:root{
  --bg:#f4f7f8;
  --bg-accent:#edf4f3;
  --surface:#ffffff;
  --surface-soft:#f6f8fb;
  --surface-strong:#eef3f7;
  --text:#0f1728;
  --muted:#667085;
  --muted-strong:#475467;
  --border:#e4e7ec;
  --brand:#0f766e;
  --brand-2:#2563eb;
  --brand-soft:rgba(15,118,110,.10);
  --shadow:0 18px 48px rgba(16,24,40,.08);
  --shadow-soft:0 10px 28px rgba(16,24,40,.06);
  --radius:24px;
  --radius-sm:16px;
  --radius-xs:12px;
  --success:#087443;
  --danger:#b42318;
  --nav:rgba(255,255,255,.78);
}
[data-theme="dark"]{
  --bg:#0b1220;
  --bg-accent:#111a2b;
  --surface:#101828;
  --surface-soft:#162033;
  --surface-strong:#1b2740;
  --text:#f8fafc;
  --muted:#98a2b3;
  --muted-strong:#cbd5e1;
  --border:#22314d;
  --brand:#2dd4bf;
  --brand-2:#60a5fa;
  --brand-soft:rgba(45,212,191,.12);
  --shadow:0 18px 52px rgba(0,0,0,.35);
  --shadow-soft:0 10px 24px rgba(0,0,0,.28);
  --nav:rgba(11,18,32,.72);
}
*{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;
  color:var(--text);
  background:
    radial-gradient(circle at 0% 0%, rgba(37,99,235,.06), transparent 24%),
    radial-gradient(circle at 100% 0%, rgba(15,118,110,.06), transparent 26%),
    linear-gradient(180deg,var(--bg-accent) 0%, var(--bg) 220px);
  line-height:1.65;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
img{max-width:100%}
.container{width:min(1180px,calc(100% - 36px));margin:auto}
.hidden{display:none!important}

.site-loader{
  position:fixed; inset:0; z-index:9999; display:grid; place-items:center;
  background:linear-gradient(180deg,var(--bg) 0%, var(--bg-accent) 100%);
  transition:opacity .45s ease, visibility .45s ease;
}
.site-loader.hide{opacity:0; visibility:hidden; pointer-events:none}
.loader-stack{text-align:center}
.loader-mark{
  width:72px;height:72px;margin:0 auto 18px;border-radius:22px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:1.45rem;
  box-shadow:0 18px 36px rgba(15,118,110,.22);
  animation:floatPulse 1.8s ease-in-out infinite;
}
.loader-ring{width:86px;height:86px;margin:-79px auto 12px;border-radius:999px;border:2px solid transparent;border-top-color:rgba(37,99,235,.35);border-left-color:rgba(15,118,110,.35);animation:spin 1.2s linear infinite}
.loader-copy{color:var(--muted);font-size:.94rem}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes floatPulse{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

.site-header{
  position:sticky; top:0; z-index:100;
  background:var(--nav); backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.18);
}
.nav{height:78px;display:flex;align-items:center;gap:22px}
.brand{
  display:flex;align-items:center;gap:12px;min-width:0;
  font-weight:850;letter-spacing:-.035em;font-size:1.1rem
}
.brand-mark{
  width:40px;height:40px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;font-weight:900;
  box-shadow:0 12px 26px rgba(15,118,110,.18)
}
.brand small{display:block;color:var(--muted);font-size:.76rem;font-weight:600;letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-links a{
  color:var(--muted-strong);font-weight:650;font-size:.94rem;
  padding:11px 14px;border-radius:999px;transition:.22s ease
}
.nav-links a:hover{background:var(--surface);color:var(--text)}
.icon-btn{
  width:42px;height:42px;display:grid;place-items:center;flex:0 0 42px;
  border:1px solid var(--border);background:var(--surface);color:var(--text);
  border-radius:14px;cursor:pointer;box-shadow:var(--shadow-soft);transition:.22s ease
}
.icon-btn:hover{transform:translateY(-1px)}
.menu-btn{display:none}

