:root{--primary: #6366f1;--primary-dark: #4f46e5;--accent: #a855f7;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--bg: #f8fafc;--card: #ffffff;--text: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--radius: 14px;--shadow: 0 4px 20px rgba(15, 23, 42, .06);--shadow-hover: 0 8px 30px rgba(15, 23, 42, .12);--nav-h: 64px}*{margin:0;padding:0;box-sizing:border-box}html,body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;scroll-behavior:smooth}#root{min-height:100vh;display:flex;flex-direction:column}a{text-decoration:none;color:inherit}button{font-family:inherit;cursor:pointer}.navbar{position:sticky;top:0;z-index:50;height:var(--nav-h);background:#ffffffd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);display:flex;align-items:center}.navbar-inner{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.brand-logo{width:34px;height:34px;border-radius:9px;display:block;object-fit:contain;flex-shrink:0}.nav-links{display:flex;align-items:center;gap:6px}.nav-link{padding:8px 16px;border-radius:9px;font-size:14px;font-weight:500;color:var(--text-muted);transition:all .2s ease;white-space:nowrap}.nav-link:hover{color:var(--primary);background:#6366f114}.nav-link.active{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent))}.lang-switcher{position:relative;margin-left:10px}.lang-switch{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:9px;border:1px solid var(--border);background:#fff;font-size:13px;font-weight:600;color:var(--text);transition:all .2s ease;cursor:pointer;white-space:nowrap}.lang-switch:hover{border-color:var(--primary);color:var(--primary)}.lang-caret{font-size:10px;opacity:.7}.lang-menu{position:absolute;top:calc(100% + 6px);right:0;z-index:100;min-width:180px;max-height:320px;overflow-y:auto;margin:0;padding:6px;list-style:none;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 8px 24px #0000001f}.lang-option{display:block;width:100%;padding:8px 12px;border:none;background:transparent;border-radius:8px;font-size:14px;color:var(--text);text-align:left;cursor:pointer}.lang-option:hover{background:var(--bg);color:var(--primary)}.lang-option.active{background:#6366f11f;color:var(--primary);font-weight:600}[dir=rtl] .lang-menu,[dir=rtl] .lang-option{text-align:right}.hamburger{display:none;flex-direction:column;gap:4px;background:none;border:none;padding:6px}.hamburger span{width:22px;height:2.5px;background:var(--text);border-radius:2px;transition:all .3s ease}.page{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:32px 20px 60px}.page-header{text-align:center;margin-bottom:32px}.page-title{font-size:32px;font-weight:800;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}.page-subtitle{font-size:15px;color:var(--text-muted)}.analyzer-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;margin-bottom:24px}.input-row{display:flex;gap:12px}.url-input{flex:1;padding:14px 18px;font-size:15px;border:2px solid var(--border);border-radius:10px;outline:none;transition:border-color .2s ease;background:#fff;color:var(--text)}.url-input:focus{border-color:var(--primary)}.analyze-btn{padding:14px 28px;font-size:15px;font-weight:700;color:#fff;border:none;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));white-space:nowrap;transition:all .25s ease;box-shadow:0 4px 14px #6366f159}.analyze-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 22px #6366f173}.analyze-btn:disabled{opacity:.6;cursor:not-allowed}.error-text{margin-top:10px;color:var(--danger);font-size:13px}.result-section{margin-top:28px}.result-title{font-size:20px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}.score-overview{display:flex;align-items:center;gap:20px;background:linear-gradient(135deg,#6366f114,#a855f714);border-radius:12px;padding:24px;margin-bottom:20px}.score-ring{position:relative;width:96px;height:96px;flex-shrink:0}.score-ring svg{transform:rotate(-90deg)}.score-ring .score-num{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;color:var(--primary-dark)}.score-meta .analyzed-url{font-size:13px;color:var(--text-muted);word-break:break-all;margin-bottom:4px}.score-meta .score-label{font-size:16px;font-weight:700}.score-meta .score-grade{display:inline-block;margin-top:6px;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:700}.grade-good{background:#10b98126;color:var(--success)}.grade-warning{background:#f59e0b26;color:var(--warning)}.grade-critical{background:#ef444426;color:var(--danger)}.metrics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.metric-card{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:16px;transition:all .2s ease}.metric-card:hover{border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-2px)}.metric-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.metric-name{font-size:14px;font-weight:600}.metric-badge{font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px}.badge-good{background:#10b98126;color:var(--success)}.badge-warning{background:#f59e0b26;color:var(--warning)}.badge-critical{background:#ef444426;color:var(--danger)}.metric-bar{height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin-bottom:10px}.metric-bar-fill{height:100%;border-radius:4px;transition:width .6s