:root{--bg-primary:#f8fafc;--bg-card:#ffffff;--bg-card-subtle:#f1f5f9;--text-main:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--border-focus:#3b82f6;--brand-primary:#2563eb;--brand-hover:#1d4ed8;--brand-light:#eff6ff;--accent:#059669;--accent-bg:#ecfdf5;--warning-bg:#fffbeb;--warning-text:#b45309;--warning-border:#fde68a;--danger-bg:#fef2f2;--danger-text:#dc2626;--danger-border:#fecaca;--radius:12px;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1);--font-sans:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;--font-heading:'Outfit',sans-serif}
[data-theme="dark"]{--bg-primary:#090d16;--bg-card:#111827;--bg-card-subtle:#1e293b;--text-main:#f8fafc;--text-muted:#94a3b8;--border:#334155;--border-focus:#60a5fa;--brand-primary:#3b82f6;--brand-hover:#60a5fa;--brand-light:#172554;--accent:#10b981;--accent-bg:#064e3b;--warning-bg:#451a03;--warning-text:#fde68a;--warning-border:#78350f;--danger-bg:#450a0a;--danger-text:#fca5a5;--danger-border:#7f1d1d;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.4);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.5);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.5)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background-color:var(--bg-primary);color:var(--text-main);font-family:var(--font-sans);font-size:16px;line-height:1.6;overflow-x:hidden;transition:background-color .25s ease,color .25s ease}
img,svg{display:block;max-width:100%}
a{color:var(--brand-primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--brand-hover)}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:1.25rem;padding-right:1.25rem}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:background .2s}
[data-theme="dark"] .site-header{background:rgba(17,24,39,0.85)}
.nav-wrapper{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand-logo{display:flex;align-items:center;gap:.6rem;font-family:var(--font-heading);font-weight:700;font-size:1.35rem;color:var(--text-main)}
.brand-logo span{color:var(--brand-primary)}
.nav-links{display:flex;align-items:center;gap:1.5rem;list-style:none}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:.4rem;padding:.5rem .75rem;font-weight:500;color:var(--text-main);border-radius:8px;transition:all .2s;cursor:pointer;background:none;border:none}
.nav-link:hover{background-color:var(--bg-card-subtle);color:var(--brand-primary)}
.dropdown-menu{display:none;position:absolute;top:100%;left:0;min-width:540px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:1.25rem;z-index:200}
.nav-item:hover .dropdown-menu,.nav-item:focus-within .dropdown-menu{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.dropdown-col-title{font-family:var(--font-heading);font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.6rem;padding-bottom:.3rem;border-bottom:1px solid var(--border)}
.dropdown-list{list-style:none;display:flex;flex-direction:column;gap:.35rem}
.dropdown-item a{display:block;padding:.35rem .6rem;font-size:.875rem;color:var(--text-main);border-radius:6px;transition:all .15s}
.dropdown-item a:hover{background:var(--bg-card-subtle);color:var(--brand-primary);transform:translateX(3px)}
.header-actions{display:flex;align-items:center;gap:.75rem}
.theme-toggle-btn{background:var(--bg-card-subtle);border:1px solid var(--border);color:var(--text-main);width:40px;height:40px;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)}
.mobile-menu-btn{display:none;background:none;border:none;color:var(--text-main);cursor:pointer;padding:.4rem}
.mobile-nav-panel{display:none;padding:1rem 0;border-top:1px solid var(--border)}
.mobile-nav-panel.active{display:block}
.mobile-nav-panel a{display:block;padding:.6rem 0;font-weight:500;color:var(--text-main)}
.breadcrumb-nav{padding:1rem 0;font-size:.875rem;color:var(--text-muted)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;list-style:none}
.breadcrumb-item a{color:var(--text-muted)}
.breadcrumb-item a:hover{color:var(--brand-primary)}
.breadcrumb-sep{color:var(--text-muted);opacity:.6}
.hero-section{padding:2.5rem 0 3rem;text-align:center}
.badge-pill{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem .9rem;font-size:.825rem;font-weight:600;color:var(--brand-primary);background:var(--brand-light);border-radius:9999px;margin-bottom:1.25rem}
.hero-title{font-family:var(--font-heading);font-size:clamp(2rem,4vw,3.25rem);font-weight:800;line-height:1.2;color:var(--text-main);margin-bottom:1rem;letter-spacing:-.02em}
