:root{
  --bg:#f6f8fc;--surface:#fff;--surface-2:#f9fafc;--text:#111827;--muted:#667085;
  --line:#e5e7eb;--line-strong:#d8dee8;--brand:#635bff;--brand-strong:#5148e8;--brand-soft:#eeecff;
  --green:#087443;--green-soft:#eaf8f0;--shadow:0 10px 35px rgba(16,24,40,.06);--shadow-lg:0 20px 60px rgba(16,24,40,.09);
  --radius:18px;--radius-sm:12px;--max:1160px
}
*{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",sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,select{font:inherit}
.wrap{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(246,248,252,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(229,231,235,.85)}
.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:850;letter-spacing:-.035em}
.brand-mark{width:32px;height:32px;border-radius:10px;background:linear-gradient(145deg,var(--brand),#8b83ff);color:#fff;display:grid;place-items:center;box-shadow:0 7px 18px rgba(99,91,255,.24);font-size:14px}
.nav nav{display:flex;gap:5px;align-items:center;flex-wrap:wrap}
.nav nav a{padding:8px 11px;border-radius:10px;font-size:13px;font-weight:650;color:#667085}.nav nav a:hover{background:#fff;color:var(--text)}
.header-cta{padding:9px 12px!important;background:#111827!important;color:#fff!important}.header-cta:hover{background:#1f2937!important}
.hero{padding:92px 0 62px}.hero-shell{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-strong)}
.eyebrow:before{content:"";width:24px;height:2px;background:currentColor;border-radius:2px}
.hero h1{font-size:clamp(42px,6vw,72px);line-height:.98;letter-spacing:-.06em;margin:16px 0 20px;max-width:760px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:680px;margin:0}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line-strong);background:#fff;color:var(--text);border-radius:12px;padding:11px 15px;font-weight:750;cursor:pointer;transition:.18s ease;box-shadow:0 1px 1px rgba(16,24,40,.02)}
.btn:hover{transform:translateY(-1px);border-color:#c7ced9;box-shadow:0 6px 18px rgba(16,24,40,.08)}
.btn.primary{background:#111827;color:#fff;border-color:#111827}.btn.primary:hover{background:#1f2937;border-color:#1f2937}
.btn.brand{background:var(--brand);border-color:var(--brand);color:#fff}.btn.brand:hover{background:var(--brand-strong);border-color:var(--brand-strong)}
.btn.ghost{background:transparent}.btn.small{padding:8px 11px;border-radius:9px;font-size:12px}
.hero-card{background:linear-gradient(180deg,#fff,#fbfbff);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-lg)}
.mini-label{font-size:12px;font-weight:750;color:var(--muted);margin-bottom:9px}.mini-inputs{display:grid;grid-template-columns:1fr 24px 1fr;gap:8px;align-items:end}
.mini-input{padding:12px 13px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;font-size:17px;font-weight:700;outline:none}.mini-input:focus{border-color:#a8a2ff;box-shadow:0 0 0 4px rgba(99,91,255,.10)}
.mini-op{height:45px;display:grid;place-items:center;color:#98a2b3;font-weight:800}.mini-result{margin-top:15px;background:#111827;color:#fff;border-radius:15px;padding:17px}.mini-result .muted{color:#aeb6c5}.mini-result strong{display:block;font-size:31px;line-height:1.1;margin-top:3px;letter-spacing:-.04em}
.section{padding:24px 0 80px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:20px}.section-head h2{margin:0;font-size:28px;letter-spacing:-.035em}.section-head p{margin:5px 0 0;color:var(--muted)}
