255, 77, 36, 0.3), rgba(124, 58, 237, 0.3), transparent); margin: 32px 0; }
.content-not-found {
    text-align: center;
    padding: 80px 20px;
}
.content-not-found .not-found-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}
.content-not-found p {
    font-size: 20px;
    color: var(--text-sub);
    margin-bottom: 28px;
}

/* TAG */
.tag {
    display: inline-block;
    padding: 4px 12px;
    background: #F3F1ED;
    color: var(--text);
    border-radius: var(--radius-badge);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.6;
    transition: all var(--transition);
}
.tag-primary {
    background: rgba(255, 77, 36, 0.1);
    color: var(--primary-dark);
}
.tag-primary:hover { background: var(--primary); color: #fff; }

/* RELATED */
.related-section { padding: 80px 0; background: var(--bg); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 32px; letter-spacing: -0.5px; }
.section-header p { color: var(--text-sub); margin-top: 8px; font-size: 15px; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: var(--container);
    margin: 0 auto;
}
.related-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(255, 77, 36, 0.35);
}
.related-card-cover {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #F0F0F0;
    position: relative;
}
.related-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .related-card-cover img { transform: scale(1.04); }
.related-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.related-card-body .tag { align-self: flex-start; margin-bottom: 12px; }
.related-card-body h3 {
    font-size: 18px;
    line-height: 1.4;
    margin-bottom: 8px;
    font-weight: 700;
}
.related-card-body h3 a { color: var(--text); transition: color var(--transition); }
.related-card-body h3 a:hover { color: var(--primary); }
.related-card-body p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
    flex: 1;
}
.related-card-link {
    margin-top: 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
}
.related-card-link:hover { gap: 8px; }
.related-more { text-align: center; margin-top: 48px; }

/* CTA */
.article-cta {
    padding: 88px 0;
    background: var(--dark);
    position: relative;
    overflow: hidden;
    text-align: center;
}
.article-cta::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 700px;
    background: repeating-radial-gradient(
        circle at center,
        rgba(255, 255, 255, 0.03) 0px,
        rgba(255, 255, 255, 0.03) 2px,
        transparent 2px,
        transparent 32px
    );
    pointer-events: none;
    border-radius: 50%;
}
.article-cta .container { position: relative; z-index: 1; }
.article-cta h2 {
    color: #fff;
    font-size: 34px;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}
.article-cta p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 16px;
    margin: 0 auto 36px;
    max-width: 520px;
    line-height: 1.7;
}
.article-cta .btn { margin: 0 auto; }

/* FOOTER */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.7); }
.footer-top-line { height: 1px; background: linear-gradient(90deg, rgba(255, 77, 36, 0.5), rgba(124, 58, 237, 0.5), transparent); }
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
    gap: 48px;
    padding: 64px 0 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
    max-width: 280px;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
    font-weight: 700;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    transition: color var(--transition);
}
.footer-col ul a:hover { color: #fff; }
.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 8px;
}
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0; }
.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
    .nav-links { gap: 20px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .cms-content { padding: 40px; }
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(20, 20, 31, 0.97);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }
    .nav-countdown { display: none; }
    .article-hero { padding: 44px 0 40px; }
    .article-hero h1 { font-size: 32px; }
    .article-body { padding: 40px 0 60px; }
    .cms-content { padding: 28px 20px; border-radius: 20px; }
    .related-section { padding: 60px 0; }
    .related-grid { grid-template-columns: 1fr; gap: 20px; }
    .article-cta { padding: 64px 0; }
    .article-cta h2 { font-size: 28px; }
    .footer-grid { grid-template-columns: 1fr; gap: 36px; }
    .footer-bottom-inner { flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 520px) {
    .container { padding: 0 18px; }
    .nav-cta-btn { padding: 8px 16px; font-size: 13px; }
    .breadcrumb { font-size: 13px; gap: 8px; }
    .bc-current { max-width: 100%; }
    .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
    .cms-content table { font-size: 13px; }
    .cms-content th,
    .cms-content td { padding: 8px 10px; }
    .cms-content pre { padding: 16px; font-size: 13px; }
    .related-card-body { padding: 20px; }
    .section-header h2 { font-size: 26px; }
}

