:root{
  --bg:#f1f3f8; --panel:#ffffff; --ink:#0f172a; --muted:#5b6478; --line:#e3e7ef;
  --accent:#4f46e5; --accent-2:#6366f1; --accent-soft:#eef0ff; --danger:#dc2626;
  --top:56px; --toolsW:76px; --pagesW:176px; --propsW:272px;
  --radius:12px; --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color:var(--ink);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--bg);overflow:hidden;-webkit-tap-highlight-color:transparent}
body.no-doc{overflow:auto}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
button{font:inherit;color:inherit;cursor:pointer}
button:disabled{opacity:.4;cursor:default}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px;z-index:100}
.skip:focus{left:8px}
[hidden]{display:none!important}

/* top bar */
.topbar{position:fixed;inset:0 0 auto 0;height:var(--top);display:flex;align-items:center;gap:12px;padding:0 14px;padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right));background:#0f172a;color:#fff;z-index:30}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:-.01em;font-size:17px;white-space:nowrap}
.logo{width:26px;height:26px;stroke:none}
.docname{flex:1;min-width:0;color:#cbd5e1;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.actions{display:flex;align-items:center;gap:6px}
.sep{width:1px;height:24px;background:#334155;margin:0 4px}
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid transparent;border-radius:10px;padding:8px 12px;background:#1e293b;color:#fff;font-weight:600;font-size:14px;line-height:1}
.btn.ghost{background:transparent;border-color:#334155}
.btn.ghost:hover{background:#1e293b}
.btn.primary{background:var(--accent);border-color:var(--accent)}
.btn.primary:hover{background:#4338ca}
.btn.small{padding:6px 9px;font-size:12.5px;background:var(--accent-soft);color:var(--accent);border-radius:8px}
.btn.big{padding:13px 22px;font-size:16px;border-radius:12px}
.icon-btn{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:10px;border:0;background:transparent;color:inherit}
.icon-btn:hover:not(:disabled){background:rgba(148,163,184,.18)}
body.no-doc .doc-only{display:none}
.mobile-only{display:none!important}

/* landing */
/* landing: see bottom of file */

/* editor layout */
.editor{position:fixed;inset:var(--top) 0 0 0;display:grid;grid-template-columns:var(--toolsW) var(--pagesW) 1fr var(--propsW);grid-template-rows:1fr;}
.tools{grid-column:1;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 6px;overflow-y:auto}
.tool{display:flex;flex-direction:column;align-items:center;gap:3px;width:64px;padding:8px 2px;border:0;border-radius:10px;background:transparent;color:#334155;font-size:11px;font-weight:600}
.tool svg{width:22px;height:22px}
.tool:hover{background:#f1f5f9}
.tool.active{background:var(--accent-soft);color:var(--accent)}
.pages-panel{grid-column:2;background:#f8fafc;border-right:1px solid var(--line);overflow-y:auto;padding:10px}
.panel-head{display:flex;align-items:center;gap:8px;justify-content:space-between;margin-bottom:8px}
.panel-head h2{font-size:13px;margin:0;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.thumbs{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.thumb{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px}
.thumb .tcanvas{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.18);border:2px solid transparent;border-radius:3px;cursor:pointer;max-width:132px;display:block}
.thumb.current .tcanvas{border-color:var(--accent)}
.thumb .tnum{font-size:12px;color:var(--muted)}
.thumb .tops{display:flex;gap:2px}
.thumb .tops button{width:28px;height:28px;border:0;border-radius:7px;background:transparent;color:#475569;display:grid;place-items:center}
.thumb .tops button:hover:not(:disabled){background:#e2e8f0}
.thumb .tops svg{width:16px;height:16px}
.viewer{grid-column:3;overflow:auto;position:relative;background:var(--bg);overscroll-behavior:contain}
.pages-wrap{display:flex;flex-direction:column;align-items:center;gap:18px;padding:22px 22px 90px;width:max-content;min-width:100%}
.page{position:relative;background:#fff;box-shadow:0 1px 3px rgba(15,23,42,.15),0 6px 18px rgba(15,23,42,.08);flex:none}
.page canvas.pc{position:absolute;inset:0;width:100%;height:100%;display:block}
.page .layer{position:absolute;left:0;top:0;transform-origin:0 0;touch-action:pan-x pan-y}
body.tool-draw .layer,body.tool-whiteout .layer,body.tool-highlight .layer,body.tool-rect .layer{touch-action:none;cursor:crosshair}
body.tool-text .layer{cursor:text}
body.tool-image .layer{cursor:copy}
.page .pnum{position:absolute;left:0;bottom:-17px;font-size:11px;color:#94a3b8}

