:root{
  --bg:#0f1219; --bg-2:#161a24; --card:#1b202c; --border:#2a3040;
  --text:#e7ebf3; --muted:#94a0b8; --accent:#4f7cff; --accent-2:#7c9bff;
  --ok:#3ecf8e; --warn:#f5b942; --err:#f56464; --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
a{color:var(--accent-2); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px; margin:0 auto; padding:0 20px}
h1,h2,h3{line-height:1.25; font-weight:700}
h1{font-size:2rem}
h2{font-size:1.5rem; margin-top:2.5rem}
.muted{color:var(--muted)}
code, pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
pre{background:#0c0f16; border:1px solid var(--border); border-radius:var(--radius); padding:14px 16px; overflow:auto}

/* header */
.site-header{position:sticky; top:0; z-index:50; background:rgba(15,18,25,.9); backdrop-filter:blur(8px); border-bottom:1px solid var(--border)}
.header-inner{display:flex; align-items:center; gap:24px; height:64px}
.logo{display:flex; align-items:center; gap:8px; font-weight:800; color:var(--text); font-size:1.1rem}
.logo-badge{display:inline-flex; align-items:center; justify-content:center; width:28px; height:28px; border-radius:8px; background:linear-gradient(135deg,var(--accent),#8a5cf6); color:#fff; font-weight:800}
.main-nav{display:flex; align-items:center; gap:20px; flex:1}
.main-nav > a{color:var(--muted); font-weight:500}
.main-nav > a:hover{color:var(--text)}
.dropdown{position:relative}
.dropdown-toggle{background:none; border:none; color:var(--muted); font:inherit; font-weight:500; cursor:pointer; padding:0}
.dropdown-toggle:hover{color:var(--text)}
.dropdown-panel{
  display:none; position:absolute; top:36px; left:-20px; background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); padding:20px; gap:28px; grid-template-columns:repeat(6,160px); box-shadow:0 20px 50px rgba(0,0,0,.45);
}
.dropdown.open .dropdown-panel{display:grid}
.dd-col{display:flex; flex-direction:column; gap:6px}
.dd-title{color:var(--muted); font-size:.75rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:4px}
.dd-col a{color:var(--text); font-size:.9rem}
.dd-col a.active{color:var(--accent-2)}
.header-cta{margin-left:auto}
.btn{display:inline-flex; align-items:center; justify-content:center; padding:10px 18px; border-radius:8px; font-weight:600; border:1px solid var(--border); cursor:pointer}
.btn-primary{background:var(--accent); border-color:var(--accent); color:#fff}
.btn-primary:hover{background:var(--accent-2); text-decoration:none}
.btn-sm{padding:7px 14px; font-size:.9rem}
.btn-ghost{background:transparent; color:var(--text)}

/* hero */
.hero{padding:64px 0 40px; text-align:center; background:radial-gradient(1200px 400px at 50% -100px, rgba(79,124,255,.18), transparent)}
.hero .eyebrow{color:var(--accent-2); font-weight:700; letter-spacing:.04em; text-transform:uppercase; font-size:.8rem}
.hero h1{font-size:2.6rem; max-width:760px; margin:14px auto}
.hero p{color:var(--muted); max-width:640px; margin:0 auto 28px}

.tool-form{display:flex; gap:10px; max-width:640px; margin:0 auto 14px; flex-wrap:wrap}
.tool-form input[type=text], .tool-form input[type=url]{
  flex:1; min-width:220px; padding:14px 16px; border-radius:10px; border:1px solid var(--border); background:var(--card); color:var(--text); font-size:1rem;
}
.tool-form input:focus{outline:2px solid var(--accent)}
.hints{display:flex; gap:8px; flex-wrap:wrap; justify-content:center; margin-top:10px}
.hint-chip{border:1px solid var(--border); border-radius:999px; padding:5px 12px; color:var(--muted); font-size:.82rem}

/* grid / cards */
.grid{display:grid; gap:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid-3,.grid-4{grid-template-columns:1fr}}

