:root{
  --bg:#f6f8fc;--surface:#fff;--ink:#182235;--muted:#6b778c;--line:#e2e8f0;
  --brand:#2563eb;--brand-dark:#1d4ed8;--brand-soft:#eef4ff;--success:#157347;--danger:#b42318;
  --shadow:0 14px 40px rgba(19,34,58,.08);--radius:18px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
body,button,input,select,textarea{font-synthesis:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.container{width:min(1180px,100% - 40px);margin:auto}

.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-wrap{min-height:72px;display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.2);font-size:16px}
.brand-name{font-size:20px;font-weight:850;letter-spacing:-.035em}
.nav{display:flex;align-items:center;gap:20px;flex:1;min-width:0}
.nav-main{display:flex;align-items:center;gap:4px;flex:1}
.nav a{display:inline-flex;align-items:center;gap:8px;padding:9px 11px;border-radius:11px;color:#445167;font-size:14px;font-weight:650;transition:background .16s,color .16s,transform .16s}
.nav a i{font-size:13px}
.nav-main a:hover,.auth-nav a:not(.btn):hover{background:var(--brand-soft);color:var(--brand)}
.auth-nav{display:flex;align-items:center;gap:6px}
.auth-nav .btn{gap:8px}
.user-pill{display:inline-flex;align-items:center;gap:8px;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:13px;padding:8px 9px}
.nav-login{box-shadow:0 8px 16px rgba(37,99,235,.17)}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);width:42px;height:42px;border-radius:12px;font-size:18px;cursor:pointer}

.hero{padding:88px 0 64px;background:radial-gradient(circle at 82% 30%,#e8f0ff 0,rgba(232,240,255,0) 28%),linear-gradient(180deg,#f1f5ff,#f6f8fc 72%);border-bottom:1px solid var(--line)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(300px,.68fr);gap:54px;align-items:center}
.eyebrow{display:inline-block;color:var(--brand);font-size:11px;font-weight:850;letter-spacing:.14em;text-transform:uppercase;margin-bottom:8px}
.hero h1{font-size:clamp(46px,7vw,78px);line-height:1.02;letter-spacing:-.055em;margin:0 0 18px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p{font-size:18px;color:var(--muted);max-width:720px;margin:0}
.hero-actions{display:flex;gap:10px;margin:26px 0 14px}
.micro{font-size:12px!important;display:flex;align-items:center;gap:7px}
.micro i{color:var(--success)}
.hero-card{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:22px;padding:22px;display:flex;gap:15px;box-shadow:var(--shadow)}
.hero-icon,.tool-symbol{display:grid;place-items:center;flex:none;width:50px;height:50px;border-radius:14px;background:var(--brand-soft);color:var(--brand);font-size:18px}
.hero-card b{font-size:16px}.hero-card p{font-size:13px;margin-top:3px}

.section{padding:72px 0}.section-alt{background:#fff}
.section-head{max-width:800px;margin-bottom:30px}.section-head h1{margin:0}.section-head h2{font-size:37px;line-height:1.12;letter-spacing:-.035em;margin:0 0 10px}.section-head p{color:var(--muted);margin:0}
.tool-group{margin-top:34px}.tool-group h3{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#748096;margin:0 0 12px}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:16px;display:flex;gap:13px;align-items:center;min-width:0;transition:transform .18s,box-shadow .18s,border-color .18s}
.tool-card:hover{transform:translateY(-2px);box-shadow:0 15px 30px rgba(19,34,58,.08);border-color:#cad8ed}
.tool-card-copy{min-width:0}.tool-card strong{display:block;margin-bottom:3px;font-size:14px}.tool-card span{display:block;color:var(--muted);font-size:12px;line-height:1.45}.tool-card .arrow{margin-left:auto;color:#8290a5;font-size:13px;flex:none}.tool-card:hover .arrow{color:var(--brand)}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:start}
.feature-grid>div>p{color:var(--muted);max-width:620px}.feature-list{display:grid;gap:10px}
.feature-list>div{display:flex;gap:12px;padding:15px 0;border-bottom:1px solid #edf1f6}.feature-list>div:last-child{border-bottom:0}.feature-icon{display:grid;place-items:center;width:38px;height:38px;flex:none;background:var(--brand-soft);border-radius:11px;color:var(--brand)}
.feature-list b{display:block;font-size:14px}.feature-list span{display:block;color:var(--muted);font-size:13px}