/* objects */
.obj{position:absolute;touch-action:none;cursor:move;user-select:none;-webkit-user-select:none}
.obj.sel{outline:calc(1.5px * var(--iz)) solid var(--accent);outline-offset:calc(1px * var(--iz))}
.obj.editing{cursor:text;outline-style:dashed}
.obj img{width:100%;height:100%;display:block;pointer-events:none;-webkit-user-drag:none}
.obj.rect{}
.obj svg.draw{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.tcontent{white-space:pre;overflow:visible;cursor:inherit;outline:none;min-height:100%;text-rendering:geometricPrecision;font-kerning:none;font-variant-ligatures:none;-webkit-font-smoothing:antialiased}
.tcontent .ln{min-height:1em}
.obj.editing .tcontent{white-space:pre-wrap;overflow-wrap:anywhere;user-select:text;-webkit-user-select:text;cursor:text}
.tcontent:empty::before{content:"Type here";color:#94a3b8}
.h{position:absolute;width:calc(12px * var(--iz));height:calc(12px * var(--iz));background:#fff;border:calc(1.5px * var(--iz)) solid var(--accent);border-radius:50%;z-index:2}
.h::after{content:"";position:absolute;inset:calc(-10px * var(--iz))}
.h[data-h=nw]{left:0;top:0;transform:translate(-50%,-50%);cursor:nwse-resize}
.h[data-h=ne]{right:0;top:0;transform:translate(50%,-50%);cursor:nesw-resize}
.h[data-h=sw]{left:0;bottom:0;transform:translate(-50%,50%);cursor:nesw-resize}
.h[data-h=se]{right:0;bottom:0;transform:translate(50%,50%);cursor:nwse-resize}
.h[data-h=n]{left:50%;top:0;transform:translate(-50%,-50%);cursor:ns-resize}
.h[data-h=s]{left:50%;bottom:0;transform:translate(-50%,50%);cursor:ns-resize}
.h[data-h=e]{right:0;top:50%;transform:translate(50%,-50%);cursor:ew-resize}
.h[data-h=w]{left:0;top:50%;transform:translate(-50%,-50%);cursor:ew-resize}
.ftb{position:absolute;left:0;bottom:100%;margin-bottom:calc(10px * var(--iz));transform:scale(var(--iz));transform-origin:0 100%;display:flex;gap:2px;background:#0f172a;border-radius:10px;padding:3px;box-shadow:var(--shadow);z-index:5;white-space:nowrap;cursor:default}
.ftb.below{bottom:auto;top:100%;margin-bottom:0;margin-top:calc(10px * var(--iz));transform-origin:0 0}
.ftb button{border:0;background:transparent;color:#fff;border-radius:7px;height:32px;min-width:34px;padding:0 8px;display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600}
.ftb button:hover{background:#1e293b}
.ftb svg{width:17px;height:17px}
.ftb .del{color:#fca5a5}
.titem{position:absolute;border-radius:2px;cursor:pointer;background:rgba(99,102,241,.06);outline:1px dashed rgba(79,70,229,.45)}
.titem:hover{background:rgba(99,102,241,.18);outline-style:solid}
.tlayer{position:absolute;inset:0;display:none}
body.tool-edittext .tlayer{display:block}
.draft{position:absolute;border:1px dashed var(--accent);background:rgba(99,102,241,.08);pointer-events:none}

