:root{
  --ink:#12213F;--ink-soft:#3A4A6B;--paper:#E9EDE9;--paper-deep:#DEE4DD;--card:#FFFFFF;
  --marigold:#D98A2B;--marigold-deep:#B96F19;--seal:#1F6F54;--stamp-red:#A63A3A;--line:#C9CFC7;
  --radius:14px;--shadow:0 6px 20px rgba(18,33,63,0.09);
  --font-display:"Fraunces",serif;--font-body:"IBM Plex Sans",sans-serif;--font-mono:"IBM Plex Mono",monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);line-height:1.55;}
img{max-width:100%;display:block;}
a{color:var(--seal);}
.wrap{max-width:1280px;margin:0 auto;padding:0 24px;}

header.site{background:var(--ink);color:#fff;padding:16px 0;position:sticky;top:0;z-index:40;border-bottom:3px solid var(--marigold);}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.3rem;letter-spacing:.2px;color:#fff;text-decoration:none;}
.brand .mark{width:34px;height:34px;border-radius:8px;background:var(--marigold);display:flex;align-items:center;justify-content:center;color:var(--ink);font-family:var(--font-mono);font-weight:700;font-size:.85rem;}
nav.top{display:flex;gap:22px;font-size:.92rem;}
nav.top a{color:#E9EDE9;text-decoration:none;opacity:.88;}
nav.top a:hover{opacity:1;text-decoration:underline;}

.hero{padding:56px 0 44px;text-align:center;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:34px 34px;opacity:.25;pointer-events:none;}
.hero .eyebrow{font-family:var(--font-mono);font-size:.78rem;letter-spacing:1.5px;text-transform:uppercase;color:var(--seal);background:#fff;border:1px solid var(--line);display:inline-block;padding:5px 14px;border-radius:100px;margin-bottom:18px;position:relative;}
h1{font-family:var(--font-display);font-size:clamp(2rem,4.4vw,3.1rem);line-height:1.12;margin:0 0 16px;font-weight:700;position:relative;}
h1 span{color:var(--marigold-deep);}
.hero p.sub{max-width:660px;margin:0 auto;color:var(--ink-soft);font-size:1.08rem;position:relative;}
.trust-row{display:flex;gap:26px;justify-content:center;flex-wrap:wrap;margin-top:26px;position:relative;font-family:var(--font-mono);font-size:.82rem;color:var(--ink-soft);}
.trust-row span{display:flex;align-items:center;gap:7px;}
.trust-row .dot{width:7px;height:7px;border-radius:50%;background:var(--seal);}

.app-section{padding:20px 0 60px;}
.app-grid{display:grid;grid-template-columns:220px 1fr 220px;gap:22px;align-items:start;}
.rail{display:flex;flex-direction:column;gap:14px;position:sticky;top:90px;}
.rail-title{font-family:var(--font-mono);font-size:.72rem;letter-spacing:1.2px;text-transform:uppercase;color:var(--ink-soft);margin-bottom:2px;padding-left:4px;}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;text-align:left;width:100%;font-family:var(--font-body);color:var(--ink);}
a.tool-card{text-decoration:none;color:inherit;line-height:1.15;text-align:left;}
a.tool-card .tool-meta small{display:block;line-height:1.3;}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--marigold);}
.tool-card.active{border-color:var(--seal);box-shadow:0 0 0 3px rgba(31,111,84,.15),var(--shadow);}
.tool-icon{width:44px;height:34px;border-radius:6px;flex-shrink:0;position:relative;background:#fff;border:1.5px solid var(--ink);display:flex;align-items:center;justify-content:center;}
.tool-icon::before{content:"";position:absolute;top:0;left:0;right:0;height:8px;border-radius:5px 5px 0 0;background:var(--stripe,var(--marigold));}
.tool-icon .code{font-family:var(--font-mono);font-size:.52rem;font-weight:700;color:var(--ink);margin-top:4px;letter-spacing:.3px;}
.tool-meta strong{display:block;font-size:.88rem;line-height:1.2;}
.tool-meta small{color:var(--ink-soft);font-size:.72rem;font-family:var(--font-mono);}