/* roulang page: category2 */
:root {
  --primary: #FF4D24;
  --primary-dark: #E63A12;
  --gradient-end: #7C3AED;
  --gradient: linear-gradient(135deg, #FF4D24 0%, #7C3AED 100%);
  --gradient-soft: linear-gradient(135deg, rgba(255,77,36,.12) 0%, rgba(124,58,237,.12) 100%);
  --accent-green: #00C48C;
  --accent-yellow: #FFB800;
  --bg-warm: #F7F5F2;
  --bg-card: #FFFFFF;
  --bg-dark: #14141F;
  --text-main: #1A1A2E;
  --text-sub: #666680;
  --text-weak: #9CA3AF;
  --border-light: #F0F0F0;
  --border-line: #E8E6E3;
  --radius-card: 24px;
  --radius-btn: 12px;
  --radius-badge: 8px;
  --radius-icon: 16px;
  --shadow-card: 0 8px 30px rgba(20, 20, 31, 0.08);
  --shadow-card-hover: 0 12px 40px rgba(20, 20, 31, 0.14);
  --shadow-btn: 0 6px 20px rgba(255, 77, 36, 0.3);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", "Arial Narrow", "Roboto Condensed", tabular-nums, sans-serif;
  --max-width: 1200px;
  --space: 88px;
  --nav-h: 72px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-main); color: var(--text-main); background: var(--bg-warm); line-height: 1.75; font-size: 16px; overflow-x: hidden; }
img { max-width: 100%; display: block; border: 0; }
a { text-decoration: none; color: inherit; transition: color .25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, select, textarea { font-family: inherit; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space) 0; position: relative; }
.section-tight { padding: 56px 0; }
.h2 { font-size: 32px; line-height: 1.3; font-weight: 800; letter-spacing: -0.8px; margin-bottom: 12px; }
.h3 { font-size: 20px; line-height: 1.45; font-weight: 700; letter-spacing: -0.4px; }
.section-sub { font-size: 16px; color: var(--text-sub); max-width: 600px; line-height: 1.7; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .h2 { position: relative; display: inline-block; }
.section-head .h2::after { content: ""; position: absolute; left: 50%; bottom: -10px; transform: translateX(-50%); width: 48px; height: 4px; border-radius: 4px; background: var(--gradient); }
.section-head .section-sub { margin: 16px auto 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 700; font-size: 15px; line-height: 1; padding: 14px 28px; border-radius: var(--radius-btn); min-height: 48px; cursor: pointer; transition: all .3s var(--ease); white-space: nowrap; }
.btn-primary { background: var(--gradient); color: #fff; box-shadow: var(--shadow-btn); border: none; }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(255, 77, 36, 0.38); }
.btn-primary:active { transform: scale(0.97); }
.btn-secondary { background: #fff; color: var(--text-main); border: 1px solid #ddd; }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.06); }
.btn-secondary:active { transform: scale(0.97); }
.btn-lg { padding: 16px 36px; font-size: 16px; min-height: 52px; }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 4px 12px; border-radius: var(--radius-badge); font-size: 12px; font-weight: 600; background: #F3F1ED; color: var(--text-main); line-height: 1.6; white-space: nowrap; }
.badge-hot { background: linear-gradient(135deg, #FF3E1A, #FF7A1A); color: #fff; }
.badge-new { background: var(--gradient); color: #fff; }
.badge-green { background: rgba(0, 196, 140, .14); color: #008f66; }
.tag { display: inline-flex; align-items: center; padding: 5px 14px; border-radius: 8px; background: #F3F1ED; color: var(--text-main); font-size: 12px; font-weight: 600; transition: all .25s ease; }
.tag:hover { background: var(--primary); color: #fff; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; font-weight: 700; letter-spacing: -0.02em; }

