:root{--color-primary:#4a90d9;--color-primary-dark:#2b6cb0;--color-primary-light:#7fb3e8;--color-accent-orange:#e87e34;--color-accent-dark-blue-gray:#1a365d;--color-bg-primary:#fff;--color-bg-secondary:#f5f7fa;--color-bg-dark:#1a2332;--color-text-primary:#1a2332;--color-text-secondary:#4a5568;--color-text-tertiary:#718096;--color-text-inverse:#fff;--color-border:#e2e8f0;--color-border-light:#edf2f7;--color-success:#48bb78;--color-warning:#ecc94b;--color-error:#f56565;--color-info:#4299e1;--header-height:64px;--header-height-expanded:80px;--header-bg-opacity-idle:0;--header-bg-opacity-scrolled:1;--header-bg-idle:rgb(255 255 255/var(--header-bg-opacity-idle));--header-bg-scrolled:rgb(255 255 255/var(--header-bg-opacity-scrolled));--header-transition:.4s ease;--header-offset:var(--header-height-expanded);--font-family-base:var(--font-inter), "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;--font-family-mono:var(--font-mono), "Fira Code", "Consolas", monospace;--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--text-4xl:2.25rem;--text-5xl:3rem;--font-normal:400;--font-medium:500;--font-semibold:600;--font-bold:700;--spacing-1:.25rem;--spacing-2:.5rem;--spacing-3:.75rem;--spacing-4:1rem;--spacing-5:1.25rem;--spacing-6:1.5rem;--spacing-7:1.75rem;--spacing-8:2rem;--spacing-10:2.5rem;--spacing-12:3rem;--spacing-16:4rem;--spacing-20:5rem;--spacing-24:6rem;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--radius-xl:12px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a;--transition-fast:.15s ease;--transition-normal:.3s ease;--transition-slow:.5s ease;--container-max:1200px}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:var(--header-offset);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-family-base);color:var(--color-text-primary);background-color:var(--color-bg-primary);margin:0;padding:0;line-height:1.6}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-dark)}img{max-width:100%;height:auto}.container{max-width:var(--container-max);padding-left:var(--spacing-6);padding-right:var(--spacing-6);margin-left:auto;margin-right:auto}.section{padding-top:var(--spacing-16);padding-bottom:var(--spacing-16)}main>.section:nth-child(odd){background-color:var(--color-bg-primary)}main>.section:nth-child(2n){background-color:var(--color-bg-secondary)}.section--dark{text-align:center;padding-top:var(--spacing-12);padding-bottom:var(--spacing-12);color:var(--color-text-inverse);position:relative;overflow:hidden;background:radial-gradient(60% 50% at 20%,#4a90d914 0%,#0000 70%),radial-gradient(50% 40% at 80% 40%,#4a90d90d 0%,#0000 60%),linear-gradient(135deg,#3c78bc 0%,#296093 50%,#3879c4 100%)!important}.section--dark:before{content:"";pointer-events:none;background-image:radial-gradient(#5a96d58c 1px,#0000 1px);background-size:24px 24px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(70% 70%,#000 20%,#0000 70%);mask-image:radial-gradient(70% 70%,#000 20%,#0000 70%)}.section--dark:after{content:"";background:linear-gradient(90deg, transparent 0%, var(--color-primary) 30%, var(--color-primary-light) 50%, var(--color-primary) 70%, transparent 100%);opacity:.5;pointer-events:none;height:2px;position:absolute;bottom:0;left:0;right:0}.section--dark .container{z-index:1;position:relative}.section--accent{background:0 0!important}.page-hero-title{font-size:var(--text-4xl);letter-spacing:-.01em;text-shadow:0 2px 20px #4a90d933;margin:0;font-weight:700}.page-hero-title:after{content:"";background:linear-gradient(90deg, var(--color-primary), var(--color-primary-light));width:56px;height:3px;margin:var(--spacing-4) auto 0;border-radius:2px;display:block}.page-hero-subtitle{font-size:var(--text-lg);color:#fffc;margin-top:var(--spacing-4);max-width:600px;margin-left:auto;margin-right:auto}.page-hero-subtitle:empty{display:none}@media (max-width:768px){.page-hero-title{font-size:var(--text-3xl)}.page-hero-title:after{width:40px;height:2px;margin-top:var(--spacing-3)}.page-hero-subtitle{font-size:var(--text-base)}.section--dark:before{background-size:32px 32px}.section--dark,.section{padding-top:var(--spacing-10);padding-bottom:var(--spacing-10)}}@media (max-width:480px){.page-hero-title{font-size:var(--text-2xl)}}.cta-section{text-align:center}.cta-title{font-size:var(--text-3xl);margin-bottom:var(--spacing-4);font-weight:700}.cta-desc{font-size:var(--text-lg);color:#ffffffb3;max-width:600px;margin:0 auto var(--spacing-8)}