.page{padding:52px 0 76px}.page h1{font-size:48px;line-height:1.08;letter-spacing:-.045em;margin:0 0 10px}.page h2{letter-spacing:-.025em}.prose-page{max-width:860px}.prose{max-width:820px}.prose p{color:var(--muted)}.prose h2{font-size:24px;margin:32px 0 8px}
.breadcrumbs{display:flex;align-items:center;gap:8px;color:#7a8699;font-size:12px;margin-bottom:17px}.breadcrumbs a{display:inline-flex;align-items:center;gap:6px;color:#59677c}.breadcrumbs a:hover{color:var(--brand)}
.narrow{max-width:700px}.auth-page{padding-top:62px}.auth-intro{margin-bottom:20px}.auth-intro p{margin:0;color:var(--muted)}

.tool-shell{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1fr);gap:36px;align-items:start}.tool-title-icon{display:grid;place-items:center;width:52px;height:52px;background:var(--brand-soft);color:var(--brand);border-radius:15px;font-size:20px;margin-bottom:17px}.tool-intro h1{font-size:50px;line-height:1.06;letter-spacing:-.05em;margin:0 0 12px}.tool-intro>p{color:var(--muted);font-size:17px;max-width:620px}.capability-note{display:flex;align-items:flex-start;gap:9px;margin-top:20px;background:#fff;border:1px solid var(--line);padding:13px 14px;border-radius:13px;font-size:13px;color:#59677b}.capability-note i{color:var(--brand);margin-top:3px}
.tool-form,.card-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 10px 28px rgba(19,34,58,.045)}
.dropzone{border:2px dashed #c7d4e6;border-radius:17px;padding:30px 18px;text-align:center;display:grid;gap:6px;cursor:pointer;background:#fbfdff;transition:border-color .16s,background .16s,transform .16s}
.dropzone.drag,.dropzone:hover{border-color:#8aaeea;background:#f8fbff}.dropzone input{display:none}.drop-icon{font-size:26px;color:var(--brand);margin-bottom:2px}.dropzone b{font-size:14px}.drop-action{font-size:13px;color:var(--brand);font-weight:750}.dropzone small{color:var(--muted);font-size:11px}.file-list{font-size:12px;color:#405067;line-height:1.45;overflow-wrap:anywhere}
.field{margin-top:16px}.field label,.card-form label{display:grid;gap:7px;font-size:13px;font-weight:750;color:#344259}.field input,.field select,.card-form input,.card-form textarea{width:100%;padding:12px 13px;border:1px solid #cdd7e5;border-radius:11px;font:inherit;background:#fff;color:var(--ink);outline:none;transition:border-color .15s,box-shadow .15s}.field input:focus,.field select:focus,.card-form input:focus,.card-form textarea:focus{border-color:#82aef3;box-shadow:0 0 0 4px rgba(37,99,235,.09)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;padding:11px 16px;border:1px solid transparent;font-weight:800;font-size:14px;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.btn:not(:disabled):active{transform:translateY(1px)}.btn-primary{background:var(--brand);color:#fff;box-shadow:0 9px 18px rgba(37,99,235,.16)}.btn-primary:hover:not(:disabled){background:var(--brand-dark)}.btn-ghost{background:#fff;border-color:var(--line);color:#445167}.btn-ghost:hover:not(:disabled){background:#f8fafc}.btn-sm{padding:8px 11px;font-size:12px}.btn-full{width:100%;margin-top:18px}.form-note{display:flex;justify-content:center;gap:7px;color:var(--muted);font-size:13px}.form-note a{color:var(--brand);font-weight:700}.form-note a:hover{text-decoration:underline}
.alert{display:flex;align-items:center;gap:9px;margin-top:14px;padding:12px 16px;border-radius:12px;border:1px solid;font-size:13px}.alert i{font-size:15px}.alert.success{background:#effaf4;border-color:#c6ebd5;color:#126a40}.alert.error{background:#fff3f2;border-color:#f3d0ca;color:#9d2b20}