/* props */
.props{grid-column:4;background:var(--panel);border-left:1px solid var(--line);overflow-y:auto;padding:14px 16px 20px}
.props h3{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin:4px 0 12px}
.props .tip{color:var(--muted);font-size:14px;line-height:1.5}
.props .tip b{color:var(--ink)}
.field{margin-bottom:14px}
.field>label,.field>.flabel{display:block;font-size:12.5px;font-weight:600;color:#334155;margin-bottom:6px}
.row{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
select,input[type=number]{font:inherit;font-size:14px;border:1px solid #cfd5e2;border-radius:9px;padding:8px 10px;background:#fff;color:var(--ink);min-width:0}
select{width:100%}
.row.nowrap{flex-wrap:nowrap}
.row.nowrap select{flex:1;width:auto}
.stepper input[type=number]{width:58px;text-align:center}
input[type=number]{width:72px}
input[type=range]{width:100%;accent-color:var(--accent)}
.seg{display:inline-flex;border:1px solid #cfd5e2;border-radius:9px;overflow:hidden}
.seg button{border:0;background:#fff;width:38px;height:36px;display:grid;place-items:center;border-right:1px solid #e2e8f0}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--accent-soft);color:var(--accent)}
.seg button b,.seg button i,.seg button u{font-size:16px;font-family:Georgia,serif}
.sw{width:26px;height:26px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #cbd5e1;padding:0}
.sw.on{box-shadow:0 0 0 2px var(--accent)}
.sw.none{background:linear-gradient(135deg,#fff 45%,#ef4444 45%,#ef4444 55%,#fff 55%)}
input[type=color]{width:34px;height:30px;border:1px solid #cfd5e2;border-radius:8px;padding:2px;background:#fff}
.stepper{display:inline-flex;align-items:center;gap:4px}
.stepper button{width:32px;height:36px;border:1px solid #cfd5e2;border-radius:9px;background:#fff;font-weight:700}
.objactions{display:flex;gap:6px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:14px;margin-top:6px}
.objactions button{flex:1;min-width:84px;border:1px solid #cfd5e2;background:#fff;border-radius:9px;padding:9px 8px;font-size:13px;font-weight:600}
.objactions .danger{color:var(--danger);border-color:#fecaca}
.sheet-grip{display:none}

.zoombar{position:fixed;left:calc(var(--toolsW) + var(--pagesW) + (100vw - var(--toolsW) - var(--pagesW) - var(--propsW))/2);transform:translateX(-50%);bottom:18px;display:flex;align-items:center;gap:2px;background:#0f172a;color:#fff;border-radius:12px;padding:4px;box-shadow:var(--shadow);z-index:12}
.zoombar .icon-btn{width:34px;height:34px}
.zoomval{border:0;background:transparent;color:#fff;font-weight:600;font-size:13px;min-width:54px;height:34px;border-radius:8px}
.zoomval:hover{background:#1e293b}
.pageind{font-size:12.5px;color:#cbd5e1;padding:0 10px 0 6px;border-left:1px solid #334155;margin-left:4px}

.toast{position:fixed;left:50%;top:calc(var(--top) + 14px);transform:translate(-50%,-20px);opacity:0;background:#0f172a;color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;box-shadow:var(--shadow);transition:.2s;pointer-events:none;z-index:60;max-width:min(92vw,520px);text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.busy{position:fixed;inset:0;background:rgba(15,23,42,.35);display:grid;place-content:center;justify-items:center;gap:12px;z-index:70;color:#fff;font-weight:600}
.spinner{width:38px;height:38px;border:4px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.drop-overlay{position:fixed;inset:0;background:rgba(79,70,229,.14);border:3px dashed var(--accent);z-index:80;display:grid;place-items:center;pointer-events:none}
.drop-overlay div{background:var(--accent);color:#fff;padding:14px 22px;border-radius:12px;font-weight:700}
#printArea{display:none}
.noscript{position:fixed;inset:auto 0 0 0;background:#fee2e2;padding:12px;text-align:center}

