:root{--bg:#fafafa;--bg-elevated:#fff;--text:#1a1a1a;--text-secondary:#666;--text-tertiary:#999;--accent:#06f;--accent-hover:#0052cc;--border:#e5e5e5;--border-strong:#d0d0d0;--code-bg:#f5f5f5;--tag-bg:#f0f0f0;--success:#16a34a;--error:#dc2626;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--space-xs:.25rem;--space-sm:.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:3rem;--space-2xl:5rem;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--max-width:960px;--max-width-narrow:640px}@media (prefers-color-scheme:dark){:root{--bg:#0a0a0a;--bg-elevated:#141414;--text:#e5e5e5;--text-secondary:#a0a0a0;--text-tertiary:#666;--accent:#4d94ff;--accent-hover:#6ba5ff;--border:#262626;--border-strong:#333;--code-bg:#1a1a1a;--tag-bg:#1f1f1f}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background-color:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.7}::selection{background:var(--accent);color:#fff}h1,h2,h3,h4,h5{letter-spacing:-.02em;font-weight:600;line-height:1.3}h1{font-size:2.5rem}h2{font-size:1.75rem}h3{font-size:1.25rem}h4{font-size:1.05rem}p{color:var(--text-secondary)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:var(--max-width);padding:0 var(--space-lg);margin:0 auto}.container--narrow{max-width:var(--max-width-narrow)}.site-header{padding:var(--space-lg) 0;border-bottom:1px solid var(--border);background:var(--bg);z-index:100;position:sticky;top:0}.header-container{justify-content:space-between;align-items:center;display:flex}.logo{letter-spacing:-.03em;align-items:center;gap:var(--space-sm);font-size:1.125rem;font-weight:700;display:flex}.logo a{color:var(--text);text-decoration:none}.nav-links{align-items:center;gap:var(--space-xl);list-style:none;display:flex}.nav-links a{color:var(--text-secondary);font-size:.9rem;font-weight:500;text-decoration:none;transition:color .15s}.nav-links a:hover{color:var(--text);text-decoration:none}.nav-link--cta{border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:.4rem 1rem;color:var(--text)!important;font-size:.85rem!important;transition:all .15s!important}.nav-link--cta:hover{background:var(--text);color:var(--bg)!important;border-color:var(--text)!important}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;gap:6px;padding:.65rem 1.5rem;font-family:inherit;font-size:.9rem;font-weight:500;text-decoration:none;transition:all .15s;display:inline-flex}.btn-primary{background:var(--text);color:var(--bg)}.btn-primary:hover{opacity:.85}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{color:var(--text);border:1px solid var(--border-strong);background:0 0}.btn-secondary:hover{background:var(--tag-bg)}.btn-ghost{color:var(--text-secondary);background:0 0;border:none;padding:.4rem .8rem}.btn-ghost:hover{color:var(--text)}.hero{padding:var(--space-2xl) 0 var(--space-xl);border-bottom:1px solid var(--border)}.hero-eyebrow{text-transform:uppercase;letter-spacing:.1em;color:var(--text-tertiary);margin-bottom:var(--space-md);font-size:.8rem;font-weight:500}.hero h1{margin-bottom:var(--space-lg);max-width:700px}.hero p{max-width:600px;margin-bottom:var(--space-xl);font-size:1.1rem;line-height:1.8}.hero-actions{gap:var(--space-md);flex-wrap:wrap;display:flex}.section{padding:var(--space-2xl) 0;border-bottom:1px solid var(--border)}.section:last-of-type{border-bottom:none}.section-label{text-transform:uppercase;letter-spacing:.12em;color:var(--text-tertiary);margin-bottom:var(--space-sm);font-size:.75rem;font-weight:600}.section h2{margin-bottom:var(--space-sm)}.section>.container>p{margin-bottom:var(--space-xl)}.tag{text-transform:uppercase;letter-spacing:.08em;border-radius:var(--radius-sm);background:var(--tag-bg);color:var(--text-secondary);border:1px solid var(--border);padding:.2rem .6rem;font-size:.7rem;font-weight:600;display:inline-block}.tag--live{color:#166534;background:#dcfce7;border-color:#bbf7d0}@media (prefers-color-scheme:dark){.tag--live{color:#4ade80;background:#16a34a26;border-color:#16a34a4d}}.card{padding:var(--space-xl);border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);transition:border-color .15s}.card:hover{border-color:var(--border-strong)}.card h3{margin-bottom:var(--space-sm)}.card p{font-size:.95rem;line-height:1.7}.card-tags{gap:var(--space-sm);margin-bottom:var(--space-lg);display:flex}.grid{gap:var(--space-lg);display:grid}.grid-2{grid-template-columns:1fr 1fr}.grid-2>*,.grid-3>*{min-width:0}.grid-3{grid-template-columns:1fr 1fr 1fr}.principles{gap:var(--space-lg);margin-top:var(--space-xl);grid-template-columns:1fr 1fr 1fr;display:grid}.principle{padding:var(--space-lg);border-left:2px solid var(--border)}.principle h4{margin-bottom:var(--space-sm)}.principle p{font-size:.9rem;line-height:1.7}.code-block{font-family:var(--font-mono);background:var(--code-bg);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-lg);white-space:pre;font-size:.85rem;line-height:1.6;overflow-x:auto}.input-field{border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);padding:.75rem 1rem;font-family:inherit;font-size:.95rem;transition:border-color .15s}.input-field:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #0066ff1a}textarea.input-field{resize:vertical;min-height:120px}.site-footer{padding:var(--space-lg) 0;border-top:1px solid var(--border);color:var(--text-tertiary);font-size:.8rem}.footer-inner{justify-content:space-between;align-items:center;display:flex}.footer-links{gap:var(--space-lg);display:flex}.footer-links a{color:var(--text-tertiary);font-size:.8rem;text-decoration:none}.footer-links a:hover{color:var(--text)}.page{padding-top:var(--space-xl);min-height:calc(100vh - 140px)}.page-header{margin-bottom:var(--space-xl);padding-bottom:var(--space-lg);border-bottom:1px solid var(--border);justify-content:space-between;align-items:baseline;display:flex}.page-header h1{font-size:1.5rem}.sidebar-layout{gap:var(--space-xl);grid-template-columns:180px 1fr;display:grid}.sidebar-nav{flex-direction:column;gap:2px;display:flex}.sidebar-link{color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;text-align:left;background:0 0;border:none;padding:.5rem .75rem;font-family:inherit;font-size:.9rem;text-decoration:none;transition:all .1s;display:block}.sidebar-link:hover{color:var(--text);background:var(--tag-bg)}.sidebar-link--active{color:var(--text);background:var(--tag-bg);font-weight:600}.key-display{align-items:center;gap:var(--space-md);background:var(--code-bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.75rem 1rem;display:flex}.key-display code{font-family:var(--font-mono);color:var(--text);flex:1;font-size:.85rem}.auth-page{justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{width:100%;max-width:380px;padding:var(--space-xl);border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated)}.auth-card h2{margin-bottom:var(--space-xl);text-align:center}.auth-form{gap:var(--space-md);flex-direction:column;display:flex}.msg-error{color:var(--error);margin-top:var(--space-md);font-size:.85rem}.msg-success{color:var(--success);margin-top:var(--space-md);font-size:.85rem}.sr-only{clip:rect(0, 0, 0, 0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.text-secondary{color:var(--text-secondary)}.text-center{text-align:center}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mt-xl{margin-top:var(--space-xl)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.hamburger-btn{color:var(--text);cursor:pointer;padding:var(--space-sm);background:0 0;border:none;font-size:1.5rem;display:none}@media (width<=640px){h1{font-size:2rem}.hamburger-btn{display:block}.main-nav{background:var(--bg-elevated);border-left:1px solid var(--border);z-index:200;width:250px;height:100vh;padding-top:4rem;transition:right .2s;position:fixed;top:0;right:-100%}.main-nav.open{right:0}.nav-links{gap:var(--space-lg);padding:0 var(--space-lg);flex-direction:column;align-items:flex-start}.grid-2,.grid-3,.principles,.sidebar-layout{grid-template-columns:1fr}.hero h1{font-size:2rem}.hero