:root{color-scheme:light;--color-bg: #f5f7fb;--color-surface: #ffffff;--color-text: #1f2933;--color-muted: #52606d;--color-border: #d7deec;--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-accent: #dc2626;--color-accent-dark: #b91c1c;--shadow-soft: 0 1.5rem 3rem rgba(15, 23, 42, .08);--radius-sm: .4rem;--radius-md: .75rem;--radius-lg: 1.25rem;--transition: .22s ease;--color-card-base: rgba(255, 255, 255, .92);--color-card-highlight: rgba(248, 250, 255, .92);--color-card-border: rgba(148, 163, 184, .25)}[data-theme=dark]{color-scheme:dark;--color-bg: #0f172a;--color-surface: #111c34;--color-text: #f1f5f9;--color-muted: #c7d2fe;--color-border: #1f2a44;--color-primary: #60a5fa;--color-primary-dark: #3b82f6;--color-accent: #f87171;--color-accent-dark: #ef4444;--shadow-soft: 0 1.5rem 3rem rgba(8, 15, 32, .45);--color-card-base: rgba(46, 60, 92, .92);--color-card-highlight: rgba(25, 35, 58, .92);--color-card-border: rgba(99, 102, 241, .45)}*,*:before,*:after{box-sizing:border-box}html,body{min-height:100%}body{margin:0;font-family:Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.65;transition:background var(--transition),color var(--transition);display:flex;flex-direction:column}main{flex:1 0 auto;padding:clamp(2rem,3vw,3rem) 1.5rem 4rem}a{color:var(--color-primary);text-decoration:none}a:hover,a:focus-visible{color:var(--color-primary-dark)}button{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--color-primary);outline-offset:3px}img{display:block;max-width:100%;height:auto}.skip-link{position:absolute;top:-4rem;left:1rem;padding:.6rem 1rem;border-radius:var(--radius-sm);background:var(--color-primary);color:#fff;font-weight:600;transition:top var(--transition);z-index:1000}.skip-link:focus-visible{top:1rem}header{background:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:0 .35rem 1.5rem #0f172a0f;transition:background var(--transition),border-color var(--transition),color var(--transition)}.navbar{position:relative;display:flex;align-items:center;justify-content:space-between;gap:1rem;margin:0 auto;max-width:1100px;padding:1.15rem 1.5rem}.logo{font-weight:700;font-size:1.35rem;letter-spacing:.04em}.nav-toggle{display:none;align-items:center;justify-content:center;width:2.75rem;height:2.75rem;border:1px solid var(--color-border);border-radius:50%;background:transparent;cursor:pointer;transition:background var(--transition),border-color var(--transition)}.nav-toggle:hover,.nav-toggle:focus-visible{background:#2563eb14;border-color:var(--color-primary)}.nav-links{list-style:none;display:flex;align-items:center;gap:1.5rem;margin:0;padding:0}.nav-links a{display:inline-flex;align-items:center;padding:.35rem 0;font-weight:500;color:var(--color-text);border-bottom:2px solid transparent;transition:color var(--transition),border-color var(--transition)}.nav-links a:hover,.nav-links a:focus-visible{color:var(--color-primary);border-color:#2563eb59}.nav-links a.active,.nav-links a[aria-current=page]{color:var(--color-primary);border-color:var(--color-primary)}.nav-actions{display:flex;align-items:center;gap:.85rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.65rem 1.35rem;border-radius:999px;border:none;font-weight:600;cursor:pointer;background:var(--color-primary);color:#fff;transition:background var(--transition),transform var(--transition),box-shadow var(--transition);text-decoration:none}.btn:hover,.btn:focus-visible{background:var(--color-primary-dark);box-shadow:0 .75rem 1.5rem #2563eb40;transform:translateY(-1px)}.btn-donate{background:var(--color-accent)}.btn-donate:hover,.btn-donate:focus-visible{background:var(--color-accent-dark)}.theme-toggle{border:1px solid var(--color-border);border-radius:50%;width:2.75rem;height:2.75rem;background:transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;transition:background var(--transition),border-color var(--transition),transform var(--transition)}.theme-toggle:hover,.theme-toggle:focus-visible{border-color:var(--color-primary);background:#2563eb14;transform:rotate(-12deg)}h1{font-size:clamp(2.1rem,4vw,2.8rem);margin:0 auto clamp(1.5rem,3vw,2.5rem);max-width:1100px;padding:0 1.5rem;font-weight:700}main>section{max-width:1100px;margin:0 auto clamp(3rem,4vw,4.5rem);background:var(--color-surface);border-radius:var(--radius-lg);border:1px solid transparent;padding:clamp(1.75rem,3vw,2.75rem);box-shadow:var(--shadow-soft);transition:background var(--transition),border-color var(--transition),box-shadow var(--transition)}main>section:has(.plain-language-summary){border-color:#2563eb0f}section h2{margin-top:0;margin-bottom:1rem;font-size:clamp(1.6rem,3vw,2.2rem)}section