.tool-grid-home{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.tool-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:19px;transition:.18s ease}.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d6d9e0}.tool-icon{width:38px;height:38px;border-radius:11px;background:var(--brand-soft);color:var(--brand-strong);display:grid;place-items:center;font-weight:850;font-size:15px}.tool-card h3{font-size:16px;letter-spacing:-.015em;margin:15px 0 8px}.tool-card p{font-size:13px;color:var(--muted);margin:0}.tool-card .arrow{display:inline-block;margin-top:15px;color:#98a2b3;font-weight:800}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.feature{background:#fff;border:1px solid var(--line);border-radius:17px;padding:21px}.feature h3{margin:11px 0 7px;font-size:16px}.feature p{margin:0;color:var(--muted);font-size:13px}.feature .dot{width:34px;height:34px;border-radius:10px;background:var(--surface-2);display:grid;place-items:center;font-weight:800}
.table-wrap{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:auto;box-shadow:0 2px 8px rgba(16,24,40,.02)}table{width:100%;border-collapse:collapse;min-width:620px}th,td{text-align:left;padding:13px 15px;border-bottom:1px solid #eef0f3;font-size:13px}th{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#98a2b3;background:#fbfcfe}tbody tr:last-child td{border-bottom:0}tbody tr:hover td{background:#fcfcff}
.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;font-size:11px;font-weight:800;background:var(--brand-soft);color:var(--brand-strong)}
.site-footer{margin-top:20px;padding:30px 0;border-top:1px solid var(--line);background:#fff;color:#7b8494}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:12px}.footer-links{display:flex;gap:16px}.footer-links a:hover{color:var(--text)}
.tool-page{padding:54px 0 78px}.tool-head{max-width:820px;margin-bottom:25px}.tool-head h1{font-size:clamp(37px,5vw,58px);line-height:1.01;letter-spacing:-.055em;margin:12px 0 14px}.tool-head .desc{font-size:17px;color:var(--muted);margin:0}
.tool-layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:18px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:23px;box-shadow:var(--shadow)}
.panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.panel h2{font-size:18px;letter-spacing:-.02em;margin:0}.panel-sub{font-size:12px;color:#98a2b3}
.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.field{min-width:0}.field.full{grid-column:1/-1}.field label{display:flex;justify-content:space-between;gap:10px;font-size:12px;font-weight:800;color:#475467;margin-bottom:7px}.field input,.field select{width:100%;height:46px;padding:0 12px;border:1px solid var(--line-strong);border-radius:11px;background:#fff;color:var(--text);outline:none}.field input:focus,.field select:focus{border-color:#a8a2ff;box-shadow:0 0 0 4px rgba(99,91,255,.10)}
.input-note{font-size:11px;color:#98a2b3;margin-top:6px}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}
.result-card{margin-top:16px;border:1px solid #dcd9ff;background:linear-gradient(180deg,#faf9ff,#f6f5ff);border-radius:15px;padding:19px}.result-label{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#7a74d7}.result-big{font-size:39px;line-height:1.05;font-weight:880;letter-spacing:-.05em;margin-top:6px}.result-big.sm{font-size:27px}.result-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}.pill{display:inline-flex;align-items:center;gap:5px;padding:6px 9px;border-radius:999px;border:1px solid #dedee8;background:#fff;font-size:11px;color:#667085}.pill strong{color:#111827}
.preview-panel{position:sticky;top:92px}.ratio-stage{min-height:310px;border:1px solid var(--line);border-radius:15px;background:repeating-conic-gradient(#f6f7fa 0 25%,#fff 0 50%) 0/20px 20px;display:grid;place-items:center;padding:22px;overflow:hidden}.ratio-frame{width:min(92%,420px);aspect-ratio:16/9;background:linear-gradient(135deg,#111827,#394150);border-radius:12px;display:grid;place-items:center;color:#fff;font-size:20px;font-weight:850;box-shadow:0 18px 36px rgba(16,24,40,.18);transition:aspect-ratio .18s ease}.stage-note{text-align:center;color:#98a2b3;font-size:12px;margin-top:12px}
