:root{
  --bg:#ffffff; --bg-soft:#f8fafc; --text:#0f172a; --text-muted:#475569;
  --border:#e2e8f0; --primary:#6366f1; --primary-2:#4f46e5;
  --card:#ffffff; --success:#10b981; --warning:#f59e0b; --danger:#ef4444;
  --shadow:0 10px 30px rgba(15,23,42,.06); --radius:16px;
  --code-bg:#0f172a; --code-text:#e2e8f0;
}
[data-theme="dark"]{
  --bg:#0b1020; --bg-soft:#111a33; --text:#e6eaf5; --text-muted:#94a3b8;
  --border:#1e2a4a; --card:#121c36; --code-bg:#020617; --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  margin:0; font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg); color:var(--text); line-height:1.6; overflow-x:hidden;
}
h1,h2,h3,h4{font-family:"Outfit",sans-serif;letter-spacing:-.02em;color:var(--text)}
.card h4, .feature h4, .step h4{color:var(--text) !important}
a{color:var(--primary);text-decoration:none}
img{max-width:100%}
.container{max-width:1220px;margin:0 auto;padding:0 20px}
.muted{color:var(--text-muted)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.btn{border-radius:12px;padding:11px 18px;font-weight:600;border:1px solid transparent;display:inline-flex;align-items:center;gap:8px;cursor:pointer;transition:.2s}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 20px rgba(99,102,241,.3)}
.btn-ghost{background:var(--bg-soft);border-color:var(--border);color:var(--text)}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}
.badge{padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.02em}
.badge-success{background:rgba(16,185,129,.15);color:#059669}
.badge-warning{background:rgba(245,158,11,.15);color:#d97706}
.badge-danger{background:rgba(239,68,68,.15);color:#dc2626}
.badge-info{background:rgba(99,102,241,.12);color:var(--primary)}

/* Navbar */
.navbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.8);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
[data-theme="dark"] .navbar{background:rgba(11,16,32,.8)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{font-family:"Outfit";font-weight:800;font-size:22px;color:var(--text);display:flex;align-items:center;gap:10px}
.logo span{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link-btn{padding:9px 14px;border-radius:10px;background:transparent;border:0;font-weight:600;color:var(--text);cursor:pointer;display:flex;align-items:center;gap:6px}
.nav-link-btn:hover{background:var(--bg-soft)}
.dropdown-menu{position:absolute;left:0;top:100%;min-width:320px;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:8px;display:none;max-height:420px;overflow:auto;z-index:50}
.nav-item.open .dropdown-menu{display:block}
.dropdown-menu a{display:block;padding:10px 12px;border-radius:10px;color:var(--text);font-weight:500;font-size:14px}
.dropdown-menu a:hover{background:var(--bg-soft);color:var(--primary)}
.hamburger{display:none;background:var(--bg-soft);border:1px solid var(--border);width:42px;height:42px;border-radius:10px;align-items:center;justify-content:center}
@media(max-width:980px){
  .nav-links{display:none;position:absolute;left:0;right:0;top:68px;background:var(--card);border-bottom:1px solid var(--border);flex-direction:column;align-items:stretch;padding:16px;gap:8px}
  .nav-links.active{display:flex}
  .hamburger{display:flex}
  .nav-item .dropdown-menu{position:static;min-width:0;box-shadow:none;border:0;padding:0;background:transparent;display:none}
  .nav-item.open .dropdown-menu{display:block}
}

/* Breadcrumb */
.breadcrumb{padding:18px 0 0;font-size:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb span.sep{opacity:.4}