/* tablets */
@media (max-width:1180px){ :root{--propsW:240px;--pagesW:150px} }

/* phones */
@media (max-width:820px){
  :root{--top:52px;--toolsW:0px;--pagesW:0px;--propsW:0px}
  .brand span{display:none}
  body.no-doc .brand span{display:inline}
  .btn .lbl{display:none}
  .btn{padding:9px}
  .btn.big .lbl,.btn.big{display:inline-flex}
  .actions{gap:2px}
  .sep{display:none}
  .mobile-only{display:inline-flex!important}
  .editor{display:block}
  .tools{position:fixed;left:0;right:0;bottom:0;flex-direction:row;justify-content:flex-start;height:calc(64px + env(safe-area-inset-bottom));padding:6px 6px calc(6px + env(safe-area-inset-bottom));border-right:0;border-top:1px solid var(--line);overflow-x:auto;overflow-y:hidden;z-index:20;scrollbar-width:none}
  .tools::-webkit-scrollbar{display:none}
  .tool{flex:none;width:62px}
  .viewer{position:fixed;left:0;right:0;top:var(--top);bottom:calc(64px + env(safe-area-inset-bottom))}
  .pages-wrap{padding:14px 10px 120px;gap:14px}
  .pages-panel{position:fixed;left:0;top:var(--top);bottom:0;width:min(78vw,260px);z-index:40;transform:translateX(-105%);transition:transform .2s;box-shadow:var(--shadow)}
  body.pages-open .pages-panel{transform:none}
  .thumb .tcanvas{max-width:150px}
  .props{position:fixed;left:0;right:0;bottom:calc(64px + env(safe-area-inset-bottom));max-height:38vh;border-left:0;border-top:1px solid var(--line);border-radius:16px 16px 0 0;box-shadow:0 -8px 24px rgba(15,23,42,.12);z-index:22;padding:8px 14px 12px;display:none}
  body.props-open .props{display:block}
  .props .tip{display:none}
  .props h3{margin:4px 0 8px}
  .field{margin-bottom:8px}
  .field>label,.field>.flabel{font-size:11.5px;margin-bottom:4px}
  .props h3{display:none}
  .props{padding-top:12px}
  .zoombar{left:auto;right:10px;transform:none;bottom:calc(76px + env(safe-area-inset-bottom));padding:3px}
  body.props-open .zoombar{display:none}
  .pageind{display:none}
}

@media print{
  @page{margin:0}
  body{background:#fff;overflow:visible!important;height:auto}
  body>*:not(#printArea){display:none!important}
  #printArea{display:block!important}
  #printArea img{display:block;width:100%;height:auto;page-break-after:always;break-after:page}
  #printArea img:last-child{page-break-after:auto;break-after:auto}
}

/* developer credit */


/* content pages */
body.doc-page{height:auto}
a.brand{color:inherit;text-decoration:none}
.doc-page .actions .btn{text-decoration:none}
.article-wrap{max-width:760px;margin:0 auto;padding:calc(var(--top) + 28px) 20px 40px}
.crumbs{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--accent);text-decoration:none}
.article h1{font-size:clamp(28px,4.6vw,42px);line-height:1.1;letter-spacing:-.03em;margin:0 0 14px}
.article h2{font-size:clamp(20px,3vw,24px);letter-spacing:-.02em;margin:36px 0 12px}
.article p,.article li,.article dd{font-size:16.5px;line-height:1.65;color:#1e293b}
.article .lede{font-size:clamp(17px,2.3vw,19px);color:var(--muted)}
.article a{color:var(--accent)}
.article code{background:#e8ebf3;border-radius:5px;padding:1px 5px;font-size:.9em}
.article ul,.article ol{padding-left:22px}
.article li{margin:6px 0}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;margin:22px 0 8px}
.cta-row .btn{text-decoration:none;color:#fff}
.cta-note{font-size:14px!important;color:#166534!important}
ol.steps{list-style:none;counter-reset:s;padding:0}
ol.steps li{counter-increment:s;position:relative;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px 14px 56px;margin:0 0 10px}
ol.steps li::before{content:counter(s);position:absolute;left:16px;top:13px;width:28px;height:28px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:700;display:grid;place-items:center;font-size:14px}
ol.steps b{display:block;margin-bottom:2px}
.article .faq{margin-top:40px;padding-top:0}
.article .faq h2{text-align:left}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:8px 18px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:0}
.facts dt{font-weight:700;font-size:15px;color:var(--ink)}
.facts dd{margin:0;font-size:15px!important}
.article blockquote{margin:0;padding:14px 18px;border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 12px 12px 0;line-height:1.6}
.more{margin-top:40px;border-top:1px solid var(--line);padding-top:8px}
.site-foot{text-align:center;color:var(--muted);font-size:14px;border-top:1px solid var(--line);padding:24px 20px 40px;max-width:760px;margin:0 auto}
.site-foot a{color:var(--ink)}
.site-foot .small{font-size:13px}
@media (max-width:560px){
  .facts{grid-template-columns:1fr;gap:2px}
  .facts dd{margin-bottom:10px}
  ol.steps li{padding-left:50px}
}

