:root{
  --bg:#f6f7fb;--card:#fff;--ink:#141627;--muted:#6b7089;--line:#e4e6f0;
  --pri:#4f46e5;--pri-2:#7c3aed;--pri-soft:#eef0ff;--ok:#16a34a;--err:#dc2626;--warn:#b45309;
  --r:12px;--shadow:0 1px 2px rgba(20,22,39,.05),0 4px 16px rgba(20,22,39,.05);
  --mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font:15px/1.55 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}
a{color:var(--pri);text-decoration:none}a:hover{text-decoration:underline}
h1 code{font-size:15px;vertical-align:middle}
h1{font-size:26px;margin:0 0 14px;letter-spacing:-.02em}h2{font-size:18px;margin:0}h3{font-size:16px;margin:0 0 12px}
code{font-family:var(--mono);font-size:.85em;background:var(--pri-soft);color:var(--pri);padding:1px 6px;border-radius:5px}
.muted{color:var(--muted)}.tiny{font-size:12.5px}.center{text-align:center}.right{text-align:right}.nowrap{white-space:nowrap}
.mono{font-family:var(--mono);font-size:13px}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:16px;padding:12px 24px;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.brand{font-weight:800;font-size:18px;color:var(--ink);display:flex;align-items:center;gap:8px}.brand:hover{text-decoration:none}
.logo{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--pri),var(--pri-2));color:#fff;font-size:15px}
.nav{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav a{color:var(--ink);font-weight:500}.nav a.on{color:var(--pri)}.nav a.muted{color:var(--muted)}
.credits{background:var(--pri-soft);color:var(--pri);padding:4px 10px;border-radius:99px;font-size:13px}
.menu-btn{display:none;margin-left:auto;background:none;border:0;font-size:22px;cursor:pointer}
.subnav{display:flex;gap:4px;padding:8px 24px;background:#fff;border-bottom:1px solid var(--line);overflow-x:auto}
.subnav a{padding:6px 12px;border-radius:8px;color:var(--muted);font-weight:500;white-space:nowrap}.subnav a.on{background:var(--pri-soft);color:var(--pri)}.subnav a:hover{text-decoration:none;color:var(--ink)}

main{flex:1}
.wrap{max-width:1180px;margin:0 auto;padding:28px 24px;width:100%}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:24px}

/* buttons & inputs */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;border:1px solid transparent;background:var(--pri);color:#fff;font:600 14px Inter,sans-serif;cursor:pointer;transition:.15s;white-space:nowrap}
.btn:hover{background:#4338ca;text-decoration:none}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{border-color:var(--pri);color:var(--pri)}
.btn.danger{background:#fff;color:var(--err);border-color:#f5c2c2}.btn.danger:hover{background:var(--err);color:#fff}
.btn.ai{background:linear-gradient(135deg,var(--pri),var(--pri-2))}.btn.ai small{opacity:.8;font-weight:500}
.btn.sm{padding:6px 11px;font-size:13px;border-radius:8px}.btn.lg{padding:14px 24px;font-size:16px}.btn.block{width:100%}
.btn:disabled{opacity:.6;cursor:wait}
.btn.loading{animation:pulse 1.2s infinite}@keyframes pulse{50%{opacity:.65}}
.icon-btn{background:none;border:1px solid var(--line);border-radius:8px;padding:5px 8px;cursor:pointer}
.link{background:none;border:0;color:var(--pri);cursor:pointer;font:inherit;padding:0}
input,select,textarea{font:inherit;color:inherit;width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;transition:border .15s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--pri);box-shadow:0 0 0 3px var(--pri-soft)}
input[type=checkbox]{width:auto}
label{display:block;font-weight:600;font-size:13.5px}label>input,label>select,label>textarea{margin-top:6px;font-weight:400}
label small{font-weight:400;color:var(--muted)}
.check{display:flex;align-items:center;gap:8px;font-weight:500}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow);margin-bottom:18px}
.alert{padding:11px 14px;border-radius:10px;margin-bottom:16px;font-size:14px;background:#ecfdf3;color:#166534;border:1px solid #bbf7d0}
.alert.err{background:#fef2f2;color:#991b1b;border-color:#fecaca}.alert.info{background:var(--pri-soft);color:#3730a3;border-color:#c7d2fe}
.tag{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:99px;background:#f1f2f7;color:var(--muted);vertical-align:middle}
.tag.ai{background:#f3e8ff;color:#7e22ce}