/* ===== Header Nav ===== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--nav-h); background: rgba(20, 20, 31, .86); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,.06); transition: box-shadow .3s ease; }
.site-header.scrolled { box-shadow: 0 8px 30px rgba(0,0,0,.3); }
.nav-inner { display: flex; align-items: center; height: var(--nav-h); }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 36px; height: 36px; border-radius: 10px; background: var(--gradient); color: #fff; display: inline-flex; align-items: center; justify-content: center; box-shadow: 0 4px 14px rgba(255, 77, 36, .35); }
.logo-icon svg { width: 18px; height: 18px; }
.logo-text { font-size: 18px; font-weight: 800; color: #fff; letter-spacing: -0.5px; line-height: 1; }
.logo-text span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 4px; margin: 0 auto; padding: 0 20px; }
.nav-links a { position: relative; color: rgba(255,255,255,.68); font-size: 15px; font-weight: 500; padding: 10px 16px; border-radius: 8px; transition: color .25s ease; line-height: 1.3; }
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }
.nav-links a::after { content: ""; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%); width: 0; height: 2px; border-radius: 2px; background: var(--primary); transition: width .3s var(--ease); }
.nav-links a.active { color: #fff; font-weight: 700; }
.nav-links a.active::after { width: 60%; }
.nav-right { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-countdown { display: flex; align-items: center; gap: 6px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); border-radius: 10px; padding: 5px 12px; font-size: 12px; color: rgba(255,255,255,.72); }
.cd-label { letter-spacing: 0.02em; }
.cd-nums { font-family: var(--font-num); color: var(--accent-yellow); font-size: 15px; font-weight: 700; letter-spacing: 1px; }
.nav-cta-btn { min-height: 40px; padding: 10px 22px; font-size: 14px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 10px; border-radius: 8px; background: rgba(255,255,255,.06); }
.nav-toggle span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: all .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; padding: calc(var(--nav-h) + 40px) 0 100px; background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat; background-blend-mode: overlay; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(20,20,31,.94) 0%, rgba(20,20,31,.82) 40%, rgba(20,20,31,.45) 100%); }
.hero::after { content: ""; position: absolute; right: -10%; bottom: -20%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(124,58,237,.2) 0%, transparent 60%); border-radius: 50%; pointer-events: none; }
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; border-radius: 30px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.9); font-size: 13px; margin-bottom: 24px; }
.hero-badge i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-green); }
.hero h1 { font-size: 52px; line-height: 1.2; color: #fff; font-weight: 800; letter-spacing: -1px; margin-bottom: 20px; }
.hero-sub { font-size: 18px; line-height: 1.8; color: rgba(255,255,255,.82); max-width: 480px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-img-wrap { border-radius: 32px; overflow: hidden; box-shadow: 0 30px 60px rgba(0,0,0,.5); border: 1px solid rgba(255,255,255,.1); aspect-ratio: 4/3; background: #22232e; }
.hero-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.hero-float-card { position: absolute; bottom: -20px; left: -30px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-radius: 18px; padding: 14px 18px; display: flex; align-items: center; gap: 12px; color: #fff; box-shadow: 0 16px 40px rgba(0,0,0,.3); }
.hero-float-card .num { font-size: 28px; color: var(--accent-yellow); line-height: 1; }
.hero-float-card p { font-size: 12px; color: rgba(255,255,255,.7); line-height: 1.4; }
.hero-stats { position: absolute; bottom: -48px; left: 50%; transform: translateX(-50%); z-index: 5; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; background: #fff; border-radius: 18px; box-shadow: var(--shadow-card); overflow: hidden; width: min(880px, calc(100% - 48px)); }
.hero-stat { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 20px 28px; border-right: 1px solid var(--border-light); }
.hero-stat:last-child { border-right: none; }
.hero-stat .num { font-size: 34px; line-height: 1; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-stat .label { font-size: 13px; color: var(--text-sub); line-height: 1.3; }
.hero-stat .label strong { display: block; color: var(--text-main); font-size: 13px; }

/* ===== Section Framing ===== */
.section-white { background: #fff; }
.section-warm { background: var(--bg-warm); }
.section-dark { background: var(--bg-dark); color: #fff; }

/* ===== Feature Cards ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border-radius: var(--radius-card); border: 1px solid var(--border-light); padding: 32px 28px; box-shadow: var(--shadow-card); transition: all .35s var(--ease); }
.feature-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-6px); border-color: rgba(255, 77, 36, .35); }
.feature-icon { width: 64px; height: 64px; border-radius: 20px; background: var(--gradient); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: #fff; box-shadow: 0 8px 20px rgba(255, 77, 36, .28); }
.feature-icon.green { background: linear-gradient(135deg, #00C48C, #00A0E9); box-shadow: 0 8px 20px rgba(0, 196, 140, .28); }
.feature-icon.yellow { background: linear-gradient(135deg, #FFB800, #FF6A00); box-shadow: 0 8px 20px rgba(255, 184, 0, .26); }
.feature-icon.purple { background: linear-gradient(135deg, #7C3AED, #D946EF); box-shadow: 0 8px 20px rgba(124, 58, 237, .26); }
.feature-icon svg { width: 28px; height: 28px; }
.feature-card h3 { font-size: 20px; font-weight: 700; letter-spacing: -0.4px; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
.feature-more { display: inline-block; margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--primary); transition: gap .3s; }
.feature-more:hover { gap: 4px; }

