:root {
  --bg: #0b1020;
  --panel: #121933;
  --panel-2: #1a2345;
  --text: #eaf0ff;
  --muted: #aab6d3;
  --border: #2d3967;
  --accent: #7aa2ff;
  --accent-2: #9ac1ff;
  --success: #8ef0b3;
  --shadow: 0 10px 30px rgba(0,0,0,0.25);
  --code: #10192f;
}
body.light {
  --bg: #f4f7ff;
  --panel: #ffffff;
  --panel-2: #eef3ff;
  --text: #16203a;
  --muted: #5d6b8a;
  --border: #d8e1f5;
  --accent: #315efb;
  --accent-2: #4d78ff;
  --success: #0b8f45;
  --shadow: 0 10px 30px rgba(35,52,99,0.08);
  --code: #f0f4ff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text);transition:background .2s ease,color .2s ease}
.container{max-width:1000px;margin:0 auto;padding:24px 16px 60px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}
.brand{font-size:1.4rem;font-weight:700;color:var(--text);text-decoration:none}
.site-nav{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.site-nav a{text-decoration:none;color:var(--text);font-size:14px;opacity:.9}
.site-nav a:hover,.site-nav a[aria-current="page"]{text-decoration:underline;opacity:1}
.theme-toggle{display:inline-flex;align-items:center;justify-content:space-between;width:70px;padding:6px 8px;border-radius:999px;border:1px solid var(--border);background:var(--panel);cursor:pointer;box-shadow:var(--shadow);color:var(--text)}
.theme-toggle .theme-track{display:inline-flex;align-items:center;justify-content:space-between;width:100%;position:relative}
.theme-toggle .theme-thumb{position:absolute;left:0;width:26px;height:26px;border-radius:999px;background:var(--accent);transition:transform .2s ease;box-shadow:0 3px 10px rgba(0,0,0,.2)}
body.light .theme-toggle .theme-thumb{transform:translateX(28px)}
.theme-toggle .theme-icon{width:20px;text-align:center;z-index:1;font-size:14px}
.hero,.tool-card,.info-card,.faq-card{background:var(--panel);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow)}
.hero{padding:24px;margin-bottom:20px}
.hero h1{margin:0 0 12px;font-size:2rem;line-height:1.2}
.hero p{margin:0;color:var(--muted);line-height:1.6}
.tool-card,.info-card,.faq-card{padding:20px;margin-bottom:20px}
.tool-card h2,.info-card h2,.faq-card h2{margin-top:0}
.info-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:20px}
.info-card p,.faq-card p,.info-card li,.faq-card li{color:var(--muted);line-height:1.7}
.info-card ul,.faq-card ul{padding-left:18px;margin-bottom:0}
.textarea-wrap{display:flex;flex-direction:column;gap:10px}
textarea{width:100%;min-height:240px;resize:vertical;border-radius:14px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:16px;font-size:16px;line-height:1.5;outline:none}
.input-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.input-row label{font-size:14px;color:var(--muted)}
.input-row input,.input-row select{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:10px 12px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
button.action-btn,button.secondary-btn{padding:11px 14px;border-radius:10px;cursor:pointer;font-weight:600}
button.action-btn{background:var(--accent);color:#fff;border:none}
button.secondary-btn{background:transparent;color:var(--text);border:1px solid var(--border)}
.results{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-top:18px}
.result-box{background:var(--panel-2);border:1px solid var(--border);border-radius:14px;padding:14px}
.result-label{display:block;font-size:.9rem;color:var(--muted);margin-bottom:8px}
.result-value{font-size:1.5rem;font-weight:700}
.copy-status{margin-top:10px;color:var(--success);font-size:.95rem;min-height:20px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.tool-link-card{display:block;padding:16px;border-radius:16px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);text-decoration:none}
.tool-link-card strong{display:block;margin-bottom:8px}
.tool-link-card span{color:var(--muted);line-height:1.5;font-size:14px}
.table-wrap{overflow-x:auto;margin-top:14px}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left}
th{color:var(--text)} td{color:var(--muted)}
.code-block{white-space:pre-wrap;background:var(--code);color:var(--text);border:1px solid var(--border);border-radius:14px;padding:14px;min-height:80px}
footer{margin-top:30px;color:var(--muted);text-align:center;font-size:.95rem}
@media (max-width:640px){.hero h1{font-size:1.6rem}.topbar{align-items:flex-start}}


.tool-group{margin-top:28px}
.tool-group:first-child{margin-top:8px}
.tool-group-header{margin-bottom:14px}
.tool-group-header h3{margin:0 0 6px;font-size:1.2rem;line-height:1.3}
.tool-group-header p{margin:0;color:var(--muted);line-height:1.6}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.tool-link-card{display:block;padding:16px;border-radius:16px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);text-decoration:none;transition:transform .15s ease,border-color .15s ease}
.tool-link-card:hover{transform:translateY(-2px);border-color:var(--accent)}
.tool-link-card strong{display:block;margin-bottom:8px;color:var(--text)}
.tool-link-card span{color:var(--muted);line-height:1.5;font-size:14px}

.info-card a,.faq-card a,.tool-card a{color:var(--accent);text-decoration:none;font-weight:500}
.info-card a:hover,.faq-card a:hover,.tool-card a:hover{color:var(--accent-2);text-decoration:underline}
.info-card a:visited,.faq-card a:visited,.tool-card a:visited{color:var(--accent)}

.related-tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:10px}
.related-tool{display:block;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--panel-2);color:var(--text)!important;text-decoration:none;transition:transform .15s ease,border-color .15s ease,color .15s ease}
.related-tool:hover{border-color:var(--accent);transform:translateY(-2px);color:var(--text)!important;text-decoration:none}
.related-tool:visited{color:var(--text)!important}
.related-tool strong{display:block;margin-bottom:6px;color:var(--text)}
.related-tool span{color:var(--muted);line-height:1.5}
.compare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}
.compare-grid textarea{min-height:220px}
.output-box{background:var(--panel-2);border:1px solid var(--border);border-radius:14px;padding:16px;color:var(--text);min-height:120px;white-space:pre-wrap;line-height:1.6}