.hero-desc{max-width:760px;margin:0 auto 2.5rem;font-size:1.125rem;color:var(--text-muted)}
.converter-card{background:var(--bg-card);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-lg);padding:1.75rem;margin-bottom:3rem;text-align:left}
.converter-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border);margin-bottom:1.5rem}
.toggle-group{display:flex;background:var(--bg-card-subtle);border-radius:10px;padding:3px;gap:2px}
.toggle-btn{background:none;border:none;padding:.5rem 1rem;font-size:.875rem;font-weight:600;color:var(--text-muted);border-radius:8px;cursor:pointer;transition:all .2s}
.toggle-btn.active{background:var(--bg-card);color:var(--brand-primary);box-shadow:var(--shadow-sm)}
.sample-pills-wrap{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1.25rem}
.sample-label{font-size:.825rem;font-weight:600;color:var(--text-muted)}
.sample-pill{background:var(--bg-card-subtle);border:1px solid var(--border);color:var(--text-main);padding:.25rem .65rem;border-radius:6px;font-size:.8rem;cursor:pointer;transition:all .15s}
.sample-pill:hover{border-color:var(--brand-primary);color:var(--brand-primary)}
.input-group-wrapper{display:flex;flex-direction:column;gap:.6rem;margin-bottom:1.25rem}
.input-label-bar{display:flex;justify-content:space-between;align-items:center;font-size:.875rem;font-weight:600}
.text-area-box{width:100%;min-height:140px;padding:1rem;border:1px solid var(--border);border-radius:12px;background:var(--bg-primary);color:var(--text-main);font-family:monospace;font-size:.95rem;line-height:1.5;resize:vertical;transition:border-color .2s,box-shadow .2s;outline:none}
.text-area-box:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(59,130,246,0.15)}
.validation-notice{display:none;font-size:.85rem;padding:.6rem 1rem;border-radius:8px;margin-top:.4rem}
.validation-notice.visible{display:flex;align-items:center;gap:.5rem}
.validation-notice.error{background:var(--danger-bg);color:var(--danger-text);border:1px solid var(--danger-border)}
.validation-notice.warning{background:var(--warning-bg);color:var(--warning-text);border:1px solid var(--warning-border)}
.validation-notice.success{background:var(--accent-bg);color:var(--accent);border:1px solid var(--accent)}
.actions-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.5rem}
.left-controls{display:flex;align-items:center;gap:1rem}
.checkbox-label{display:inline-flex;align-items:center;gap:.4rem;font-size:.875rem;cursor:pointer;user-select:none;color:var(--text-muted)}
.btn-primary{background:var(--brand-primary);color:#fff;border:none;padding:.75rem 1.75rem;font-size:1rem;font-weight:600;border-radius:10px;cursor:pointer;display:inline-flex;align-items:center;gap:.5rem;transition:all .2s;box-shadow:var(--shadow-sm)}
.btn-primary:hover:not(:disabled){background:var(--brand-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn-secondary{background:var(--bg-card-subtle);color:var(--text-main);border:1px solid var(--border);padding:.7rem 1.25rem;font-size:.9rem;font-weight:600;border-radius:10px;cursor:pointer;transition:all .15s}
.btn-secondary:hover{background:var(--border)}
.output-card{background:var(--bg-card);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-lg);padding:1.75rem;margin-bottom:3rem}
.output-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border);margin-bottom:1.25rem}
.output-title-group{display:flex;align-items:center;gap:.75rem}
.output-title{font-family:var(--font-heading);font-size:1.35rem;font-weight:700}
.stats-badge-list{display:flex;flex-wrap:wrap;gap:.5rem}
.stat-pill{padding:.25rem .6rem;background:var(--bg-card-subtle);border:1px solid var(--border);border-radius:6px;font-size:.78rem;font-weight:600;color:var(--text-muted)}
.stat-pill strong{color:var(--text-main)}
.output-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.action-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem .85rem;font-size:.85rem;font-weight:600;background:var(--bg-card-subtle);border:1px solid var(--border);color:var(--text-main);border-radius:8px;cursor:pointer;transition:all .15s}
.action-btn:hover{background:var(--border);color:var(--brand-primary)}
.dropdown-wrapper{position:relative}
.download-dropdown{display:none;position:absolute;top:100%;right:0;min-width:140px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow-md);z-index:50;padding:.35rem 0}