/* ---------- landing ---------- */
body.no-doc{background:#f6f7fb}
.landing{min-height:100%;padding:calc(var(--top) + 8px) 0 0;position:relative;overflow:hidden}
.landing::before{content:"";position:absolute;inset:0 0 auto 0;height:900px;z-index:-1;pointer-events:none;-webkit-mask-image:linear-gradient(#000 55%,transparent);mask-image:linear-gradient(#000 55%,transparent);
  background:radial-gradient(600px 380px at 12% 8%,rgba(99,102,241,.20),transparent 70%),radial-gradient(520px 360px at 92% 18%,rgba(236,72,153,.13),transparent 70%),radial-gradient(700px 420px at 60% 85%,rgba(56,189,248,.12),transparent 70%)}
.landing>section,.landing>.hero,.landing>footer{max-width:1120px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;padding-top:64px;padding-bottom:56px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;padding:6px 12px 6px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#334155;font-weight:600;font-size:13px;box-shadow:0 1px 2px rgba(15,23,42,.05)}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.18)}
.hero h1{font-size:clamp(36px,5.6vw,64px);line-height:1.02;letter-spacing:-.04em;margin:0 0 18px;font-weight:800}
.grad{background:linear-gradient(90deg,#4f46e5,#7c3aed 55%,#db2777);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{color:var(--muted);font-size:clamp(16px,1.6vw,19px);line-height:1.6;margin:0 0 24px;max-width:540px}
.trust{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 18px}
.trust li{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:14.5px;color:#1e293b}
.trust svg{width:18px;height:18px;color:var(--accent)}
.hero-card{background:rgba(255,255,255,.75);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(226,232,240,.9);border-radius:24px;padding:18px;box-shadow:0 1px 2px rgba(15,23,42,.05),0 24px 60px -12px rgba(79,70,229,.25);text-align:center}
.dropzone{display:flex;flex-direction:column;align-items:center;gap:8px;padding:40px 20px 30px;border:2px dashed #c7cce0;border-radius:18px;background:#fff;cursor:pointer;transition:border-color .15s,background .15s}
.dropzone:hover,.dropzone.over{border-color:var(--accent);background:#fafaff}
.dz-icon{width:52px;height:52px;color:var(--accent);stroke-width:1.5;padding:10px;background:var(--accent-soft);border-radius:16px;box-sizing:content-box;margin-bottom:6px}
.dropzone strong{font-size:20px;letter-spacing:-.01em}
.dz-hint{color:var(--muted);font-size:14px;margin-bottom:12px}
.btn.big{box-shadow:0 8px 20px -6px rgba(79,70,229,.55)}
.linkish{margin-top:14px;border:0;background:none;color:var(--accent);font-weight:600;font-size:15px;text-decoration:underline;text-underline-offset:3px}
.privacy{display:flex;gap:8px;align-items:flex-start;text-align:left;color:#166534;background:#ecfdf3;border:1px solid #bbf7d0;border-radius:12px;padding:11px 13px;font-size:13.5px;line-height:1.45;margin:14px 0 0}
.privacy svg{color:#16a34a;margin-top:1px;width:18px;height:18px}
.sec-title{font-size:clamp(24px,3.2vw,34px);letter-spacing:-.03em;line-height:1.15;margin:0 0 22px;text-align:center;font-weight:800}
.how{padding-top:24px;padding-bottom:16px}
.how-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.how-steps li{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
.how-steps .n{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--ink);color:#fff;font-weight:800}
.how-steps h3,.features h3{margin:2px 0 4px;font-size:16.5px;letter-spacing:-.01em}
.how-steps p,.features p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.5}
.feat{padding-top:56px}
.features{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.features li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;transition:transform .15s,box-shadow .15s,border-color .15s}
.features li:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#d5d9f5}
.fi{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#eef0ff,#f5ecff);color:var(--accent);margin-bottom:10px}
.fi svg{width:22px;height:22px}
.landing>.band{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:64px;padding:32px 36px;border-radius:24px;background:linear-gradient(135deg,#0f172a,#1e1b4b 60%,#312e81);color:#e2e8f0;max-width:1072px}
.band h2{margin:0 0 8px;font-size:clamp(21px,2.6vw,27px);letter-spacing:-.02em;color:#fff}
.band p{margin:0;line-height:1.6;max-width:600px;color:#c7d2fe;font-size:15.5px}
.band-links{display:flex;gap:10px;flex:none;flex-wrap:wrap}
.btn.light{background:#fff;color:var(--ink);text-decoration:none;padding:11px 16px}
.btn.light:hover{background:#eef0ff}
.btn.outline{background:transparent;border-color:rgba(199,210,254,.45);color:#fff;text-decoration:none;padding:11px 16px}
.btn.outline:hover{background:rgba(255,255,255,.08)}
.btn .gh-ico{width:18px;height:18px;fill:currentColor;stroke:none}
.faq{padding-top:72px;max-width:820px!important}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin:0 0 10px;padding:0 18px;transition:border-color .15s,box-shadow .15s}
.faq details[open]{border-color:#c7cbf6;box-shadow:0 6px 20px -10px rgba(79,70,229,.35)}
.faq summary{cursor:pointer;font-weight:650;font-size:16px;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:22px;height:22px;border-radius:50%;background:var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234f46e5' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center/14px no-repeat;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 16px;color:var(--muted);line-height:1.65;font-size:15px}
.faq a{color:var(--accent)}
.guides{padding-top:56px}
.guides ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.guides li a{display:flex;align-items:center;justify-content:space-between;gap:10px;height:100%;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;font-weight:650;font-size:15px;text-decoration:none;color:var(--ink);transition:border-color .15s,color .15s}
.guides li a:hover{border-color:var(--accent);color:var(--accent)}
.guides li svg{width:18px;height:18px;color:var(--accent)}
.landing>.credit{margin-top:72px;text-align:center;color:var(--muted);font-size:14px;border-top:1px solid var(--line);padding-top:36px;padding-bottom:calc(36px + env(safe-area-inset-bottom));max-width:none;background:#fff}
.credit p{margin:0 0 14px}
.credit a{color:var(--ink);text-decoration:none}
.credit a:hover{color:var(--accent)}
.credit .small{font-size:13px;margin-top:14px}
.credit .small a{color:var(--muted);text-decoration:underline}
.credit .social{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.credit .social a{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:#f8fafc;border:1px solid var(--line);color:var(--ink);transition:.15s}
.credit .social a:hover{background:var(--accent);border-color:var(--accent);color:#fff}