/* landing */
.landing{max-width:1100px;margin:0 auto;padding:0 24px;width:100%}
.hero{text-align:center;padding:80px 0 50px}
.hero h1{font-size:clamp(32px,5.5vw,56px);line-height:1.08;letter-spacing:-.035em;max-width:880px;margin:18px auto}
.hero em{font-style:normal;background:linear-gradient(135deg,var(--pri),var(--pri-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:18px;color:var(--muted);max-width:700px;margin:0 auto 30px}
.pill{display:inline-block;padding:5px 14px;border-radius:99px;background:var(--pri-soft);color:var(--pri);font-weight:600;font-size:13px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;padding:20px 0 50px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px}.feat b{font-size:16px}.feat p{color:var(--muted);margin:8px 0 0}
.how{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px;margin-bottom:60px;text-align:center}
.how ol{text-align:left;max-width:560px;margin:20px auto 28px;padding-left:22px}.how li{margin:10px 0}

/* auth */
.auth{display:grid;place-items:center;padding:50px 16px}
.auth-card{width:100%;max-width:420px;display:flex;flex-direction:column;gap:14px}.auth-card h1{margin:0}.auth-card p{margin:0}

/* builder */
.builder{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:20px;padding:20px 24px;max-width:1500px;margin:0 auto;width:100%;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:20px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.preset-bar{display:flex;gap:6px;align-items:center}.preset-bar select{width:auto;max-width:180px;padding:6px 10px;font-size:13px}
.field{margin-bottom:18px}
.flabel{margin-bottom:7px}.flabel small{display:block;margin-top:2px}
.req{color:var(--err)}
.other{margin-top:8px;border-style:dashed}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{position:relative;font-weight:500;cursor:pointer}
.chip input{position:absolute;opacity:0;pointer-events:none}
.chip span{display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:99px;font-size:13px;transition:.12s;user-select:none}
.chip:hover span{border-color:var(--pri)}
.chip input:checked+span{background:var(--pri);border-color:var(--pri);color:#fff}
.chip input:focus-visible+span{box-shadow:0 0 0 3px var(--pri-soft)}
.out-panel{position:sticky;top:76px}
.tabs{display:flex;background:#f1f2f7;border-radius:9px;padding:3px}
.tab{border:0;background:none;padding:6px 12px;border-radius:7px;font:600 13px Inter,sans-serif;color:var(--muted);cursor:pointer}
.tab.on{background:#fff;color:var(--ink);box-shadow:var(--shadow)}.tab:disabled{opacity:.45;cursor:not-allowed}
.out{font-family:var(--mono);font-size:13px;line-height:1.6;height:calc(100vh - 330px);min-height:360px;resize:vertical;background:#fbfbfe}
.missing{font-size:13px;color:var(--warn);background:#fffbeb;border:1px solid #fde68a;padding:7px 11px;border-radius:8px;margin-bottom:10px}
.out-meta{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);margin:8px 0 12px}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:11px 18px;border-radius:10px;font-size:14px;z-index:50;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.toast.bad{background:var(--err)}

/* history */
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}.page-head h1{margin:0}
.search{display:flex;gap:6px}.search input{width:240px}
.hist-item{padding:0}.hist-item summary{padding:16px 20px;cursor:pointer;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.hist-item summary .muted{margin-left:auto;font-size:13px}
.hist-body{padding:0 20px 20px}.hist-body h4{margin:12px 0 6px;font-size:13px;color:var(--muted)}
pre.code{font-family:var(--mono);font-size:12.5px;background:#fbfbfe;border:1px solid var(--line);border-radius:9px;padding:14px;white-space:pre-wrap;max-height:380px;overflow:auto;margin:0 0 12px}
.empty{text-align:center;padding:40px}
.pager{display:flex;gap:6px;justify-content:center}.pager a{padding:6px 12px;border:1px solid var(--line);border-radius:8px;background:#fff}.pager a.on{background:var(--pri);color:#fff;border-color:var(--pri)}

