.footer{background-color:var(--color-surface);border-top:1px solid var(--color-border-light);padding:var(--spacing-2xl) var(--spacing-md);margin-top:var(--spacing-2xl)}.footer-content{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:var(--spacing-xl);gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.footer-section-title{font-weight:var(--font-weight-bold);color:var(--color-text-primary);margin-bottom:var(--spacing-md);font-size:var(--font-size-base)}.footer-links{list-style:none;display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-link{color:var(--color-text-secondary);text-decoration:none;transition:color var(--transition-fast);font-size:var(--font-size-sm)}.footer-link:hover{color:var(--color-primary)}.footer-bottom{border-top:1px solid var(--color-border-light);padding-top:var(--spacing-lg);display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);text-align:center;font-size:var(--font-size-sm);color:var(--color-text-light)}.footer-bottom-links{display:flex;gap:var(--spacing-lg);justify-content:center}.footer-bottom-link{color:var(--color-text-light);text-decoration:none;transition:color var(--transition-fast)}.footer-bottom-link:hover{color:var(--color-primary)}@media (max-width:640px){.footer-content{grid-template-columns:1fr}.footer-bottom,.footer-bottom-links{flex-direction:column}.footer-bottom-links{gap:var(--spacing-md)}}.header{background-color:var(--color-surface);border-bottom:1px solid var(--color-border-light);position:-webkit-sticky;position:sticky;top:0;z-index:100}.header-content{max-width:min(1280px,95vw);margin:0 auto;padding:clamp(.75rem,2vw,1rem) clamp(1rem,3vw,1.5rem);display:flex;align-items:center;justify-content:space-between;gap:clamp(.5rem,2vw,1.5rem)}@media (max-width:480px){.header-content{padding:.75rem 1rem}}.header-logo{display:flex;align-items:center;gap:var(--spacing-sm);text-decoration:none;color:var(--color-text-primary);font-weight:var(--font-weight-bold);font-size:var(--font-size-lg);transition:color var(--transition-fast)}.header-logo:hover{color:var(--color-primary)}.header-logo-icon{font-size:1.5rem}.header-nav{display:flex;align-items:center;gap:var(--spacing-lg);flex:1 1}.nav-link{color:var(--color-text-secondary);text-decoration:none;font-weight:var(--font-weight-medium);transition:color var(--transition-fast);cursor:pointer;padding:clamp(.375rem,1.5vw,.5rem) clamp(.75rem,2.5vw,1rem);border-radius:var(--radius-md);font-size:clamp(.875rem,1.5vw,1rem)}.nav-link.active,.nav-link:hover{color:var(--color-primary)}.nav-link.active{background-color:#e0f2f1}.mobile-menu-toggle{display:none;background:none;border:none;font-size:var(--font-size-xl);cursor:pointer;color:var(--color-text-primary);padding:var(--spacing-sm)}@media (max-width:768px){.mobile-menu-toggle{display:block}.header-nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background-color:var(--color-surface);border-bottom:1px solid var(--color-border-light);padding:var(--spacing-lg);gap:var(--spacing-md)}.header-nav.open{display:flex}.nav-link{width:100%;padding:var(--spacing-md)}}.search-bar{flex:1 1;max-width:clamp(200px,40vw,400px);display:flex;align-items:center;background-color:var(--color-surface-light);border:1px solid var(--color-border-light);border-radius:var(--radius-md);padding:clamp(.375rem,1vw,.5rem) clamp(.75rem,2vw,1rem);transition:all var(--transition-fast);position:relative}.search-bar:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(45,122,95,.1)}.search-bar input{flex:1 1;border:none;background:none;font-size:var(--font-size-base);color:var(--color-text-primary);outline:none}.search-bar input::placeholder{color:var(--color-text-light)}.search-btn{background:none;border:none;font-size:1.125rem;cursor:pointer;padding:.25rem;display:flex;align-items:center;justify-content:center;color:var(--color-primary);transition:transform var(--transition-fast)}.search-btn:hover{transform:scale(1.1)}@media (max-width:768px){.search-bar{display:none}}.header-actions{gap:var(--spacing-md)}.header-actions,.theme-toggle{display:flex;align-items:center}.theme-toggle{background:var(--color-surface-light);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);font-size:1.25rem;cursor:pointer;transition:all