/* ===================== Reset & Base ===================== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
    --color-primary:#4f46e5;
    --color-primary-dark:#4338ca;
    --color-primary-light:#6366f1;
    --color-accent:#06b6d4;
    --color-text:#0f172a;
    --color-text-light:#475569;
    --color-text-muted:#94a3b8;
    --color-bg:#ffffff;
    --color-bg-alt:#f8fafc;
    --color-bg-dark:#0f172a;
    --color-border:#e2e8f0;
    --color-white:#ffffff;
    --shadow-sm:0 1px 2px rgba(0,0,0,.04);
    --shadow:0 4px 6px -1px rgba(0,0,0,.06),0 2px 4px -2px rgba(0,0,0,.04);
    --shadow-lg:0 10px 15px -3px rgba(0,0,0,.06),0 4px 6px -4px rgba(0,0,0,.04);
    --shadow-xl:0 20px 25px -5px rgba(0,0,0,.08),0 8px 10px -6px rgba(0,0,0,.04);
    --radius:10px;
    --radius-lg:16px;
    --radius-xl:24px;
    --transition:.3s cubic-bezier(.4,0,.2,1);
    --container-max:1200px;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;color:var(--color-text);line-height:1.6;background:var(--color-bg);overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul{list-style:none}
svg{display:block}
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}

/* ===================== Buttons ===================== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;font-size:.95rem;font-weight:600;border-radius:var(--radius);transition:var(--transition);cursor:pointer;border:none;white-space:nowrap}
.btn-sm{padding:10px 24px;font-size:.875rem}
.btn-primary{background:var(--color-primary);color:var(--color-white);box-shadow:0 4px 14px rgba(79,70,229,.25)}
.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(79,70,229,.35)}
.btn-outline{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}
.btn-outline:hover{background:var(--color-primary);color:var(--color-white);transform:translateY(-2px)}
.btn-white{background:var(--color-white);color:var(--color-primary);box-shadow:0 4px 14px rgba(0,0,0,.1)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.15)}
.btn-ghost{background:transparent;color:var(--color-white);border:2px solid rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.btn-arrow{width:18px;height:18px;transition:transform .3s ease}
.btn:hover .btn-arrow{transform:translateX(4px)}

/* ===================== Navbar ===================== */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.85);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:var(--transition)}
.navbar.scrolled{box-shadow:var(--shadow);border-bottom-color:var(--color-border)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;letter-spacing:-.5px}
.logo-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:10px;color:#fff}
.logo-icon svg{width:20px;height:20px}
.logo-text{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-menu{display:flex;gap:4px}
.nav-link{padding:8px 16px;font-size:.9rem;font-weight:500;color:var(--color-text-light);border-radius:var(--radius);transition:var(--transition)}
.nav-link:hover{color:var(--color-primary);background:rgba(79,70,229,.06)}
.nav-link.active{color:var(--color-primary)}
.nav-cta{display:flex;align-items:center}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--color-text);border-radius:2px;transition:var(--transition)}

/* ===================== Hero ===================== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:linear-gradient(135deg,#f5f3ff 0%,#ede9fe 30%,#e0f2fe 70%,#f0f9ff 100%);overflow:hidden}
.hero-bg-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(79,70,229,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(79,70,229,.03) 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(ellipse at center,black 30%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at center,black 30%,transparent 70%)}
.hero-content{position:relative;z-index:1;text-align:center;max-width:820px;margin:0 auto;padding:120px 0 80px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(79,70,229,.08);border:1px solid rgba(79,70,229,.15);border-radius:999px;font-size:.8rem;font-weight:500;color:var(--color-primary);margin-bottom:28px}
.badge-dot{width:8px;height:8px;background:var(--color-primary);border-radius:50%;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(79,70,229,.4)}50%{opacity:.8;box-shadow:0 0 0 6px rgba(79,70,229,0)}}
.hero-title{font-size:3.75rem;font-weight:800;letter-spacing:-2px;color:var(--color-text);margin-bottom:1.5rem;line-height:1.15}
.gradient-text{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.15rem;color:var(--color-text-light);margin-bottom:2.5rem;line-height:1.7;max-width:640px;margin-left:auto;margin-right:auto}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}
.hero-trust{display:flex;gap:32px;justify-content:center;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--color-text-light);font-weight:500}
.trust-icon{display:flex;align-items:center;justify-content:center;width:20px;height:20px;background:var(--color-primary);color:#fff;border-radius:50%;font-size:.7rem;font-weight:700}

