@import url("https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500;12..96,600;12..96,700&family=Fragment+Mono&display=swap");
/* Latch: cold steel, one mint accent, rounded cards, a search-first page */
:root{
  --bg:#0a0d10;--s1:#10151a;--s2:#151c22;--s3:#1c252d;--line:#1e272f;--line2:#2b3741;
  --ink:#e9f1f4;--dim:#8c9aa3;--faint:#5d6b74;
  --acc:#3ee6c1;--acc2:#6cf0d2;--accbg:rgba(62,230,193,.08);
  --ok:#3ee6c1;--warn:#f2c14e;--bad:#ff6b7a;--r:16px
}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--bg)}
body{background:var(--bg);color:var(--ink);font:16px/1.6 "Bricolage Grotesque",system-ui,sans-serif;min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased;overflow-x:hidden}
main{flex:1}
a{color:inherit}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.mono{font-family:"Fragment Mono",monospace}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
h1,h2,h3{font-weight:700;letter-spacing:-.02em;word-spacing:.04em;line-height:1.04}
.tag{font:12px "Fragment Mono",monospace;text-transform:uppercase;letter-spacing:.06em;color:var(--faint)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;font:600 15.5px "Bricolage Grotesque",sans-serif;cursor:pointer;text-decoration:none;white-space:nowrap;transition:background .15s,border-color .15s}
.btn-acc{background:var(--acc);color:#04201a}.btn-acc:hover{background:var(--acc2)}
.btn-ghost{background:transparent;border-color:var(--line2);color:var(--ink)}.btn-ghost:hover{border-color:var(--acc)}
.btn:disabled{opacity:.4;cursor:not-allowed}

.top .wrap{display:flex;align-items:center;gap:30px;height:76px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 21px "Bricolage Grotesque",sans-serif}
.brand img{height:30px;width:auto;display:block}
.top nav{display:flex;gap:4px;margin-left:auto}.top nav a{color:var(--dim);text-decoration:none;font-size:15px;padding:8px 14px;border-radius:999px}.top nav a:hover{color:var(--ink);background:var(--s2)}
.top .right{display:flex;gap:10px;align-items:center}
@media(max-width:760px){.top nav{display:none}.top .right{margin-left:auto}}

/* search-first hero */
.hero{text-align:center;padding:90px 0 40px;max-width:860px;margin:0 auto}
.hero h1{font-size:clamp(44px,6.4vw,84px)}
.hero h1 em{font-style:normal;color:var(--acc)}
.hero .sub{color:var(--dim);font-size:19px;margin:22px auto 0;max-width:34em}
.search{display:flex;gap:8px;margin:36px auto 0;max-width:720px;padding:8px;border:1px solid var(--line2);border-radius:999px;background:var(--s1)}
.search input{flex:1;min-width:0;background:none;border:0;outline:none;color:var(--ink);font:15px "Fragment Mono",monospace;padding:0 16px}
.search:focus-within{border-color:var(--acc)}
.hero .hint{color:var(--faint);font-size:14px;margin-top:14px}
.ca{display:inline-flex;gap:10px;align-items:center;margin-top:22px;padding:9px 16px;border:1px solid var(--line2);border-radius:999px;font:12px "Fragment Mono",monospace;cursor:pointer;color:var(--dim)}.ca span{color:var(--acc)}
#result{max-width:980px;margin:30px auto 0;text-align:left}
.rhead{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:14px}
.rhead h3{font-size:26px}
.rsum{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:14px}
.rsum div{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px}
.rsum b{display:block;font:22px "Fragment Mono",monospace;margin-top:6px}

section{padding:100px 0 0}
.sh{text-align:center;max-width:720px;margin:0 auto 40px}
.sh h2{font-size:clamp(32px,4.2vw,52px)}
.sh p{color:var(--dim);font-size:17px;margin-top:14px}

/* lock cards */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:960px){.grid{grid-template-columns:1fr 1fr}}@media(max-width:620px){.grid{grid-template-columns:1fr}}
.lk{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:14px}
.lk .t1{display:flex;align-items:center;gap:12px}
.lk .ring{width:54px;height:54px;flex:none}
.lk .t1 b{font-size:19px}.lk .t1 small{display:block;color:var(--faint);font:12px "Fragment Mono",monospace}
.lk .kind{margin-left:auto;font:11.5px "Fragment Mono",monospace;color:var(--acc);border:1px solid var(--line2);border-radius:999px;padding:4px 10px;text-transform:uppercase}
.lk .kv{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lk .kv span{display:block;font:11px "Fragment Mono",monospace;color:var(--faint);text-transform:uppercase}
.lk .kv b{font:14.5px "Fragment Mono",monospace}
.lk .note{color:var(--dim);font-size:14px}
.lk .acts{display:flex;gap:8px;flex-wrap:wrap}.lk .acts .btn{height:36px;font-size:14px;padding:0 14px}
.empty{color:var(--dim);padding:40px 20px;text-align:center;border:1px dashed var(--line2);border-radius:var(--r);grid-column:1/-1}

/* two kinds, side by side */
.kinds{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.kinds>div{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:28px}
.kinds h3{font-size:26px;margin:10px 0}
.kinds p{color:var(--dim)}
.kinds svg{display:block;width:100%;height:auto;margin-top:22px}
@media(max-width:860px){.kinds{grid-template-columns:1fr}}

.rules{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.rules div{border-top:2px solid var(--acc);padding-top:16px}
.rules b{display:block;font-size:18px;margin-bottom:6px}.rules p{color:var(--dim);font-size:14.5px}
@media(max-width:860px){.rules{grid-template-columns:1fr 1fr}}