.hero{padding:84px 0 36px; text-align:center; position:relative}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 13px;border:1px solid var(--border);border-radius:999px;
  background:rgba(255,255,255,.72);color:var(--brand);font-size:.82rem;font-weight:800;
  box-shadow:var(--shadow-soft)
}
.hero h1,.tool-hero h1,.legal h1{letter-spacing:-.06em;line-height:1.02;margin:18px 0 14px}
.hero h1{font-size:clamp(2.6rem,6vw,5rem);max-width:950px;margin-inline:auto}
.tool-hero h1{font-size:clamp(2.2rem,5vw,3.9rem)}
.gradient{background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p,.tool-hero p,.section-head p,.content-card p,.content-card li,.footer p,.legal p,.legal li,.side-card p,.side-card li{color:var(--muted)}
.hero p{max-width:740px;margin:0 auto;font-size:1.05rem}
.search-wrap{position:relative;max-width:700px;margin:28px auto 0}
.search-wrap input{
  width:100%;height:62px;border:1px solid var(--border);background:rgba(255,255,255,.9);
  color:var(--text);border-radius:18px;padding:0 20px 0 54px;outline:none;box-shadow:var(--shadow)
}
.search-wrap input:focus{border-color:rgba(37,99,235,.45);box-shadow:0 0 0 4px rgba(37,99,235,.09),var(--shadow)}
.search-ico{position:absolute;left:19px;top:19px;color:var(--muted)}
.trust-row{display:none}

.section{padding:56px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:24px}
.section-head h2{margin:0;font-size:clamp(1.75rem,3vw,2.35rem);letter-spacing:-.04em}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.tool-card,.feature,.tool-panel,.side-card,.content-card,.stat,.metric{
  background:rgba(255,255,255,.86);border:1px solid var(--border);box-shadow:var(--shadow-soft)
}
.tool-card{
  position:relative;display:block;padding:22px;border-radius:22px;min-height:184px;
  overflow:hidden;transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease
}
.tool-card::before{
  content:"";position:absolute;inset:auto -40px -40px auto;width:110px;height:110px;border-radius:50%;
  background:radial-gradient(circle, rgba(15,118,110,.08), transparent 70%);
}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(37,99,235,.28)}
.tool-icon{
  width:50px;height:50px;border-radius:16px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(15,118,110,.14),rgba(37,99,235,.14));
  color:var(--brand);font-weight:900;margin-bottom:16px
}
.tool-card h3{margin:0 0 8px;font-size:1.08rem;letter-spacing:-.02em}
.tool-card p{margin:0;font-size:.92rem;color:var(--muted)}
.badge{
  display:inline-flex;padding:6px 9px;margin-top:14px;border-radius:999px;
  background:var(--surface-soft);color:var(--muted-strong);font-size:.72rem;font-weight:800
}
.feature-band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.feature{padding:24px;border-radius:22px}
.feature h3{margin:10px 0 8px;letter-spacing:-.02em}
.footer{border-top:1px solid var(--border);margin-top:56px;padding:38px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.footer h4{margin:0 0 10px;letter-spacing:-.02em}
.footer a{display:block;padding:5px 0;color:var(--muted);font-size:.93rem}
.footer a:hover{color:var(--text)}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--border);margin-top:26px;padding-top:18px;color:var(--muted);font-size:.88rem}

