:root{--bg:#f4f8fd;--surface:#fff;--text:#0b2347;--muted:#5f7188;--line:#d8e5f3;--primary:#1667e8;--success:#168546;--shadow:0 10px 28px rgba(24,64,112,.08);--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:inherit}button,input{font:inherit}button{touch-action:manipulation}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.97);border-bottom:1px solid rgba(216,229,243,.9);box-shadow:0 5px 22px rgba(24,64,112,.06);backdrop-filter:saturate(160%) blur(10px)}
.header-inner{max-width:1180px;margin:auto;padding:11px 20px;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px;position:relative}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#1768ea,#17b2ec);color:#fff;font-weight:900;font-size:20px;box-shadow:0 8px 20px rgba(23,104,234,.22)}.brand-copy strong{display:block;font-size:17px;line-height:1.15;letter-spacing:-.3px}.brand-copy span{display:block;color:#61748d;font-size:12px;margin-top:2px}
.header-actions{display:flex;align-items:center;justify-content:center;gap:8px}.icon-btn{width:42px;height:42px;border:1px solid #d8e5f3;border-radius:12px;background:#fff;color:#12345d;display:grid;place-items:center;cursor:pointer;line-height:0}.icon-btn:hover{background:#f4f8fd;border-color:#bcd2ea}.icon-btn svg{width:21px;height:21px;display:block;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}.menu-btn{display:none}.top-nav{display:flex;align-items:center;gap:4px;padding:4px;background:#f7fafe;border:1px solid #e0e9f3;border-radius:14px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}.top-nav::-webkit-scrollbar{display:none}.top-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 13px;border:1px solid transparent;border-radius:10px;color:#4e6178;text-decoration:none;font-size:12.5px;font-weight:780;white-space:nowrap}.top-nav a:hover{background:#fff;border-color:#d9e4ef;color:var(--text)}.top-nav a[aria-current="page"]{background:#eaf2ff;color:#1759c9;border-color:#cfe0ff}
.mobile-nav{display:none;max-width:1180px;margin:0 auto;padding:0 14px 10px}.mobile-nav.open{display:grid;gap:5px}.mobile-nav a{padding:11px 12px;border-radius:11px;text-decoration:none;font-weight:750;color:#405875;background:#f7fafe;border:1px solid #e0e9f3}.mobile-nav a[aria-current="page"]{color:#1759c9;background:#eaf2ff;border-color:#cfe0ff}.search-panel{display:none;max-width:1180px;margin:0 auto;padding:0 14px 10px}.search-panel.open{display:block}.search-panel form{display:flex;gap:8px}.search-panel input{min-height:44px}.search-panel button{min-height:44px;padding:9px 15px;border:0;border-radius:11px;background:linear-gradient(135deg,#1767e7,#19a9e8);color:#fff;font-weight:800;cursor:pointer}
main{max-width:1180px;margin:auto;padding:28px 20px 64px}.hero-shell{position:relative}.hero-shell:before{content:"";position:absolute;left:5%;right:5%;top:-24px;height:250px;background:radial-gradient(circle at 50% 10%,rgba(30,118,232,.17),transparent 67%);pointer-events:none;z-index:-1}.crumbs,.tool-page .crumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;color:#687b92;font-size:14px;margin:0 0 18px}.crumbs a{text-decoration:none;color:#4f637c}.crumbs a:hover{color:var(--primary);text-decoration:underline}.crumb-sep{color:#98abc0}.hero{display:grid;grid-template-columns:86px minmax(0,1fr);gap:20px;align-items:center;padding:14px 0 28px}.tool-icon{width:86px;height:86px;border-radius:22px;display:grid;place-items:center;background:linear-gradient(135deg,#1893f5,#1760df);box-shadow:0 15px 28px rgba(23,104,234,.2);font-size:42px;color:#fff}.hero h1{margin:0 0 7px;font-size:clamp(31px,5vw,48px);line-height:1.06;letter-spacing:-.055em}.hero p{margin:0;max-width:760px;color:var(--muted);font-size:17px}