ease}.fill-good{background:var(--success)}.fill-warning{background:var(--warning)}.fill-critical{background:var(--danger)}.metric-score{font-size:13px;color:var(--text-muted);margin-bottom:8px}.metric-rec{font-size:12px;color:var(--text-muted);line-height:1.5;padding-top:8px;border-top:1px dashed var(--border)}.metric-rec strong{color:var(--text)}.suggestions{margin-top:22px;background:linear-gradient(135deg,#6366f10f,#a855f70f);border:1px solid var(--border);border-radius:12px;padding:20px}.suggestions-title{font-size:17px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}.suggestions-title:before{content:"💡";font-size:18px}.suggestions-allgood{font-size:14px;color:var(--success);font-weight:600}.suggestions-list{list-style:none;display:flex;flex-direction:column;gap:12px}.suggestion-item{display:flex;gap:10px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-left:3px solid var(--warning);border-radius:10px;padding:12px 14px}.suggestion-item.suggestion-critical{border-left-color:var(--danger)}.suggestion-item.suggestion-warning{border-left-color:var(--warning)}.suggestion-dot{flex-shrink:0;width:10px;height:10px;border-radius:50%;margin-top:6px;background:var(--warning)}.dot-critical{background:var(--danger)}.dot-warning{background:var(--warning)}.suggestion-body{display:flex;flex-direction:column;gap:5px;min-width:0}.suggestion-name{font-size:14px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;flex-wrap:wrap}.suggestion-text{font-size:13px;line-height:1.6;color:var(--text-muted)}.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:8px}.info-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;border-top:4px solid var(--primary)}.info-card.alt{border-top-color:var(--accent)}.info-card h3{font-size:19px;font-weight:700;margin-bottom:12px;color:var(--primary-dark)}.info-card.alt h3{color:var(--accent)}.info-card p{font-size:14px;line-height:1.75;color:var(--text-muted)}.info-list{list-style:none;display:flex;flex-direction:column;gap:12px}.info-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;line-height:1.65;color:var(--text-muted)}.info-list-num{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px}.info-card.alt .info-list-num{background:linear-gradient(135deg,var(--accent),var(--primary))}.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted);font-size:14px;background:var(--bg);border-radius:12px;border:2px dashed var(--border)}.hero{text-align:center;padding:60px 20px 40px;background:linear-gradient(135deg,#6366f114,#a855f714);border-radius:var(--radius);margin-bottom:30px}.hero h1{font-size:38px;font-weight:800;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:12px}.hero p{font-size:16px;color:var(--text-muted);max-width:560px;margin:0 auto 28px;line-height:1.6}.home-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.cta-btn{padding:14px 32px;font-size:15px;font-weight:700;border-radius:10px;border:none;transition:all .25s ease}.cta-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 4px 14px #6366f159}.cta-primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px #6366f173}.cta-outline{color:var(--primary);background:#fff;border:2px solid var(--primary)}.cta-outline:hover{background:#6366f114}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.feature-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;transition:all .25s ease}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}.feature-icon{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px}.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px}.feature-card p{font-size:14px;line-height:1.6;color:var(--text-muted)}.spinner{display:inline-block;width:16px;height:16px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle;margin-right:8px}@keyframes spin{to{transform:rotate(360deg)}}.footer{border-top:1px solid var(--border);background:#fff;padding:28px 20px;text-align:center}.footer-inner{max-width:1200px;margin:0 auto}.footer-credit{font-size:14px;font-weight:600;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:6px}.footer-copy{font-size:13px;color:var(--text-muted)}@media (max-width: 768px){.page{padding:20px 16px 50px}.page-title{font-size:25px}.analyzer-card{padding:20px}.input-row{flex-direction:column}.analyze-btn{width:100%}.metrics-grid,.info-grid,.feature-grid{grid-template-columns:1fr}.hero h1{font-size:28px}.hero{padding:40px 18px 30px}.hamburger{display:flex}.nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow);padding:10px 16px 14px;transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;z-index:60;transition:transform .3s ease,opacity .3s ease,visibility .3s ease}.nav-links.open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto}.nav-link{padding:12px 14px}.lang-switcher{margin:8px auto 0}.lang-menu{right:50%;transform:translate(50%)}.score-overview{flex-direction:column;align-items:flex-start;gap:12px}}[dir=rtl] body{text-align:right}[dir=rtl] .brand-logo{margin-right:0;margin-left:10px}[dir=rtl] .hero-actions,[dir=rtl] .home-actions{flex-direction:row-reverse}[dir=rtl] .analyze-form .analyze-btn{margin-left:0;margin-right:10px}[dir=rtl] .metric-head{flex-direction:row-reverse}[dir=rtl] .suggestion-body{margin-right:10px;margin-left:0}[dir=rtl] .lang-switcher{margin-left:0;margin-right:10px}[dir=rtl] .lang-menu{right:auto;left:0}