:root{
 --bg:#0a0a12;--bg2:#10101c;--panel:#15152a;--panel2:#1c1c34;--line:#2a2a45;
 --ink:#e8e8f5;--muted:#9a9ab8;--dim:#6f6f92;
 --p:#a855f7;--p2:#7c3aed;--cy:#22d3ee;--pink:#f43f5e;--lime:#a3e635;
 --r:14px;--glow:0 0 24px rgba(168,85,247,.35)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
 background:var(--bg);color:var(--ink);line-height:1.75;font-size:17px;
 background-image:radial-gradient(ellipse 80% 50% at 50% -10%,rgba(168,85,247,.16),transparent),
   radial-gradient(ellipse 60% 40% at 90% 10%,rgba(34,211,238,.08),transparent);
 background-repeat:no-repeat;background-attachment:fixed}
.container{max-width:1120px;margin:0 auto;padding:0 18px}
a{color:var(--cy);text-decoration:none}
a:hover{text-decoration:underline}
::selection{background:var(--p);color:#fff}
/* ---------- header ---------- */
header{position:sticky;top:0;z-index:60;background:rgba(10,10,18,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:14px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;color:var(--ink);letter-spacing:-.3px}
.logo:hover{text-decoration:none}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--p),var(--cy));
 display:inline-flex;align-items:center;justify-content:center;font-weight:800;color:#0a0a12;font-size:1.05rem;box-shadow:var(--glow)}
.logo em{font-style:normal;color:var(--p);}
.nav-links{display:flex;gap:20px;list-style:none;align-items:center}
.nav-links a{color:var(--muted);font-weight:500;font-size:.94rem}
.nav-links a:hover,.nav-links a.active{color:var(--ink);text-decoration:none}
.nav-links a.active{color:var(--p)}
.menu-btn{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--ink);line-height:1}
/* ---------- breadcrumbs ---------- */
.breadcrumbs{border-bottom:1px solid var(--line);font-size:.85rem;color:var(--dim);padding:9px 0;background:rgba(16,16,28,.5)}
.breadcrumbs a{color:var(--dim)}
.breadcrumbs a:hover{color:var(--cy)}
.breadcrumbs .sep{margin:0 6px;opacity:.5}
.breadcrumbs a,.breadcrumbs span{display:inline-block;padding:4px 0}
/* ---------- hero / page head ---------- */
.hero{padding:46px 0 34px;text-align:center}
.hero h1{font-size:2.5rem;font-weight:800;letter-spacing:-1px;line-height:1.2;margin-bottom:14px}
.hero h1 .g{background:linear-gradient(100deg,var(--p),var(--cy));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{color:var(--muted);font-size:1.08rem;max-width:760px;margin:0 auto}
.page-head{padding:34px 0 6px}
.page-head h1{font-size:2rem;font-weight:800;letter-spacing:-.6px;line-height:1.3;margin-bottom:10px}
.page-head .lead{color:var(--muted);max-width:820px;font-size:1.02rem}
.meta-line{color:var(--dim);font-size:.88rem;margin-bottom:16px}
/* ---------- tool ---------- */
.tool{background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line);
 border-radius:18px;padding:24px;margin:24px 0;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.tool h2{font-size:1.15rem;margin-bottom:14px;font-weight:700}
.io{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fld{display:flex;flex-direction:column;gap:7px}
.fld label{font-size:.85rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}
textarea,input[type=text],input[type=email],select{width:100%;padding:14px;border:1px solid var(--line);
 border-radius:12px;background:#0d0d18;color:var(--ink);font-family:inherit;font-size:1rem;outline:none;resize:vertical}
textarea{min-height:150px;line-height:2.4;padding-top:20px;padding-bottom:20px}
textarea:focus,input:focus,select:focus{border-color:var(--p);box-shadow:0 0 0 3px rgba(168,85,247,.18)}
textarea.out{background:#0b0b16;color:var(--ink)}
.ctrl{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin:18px 0 6px}
.slider-wrap{flex:1 1 260px;display:flex;flex-direction:column;gap:6px}
.slider-wrap .lbl{display:flex;justify-content:space-between;font-size:.85rem;color:var(--muted);font-weight:600}
.slider-wrap .lbl b{color:var(--p)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:99px;
 background:linear-gradient(90deg,var(--p),var(--cy));outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;
 background:#fff;border:3px solid var(--p);cursor:pointer;box-shadow:var(--glow)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:3px solid var(--p);cursor:pointer}