.faq{max-width:820px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;padding:22px 0;font-size:18px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font:20px "Fragment Mono",monospace;color:var(--acc)}
.faq details[open] summary:after{content:"−"}
.faq details p{color:var(--dim);padding-bottom:22px}

.final{margin-top:120px;text-align:center;padding:90px 28px;background:radial-gradient(700px 260px at 50% 0%,rgba(62,230,193,.12),transparent 70%)}
.final h2{font-size:clamp(34px,4.6vw,58px);margin-bottom:28px}

footer{background:#000;padding:42px 0}
footer .wrap{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
footer .cols{display:flex;gap:64px;flex-wrap:wrap}
footer .col b{display:block;font:12px "Fragment Mono",monospace;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);margin-bottom:12px}
footer .col a{display:block;color:#b8c4ca;text-decoration:none;font-size:15px;margin:6px 0}footer .col a:hover{color:var(--ink)}
footer .note{color:var(--faint);font-size:13.5px;max-width:330px;margin-top:14px}

/* app */
.tabs{display:flex;gap:6px;justify-content:center;margin:40px 0 26px;padding:6px;border:1px solid var(--line);border-radius:999px;width:max-content;margin-left:auto;margin-right:auto;background:var(--s1)}
.tabs button{height:40px;padding:0 20px;border:0;border-radius:999px;background:none;color:var(--dim);font:600 15px "Bricolage Grotesque",sans-serif;cursor:pointer}
.tabs button.on{background:var(--acc);color:#04201a}
.panel{max-width:640px;margin:0 auto 90px;background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:26px}
.panel.wide{max-width:1180px;background:none;border:0;padding:0}
.fld{margin-top:16px}.fld:first-child{margin-top:0}
.fld label{display:flex;justify-content:space-between;font:12px "Fragment Mono",monospace;text-transform:uppercase;letter-spacing:.05em;color:var(--faint);margin-bottom:8px}
.fld label button{background:none;border:0;color:var(--acc);cursor:pointer;font:inherit}
.fld input,.fld select{width:100%;background:var(--bg);border:1px solid var(--line2);border-radius:12px;color:var(--ink);padding:13px 15px;font-size:15.5px;outline:none}
.fld input:focus{border-color:var(--acc)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.seg{display:flex;gap:6px}
.seg button{flex:1;height:44px;border:1px solid var(--line2);border-radius:12px;background:var(--bg);color:var(--dim);font:600 15px "Bricolage Grotesque",sans-serif;cursor:pointer}
.seg button.on{border-color:var(--acc);color:var(--ink);background:var(--accbg)}
.info{margin-top:8px;font:13px "Fragment Mono",monospace;color:var(--dim)}
.preview{margin-top:18px;padding:14px 16px;border:1px dashed var(--line2);border-radius:12px;font:13px "Fragment Mono",monospace;color:var(--dim);line-height:1.8}
.preview b{color:var(--ink);font-weight:400}
.big{width:100%;margin-top:18px;height:52px}
.step{margin-top:8px;font:13px "Fragment Mono",monospace;padding:10px 14px;border-left:2px solid var(--line2);background:var(--bg);border-radius:0 10px 10px 0}.step.ok{color:var(--ok);border-color:var(--ok)}.step.bad{color:var(--bad);border-color:var(--bad)}.step.run{color:var(--dim)}
.step a{color:var(--acc)}
.pos{display:grid;gap:8px;max-height:280px;overflow:auto}
.pos button{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border:1px solid var(--line2);border-radius:12px;background:var(--bg);color:var(--ink);font:14px "Fragment Mono",monospace;cursor:pointer;text-align:left}
.pos button.on{border-color:var(--acc);background:var(--accbg)}
.banner{max-width:640px;margin:26px auto 0;border:1px solid var(--acc);color:var(--acc);border-radius:12px;padding:12px 16px;font-size:14.5px;background:var(--accbg)}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.72);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}.modal.open{display:flex}
.modal .card{width:100%;max-width:380px;padding:18px;background:var(--s1);border:1px solid var(--line);border-radius:var(--r)}
.wopt{display:flex;align-items:center;gap:12px;width:100%;padding:12px;border:1px solid var(--line2);border-radius:12px;background:var(--s2);color:var(--ink);font:600 15px "Bricolage Grotesque",sans-serif;cursor:pointer;margin-top:8px}.wopt:hover{border-color:var(--acc)}.wopt img{width:28px;height:28px;border-radius:6px}
.toast{position:fixed;right:24px;bottom:24px;transform:translateY(16px);opacity:0;background:var(--s2);border:1px solid var(--line2);color:var(--ink);padding:12px 16px;border-radius:12px;font-size:14.5px;transition:.25s;z-index:60;max-width:min(440px,90vw)}
.toast.show{opacity:1;transform:none}.toast.bad{border-color:var(--bad);color:var(--bad)}

.docs{max-width:800px;margin:60px auto 100px}
.docs h1{font-size:56px}.docs h2{font-size:26px;margin:46px 0 10px}
.docs p,.docs li{color:#c0ccd1;margin:10px 0}.docs ul{padding-left:20px}
.docs code{font-family:"Fragment Mono",monospace;font-size:13px;color:var(--acc)}
.docs table{width:100%;border-collapse:collapse;margin-top:12px;font-size:15px}.docs td{border-bottom:1px solid var(--line);padding:11px 4px;color:#c0ccd1;vertical-align:top}.docs td:first-child{color:var(--ink);width:36%}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}