p{font-size:1rem}.footer-inner{gap:var(--space-md);text-align:center;flex-direction:column}}@media (prefers-reduced-motion:no-preference){@supports (animation-timeline:view()) and (animation-range:entry){@keyframes fade-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.reveal{animation:both fade-up;animation-timeline:view();animation-range:entry 10% cover 20%}}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{border:2px solid var(--border);border-top-color:var(--text);border-radius:50%;width:18px;height:18px;animation:.6s linear infinite spin;display:inline-block}@media (width<=800px){.api-layout{flex-direction:column!important;overflow-y:auto!important}.api-sidebar{border-bottom:1px solid var(--border);border-right:none!important;width:100%!important;height:auto!important;padding:1.5rem 1rem!important;position:static!important}.api-main{padding:1.5rem 1rem!important;overflow-y:visible!important}}.kaggle-header{justify-content:space-between;align-items:center;margin-bottom:1.5rem;display:flex}.kaggle-header-title{color:var(--text);margin:0;font-size:1.75rem;font-weight:700}.kaggle-header-actions{gap:1rem;display:flex}.kaggle-btn-outline{border:1px solid var(--border-strong);color:var(--text);cursor:pointer;background:0 0;border-radius:20px;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:600;transition:all .2s;display:flex}.kaggle-btn-outline:hover{background:var(--tag-bg)}.kaggle-search-container{align-items:center;gap:1rem;margin-bottom:2rem;display:flex}.kaggle-search-box{border:1px solid var(--border-strong);background:0 0;border-radius:24px;flex-grow:1;align-items:center;padding:.5rem 1rem;display:flex}.kaggle-search-box input{color:var(--text);background:0 0;border:none;outline:none;flex-grow:1;margin-left:.5rem;font-size:.9rem}.kaggle-search-box input::placeholder{color:var(--text-tertiary)}.kaggle-filter-btn{border:1px solid var(--border-strong);color:var(--text);cursor:pointer;background:0 0;border-radius:20px;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:600;display:flex}.kaggle-tabs{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.kaggle-tabs-list{gap:1.5rem;display:flex}.kaggle-tab{color:var(--text-secondary);cursor:pointer;border-bottom:2px solid #0000;padding:.75rem 0;font-size:.9rem;font-weight:600}.kaggle-tab.active{color:var(--text);border-bottom-color:var(--text)}.kaggle-sort-dropdown{color:var(--text-secondary);cursor:pointer;align-items:center;gap:.25rem;font-size:.85rem;display:flex}.kaggle-subheader{color:var(--text-tertiary);margin:1.5rem 0 .5rem;font-size:.8rem;font-weight:500}.kaggle-row{border-bottom:1px solid var(--border);cursor:pointer;align-items:center;padding:1.25rem 0;transition:background .2s;display:flex}.kaggle-row:hover{background:#00000005}@media (prefers-color-scheme:dark){.kaggle-row:hover{background:#ffffff05}}.kaggle-avatar{background:var(--tag-bg);width:40px;height:40px;color:var(--text);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-right:1rem;font-weight:600;display:flex}.kaggle-row-content{flex-grow:1;min-width:0}.kaggle-row-title{color:var(--text);white-space:nowrap;text-overflow:ellipsis;margin-bottom:.25rem;font-size:.95rem;font-weight:700;overflow:hidden}.kaggle-row-meta{color:var(--text-tertiary);font-size:.75rem}.kaggle-row-actions{flex-shrink:0;align-items:center;gap:1.5rem;margin-left:1rem;display:flex}.kaggle-vote-btn{border:1px solid var(--border-strong);color:var(--text-secondary);border-radius:20px;align-items:center;gap:.5rem;padding:.25rem .75rem;font-size:.8rem;font-weight:600;display:flex}.kaggle-comments-count{color:var(--text-secondary);white-space:nowrap;font-size:.8rem}.kaggle-ellipsis{color:var(--text-tertiary);cursor:pointer}.kaggle-thread-container{background:var(--bg-elevated);border:1px solid var(--border);border-radius:8px;padding:2rem}.kaggle-back-btn{color:var(--text-secondary);cursor:pointer;align-items:center;gap:.5rem;margin-bottom:1.5rem;font-size:.9rem;font-weight:500;display:inline-flex}.kaggle-back-btn:hover{color:var(--text)}