:root{--background: #ffffff;--foreground: #000000;--primary: #635bff;--primary-hover: #5851df;--accent-wee: #1A05A2;--accent-little: #8F0177;--accent-big: #DE1A58;--accent-sky: #F67D31;--card-bg: #ffffff;--sidebar-bg: #f7f9fc;--border: #e6ebf1;--text-muted: #000000;--radius: 8px;--shadow: 0 7px 14px 0 rgba(60,66,87, .1), 0 3px 6px 0 rgba(0,0,0, .07);--shadow-hover: 0 15px 35px 0 rgba(60,66,87, .1), 0 5px 15px 0 rgba(0,0,0, .07)}*{box-sizing:border-box;padding:0;margin:0}html,body{max-width:100vw;overflow-x:hidden;font-family:Atkinson Hyperlegible,sans-serif;background:var(--background);color:var(--foreground);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:color .15s ease}.container{display:flex;flex-direction:row;max-width:1080px;margin:0 auto;padding:4rem 1.5rem;gap:4rem}.main-content{flex:1;min-width:0}.sidebar{width:260px;flex-shrink:0}@media (max-width: 850px){.container{flex-direction:column;padding:2rem 1.5rem}.sidebar{width:100%;margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border)}}.card{background:var(--card-bg);border-radius:var(--radius);padding:2.5rem;margin-bottom:2rem;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.title{margin:0 0 2rem;color:var(--foreground);font-size:2.25rem;line-height:1.2}.story{margin-bottom:2.5rem;font-size:1.125rem;color:var(--foreground);line-height:1.6}.level-row,.level-box{padding:0 0 .5rem 1.5rem;border-left:2px solid var(--border);transition:border-color .2s ease;margin-bottom:1.5rem}.level-row:hover,.level-box:hover{border-left-color:var(--primary)}.level-header h3,.level-box h3{margin:0 0 .5rem;font-size:1rem;text-transform:uppercase;letter-spacing:.025em;font-weight:700}.question,.level-desc{margin:0;font-size:1.0625rem;color:var(--foreground)}h1,h2,h3{font-weight:400;letter-spacing:-.01em}p{line-height:1.6;margin-bottom:1.25rem;color:var(--foreground)}.sidebar-link{display:block;padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:.5rem;transition:background .1s ease}.sidebar-link:hover{background:var(--sidebar-bg);color:var(--primary);font-weight:700}.navbar.svelte-1rtm48w{height:64px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;position:sticky;top:0;z-index:100}.nav-content.svelte-1rtm48w{max-width:1080px;width:100%;margin:0 auto;padding:0 1.5rem;display:flex;justify-content:space-between;align-items:center}.brand.svelte-1rtm48w{display:flex;align-items:center;gap:.75rem;color:var(--foreground);font-weight:400;font-size:1.125rem}.logo.svelte-1rtm48w{font-size:1.5rem}.nav-links.svelte-1rtm48w{display:flex;gap:2rem}.nav-link.svelte-1rtm48w{font-size:.9375rem;font-weight:400;color:var(--foreground)}.nav-link.svelte-1rtm48w:hover{color:var(--foreground);text-decoration:underline}.sidebar-title.svelte-1rtm48w{font-size:.8125rem;text-transform:uppercase;letter-spacing:.05em;color:var(--foreground);margin-bottom:1.5rem;font-weight:400}.sidebar-list.svelte-1rtm48w{list-style:none;padding:0}.sidebar-date.svelte-1rtm48w{display:block;font-size:.75rem;color:var(--text-muted);font-weight:400;margin-bottom:.125rem}.sidebar-problem-title.svelte-1rtm48w{font-weight:400;font-size:.9375rem;color:var(--foreground)}.footer.svelte-1rtm48w{padding:4rem 1.5rem;background:var(--sidebar-bg);border-top:1px solid var(--border);margin-top:4rem}.footer-content.svelte-1rtm48w{max-width:1080px;margin:0 auto}.footer-brand.svelte-1rtm48w{font-weight:400;color:var(--foreground);margin-bottom:1rem}