.stage{background:var(--card);border:1px solid var(--line);border-radius:20px;min-height:520px;padding:30px;position:relative;overflow:hidden;box-shadow:var(--shadow);}
.stage-seal{position:absolute;right:-60px;bottom:-60px;width:260px;height:260px;border:14px solid var(--paper-deep);border-radius:50%;opacity:.6;pointer-events:none;}
.stage-empty{position:relative;z-index:1;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--ink-soft);min-height:460px;}
.stage-empty .big-icon{width:88px;height:70px;border-radius:10px;background:#fff;border:2px dashed var(--line);display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-family:var(--font-mono);font-size:1.6rem;color:var(--line);}
.stage-empty h2{font-family:var(--font-display);color:var(--ink);margin:0 0 8px;font-size:1.4rem;}
.stage-active{position:relative;z-index:1;}
.stage-title{font-family:var(--font-display);margin:0 0 4px;}
.stage-note{color:var(--ink-soft);margin:0 0 18px;font-size:.92rem;}
.field-group{margin-bottom:16px;}
.field-group label{display:block;font-size:.72rem;font-weight:600;color:var(--ink-soft);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px;font-family:var(--font-mono);}
.field-group input[type=file],.field-group input[type=text]{width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;font-family:var(--font-body);font-size:.9rem;color:var(--ink);background:var(--paper);outline:none;transition:border-color .15s ease;}
.field-group input:focus{border-color:var(--marigold);}
.paper-toggle{display:flex;gap:10px;margin-bottom:20px;}
.paper-btn{flex:1;padding:12px 8px;border:1.5px solid var(--line);border-radius:12px;background:var(--paper);cursor:pointer;text-align:center;transition:all .18s ease;font-family:var(--font-body);}
.paper-btn .pb-title{font-size:.85rem;font-weight:700;color:var(--ink);}
.paper-btn .pb-sub{font-size:.68rem;color:var(--ink-soft);margin-top:2px;font-family:var(--font-mono);}
.paper-btn:hover{border-color:var(--marigold);}
.paper-btn.active{border-color:var(--seal);background:#EAF3EF;box-shadow:0 0 0 2px rgba(31,111,84,.15);}
button.btn{font-family:var(--font-body);font-weight:600;font-size:.9rem;padding:11px 20px;border-radius:9px;border:none;cursor:pointer;transition:transform .12s ease,background .15s ease;}
.btn.primary{background:var(--marigold);color:var(--ink);width:100%;}
.btn.primary:hover{background:var(--marigold-deep);transform:translateY(-1px);}
.btn.primary:disabled{background:#EFD9B4;cursor:not-allowed;transform:none;}
.btn.ghost{background:transparent;border:1.5px solid var(--line);color:var(--ink);}
.btn.ghost:hover{border-color:var(--ink);}
.status-box{margin-top:14px;padding:12px 16px;border-radius:10px;font-size:.85rem;font-weight:600;text-align:center;display:none;}
.status-box.loading{background:#EAF0FB;color:var(--ink-soft);display:block;}
.status-box.success{background:#E6F4EA;color:var(--seal);display:block;}
.status-box.error{background:#FBE9E7;color:var(--stamp-red);display:block;}
.progress-wrap{margin-top:10px;background:var(--paper);border-radius:8px;height:6px;overflow:hidden;display:none;}
.progress-bar{height:100%;background:var(--marigold);border-radius:8px;width:0%;transition:width .3s ease;}
.download-section{display:none;margin-top:18px;gap:10px;flex-direction:column;}
.download-section.visible{display:flex;}
.dl-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px;border-radius:12px;font-family:var(--font-body);font-size:.88rem;font-weight:700;cursor:pointer;border:none;text-decoration:none;transition:opacity .15s ease,transform .12s ease;}
.dl-btn:active{transform:scale(.98);}
.dl-4x6{background:var(--ink);color:#fff;}
.dl-a4{background:var(--seal);color:#fff;}
.dl-btn:hover{opacity:.9;}

