:root{--bg:#f8fafc;--card:#ffffff;--card-border:#e2e8f0;--text:#0f172a;--text-muted:#64748b;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--success:#10b981;--success-light:#ecfdf5;--warning:#f59e0b;--warning-light:#fffbeb;--danger:#ef4444;--danger-light:#fef2f2;--shadow:0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);--shadow-lg:0 20px 25px -5px rgba(0,0,0,0.08),0 8px 10px -6px rgba(0,0,0,0.04);--radius:12px;--radius-sm:8px;--nav-bg:rgba(255,255,255,0.92);--dropdown-bg:#ffffff}
[data-theme="dark"]{--bg:#0b0f19;--card:#131b2e;--card-border:#1e293b;--text:#f8fafc;--text-muted:#94a3b8;--primary:#3b82f6;--primary-hover:#60a5fa;--primary-light:rgba(59,130,246,0.12);--success:#10b981;--success-light:rgba(16,185,129,0.12);--warning:#f59e0b;--warning-light:rgba(245,158,11,0.12);--danger:#ef4444;--danger-light:rgba(239,68,68,0.12);--shadow:0 4px 6px -1px rgba(0,0,0,0.4);--shadow-lg:0 20px 25px -5px rgba(0,0,0,0.5);--nav-bg:rgba(11,15,25,0.92);--dropdown-bg:#131b2e}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
h1,h2,h3,h4,h5,h6{font-family:'Outfit',sans-serif;font-weight:700;line-height:1.2;color:var(--text)}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-hover)}
button,input,select,textarea{font-family:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
.header{position:sticky;top:0;z-index:1000;background:var(--nav-bg);backdrop-filter:blur(12px);border-bottom:1px solid var(--card-border);transition:all .3s ease}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-family:'Outfit',sans-serif;font-weight:800;font-size:22px;color:var(--text)}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,#2563eb,#38bdf8);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#ffffff}
.logo span{color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:24px;list-style:none}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;font-weight:500;font-size:15px;color:var(--text-muted);padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:var(--dropdown-bg);border:1px solid var(--card-border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:18px;min-width:680px;display:none;z-index:1100}
.nav-item:hover .nav-dropdown,.nav-item:focus-within .nav-dropdown{display:block}
.dropdown-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.dropdown-link{display:flex;align-items:center;gap:8px;padding:8px 10px;font-size:13px;color:var(--text);border-radius:6px;transition:all .2s ease}
.dropdown-link:hover{background:var(--primary-light);color:var(--primary);transform:translateX(3px)}
.dropdown-link svg{width:14px;height:14px;flex-shrink:0;color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:12px}
.theme-btn,.mobile-menu-btn{background:transparent;border:1px solid var(--card-border);border-radius:var(--radius-sm);width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--text);cursor:pointer;transition:all .2s ease}
.theme-btn:hover,.mobile-menu-btn:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}
.mobile-menu-btn{display:none}
.mobile-menu{display:none;position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--bg);padding:24px;overflow-y:auto;z-index:999}
.mobile-menu.active{display:block}
.mobile-menu .nav-menu{flex-direction:column;align-items:stretch;gap:12px}
.mobile-menu .nav-dropdown{position:static;transform:none;min-width:auto;box-shadow:none;border:none;padding:10px 0;display:block}
.mobile-menu .dropdown-grid{grid-template-columns:1fr;gap:6px}
.breadcrumbs-bar{background:var(--bg);padding:14px 0;border-bottom:1px solid var(--card-border);font-size:13px}
.breadcrumbs{display:flex;align-items:center;gap:8px;list-style:none;flex-wrap:wrap;color:var(--text-muted)}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs a{color:var(--text-muted)}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs .active{color:var(--primary);font-weight:600}
.hero{padding:48px 0 32px;text-align:center}
.badge-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;border-radius:999px;margin-bottom:16px;border:1px solid rgba(37,99,235,0.15)}
.hero h1{font-size:clamp(28px,4.5vw,46px);letter-spacing:-0.02em;margin-bottom:14px}
.hero p{font-size:17px;color:var(--text-muted);max-width:760px;margin:0 auto 28px}
.tool-wrapper{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:28px;margin-bottom:48px}
