*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #fafafa;--color-text: #1a1a2e;--color-muted: #666;--color-accent: #2563eb;--color-border: #e2e2e2;--space: 1rem;--space-lg: 2.5rem;--space-xl: 4rem;--radius: 8px}html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.6;scroll-behavior:smooth}body{min-height:100vh;display:flex;flex-direction:column}main{flex:1}img,video{max-width:100%;height:auto;display:block}a{color:var(--color-accent);text-decoration:none}a:hover{opacity:.8}h1,h2,h3{line-height:1.2;font-weight:700;margin:var(--space-lg) 0 var(--space) 0}h1{font-size:clamp(2rem,5vw,3rem)}h2{font-size:clamp(1.5rem,4vw,2rem)}h3{font-size:1.25rem}p,ul{margin:var(--space) 0;color:var(--color-muted)}p:first-child,ul:first-child{margin-top:0}.container{max-width:70rem;margin:0 auto;padding:0 var(--space-lg)}.section{padding:var(--space-xl) 0;border-top:1px solid var(--color-border)}.section:first-of-type{border-top:none;padding-top:calc(var(--space-xl) * 1.5)}.section-alt{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.section-alt *{color:inherit}.section-alt .card,.section-alt .tag,.section-alt .timeline{background:#ffffff26;border-color:#fff3}.section-alt .btn{background:#fff;color:var(--color-accent)}.section-alt .btn:hover{background:#ffffffe6}.btn{display:inline-block;padding:.75rem 1.5rem;font-weight:600;border-radius:var(--radius);cursor:pointer;background:var(--color-text);color:#fff;border:none}.btn:hover{opacity:.85}.card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-lg)}.tag{display:inline-block;padding:.25rem .75rem;font-size:.85rem;font-weight:600;border-radius:999px;background:#0000000d}.timeline{display:flex;gap:var(--space);padding:var(--space);background:#0000000d;border-radius:var(--radius);font-size:.9rem}.timeline strong{font-weight:700}.video-wrap{border-radius:var(--radius);overflow:hidden;border:1px solid var(--color-border);background:#000}.grid-2,.grid-3{display:grid;gap:var(--space-lg)}@media(min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}}.bullet-list{list-style:none;padding:0}.bullet-list li{padding-left:1.5rem;position:relative;margin:.5rem 0}.bullet-list li:before{content:"→";position:absolute;left:0;color:var(--color-accent);font-weight:700}.steps{counter-reset:step}.step{counter-increment:step;padding-left:3rem;position:relative;margin:var(--space-lg) 0}.step:before{content:counter(step);position:absolute;left:0;top:0;width:2rem;height:2rem;background:var(--color-text);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}.site-header{position:sticky;top:0;z-index:100;background:#fafafaf2;backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:4rem;position:relative}.brand{font-size:1.2rem;font-weight:800;color:var(--color-text);display:flex;gap:.5rem;align-items:baseline}.brand:hover{opacity:1}.brand-sub{font-size:.75rem;font-weight:400;color:var(--color-muted)}.header-right{display:flex;align-items:center;gap:var(--space)}.header-cta{display:none;font-size:.9rem;padding:.5rem 1rem}@media(min-width:768px){.header-cta{display:block}}.lang-toggle{display:flex;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}.lang-btn{padding:.4rem .75rem;font-size:.8rem;font-weight:600;border:none;background:transparent;color:var(--color-muted);cursor:pointer}.lang-btn.active{background:var(--color-text);color:#fff}.burger{display:flex;flex-direction:column;gap:4px;padding:.5rem;background:none;border:none;cursor:pointer}.burger-line{width:20px;height:2px;background:var(--color-text);transition:transform .2s,opacity .2s}.burger[aria-expanded=true] .burger-line:nth-child(1){transform:translateY(6px) rotate(45deg)}.burger[aria-expanded=true] .burger-line:nth-child(2){opacity:0}.burger[aria-expanded=true] .burger-line:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.burger-nav{position:absolute;top:100%;right:0;min-width:200px;background:var(--color-bg);border:1px solid var(--color-border);border-top:none;box-shadow:0 4px 12px #00000014}.burger-nav[hidden]{display:none}.burger-nav-inner{display:flex;flex-direction:column;padding:var(--space)}.burger-nav-link{padding:.75rem;color:var(--color-text)!important;text-align:right;font-weight:500}.burger-nav-link:hover{background:#0000000d;opacity:1}.site-footer{border-top:1px solid var(--color-border);padding:var(--space-lg) 0;text-align:center;color:var(--color-muted);font-size:.9rem}.footer-inner{display:flex;justify-content:center;gap:var(--space);flex-wrap:wrap}.footer-inner a{color:inherit}.footer-sep{opacity:.3}.text-center{text-align:center}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden}.kicker{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--color-accent)}