:root{--blu:#173b6d;--blu2:#2463a9;--chiaro:#f4f7fb;--bordo:#d8e1ec;--testo:#243447;--giallo:#f3b61f;--bianco:#fff;--ombra:0 8px 24px rgba(25,55,90,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--testo);background:#fff;line-height:1.68}.container{width:min(1180px,92%);margin:auto}.site-header{background:linear-gradient(135deg,#122f57,#2568b3);color:#fff;padding:28px 0}.header-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}.brand{font-size:2rem;font-weight:800;color:#fff;text-decoration:none;letter-spacing:.5px}.brand span{color:var(--giallo)}.tagline{margin:0;text-align:right}.main-nav{background:#0e2748}.nav-inner{display:flex;flex-wrap:wrap}.main-nav a{color:#fff;text-decoration:none;padding:14px 16px;display:block}.main-nav a:hover,.main-nav a:focus{background:#1c4f86}.hero{padding:56px 0;background:linear-gradient(180deg,#eef5fc,#fff)}.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:30px;align-items:center}.hero h1{font-size:clamp(2.2rem,5vw,4.5rem);line-height:1.03;margin:0 0 18px;color:var(--blu)}.hero p{font-size:1.15rem}.hero-panel{background:#102640;color:#dcecff;padding:24px;border-radius:16px;box-shadow:var(--ombra);overflow:auto}.hero-panel code{white-space:pre}.btn{display:inline-block;background:var(--blu2);color:#fff;padding:11px 17px;border-radius:8px;text-decoration:none;font-weight:700;border:0;cursor:pointer}.btn:hover,.btn:focus{background:#174b80}.btn-secondary{background:#eaf1f8;color:var(--blu)}.section{padding:42px 0}.section h1,.section h2{color:var(--blu)}.section h1{font-size:clamp(2rem,4vw,3.1rem);line-height:1.12}.section h2{font-size:1.75rem;margin-top:32px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.card{border:1px solid var(--bordo);border-radius:14px;padding:22px;background:#fff;box-shadow:var(--ombra);min-width:0}.card h3{margin-top:0;color:var(--blu)}.card a.title-link,.card h3 a{color:var(--blu);text-decoration:none}.card-clickable{cursor:pointer;transition:box-shadow .2s ease,border-color .2s ease,background-color .2s ease}.card-clickable:hover,.card-clickable:focus-visible{border-color:#2568b3;background:#f8fbff;box-shadow:0 8px 22px rgba(16,38,64,.16);outline:none}.card-clickable:focus-visible{box-shadow:0 0 0 3px rgba(37,104,179,.22),0 8px 22px rgba(16,38,64,.16)}
.badge{display:inline-block;padding:4px 9px;border-radius:999px;background:#eaf2fb;color:var(--blu);font-size:.82rem;font-weight:700}.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:32px;align-items:start}.content,.sidebar{min-width:0}.sidebar{position:sticky;top:20px}.ad-box,.ad-wide{border:2px dashed #b9c7d8;background:#f8fafc;text-align:center;color:#6b7d90;padding:28px 15px;border-radius:12px}.ad-box span,.ad-wide span{display:block;font-size:.9rem}.ad-wide{margin:28px 0}.intro{font-size:1.12rem}.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}.info-box{border:1px solid var(--bordo);border-radius:12px;padding:18px;background:#f8fafc}.info-box h2{font-size:1.2rem;margin:0 0 8px}.check-list{padding-left:22px}.code-wrap{position:relative;margin:22px 0;min-width:0}.code-wrap pre{background:#101820;color:#e8f2ff;padding:56px 24px 24px;border-radius:12px;overflow:auto;max-width:100%;white-space:pre;tab-size:2}.code-wrap code{text-decoration:none;border:0;font-family:Consolas,"Courier New",monospace;font-size:.94rem}.copy-btn{position:absolute;right:10px;top:10px;background:#fff;color:#173b6d;border:0;border-radius:6px;padding:7px 10px;cursor:pointer;font-weight:700}.demo{border:1px solid var(--bordo);padding:20px;border-radius:12px;background:#fff}.nav-pages{display:flex;justify-content:space-between;gap:14px;margin:34px 