/* ========== Reset & Base ========== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#2563eb;--primary-light:#3b82f6;--primary-dark:#1d4ed8;
  --primary-bg:rgba(37,99,235,.06);
  --text:#1e293b;--text-secondary:#64748b;--text-muted:#94a3b8;
  --bg:#ffffff;--bg-section:#f8fafc;--bg-card:#ffffff;
  --border:#e2e8f0;
  --radius:16px;--radius-lg:24px;--radius-full:9999px;
  --shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 10px 40px rgba(0,0,0,.08);
  --shadow-xl:0 25px 60px rgba(0,0,0,.12);
  --nav-height:72px;
  --max-width:1200px;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit;border:none;outline:none;background:none}
ul{list-style:none}

/* ========== Utilities ========== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section-label{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:1px;margin-bottom:16px;padding:6px 16px;background:var(--primary-bg);border-radius:var(--radius-full)}
.section-title{font-size:clamp(28px,4vw,42px);font-weight:700;color:var(--text);line-height:1.3;margin-bottom:16px}
.section-desc{font-size:17px;color:var(--text-secondary);max-width:600px;line-height:1.7}
.section-header{text-align:center;margin-bottom:64px}
.section-header .section-desc{margin:0 auto}
.text-center{text-align:center}
.text-gradient{background:linear-gradient(135deg,var(--primary),#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ========== Reveal Animation ========== */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s ease,transform .8s ease}
.reveal.active{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.4s}

/* ========== Navbar ========== */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);z-index:1000;transition:var(--transition)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
.navbar.scrolled{background:rgba(255,255,255,.85);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid rgba(0,0,0,.06);box-shadow:0 1px 12px rgba(0,0,0,.05)}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--text)}
.nav-logo-img{height:36px;width:auto;border-radius:8px}
.nav-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),#7c3aed);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:800}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:8px 18px;font-size:15px;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-full);transition:var(--transition)}
.nav-links a:hover{color:var(--primary);background:var(--primary-bg)}
.nav-cta{padding:10px 24px!important;background:var(--primary)!important;color:#fff!important;font-weight:600!important;box-shadow:0 2px 12px rgba(37,99,235,.3)}
.nav-cta:hover{background:var(--primary-dark)!important;transform:translateY(-1px);box-shadow:0 4px 16px rgba(37,99,235,.4)!important}

/* Mobile Menu */
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ========== Hero ========== */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:var(--nav-height);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(37,99,235,.08),transparent 70%);border-radius:50%;pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-100px;left:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(124,58,237,.06),transparent 70%);border-radius:50%;pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero-content{max-width:560px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;background:var(--primary-bg);border:1px solid rgba(37,99,235,.12);border-radius:var(--radius-full);font-size:14px;font-weight:500;color:var(--primary);margin-bottom:28px}
.hero-badge-dot{width:8px;height:8px;background:#22c55e;border-radius:50%;animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.4}}
.hero-title{font-size:clamp(36px,5.5vw,60px);font-weight:800;line-height:1.15;margin-bottom:20px;letter-spacing:-.02em}
.hero-desc{font-size:18px;color:var(--text-secondary);line-height:1.7;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;font-size:16px;font-weight:600;border-radius:var(--radius-full);transition:var(--transition);cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 20px rgba(37,99,235,.3)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(37,99,235,.4)}
.btn-outline{border:2px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-bg)}

