*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#FF6B35;--primary-dark:#E55A2B;--accent:#FF8F5E;--accent-2:#2ECC71;--bg:#FAF9F6;--bg-2:#F3F0EB;--card:#FFFFFF;--text:#2D2A26;--text-2:#7A756E;--border:#E8E4DD;--white:#fff;--shadow:0 2px 12px rgba(0,0,0,.04);--shadow-hover:0 8px 24px rgba(0,0,0,.08);--radius:12px;--transition:.3s ease}
[data-theme="dark"]{--primary:#FF8F5E;--primary-dark:#FF6B35;--accent:#FFB088;--accent-2:#2ECC71;--bg:#1A1815;--bg-2:#242120;--card:#2A2725;--text:#E8E4DD;--text-2:#9B9590;--border:#3A3633;--white:#fff;--shadow:0 2px 12px rgba(0,0,0,.2);--shadow-hover:0 8px 24px rgba(0,0,0,.3)}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--primary:#FF8F5E;--primary-dark:#FF6B35;--accent:#FFB088;--accent-2:#2ECC71;--bg:#1A1815;--bg-2:#242120;--card:#2A2725;--text:#E8E4DD;--text-2:#9B9590;--border:#3A3633;--white:#fff;--shadow:0 2px 12px rgba(0,0,0,.2);--shadow-hover:0 8px 24px rgba(0,0,0,.3)}}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;transition:background .3s ease,color .3s ease}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.nav,.nav *,.feature-card,.scene-item,.stat-item,.footer,.trust-item,.contact-brand,.params-table,.scene-cat,.mockup,.app-mockup,.app-feature,.highlight-item{transition:background .3s ease,color .3s ease,border-color .3s ease,box-shadow .3s ease}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;transition:var(--transition);background:var(--bg);border-bottom:1px solid var(--border)}
.nav.scrolled{padding:10px 0;box-shadow:0 2px 30px rgba(0,0,0,.3)}
.nav .container{display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:700}
.nav-logo img{width:40px;height:40px;border-radius:8px}
.nav-logo span{color:var(--text);font-weight:700}
.nav-menu{display:flex;gap:32px;list-style:none}
.nav-menu a{color:var(--text-2);font-size:.95rem;font-weight:500;transition:var(--transition);position:relative}
.nav-menu a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--primary);transition:width .3s ease}
.nav-menu a:hover,.nav-menu a.active{color:var(--text)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);transition:var(--transition);border-radius:2px}
.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)}
.nav-actions{display:flex;align-items:center;gap:8px}
.theme-toggle{background:none;border:none;cursor:pointer;width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:var(--transition)}
.theme-toggle:hover{background:rgba(0,0,0,.05);color:var(--text)}
[data-theme="dark"] .theme-toggle:hover{background:rgba(255,255,255,.08)}
.theme-toggle svg{width:20px;height:20px}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}
.page-header{padding:140px 0 60px;text-align:center;position:relative;overflow:hidden}
.page-header .container{position:relative;z-index:1}
.page-header h1{font-size:3rem;font-weight:700;margin-bottom:16px;color:var(--text)}
.page-header h1 .gradient{color:var(--primary)}
.page-header p{color:var(--text-2);font-size:1.2rem}
.breadcrumb{padding:12px 0;text-align:center}
.breadcrumb ol{display:flex;align-items:center;justify-content:center;gap:8px;list-style:none;font-size:.9rem}
.breadcrumb a{color:var(--text-2);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb li:not(:last-child)::after{content:'/';color:var(--border);margin-left:8px}
.breadcrumb li:last-child{color:var(--text)}
.section-header{text-align:center;margin-bottom:60px}
.section-header h2{font-size:2.5rem;font-weight:700;margin-bottom:16px;color:var(--text)}
.section-header h2 .gradient{color:var(--primary)}
.section-header p{color:var(--text-2);font-size:1.1rem}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);border:none;text-decoration:none}
.btn-primary{background:var(--primary);color:var(--white);box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline{background:transparent;color:var(--text);border:2px solid var(--border)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.feature-card{background:var(--card);border-radius:var(--radius);padding:40px;border:1px solid var(--border);transition:var(--transition);position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card .icon{width:60px;height:60px;border-radius:14px;background:rgba(255,107,53,.08);display:flex;align-items:center;justify-content:center;font-size:1.8rem;margin-bottom:20px}
.feature-card h3{font-size:1.4rem;font-weight:700;margin-bottom:12px;color:var(--text)}
.feature-card p{color:var(--text-2);font-size:1rem}
.feature-card img{margin-top:20px;border-radius:10px;width:100%}
.cta{padding:80px 0;text-align:center;position:relative;overflow:hidden}
.cta .container{position:relative;z-index:1}
.cta h2{font-size:2.5rem;font-weight:700;margin-bottom:16px;color:var(--text)}
.cta h2 .gradient{color:var(--primary)}
.cta p{color:var(--text-2);font-size:1.1rem;margin-bottom:32px}
.footer{background:var(--bg-2);padding:40px 0 30px;border-top:1px solid var(--border)}
.footer-bottom{text-align:center;color:var(--text-2);font-size:.85rem}
.mobile-break{display:none}
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.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}
.icon>svg,.ti-icon>svg,.scene-icon>svg,.af-icon>svg,.hi-icon>svg,.pf-icon>svg,.mi-icon>svg,.cm-icon>svg,.dim-icon>svg,.avatar>svg{width:100%;height:100%}
.scene-icon>svg,.af-icon>svg,.ti-icon>svg{width:20%;height:20%}
@media(max-width:768px){
.nav-menu{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:var(--bg);flex-direction:column;justify-content:center;align-items:center;gap:24px;z-index:99}
.nav-menu.open{display:flex}
.nav-menu a{font-size:1.5rem;color:var(--text)}
.nav-toggle{display:flex;z-index:101}
.section-header h2,.cta h2,.page-header h1{font-size:1.8rem}
.mobile-break{display:block}
}