0}.nav-pages a{max-width:48%}.list-links{list-style:none;padding:0}.list-links li{border-bottom:1px solid var(--bordo);padding:10px 0}.list-links a{text-decoration:none;color:var(--blu)}.search-box{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}.search-box input{flex:1;min-width:220px;padding:12px;border:1px solid var(--bordo);border-radius:8px}.site-footer{background:#102640;color:#dcecff;padding:30px 0;margin-top:40px}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px}.footer-inner p{margin:.3rem 0 0}.footer-links{margin-left:auto;display:flex;gap:12px;justify-content:flex-end}.footer-links a{color:#fff;text-decoration:none;background:#1d4d7f;padding:9px 13px;border-radius:7px}.notice{padding:14px 16px;background:#fff7db;border-left:4px solid var(--giallo);border-radius:6px}.notice.error{background:#fff0ef;border-color:#b33a2f}.category-intro{max-width:850px;margin-bottom:28px}.count{font-weight:700;color:var(--blu2)}
@media(max-width:900px){.hero-grid,.layout{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.tagline{display:none}.sidebar{position:static}.footer-inner{align-items:flex-start;flex-direction:column}.footer-links{margin-left:0}.info-grid{grid-template-columns:1fr}}
@media(max-width:600px){.cards{grid-template-columns:1fr}.nav-inner{display:block}.nav-pages{flex-direction:column}.nav-pages a{max-width:100%}.brand{font-size:1.55rem}.hero{padding:38px 0}.code-wrap pre{padding-left:16px;padding-right:16px;font-size:.86rem}}
.brand-by{font-size:.78rem;letter-spacing:.08em;margin-top:-4px;color:#dcecff}.seo-note{font-size:.95rem;color:#52667b}
.footer-grid{display:grid;grid-template-columns:1fr 1.35fr .8fr;gap:28px;align-items:start}.footer-column{min-width:0}.footer-about p{margin:.45rem 0}.footer-about small{color:#aac3dd}.footer-ad-column{display:flex;justify-content:center}.footer-ad-single{width:100%;min-height:120px;border:2px dashed #6f8baa;background:#173654;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#dcecff;padding:18px}.footer-ad-single span{font-size:.9rem;margin-top:4px;color:#aac3dd}.footer-links-column{text-align:right}.footer-links-column>strong{display:block;margin-bottom:10px}.footer-links{display:flex;flex-direction:column;align-items:flex-end;gap:10px;margin-left:0}.footer-links a{display:inline-block;color:#fff;text-decoration:none;background:#1d4d7f;padding:9px 13px;border-radius:7px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr}.footer-links-column{text-align:left}.footer-links{align-items:flex-start}.footer-ad-column{justify-content:flex-start}}

/* Anteprime didattiche degli snippet */
.preview-zone{margin:18px 0 28px;background:#f8fbff;border-color:#cfe0f2;overflow:auto}
.preview-card{max-width:360px;border:1px solid var(--bordo);border-radius:14px;overflow:hidden;background:#fff;box-shadow:var(--ombra)}
.preview-img{aspect-ratio:4/3;background:linear-gradient(135deg,#dbeafe,#eff6ff);display:flex;align-items:center;justify-content:center;color:var(--blu);font-weight:700}
.preview-card-body{padding:18px}.preview-card-body h3{margin:0 0 8px;color:var(--blu)}
.preview-btn{display:inline-block;background:var(--blu2);color:#fff!important;text-decoration:none;border:0;border-radius:8px;padding:10px 15px;font-weight:700;cursor:pointer}
.preview-btn-hover{transition:background .2s ease,box-shadow .2s ease}.preview-btn-hover:hover,.preview-btn-hover:focus{background:#174b80;box-shadow:0 8px 18px rgba(23,75,128,.20)}
.preview-details{border:1px solid var(--bordo);border-radius:10px;background:#fff;margin:8px 0;padding:12px}.preview-details summary{font-weight:700;color:var(--blu);cursor:pointer}