p{margin:0 0 1.1rem;color:var(--color-muted)}#welcome{text-align:center}#welcome p{margin-bottom:1.4rem}#slideshow{position:relative;overflow:hidden;border-radius:var(--radius-lg);margin:clamp(2rem,3vw,3rem) auto 0;max-width:1100px;min-height:clamp(18rem,40vw,24rem);background:#000;padding:0;border:none}#slideshow .slide{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;transition:opacity .6s ease;object-fit:cover;width:100%;height:100%}#slideshow .slide.is-active{opacity:1}.plain-language-summary{font-weight:500;color:var(--color-text);background:#2563eb14;border-radius:var(--radius-md);padding:1rem 1.2rem;margin-bottom:1.3rem}.cta-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.75rem;margin-top:1.5rem}.cta-actions .btn{min-width:11rem}.policy-item{border-bottom:1px solid rgba(209,213,219,.35);padding-bottom:1.75rem;margin-bottom:1.75rem}.policy-item:last-of-type{border-bottom:none;margin-bottom:0;padding-bottom:0}.policy-item h3{margin:0 0 .75rem}.policy-item.collapsible h3{margin-bottom:0}.policy-item h3 button{width:100%;background:none;border:none;display:flex;align-items:center;justify-content:space-between;padding:.75rem 0;font-weight:700;font-size:1.05rem;cursor:pointer;color:var(--color-text);transition:color var(--transition)}.policy-item h3 button:hover,.policy-item h3 button:focus-visible{color:var(--color-primary)}.policy-item .toggle-icon{font-size:1.35rem;transition:transform var(--transition)}.policy-item:not(.collapsed) .toggle-icon{transform:rotate(45deg)}.policy-content{overflow:hidden;max-height:1000px;transition:max-height .4s ease,opacity .26s ease;opacity:1;padding-top:1rem}.policy-item.collapsed .policy-content{max-height:0;opacity:0;padding-top:0}.policy-content ul{margin:0 0 1.1rem 1.25rem;padding:0}.policy-content li{margin-bottom:.6rem}footer{background:var(--color-surface);border-top:1px solid var(--color-border);text-align:center;padding:1.75rem 1.5rem;font-size:.95rem;transition:background var(--transition),border-color var(--transition),color var(--transition)}#back-to-top{position:fixed;right:1.5rem;bottom:1.5rem;width:3rem;height:3rem;border-radius:50%;border:none;background:var(--color-primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:1.35rem;cursor:pointer;opacity:0;visibility:hidden;transition:opacity var(--transition),transform var(--transition),visibility var(--transition),background var(--transition);box-shadow:0 .85rem 1.65rem #2563eb4d;z-index:900}#back-to-top.visible{opacity:1;visibility:visible;transform:translateY(-.5rem)}#back-to-top:hover,#back-to-top:focus-visible{background:var(--color-primary-dark)}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;margin-top:2rem}.info-card{padding:1.5rem;border-radius:var(--radius-md);border:1px solid var(--color-card-border);background:linear-gradient(180deg,var(--color-card-base),var(--color-card-highlight));transition:transform var(--transition),border-color var(--transition),box-shadow var(--transition)}.info-card:hover,.info-card:focus-within{transform:translateY(-4px);border-color:#2563eb59;box-shadow:0 1.4rem 2.8rem #0f172a24}@media (max-width: 900px){.nav-actions{gap:.65rem}.btn{padding:.6rem 1.15rem}}@media (max-width: 768px){.navbar{align-items:flex-start}.nav-toggle{display:inline-flex}.nav-links{position:absolute;top:calc(100% + .5rem);right:1.5rem;left:1.5rem;flex-direction:column;align-items:flex-start;gap:.6rem;padding:1rem 1.25rem;border-radius:var(--radius-md);background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-soft);display:none}.navbar.is-open .nav-links{display:flex}.nav-links a{width:100%}.nav-actions{margin-left:auto}.nav-actions .btn{padding:.55rem 1.1rem}main{padding-inline:1.25rem}main>section{padding:1.5rem}}@media (max-width: 540px){#slideshow{min-height:15rem}h1{font-size:clamp(1.9rem,8vw,2.25rem)}.nav-actions{gap:.45rem}.btn-donate{padding-inline:1rem}#back-to-top{right:1rem;bottom:1rem}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}#slideshow .slide{transition:none}}.hidden{display:none!important}.calculator-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:2rem;margin:2rem 0;box-shadow:var(--shadow-soft)}.calc-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;font-size:.9rem}.form-group input{padding:.6rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:1rem}.results-area{background:#2563eb0d;padding:1.5rem;border-radius:var(--radius-md);text-align:center}.savings-highlight{font-size:1.5rem;font-weight:700;color:var(--color-primary);margin-top:.5rem}.bad{color:var(--color-accent)}.good{color:var(--color-primary)}.chart-container{margin-top:1.5rem;height:250px;position:relative}