/* ===================== Stats ===================== */
.stats{padding:80px 0;background:var(--color-bg)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;padding:24px;border-radius:var(--radius-lg);transition:var(--transition)}
.stat-item:hover{background:var(--color-bg-alt)}
.stat-number{font-size:3rem;font-weight:800;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-1px;line-height:1}
.stat-label{margin-top:8px;font-size:.9rem;color:var(--color-text-light)}

/* ===================== Section Header ===================== */
.section-header{text-align:center;max-width:640px;margin:0 auto 56px}
.section-tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:2px;color:var(--color-primary);background:rgba(79,70,229,.06);padding:6px 16px;border-radius:999px;margin-bottom:20px}
.section-title{font-size:2.25rem;font-weight:700;color:var(--color-text);letter-spacing:-1px;margin-bottom:12px}
.section-desc{font-size:1.05rem;color:var(--color-text-light)}

/* ===================== Features ===================== */
.features{padding:100px 0;background:var(--color-bg-alt)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--color-white);padding:32px;border-radius:var(--radius-lg);border:1px solid var(--color-border);transition:var(--transition)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:transparent}
.feature-card-lg{grid-column:span 1}
.feature-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;border-radius:14px;margin-bottom:20px}
.feature-icon svg{width:28px;height:28px}
.feature-icon-blue{background:rgba(79,70,229,.08);color:#4f46e5}
.feature-icon-purple{background:rgba(139,92,246,.08);color:#8b5cf6}
.feature-icon-cyan{background:rgba(6,182,212,.08);color:#06b6d4}
.feature-icon-orange{background:rgba(249,115,22,.08);color:#f97316}
.feature-icon-green{background:rgba(16,185,129,.08);color:#10b981}
.feature-icon-red{background:rgba(239,68,68,.08);color:#ef4444}
.feature-title{font-size:1.2rem;font-weight:600;margin-bottom:8px;color:var(--color-text)}
.feature-desc{font-size:.9rem;color:var(--color-text-light);line-height:1.6}
.feature-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.tag{font-size:.75rem;font-weight:500;color:var(--color-text-light);background:var(--color-bg-alt);padding:4px 12px;border-radius:999px}

/* ===================== Workflow ===================== */
.workflow{padding:100px 0;background:var(--color-bg)}
.workflow-steps{display:flex;align-items:flex-start;justify-content:space-between;gap:0;position:relative}
.workflow-step{flex:1;display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;padding:0 16px}
.step-number{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:16px}
.step-content{max-width:200px}
.step-title{font-size:1.1rem;font-weight:600;color:var(--color-text);margin-bottom:8px}
.step-desc{font-size:.85rem;color:var(--color-text-light);line-height:1.5}
.step-line{position:absolute;top:1.25rem;left:calc(50% + 40px);width:calc(100% - 80px);height:2px;background:linear-gradient(90deg,var(--color-border),var(--color-border));z-index:-1}
.workflow-step:last-child .step-line{display:none}

/* ===================== Solutions ===================== */
.solutions{padding:100px 0;background:var(--color-bg-alt)}
.solutions-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.solution-card{background:var(--color-white);padding:36px 32px;border-radius:var(--radius-lg);border:1px solid var(--color-border);transition:var(--transition);position:relative}
.solution-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:transparent}
.solution-card-featured{border:2px solid var(--color-primary);box-shadow:0 4px 20px rgba(79,70,229,.1)}
.solution-badge{position:absolute;top:-12px;right:32px;background:var(--color-primary);color:#fff;font-size:.75rem;font-weight:600;padding:4px 14px;border-radius:999px}
.solution-header{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.solution-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:rgba(79,70,229,.08);border-radius:12px;color:var(--color-primary)}
.solution-icon svg{width:24px;height:24px}
.solution-title{font-size:1.3rem;font-weight:700;color:var(--color-text)}
.solution-desc{font-size:.9rem;color:var(--color-text-light);line-height:1.6;margin-bottom:24px}
.solution-list{display:flex;flex-direction:column;gap:10px}
.solution-list li{display:flex;align-items:center;gap:10px;font-size:.875rem;color:var(--color-text)}
.solution-list li::before{content:'';width:6px;height:6px;background:var(--color-primary);border-radius:50%;flex-shrink:0}

