*,::before,::after{box-sizing:border-box;border:0 solid}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#fff;color:#1a1a2e;line-height:1.6}
nav{position:fixed;top:0;width:100%;z-index:50;border-bottom:1px solid rgba(0,0,0,.06);background:rgba(255,255,255,.92);backdrop-filter:blur(12px)}
nav>div{max-width:1200px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between}
nav a{text-decoration:none;color:rgba(26,26,46,.55);font-size:14px;font-weight:500;transition:color .2s}
nav a:hover{color:#1a6ff5}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:8px;font-weight:600;font-size:15px;text-decoration:none;transition:all .2s;cursor:pointer;border:1px solid transparent}
.btn-white{background:#1a1a2e;color:#fff}
.btn-white:hover{background:#333;transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.15)}
.btn-outline{border:1px solid rgba(0,0,0,.15);color:#1a1a2e;background:#fff}
.btn-outline:hover{border-color:#1a1a2e;transform:translateY(-1px)}
.btn-primary{background:#1a6ff5;color:#fff}
.btn-primary:hover{background:#155dd4;transform:translateY(-1px);box-shadow:0 4px 16px rgba(26,111,245,.3)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== HERO ===== */
.hero{padding:120px 24px 80px;text-align:center;background:linear-gradient(180deg,#f0f4ff 0%,#fafbfc 40%,#fff 100%);position:relative;overflow:hidden}.hero::before{content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(26,111,245,.06) 0%,transparent 70%);pointer-events:none}
.hero .badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:9999px;background:rgba(26,111,245,.08);color:#1a6ff5;font-size:13px;font-weight:500;margin-bottom:28px}
.hero .badge .dot{width:7px;height:7px;background:#28c840;border-radius:50%;animation:pulse 2s infinite}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.15;margin:0 0 20px;letter-spacing:-.02em;color:#0a0a0a}
.hero h1 .highlight{background:linear-gradient(135deg,#1a6ff5,#6366f1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .subtitle{font-size:18px;color:rgba(26,26,46,.5);max-width:540px;margin:0 auto 36px;line-height:1.7}
.hero .actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}

/* ===== DEMO SCREENSHOT ===== */
.demo-preview{max-width:900px;margin:60px auto -80px;position:relative;z-index:2}
.demo-preview img{width:100%;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.12);border:1px solid rgba(0,0,0,.08)}
.demo-preview .glow{position:absolute;inset:-20px;background:radial-gradient(ellipse at center,rgba(26,111,245,.08),transparent 70%);pointer-events:none;border-radius:20px}

/* ===== TRUST BAR ===== */
.trust-bar{padding:60px 24px;text-align:center;background:#fff}
.trust-bar .label{font-size:13px;color:rgba(26,26,46,.35);text-transform:uppercase;letter-spacing:.1em;margin-bottom:24px}
.trust-bar .logos{display:flex;align-items:center;justify-content:center;gap:40px;flex-wrap:wrap}
.trust-bar .logo-item{height:28px;opacity:.3;filter:grayscale(1);transition:opacity .3s}
.trust-bar .logo-item:hover{opacity:.6}

/* ===== FEATURES ===== */
.features{padding:80px 24px;background:#fff}
.features h2{text-align:center;font-size:clamp(26px,4vw,36px);font-weight:700;margin:0 0 12px;color:#0a0a0a}
.features .section-sub{text-align:center;color:rgba(26,26,46,.45);max-width:500px;margin:0 auto 48px;font-size:16px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;max-width:1200px;margin:0 auto}
.card{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:32px;transition:all .25s}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,0,0,.08);border-color:rgba(26,111,245,.2)}
.card .icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px}
.card .icon-blue{background:rgba(26,111,245,.1);color:#1a6ff5}
.card .icon-pink{background:rgba(236,72,153,.1);color:#ec4899}
.card .icon-amber{background:rgba(245,158,11,.1);color:#f59e0b}
.card .icon-green{background:rgba(40,200,64,.1);color:#28c840}
.card .icon-purple{background:rgba(168,85,247,.1);color:#a855f7}
.card h3{font-size:16px;font-weight:600;margin:0 0 8px;color:#0a0a0a}
.card p{font-size:14px;color:rgba(26,26,46,.5);margin:0;line-height:1.6}

/* ===== CODE DEMO ===== */
.code-section{padding:80px 24px;background:linear-gradient(180deg,#fff 0%,#fafbfc 50%,#fff 100%)}
.code-section h2{text-align:center;font-size:clamp(26px,4vw,36px);font-weight:700;margin:0 0 40px;color:#0a0a0a}
.code-block{max-width:720px;margin:0 auto;background:#1a1a2e;border-radius:12px;overflow:hidden;box-shadow:0 8px 40px rgba(0,0,0,.15)}
.code-block .bar{display:flex;align-items:center;gap:8px;padding:14px 20px;background:#151528}
.code-block .bar span{width:10px;height:10px;border-radius:50%}
.code-block .bar .r{background:#ff5f57}.code-block .bar .y{background:#febc2e}.code-block .bar .g{background:#28c840}
.code-block .bar .title{margin-left:8px;font-size:12px;color:rgba(255,255,255,.3);font-family:monospace}
.code-block pre{margin:0;padding:24px;overflow-x:auto;font-size:13px;line-height:1.8;font-family:"SF Mono","Fira Code","Cascadia Code",monospace;color:#e5e5e5}
.code-block .c1{color:rgba(255,255,255,.4)}.code-block .c2{color:#6366f1}.code-block .c3{color:#28c840}.code-block .c4{color:#f59e0b}