.preset-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.preset{border:1px solid var(--line);background:#fff;border-radius:10px;padding:7px 9px;font-size:11px;font-weight:750;color:#596274;cursor:pointer}.preset:hover,.preset.active{border-color:#b8b3ff;background:var(--brand-soft);color:var(--brand-strong)}
.info-section{padding-top:26px}.content-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:23px}.content-card h2{margin:0 0 10px;font-size:25px;letter-spacing:-.03em}.content-card p{margin:0;color:#667085;font-size:14px}.content-card p+p{margin-top:10px}.faq{margin-top:17px}.faq details{background:#fff;border:1px solid var(--line);border-radius:13px;margin:9px 0;padding:13px 15px}.faq summary{font-weight:750;cursor:pointer}.faq p{margin:10px 0 0;color:var(--muted);font-size:13px}
.dropzone{display:block;border:1.5px dashed #cbd3df;border-radius:15px;padding:36px 20px;text-align:center;background:#fbfcfe;cursor:pointer;transition:.18s}.dropzone:hover,.dropzone.drag{border-color:#a8a2ff;background:#faf9ff}.drop-icon{width:44px;height:44px;margin:0 auto 12px;border-radius:13px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand-strong);font-weight:900}.dropzone strong{font-size:14px}.dropzone .notice{color:#98a2b3;font-size:12px;margin-top:5px}.dropzone input{display:none}
.image-preview{background:#f7f8fa;border:1px solid var(--line);border-radius:15px;min-height:310px;display:grid;place-items:center;padding:16px;overflow:hidden}.image-preview img{max-width:100%;max-height:420px;display:block;border-radius:8px}.empty-preview{color:#98a2b3;text-align:center;font-size:13px}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin-top:15px}.stat{padding:12px;background:#fafbfc;border:1px solid #eef0f3;border-radius:11px}.stat span{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#98a2b3;font-weight:800}.stat strong{display:block;margin-top:3px;font-size:15px}
.filter-bar{display:grid;grid-template-columns:1fr 1fr;gap:11px}.table-actions{text-align:right}.copy-btn{border:1px solid #e1e4ea;background:#fff;border-radius:9px;padding:7px 9px;font-size:11px;font-weight:800;cursor:pointer}.copy-btn:hover{background:#f7f7fb}
.kpi-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:24px}.kpi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px}.kpi strong{display:block;font-size:23px;letter-spacing:-.03em}.kpi span{font-size:11px;color:var(--muted)}
.notice-box{background:var(--green-soft);border:1px solid #d7f0e1;color:#166534;padding:12px 13px;border-radius:11px;font-size:12px;margin-top:14px}
hr{border:0;border-top:1px solid #eef0f3;margin:18px 0}
[hidden]{display:none!important}
@media (max-width:1020px){.hero-shell{grid-template-columns:1fr}.hero-card{max-width:620px}.tool-grid-home{grid-template-columns:repeat(2,1fr)}.tool-layout{grid-template-columns:1fr}.preview-panel{position:static}.feature-grid{grid-template-columns:1fr}}
@media (max-width:740px){.wrap{width:min(var(--max),calc(100% - 28px))}.nav{min-height:66px}.nav nav a:nth-child(n+4){display:none}.hero{padding:62px 0 40px}.hero h1{font-size:48px}.hero p.lead{font-size:17px}.section{padding-bottom:60px}.tool-page{padding-top:38px}.tool-head h1{font-size:42px}.fields,.filter-bar{grid-template-columns:1fr}.field.full{grid-column:auto}.kpi-strip{grid-template-columns:1fr}.footer-inner{flex-direction:column;align-items:flex-start}.result-big{font-size:33px}}
