:root{--color-primary: #0066cc;--color-primary-dark: #004d99;--color-primary-light: #e6f0fa;--color-accent: #00a8cc;--color-accent-dark: #0088aa;--color-bg: #ffffff;--color-bg-alt: #f6f8fa;--color-bg-dark: #0a1628;--color-text: #1a2332;--color-text-secondary: #5a6d80;--color-text-muted: #8a9bb0;--color-border: #dce3ea;--color-border-light: #eef1f5;--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, .12);--shadow-xl: 0 20px 60px rgba(0, 0, 0, .15);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--max-width: 1280px;--nav-height: 80px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--color-text);background:var(--color-bg)}a{color:var(--color-primary);text-decoration:none;transition:color .2s ease}a:hover{color:var(--color-primary-dark)}img{max-width:100%;height:auto;display:block}h1,h2,h3,h4,h5,h6{line-height:1.2;font-weight:700;color:var(--color-text)}h1{font-size:clamp(2.5rem,5vw,3.8rem)}h2{font-size:clamp(2rem,4vw,2.8rem)}h3{font-size:clamp(1.4rem,3vw,1.8rem)}h4{font-size:1.25rem}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.section{padding:100px 0}.section-header{text-align:center;margin-bottom:60px}.section-header h2{margin-bottom:16px}.section-header p{color:var(--color-text-secondary);font-size:1.15rem;max-width:600px;margin:0 auto}.text-gradient{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all .25s ease;border:none;text-decoration:none;font-family:var(--font-sans);line-height:1.5}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;box-shadow:0 4px 15px #0066cc4d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #06c6;color:#fff}.btn-outline{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-outline:hover{background:var(--color-primary);color:#fff;transform:translateY(-2px)}.btn-lg{padding:16px 36px;font-size:1.1rem;border-radius:var(--radius-md)}.breadcrumb{display:flex;align-items:center;gap:8px;padding:16px 0;font-size:.9rem;color:var(--color-text-muted)}.breadcrumb a{color:var(--color-text-muted);transition:color .2s}.breadcrumb a:hover{color:var(--color-primary)}.breadcrumb .separator{color:var(--color-border)}.card{background:var(--color-bg);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-sm);border:1px solid var(--color-border-light);transition:all .3s ease}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:transparent}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.tag{display:inline-flex;align-items:center;padding:4px 12px;background:var(--color-primary-light);color:var(--color-primary);border-radius:20px;font-size:.82rem;font-weight:600}.fade-in{opacity:0;transform:translateY(20px);animation:fadeInUp .6s ease forwards}@keyframes fadeInUp{to{opacity:1;transform:translateY(0)}}@media(max-width:1024px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.section{padding:60px 0}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}@media(max-width:480px){.container{padding:0 16px}}