*{box-sizing:border-box;margin:0;padding:0}body{color:#262626;background:#fff;font-family:Helvetica Neue,Helvetica,Arial,Microsoft YaHei,sans-serif;line-height:1.3}#root{width:100%;min-height:100svh}:root{--color-white:#fff;--color-near-black:#262626;--color-meta-gray:#757575;--color-silver:#bbb;--color-bmw-blue:#1c69d4;--color-bmw-focus:#0653b6;--color-dark-bg:#0d0d0d;--color-nav-bg:#1a1a1a;--color-light-bg:#f7f7f7;--color-border:#e0e0e0;--color-border-dark:#333;--font-family:"Helvetica Neue", Helvetica, Arial, "Microsoft YaHei", sans-serif;--spacing-xs:8px;--spacing-sm:16px;--spacing-md:32px;--spacing-lg:48px;--spacing-xl:60px;--spacing-xxl:80px;--container-max:1120px;--radius:0}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);color:var(--color-near-black);background:var(--color-white);line-height:1.3}a{color:inherit;text-decoration:none}.container{max-width:var(--container-max);padding:0 var(--spacing-md);width:100%;margin:0 auto}.nav{z-index:100;background:var(--color-nav-bg);border-bottom:1px solid #ffffff0f;position:sticky;top:0}.nav-inner{max-width:var(--container-max);padding:0 var(--spacing-md);justify-content:space-between;align-items:center;height:64px;margin:0 auto;display:flex}.nav-logo-mark{color:var(--color-white);letter-spacing:-.01em;font-size:18px;font-weight:700}.nav-links{align-items:center;gap:var(--spacing-md);display:flex}.nav-links a{color:var(--color-silver);font-size:14px;font-weight:400;transition:color .2s}.nav-links a:hover{color:var(--color-white)}.nav-cta{border:1px solid var(--color-white);padding:8px 20px;font-size:14px;font-weight:700;transition:background .2s,color .2s;color:var(--color-white)!important}.nav-cta:hover{background:var(--color-white);color:var(--color-nav-bg)!important}.hero{background:var(--color-dark-bg);padding:var(--spacing-xxl) 0 var(--spacing-xl);text-align:center}.hero-pretitle{color:var(--color-meta-gray);letter-spacing:.25em;text-transform:uppercase;margin-bottom:var(--spacing-sm);font-size:14px;font-weight:400}.hero-title{color:var(--color-white);letter-spacing:.04em;margin-bottom:var(--spacing-sm);font-size:clamp(2rem,5vw,3.5rem);font-weight:300;line-height:1.3}.hero-subtitle{color:var(--color-silver);margin-bottom:var(--spacing-sm);font-size:18px;font-weight:400}.hero-divider{background:var(--color-bmw-blue);width:60px;height:2px;margin-bottom:var(--spacing-md);display:inline-block}.hero-desc{color:var(--color-meta-gray);max-width:580px;margin:0 auto var(--spacing-md);font-size:16px;font-weight:400;line-height:1.5}.hero-actions{gap:var(--spacing-sm);flex-wrap:wrap;justify-content:center;display:flex}.btn{align-items:center;gap:var(--spacing-xs);font-family:var(--font-family);border-radius:var(--radius);cursor:pointer;text-align:center;justify-content:center;padding:16px 40px;font-size:16px;font-weight:700;transition:all .2s;display:inline-flex}.btn-primary{background:var(--color-bmw-blue);color:var(--color-white);border:none}.btn-primary:hover{background:var(--color-bmw-focus)}.btn-outline{color:var(--color-white);border:1px solid var(--color-white);background:0 0}.btn-outline:hover{background:var(--color-white);color:var(--color-dark-bg)}.btn-large{padding:18px 48px;font-size:18px}.section{padding:var(--spacing-xl) 0}.section-light{background:var(--color-white)}.section-gray{background:var(--color-light-bg)}.section-dark{background:var(--color-dark-bg);color:var(--color-white)}.section-header{text-align:center;margin-bottom:var(--spacing-lg)}.section-label{color:var(--color-bmw-blue);letter-spacing:.15em;margin-bottom:var(--spacing-sm);font-size:14px;font-weight:900;display:inline-block}.section-label--light{color:var(--color-bmw-blue)}.section-title{color:var(--color-near-black);margin-bottom:var(--spacing-xs);font-size:clamp(1.5rem,3vw,2rem);font-weight:300;line-height:1.3}.section-title--thin{font-weight:300}.section-title--light{color:var(--color-white)}.section-subtitle{color:var(--color-meta-gray);margin-bottom:var(--spacing-sm);font-size:18px;font-weight:400}.section-subtitle--light{color:var(--color-meta-gray)}.section-divider{background:var(--color-bmw-blue);width:40px;height:2px;display:inline-block}.cards{gap:var(--spacing-md);grid-template-columns:repeat(auto-fit,minmax(280px,1fr));display:grid}.card{padding:var(--spacing-md);border:1px solid var(--color-border);transition:border-color .2s,transform .2s}.card:hover{border-color:var(--color-bmw-blue);transform:translateY(-2px)}.card-icon{background:var(--color-bmw-blue);width:48px;height:48px;color:var(--color-white);margin-bottom:var(--spacing-sm);justify-content:center;align-items:center;font-size:20px;font-weight:700;display:flex}.card-title{color:var(--color-near-black);margin-bottom:var(--spacing-xs);font-size:20px;font-weight:700;line-height:1.3}.card-desc{color:var(--color-meta-gray);font-size:14px;font-weight:400;line-height:1.6}.spec-list{gap:var(--spacing-sm);flex-direction:column;max-width:720px;margin:0 auto;display:flex}.spec-item{gap:var(--spacing-sm);background:var(--color-white);padding:var(--spacing-sm);align-items:center;transition:box-shadow .2s;display:flex}.spec-item:hover{box-shadow:0 2px 12px #0000000f}.spec-icon{background:var(--color-bmw-blue);width:48px;height:48px;color:var(--color-white);flex-shrink:0;justify-content:center;align-items:center;font-size:16px;font-weight:700;display:flex}.spec-body{flex:1}.spec-title{color:var(--color-near-black);margin-bottom:4px;font-size:16px;font-weight:700}.spec-desc{color:var(--color-meta-gray);font-size:14px;font-weight:400;line-height:1.6}.feature-list{gap:var(--spacing-sm);flex-direction:column;max-width:800px;margin:0 auto;display:flex}.feature-item{gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);border:1px solid var(--color-border-dark);align-items:center;transition:border-color .2s;display:flex}.feature-item:hover{border-color:var(--color-bmw-blue)}.feature-num{background:var(--color-bmw-blue);width:56px;height:56px;color:var(--color-white);flex-shrink:0;justify-content:center;align-items:center;font-size:20px;font-weight:700;display:flex}.feature-badge{padding:var(--spacing-xs) var(--spacing-sm);background:var(--color-bmw-blue);color:var(--color-white);flex-shrink:0;font-size:16px;font-weight:700}.feature-body{flex:1}.feature-title{color:var(--color-white);margin-bottom:var(--spacing-xs);font-size:20px;font-weight:700}.feature-desc{color:var(--color-meta-gray);font-size:14px;font-weight:400;line-height:1.6}.skill-list{gap:var(--spacing-sm);flex-direction:column;max-width:800px;margin:0 auto;display:flex}.skill-item{gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);background:var(--color-light-bg);align-items:flex-start;transition:box-shadow .2s,transform .2s;display:flex}.skill-item:hover{transform:translateY(-1px);box-shadow:0 2px 12px #00000014}.skill-icon{background:var(--color-bmw-blue);flex-shrink:0;justify-content:center;align-items:center;width:64px;height:64px;display:flex}.skill-body{flex:1}.skill-title{color:var(--color-near-black);margin-bottom:var(--spacing-xs);font-size:22px;font-weight:700;line-height:1.3}.skill-desc{color:var(--color-meta-gray);font-size:14px;font-weight:400;line-height:1.6}.footer{background:var(--color-nav-bg);color:var(--color-white);padding:var(--spacing-xl) 0;text-align:center}.footer-title{color:var(--color-white);margin-bottom:var(--spacing-md);font-size:clamp(1.5rem,3vw,2rem);font-weight:300}.footer-purchase{align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-md);flex-direction:column;display:flex}.footer-label{color:var(--color-meta-gray);letter-spacing:.15em;text-transform:uppercase;font-size:14px;font-weight:900}.arrow{margin-left:var(--spacing-xs);font-size:20px}.footer-contact{gap:var(--spacing-lg);margin-bottom:var(--spacing-md);flex-wrap:wrap;justify-content:center;display:flex}.footer-contact-item{gap:var(--spacing-xs);flex-direction:column;display:flex}.footer-contact-label{color:var(--color-meta-gray);letter-spacing:.1em;text-transform:uppercase;font-size:12px;font-weight:900}.footer-contact-value{color:var(--color-white);font-size:16px;font-weight:400}.footer-divider{background:var(--color-border-dark);width:100%;max-width:600px;height:1px;margin:var(--spacing-md) auto}.footer-copy{color:var(--color-meta-gray);font-size:12px}@media (width<=768px){.nav-links a:not(.nav-cta){display:none}.hero{padding:var(--spacing-xl) 0 var(--spacing-lg)}.hero-title{font-size:2rem}.cards{grid-template-columns:1fr}.feature-item{text-align:left;flex-direction:column;align-items:flex-start}.skill-item{flex-direction:column;align-items:flex-start}.footer-contact{gap:var(--spacing-md);flex-direction:column}.btn-large{padding:14px 24px;font-size:16px}}@media (width<=480px){.container{padding:0 var(--spacing-sm)}.hero-actions{flex-direction:column;align-items:stretch}.hero-actions .btn{width:100%}.section{padding:var(--spacing-lg) 0}}