/* GitHub button in the top bar */
.gh-btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 12px;margin-left:4px;border-radius:10px;border:1px solid #334155;color:#fff;text-decoration:none;font-weight:600;font-size:13.5px;white-space:nowrap}
.gh-btn:hover{background:#1e293b;border-color:#475569}
.gh-ico{width:19px;height:19px;fill:currentColor;stroke:none}
body:not(.no-doc) .gh-lbl{display:none}
body:not(.no-doc) .gh-btn{padding:0;width:38px;justify-content:center}

@media (max-width:960px){
  .hero{grid-template-columns:1fr;gap:28px;padding-top:36px;text-align:center}
  .sub{margin-left:auto;margin-right:auto}
  .trust{justify-content:center}
  .hero-card{max-width:560px;margin:0 auto;width:100%}
  .features{grid-template-columns:1fr 1fr}
  .guides ul{grid-template-columns:1fr 1fr}
  .how-steps{grid-template-columns:1fr}
  .landing>.band{flex-direction:column;align-items:flex-start;margin-left:24px;margin-right:24px}
}
@media (max-width:820px){
  body:not(.no-doc) .gh-btn{display:none}
  .gh-btn{height:34px}
}
@media (max-width:560px){
  .landing>section,.landing>.hero,.landing>footer{padding-left:16px;padding-right:16px}
  .hero{padding-top:24px;padding-bottom:36px}
  .hero h1{font-size:clamp(34px,10vw,44px)}
  .hero-card{padding:12px;border-radius:20px}
  .dropzone{padding:28px 16px 22px}
  .features{grid-template-columns:1fr}
  .features li{display:grid;grid-template-columns:auto 1fr;column-gap:14px;padding:16px}
  .features li .fi{grid-row:span 2;margin:0}
  .guides ul{grid-template-columns:1fr}
  .landing>.band{margin-left:16px;margin-right:16px;padding:24px 20px}
  .gh-lbl{display:none}
  .gh-btn{padding:0;width:36px;justify-content:center}
  .sec-title{text-align:left}
  .faq{padding-top:56px}
}