.section{padding:56px 0;}
.section h2{font-family:var(--font-display);font-size:clamp(1.5rem,3vw,2rem);margin-bottom:8px;}
.section p.lead{color:var(--ink-soft);max-width:680px;margin:0 0 30px;}
table.specs{width:100%;border-collapse:collapse;background:var(--card);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);}
table.specs th,table.specs td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:.9rem;}
table.specs th{background:var(--ink);color:#fff;font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.6px;font-weight:500;}
table.specs tr:last-child td{border-bottom:none;}
table.specs td.mono{font-family:var(--font-mono);color:var(--ink-soft);}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;}
.step{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;}
.step .num{font-family:var(--font-mono);color:var(--marigold-deep);font-size:.78rem;letter-spacing:1px;margin-bottom:8px;}
.step h3{margin:0 0 8px;font-size:1.05rem;font-family:var(--font-display);}
.step p{margin:0;color:var(--ink-soft);font-size:.9rem;}
.faq-item{border-bottom:1px solid var(--line);padding:16px 0;}
.faq-item summary{cursor:pointer;font-weight:600;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-family:var(--font-mono);color:var(--marigold-deep);font-size:1.3rem;}
.faq-item[open] summary::after{content:"\2013";}
.faq-item p{color:var(--ink-soft);margin:10px 0 0;font-size:.93rem;}

footer.site{background:var(--ink);color:#DDE3DD;padding:44px 0 26px;font-size:.88rem;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px;}
.footer-grid h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.8px;font-family:var(--font-mono);margin:0 0 12px;}
.footer-grid a{display:block;color:#C9D0C9;text-decoration:none;margin-bottom:8px;}
.footer-grid a:hover{color:#fff;}
.footer-text{color:#B7C0DA;max-width:280px;}
.footer-bottom{border-top:1px solid #263457;margin-top:30px;padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#9AA6C4;font-size:.8rem;}

.tools-ribbon{background:var(--card);border-bottom:1px solid var(--line);padding:12px 0;}
.ribbon-scroll{display:flex;gap:12px;overflow-x:auto;padding:4px 2px;scrollbar-width:thin;}
.ribbon-scroll::-webkit-scrollbar{height:6px;}
.ribbon-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:10px;}
.ribbon-item{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--paper);border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;cursor:pointer;font-family:var(--font-body);transition:transform .15s ease,border-color .15s ease,background .15s ease;min-width:88px;color:var(--ink);}
.ribbon-item:hover{border-color:var(--marigold);background:#FFF6E7;transform:translateY(-2px);}
.ribbon-icon{font-size:1.3rem;line-height:1;}
.ribbon-label{font-size:.72rem;font-weight:600;color:var(--ink);text-align:center;line-height:1.2;white-space:nowrap;}

.page-box{max-width:820px;margin:48px auto;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow);}
.page-box h1{font-size:2rem;}
.page-box p,.page-box li{color:var(--ink-soft);}
.all-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;}
.all-grid a.tool-card{text-decoration:none;}
.all-grid .ico{font-size:1.5rem;width:44px;text-align:center;flex-shrink:0;}

@media (max-width:980px){
  .app-grid{grid-template-columns:1fr;}
  .rail{flex-direction:row;flex-wrap:wrap;position:static;}
  .rail-title{flex:1 1 100%;}
  .tool-card{flex:1 1 45%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:560px){
  nav.top{display:none;}
  .tool-card{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .paper-toggle{flex-direction:column;}
  .ribbon-item{min-width:76px;padding:8px 10px;}
  .ribbon-label{font-size:.68rem;}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important;}}
:focus-visible{outline:2.5px solid var(--marigold-deep);outline-offset:2px;}