:root{--bg-body:#f8fafc;--bg-surface:#ffffff;--bg-card:#ffffff;--bg-elevated:#f1f5f9;--text-main:#0f172a;--text-muted:#64748b;--border-subtle:#e2e8f0;--border-focus:#3b82f6;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--accent:#06b6d4;--good:#10b981;--good-bg:#ecfdf5;--warn:#f59e0b;--warn-bg:#fffbeb;--poor:#ef4444;--poor-bg:#fef2f2;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.08),0 2px 4px -2px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -4px rgba(0,0,0,0.05);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--font-sans:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;--font-heading:'Outfit',sans-serif;--nav-height:70px}
[data-theme="dark"]{--bg-body:#090d16;--bg-surface:#0f172a;--bg-card:#131c31;--bg-elevated:#1e293b;--text-main:#f1f5f9;--text-muted:#94a3b8;--border-subtle:#1e293b;--border-focus:#60a5fa;--primary:#3b82f6;--primary-hover:#2563eb;--primary-light:rgba(59,130,246,0.15);--good:#10b981;--good-bg:rgba(16,185,129,0.15);--warn:#f59e0b;--warn-bg:rgba(245,158,11,0.15);--poor:#ef4444;--poor-bg:rgba(239,68,68,0.15);--shadow-sm:0 1px 3px rgba(0,0,0,0.4);--shadow-md:0 4px 10px rgba(0,0,0,0.4);--shadow-lg:0 12px 24px rgba(0,0,0,0.5)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);background-color:var(--bg-body);color:var(--text-main);line-height:1.6;overflow-x:hidden;transition:background-color .25s ease,color .25s ease}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-hover);text-decoration:underline}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.site-header{position:sticky;top:0;z-index:100;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);box-shadow:var(--shadow-sm);transition:background-color .25s ease}
.header-container{max-width:1240px;margin:0 auto;padding:0 1.25rem;height:var(--nav-height);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand-link{display:flex;align-items:center;gap:.6rem;text-decoration:none;font-family:var(--font-heading);font-weight:700;font-size:1.35rem;color:var(--text-main)}
.brand-badge{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:.2rem .55rem;border-radius:var(--radius-sm);font-size:.72rem;font-weight:700;letter-spacing:.5px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:1.25rem;list-style:none}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:.35rem;color:var(--text-main);font-weight:500;font-size:.92rem;padding:.5rem .75rem;border-radius:var(--radius-sm);cursor:pointer;background:none;border:none;transition:background-color .2s,color .2s}
.nav-link:hover{background-color:var(--bg-elevated);text-decoration:none;color:var(--primary)}
.dropdown-menu{position:absolute;top:100%;left:0;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:1rem;display:none;width:580px;grid-template-columns:repeat(2,1fr);gap:.6rem;z-index:110}
.nav-item:hover .dropdown-menu,.nav-item:focus-within .dropdown-menu{display:grid}
.dropdown-link{display:flex;align-items:center;gap:.5rem;padding:.45rem .6rem;color:var(--text-main);font-size:.85rem;border-radius:var(--radius-sm);transition:background .2s,color .2s}
.dropdown-link:hover{background:var(--bg-elevated);color:var(--primary);text-decoration:none}
.nav-actions{display:flex;align-items:center;gap:.75rem}
.theme-toggle-btn{background:var(--bg-elevated);border:1px solid var(--border-subtle);color:var(--text-main);width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s,background .2s}
.theme-toggle-btn:hover{transform:rotate(15deg);border-color:var(--primary)}
.mobile-nav-toggle{display:none;background:none;border:none;color:var(--text-main);font-size:1.4rem;cursor:pointer;padding:.4rem}
.breadcrumb-wrapper{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle)}
.breadcrumb-container{max-width:1240px;margin:0 auto;padding:.75rem 1.25rem;display:flex;align-items:center;gap:.5rem;font-size:.84rem;color:var(--text-muted);list-style:none;flex-wrap:wrap}
.breadcrumb-item a{color:var(--text-muted);text-decoration:none}
.breadcrumb-item a:hover{color:var(--primary);text-decoration:underline}
.breadcrumb-item.active{color:var(--text-main);font-weight:600}
.breadcrumb-sep{opacity:.4}
.hero-section{padding:3.5rem 1.25rem 2.5rem;max-width:1240px;margin:0 auto}
.hero-badge-row{display:flex;align-items:center;justify-content:center;margin-bottom:1rem}