/* ===================== Partners ===================== */
.partners{padding:100px 0;background:var(--color-bg)}
.partners-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.partner-logo{display:flex;align-items:center;justify-content:center;height:80px;border-radius:var(--radius);background:var(--color-bg-alt);border:1px solid var(--color-border);font-size:1rem;font-weight:600;color:var(--color-text-muted);transition:var(--transition)}
.partner-logo:hover{background:var(--color-white);box-shadow:var(--shadow);color:var(--color-text);transform:translateY(-2px)}

/* ===================== CTA ===================== */
.cta-section{padding:100px 0;background:var(--color-bg)}
.cta-box{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));border-radius:var(--radius-xl);padding:56px 64px;display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(6,182,212,.15),transparent 70%);top:-150px;right:-50px}
.cta-box::after{content:'';position:absolute;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%);bottom:-100px;left:-50px}
.cta-content{position:relative;z-index:1}
.cta-title{font-size:2rem;font-weight:700;color:#fff;margin-bottom:8px}
.cta-desc{font-size:1rem;color:rgba(255,255,255,.8)}
.cta-actions{display:flex;gap:16px;position:relative;z-index:1;flex-shrink:0}

/* ===================== Contact ===================== */
.contact{padding:100px 0;background:var(--color-bg-alt)}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:var(--color-white);padding:40px 32px;border-radius:var(--radius-lg);text-align:center;border:1px solid var(--color-border);transition:var(--transition)}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.contact-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:rgba(79,70,229,.08);border-radius:50%;margin:0 auto 20px;color:var(--color-primary)}
.contact-icon svg{width:26px;height:26px}
.contact-title{font-size:1.1rem;font-weight:600;margin-bottom:8px;color:var(--color-text)}
.contact-info{font-size:.9rem;color:var(--color-text-light);line-height:1.6}

/* ===================== Footer ===================== */
.footer{background:var(--color-bg-dark);color:var(--color-text-muted);padding:64px 0 0}
.footer-container{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .footer-logo{font-size:1.5rem;font-weight:700;color:var(--color-white);display:block;margin-bottom:12px}
.footer-desc{font-size:.9rem;line-height:1.6;max-width:360px}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.footer-title{color:var(--color-white);font-size:.95rem;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:.875rem;color:var(--color-text-muted);padding:4px 0;transition:var(--transition)}
.footer-col a:hover{color:var(--color-primary-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center}
.footer-bottom p{font-size:.8rem;color:var(--color-text-muted)}

/* ===================== Animations ===================== */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ===================== Responsive ===================== */
@media(max-width:968px){
    .features-grid{grid-template-columns:repeat(2,1fr)}
    .solutions-grid{grid-template-columns:1fr}
    .partners-grid{grid-template-columns:repeat(3,1fr)}
    .cta-box{flex-direction:column;text-align:center;padding:40px 32px}
    .footer-container{grid-template-columns:1fr;gap:32px}
    .workflow-steps{flex-wrap:wrap;justify-content:center;gap:32px}
    .workflow-step{flex:0 0 calc(33% - 32px)}
    .step-line{display:none}
}
@media(max-width:768px){
    .nav-menu,.nav-cta{position:fixed;top:72px;left:0;right:0;flex-direction:column;background:var(--color-white);padding:16px;gap:4px;box-shadow:var(--shadow-lg);transform:translateY(-100%);opacity:0;pointer-events:none;transition:var(--transition)}
    .nav-cta{top:auto;bottom:0;transform:translateY(100%)}
    .nav-menu.open,.nav-cta.open{transform:translateY(0);opacity:1;pointer-events:auto}
    .nav-cta.open{position:static;transform:none;opacity:1;pointer-events:auto;box-shadow:none;padding:0;background:none}
    .nav-toggle{display:flex;z-index:1001}
    .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-title{font-size:2.5rem}
    .hero-subtitle{font-size:1rem}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .stat-number{font-size:2.25rem}
    .features-grid{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .section-title{font-size:1.75rem}
    .footer-links{grid-template-columns:1fr 1fr}
    .workflow-step{flex:0 0 calc(50% - 32px)}
    .partners-grid{grid-template-columns:repeat(2,1fr)}
    .cta-title{font-size:1.5rem}
}
@media(max-width:480px){
    .hero-title{font-size:1.875rem}
    .hero-actions{flex-direction:column;width:100%}
    .btn{width:100%}
    .stats-grid{grid-template-columns:1fr}
    .footer-links{grid-template-columns:1fr}
    .workflow-step{flex:0 0 100%}
    .hero-trust{flex-direction:column;gap:12px}
    .partners-grid{grid-template-columns:1fr}
}