/* Phone Mockup */
.hero-phone{display:flex;justify-content:center;align-items:center;position:relative}
.phone-frame{width:280px;height:560px;background:#1a1a1a;border-radius:40px;padding:12px;box-shadow:var(--shadow-xl),0 0 0 1px rgba(255,255,255,.1);position:relative;transform:perspective(1000px) rotateY(-5deg) rotateX(2deg);transition:transform .6s ease}
.phone-frame:hover{transform:perspective(1000px) rotateY(0) rotateX(0)}
.phone-screen{width:100%;height:100%;background:#f8fafc;border-radius:30px;overflow:hidden;position:relative}
.phone-notch{position:absolute;top:0;left:50%;transform:translateX(-50%);width:120px;height:28px;background:#1a1a1a;border-radius:0 0 18px 18px;z-index:2}
.phone-content{padding:40px 16px 16px;height:100%;display:flex;flex-direction:column;gap:12px}
.phone-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.phone-header-bar{width:60%;height:10px;background:#e2e8f0;border-radius:5px}
.phone-header-dots{display:flex;gap:6px}
.phone-header-dots span{width:10px;height:10px;background:#e2e8f0;border-radius:50%}
.phone-card{background:#fff;border-radius:12px;padding:12px;box-shadow:0 1px 3px rgba(0,0,0,.05);flex:1;display:flex;flex-direction:column;gap:8px}
.phone-card-title{height:10px;width:50%;background:var(--primary);border-radius:5px;opacity:.2}
.phone-card-line{height:8px;background:#e2e8f0;border-radius:4px}
.phone-card-line:nth-child(3){width:80%}
.phone-card-line:nth-child(4){width:65%}
.phone-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.phone-grid-item{display:flex;flex-direction:column;align-items:center;gap:4px}
.phone-grid-icon{width:32px;height:32px;border-radius:8px;background:var(--primary-bg)}
.phone-grid-text{height:6px;width:24px;background:#e2e8f0;border-radius:3px}
.phone-float-card{position:absolute;right:-30px;top:80px;background:#fff;border-radius:16px;padding:16px 20px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:12px;animation:float 4s ease-in-out infinite;z-index:3}
.phone-float-icon{width:40px;height:40px;background:linear-gradient(135deg,#22c55e,#16a34a);border-radius:12px;display:flex;align-items:center;justify-content:center}
.phone-float-icon svg{width:20px;height:20px;fill:#fff}
.phone-float-text{font-size:13px;font-weight:600;color:var(--text)}
.phone-float-sub{font-size:11px;color:#22c55e}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ========== Features ========== */
.features{background:var(--bg-section)}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;transition:var(--transition);cursor:default;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),#7c3aed);opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-icon svg{width:28px;height:28px}
.feature-icon-blue{background:rgba(37,99,235,.1)}
.feature-icon-blue svg{fill:var(--primary)}
.feature-icon-green{background:rgba(34,197,94,.1)}
.feature-icon-green svg{fill:#16a34a}
.feature-icon-purple{background:rgba(124,58,237,.1)}
.feature-icon-purple svg{fill:#7c3aed}
.feature-icon-orange{background:rgba(249,115,22,.1)}
.feature-icon-orange svg{fill:#ea580c}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--text-secondary);line-height:1.7}

/* ========== Highlights ========== */
.highlights-grid{display:flex;flex-direction:column;gap:80px}
.highlight-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.highlight-row.reverse .highlight-visual{order:-1}
.highlight-visual{border-radius:var(--radius-lg);overflow:hidden;position:relative}
.highlight-img{width:100%;aspect-ratio:4/3;background:linear-gradient(135deg,var(--primary-bg),rgba(124,58,237,.06));border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;position:relative}
.highlight-img-inner{width:80%;height:70%;background:rgba(255,255,255,.8);border-radius:12px;box-shadow:var(--shadow);padding:24px;display:flex;flex-direction:column;gap:12px}
.highlight-img-bar{height:12px;border-radius:6px}
.highlight-img-row{display:flex;gap:8px}
.highlight-img-row span{flex:1;height:40px;background:rgba(37,99,235,.08);border-radius:8px}
.highlight-badge{position:absolute;top:16px;right:16px;padding:8px 16px;background:#fff;border-radius:var(--radius-full);font-size:13px;font-weight:600;color:var(--primary);box-shadow:var(--shadow)}
.highlight-content .section-label{margin-bottom:16px}
.highlight-content h3{font-size:clamp(24px,3vw,32px);font-weight:700;margin-bottom:16px;line-height:1.4}
.highlight-content p{font-size:16px;color:var(--text-secondary);line-height:1.8;margin-bottom:24px}
.highlight-list{display:flex;flex-direction:column;gap:12px}
.highlight-list li{display:flex;align-items:center;gap:12px;font-size:15px;color:var(--text-secondary)}
.highlight-list li svg{width:20px;height:20px;fill:#22c55e;flex-shrink:0}