.vital-pill{display:inline-flex;align-items:center;gap:.5rem;background:var(--primary-light);color:var(--primary);border:1px solid rgba(59,130,246,0.3);padding:.35rem .85rem;border-radius:999px;font-size:.82rem;font-weight:600}
.hero-title{text-align:center;font-family:var(--font-heading);font-size:clamp(2rem,4vw,3.2rem);font-weight:800;line-height:1.2;margin-bottom:1rem;color:var(--text-main);letter-spacing:-0.5px}
.hero-subtitle{text-align:center;max-width:760px;margin:0 auto 2.5rem;font-size:1.05rem;color:var(--text-muted)}
.tester-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2rem;margin-bottom:2.5rem}
.tester-header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;flex-wrap:wrap;gap:.75rem}
.tester-label{font-family:var(--font-heading);font-weight:700;font-size:1.1rem;display:flex;align-items:center;gap:.5rem}
.mode-toggle{display:flex;background:var(--bg-elevated);border-radius:var(--radius-sm);padding:.25rem;gap:.25rem}
.mode-btn{background:none;border:none;padding:.35rem .75rem;font-size:.82rem;font-weight:600;color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s}
.mode-btn.active{background:var(--bg-card);color:var(--primary);box-shadow:var(--shadow-sm)}
.input-wrapper{position:relative;margin-bottom:.85rem}
.url-textarea{width:100%;height:140px;padding:.85rem;border:2px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-surface);color:var(--text-main);font-size:.92rem;font-family:monospace;resize:vertical;transition:border-color .2s}
.url-textarea:focus{outline:none;border-color:var(--border-focus)}
.input-info-row{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:var(--text-muted);margin-bottom:1.25rem;flex-wrap:wrap;gap:.5rem}
.url-stats{display:flex;gap:1rem}
.valid-count{color:var(--good);font-weight:600}
.invalid-count{color:var(--poor);font-weight:600}
.controls-row{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.device-select-group{display:flex;align-items:center;gap:.5rem;font-size:.88rem;color:var(--text-muted)}
.strategy-select{padding:.5rem .85rem;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:var(--bg-surface);color:var(--text-main);font-size:.88rem}
.action-buttons{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.35rem;border-radius:var(--radius-sm);font-weight:600;font-size:.92rem;cursor:pointer;border:none;transition:background-color .2s,opacity .2s,transform .1s}
.btn:active{transform:scale(0.98)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.btn-secondary{background:var(--bg-elevated);color:var(--text-main);border:1px solid var(--border-subtle)}
.btn-secondary:hover{background:var(--border-subtle)}
.btn-ghost{background:none;color:var(--text-muted);border:1px solid transparent}
.btn-ghost:hover{background:var(--bg-elevated);color:var(--text-main)}
.results-container{display:none;margin-top:2rem}
.results-container.visible{display:block}
.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem}
.summary-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:1.25rem;box-shadow:var(--shadow-sm);text-align:center}
.summary-card-title{font-size:.82rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:.35rem}
.summary-card-val{font-size:1.85rem;font-weight:800;font-family:var(--font-heading);color:var(--text-main)}
.summary-card.good .summary-card-val{color:var(--good)}
.summary-card.warn .summary-card-val{color:var(--warn)}
.summary-card.poor .summary-card-val{color:var(--poor)}
.results-actions-bar{display:flex;justify-content:space-between;align-items:center;background:var(--bg-surface);border:1px solid var(--border-subtle);padding:.85rem 1.25rem;border-radius:var(--radius-md);margin-bottom:1.25rem;flex-wrap:wrap;gap:1rem}
.filter-tabs{display:flex;gap:.35rem}
.filter-tab{background:none;border:none;padding:.35rem .75rem;border-radius:var(--radius-sm);font-size:.82rem;font-weight:600;color:var(--text-muted);cursor:pointer}
.filter-tab.active{background:var(--primary);color:#fff}
.action-dropdown-group{display:flex;gap:.6rem;align-items:center}
.dropdown-wrapper{position:relative}
.export-menu{position:absolute;top:100%;right:0;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:.5rem;display:none;width:170px;z-index:90}
.export-menu.show{display:block}