/* Hero */
.hero{padding:34px 0 18px;display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.hero h1{font-size:44px;line-height:1.05;margin:10px 0 12px}
.hero p.lead{font-size:17px;color:var(--text-muted);margin:0 0 18px}
.tool-card{padding:18px}
.tool-card .label{font-weight:700;font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted);margin-bottom:8px;display:block}
textarea.input, select.input, input.input{
  width:100%;background:var(--bg-soft);border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:14px;color:var(--text);outline:0;transition:.2s
}
textarea.input:focus, select.input:focus, input.input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(99,102,241,.12)}
textarea.input{min-height:148px;resize:vertical;font-family:ui-monospace,Menlo,monospace}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
@media(max-width:980px){.hero{grid-template-columns:1fr}.hero h1{font-size:32px}.grid-2,.grid-3{grid-template-columns:1fr}}
.validation-msg{font-size:12.5px;margin-top:6px;min-height:18px}
.validation-msg.error{color:var(--danger)} .validation-msg.ok{color:var(--success)}
.result-wrap{margin-top:18px;display:none}
.result-wrap.show{display:block}
.result-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px 16px;border-bottom:1px solid var(--border)}
.result-body{padding:16px}
.url-result{border:1px solid var(--border);border-radius:14px;padding:14px;margin-bottom:12px;background:var(--bg-soft)}
.code{font-family:ui-monospace,Menlo,monospace;background:var(--code-bg);color:var(--code-text);padding:12px;border-radius:10px;overflow:auto;font-size:13px}
.progress{height:8px;background:var(--border);border-radius:999px;overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),#22d3ee);width:0%;transition:.3s}

/* Share */
.share{display:flex;gap:10px;flex-wrap:wrap;align-items:center;padding:16px;border:1px dashed var(--border);border-radius:14px;background:var(--bg-soft);margin:26px 0}

/* Sections */
.section{padding:46px 0}
.section h2{font-size:30px;margin:0 0 10px}
.section p.desc{color:var(--text-muted);max-width:760px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.feature{padding:18px}
.feature .icon{width:44px;height:44px;border-radius:12px;background:rgba(99,102,241,.12);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:12px}
@media(max-width:900px){.feature-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.feature-grid{grid-template-columns:1fr}}

/* More tools */
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.tools-grid a{padding:10px 12px;border-radius:10px;background:var(--card);border:1px solid var(--border);font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tools-grid a:hover{border-color:var(--primary);color:var(--primary)}
@media(max-width:900px){.tools-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.tools-grid{grid-template-columns:1fr}}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{padding:18px;position:relative}
.step span.num{width:34px;height:34px;border-radius:999px;background:var(--text);color:var(--bg);display:inline-flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:10px}
@media(max-width:800px){.steps{grid-template-columns:1fr}}

/* SEO content */
.prose{max-width:880px}
.prose p{color:var(--text-muted);margin:0 0 14px}
.prose h3{margin:18px 0 8px}

/* FAQ */
.faq-item{border:1px solid var(--border);border-radius:12px;padding:14px 16px;background:var(--card);margin-bottom:10px}
.faq-q{font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-a{display:none;margin-top:10px;color:var(--text-muted)}
.faq-item.open .faq-a{display:block}

/* CTA */
.cta{background:linear-gradient(135deg,#6366f1 0%,#4338ca 60%,#0ea5e9 100%);color:#fff;border-radius:22px;padding:28px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.cta h3{margin:0;font-size:26px;color:#fff}
.cta p{margin:4px 0 0;color:rgba(255,255,255,.85)}

/* Footer */
footer{border-top:1px solid var(--border);padding:36px 0 18px;margin-top:22px;background:var(--bg-soft)}
.footer-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.footer-grid h4{font-size:13px;text-transform:uppercase;letter-spacing:.06em;margin:0 0 10px;color:var(--text-muted)}
.footer-grid a{display:block;padding:4px 0;color:var(--text-muted);font-size:13px}
.footer-grid a:hover{color:var(--primary)}
@media(max-width:900px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
.copy{border-top:1px solid var(--border);margin-top:18px;padding-top:14px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--text-muted)}

/* Cookie */
.cookie{position:fixed;left:16px;right:16px;bottom:16px;z-index:200;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);padding:14px;display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cookie p{margin:0;font-size:13px;color:var(--text-muted)}