.card{background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:20px}
.tool-card{display:block; background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:16px 18px; transition:.15s border-color}
.tool-card:hover{border-color:var(--accent); text-decoration:none}
.tool-card .t{color:var(--text); font-weight:700; margin-bottom:4px}
.tool-card .d{color:var(--muted); font-size:.85rem}

.cat-block{margin-top:34px}
.cat-head{display:flex; align-items:baseline; gap:10px; margin-bottom:14px}
.cat-head h3{margin:0}
.cat-head .count{color:var(--muted); font-size:.85rem}

/* result blocks */
.result{margin-top:28px}
.kv{width:100%; border-collapse:collapse; margin:14px 0}
.kv th, .kv td{text-align:left; padding:8px 10px; border-bottom:1px solid var(--border); vertical-align:top; font-size:.92rem}
.kv th{color:var(--muted); width:220px; font-weight:600}
.badge{display:inline-flex; align-items:center; gap:6px; padding:3px 10px; border-radius:999px; font-size:.78rem; font-weight:700}
.badge-ok{background:rgba(62,207,142,.15); color:var(--ok)}
.badge-warn{background:rgba(245,185,66,.15); color:var(--warn)}
.badge-err{background:rgba(245,100,100,.15); color:var(--err)}
.chain-step{display:flex; align-items:center; gap:10px; padding:10px 14px; border:1px solid var(--border); border-radius:10px; margin-bottom:8px}
.chain-step .code{font-weight:800}
.alert{border-radius:10px; padding:12px 16px; margin:14px 0; font-size:.92rem}
.alert-err{background:rgba(245,100,100,.1); border:1px solid rgba(245,100,100,.35); color:#ffb4b4}
.alert-warn{background:rgba(245,185,66,.1); border:1px solid rgba(245,185,66,.35); color:#ffd58a}
.alert-ok{background:rgba(62,207,142,.1); border:1px solid rgba(62,207,142,.35); color:#a9f0cf}
.alert-info{background:rgba(79,124,255,.1); border:1px solid rgba(79,124,255,.35); color:#bcd0ff}

textarea.big{width:100%; min-height:180px; background:#0c0f16; color:var(--text); border:1px solid var(--border); border-radius:10px; padding:12px; font-family:ui-monospace,monospace; font-size:.88rem}
.form-row{margin-bottom:14px}
.form-row label{display:block; margin-bottom:6px; color:var(--muted); font-size:.88rem}
.form-row input, .form-row select{width:100%; padding:10px 12px; border-radius:8px; border:1px solid var(--border); background:var(--card); color:var(--text)}
.form-inline{display:flex; gap:10px; flex-wrap:wrap}
.form-inline > div{flex:1; min-width:160px}

.faq details{border-bottom:1px solid var(--border); padding:14px 0}
.faq summary{cursor:pointer; font-weight:600}

.pricing-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:24px}
@media(max-width:900px){.pricing-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.pricing-grid{grid-template-columns:1fr}}
.plan{background:var(--card); border:1px solid var(--border); border-radius:var(--radius); padding:22px; display:flex; flex-direction:column}
.plan.popular{border-color:var(--accent); box-shadow:0 0 0 1px var(--accent)}
.plan .price{font-size:1.8rem; font-weight:800; margin:10px 0}
.plan ul{padding-left:18px; color:var(--muted); flex:1}
.plan ul li{margin-bottom:6px}

.site-footer{border-top:1px solid var(--border); margin-top:60px; padding:40px 0 20px; background:var(--bg-2)}
.footer-grid{display:grid; grid-template-columns:1.6fr repeat(5,1fr); gap:24px}
@media(max-width:900px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
.footer-col a{display:block; color:var(--muted); font-size:.85rem; margin-bottom:6px}
.footer-col a:hover{color:var(--text)}
.footer-bottom{margin-top:30px; padding-top:16px; border-top:1px solid var(--border); display:flex; justify-content:space-between; color:var(--muted); font-size:.82rem; flex-wrap:wrap; gap:8px}

.section-lead{color:var(--muted); max-width:720px}
.two-col{display:grid; grid-template-columns:1fr 1fr; gap:30px}
@media(max-width:800px){.two-col{grid-template-columns:1fr}}