:root{
  --bg:#f7f9fc;
  --surface:#ffffff;
  --surface-soft:#eef4ff;
  --text:#172033;
  --muted:#62708a;
  --line:#dfe6ef;
  --blue:#2563eb;
  --blue-dark:#1d4ed8;
  --green:#15803d;
  --red:#b42318;
  --shadow:0 14px 38px rgba(37,55,92,.10);
}
*{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}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer}
.shell{width:min(1160px,calc(100% - 36px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.nav-row{min-height:66px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;flex-shrink:0}
.site-logo{width:260px;max-width:44vw;height:auto;display:block}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{padding:8px 12px;border-radius:9px;color:#40506b;font-size:14px;font-weight:750}
.main-nav a:hover,.main-nav a.active{background:var(--surface-soft);color:var(--blue)}
.mobile-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 11px;font-weight:800}
.hero{padding:66px 0 50px;background:linear-gradient(180deg,#fff,#f7f9fc)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center}
.breadcrumb{display:inline-block;margin-bottom:16px;color:var(--blue);font-size:13px;font-weight:800}
.eyebrow{display:block;color:var(--blue);font-size:13px;font-weight:850;text-transform:uppercase;letter-spacing:.09em}
h1{margin:12px 0 18px;font-size:clamp(44px,6vw,68px);line-height:1.03;letter-spacing:-.052em}
h2{margin:6px 0 10px;font-size:clamp(29px,4vw,39px);line-height:1.1;letter-spacing:-.035em}
h3{line-height:1.25}
.lead{max-width:740px;color:var(--muted);font-size:19px}
.hero-card{display:grid;gap:10px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:24px}
.hero-card code{display:block;padding:9px 11px;border-radius:8px;background:#f2f5f9;color:#34415b;font:700 13px ui-monospace,SFMono-Regular,Menlo,monospace}
.section{padding:58px 0}
.section-soft{background:#f0f5fb;border-top:1px solid var(--line)}
.tool-tabs{display:flex;gap:8px;margin-bottom:14px}
.tab{padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:#53617a;font-weight:800}
.tab.active{background:var(--blue);border-color:var(--blue);color:#fff}
.tool-panel{padding:26px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.panel-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:20px}
.panel-heading h2{font-size:30px}
.status-pill{display:inline-flex;padding:7px 10px;border-radius:999px;background:#edf4ff;color:var(--blue);font-size:12px;font-weight:850}
.status-pill.ready{background:#ecfdf3;color:var(--green)}
.status-pill.warning{background:#fff7e8;color:#9a6700}
.field-label{display:block;margin-bottom:7px;font-weight:800}
.input-row{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:9px}
input,textarea{width:100%;border:1px solid #cbd5e1;border-radius:11px;background:#fff;color:var(--text);outline:none}
input{padding:13px 14px;font-size:17px}
textarea{padding:14px;resize:vertical;font:700 13px/1.65 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
input:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.button{padding:11px 15px;border:1px solid var(--line);border-radius:10px;background:#fff;color:#34415b;font-weight:800}
.button.primary{background:var(--blue);border-color:var(--blue);color:#fff}
.button.primary:hover{background:var(--blue-dark)}
.button-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:12px}
.helper{margin:7px 0 0;color:var(--muted);font-size:13px}
.message{margin-top:16px;padding:12px 14px;border-radius:10px}
.message.error{border:1px solid #f2c7c2;background:#fff2f0;color:var(--red)}
.result-area{margin-top:24px}
.result-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.metric-card{padding:16px;border:1px solid var(--line);border-radius:13px;background:#fbfcfe}
.metric-card span{display:block;color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.metric-card strong{display:block;margin-top:6px;font-size:17px}
.details-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:12px}
.detail-card{padding:17px;border:1px solid var(--line);border-radius:13px;background:#fff}
.detail-card h3{margin:0 0 7px;font-size:16px}
.detail-card p{margin:0;color:var(--muted)}
.detail-card code{font:800 16px ui-monospace,SFMono-Regular,Menlo,monospace;color:#24406f}
.detail-heading{display:flex;justify-content:space-between;gap:12px;align-items:center}
.copy-link{padding:5px 8px;border:0;border-radius:7px;background:#edf4ff;color:var(--blue);font-size:12px;font-weight:850}
.bulk-result{margin-top:20px}
.bulk-summary{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;white-space:nowrap}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}
th{background:#f5f8fc;color:#526079;font-size:11px;text-transform:uppercase;letter-spacing:.05em}
tbody tr:last-child td{border-bottom:0}
td code{font-weight:750}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:22px}
.info-grid article{padding:20px;background:#fff;border:1px solid var(--line);border-radius:14px}
.info-grid h3{margin-top:0}
.info-grid p{margin-bottom:0;color:var(--muted)}
.note{margin-top:16px;padding:15px 17px;border:1px solid #d5e2f4;border-radius:12px;background:#fff;color:#53617a}
.footer{min-height:80px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#718098;font-size:13px}
footer{background:#fff;border-top:1px solid var(--line)}
#toast{position:fixed;right:18px;bottom:18px;z-index:50;padding:10px 14px;border-radius:9px;background:#172033;color:#fff;font-weight:800;opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s ease}
#toast.show{opacity:1;transform:translateY(0)}
[hidden]{display:none!important}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .result-summary{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .shell{width:min(100% - 24px,1160px)}
  .main-nav{display:none}
  .mobile-toggle{display:block}
  .main-nav.open{display:flex;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 18px;flex-direction:column;align-items:stretch}
  .input-row{grid-template-columns:1fr}
  .panel-heading{flex-direction:column}
  .result-summary,.details-grid,.info-grid{grid-template-columns:1fr}
  .tool-panel{padding:18px}
  .bulk-summary{align-items:flex-start;flex-direction:column}
}