.checks{display:flex;gap:16px;flex-wrap:wrap}
.chk{display:flex;align-items:center;gap:7px;font-size:.92rem;color:var(--muted);cursor:pointer;user-select:none;padding:4px 0}
.chk input{width:17px;height:17px;accent-color:var(--p);cursor:pointer}
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border:none;border-radius:12px;
 background:linear-gradient(135deg,var(--p),var(--p2));color:#fff;font-family:inherit;font-size:1rem;font-weight:700;
 cursor:pointer;box-shadow:0 8px 24px rgba(124,58,237,.35);flex:1 1 auto}
.btn:hover{filter:brightness(1.12);text-decoration:none;color:#fff}
.btn.sec{background:var(--panel2);color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn.sec:hover{border-color:var(--p);color:var(--ink)}
.btn.sm{padding:8px 16px;font-size:.88rem;flex:0 0 auto;border-radius:9px}
.hint{color:var(--dim);font-size:.86rem;margin-top:12px;text-align:center}
/* ---------- style list ---------- */
.style-list{display:grid;gap:10px;margin-top:6px;max-height:640px;overflow-y:auto;padding-inline-end:4px}
.style-list::-webkit-scrollbar{width:8px}
.style-list::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.srow{display:flex;align-items:center;gap:12px;background:#0d0d18;border:1px solid var(--line);
 border-radius:12px;padding:12px 14px;transition:.14s}
.srow:hover{border-color:var(--p)}
.srow .txt{flex:1;min-width:0;overflow-x:auto;white-space:nowrap;font-size:1.06rem;line-height:2;scrollbar-width:thin}
.srow .txt::-webkit-scrollbar{height:5px}
.srow .txt::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.srow .nm{font-size:.72rem;color:var(--dim);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:2px}
.copied{background:var(--lime)!important;color:#0a0a12!important;border-color:var(--lime)!important}
/* ---------- sections ---------- */
main section{padding:34px 0}
main section.alt{background:rgba(16,16,28,.6);border-block:1px solid var(--line)}
h2{font-size:1.6rem;font-weight:800;letter-spacing:-.4px;margin-bottom:14px;line-height:1.4}
h3{font-size:1.15rem;font-weight:700;margin:24px 0 8px}
p{margin-bottom:15px;color:#cfcfe4}
.prose{max-width:840px}
.prose a{text-decoration:underline;text-underline-offset:3px}
ul.dots,ol.nums{margin:0 0 18px 24px;padding:0;color:#cfcfe4}
ul.dots li,ol.nums li{margin-bottom:9px}
.center{text-align:center}
.note{background:rgba(168,85,247,.09);border-left:3px solid var(--p);border-radius:0 12px 12px 0;
 padding:14px 18px;margin:18px 0;color:#d6d6ec}
.note b{color:#fff}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.95rem}
th,td{border:1px solid var(--line);padding:11px 13px;text-align:left}
th{background:var(--panel);font-weight:700;color:#fff}
tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.tbl-wrap{overflow-x:auto}
.sample{font-size:1.15rem;line-height:2}
/* ---------- cards ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-top:18px}
.tool-link{display:flex;align-items:center;gap:11px;background:var(--panel);border:1px solid var(--line);
 border-radius:13px;padding:14px 16px;color:var(--ink);font-weight:600;font-size:.96rem;transition:.16s}
.tool-link:hover{text-decoration:none;border-color:var(--p);transform:translateY(-2px);box-shadow:0 10px 28px rgba(124,58,237,.22)}
.tool-link .e{font-size:1.2rem;flex-shrink:0}
.tool-link .ar{margin-left:auto;color:var(--dim)}
.cat{margin-bottom:32px}
.cat h2{display:flex;align-items:center;gap:11px;font-size:1.3rem}
.cat h2 .ic{width:36px;height:36px;border-radius:10px;background:var(--panel2);border:1px solid var(--line);
 display:inline-flex;align-items:center;justify-content:center;font-size:1rem}
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:20px}
.feat{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:22px}
.feat .e{font-size:1.6rem;display:block;margin-bottom:8px}
.feat h3{margin:0 0 6px;font-size:1.03rem}
.feat p{color:var(--muted);font-size:.93rem;margin:0}
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px;margin-top:20px}
.guide-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
 border-radius:15px;overflow:hidden;transition:.16s}
.guide-card:hover{text-decoration:none;border-color:var(--cy);transform:translateY(-2px)}