/* ===== Scene Blocks ===== */
.scene-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 88px; }
.scene-block:last-child { margin-bottom: 0; }
.scene-block.reverse .scene-image { order: 2; }
.scene-block.reverse .scene-content { order: 1; }
.scene-image { border-radius: 28px; overflow: hidden; box-shadow: var(--shadow-card); aspect-ratio: 4/3; background: #e8e6e3; position: relative; }
.scene-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.scene-image:hover img { transform: scale(1.04); }
.scene-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(20,20,31,.3)); }
.scene-content .badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.scene-content h3 { font-size: 26px; font-weight: 700; letter-spacing: -0.6px; margin-bottom: 12px; }
.scene-content p { color: var(--text-sub); line-height: 1.8; font-size: 15px; }
.scene-content p + p { margin-top: 12px; }

/* ===== Product Price ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; align-items: stretch; }
.pricing-card { position: relative; background: #fff; border-radius: var(--radius-card); border: 1px solid var(--border-light); padding: 40px 32px 32px; box-shadow: var(--shadow-card); transition: all .35s var(--ease); display: flex; flex-direction: column; }
.pricing-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card-hover); }
.pricing-card.recommended { border: 2px solid var(--primary); transform: scale(1.05); box-shadow: 0 16px 44px rgba(255, 77, 36, .15); }
.pricing-card.recommended:hover { transform: scale(1.05) translateY(-6px); }
.pricing-flag { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--gradient); color: #fff; font-size: 12px; font-weight: 700; padding: 5px 16px; border-radius: 20px; box-shadow: 0 4px 12px rgba(255, 77, 36, .35); letter-spacing: .02em; }
.pricing-name { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.pricing-tagline { font-size: 13px; color: var(--text-sub); margin-bottom: 20px; }
.pricing-price { display: flex; align-items: baseline; gap: 2px; margin-bottom: 20px; }
.pricing-price .symbol { font-size: 18px; font-weight: 600; color: var(--text-main); }
.pricing-price .amount { font-size: 52px; font-weight: 800; letter-spacing: -2px; line-height: 1; font-family: var(--font-num); background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.pricing-price .unit { font-size: 13px; color: var(--text-weak); }
.pricing-features { list-style: none; margin-bottom: 24px; flex: 1; }
.pricing-features li { display: flex; align-items: flex-start; gap: 8px; font-size: 14px; color: var(--text-sub); padding: 5px 0; line-height: 1.5; }
.pricing-features li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--gradient); flex-shrink: 0; margin-top: 8px; }
.pricing-card .btn { width: 100%; }

/* ===== Article Cards ===== */
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.article-card { background: #fff; border-radius: var(--radius-card); border: 1px solid var(--border-light); box-shadow: var(--shadow-card); overflow: hidden; transition: all .35s var(--ease); display: block; }
.article-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-6px); }
.article-card .cover { aspect-ratio: 16/9; background: #F0F0F0; overflow: hidden; position: relative; }
.article-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.article-card:hover .cover img { transform: scale(1.06); }
.article-card .body { padding: 24px; }
.article-card .meta { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-weak); margin-bottom: 10px; }
.article-card h3 { font-size: 18px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; letter-spacing: -0.3px; }
.article-card p { font-size: 13px; color: var(--text-sub); line-height: 1.7; margin-bottom: 16px; }
.article-card .read-more { font-size: 13px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; }
.article-card .read-more::after { content: "→"; transition: transform .3s; }
.article-card:hover .read-more::after { transform: translateX(4px); }

/* ===== FAQ ===== */
.faq-wrap { background: #fff; border-radius: var(--radius-card); border: 1px solid var(--border-light); box-shadow: var(--shadow-card); padding: 8px 32px; max-width: 880px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border-light); }
.faq-item:last-child { border-bottom: none; }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; cursor: pointer; font-size: 16px; font-weight: 700; color: var(--text-main); line-height: 1.5; user-select: none; }
.faq-q .faq-icon { position: relative; width: 24px; height: 24px; flex-shrink: 0; border-radius: 50%; background: var(--gradient-soft); display: flex; align-items: center; justify-content: center; transition: all .3s ease; }
.faq-q .faq-icon::before { content: "+"; font-size: 16px; color: var(--primary); font-weight: 700; line-height: 1; transition: transform .3s ease; }
.faq-item.open .faq-icon { background: var(--gradient); }
.faq-item.open .faq-icon::before { color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; padding: 0 32px 0 0; }
.faq-a p { font-size: 14px; color: var(--text-sub); line-height: 1.8; padding-bottom: 20px; }