.info-callout{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border:1px solid #cfe2f8;border-radius:16px;background:linear-gradient(135deg,#eff7ff,#e5f2ff);color:#1d466f;margin-bottom:22px}.info-icon{width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;border-radius:50%;background:#1d7de9;color:#fff;font-weight:900}.info-callout strong{display:block;margin-bottom:2px}.layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(320px,.95fr);gap:22px;align-items:start}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.tool-card{min-height:100%}.card-head{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:4px}.card h2{margin:0 0 16px;font-size:21px;letter-spacing:-.025em}.secondary{min-height:40px;padding:9px 14px;border-radius:11px;border:1px solid #bcd2ea;background:#fff;color:#2c557e;font-weight:800;cursor:pointer}.secondary:hover{background:#f7fbff;border-color:#8eb7df}
.mode-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin:14px 0 22px}.mode-btn{min-height:46px;padding:9px 8px;border-radius:12px;border:1px solid #d3e0ed;background:#fff;color:#36506d;font-weight:800;cursor:pointer}.mode-btn:hover{border-color:#a9c6e5;background:#f8fbff}.mode-btn.active{background:linear-gradient(135deg,#1767e7,#19a9e8);color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(23,104,231,.18)}
.field{margin-bottom:16px}label{display:block;font-weight:800;margin-bottom:7px}input{width:100%;min-height:52px;border:1px solid #c6d7e8;border-radius:12px;background:#fff;color:var(--text);padding:12px 14px;outline:none;font-size:17px}input:focus{border-color:#2778ea;box-shadow:0 0 0 3px rgba(39,120,234,.13)}input::placeholder{color:#8aa0b8}.hint{margin-top:6px;color:var(--muted);font-size:13px}.hidden{display:none!important}
.primary{width:100%;min-height:52px;border:0;border-radius:13px;background:linear-gradient(135deg,#1767e7,#19a9e8);color:#fff;font-weight:850;cursor:pointer;box-shadow:0 9px 20px rgba(23,104,231,.2)}.primary:hover{background:linear-gradient(135deg,#1056ce,#088ecb);transform:translateY(-1px)}.primary:active{transform:translateY(0)}
.result-card{border-color:#c9ecd8;background:linear-gradient(180deg,#fbfffd,#f2fff7)}.result-card h2{color:var(--success)}.result-main{border:1px solid #8ee3b0;background:linear-gradient(135deg,#dcffe9,#eafff2);border-radius:13px;padding:18px;margin-bottom:12px}.result-label{font-size:13px;font-weight:850;color:#2f704b;text-transform:uppercase;letter-spacing:.65px}.result-value{font-size:clamp(28px,4.4vw,39px);line-height:1.15;font-weight:900;color:#116735;overflow-wrap:anywhere;margin-top:4px}.result-sub{color:#3e7557;margin-top:6px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}.stat{border:1px solid #d3e6f8;border-radius:12px;padding:14px;background:#f6fbff}.stat-icon{font-size:22px;margin-bottom:4px}.stat strong{display:block;font-size:13px}.stat span{display:block;font-weight:850;font-size:20px;margin-top:5px;color:#1d4972;overflow-wrap:anywhere}
.support-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin-top:22px}.support-grid .card{min-height:100%}.support-grid h2{font-size:19px}.support-grid p,.support-grid li{color:#5f7188}.support-grid ul{padding-left:20px;margin:8px 0 0}.examples{display:grid;gap:9px;margin-top:8px}.example{padding:11px 13px;border:1px solid #d7e5f2;background:#f7fbff;border-radius:11px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;overflow-wrap:anywhere}.faq-card{margin-top:22px}.faq{border-top:1px solid var(--line)}.faq:first-child{border-top:0}.faq button{width:100%;padding:16px 0;text-align:left;background:none;border:0;color:var(--text);font-weight:850;display:flex;justify-content:space-between;gap:16px;cursor:pointer}.faq-answer{display:none;color:var(--muted);padding:0 0 16px}.faq.open .faq-answer{display:block}.faq-icon{color:var(--primary)}
footer{margin-top:28px;color:#dbe8f7;background:linear-gradient(135deg,#082e62,#06498a);border-top:1px solid #0b4b85}.footer-inner{max-width:1180px;margin:auto;padding:23px 20px;display:flex;justify-content:space-between;align-items:center;gap:22px}.footer-brand{display:flex;align-items:center;gap:10px}.footer-mark{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.12);display:grid;place-items:center;color:#fff;font-weight:900}.footer-brand strong{display:block;color:#fff}.footer-brand span{display:block;font-size:12px;color:#bdd1e5}.footer-links{display:flex;gap:18px;flex-wrap:wrap}.footer-links a{color:#eef6ff;text-decoration:none;font-size:13px}.footer-links a:hover{text-decoration:underline}.copyright{border-top:1px solid rgba(255,255,255,.12);padding:13px 20px;text-align:center;font-size:12px;color:#bcd1e6}.skip-link{position:fixed;left:12px;top:-60px;z-index:9999;background:#0b2f66;color:#fff;padding:10px 14px;border-radius:9px;text-decoration:none;font-weight:800}.skip-link:focus{top:12px}button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid rgba(37,99,235,.2);outline-offset:2px}
@media(max-width:980px){.header-inner{padding:10px 16px}.top-nav{display:none}.menu-btn{display:grid}.layout{grid-template-columns:1fr}.header-actions{margin-left:auto}}
@media(max-width:700px){main{padding:18px 14px 48px}.hero{grid-template-columns:60px minmax(0,1fr);gap:13px;padding:8px 0 20px}.tool-icon{width:60px;height:60px;border-radius:17px;font-size:28px}.hero h1{font-size:31px}.hero p{font-size:15px}.info-callout{padding:14px}.card{padding:18px;border-radius:16px}.card-head{align-items:flex-start}.mode-grid{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr}.support-grid{grid-template-columns:1fr;gap:12px}.footer-inner{padding:20px 16px;flex-direction:column;align-items:center}.footer-links{gap:12px 16px}.copyright{text-align:center;padding-left:16px;padding-right:16px}.search-panel form{flex-direction:column}.search-panel button{width:100%}}
@media(max-width:430px){.header-inner{padding:9px 12px}.brand-copy strong{font-size:16px}.brand-copy span{font-size:11px}.icon-btn{width:39px;height:39px}.crumbs{font-size:13px;gap:7px}.hero h1{font-size:28px}.mode-btn{font-size:13px;padding-left:5px;padding-right:5px}.secondary{padding:8px 10px;font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
/* Download actions — shared polish for TXT/CSV/PDF-style download controls. */
button[id^="download"],a[id^="download"],a[download]{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:8px 14px;border:1px solid #bcd2ea;border-radius:11px;background:linear-gradient(180deg,#ffffff,#f3f8fd);color:#24547e;font:inherit;font-weight:800;line-height:1.2;text-decoration:none;white-space:nowrap;cursor:pointer;box-shadow:0 3px 10px rgba(24,64,112,.07);transition:border-color .15s ease,background .15s ease,box-shadow .15s ease,transform .15s ease}
button[id^="download"]:hover:not(:disabled),a[id^="download"]:hover,a[download]:hover{border-color:#8eb7df;background:linear-gradient(180deg,#ffffff,#eaf3ff);box-shadow:0 6px 14px rgba(24,64,112,.11);transform:translateY(-1px)}
button[id^="download"]:active:not(:disabled),a[id^="download"]:active,a[download]:active{transform:translateY(0)}
button[id^="download"]:disabled{opacity:.58;cursor:not-allowed;box-shadow:none}
@media(max-width:430px){button[id^="download"],a[id^="download"],a[download]{min-height:40px;padding:8px 12px;font-size:14px}}


/* ZEMTOOLS LOGO — visual-only replacement; existing header structure stays unchanged. */
.site-header .brand{position:relative!important;display:flex!important;align-items:center!important;min-width:0!important;text-decoration:none!important;}
.site-header .brand .brand-mark,
.site-header .brand .brand-copy,
.site-header .brand > div:last-child{display:none!important;}
.site-header .brand::before{content:"";display:block;width:190px;height:48px;background:url('zemtools-logo.webp') center/contain no-repeat;background-repeat:no-repeat;flex:0 0 auto;}
@media(max-width:650px){.site-header .brand::before{width:158px;height:42px;}}