.guide-card .top{background:linear-gradient(135deg,var(--p2),var(--cy));padding:18px;font-size:1.8rem;text-align:center}
.guide-card .bd{padding:17px}
.guide-card h3{margin:0 0 6px;font-size:1.02rem;color:var(--ink)}
.guide-card p{margin:0;color:var(--muted);font-size:.91rem}
.related{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:20px;margin:26px 0}
.related h3{margin:0 0 12px;font-size:1.05rem}
.related .tool-grid{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;margin-top:0}
.steps{margin-top:18px}
.step{display:flex;gap:14px;margin-bottom:15px;align-items:flex-start}
.step .n{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--p),var(--p2));
 color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem}
.step p{margin:0;color:#cfcfe4}
.step p>b:first-child{display:block;color:#fff}
.step b{color:#fff}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:22px 0}
.toc h2{font-size:1.02rem;margin-bottom:10px}
.toc ol{margin:0 0 0 20px;padding:0}
.toc li{margin-bottom:5px}
.toc a{display:inline-block;padding:3px 0}
.cta{background:linear-gradient(135deg,rgba(168,85,247,.14),rgba(34,211,238,.08));border:1px solid var(--line);
 border-radius:15px;padding:22px;text-align:center;margin:26px 0}
.cta h3{margin:0 0 8px}
.cta p{margin:0 0 14px;color:var(--muted)}
.cta .btn{flex:0 0 auto;display:inline-flex}
/* ---------- faq ---------- */
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:13px;margin-bottom:10px;overflow:hidden}
.faq summary{padding:15px 18px;font-weight:700;cursor:pointer;list-style:none;display:flex;
 justify-content:space-between;align-items:center;gap:12px;font-size:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--p);font-size:1.4rem;font-weight:400;flex-shrink:0}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 18px 16px;color:var(--muted)}
.faq .a p:last-child{margin-bottom:0}
/* ---------- search ---------- */
.search-box{position:relative;margin:0 0 24px}
.search-box input{padding-left:44px;font-size:1rem;padding-top:13px;padding-bottom:13px}
.search-box::before{content:"⌕";position:absolute;left:16px;top:50%;transform:translateY(-50%);opacity:.6;font-size:1.3rem}
.empty{display:none;color:var(--muted);text-align:center;padding:22px}
.empty.show{display:block}
/* ---------- footer ---------- */
footer{background:#07070e;border-top:1px solid var(--line);padding:42px 0 22px;margin-top:46px;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:28px;margin-bottom:26px}
.f-about p{color:var(--dim);font-size:.9rem;margin-top:10px}
.f-h{color:#fff;font-size:.96rem;margin:0 0 10px;font-weight:700}
footer ul{list-style:none}
footer li{margin-bottom:6px}
footer a{color:var(--muted)}
footer li a{display:inline-block;padding:3px 0}
footer a:hover{color:var(--cy)}
.copy{border-top:1px solid var(--line);padding-top:18px;text-align:center;font-size:.86rem;color:var(--dim)}
.copy a{color:var(--dim);display:inline-block;padding:4px 2px}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
/* ---------- toast ---------- */
#toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);background:var(--lime);
 color:#0a0a12;font-weight:700;padding:11px 22px;border-radius:99px;opacity:0;pointer-events:none;transition:.22s;z-index:200}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
/* ---------- responsive ---------- */
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){
 body{font-size:16px}
 .menu-btn{display:block}
 .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg2);flex-direction:column;
  align-items:stretch;padding:12px 18px 18px;border-bottom:1px solid var(--line);gap:0}
 .nav-links.open{display:flex}
 .nav-links li{border-bottom:1px solid var(--line)}
 .nav-links li:last-child{border-bottom:none}
 .nav-links a{display:block;padding:12px 2px;font-size:1rem}
 .hero h1{font-size:1.75rem}
 .page-head h1{font-size:1.5rem}
 h2{font-size:1.3rem}
 .io{grid-template-columns:1fr}
 .tool{padding:17px;border-radius:15px}
 .btn{flex:1 1 100%}
 .btn.sm{flex:0 0 auto}
 table{font-size:.88rem}
 th,td{padding:8px 9px}
}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}.tool-grid{grid-template-columns:1fr}}