/* ===== STATS ===== */
.stats{padding:60px 24px;max-width:900px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);text-align:center;gap:32px}
.stat-number{font-size:32px;font-weight:700;color:#0a0a0a;margin-bottom:6px}
.stat-label{font-size:14px;color:rgba(26,26,46,.45)}

/* ===== CTA ===== */
.cta-section{padding:80px 24px;text-align:center;background:#fafbfc}
.cta-box{max-width:640px;margin:0 auto;background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:48px;box-shadow:0 4px 24px rgba(0,0,0,.04)}
.cta-box h2{font-size:28px;font-weight:700;margin:0 0 12px;color:#0a0a0a}
.cta-box p{color:rgba(26,26,46,.5);margin:0 0 28px;font-size:16px}

/* ===== FOOTER ===== */
footer{border-top:1px solid rgba(0,0,0,.06);padding:60px 0;background:#fff}
footer .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;max-width:1200px;margin:0 auto;padding:0 24px}
footer h4{font-size:13px;font-weight:600;margin:0 0 16px;color:#0a0a0a;text-transform:uppercase;letter-spacing:.05em}
footer a,footer p{font-size:13px;color:rgba(26,26,46,.45);text-decoration:none;line-height:2.2;transition:color .2s}
footer a:hover{color:#1a6ff5}
footer .footer-bottom{border-top:1px solid rgba(0,0,0,.05);margin-top:40px;padding-top:24px;text-align:center;font-size:12px;color:rgba(26,26,46,.3)}

/* ===== UTILITY ===== */
.pulse{animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:rgba(26,26,46,.5);margin-bottom:6px;font-weight:500}
.form-input{width:100%;padding:12px 16px;background:#fff;border:1px solid rgba(0,0,0,.12);border-radius:8px;color:#1a1a2e;font-size:14px;outline:none;transition:border-color .2s}
.form-input:focus{border-color:#1a6ff5;box-shadow:0 0 0 3px rgba(26,111,245,.1)}
.form-card{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:32px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;color:rgba(26,26,46,.45);padding-bottom:12px;border-bottom:1px solid rgba(0,0,0,.06);font-weight:500}
td{padding:12px 0;border-bottom:1px solid rgba(0,0,0,.03)}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;max-width:1000px;margin:0 auto}
.pricing-card{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:32px;display:flex;flex-direction:column;position:relative}
.pricing-card.featured{border-color:#1a6ff5;box-shadow:0 4px 20px rgba(26,111,245,.1)}
.pricing-card h3{font-size:18px;margin:0 0 4px}
.pricing-card .price{font-size:36px;font-weight:700;margin:8px 0 4px}
.pricing-card .price span{font-size:16px;font-weight:400;color:rgba(26,26,46,.4)}
.pricing-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:#1a6ff5;color:#fff;font-size:11px;padding:4px 14px;border-radius:9999px;font-weight:600}
.pricing-features{list-style:none;padding:0;margin:20px 0 24px;flex:1;font-size:13px}
.pricing-features li{padding:6px 0;color:rgba(26,26,46,.55)}
.pricing-features li::before{content:"✓ ";color:#28c840}
.tag{display:inline-block;padding:2px 10px;border-radius:9999px;font-size:11px;font-family:monospace}
.tag-free{background:rgba(0,0,0,.05);color:rgba(26,26,46,.5)}
.tag-pro{background:rgba(26,111,245,.1);color:#1a6ff5}
.tag-business{background:rgba(168,85,247,.1);color:#a855f7}
.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mb-8{margin-bottom:32px}.mb-12{margin-bottom:48px}
.mt-4{margin-top:16px}.mt-8{margin-top:32px}
.text-center{text-align:center}.text-sm{font-size:13px}.text-xs{font-size:11px}
.flex{display:flex}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-4{gap:16px}.gap-6{gap:24px}
.grid{display:grid}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}
.max-w-xs{max-width:320px}.max-w-md{max-width:448px}.max-w-xl{max-width:576px}.max-w-2xl{max-width:672px}.max-w-3xl{max-width:768px}
.mx-auto{margin-left:auto;margin-right:auto}
.w-full{width:100%}.overflow-x-auto{overflow-x:auto}
.rounded-lg{border-radius:8px}.rounded-xl{border-radius:12px}.rounded-2xl{border-radius:16px}
.p-4{padding:16px}.p-6{padding:24px}.p-8{padding:32px}.px-6{padding-left:24px;padding-right:24px}.py-4{padding-top:16px;padding-bottom:16px}
.flex-col{flex-direction:column}.flex-1{flex:1}.shrink-0{flex-shrink:0}
.relative{position:relative}.hidden{display:none}.block{display:block}.inline-block{display:inline-block}
.text-white{color:#fff}.text-gray{color:rgba(26,26,46,.45)}.text-blue{color:#1a6ff5}.text-green{color:#28c840}.text-purple{color:#a855f7}
.bg-card{background:#fff;border:1px solid rgba(0,0,0,.08)}.border-card{border:1px solid rgba(0,0,0,.06)}
.space-y-3>*+*{margin-top:12px}.space-y-4>*+*{margin-top:16px}.space-y-6>*+*{margin-top:24px}