/* ===== CTA Section ===== */
.cta-section { position: relative; padding: 96px 0; background: var(--bg-dark) url('/assets/images/backpic/back-3.webp') center/cover no-repeat; overflow: hidden; text-align: center; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(20,20,31,.94) 0%, rgba(124,58,237,.65) 100%); }
.cta-section::after { content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 700px; height: 700px; background: radial-gradient(circle, rgba(255, 77, 36, .18) 0%, rgba(255, 184, 0, .08) 40%, transparent 70%); border-radius: 50%; pointer-events: none; }
.cta-inner { position: relative; z-index: 2; max-width: 620px; margin: 0 auto; }
.cta-inner h2 { font-size: 38px; color: #fff; font-weight: 800; letter-spacing: -1px; margin-bottom: 16px; line-height: 1.3; }
.cta-inner p { color: rgba(255,255,255,.78); font-size: 16px; margin-bottom: 32px; line-height: 1.8; }
.cta-inner .btn { margin: 0 8px 8px; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,.7); position: relative; }
.footer-top-line { height: 1px; background: linear-gradient(90deg, #FF4D24, #7C3AED, transparent); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 64px 0 40px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,.55); max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; letter-spacing: .02em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 13px; color: rgba(255,255,255,.55); transition: color .25s, padding-left .25s; }
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact p { font-size: 13px; color: rgba(255,255,255,.55); margin-bottom: 8px; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,.35); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero h1 { font-size: 42px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.recommended { transform: scale(1); }
  .pricing-card.recommended:hover { transform: translateY(-6px); }
  .scene-block { grid-template-columns: 1fr; gap: 24px; }
  .scene-block.reverse .scene-image { order: 0; }
  .scene-block.reverse .scene-content { order: 1; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --space: 56px; }
  .nav-links { position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; background: rgba(20,20,31,.98); backdrop-filter: blur(16px); padding: 16px 24px; gap: 8px; margin: 0; align-items: flex-start; border-bottom: 1px solid rgba(255,255,255,.08); transform: translateY(-110%); transition: transform .35s ease; z-index: 999; }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; padding: 12px 8px; font-size: 16px; }
  .nav-links a::after { display: none; }
  .nav-countdown { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta-btn { padding: 8px 14px; font-size: 13px; min-height: 36px; }
  .hero { padding-top: calc(var(--nav-h) + 24px); padding-bottom: 70px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-stats { position: static; transform: none; margin-top: 40px; width: 100%; grid-template-columns: repeat(2, 1fr); border-radius: 16px; }
  .hero-stat { padding: 14px 12px; border-bottom: 1px solid var(--border-light); }
  .hero-stat:nth-child(2) { border-right: none; }
  .hero-stat .num { font-size: 28px; }
  .feature-grid { grid-template-columns: 1fr; }
  .section-head .h2 { font-size: 26px; }
  .scene-block { margin-bottom: 56px; }
  .scene-content h3 { font-size: 22px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.recommended { order: -1; }
  .article-grid { grid-template-columns: 1fr; }
  .faq-wrap { padding: 4px 16px; }
  .cta-inner h2 { font-size: 30px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 32px; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  :root { --space: 48px; }
  .container { padding: 0 16px; }
  .hero h1 { font-size: 30px; letter-spacing: -0.5px; }
  .hero-sub { font-size: 15px; }
  .btn { padding: 12px 20px; font-size: 14px; min-height: 44px; }
  .btn-lg { padding: 14px 24px; font-size: 15px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stat { gap: 6px; padding: 12px 8px; }
  .hero-stat .num { font-size: 24px; }
  .hero-stat .label { font-size: 11px; }
  .feature-card { padding: 24px 20px; }
  .feature-icon { width: 52px; height: 52px; border-radius: 16px; }
  .feature-icon svg { width: 22px; height: 22px; }
  .pricing-card { padding: 28px 20px 24px; }
  .pricing-price .amount { font-size: 42px; }
  .faq-q { font-size: 14px; }
  .cta-section { padding: 64px 0; }
  .cta-inner h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* roulang page: category3 */
:root {
  --primary: #FF4D24;
  --primary-dark: #E63A12;
  --grad-end: #7C3AED;
  --accent: #00C48C;
  --warn: #FFB800;
  --bg: #F7F5F2;
  --card: #FFFFFF;
  --dark: #14141F;
  --text: #1A1A2E;
  --text-sub: #666680;
  --text-weak: #9CA3AF;
  --border: #F0F0F0;
  --radius-lg: 24px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 30px rgba(20, 20, 31, 0.08);
  --shadow-hover: 0 12px 40px rgba(20, 20, 31, 0.14);
  --main-gradient: linear-gradient(135deg, #FF4D24 0%, #7C3AED 100%);
  --soft-gradient: linear-gradient(120deg, rgba(255, 77, 36, 0.08) 0%, rgba(124, 58, 237, 0.08) 100%);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", tabular-nums, sans-serif;
  --container: 1200px;
  --header-h: 72px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
:focus-visible { outline: 3px solid rgba(255, 77, 36, 0.3); outline-offset: 2px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  height: var(--header-h);
  background: rgba(20, 20, 31, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 12px;
  background: var(--main-gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff; flex-shrink: 0;
}
.logo-icon svg { width: 20px; height: 20px; }
.logo-text { color: #fff; font-size: 20px; font-weight: 800; letter-spacing: -0.5px; }
.logo-text span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
  position: relative;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.nav-links a.active { color: #fff; font-weight: 700; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 2px; left: 14px; right: 14px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-right { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-countdown { display: flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.08); border-radius: 20px; padding: 6px 14px; }
.cd-label { color: rgba(255, 255, 255, 0.6); font-size: 12px; }
.cd-nums { color: var(--warn); font-family: var(--font-num); font-size: 15px; font-weight: 700; letter-spacing: 1px; }
.btn { display: inline-flex; align-items: center; justify-content: center; font-weight: 700; border-radius: var(--radius-md); transition: all 0.2s ease; min-height: 48px; padding: 0 28px; font-size: 15px; }
.nav-cta-btn { min-height: 38px; padding: 0 20px; font-size: 14px; background: var(--main-gradient); color: #fff; }
.nav-cta-btn:hover { filter: brightness(1.1); transform: translateY(-2px); }
.nav-cta-btn:active { transform: scale(0.97); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: 9px; background: rgba(255,255,255,0.08); }
.nav-toggle span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s; }
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: var(--header-h); left: 0; width: 100%;
    background: rgba(20, 20, 31, 0.96); backdrop-filter: blur(12px);
    flex-direction: column; align-items: flex-start; gap: 4px;
    padding: 16px 24px 20px; border-bottom: 1px solid rgba(255,255,255,0.08);
    transform: translateY(-120%); transition: transform 0.3s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; padding: 12px 14px; font-size: 16px; }
  .nav-links a.active::after { display: none; }
  .nav-countdown { display: none; }
}