/* admin */
.table-wrap{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:8px 10px;border-bottom:1px solid var(--line)}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr.off td{opacity:.45}
.tbl input,.tbl textarea{padding:6px 8px;font-size:13px}.tbl textarea{resize:vertical;min-width:220px}
.mini{width:70px!important}.mid{width:130px!important}
.row-actions{text-align:right;white-space:nowrap}.row-actions form,.row-actions details{display:inline-block;margin:0 0 0 4px;vertical-align:middle}
form.inline{display:flex;gap:5px;align-items:center;margin:0}form.inline input[type=password]{width:140px}
.pw summary{list-style:none}.pw summary::-webkit-details-marker{display:none}.pw[open] form{margin-top:6px}
.grid-form{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;align-items:end;margin-top:12px}.grid-form .span2{grid-column:span 2}
.stack{display:flex;flex-direction:column;gap:12px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:18px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px}.kpi span{font-size:12.5px;color:var(--muted)}.kpi b{display:block;font-size:24px;margin-top:4px}
.tpl-edit{display:grid;grid-template-columns:1fr 280px;gap:18px;align-items:start}
.help{position:sticky;top:76px}.ph{font-family:var(--mono);font-size:12px;background:var(--pri-soft);color:var(--pri);border:0;border-radius:6px;padding:3px 7px;margin:3px 6px 3px 0;cursor:pointer}

@media (max-width:960px){
  .builder{grid-template-columns:1fr}.out-panel{position:static}.out{height:420px}
  .two-col,.tpl-edit{grid-template-columns:1fr}.help{position:static}
  .grid-form{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .topbar{padding:10px 16px;flex-wrap:wrap}.menu-btn{display:block}
  .nav{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:12px;padding:8px 0}
  .nav-open .nav{display:flex}
  .wrap,.builder,.landing{padding-left:16px;padding-right:16px}
  .grid-form{grid-template-columns:1fr}.grid-form .span2{grid-column:auto}
  .search input{width:100%}.search{width:100%}
  .preset-bar{flex-wrap:wrap}
  .hero{padding:50px 0 30px}
}

/* categories */
.pick-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:14px}.pick-head h1{margin:0}
.pick-head input{max-width:360px}
.recent{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:16px;font-size:14px}
.chip-link{padding:5px 12px;border:1px solid var(--line);border-radius:99px;background:#fff;color:var(--ink)}.chip-link:hover{border-color:var(--pri);color:var(--pri);text-decoration:none}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.cat-card{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;color:var(--ink);box-shadow:var(--shadow);transition:.15s}
.cat-card:hover{border-color:var(--pri);transform:translateY(-2px);text-decoration:none;box-shadow:0 8px 24px rgba(79,70,229,.12)}
.cat-card b{font-size:16px}.cat-card small{color:var(--muted);font-size:13px;line-height:1.45}
.cat-icon{font-size:28px;line-height:1}
.cat-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:-4px 0 14px;padding-bottom:12px;border-bottom:1px solid var(--line);font-size:14px}
.cat-now{font-weight:700}
.cat-emoji{margin-right:6px}
.search select{width:auto}

/* ===== v3 ===== */
.h2{font-size:18px;margin:0}
.examples,.seo-intro{grid-column:1/-1}
.seo-intro{color:var(--muted);font-size:14px;max-width:900px}.seo-intro h2{color:var(--ink);font-size:16px;margin:8px 0}
.ex-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.ex-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow)}
.ex-card p{margin:0;color:var(--muted);font-size:13.5px;flex:1;white-space:pre-line;overflow-wrap:anywhere}
.examples h2{font-size:18px;margin:10px 0 12px}
.chip-link.on{background:var(--pri);color:#fff;border-color:var(--pri)}
.tag.ok{background:#dcfce7;color:#166534}

/* quality */
.quality{border:1px solid var(--line);border-radius:10px;margin:0 0 12px;background:#fcfcff}
.quality summary{display:flex;align-items:center;gap:10px;padding:8px 12px;cursor:pointer;list-style:none}
.quality summary::-webkit-details-marker{display:none}
.q-badge{display:grid;place-items:center;min-width:38px;height:38px;border-radius:50%;font-weight:800;color:#fff;background:#94a3b8;font-size:14px}
.q-badge.g{background:#16a34a}.q-badge.ok{background:#4f46e5}.q-badge.m{background:#d97706}.q-badge.b{background:#dc2626}
.q-list{list-style:none;margin:0;padding:4px 14px 6px;font-size:13.5px;columns:2;column-gap:20px}
.q-list li{padding:3px 0;break-inside:avoid}
.q-list li.ok::before{content:"✓ ";color:#16a34a;font-weight:700}
.q-list li.bad::before{content:"✗ ";color:#dc2626;font-weight:700}
.q-list li.tip::before{content:"＋ ";color:#d97706;font-weight:700}
.quality .tiny{padding:0 14px 10px;margin:0}