var(--transition-fast);justify-content:center;min-width:2.5rem;height:2.5rem}.theme-toggle:hover{background-color:var(--color-primary);border-color:var(--color-primary);transform:scale(1.05)}[data-theme=dark] .theme-toggle{background:var(--color-surface);border-color:var(--color-border)}.login-btn{padding:var(--spacing-sm) var(--spacing-lg);background-color:var(--color-primary);color:white!important;border:none;border-radius:var(--radius-md);font-weight:var(--font-weight-semibold);cursor:pointer;transition:all var(--transition-fast);display:inline-flex;align-items:center;box-shadow:0 2px 4px rgba(45,122,95,.2)}.login-btn,.login-btn:hover{text-decoration:none!important}.login-btn:hover{background-color:var(--color-primary-dark);transform:translateY(-1px);box-shadow:0 4px 8px rgba(45,122,95,.3)}@media (max-width:640px){.header-content{padding:var(--spacing-sm) var(--spacing-md)}.header-buttons{gap:var(--spacing-sm)}.login-btn{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--font-size-sm)}}:root{--color-primary:#0066cc;--color-primary-light:#3385d6;--color-primary-dark:#004a99;--color-secondary-orange:#d97b3e;--color-secondary-blue:#4a7ba7;--color-accent-yellow:#f5a623;--color-accent-purple:#7c5fb3;--color-background:#f8f9fa;--color-surface:#ffffff;--color-surface-light:#f5f7fa;--color-text-primary:#1a202c;--color-text-secondary:#4a5568;--color-text-light:#718096;--color-border:#e2e8f0;--color-border-light:#edf2f7;--color-success:#48bb78;--color-warning:#ed8936;--color-error:#f56565;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--font-family-base:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:1.875rem;--font-size-4xl:2.25rem;--font-weight-light:300;--font-weight-normal:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--line-height-tight:1.2;--line-height-normal:1.5;--line-height-relaxed:1.75;--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-full:9999px;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.1);--transition-fast:150ms ease;--transition-medium:250ms ease;--transition-base:300ms ease;--transition-slow:500ms ease}[data-theme=dark]{--color-background:#0f1419;--color-surface:#1a1f26;--color-surface-light:#242b35;--color-text-primary:#e8eaed;--color-text-secondary:#b8bdc3;--color-text-light:#8a9199;--color-border:#2d3642;--color-border-light:#232a35;--color-primary:#3b9eff;--color-primary-light:#5db0ff;--color-primary-dark:#2080e6;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.3);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.4);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.5);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.6)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text-primary);background-color:var(--color-background)}main{min-height:100vh}.container{width:100%;max-width:min(1280px,95vw);margin:0 auto;padding:0 clamp(1rem,3vw,2rem)}.container-wide{width:100%;max-width:min(1440px,98vw);margin:0 auto;padding:0 clamp(1rem,2.5vw,1.5rem)}@media (max-width:480px){.container{max-width:100%;padding:0 1rem}}@media (min-width:481px) and (max-width:768px){.container{max-width:95%;padding:0 1.5rem}}@media (min-width:769px) and (max-width:1024px){.container{max-width:90%;padding:0 2rem}}@media (min-width:1440px){.container{max-width:1280px}.container-wide{max-width:1440px}}.grid{display:grid;grid-gap:var(--spacing-md);gap:var(--spacing-md)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}@media (min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}.flex{display:flex}.flex-col{flex-direction:column}.flex-between{justify-content:space-between}.flex-between,.flex-center{display:flex;align-items:center}.flex-center{justify-content:center}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.p-sm{padding:var(--spacing-sm)}.p-md{padding:var(--spacing-md)}.p-lg{padding:var(--spacing-lg)}.p-xl{padding:var(--spacing-xl)}.m-sm{margin:var(--spacing-sm)}.m-md{margin:var(--spacing-md)}.m-lg{margin:var(--spacing-lg)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}