.download-dropdown.show{display:block}
.download-dropdown button{display:block;width:100%;text-align:left;padding:.5rem .9rem;font-size:.85rem;background:none;border:none;color:var(--text-main);cursor:pointer}
.download-dropdown button:hover{background:var(--bg-card-subtle);color:var(--brand-primary)}
.homograph-alert{display:none;background:var(--warning-bg);border:1px solid var(--warning-border);color:var(--warning-text);padding:1rem 1.25rem;border-radius:10px;margin-bottom:1.25rem;font-size:.9rem}
.homograph-alert.active{display:flex;align-items:flex-start;gap:.75rem}
.table-responsive{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:10px;border:1px solid var(--border)}
.results-table{width:100%;border-collapse:collapse;font-size:.9rem;text-align:left}
.results-table th{background:var(--bg-card-subtle);padding:.85rem 1rem;font-weight:600;color:var(--text-muted);border-bottom:1px solid var(--border)}
.results-table td{padding:.85rem 1rem;border-bottom:1px solid var(--border);vertical-align:middle}
.results-table tr:last-child td{border-bottom:none}
.results-table tr:hover td{background:rgba(59,130,246,0.03)}
.domain-code{font-family:monospace;font-size:.95rem;background:var(--bg-primary);padding:.2rem .5rem;border-radius:5px;border:1px solid var(--border);display:inline-block;word-break:break-all}
.status-tag{display:inline-block;padding:.2rem .55rem;border-radius:6px;font-size:.75rem;font-weight:700;text-transform:uppercase}
.status-tag.success{background:var(--accent-bg);color:var(--accent)}
.status-tag.warning{background:var(--warning-bg);color:var(--warning-text)}
.status-tag.danger{background:var(--danger-bg);color:var(--danger-text)}
.codepoints-panel{margin-top:1.5rem;background:var(--bg-card-subtle);border-radius:12px;padding:1.25rem;border:1px solid var(--border)}
.codepoints-title{font-size:.95rem;font-weight:700;margin-bottom:.75rem}
.codepoints-grid{display:flex;flex-wrap:wrap;gap:.5rem}
.cp-tag{display:inline-flex;flex-direction:column;align-items:center;background:var(--bg-card);border:1px solid var(--border);padding:.35rem .6rem;border-radius:6px;min-width:48px}
.cp-char{font-size:1.1rem;font-weight:700;line-height:1}
.cp-hex{font-size:.7rem;font-family:monospace;color:var(--text-muted);margin-top:.2rem}
.section-title-wrap{text-align:center;margin-bottom:2.5rem}
.section-subtitle{color:var(--brand-primary);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}
.section-title{font-family:var(--font-heading);font-size:clamp(1.75rem,3vw,2.4rem);font-weight:800;color:var(--text-main)}
.section-desc{color:var(--text-muted);max-width:650px;margin:.75rem auto 0;font-size:1rem}
.more-tools-section{padding:3.5rem 0;border-top:1px solid var(--border)}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}
.tool-card{background:var(--bg-card);border:1px solid var(--border);padding:1.1rem;border-radius:12px;display:flex;align-items:center;gap:.9rem;color:var(--text-main);transition:transform .2s,border-color .2s,box-shadow .2s}
.tool-card:hover{transform:translateY(-2px);border-color:var(--brand-primary);box-shadow:var(--shadow-md);color:var(--brand-primary)}
.tool-icon-box{width:40px;height:40px;border-radius:8px;background:var(--brand-light);color:var(--brand-primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.tool-info{display:flex;flex-direction:column}
.tool-name{font-weight:600;font-size:.9rem}
.tool-sub{font-size:.75rem;color:var(--text-muted)}
.features-section{padding:4rem 0;background:var(--bg-card-subtle);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.5rem}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:1.75rem;box-shadow:var(--shadow-sm);transition:all .2s}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.feature-icon{width:52px;height:52px;background:var(--brand-light);color:var(--brand-primary);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:1.25rem}
.feature-card h3{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;margin-bottom:.6rem}
.feature-card p{color:var(--text-muted);font-size:.925rem;line-height:1.6}
.how-it-works-section{padding:4rem 0}
.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;position:relative}
.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:2rem 1.5rem;text-align:center;position:relative}