.mode-tabs{display:flex;gap:12px;margin-bottom:22px;border-bottom:1px solid var(--card-border);padding-bottom:14px}
.mode-tab{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--radius-sm);background:transparent;border:1px solid transparent;color:var(--text-muted);font-weight:600;font-size:14px;cursor:pointer;transition:all .2s ease}
.mode-tab:hover{color:var(--primary);background:var(--primary-light)}
.mode-tab.active{background:var(--primary);color:#ffffff}
.drop-zone{border:2px dashed var(--card-border);border-radius:var(--radius);padding:40px 20px;text-align:center;background:var(--bg);cursor:pointer;transition:all .2s ease;margin-bottom:24px}
.drop-zone.dragover{border-color:var(--primary);background:var(--primary-light)}
.drop-zone svg{width:48px;height:48px;color:var(--primary);margin-bottom:12px}
.drop-zone h3{font-size:18px;margin-bottom:6px}
.drop-zone p{font-size:13px;color:var(--text-muted)}
.drop-zone input{display:none}
.sample-btns{display:flex;gap:8px;flex-wrap:wrap}
.url-input-box-wide{display:flex;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.url-field-wrap{position:relative;flex:1;min-width:300px;display:flex;align-items:center}
.url-icon{position:absolute;left:14px;color:var(--text-muted);pointer-events:none}
.url-input{width:100%;padding:13px 16px 13px 42px;background:var(--bg);border:1px solid var(--card-border);border-radius:var(--radius-sm);color:var(--text);font-size:14px;outline:none;transition:all .2s ease}
.url-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.url-field-wrap .badge{position:absolute;right:12px}
.sample-urls-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:20px;font-size:12px}
.sample-urls-lbl{color:var(--text-muted);font-weight:600}
.sample-url-btn{background:var(--bg);border:1px solid var(--card-border);color:var(--text-muted);padding:5px 10px;border-radius:6px;font-size:11px;font-weight:500;cursor:pointer;transition:all .2s ease}
.sample-url-btn:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}
.server-metrics-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:24px}
.metric-chip{background:var(--bg);border:1px solid var(--card-border);padding:10px 14px;border-radius:var(--radius-sm);display:flex;flex-direction:column;gap:2px}
.metric-chip-lbl{font-size:11px;color:var(--text-muted);font-weight:600;text-transform:uppercase}
.metric-chip-val{font-size:14px;font-weight:700;color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;font-size:14px;font-weight:600;border-radius:var(--radius-sm);border:none;cursor:pointer;transition:all .2s ease;text-decoration:none}
.btn-primary{background:var(--primary);color:#ffffff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(37,99,235,0.25)}
.btn-outline{background:transparent;border:1px solid var(--card-border);color:var(--text)}
.btn-outline:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}
.btn-danger{background:var(--danger-light);color:var(--danger);border:1px solid rgba(239,68,68,0.2)}
.btn-danger:hover{background:var(--danger);color:#ffffff}
.btn-success{background:var(--success);color:#ffffff}
.btn-success:hover{background:#059669}
.btn-sm{padding:7px 12px;font-size:12px}
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.panel{background:var(--bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:20px}
.panel-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid var(--card-border)}
.panel-title{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.image-preview-box{position:relative;border-radius:var(--radius-sm);overflow:hidden;background:#000000;display:flex;align-items:center;justify-content:center;min-height:240px;max-height:340px;margin-bottom:18px;border:1px solid var(--card-border)}
.image-preview-box img{max-width:100%;max-height:340px;object-fit:contain;display:block}
.preview-badges{position:absolute;top:10px;left:10px;display:flex;gap:6px;flex-wrap:wrap}
.badge{padding:4px 8px;border-radius:6px;font-size:11px;font-weight:700;text-transform:uppercase}
.badge-info{background:rgba(15,23,42,0.8);color:#ffffff;backdrop-filter:blur(4px)}
.badge-green{background:var(--success);color:#ffffff}
.badge-yellow{background:var(--warning);color:#ffffff}
.badge-red{background:var(--danger);color:#ffffff}
.form-group{margin-bottom:16px}