.preview-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}.preview-grid div,.preview-results span,.preview-observer div{background:#fff;border:1px solid var(--bordo);border-radius:10px;padding:14px;text-align:center}
.preview-table-wrap{overflow:auto}.preview-table{width:100%;border-collapse:collapse;background:#fff}.preview-table th,.preview-table td{border:1px solid var(--bordo);padding:10px;text-align:left}.preview-table th{background:#eaf2fb;color:var(--blu)}
.preview-form{display:grid;gap:12px;max-width:520px}.preview-form label{display:grid;gap:5px;font-weight:700;color:var(--blu)}.preview-form input,.preview-form textarea,.preview-input,.preview-textarea{width:100%;border:1px solid var(--bordo);border-radius:8px;padding:10px;font:inherit;background:#fff}.preview-form textarea,.preview-textarea{min-height:80px}
.preview-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;background:#fff;border:1px solid var(--bordo);padding:12px;border-radius:10px}.preview-breadcrumb a{text-decoration:none;color:var(--blu)}
.preview-modal{background:rgba(16,38,64,.10);border-radius:12px;padding:22px}.preview-modal-box{max-width:420px;margin:auto;background:#fff;border:1px solid var(--bordo);border-radius:14px;padding:18px;box-shadow:var(--ombra)}
.preview-sticky-layout{display:grid;grid-template-columns:minmax(0,1fr) 160px;gap:14px}.preview-sticky-layout>div,.preview-sticky-layout aside{background:#fff;border:1px solid var(--bordo);border-radius:10px;padding:14px}.preview-sticky-layout aside{color:var(--blu);font-weight:700}
.preview-fluid-type h3{font-size:clamp(1.3rem,4vw,2.2rem);margin:0 0 8px;color:var(--blu)}.preview-fluid-type p{font-size:clamp(1rem,2vw,1.18rem)}
.preview-mobile-menu{max-width:360px;background:#fff;border:1px solid var(--bordo);border-radius:12px;padding:14px}.preview-menu-list{display:grid;margin-top:10px}.preview-menu-list a{padding:9px;border-top:1px solid var(--bordo);text-decoration:none;color:var(--blu)}
.preview-copy{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.preview-copy code,.preview-csv{background:#101820;color:#e8f2ff;border-radius:10px;padding:12px;overflow:auto}
.preview-list{margin:10px 0 0;padding-left:22px}.preview-dark{background:#101820;color:#e8f2ff;border-radius:12px;padding:18px}.preview-dark h3{color:#fff;margin-top:0}.preview-dark button{border:1px solid #fff;background:transparent;color:#fff;border-radius:8px;padding:8px 12px}
.preview-tabs{background:#fff;border:1px solid var(--bordo);border-radius:12px;overflow:hidden}.preview-tab-buttons{display:flex;gap:0;background:#eaf2fb}.preview-tab-buttons button{flex:1;border:0;background:transparent;padding:10px;font-weight:700;color:var(--blu)}.preview-tab-buttons button:first-child{background:#fff}.preview-tab-panel{padding:16px}
.preview-counter,.preview-note{color:#5b6d81;margin:8px 0 0}.preview-scroll-box{min-height:150px;position:relative;background:linear-gradient(#fff,#eef5fc)}.preview-backtop{position:absolute;right:16px;bottom:16px;background:var(--blu2);color:#fff;border:0;border-radius:999px;padding:9px 13px}
.preview-results{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.preview-observer{display:grid;gap:10px}.preview-observer .fade{opacity:.72}
.preview-asp,.preview-login{background:#fff;border:1px solid var(--bordo);border-radius:12px;padding:16px}.preview-asp p,.preview-login p{margin:6px 0}
.preview-flow{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.preview-flow span{background:#fff;border:1px solid var(--bordo);border-radius:999px;padding:9px 12px;color:var(--blu);font-weight:700}.preview-flow span:not(:last-child)::after{content:" ->";color:#73869b;margin-left:8px}
