:root{--color-primary: #0175C2;--color-primary-dark: #015A9A;--color-primary-light: #E5F2FB;--color-primary-gradient: linear-gradient(135deg, #0175C2 0%, #00A3E0 100%);--color-text: #1D1D1F;--color-text-secondary: #6E6E73;--color-text-tertiary: #86868B;--color-bg: #FFFFFF;--color-bg-secondary: #F5F5F7;--color-bg-tertiary: #E8E8ED;--color-border: #D2D2D7;--color-white: #FFFFFF;--color-dark: #1D1D1F;--color-success: #00A86B;--color-warning: #FF9500;--color-error: #FF3B30;--font-sans: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Noto Sans SC", "Helvetica Neue", "Helvetica", "Arial", sans-serif;--font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--text-4xl: 2.5rem;--text-5xl: 3.25rem;--text-6xl: 4.5rem;--text-7xl: 5.5rem;--weight-regular: 400;--weight-medium: 500;--weight-semibold: 600;--weight-bold: 700;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--space-32: 8rem;--space-40: 10rem;--max-width: 1200px;--max-width-wide: 1440px;--header-height: 64px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 60px rgba(0, 0, 0, .12);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--transition-fast: .2s ease;--transition-base: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .6s cubic-bezier(.4, 0, .2, 1);--transition-spring: .6s cubic-bezier(.34, 1.56, .64, 1);--z-header: 100;--z-overlay: 200;--z-modal: 300}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer;border:none;background:none}a{color:inherit;text-decoration:none}ul,ol{list-style:none}h1,h2,h3,h4,h5,h6,p{overflow-wrap:break-word}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:var(--radius-sm)}body{font-family:var(--font-sans);font-size:var(--text-base);font-weight:var(--weight-regular);color:var(--color-text);line-height:1.6}h1{font-size:var(--text-4xl);font-weight:var(--weight-bold);line-height:1.1;letter-spacing:-.03em}h2{font-size:var(--text-3xl);font-weight:var(--weight-semibold);line-height:1.15;letter-spacing:-.02em}h3{font-size:var(--text-2xl);font-weight:var(--weight-semibold);line-height:1.2;letter-spacing:-.01em}h4{font-size:var(--text-xl);font-weight:var(--weight-semibold);line-height:1.25}h5{font-size:var(--text-lg);font-weight:var(--weight-medium);line-height:1.3}h6{font-size:var(--text-base);font-weight:var(--weight-medium);line-height:1.4}@media (max-width: 768px){h1{font-size:var(--text-3xl)}h2{font-size:var(--text-2xl)}h3{font-size:var(--text-xl)}h4{font-size:var(--text-lg)}}.lead{font-size:var(--text-lg);color:var(--color-text-secondary);line-height:1.7}.small{font-size:var(--text-sm);color:var(--color-text-tertiary)}.text-gradient{background:var(--color-primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-6)}@media (max-width: 768px){.container{padding:0 var(--space-4)}}.section{padding:var(--space-24) 0}.section-sm{padding:var(--space-12) 0}@media (max-width: 768px){.section{padding:var(--space-16) 0}.section-sm{padding:var(--space-8) 0}}.grid-2,.grid-3,.grid-4{display:grid;gap:var(--space-8)}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}@media (min-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}@media (max-width: 767px){.grid-2,.grid-3,.grid-4{gap:var(--space-6)}}.text-center{text-align:center}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border-radius:var(--radius-full);font-size:var(--text-base);font-weight:var(--weight-medium);line-height:1;transition:all var(--transition-base);white-space:nowrap}.btn-primary{background:var(--color-primary);color:var(--color-white);border:2px solid var(--color-primary)}.btn-primary:hover{background:var(--color-primary-dark);border-color:var(--color-primary-dark);transform:scale(1.02)}.btn-secondary{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-secondary:hover{background:var(--color-primary-light);transform:scale(1.02)}.btn-outline{background:transparent;color:var(--color-text);border:2px solid var(--color-border)}.btn-outline:hover{border-color:var(--color-text);transform:scale(1.02)}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm)}.link-arrow{display:inline-flex;align-items:center;gap:var(--space-1);color:var(--color-primary);font-weight:var(--weight-medium);transition:gap var(--transition-fast)}.link-arrow:hover{gap:var(--space-2)}.link-arrow:after{content:"→";transition:transform var(--transition-fast)}.link-arrow:hover:after{transform:translate(2px)}.section-title{text-align:center;margin-bottom:var(--space-16)}.section-title h2{margin-bottom:var(--space-4)}.section-title p{max-width:600px;margin:0 auto;color:var(--color-text-secondary);font-size:var(--text-lg)}@media (max-width: 768px){.section-title{margin-bottom:var(--space-10)}}img{border-radius:var(--radius-md)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.animate-on-scroll{opacity:1;transform:none;transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}.js-enabled .animate-on-scroll{opacity:0;transform:translateY(30px)}.js-enabled .animate-on-scroll.visible{opacity:1;transform:translateY(0)}.header{transition:background-color .3s ease,box-shadow .3s ease,backdrop-filter .3s ease}.header.scrolled{background:#ffffffeb;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 1px #0000000f}.mobile-menu{display:none;position:fixed;inset:0;z-index:var(--z-overlay);pointer-events:none}.mobile-menu.open{display:block;pointer-events:all}.mobile-menu__item{opacity:0;transform:translateY(20px);transition:all .4s cubic-bezier(.4,0,.2,1);transition-delay:var(--delay, 0s)}.mobile-menu.open .mobile-menu__item{opacity:1;transform:translateY(0)}.mobile-menu__cta{margin-top:var(--space-8);opacity:0;transition:opacity .4s ease;transition-delay:.3s}.mobile-menu.open .mobile-menu__cta{opacity:1}