@media (max-width:480px){.brand{font-size:17px}.brand-mark{width:30px;height:30px}.nav nav a{padding:7px 8px}.header-cta{display:none!important}.hero h1{font-size:41px}.hero-shell{gap:28px}.hero-card{padding:17px}.tool-grid-home{grid-template-columns:1fr}.tool-card{padding:17px}.panel,.content-card{padding:18px}.ratio-stage,.image-preview{min-height:250px}.section-head{display:block}.section-head p{margin-top:6px}}

.skip-link{position:absolute;left:-9999px;top:auto}.skip-link:focus{left:16px;top:16px;z-index:9999;background:#fff;color:#111827;padding:10px 14px;border-radius:10px;box-shadow:0 6px 24px rgba(0,0,0,.18)}.related-tools .preset{display:inline-flex;text-decoration:none}.seo-intro{padding-top:0}

/* Mobile reliability overrides */
html, body { width: 100%; max-width: 100%; overflow-x: hidden; }
img, svg, video, canvas { max-width: 100%; height: auto; }
input, select, button, textarea { max-width: 100%; }
.wrap, .panel, .content-card, .tool-card, .hero-card, .table-wrap { min-width: 0; }

@media (max-width: 740px) {
  .wrap { width: calc(100% - 24px); }
  .nav { gap: 10px; overflow: hidden; }
  .brand { flex: 0 0 auto; }
  .nav nav {
    min-width: 0;
    flex: 1 1 auto;
    justify-content: flex-end;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    padding-bottom: 2px;
  }
  .nav nav::-webkit-scrollbar { display: none; }
  .nav nav a { flex: 0 0 auto; white-space: nowrap; }
  .hero-shell, .tool-layout, .feature-grid, .tool-grid-home { width: 100%; min-width: 0; }
  .hero h1, .tool-head h1 { max-width: 100%; overflow-wrap: anywhere; }
  .hero p.lead, .tool-head .desc, .content-card p, .tool-card p { overflow-wrap: anywhere; }
  .hero-actions .btn { width: 100%; }
  .hero-card, .panel, .content-card { width: 100%; }
  .mini-inputs { grid-template-columns: minmax(0, 1fr) 18px minmax(0, 1fr); }
  .mini-input { width: 100%; min-width: 0; }
  .fields { grid-template-columns: minmax(0, 1fr); }
  .field.full { grid-column: auto; }
  .actions .btn { flex: 1 1 auto; min-width: 130px; }
  .result-meta, .preset-row { max-width: 100%; }
  .ratio-stage, .image-preview { width: 100%; min-width: 0; }
  .table-wrap { width: 100%; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { min-width: 620px; }
  .section-head { align-items: flex-start; }
  .section-head .btn { margin-top: 12px; }
  .footer-inner { width: 100%; }
}

@media (max-width: 480px) {
  .nav { min-height: 60px; }
  .brand { font-size: 16px; gap: 7px; }
  .brand-mark { width: 28px; height: 28px; border-radius: 9px; }
  .nav nav a { padding: 7px 9px; font-size: 12px; }
  .hero { padding: 44px 0 32px; }
  .hero h1 { font-size: clamp(34px, 11vw, 43px); line-height: 1.02; }
  .hero p.lead { font-size: 16px; }
  .hero-actions { gap: 8px; }
  .hero-card { border-radius: 18px; padding: 15px; }
  .mini-inputs { gap: 5px; grid-template-columns: minmax(0, 1fr) 14px minmax(0, 1fr); }
  .mini-input { padding: 10px; font-size: 16px; }
  .section { padding-bottom: 48px; }
  .section-head h2 { font-size: 24px; }
  .tool-page { padding: 30px 0 58px; }
  .tool-head h1 { font-size: clamp(34px, 10vw, 40px); }
  .tool-head .desc { font-size: 15px; }
  .panel, .content-card { padding: 15px; border-radius: 15px; }
  .panel-top { align-items: flex-start; }
  .panel-top .badge { flex: 0 0 auto; }
  .field input, .field select { height: 44px; }
  .actions { width: 100%; }
  .actions .btn { width: 100%; min-width: 0; }
  .result-big { font-size: 30px; overflow-wrap: anywhere; }
  .result-big.sm { font-size: 24px; }
  .stats-grid { grid-template-columns: 1fr; }
  .ratio-stage, .image-preview { min-height: 220px; padding: 14px; }
  .ratio-frame { width: min(92%, 300px); }
  .dropzone { padding: 28px 14px; }
  .footer-links { flex-wrap: wrap; gap: 10px 14px; }
}