.preview-pagination{display:flex;gap:8px;flex-wrap:wrap}.preview-pagination a{border:1px solid var(--bordo);background:#fff;border-radius:8px;padding:8px 11px;text-decoration:none;color:var(--blu)}.preview-pagination .active{background:var(--blu2);color:#fff}
@media(max-width:720px){.preview-sticky-layout{grid-template-columns:1fr}.preview-flow{display:grid}.preview-flow span:not(:last-child)::after{content:""}}

/* Nuove anteprime per snippet avanzati */
.preview-animated-card{max-width:360px;border:1px solid #d8e1ec;border-radius:16px;padding:22px;background:#fff;box-shadow:0 5px 18px rgba(20,45,75,.08);transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease}.preview-animated-card:hover{border-color:#2463a9;background:#f8fbff;box-shadow:0 12px 28px rgba(20,45,75,.16)}.preview-animated-card span{color:#2463a9;font-weight:700}.preview-loader{width:46px;height:46px;border:5px solid #d8e1ec;border-top-color:#2463a9;border-radius:50%;animation:previewGira 1s linear infinite}@keyframes previewGira{to{transform:rotate(360deg)}}.preview-tooltip{position:relative;width:34px;height:34px;border:0;border-radius:50%;background:#2463a9;color:#fff;font-weight:700}.preview-tooltip::after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 10px);transform:translateX(-50%);width:220px;padding:10px;border-radius:8px;background:#102640;color:#fff;opacity:1;pointer-events:none}.preview-skeleton{max-width:320px;border:1px solid #d8e1ec;border-radius:14px;padding:16px;background:#fff}.preview-skeleton span,.preview-skeleton b{display:block;border-radius:8px;background:linear-gradient(90deg,#edf2f7,#f8fafc,#edf2f7);background-size:200% 100%;animation:previewSkeleton 1.2s linear infinite}.preview-skeleton span{height:120px;margin-bottom:14px}.preview-skeleton b{height:14px;margin:10px 0}.preview-skeleton b.short{width:65%}@keyframes previewSkeleton{to{background-position:-200% 0}}.preview-timeline{list-style:none;margin:0;padding:0 0 0 26px;border-left:3px solid #d8e1ec}.preview-timeline li{position:relative;margin:0 0 22px;padding-left:18px}.preview-timeline li::before{content:"";position:absolute;left:-35px;top:4px;width:14px;height:14px;border-radius:50%;background:#2463a9;border:3px solid #fff;box-shadow:0 0 0 2px #2463a9}.preview-timeline strong{display:block;color:#173b6d}.preview-timeline span{display:block;color:#53657a}.preview-valid{background:#e9f9ef;border-left:4px solid #22a05a;padding:10px;border-radius:6px}.preview-toast{display:inline-block;background:#102640;color:#fff;border-radius:999px;padding:11px 16px;box-shadow:var(--ombra)}.preview-progress{height:8px;background:#d8e1ec;border-radius:999px;overflow:hidden}.preview-progress span{display:block;height:100%;background:#2463a9;border-radius:999px}@media (prefers-reduced-motion: reduce){.preview-loader,.preview-skeleton span,.preview-skeleton b{animation:none}}

/* Ritocchi pubblicitari e footer - versione due colonne */
.footer-grid.footer-grid-two{grid-template-columns:minmax(0,1fr) minmax(220px,.55fr);align-items:start}
.footer-grid-two .footer-links-column{text-align:right}
.footer-grid-two .footer-links{align-items:flex-end}
.ad-wide-inline{width:100%;min-height:96px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.cards>.ad-wide-inline{grid-column:1/-1;margin:4px 0 8px}
.content>.ad-wide-inline{margin:30px 0 26px}
@media(max-width:900px){.footer-grid.footer-grid-two{grid-template-columns:1fr}.footer-grid-two .footer-links-column{text-align:left}.footer-grid-two .footer-links{align-items:flex-start}}