@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap');
/* ===== Skin: STACK (mergepdfonline.net) — merge/stack motif, indigo #4f46e5 + green, layered cards ===== */
body.skin-stack{--indigo:#4f46e5;--indigo-d:#4338ca;--indigo-l:#eef0fe;--green:#16a34a;--green-d:#15803d;--ink:#1a1830;--mut:#54526b;--faint:#8a88a3;--line:#e6e5f0;--line2:#d4d3e3;--bg:#f5f5fb;--panel:#ffffff;--red:#dc2626;
  --stack:0 1px 0 var(--panel),0 3px 0 -1px var(--line2),0 6px 0 -2px var(--panel),0 9px 0 -3px var(--line2),0 14px 28px rgba(26,24,48,.12);
  margin:0;font-family:'Manrope',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
body.skin-stack *{box-sizing:border-box}
body.skin-stack h1,body.skin-stack h2,body.skin-stack h3,body.skin-stack h4{font-weight:800;line-height:1.2;color:var(--ink);letter-spacing:-.02em}
body.skin-stack a{color:var(--indigo);text-decoration:none}
body.skin-stack a:hover{color:var(--indigo-d);text-decoration:underline}

/* ---- Chrome ---- */
body.skin-stack .g-header{background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
body.skin-stack .g-bar{max-width:1120px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:12px 22px;flex-wrap:wrap}
body.skin-stack .g-brand{color:var(--ink);font-weight:800;font-size:18px;display:flex;align-items:center;gap:10px;letter-spacing:-.02em}
body.skin-stack .g-brand::before{content:"";display:inline-block;width:18px;height:18px;border-radius:5px;background:var(--indigo);box-shadow:5px -5px 0 -1px var(--green),10px -10px 0 -2px var(--indigo-l)}
body.skin-stack .g-nav{display:flex;gap:2px;flex-wrap:wrap;margin-left:auto}
body.skin-stack .g-nav a{color:var(--mut);font-size:14px;font-weight:600;padding:7px 13px;border-radius:8px}
body.skin-stack .g-nav a:hover{background:var(--indigo-l);color:var(--indigo-d);text-decoration:none}
body.skin-stack .g-nav a.is-main{color:var(--indigo);font-weight:700}
body.skin-stack .g-cta{background:var(--indigo);color:#fff;padding:8px 17px;border-radius:10px;font-weight:700;font-size:14px;box-shadow:0 4px 12px rgba(79,70,229,.35)}
body.skin-stack .g-cta:hover{background:var(--indigo-d);text-decoration:none}
body.skin-stack .g-main{max-width:1120px;margin:0 auto;padding:30px 22px 64px}

/* ---- Hero ---- */
body.skin-stack .hero{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center;background:var(--panel);
  border:1px solid var(--line);border-radius:18px;padding:40px;margin-bottom:40px;box-shadow:var(--stack)}
body.skin-stack .hero-copy{min-width:0}
body.skin-stack .hero-h1{font-size:42px;margin:0 0 16px;letter-spacing:-.03em}
body.skin-stack .hero-lead{font-size:17px;color:var(--mut);margin:0 0 20px}
body.skin-stack .hero-badges{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}
body.skin-stack .hero-badges li{background:var(--indigo-l);color:var(--indigo-d);font-size:12px;font-weight:700;padding:6px 13px;border-radius:980px}
body.skin-stack .hero-steps{margin:20px 0 0;padding-left:20px;color:var(--mut);font-size:14px}
body.skin-stack .hero-steps li{margin:5px 0}
body.skin-stack .hero-tool,body.skin-stack .hero-tool-page{min-width:0}
body.skin-stack .hero-tool-page{max-width:680px;margin:0 auto 40px}