.export-menu-item{display:flex;align-items:center;gap:.5rem;width:100%;padding:.45rem .65rem;background:none;border:none;color:var(--text-main);font-size:.84rem;text-align:left;border-radius:var(--radius-sm);cursor:pointer}
.export-menu-item:hover{background:var(--bg-elevated);color:var(--primary)}
.table-responsive{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-card);box-shadow:var(--shadow-sm);margin-bottom:2rem}
.results-table{width:100%;border-collapse:collapse;text-align:left;font-size:.88rem}
.results-table th{background:var(--bg-elevated);padding:.85rem 1rem;font-weight:600;color:var(--text-muted);border-bottom:1px solid var(--border-subtle)}
.results-table td{padding:.95rem 1rem;border-bottom:1px solid var(--border-subtle);vertical-align:middle}
.results-table tr:last-child td{border-bottom:none}
.badge-status{display:inline-flex;align-items:center;gap:.35rem;padding:.25rem .6rem;border-radius:999px;font-size:.78rem;font-weight:700;text-transform:uppercase}
.badge-status.good{background:var(--good-bg);color:var(--good)}
.badge-status.warn{background:var(--warn-bg);color:var(--warn)}
.badge-status.poor{background:var(--poor-bg);color:var(--poor)}
.score-number{font-weight:700;font-size:1.05rem;font-family:monospace}
.url-cell{max-width:320px;word-break:break-all;font-family:monospace;font-size:.82rem}
.hazard-tag{display:inline-block;padding:.15rem .45rem;border-radius:4px;font-size:.74rem;background:var(--bg-elevated);color:var(--text-muted);margin:.15rem}
.pre-features-section{max-width:1240px;margin:0 auto 3rem;padding:0 1.25rem}
.section-heading-sm{font-family:var(--font-heading);font-size:1.45rem;font-weight:700;margin-bottom:.5rem;text-align:center}
.section-subheading-sm{text-align:center;font-size:.92rem;color:var(--text-muted);margin-bottom:1.5rem}
.tools-compact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:.85rem}
.tool-tile{background:var(--bg-card);border:1px solid var(--border-subtle);padding:.85rem 1rem;border-radius:var(--radius-md);display:flex;align-items:center;gap:.65rem;color:var(--text-main);font-size:.85rem;font-weight:500;box-shadow:var(--shadow-sm);transition:transform .15s,border-color .15s,box-shadow .15s}
.tool-tile:hover{transform:translateY(-2px);border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow-md);text-decoration:none}
.tool-icon{width:28px;height:28px;border-radius:6px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0}
.content-wrapper{max-width:1240px;margin:0 auto 3rem;padding:0 1.25rem}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:3.5rem}
.feature-box{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.85rem;box-shadow:var(--shadow-sm)}
.feature-icon-bubble{width:46px;height:46px;border-radius:var(--radius-md);background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:1.15rem}
.feature-box h3{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;margin-bottom:.5rem}
.feature-box p{font-size:.9rem;color:var(--text-muted);line-height:1.55}
.how-it-works-section{margin-bottom:3.5rem;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:2.5rem 1.75rem}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.5rem;margin-top:1.5rem}
.step-item{position:relative}
.step-number{width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;margin-bottom:.85rem}
.step-item h4{font-family:var(--font-heading);font-size:1.05rem;font-weight:700;margin-bottom:.35rem}
.step-item p{font-size:.88rem;color:var(--text-muted)}
.article-section{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:2.5rem 2rem;margin-bottom:3.5rem;line-height:1.75}
.article-section h2{font-family:var(--font-heading);font-size:1.65rem;font-weight:800;margin-bottom:1rem;color:var(--text-main)}
.article-section h3{font-family:var(--font-heading);font-size:1.25rem;font-weight:700;margin:1.5rem 0 .65rem;color:var(--text-main)}
.article-section p{margin-bottom:1rem;font-size:.94rem;color:var(--text-muted)}
.article-section strong{color:var(--text-main)}
.faq-section{margin-bottom:3.5rem}
.faq-list{display:flex;flex-direction:column;gap:.85rem;max-width:900px;margin:1.5rem auto 0}
.faq-item{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);overflow:hidden}