/* ========== Hero ========== */
.hero {
  position: relative;
  background: var(--dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 130px 0 120px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(20, 20, 31, 0.94) 20%, rgba(20, 20, 31, 0.62) 55%, rgba(124, 58, 237, 0.25) 100%);
  z-index: 1;
}
.hero::after {
  content: "";
  position: absolute;
  right: -180px; bottom: -220px;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 77, 36, 0.18) 0%, transparent 70%);
  z-index: 1;
}
.hero-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 60px; }
.hero-content { flex: 1; max-width: 560px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255, 184, 0, 0.12); color: var(--warn);
  border: 1px solid rgba(255, 184, 0, 0.28);
  border-radius: 100px; padding: 6px 16px; font-size: 13px; font-weight: 700;
  margin-bottom: 20px;
}
.hero-badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--warn); animation: pulse 2s infinite; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 184, 0, 0.6); }
  50% { box-shadow: 0 0 0 6px rgba(255, 184, 0, 0); }
}
.hero h1 {
  color: #fff;
  font-size: 56px;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
  font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(135deg, #FF9A5A 0%, #FF4D24 40%, #7C3AED 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub { color: rgba(255, 255, 255, 0.72); font-size: 18px; line-height: 1.8; max-width: 480px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn-primary { background: var(--main-gradient); color: #fff; }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: scale(0.97); }
.btn-outline { background: #fff; color: var(--text); border: 1px solid #ddd; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.hero-visual { flex: 1; max-width: 480px; position: relative; }
.hero-visual img { width: 100%; aspect-ratio: 4 / 4; object-fit: cover; border-radius: 28px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45); }
.hero-visual::after {
  content: "";
  position: absolute; inset: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  pointer-events: none;
}
.hero-metrics {
  position: relative; z-index: 3;
  max-width: 1080px;
  margin: 70px auto 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(6px);
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 28px 32px;
  gap: 16px;
}
.metric-item { text-align: center; padding: 4px 12px; }
.metric-num {
  font-family: var(--font-num);
  font-size: 52px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--grad-end) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  display: inline-block;
}
.metric-num.pure { background: none; color: var(--dark); }
.metric-unit { font-size: 14px; color: var(--text-sub); margin-left: 2px; font-weight: 500; }
.metric-label { font-size: 13px; color: var(--text-sub); margin-top: 8px; }
@media (max-width: 1024px) {
  .hero-inner { flex-direction: column; gap: 40px; }
  .hero-content { max-width: 100%; }
  .hero-visual { max-width: 100%; }
  .hero h1 { font-size: 42px; }
}
@media (max-width: 768px) {
  .hero { padding: 110px 0 100px; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); margin-top: 50px; padding: 20px; }
  .metric-num { font-size: 40px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
}