.form-label{display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text)}
.form-label span{font-weight:400;color:var(--text-muted);font-size:12px}
.form-input,.form-select,.form-textarea{width:100%;padding:9px 12px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);color:var(--text);font-size:13px;outline:none;transition:border-color .2s ease}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.form-textarea{resize:vertical;min-height:70px}
.slider-container{display:flex;align-items:center;gap:12px}
.slider-container input[type="range"]{flex:1;accent-color:var(--primary);cursor:pointer}
.slider-val{font-size:13px;font-weight:700;color:var(--primary);min-width:44px;text-align:right}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}
.stat-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:10px;text-align:center}
.stat-val{font-size:15px;font-weight:700;color:var(--text)}
.stat-lbl{font-size:11px;color:var(--text-muted);margin-top:2px}
.score-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px;margin-bottom:18px;display:flex;align-items:center;gap:20px}
.score-circle{width:80px;height:80px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:800;font-size:24px;color:#ffffff;flex-shrink:0;box-shadow:0 4px 12px rgba(0,0,0,0.15)}
.score-good{background:linear-gradient(135deg,#10b981,#059669)}
.score-mid{background:linear-gradient(135deg,#f59e0b,#d97706)}
.score-bad{background:linear-gradient(135deg,#ef4444,#dc2626)}
.score-circle span{font-size:10px;font-weight:600;opacity:0.9}
.score-info h4{font-size:16px;margin-bottom:4px}
.score-info p{font-size:12px;color:var(--text-muted)}
.audit-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.audit-item{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);font-size:12px}
.audit-icon{width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#ffffff;font-size:10px;font-weight:700;margin-top:1px}
.audit-pass{background:var(--success)}
.audit-warn{background:var(--warning)}
.audit-fail{background:var(--danger)}
.audit-content{flex:1}
.audit-title{font-weight:700;color:var(--text);margin-bottom:2px}
.audit-desc{color:var(--text-muted);line-height:1.4}
.code-tabs{display:flex;gap:6px;margin-bottom:10px;border-bottom:1px solid var(--card-border);padding-bottom:6px}
.code-tab{padding:6px 12px;background:transparent;border:none;border-radius:6px;font-size:12px;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .2s ease}
.code-tab.active{background:var(--primary-light);color:var(--primary)}
.code-box{position:relative;background:#0d1117;border-radius:var(--radius-sm);padding:14px;overflow-x:auto}
.code-box pre{font-family:'Courier New',Courier,monospace;font-size:12px;color:#c9d1d9;line-height:1.5;margin:0;white-space:pre-wrap;word-break:break-all}
.code-copy-btn{position:absolute;top:8px;right:8px;background:#21262d;border:1px solid #30363d;color:#c9d1d9;padding:4px 10px;border-radius:6px;font-size:11px;cursor:pointer;transition:all .2s ease}
.code-copy-btn:hover{background:#30363d;color:#ffffff}
.actions-bar{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.actions-bar .btn{flex:1;min-width:140px}
.tools-section{margin:40px 0 60px}
.section-title{text-align:center;font-size:clamp(22px,3.5vw,32px);margin-bottom:10px}
.section-desc{text-align:center;font-size:15px;color:var(--text-muted);max-width:640px;margin:0 auto 32px}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.tool-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:center;gap:12px;color:var(--text);transition:all .2s ease}
.tool-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--primary)}
.tool-card svg{width:18px;height:18px;color:var(--primary);flex-shrink:0}
.tool-card span{font-size:13px;font-weight:600}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:60px}
.feature-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:24px;transition:all .2s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.feature-icon{width:48px;height:48px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-card h3{font-size:18px;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.6}
.how-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:60px}
.how-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:22px;position:relative}