.faq-question{width:100%;text-align:left;padding:1.15rem 1.35rem;background:none;border:none;font-family:var(--font-heading);font-size:1.02rem;font-weight:600;color:var(--text-main);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq-question::after{content:'+';font-size:1.35rem;line-height:1;transition:transform .2s}
.faq-item.active .faq-question::after{content:'-'}
.faq-answer{padding:0 1.35rem 1.15rem;font-size:.92rem;color:var(--text-muted);line-height:1.6;display:none}
.faq-item.active .faq-answer{display:block}
.cta-banner{background:linear-gradient(135deg,#1e3a8a,#2563eb);border-radius:var(--radius-lg);padding:3rem 1.75rem;text-align:center;color:#fff;margin-bottom:3.5rem}
.cta-banner h2{font-family:var(--font-heading);font-size:clamp(1.75rem,3vw,2.4rem);font-weight:800;margin-bottom:.75rem}
.cta-banner p{max-width:640px;margin:0 auto 1.85rem;font-size:1.02rem;opacity:.92}
.cta-buttons{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}
.cta-btn-white{background:#fff;color:#1e3a8a;font-weight:700;padding:.75rem 1.5rem;border-radius:var(--radius-sm);box-shadow:var(--shadow-md)}
.cta-btn-white:hover{background:#f1f5f9;color:#172554;text-decoration:none}
.cta-btn-outline{background:transparent;border:2px solid #fff;color:#fff;font-weight:700;padding:.75rem 1.5rem;border-radius:var(--radius-sm)}
.cta-btn-outline:hover{background:rgba(255,255,255,0.15);color:#fff;text-decoration:none}
.site-footer{background:var(--bg-surface);border-top:1px solid var(--border-subtle);padding:3.5rem 1.25rem 2rem}
.footer-container{max-width:1240px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:2.5rem}
.footer-col h4{font-family:var(--font-heading);font-size:.95rem;font-weight:700;text-transform:uppercase;letter-spacing:.6px;margin-bottom:1rem;color:var(--text-main)}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:.55rem}
.footer-links a{color:var(--text-muted);font-size:.85rem;text-decoration:none}
.footer-links a:hover{color:var(--primary);text-decoration:underline}
.footer-bottom{border-top:1px solid var(--border-subtle);padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-size:.82rem;color:var(--text-muted)}
.trademark-notice{margin-top:.75rem;font-size:.78rem;color:var(--text-muted);opacity:.85;text-align:center;width:100%}
.cookie-banner{position:fixed;bottom:1.25rem;left:50%;transform:translateX(-50%);max-width:680px;width:calc(100% - 2.5rem);background:var(--bg-card);border:1px solid var(--border-subtle);box-shadow:var(--shadow-lg);padding:1rem 1.25rem;border-radius:var(--radius-md);display:none;align-items:center;justify-content:space-between;gap:1rem;z-index:200}
.cookie-banner.show{display:flex}
.cookie-text{font-size:.85rem;color:var(--text-main)}
.cookie-actions{display:flex;gap:.5rem;flex-shrink:0}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.55);display:none;align-items:center;justify-content:center;z-index:300;padding:1rem}
.modal-overlay.show{display:flex}
.modal-box{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);max-width:640px;width:100%;max-height:85vh;overflow-y:auto;padding:1.75rem;box-shadow:var(--shadow-lg);position:relative}
.modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;font-size:1.35rem;color:var(--text-muted);cursor:pointer}
.modal-title{font-family:var(--font-heading);font-size:1.25rem;font-weight:700;margin-bottom:1rem}
.modal-rec-list{list-style:disc;padding-left:1.25rem;font-size:.88rem;color:var(--text-muted);display:flex;flex-direction:column;gap:.5rem}
@media(max-width:900px){
.dropdown-menu{width:100%;grid-template-columns:1fr;position:static;box-shadow:none;border:none;padding:.5rem 0}
.mobile-nav-toggle{display:block}
.nav-links{display:none;position:absolute;top:var(--nav-height);left:0;right:0;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);padding:1rem 1.25rem;flex-direction:column;align-items:flex-start}
.nav-links.open{display:flex}
}
@media(max-width:600px){
.hero-section{padding:2rem .75rem 1.5rem}
.tester-card{padding:1.25rem}
.controls-row{flex-direction:column;align-items:stretch}
.action-buttons{width:100%}
.action-buttons .btn{flex:1}
.results-actions-bar{flex-direction:column;align-items:stretch}
.cookie-banner{flex-direction:column;align-items:stretch}
.cookie-actions{width:100%}
.cookie-actions button{flex:1}
}