/* ========== 通用板块 ========== */
.section { padding: 90px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-head h2 { font-size: 32px; font-weight: 800; letter-spacing: -0.5px; color: var(--text); line-height: 1.3; }
.section-head p { color: var(--text-sub); font-size: 16px; margin-top: 12px; }
.section-head .accent { color: var(--primary); }

@media (max-width: 768px) { .section { padding: 48px 0; }.section-head { margin-bottom: 36px; }.section-head h2 { font-size: 26px; } }

/* ========== 功能亮点 ========== */
.features { background: var(--bg); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid rgba(240, 240, 240, 1);
  padding: 32px 28px;
  transition: all 0.3s ease;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--primary); }
.feature-icon { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; margin-bottom: 20px; font-size: 24px; font-weight: 800; }
.fi-1 { background: linear-gradient(135deg, #FF4D24, #7C3AED); }
.fi-2 { background: linear-gradient(135deg, #FF4D24, #FFB800); }
.fi-3 { background: linear-gradient(135deg, #7C3AED, #00C48C); }
.fi-4 { background: linear-gradient(135deg, #00C48C, #FF4D24); }
.fi-5 { background: linear-gradient(135deg, #FFB800, #FF4D24); }
.fi-6 { background: linear-gradient(135deg, #7C3AED, #FF4D24); }
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.feature-card p { font-size: 15px; color: var(--text-sub); line-height: 1.7; }
.feature-more {
  display: inline-block; margin-top: 16px;
  color: var(--primary); font-size: 14px; font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.feature-more:hover { border-color: var(--primary); }
@media (max-width: 1024px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .feature-grid { grid-template-columns: 1fr; } }

/* ========== 深色数据区 ========== */
.stats-dark {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.stats-dark::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 20% 30%, rgba(255, 77, 36, 0.14) 0%, transparent 55%),
              radial-gradient(ellipse at 80% 70%, rgba(124, 58, 237, 0.16) 0%, transparent 55%);
}
.stats-grid { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat-item { text-align: center; padding: 20px; }
.stat-item .stat-num { font-family: var(--font-num); font-size: 56px; font-weight: 700; color: var(--warn); line-height: 1; display: inline-block; }
.stat-item:nth-child(2) .stat-num { color: var(--accent); }
.stat-item:nth-child(3) .stat-num { color: #fff; }
.stat-item:nth-child(4) .stat-num { color: var(--primary); }
.stat-item .stat-label { color: rgba(255, 255, 255, 0.65); font-size: 14px; margin-top: 10px; letter-spacing: 1px; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }.stat-item .stat-num { font-size: 42px; } }
@media (max-width: 520px) { .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }.stat-item { padding: 12px; }.stat-num { font-size: 36px !important; } }