.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.guide-grid section{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 8px 24px rgba(19,34,58,.04)}.guide-group-title{display:flex;align-items:center;gap:10px;margin-bottom:8px}.guide-group-title h2{font-size:18px;margin:0}.group-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand)}.guide-grid article{padding:10px 0;border-top:1px solid #edf1f6}.guide-grid article:first-of-type{border-top:0}.guide-grid article a{display:flex;align-items:center;gap:10px;font-size:13px}.guide-grid article a>i:last-child{margin-left:auto;color:#8b97a8;font-size:11px}.guide-grid article p{color:var(--muted);font-size:12px;margin:5px 0 0 30px}.guide-icon{color:var(--brand);width:20px;text-align:center}

.site-footer{background:#121a28;color:#cbd5e1;padding:34px 0 18px}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer-brand{display:inline-flex;align-items:center;gap:9px;color:#fff}.footer-brand .brand-mark{width:34px;height:34px;font-size:14px}.footer-grid p{color:#94a1b4;font-size:13px;margin:10px 0 0}.footer-links{display:flex;align-items:flex-start;gap:18px}.footer-links a{color:#c7d0de;font-size:13px}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:14px;margin-top:22px;color:#8491a5;font-size:12px}

.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:24px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px}.stat span{display:block;color:var(--muted);font-size:12px}.stat b{font-size:30px;line-height:1.1}.table-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}.table-card h2{font-size:18px;margin:0 0 12px}.table-wrap{overflow:auto}.table-card table{width:100%;border-collapse:collapse;font-size:13px}.table-card th,.table-card td{text-align:left;padding:10px;border-bottom:1px solid #e8eef5;vertical-align:top}.status{font-weight:800}.status.completed{color:var(--success)}.status.failed{color:var(--danger)}
.error-page{text-align:center}.error-icon{display:grid;place-items:center;width:68px;height:68px;margin:0 auto 16px;background:var(--brand-soft);color:var(--brand);border-radius:18px;font-size:24px}.error-page p{color:var(--muted);margin-bottom:20px}

@media(max-width:980px){
  .nav-toggle{display:grid;place-items:center;margin-left:auto}.nav{display:none;position:absolute;left:20px;right:20px;top:68px;flex-direction:column;align-items:stretch;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 18px 36px rgba(19,34,58,.12)}
  .nav.is-open{display:flex}.nav-main{display:grid;gap:2px}.nav-main a,.auth-nav a{padding:11px 12px}.auth-nav{display:grid;gap:2px;border-top:1px solid #edf1f6;padding-top:8px}.auth-nav .user-pill{max-width:none;padding:9px 12px}.auth-nav .btn{width:100%}
  .hero-inner,.tool-shell,.feature-grid{grid-template-columns:1fr}.hero{padding-top:62px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:640px){
  .container{width:min(100% - 24px,1180px)}.brand-name{font-size:19px}.brand-mark{width:36px;height:36px}.hero{padding:52px 0 44px}.hero h1{font-size:46px}.hero p{font-size:16px}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}.hero-card{padding:18px}.section{padding:54px 0}.section-head h2{font-size:30px}.tool-grid,.guide-grid,.stat-grid,.two{grid-template-columns:1fr}.page{padding:38px 0 58px}.page h1,.tool-intro h1{font-size:38px}.tool-form,.card-form{padding:15px;border-radius:16px}.footer-grid{flex-direction:column}.footer-links{flex-wrap:wrap}.breadcrumbs{overflow:auto;white-space:nowrap}.nav{left:12px;right:12px}.tool-card{padding:14px}.tool-symbol{width:44px;height:44px}
}