.step-num{position:absolute;top:-18px;left:50%;transform:translateX(-50%);width:36px;height:36px;background:var(--brand-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-family:var(--font-heading);box-shadow:var(--shadow-sm)}
.step-card h3{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;margin:1rem 0 .5rem}
.step-card p{color:var(--text-muted);font-size:.9rem}
.seo-content-section{padding:4.5rem 0;background:var(--bg-card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.seo-content-article{max-width:920px;margin:0 auto}
.seo-content-article h2{font-family:var(--font-heading);font-size:2rem;font-weight:800;margin-bottom:1.5rem;color:var(--text-main);letter-spacing:-.01em}
.seo-content-article h3{font-family:var(--font-heading);font-size:1.35rem;font-weight:700;margin:2rem 0 .75rem;color:var(--text-main)}
.seo-content-article p{margin-bottom:1.25rem;color:var(--text-muted);line-height:1.8;font-size:1.02rem}
.seo-content-article ul{margin:1rem 0 1.5rem 1.5rem;color:var(--text-muted);line-height:1.8}
.seo-content-article li{margin-bottom:.5rem}
.faq-section{padding:4.5rem 0}
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:1rem}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:box-shadow .2s}
.faq-question{width:100%;padding:1.25rem 1.5rem;text-align:left;background:none;border:none;color:var(--text-main);font-family:var(--font-heading);font-size:1.1rem;font-weight:700;display:flex;justify-content:space-between;align-items:center;cursor:pointer}
.faq-icon{transition:transform .2s;color:var(--text-muted)}
.faq-item.active .faq-icon{transform:rotate(180deg);color:var(--brand-primary)}
.faq-answer{display:none;padding:0 1.5rem 1.25rem;color:var(--text-muted);line-height:1.7;font-size:.95rem}
.faq-item.active .faq-answer{display:block}
.cta-section{padding:4.5rem 0;background:linear-gradient(135deg,rgba(37,99,235,0.06) 0%,rgba(5,150,105,0.06) 100%);border-top:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center}
.cta-content{max-width:720px;margin:0 auto}
.cta-title{font-family:var(--font-heading);font-size:clamp(1.8rem,3vw,2.5rem);font-weight:800;margin-bottom:1rem}
.cta-desc{color:var(--text-muted);font-size:1.05rem;margin-bottom:2rem}
.cta-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem}
.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:4rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2.5rem;margin-bottom:3rem}
.footer-col h4{font-family:var(--font-heading);font-size:.95rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-main);margin-bottom:1.25rem}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:.6rem}
.footer-links a{color:var(--text-muted);font-size:.875rem;transition:color .15s}
.footer-links a:hover{color:var(--brand-primary)}
.footer-bottom{border-top:1px solid var(--border);padding-top:2rem;text-align:center;font-size:.85rem;color:var(--text-muted);display:flex;flex-direction:column;gap:.75rem}
.footer-legal-links{display:flex;flex-wrap:wrap;justify-content:center;gap:1.5rem}
.cookie-banner{position:fixed;bottom:20px;right:20px;left:20px;max-width:480px;background:var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow-lg);padding:1.25rem 1.5rem;border-radius:14px;z-index:999;display:none;flex-direction:column;gap:1rem}
.cookie-banner.show{display:flex}
.cookie-text{font-size:.875rem;color:var(--text-muted);line-height:1.5}
.cookie-actions{display:flex;justify-content:flex-end;gap:.75rem}
.cookie-btn-accept{background:var(--brand-primary);color:#fff;border:none;padding:.45rem 1.1rem;border-radius:8px;font-size:.85rem;font-weight:600;cursor:pointer}
.cookie-btn-dismiss{background:var(--bg-card-subtle);border:1px solid var(--border);color:var(--text-main);padding:.45rem 1.1rem;border-radius:8px;font-size:.85rem;font-weight:600;cursor:pointer}
.toast-msg{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:#0f172a;color:#fff;padding:.6rem 1.25rem;border-radius:9999px;font-size:.875rem;font-weight:500;box-shadow:var(--shadow-lg);z-index:1000;opacity:0;pointer-events:none;transition:opacity .25s ease}
.toast-msg.show{opacity:1}
@media(max-width:992px){.dropdown-menu{min-width:320px;grid-template-columns:1fr}.nav-links{display:none}.mobile-menu-btn{display:block}}
@media(max-width:640px){.container{padding-left:1rem;padding-right:1rem}.converter-card,.output-card{padding:1.25rem}.actions-bar{flex-direction:column;align-items:stretch}.btn-primary{width:100%;justify-content:center}.cookie-banner{left:10px;right:10px;bottom:10px}}