.breadcrumbs{padding:24px 0 0;color:var(--muted);font-size:.88rem}
.breadcrumbs a:hover{color:var(--brand)}
.tool-hero{padding:34px 0 14px}
.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}
.tool-panel{padding:26px;border-radius:26px}
.drop-zone{
  border:1.5px dashed rgba(102,112,133,.45);background:var(--surface-soft);border-radius:20px;
  padding:34px 20px;text-align:center;transition:.2s ease
}
.drop-zone.drag{border-color:var(--brand);background:var(--brand-soft)}
.drop-zone strong{display:block;font-size:1.06rem;margin-bottom:5px}
.drop-zone small{color:var(--muted)}
.file-input{margin-top:14px}
.file-input::file-selector-button,.btn{
  border:0;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  font-weight:800;padding:12px 18px;border-radius:14px;cursor:pointer;transition:.22s ease;
  box-shadow:0 12px 24px rgba(15,118,110,.18)
}
.btn:hover{transform:translateY(-1px)}
.btn.secondary{background:var(--surface-soft);color:var(--text);box-shadow:none;border:1px solid var(--border)}
.btn.success{background:linear-gradient(135deg,#0b8a52,#12b76a)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:18px}
.control{display:flex;flex-direction:column;gap:7px}
.control.full{grid-column:1/-1}
.control label{font-size:.85rem;font-weight:750;color:var(--muted-strong)}
.control input,.control select,.control textarea,.editor{
  width:100%;border:1px solid var(--border);background:var(--surface-soft);color:var(--text);
  border-radius:14px;padding:11px 13px;outline:none
}
.control input:focus,.control select:focus,.control textarea:focus,.editor:focus{border-color:rgba(37,99,235,.45);box-shadow:0 0 0 4px rgba(37,99,235,.08)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.status{margin-top:16px;padding:13px 14px;border-radius:14px;background:var(--surface-soft);display:none;color:var(--muted-strong)}
.status.show{display:block}
.status.ok{background:rgba(8,116,67,.09);color:var(--success)}
.status.err{background:rgba(180,35,24,.08);color:var(--danger)}
.result-box{display:none;margin-top:18px;padding:16px;border:1px solid var(--border);border-radius:18px;background:var(--surface-soft)}
.result-box.show{display:block}
.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.metric{padding:13px;border-radius:14px}
.metric b{display:block;font-size:1.03rem}
.metric span{font-size:.78rem;color:var(--muted)}
.preview{max-height:360px;display:block;margin:14px auto 0;border-radius:14px}
.side-card{padding:20px;border-radius:22px;margin-bottom:16px}
.side-card h3{margin:0 0 9px;font-size:1rem;letter-spacing:-.02em}
.side-card ul{padding-left:18px;margin:10px 0 0}
.content-card{padding:28px;border-radius:24px;margin-top:22px}
.content-card h2{margin:0 0 8px;letter-spacing:-.03em}
.content-card h3{margin-top:24px;letter-spacing:-.02em}
.steps{counter-reset:steps;list-style:none;padding:0;margin:0}
.steps li{counter-increment:steps;position:relative;padding:0 0 16px 48px}
.steps li::before{
  content:counter(steps);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:11px;
  background:linear-gradient(135deg,rgba(15,118,110,.16),rgba(37,99,235,.16));
  color:var(--brand);display:grid;place-items:center;font-weight:800
}
.faq details{border-top:1px solid var(--border);padding:14px 0}
.faq details:last-child{border-bottom:1px solid var(--border)}
.faq summary{font-weight:750;cursor:pointer}
.editor{min-height:260px;resize:vertical}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}
.stat{padding:14px;border-radius:16px;background:var(--surface-soft)}
.stat b{display:block;font-size:1.26rem}
.stat span{display:block;font-size:.8rem;color:var(--muted)}
.legal{max-width:860px}
.legal h1{font-size:clamp(2.25rem,5vw,3.7rem)}
.notice{border:1px solid rgba(37,99,235,.2);background:rgba(37,99,235,.06);padding:15px 17px;border-radius:16px}
.category-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.category-tabs button{
  border:1px solid var(--border);background:rgba(255,255,255,.7);color:var(--muted-strong);
  padding:10px 13px;border-radius:999px;cursor:pointer;transition:.22s ease
}
.category-tabs button.active,.category-tabs button:hover{background:var(--text);color:var(--bg);border-color:var(--text)}
.noscript{margin:20px auto;background:#fff4dc;color:#8a5a00;padding:14px 16px;border-radius:14px;max-width:1000px}
.check-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}

[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s ease, transform .55s ease}
[data-reveal].is-visible{opacity:1;transform:none}

@media (max-width: 1024px){
  .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-band{grid-template-columns:1fr}
  .tool-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
}
@media (max-width: 820px){
  .menu-btn{display:grid}
  .nav-links{
    position:absolute;left:18px;right:18px;top:84px;padding:14px;flex-direction:column;align-items:stretch;gap:8px;
    border:1px solid var(--border);background:rgba(255,255,255,.94);border-radius:22px;box-shadow:var(--shadow);
    opacity:0;visibility:hidden;transform:translateY(-8px);transition:.22s ease
  }
  [data-theme="dark"] .nav-links{background:rgba(16,24,40,.96)}
  .nav-links.open{opacity:1;visibility:visible;transform:none}
  .nav-links a,.nav-links .icon-btn{width:100%}
  .nav-links .icon-btn{justify-self:flex-start}
  .hero{padding-top:68px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width: 640px){
  .container{width:min(100% - 24px,1180px)}
  .nav{height:74px}
  .hero h1{font-size:clamp(2.25rem,10vw,3.25rem)}
  .hero p{font-size:.98rem}
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start}
  .tool-grid,.result-grid,.controls,.stat-grid,.footer-grid{grid-template-columns:1fr}
  .tool-panel,.content-card,.side-card,.feature,.tool-card{padding:18px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}