/* ========== Steps ========== */
.steps{background:var(--bg-section)}
.steps-track{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative}
.steps-track::before{content:'';position:absolute;top:40px;left:calc(12.5% + 20px);right:calc(12.5% + 20px);height:3px;background:linear-gradient(90deg,var(--primary),#7c3aed);border-radius:2px;z-index:0}
.step-item{text-align:center;position:relative;z-index:1}
.step-num{width:80px;height:80px;border-radius:50%;background:var(--bg-card);border:3px solid var(--primary);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;color:var(--primary);margin:0 auto 20px;transition:var(--transition);box-shadow:0 4px 16px rgba(37,99,235,.1)}
.step-item:hover .step-num{background:var(--primary);color:#fff;transform:scale(1.1)}
.step-item h4{font-size:18px;font-weight:700;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--text-secondary);line-height:1.6;padding:0 8px}

/* ========== Download ========== */
.download-card{background:linear-gradient(135deg,var(--primary),#7c3aed);border-radius:var(--radius-lg);padding:80px 60px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;color:#fff;position:relative;overflow:hidden}
.download-card::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;background:rgba(255,255,255,.06);border-radius:50%;pointer-events:none}
.download-card::after{content:'';position:absolute;bottom:-30%;left:-10%;width:300px;height:300px;background:rgba(255,255,255,.04);border-radius:50%;pointer-events:none}
.download-content{position:relative;z-index:1}
.download-content h3{font-size:clamp(28px,4vw,38px);font-weight:800;margin-bottom:16px}
.download-content p{font-size:17px;opacity:.85;line-height:1.7;margin-bottom:32px}
.download-buttons{display:flex;gap:16px;flex-wrap:wrap}
.download-btn{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;background:rgba(255,255,255,.15);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);color:#fff;font-weight:600;font-size:15px;cursor:pointer;transition:var(--transition)}
.download-btn:hover{background:rgba(255,255,255,.25);transform:translateY(-2px)}
.download-btn svg{width:24px;height:24px;fill:#fff}
.download-qr{display:flex;flex-direction:column;align-items:center;gap:16px;position:relative;z-index:1}
.download-qr-box{width:180px;height:180px;background:#fff;border-radius:var(--radius);padding:16px;display:flex;align-items:center;justify-content:center}
.download-qr-box svg{width:100%;height:100%}
.download-qr-text{font-size:14px;opacity:.7}

/* ========== Footer ========== */
.footer{background:var(--bg-section);border-top:1px solid var(--border);padding:48px 0 32px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-brand{font-size:16px;font-weight:700;color:var(--text)}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:14px;color:var(--text-secondary);transition:var(--transition)}
.footer-links a:hover{color:var(--primary)}
.footer-copyright{font-size:13px;color:var(--text-muted);margin-top:24px;text-align:center;width:100%;display:flex;flex-direction:column;gap:6px;align-items:center}
.footer-icp{color:var(--text-muted);transition:var(--transition);display:inline-block}
.footer-icp:hover{color:var(--primary)}

/* ========== Responsive ========== */
@media(max-width:968px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-content{max-width:100%;display:flex;flex-direction:column;align-items:center}
  .hero-actions{justify-content:center}
  .hero-phone{display:none}
  .highlight-row,.highlight-row.reverse{grid-template-columns:1fr;gap:40px}
  .highlight-row .highlight-visual{order:0}
  .download-card{grid-template-columns:1fr;text-align:center}
  .download-buttons{justify-content:center}
}
@media(max-width:768px){
  .section{padding:72px 0}
  .nav-links{display:none;position:fixed;top:var(--nav-height);left:0;right:0;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);flex-direction:column;padding:24px;gap:8px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 20px;width:100%;text-align:center;border-radius:12px}
  .nav-toggle{display:flex}
  .steps-track{grid-template-columns:repeat(2,1fr);gap:40px}
  .steps-track::before{display:none}
  .features-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .features-grid{grid-template-columns:1fr}
  .steps-track{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;width:100%}
  .btn{width:100%}
  .download-buttons{flex-direction:column;width:100%}
  .download-btn{justify-content:center}
}