/* menus & buttons */
.menu{position:relative;display:inline-block}
.menu summary{list-style:none}.menu summary::-webkit-details-marker{display:none}
.menu-list{position:absolute;z-index:30;bottom:calc(100% + 6px);left:0;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.12);padding:6px;min-width:190px;display:flex;flex-direction:column}
.hist .menu-list{bottom:auto;top:calc(100% + 6px)}
.menu-list button{background:none;border:0;text-align:left;padding:8px 10px;border-radius:7px;font:500 14px Inter,sans-serif;cursor:pointer}
.menu-list button:hover{background:var(--pri-soft);color:var(--pri)}
.ai-actions{margin-top:8px}
.btn.ai-ghost{background:#fff;color:#7c3aed;border-color:#ddd6fe}.btn.ai-ghost:hover{background:#f5f3ff}.btn.ai-ghost small{opacity:.75;font-weight:500}
.btn.wa{background:#25d366}.btn.wa:hover{background:#1da851}
.mini-sel{width:auto;padding:5px 8px;font-size:13px}

/* modal */
.modal{position:fixed;inset:0;z-index:60;background:rgba(15,23,42,.45);display:grid;place-items:center;padding:16px}
.modal[hidden]{display:none}
.modal-box{background:#fff;border-radius:16px;padding:22px;width:100%;max-width:560px;box-shadow:0 20px 60px rgba(0,0,0,.25);display:flex;flex-direction:column;gap:12px;max-height:90vh;overflow:auto}
.modal-box h3{margin:0}
#qForm{display:flex;flex-direction:column;gap:12px}

/* share page */
.share-page{max-width:900px;margin:0 auto}
pre.code.big{max-height:none;font-size:13.5px;padding:18px}
.share-tabs{display:inline-flex;margin-bottom:10px}
.cta-card{margin-top:28px;text-align:center}.cta-card p{margin:6px 0 14px}

/* library */
.lib{display:grid;grid-template-columns:230px 1fr;gap:20px;align-items:start}
.lib-side{position:sticky;top:76px;padding:12px;display:flex;flex-direction:column;gap:2px}
.side-link,.side-folder a{display:flex;justify-content:space-between;gap:8px;padding:7px 10px;border-radius:8px;color:var(--ink);font-size:14px}
.side-link:hover,.side-folder a:hover{background:var(--pri-soft);text-decoration:none}
.side-link.on,.side-folder.on a{background:var(--pri-soft);color:var(--pri);font-weight:600}
.side-link small,.side-folder small{color:var(--muted)}
.side-title{display:flex;justify-content:space-between;align-items:center;margin:12px 4px 4px;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.side-folder{display:flex;align-items:center}.side-folder a{flex:1;min-width:0}
.f-acts{display:none;gap:4px}.side-folder:hover .f-acts{display:flex}
.fav{background:none;border:0;font-size:18px;cursor:pointer;color:#cbd5e1;padding:0 2px;line-height:1}.fav.on{color:#f59e0b}
.vers-panel{margin-top:14px;border-top:1px dashed var(--line);padding-top:10px}
.ver{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px}
.ver-head{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.ver-acts{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.ver-body{margin-top:10px}
pre.diff span{display:block}pre.diff .add,span.add{background:#dcfce7;color:#14532d}pre.diff .del,span.del{background:#fee2e2;color:#7f1d1d}
.grid-form .span4{grid-column:1/-1}
.cond-sel{min-height:120px}

@media (max-width:960px){ .lib{grid-template-columns:1fr} .lib-side{position:static} .q-list{columns:1} }
.tag:empty{display:none}
.ex-card p{display:-webkit-box;-webkit-line-clamp:8;-webkit-box-orient:vertical;overflow:hidden}
.jump-out{display:none}
@media (max-width:960px){.jump-out{display:block;position:fixed;bottom:16px;right:16px;z-index:40;background:var(--pri);color:#fff;padding:10px 16px;border-radius:99px;font-weight:600;box-shadow:0 8px 20px rgba(79,70,229,.35)}.jump-out:hover{text-decoration:none}}

/* split hero */
.hero-split{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center;text-align:left;padding:56px 0 40px}
.hero-split h1{margin:18px 0;max-width:none;font-size:clamp(30px,4vw,48px)}
.hero-split .lead{margin:0 0 28px;max-width:none}
.hero-split .cta{justify-content:flex-start}
.hero-media img{display:block;width:100%;height:auto;border-radius:18px;box-shadow:0 20px 50px rgba(20,22,39,.18);border:1px solid var(--line)}
@media (max-width:960px){.hero-split{grid-template-columns:1fr;text-align:center;gap:28px;padding:40px 0 24px}.hero-split .cta{justify-content:center}}