.how-step{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#ffffff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;margin-bottom:14px}
.how-card h3{font-size:16px;margin-bottom:8px}
.how-card p{font-size:13px;color:var(--text-muted);line-height:1.5}
.seo-article{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:36px;margin-bottom:60px;box-shadow:var(--shadow)}
.seo-article h2{font-size:24px;margin-bottom:16px;color:var(--text)}
.seo-article p{font-size:15px;line-height:1.8;color:var(--text-muted);margin-bottom:16px}
.seo-article p:last-child{margin-bottom:0}
.seo-article strong{color:var(--text)}
.faq-list{max-width:880px;margin:0 auto 60px;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);overflow:hidden;transition:border-color .2s ease}
.faq-item.active{border-color:var(--primary)}
.faq-question{width:100%;padding:18px 22px;background:transparent;border:none;text-align:left;font-size:16px;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;cursor:pointer;gap:16px}
.faq-icon{width:20px;height:20px;color:var(--primary);transition:transform .3s ease;flex-shrink:0}
.faq-item.active .faq-icon{transform:rotate(180deg)}
.faq-answer{padding:0 22px;max-height:0;overflow:hidden;transition:all .3s ease;color:var(--text-muted);font-size:14px;line-height:1.6}
.faq-item.active .faq-answer{padding:0 22px 20px;max-height:500px}
.cta-section{background:linear-gradient(135deg,#1e3a8a,#2563eb);border-radius:var(--radius);padding:48px 32px;text-align:center;color:#ffffff;margin-bottom:60px}
.cta-section h2{color:#ffffff;font-size:clamp(24px,4vw,36px);margin-bottom:12px}
.cta-section p{color:rgba(255,255,255,0.88);font-size:16px;max-width:620px;margin:0 auto 28px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-btn-white{background:#ffffff;color:#1e3a8a}
.cta-btn-white:hover{background:#f8fafc;color:#1e40af}
.cta-btn-glass{background:rgba(255,255,255,0.15);color:#ffffff;border:1px solid rgba(255,255,255,0.3);backdrop-filter:blur(8px)}
.cta-btn-glass:hover{background:rgba(255,255,255,0.25);color:#ffffff}
.footer{background:var(--card);border-top:1px solid var(--card-border);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px;margin-bottom:40px}
.footer-brand p{font-size:13px;color:var(--text-muted);margin:14px 0;line-height:1.6;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;text-transform:uppercase;letter-spacing:0.04em}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:var(--text-muted);transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.trademark-box{background:var(--bg);border:1px solid var(--card-border);border-radius:var(--radius-sm);padding:14px 18px;margin-bottom:28px;font-size:11px;color:var(--text-muted);line-height:1.6}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:20px;border-top:1px solid var(--card-border);font-size:13px;color:var(--text-muted);flex-wrap:wrap;gap:12px}
.footer-legal-links{display:flex;gap:16px}
.cookie-banner{position:fixed;bottom:20px;left:20px;right:20px;max-width:480px;background:var(--card);border:1px solid var(--card-border);box-shadow:var(--shadow-lg);border-radius:var(--radius);padding:18px;z-index:9999;display:flex;flex-direction:column;gap:14px;animation:slideUp .4s ease}
@keyframes slideUp{from{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}
.cookie-text{font-size:13px;color:var(--text-muted);line-height:1.5}
.cookie-btns{display:flex;gap:10px;justify-content:flex-end}
.toast{position:fixed;bottom:24px;right:24px;background:#0f172a;color:#ffffff;padding:12px 20px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:8px;z-index:10000;opacity:0;transform:translateY(20px);transition:all .3s ease;pointer-events:none}
.toast.show{opacity:1;transform:translateY(0)}
@media (max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}.how-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.server-metrics-row{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){.nav-menu{display:none}.mobile-menu-btn{display:flex}.tool-grid{grid-template-columns:1fr}.features-grid{grid-template-columns:1fr}.how-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr}.server-metrics-row{grid-template-columns:1fr}.cookie-banner{left:10px;right:10px;bottom:10px}.url-input-box-wide{flex-direction:column}.url-input-box-wide .btn{width:100%}}