/* ========== 适用场景交错 ========== */
.scenes { background: var(--bg); }
.scene-row { display: flex; align-items: center; gap: 60px; margin-bottom: 90px; }
.scene-row:last-child { margin-bottom: 40px; }
.scene-row.reverse { flex-direction: row-reverse; }
.scene-media { flex: 1; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 16 / 9; background: #e9e6e2; }
.scene-media img { width: 100%; height: 100%; object-fit: cover; }
.scene-content { flex: 1; }
.scene-content h3 { font-size: 26px; font-weight: 700; margin-bottom: 14px; color: var(--text); }
.scene-content p { font-size: 16px; color: var(--text-sub); line-height: 1.75; margin-bottom: 18px; }
.scene-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  display: inline-block;
  background: #F3F1ED;
  color: #1A1A2E;
  border-radius: var(--radius-sm);
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
}
.tag:hover { background: var(--primary); color: #fff; }
@media (max-width: 1024px) {
  .scene-row, .scene-row.reverse { flex-direction: column; gap: 32px; }
  .scene-media, .scene-content { width: 100%; }
  .scene-row { margin-bottom: 56px; }
}

/* ========== 推荐卡片 ========== */
.recs { background: var(--card); }
.rec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.rec-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  display: flex; flex-direction: column;
}
.rec-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--primary); }
.rec-card .rec-cover { aspect-ratio: 16 / 9; overflow: hidden; background: #e9e6e2; }
.rec-card .rec-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.rec-card:hover .rec-cover img { transform: scale(1.04); }
.rec-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.rec-cat { font-size: 12px; font-weight: 700; color: var(--primary); background: rgba(255, 77, 36, 0.08); display: inline-block; padding: 4px 10px; border-radius: 6px; align-self: flex-start; margin-bottom: 12px; }
.rec-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.rec-body p { font-size: 14px; color: var(--text-sub); margin-bottom: 16px; flex: 1; }
.rec-link { color: var(--primary); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.rec-link::after { content: "→"; transition: transform 0.2s; }
.rec-link:hover::after { transform: translateX(4px); }
@media (max-width: 1024px) { .rec-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .rec-grid { grid-template-columns: 1fr; } }

/* ========== FAQ ========== */
.faq { background: var(--bg); }
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 12px 32px;
}
.faq-item { padding: 18px 0; border-bottom: 1px solid #f1f1f1; }
.faq-item:last-child { border-bottom: none; }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 17px; font-weight: 700; color: var(--text);
  text-align: left; padding: 8px 0; transition: color 0.2s;
}
.faq-q:hover { color: var(--primary); }
.faq-q .plus {
  font-size: 24px; font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s;
  line-height: 1;
  flex-shrink: 0;
}
.faq-item.open .plus { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a p { color: var(--text-sub); font-size: 15px; line-height: 1.8; padding: 4px 24px 4px 0; }
.faq-item.open .faq-a { max-height: 300px; }
@media (max-width: 768px) { .faq-wrap { padding: 12px 20px; } }

/* ========== CTA ========== */
.cta {
  position: relative;
  background: var(--dark) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding: 100px 0;
  text-align: center;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255, 77, 36, 0.2) 0%, rgba(20, 20, 31, 0.82) 50%, rgba(124, 58, 237, 0.22) 100%);
  z-index: 1;
}
.cta::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  transform: translateX(-50%);
  width: 110%; height: 200px;
  background: radial-gradient(ellipse at center, rgba(255, 184, 0, 0.1) 0%, transparent 70%);
  z-index: 1;
}
.cta .container { position: relative; z-index: 2; }
.cta h2 { color: #fff; font-size: 36px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 14px; }
.cta .cta-sub { color: rgba(255, 255, 255, 0.7); font-size: 18px; margin-bottom: 36px; }
.cta .btn-lg { min-height: 56px; padding: 0 48px; font-size: 17px; }
@media (max-width: 768px) {
  .cta { padding: 64px 0; }
  .cta h2 { font-size: 28px; }
  .cta .cta-sub { font-size: 16px; }
}

/* ========== 页脚 ========== */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.7); }
.footer-top-line { height: 1px; background: linear-gradient(90deg, var(--primary), transparent 50%, var(--grad-end)); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding: 64px 0 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.75; color: rgba(255, 255, 255, 0.6); max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 15px; color: rgba(255, 255, 255, 0.6); transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--primary); }
.footer-contact p { font-size: 14px; margin-bottom: 10px; color: rgba(255, 255, 255, 0.6); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.07); padding: 20px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.footer-bottom-inner p { font-size: 13px; color: rgba(255, 255, 255, 0.4); }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 40px 0 32px; } }
@media (max-width: 520px) { .footer-bottom-inner { flex-direction: column; text-align: center; } }

/* ========== 动画 ========== */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }