:root{--bg:#f8fafc;--white:#ffffff;--border:#e2e8f0;--border2:#cbd5e1;--text:#0f172a;--text2:#475569;--text3:#64748b;--green:#059669;--gbg:#ecfdf5;--red:#dc2626;--rbg:#fef2f2;--amber:#d97706;--abg:#fffbeb;--blue:#2563eb;--bbg:#eff6ff;--r:20px;--rs:10px;}
*{margin:0;padding:0;box-sizing:border-box;}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}

/* ── NAV ── */
.top-nav{position:sticky;top:0;background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:200;}
.nav-inner{max-width:1140px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px;position:relative;}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.lmark{height:36px;display:flex;align-items:center;}
.lmark img{height:100%;width:auto;object-fit:contain;}
.lname{display:none;}
.lfy{display:none;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text2);text-decoration:none;transition:all 0.15s;white-space:nowrap;}
.nav-links a:hover{background:var(--bg);color:var(--text);}
.nav-links a.active{background:var(--text);color:#fff !important;}
.nav-links a.nav-blog{color:var(--blue);}
.nav-links a.nav-blog:hover{background:var(--bbg);}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:8px 10px;cursor:pointer;color:var(--text2);}
.nav-menu{display:flex;align-items:center;gap:4px;}
@media(max-width:700px){
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:12px 16px;flex-direction:column;align-items:stretch;gap:4px;box-shadow:0 8px 24px rgba(0,0,0,0.08);}
  .nav-menu.open{display:flex;}
  .nav-links{flex-direction:column;}
  .nav-links a{padding:12px 16px;border-radius:10px;}
}

/* ── LAYOUT ── */
.container{max-width:1140px;margin:0 auto;padding:40px 24px;}
@media(max-width:900px){.container{padding:24px 16px;}}

.tool-layout{display:grid;grid-template-columns:380px 1fr;gap:40px;align-items:start;}
.inputs-col{background:var(--white);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;box-shadow:0 4px 6px -1px rgba(0,0,0,0.02);}
.results-col{min-width:0;}
@media(max-width:900px){
  .tool-layout{grid-template-columns:1fr;gap:24px;}
  .tool-layout:not(.show-results) .results-col{display:none;}
  .tool-layout.show-results .inputs-col{display:none;}
  .mob-action{display:block !important;}
  .d-desk{display:none !important;}
}

/* ── FORM ── */
.sb-sec{padding:24px;border-bottom:1px solid var(--border);}
.sb-sec:last-child{border-bottom:none;}
.sec-lbl{font-size:12px;font-family:'JetBrains Mono',monospace;color:var(--text3);font-weight:600;letter-spacing:0.1em;text-transform:uppercase;margin-bottom:16px;}
.frow{margin-bottom:16px;}.frow:last-child{margin-bottom:0;}
.flbl{display:block;font-size:14px;color:var(--text2);font-weight:600;margin-bottom:8px;}
.sw{position:relative;}.sw::after{content:'▾';position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--text3);pointer-events:none;font-weight:bold;}
select,input[type="number"]{width:100%;background:var(--white);border:1px solid var(--border);border-radius:var(--rs);padding:12px 16px;color:var(--text);font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:500;outline:none;transition:all 0.2s ease;box-sizing:border-box;}
select{cursor:pointer;-webkit-appearance:none;appearance:none;padding-right:36px;font-family:'Inter',sans-serif;}
select:focus,input[type="number"]:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--bbg);}
input::placeholder{color:var(--text3);font-weight:400;}
.seg{display:flex;background:var(--bg);border:1px solid var(--border);border-radius:var(--rs);padding:4px;gap:4px;}
.sgb{flex:1;padding:10px 8px;border:none;border-radius:6px;background:transparent;color:var(--text2);font-family:'Inter',sans-serif;font-size:13px;font-weight:600;cursor:pointer;transition:all 0.15s;text-align:center;}
.sgb.active{background:var(--white);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06);}
.rg2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.rc{border:2px solid var(--border);border-radius:var(--rs);padding:16px;cursor:pointer;transition:all 0.15s;background:var(--white);}
.rc.active{border-color:var(--text);background:var(--text);}
.rct{font-size:15px;font-weight:700;margin-bottom:4px;}
.rc.active .rct{color:white;}
.rcs{font-size:12px;color:var(--text3);font-family:'JetBrains Mono',monospace;}
.rc.active .rcs{color:rgba(255,255,255,.7);}
.chd{display:flex;align-items:center;justify-content:space-between;cursor:pointer;margin-bottom:12px;user-select:none;}
.carr{font-size:10px;color:var(--text3);transition:transform 0.2s;font-weight:bold;}
.carr.open{transform:rotate(180deg);}
.cbody{overflow:hidden;transition:max-height 0.3s ease;}
.opt-box{background:var(--white);border:1px solid var(--border);border-radius:16px;padding:24px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.02);}
.opt-box hr.div{margin:24px -24px;border-top:1px solid var(--bg);border-bottom:none;}
.opt-box .invi{width:110px !important;border-radius:12px;padding:10px 16px !important;text-align:right;background:var(--white);border:1px solid var(--border);transition:all 0.2s;font-family:'JetBrains Mono',monospace;height:auto;}
.opt-box .invi:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--bbg);}
.opt-box .invr{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;}
.opt-box .invr:last-child{margin-bottom:0;}
.opt-box .invl{color:var(--text2);font-size:14px;font-weight:500;line-height:1.4;flex:1;}
.combobox{position:relative;width:100%;}
.combo-input{width:100%;background:var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") no-repeat right 16px center;background-size:16px;border:1px solid var(--border);border-radius:var(--rs);padding:12px 40px 12px 16px;color:var(--text);font-family:'Inter',sans-serif;font-size:14px;font-weight:500;outline:none;transition:all 0.2s ease;box-sizing:border-box;cursor:text;}
.combo-input:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--bbg);}
.combo-input::placeholder{color:var(--text3);font-weight:400;}
.combo-menu{position:absolute;top:calc(100% + 4px);left:0;width:100%;background:var(--white);border:1px solid var(--border);border-radius:var(--rs);box-shadow:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);max-height:280px;overflow-y:auto;z-index:1000;display:none;opacity:0;transition:opacity 0.2s;}
.combo-menu.show{display:block;opacity:1;}
.combo-group{padding:8px 16px;font-size:11px;font-family:'JetBrains Mono',monospace;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:0.05em;background:var(--bg);position:sticky;top:0;z-index:2;border-bottom:1px solid var(--border);}
.combo-item{padding:10px 16px;font-size:14px;color:var(--text);cursor:pointer;transition:background 0.15s;}
.combo-item:hover{background:var(--bbg);color:var(--blue);}

/* ── RESULTS ── */
.mob-action{display:none;width:100%;padding:16px;background:var(--text);color:white;border:none;border-radius:var(--rs);font-family:'Inter',sans-serif;font-size:15px;font-weight:600;cursor:pointer;transition:background 0.2s;box-shadow:0 4px 6px -1px rgba(0,0,0,0.1);margin-top:12px;}
.mob-action:hover{background:#1e293b;}
.mob-action.sec{background:var(--white);color:var(--text);border:1px solid var(--border);box-shadow:none;margin-bottom:24px;margin-top:0;}
.mhd{margin-bottom:32px;}
.mtitle{font-size:32px;font-weight:800;letter-spacing:-0.03em;line-height:1.2;color:var(--text);}
.msub{font-size:15px;color:var(--text2);margin-top:6px;}
.empty{text-align:center;padding:80px 20px;color:var(--text3);background:var(--white);border:2px dashed var(--border);border-radius:var(--r);}
.ei{font-size:40px;margin-bottom:16px;opacity:0.5;}
.et{font-size:15px;font-family:'JetBrains Mono',monospace;line-height:1.7;font-weight:500;}
.hero{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:32px;margin-bottom:24px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.02);}
.hgrid{display:grid;grid-template-columns:repeat(3,1fr);}
.hi{padding-right:24px;border-right:1px solid var(--border);}
.hi:first-child{padding-left:0;}
.hi:nth-child(2){padding-left:24px;}
.hi:last-child{border-right:none;padding-right:0;padding-left:24px;}
.hl{font-size:12px;font-family:'JetBrains Mono',monospace;color:var(--text3);font-weight:600;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:12px;}
.hv{font-size:36px;font-weight:800;letter-spacing:-0.03em;line-height:1;}
.hv.g{color:var(--green);}.hv.r{color:var(--red);}.hv.a{color:var(--amber);}
.hn{font-size:13px;color:var(--text3);margin-top:8px;font-family:'JetBrains Mono',monospace;font-weight:500;}
@media(max-width:600px){
  .hero{padding:24px 20px;}
  .hgrid{grid-template-columns:1fr 1fr;gap:12px;}
  .hi{border:none !important;padding:0 !important;min-width:0;}
  .hi:nth-child(3){grid-column:1 / -1;border-top:1px solid var(--border) !important;padding-top:16px !important;margin-top:4px;}
  .hl{font-size:11px;letter-spacing:0.05em;}
  .hv{font-size:24px;word-break:break-word;}
  .mtitle{font-size:24px;}
}
.sbar{margin-top:32px;padding-top:24px;border-top:1px solid var(--border);}
.btrack{height:10px;background:var(--bg);border-radius:5px;overflow:hidden;display:flex;margin-bottom:16px;}
.bfill{height:100%;transition:width 0.5s cubic-bezier(0.4,0,0.2,1);}
.bleg{display:flex;gap:20px;flex-wrap:wrap;}
.bli{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text2);font-family:'JetBrains Mono',monospace;font-weight:500;}
.bld{width:10px;height:10px;border-radius:50%;}
.pgrid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px;}
@media(max-width:1080px){.pgrid{grid-template-columns:1fr;}}
.panel{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:24px 32px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.02);}
@media(max-width:600px){.panel{padding:20px;}}
.pt{font-size:12px;font-family:'JetBrains Mono',monospace;color:var(--text3);font-weight:600;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border);}
.brow{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--bg);font-size:14px;}
.brow:last-child{border-bottom:none;}
.bl2{color:var(--text2);font-weight:500;}
.bv{font-family:'JetBrains Mono',monospace;font-weight:600;}
.bv.neg{color:var(--red);}.bv.pos{color:var(--green);}.bv.hi{color:var(--text);}
.brow.st{background:var(--bg);margin:6px -12px;padding:12px;border-radius:8px;border-bottom:none;}
.brow.st .bl2,.brow.st .bv{font-weight:700;color:var(--text);}
.brow.tot{border-top:2px solid var(--border);border-bottom:none;padding-top:16px;margin-top:8px;}
.brow.tot .bl2{font-weight:700;font-size:16px;color:var(--text);}.brow.tot .bv{font-size:18px;color:var(--green);}
.cbr{margin-bottom:16px;}
.cbh{display:flex;justify-content:space-between;margin-bottom:8px;font-size:14px;font-weight:500;}
.cbl{color:var(--text2);}.cbv{font-family:'JetBrains Mono',monospace;color:var(--text);font-weight:600;}
.cbt{height:6px;background:var(--bg);border-radius:3px;overflow:hidden;}
.cbf{height:100%;border-radius:3px;transition:width 0.5s cubic-bezier(0.4,0,0.2,1);}
.slr{display:grid;grid-template-columns:1fr 60px 100px;align-items:center;padding:12px 0;border-bottom:1px solid var(--bg);font-size:14px;font-family:'JetBrains Mono',monospace;}
.slr:last-child{border-bottom:none;}
.slr.asl{background:var(--gbg);padding:12px;border-radius:8px;margin:4px -12px;border-bottom:none;}
.slr.asl .sr{color:var(--green);font-weight:700;}
.slrange{color:var(--text2);font-weight:500;}.sr{color:var(--text);text-align:right;font-weight:600;}.sltax{color:var(--text);text-align:right;font-weight:600;}
.sitem{display:flex;justify-content:space-between;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--bg);gap:16px;}
.sitem:last-child{border-bottom:none;}
.sil{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px;}
.sin{font-size:13px;color:var(--text3);font-family:'Inter',sans-serif;line-height:1.5;}
.siamt{text-align:right;flex-shrink:0;}
.sisave{font-family:'JetBrains Mono',monospace;font-size:15px;font-weight:700;color:var(--green);}
.siinv{font-size:12px;color:var(--text3);font-family:'JetBrains Mono',monospace;margin-top:4px;font-weight:500;}
.tag{display:inline-block;padding:4px 10px;background:#f1f5f9;border-radius:6px;font-size:12px;font-family:'JetBrains Mono',monospace;color:var(--text2);font-weight:600;letter-spacing:0.02em;}
.tag.g{background:var(--gbg);color:var(--green);}.tag.a{background:var(--abg);color:var(--amber);}.tag.b{background:var(--bbg);color:var(--blue);}.tag.r{background:var(--rbg);color:var(--red);}
.ibox{background:var(--bbg);border:1px solid rgba(29,78,216,.15);border-radius:var(--rs);padding:16px;font-size:13px;color:var(--text2);font-family:'JetBrains Mono',monospace;line-height:1.6;margin-top:16px;font-weight:500;}
.sbox{background:var(--gbg);border:1px solid rgba(21,128,61,.2);border-radius:var(--rs);padding:16px;font-size:13px;color:var(--green);font-family:'JetBrains Mono',monospace;line-height:1.6;font-weight:600;}
.disc{background:#f8fafc;border:1px solid var(--border);border-radius:var(--rs);padding:16px 20px;font-size:13px;color:var(--text3);line-height:1.7;margin-bottom:24px;margin-top:24px;}
.disc strong{color:var(--text2);font-weight:600;}
.aipanel{background:var(--white);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;margin-bottom:24px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.02);}
.aihd{display:flex;align-items:center;justify-content:space-between;padding:20px 32px;border-bottom:1px solid var(--border);}
.aihl{display:flex;align-items:center;gap:12px;}
.aidot{width:10px;height:10px;border-radius:50%;background:var(--green);animation:blink 2s infinite;}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:0.3;}}
.aititle{font-size:16px;font-weight:700;color:var(--text);}
.aipow{font-size:12px;color:var(--text3);font-family:'JetBrains Mono',monospace;font-weight:500;}
.aimsgs{padding:24px 32px;min-height:100px;max-height:350px;overflow-y:auto;}
.aibub{background:var(--bg);border:1px solid var(--border);border-radius:16px 16px 16px 4px;padding:16px 20px;font-size:15px;line-height:1.7;color:var(--text);margin-bottom:16px;max-width:90%;animation:fadeInBub 0.2s ease;}
@keyframes fadeInBub{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:translateY(0);}}
.aibub.loading{display:flex;align-items:center;padding:16px 20px;}
.dp span{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--text3);animation:dp 1.2s infinite;margin:0 3px;}
.dp span:nth-child(2){animation-delay:0.2s;}.dp span:nth-child(3){animation-delay:0.4s;}
@keyframes dp{0%,100%{opacity:0.3;transform:scale(0.8);}50%{opacity:1;transform:scale(1);}}
.aiacts{padding:0 32px 24px;display:flex;flex-wrap:wrap;gap:10px;}
.aibtn{padding:10px 16px;background:var(--white);border:1px solid var(--border);border-radius:20px;font-size:14px;font-family:'Inter',sans-serif;font-weight:500;color:var(--text);cursor:pointer;transition:all 0.2s;white-space:nowrap;box-shadow:0 1px 2px rgba(0,0,0,0.02);}
.aibtn:hover{background:var(--text);color:white;border-color:var(--text);}
.aibtn:disabled{opacity:0.4;cursor:not-allowed;}
.rvhero{background:var(--white);border:1px solid var(--border);border-radius:var(--r);padding:32px;margin-bottom:24px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.02);}
.rvlbl{font-size:12px;font-family:'JetBrains Mono',monospace;color:var(--text3);font-weight:600;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:12px;}
.rvval{font-size:48px;font-weight:800;letter-spacing:-0.03em;line-height:1;color:var(--text);}
@media(max-width:600px){.rvval{font-size:36px;word-break:break-word;}}
.bbtn{width:100%;padding:16px;background:var(--text);color:white;border:none;border-radius:var(--rs);font-family:'Inter',sans-serif;font-size:15px;font-weight:600;cursor:pointer;transition:background 0.2s;margin-top:12px;box-shadow:0 4px 6px -1px rgba(0,0,0,0.1);}
.bbtn:hover{background:#1e293b;}

/* ── SEO CONTENT ── */
.seo-section{max-width:780px;margin:60px auto 0;padding:0 8px;}
.seo-section h2{font-size:22px;font-weight:700;color:var(--text);margin-bottom:14px;letter-spacing:-0.02em;}
.seo-section p{font-size:14px;color:var(--text2);line-height:1.8;margin-bottom:14px;}
.seo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:48px;}
.seo-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;}
.seo-card-val{font-size:22px;font-weight:800;margin-bottom:4px;}
.seo-card-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:6px;}
.seo-card-desc{font-size:13px;color:var(--text2);line-height:1.6;}
.seo-block{margin-bottom:40px;}

/* ── FAQ ── */
.faq-wrap{display:flex;flex-direction:column;gap:0;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:none;}
.faq-q{width:100%;background:none;border:none;text-align:left;padding:18px 20px;font-size:15px;font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:'Inter',sans-serif;transition:background 0.15s;}
.faq-q:hover{background:var(--bg);}
.faq-chevron{flex-shrink:0;transition:transform 0.2s;color:var(--text3);font-size:12px;}
.faq-item.open .faq-chevron{transform:rotate(180deg);}
.faq-a{display:none;padding:0 20px 18px;font-size:14px;color:var(--text2);line-height:1.75;}
.faq-item.open .faq-a{display:block;}

/* ── FOOTER ── */
.site-footer{background:var(--text);color:rgba(255,255,255,0.5);text-align:center;padding:32px 20px;font-size:12px;line-height:2;margin-top:80px;}
.site-footer a{color:rgba(255,255,255,0.7);text-decoration:none;}
.site-footer a:hover{color:#fff;}
.footer-links{display:flex;justify-content:center;gap:20px;margin-bottom:12px;flex-wrap:wrap;}

::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px;border:2px solid var(--bg);}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}