/* ---- Converter widget (stacked pages) ---- */
body.skin-stack .cv-widget{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--stack)}
body.skin-stack .cv-drop{padding:40px 28px;text-align:center;border:2px dashed var(--line2);border-radius:12px;background:var(--bg);transition:.2s}
body.skin-stack .cv-drop.cv-over{background:var(--indigo-l);border-color:var(--indigo)}
body.skin-stack .cv-drop-inner{display:flex;flex-direction:column;align-items:center;gap:4px}
body.skin-stack .cv-icon{font-size:28px;width:60px;height:60px;line-height:60px;border-radius:14px;background:var(--indigo);color:#fff;box-shadow:4px -4px 0 -1px var(--green)}
body.skin-stack .cv-drop-title{color:var(--ink);font-weight:800;font-size:18px;margin:14px 0 2px}
body.skin-stack .cv-drop-hint{color:var(--faint);font-size:14px;margin:0 0 16px}
body.skin-stack .cv-btn{background:var(--indigo);color:#fff;border:0;border-radius:10px;padding:12px 30px;font-weight:700;font-size:15px;cursor:pointer;font-family:inherit;box-shadow:0 4px 12px rgba(79,70,229,.35)}
body.skin-stack .cv-btn:hover{background:var(--indigo-d)}
body.skin-stack .cv-accept{font-size:12px;color:var(--faint);margin:12px 0 0}
body.skin-stack .cv-status{padding:10px;font-size:13px;font-weight:600;text-align:center}
body.skin-stack .cv-status.cv-busy{color:var(--indigo)}
body.skin-stack .cv-status.cv-ok{color:var(--green-d)}
body.skin-stack .cv-status.cv-error{color:var(--red)}
body.skin-stack .cv-result{text-align:center;padding:6px 0 10px}
body.skin-stack .cv-download{display:inline-block;background:var(--green);color:#fff;padding:12px 28px;border-radius:10px;font-weight:700;box-shadow:0 4px 12px rgba(22,163,74,.3)}
body.skin-stack .cv-download:hover{background:var(--green-d);color:#fff;text-decoration:none}
body.skin-stack .cv-loading .cv-drop{opacity:.5;pointer-events:none}

/* ---- Sections & tools ---- */
body.skin-stack .section-h{font-size:26px;margin:0 0 20px;letter-spacing:-.02em}
body.skin-stack .toolgrid-wrap,body.skin-stack .content-body,body.skin-stack .articles-strip,body.skin-stack .other-tools,body.skin-stack .faq{margin:46px 0}
body.skin-stack .toolgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}
body.skin-stack .tool-card{position:relative;display:flex;flex-direction:column;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px;transition:.2s;box-shadow:0 2px 0 var(--line2),0 4px 0 -1px var(--panel),0 6px 0 -2px var(--line2),0 10px 20px rgba(26,24,48,.07)}
body.skin-stack .tool-card:hover{text-decoration:none;transform:translateY(-3px)}
body.skin-stack .tool-card.is-main{border-color:var(--indigo);box-shadow:0 2px 0 var(--indigo-l),0 4px 0 -1px var(--panel),0 6px 0 -2px var(--indigo-l),0 10px 22px rgba(79,70,229,.18)}
body.skin-stack .tool-card-label{color:var(--ink);font-weight:800;font-size:16px}
body.skin-stack .tool-card-short{font-size:11px;font-weight:700;color:var(--indigo);text-transform:uppercase;letter-spacing:.05em}
body.skin-stack .tool-card-lead{font-size:13px;color:var(--mut)}

/* ---- Longform ---- */
body.skin-stack .longform{max-width:780px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:36px;box-shadow:var(--stack)}
body.skin-stack .longform .lead-copy p:first-child,body.skin-stack .lead-copy{font-size:17px;color:var(--ink)}
body.skin-stack .lf-section{margin:8px 0}
body.skin-stack .longform h2{font-size:24px;margin:28px 0 12px;letter-spacing:-.02em}
body.skin-stack .longform p{margin:0 0 15px;color:var(--mut)}
body.skin-stack .longform a{color:var(--indigo);font-weight:600}

/* ---- Articles list ---- */
body.skin-stack .art-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
body.skin-stack .art-card{display:flex;flex-direction:column;gap:7px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px;transition:.2s;box-shadow:0 2px 0 var(--line2),0 4px 0 -1px var(--panel),0 6px 0 -2px var(--line2),0 10px 20px rgba(26,24,48,.07)}
body.skin-stack .art-card:hover{text-decoration:none;transform:translateY(-3px)}
body.skin-stack .art-cluster{font-size:11px;font-weight:700;color:var(--indigo);text-transform:uppercase;letter-spacing:.05em}
body.skin-stack .art-title{color:var(--ink);font-weight:800;font-size:16px;line-height:1.3}
body.skin-stack .art-excerpt{font-size:13px;color:var(--mut)}
body.skin-stack .art-meta{font-size:11px;color:var(--faint);margin-top:auto}
body.skin-stack .articles-strip-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
body.skin-stack .more-link{font-size:14px;font-weight:700;color:var(--indigo)}

/* ---- FAQ ---- */
body.skin-stack .faq-title{font-size:26px;margin:0 0 18px;letter-spacing:-.02em}
body.skin-stack .faq-list{display:flex;flex-direction:column;gap:10px}
body.skin-stack .faq-item{border:1px solid var(--line);border-radius:12px;background:var(--panel);box-shadow:0 2px 0 var(--line2),0 6px 14px rgba(26,24,48,.06)}
body.skin-stack .faq-q{cursor:pointer;padding:16px 18px;font-weight:700;color:var(--ink);list-style:none}
body.skin-stack .faq-q::-webkit-details-marker{display:none}
body.skin-stack .faq-q::after{content:"+";float:right;color:var(--indigo);font-size:20px;font-weight:800}
body.skin-stack .faq-item[open]{border-color:var(--indigo)}
body.skin-stack .faq-item[open] .faq-q{color:var(--indigo)}
body.skin-stack .faq-item[open] .faq-q::after{content:"\2212"}
body.skin-stack .faq-a{padding:0 18px 16px;color:var(--mut)}

/* ---- Article page ---- */
body.skin-stack .crumbs{font-size:12px;color:var(--faint);margin:22px 0 14px}
body.skin-stack .crumbs span{margin:0 6px;color:var(--line2)}
body.skin-stack .article{max-width:740px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:40px;box-shadow:var(--stack)}
body.skin-stack .article-head{margin-bottom:14px}
body.skin-stack .article-head h1{font-size:33px;color:var(--ink);margin:8px 0;letter-spacing:-.03em}
body.skin-stack .article-meta{color:var(--faint);font-size:13px}
body.skin-stack .tool-cta,body.skin-stack .tool-cta-foot{background:var(--indigo-l);border:1px solid #dcdaff;border-radius:14px;padding:20px 24px;display:flex;gap:16px;
  align-items:center;justify-content:space-between;flex-wrap:wrap;margin:26px 0}
body.skin-stack .tool-cta-foot{margin-top:34px}
body.skin-stack .cta-btn{background:var(--indigo);color:#fff;padding:11px 22px;border-radius:10px;font-weight:700;box-shadow:0 4px 12px rgba(79,70,229,.35)}
body.skin-stack .cta-btn:hover{background:var(--indigo-d);color:#fff;text-decoration:none}
body.skin-stack .article-body{color:var(--mut);font-size:15.5px}
body.skin-stack .article-body h2{color:var(--ink);font-size:25px;margin:30px 0 12px;letter-spacing:-.02em}
body.skin-stack .article-body h3{color:var(--ink);font-size:20px;margin:24px 0 10px}
body.skin-stack .article-body p{margin:0 0 15px}
body.skin-stack .article-body ul,body.skin-stack .article-body ol{margin:0 0 15px 24px}
body.skin-stack .article-body li{margin:4px 0}
body.skin-stack .article-body a{color:var(--indigo);font-weight:600}

/* ---- Index & error ---- */
body.skin-stack .page-head{margin-bottom:14px}
body.skin-stack .page-head h1{font-size:36px;color:var(--ink);letter-spacing:-.03em}
body.skin-stack .page-head-lead{font-size:17px;color:var(--mut);margin-top:10px}
body.skin-stack .cluster-block{margin:42px 0}
body.skin-stack .empty-note{color:var(--faint);background:var(--panel);border:1px dashed var(--line2);border-radius:12px;padding:24px;text-align:center}
body.skin-stack .error-page{text-align:center;padding:90px 0}
body.skin-stack .error-page h1{font-size:100px;color:var(--indigo);letter-spacing:-.04em}

/* ---- Footer ---- */
body.skin-stack .g-footer{background:#15132b;border-top:1px solid #15132b;margin-top:56px;padding:48px 22px 26px;color:#b8b6cc}
body.skin-stack .g-foot-grid{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
body.skin-stack .g-foot-grid h4{color:#fff;font-size:13px;font-weight:700;margin:0 0 12px}
body.skin-stack .g-foot-grid a{display:block;color:#9694b0;font-size:13.5px;padding:4px 0}
body.skin-stack .g-foot-grid a:hover{color:#fff}
body.skin-stack .g-foot-brand .g-brand{color:#fff}
body.skin-stack .g-copy{max-width:1120px;margin:32px auto 0;border-top:1px solid #2a2747;padding-top:20px;font-size:12.5px;color:#6e6c8a}

@media(max-width:760px){
  body.skin-stack .hero{grid-template-columns:1fr;gap:28px;padding:28px}
  body.skin-stack .hero-h1{font-size:30px}
  body.skin-stack .article,body.skin-stack .longform{padding:26px}
  body.skin-stack .g-foot-grid{grid-template-columns:1fr 1fr}
}