:root{--bg:#f8fafc;--surface:#fff;--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--primary:#4f46e5;--primary-hover:#4338ca;--primary-soft:#eef2ff;--good:#16a34a;--bad:#dc2626;--code-bg:#f1f5f9;--radius:12px;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--surface:#131a2e;--text:#e5e9f5;--muted:#94a3b8;--border:#263050;--primary:#818cf8;--primary-hover:#a5b4fc;--primary-soft:#1c2347;--code-bg:#1b2440}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}
code,pre,textarea.output{font-family:var(--mono)}
code{background:var(--code-bg);padding:.1em .35em;border-radius:5px;font-size:.9em;word-break:break-all}
pre{background:var(--code-bg);padding:12px 14px;border-radius:8px;overflow-x:auto;font-size:.9rem;margin:0}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;background:var(--primary);color:#fff;padding:8px 12px;z-index:10}.skip:focus{left:8px}
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--text);font-size:1.1rem}.brand:hover{text-decoration:none}
.site-header nav{display:flex;flex-wrap:wrap;gap:2px}
.site-header nav a{color:var(--muted);padding:6px 10px;border-radius:8px;font-size:.95rem}
.site-header nav a:hover,.site-header nav a.active{background:var(--primary-soft);color:var(--primary);text-decoration:none}
main{padding-bottom:40px}
.hero{padding:28px 0 12px}.hero h1{margin:0 0 6px;font-size:clamp(1.6rem,4vw,2.3rem);line-height:1.2;letter-spacing:-.02em}
.lead{color:var(--muted);margin:0;font-size:1.05rem}
.tabs{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}
.tabs a{padding:6px 14px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text);font-size:.92rem;font-weight:500}
.tabs a:hover{border-color:var(--primary);text-decoration:none}
.tabs a.active{background:var(--primary);border-color:var(--primary);color:#fff}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:16px}
.card h3{margin:0 0 8px;font-size:1rem}
.generator{padding:20px}
.output-wrap{position:relative}
textarea.output{width:100%;resize:vertical;border:1px solid var(--border);border-radius:10px;background:var(--code-bg);color:var(--text);padding:14px 16px;font-size:1.15rem;line-height:1.6;min-height:3.5rem}
textarea.output:focus{outline:2px solid var(--primary);outline-offset:1px}
.status{min-height:1.4em;margin:6px 0 0;font-size:.9rem;color:var(--good)}.status.error{color:var(--bad)}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:9px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;font-size:.95rem;font-weight:600;cursor:pointer}
.btn:hover{border-color:var(--primary);text-decoration:none}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-hover)}
.btn.small{padding:3px 10px;font-size:.8rem;font-weight:500;border-radius:7px}
.btn:disabled{opacity:.6;cursor:wait}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.options{border-top:1px solid var(--border);padding-top:12px}.options summary{cursor:pointer;font-weight:600}
.option-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px 18px;margin-top:12px;align-items:end}
label{display:flex;flex-direction:column;gap:4px;font-size:.88rem;font-weight:600;color:var(--muted)}
label.check{flex-direction:row;align-items:center;gap:8px;color:var(--text);font-weight:500}
input[type=text],input[type=number],select{font:inherit;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);width:100%}
.hint{color:var(--muted);font-size:.85rem;margin:8px 0 0}
.name-form{display:grid;gap:12px;margin-bottom:16px}.name-form .btn{justify-self:start}.name-form .hint{margin:0}
.api-box{margin-top:16px;padding:12px 14px;background:var(--primary-soft);border-radius:10px}
.api-head{display:flex;gap:8px;align-items:center;margin-bottom:6px;flex-wrap:wrap}
.api-url{display:block;background:transparent;padding:0;word-break:break-all;font-size:.85rem}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px;margin-top:28px}
@media (max-width:820px){.content-grid{grid-template-columns:1fr}}
.prose h2{margin:1.6em 0 .4em;font-size:1.4rem;letter-spacing:-.01em}.prose h2:first-child{margin-top:0}
.prose h3{margin:1.4em 0 .3em}
.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.25em 0}
.prose p{margin:.7em 0}
pre.layout{white-space:pre-wrap;word-break:break-word}
details.faq{border:1px solid var(--border);border-radius:10px;padding:10px 14px;margin:8px 0;background:var(--surface)}
details.faq summary{cursor:pointer;font-weight:600}details.faq p{margin:.6em 0 .2em}
.side .card{padding:14px 16px}
ul.plain{list-style:none;padding:0;margin:0}ul.plain li{margin:6px 0;font-size:.93rem}
table{border-collapse:collapse;width:100%}
table.data th,table.data td{border:1px solid var(--border);padding:8px 10px;text-align:left;font-size:.93rem;vertical-align:top}
table.data th{background:var(--code-bg)}
table.kv{margin:12px 0}table.kv th{width:230px;text-align:left;color:var(--muted);font-weight:600;font-size:.88rem;vertical-align:top;padding:7px 10px 7px 0;border-bottom:1px solid var(--border)}
table.kv td{padding:7px 0;border-bottom:1px solid var(--border);word-break:break-all}
.copy-cell{text-align:right;width:70px}
.muted{color:var(--muted)}
.row{display:flex;gap:8px}.row input{flex:1;font-family:var(--mono);font-size:1.05rem;padding:10px 12px}
.decode-form label{margin-bottom:6px}
.result h2{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:1.1rem;margin:0 0 10px}
.badges{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:.82rem;font-weight:600}
.badge.good{background:#dcfce7;color:#166534}.badge.bad{background:#fee2e2;color:#991b1b}
.segments{display:flex;gap:4px;margin:6px 0 14px;flex-wrap:wrap}
.segment{background:var(--code-bg);border:1px solid var(--border);border-radius:8px;padding:6px 8px;text-align:center;min-width:64px;overflow:hidden}
.segment code{display:block;background:transparent;padding:0;font-size:.85rem}.segment small{color:var(--muted);font-size:.7rem}
.note{background:var(--primary-soft);border-radius:8px;padding:10px 12px;font-size:.93rem}
.contact-frame{width:100%;height:820px;border:0;margin-top:12px}
.site-footer{border-top:1px solid var(--border);background:var(--surface);padding:24px 0;margin-top:20px;font-size:.9rem}
.footer-links{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0 0 10px}
.site-footer .muted{margin:0}