:root{
  --primary:#4f46e5; --primary-dark:#4338ca; --primary-light:#eef2ff;
  --accent:#0ea5e9; --text:#0f172a; --muted:#475569; --soft:#64748b;
  --bg:#f8fafc; --card:#ffffff; --border:#e2e8f0; --success:#059669;
  --radius:16px; --shadow:0 4px 24px rgba(15,23,42,.07);
  --shadow-lg:0 12px 40px rgba(79,70,229,.14);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;
  box-shadow:0 1px 3px rgba(15,23,42,.05)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.18rem;color:var(--text)}
.logo:hover{text-decoration:none}
.logo svg{width:34px;height:34px;flex-shrink:0}
.logo span em{color:var(--primary);font-style:normal}
.main-nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.main-nav a{color:var(--muted);font-weight:600;font-size:.95rem;padding:8px 14px;border-radius:10px}
.main-nav a:hover{background:var(--primary-light);color:var(--primary);text-decoration:none}
.main-nav a.nav-cta{background:var(--primary);color:#fff}
.main-nav a.nav-cta:hover{background:var(--primary-dark);color:#fff}
.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:10px;
  padding:8px 12px;font-size:1.1rem;cursor:pointer;color:var(--text)}

/* Hero */
.hero{background:linear-gradient(135deg,#eef2ff 0%,#f0f9ff 60%,#f8fafc 100%);
  border-bottom:1px solid var(--border);padding:56px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero h1{font-size:2.35rem;line-height:1.2;letter-spacing:-.5px;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero p.lead{font-size:1.13rem;color:var(--muted);margin-bottom:22px}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.badge{background:#fff;border:1px solid var(--border);border-radius:999px;padding:6px 14px;
  font-size:.85rem;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:6px}
.badge svg{width:15px;height:15px;color:var(--success)}
.hero-img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}

/* Sections */
section{padding:52px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 36px}
.section-head h2{font-size:1.85rem;letter-spacing:-.4px;margin-bottom:10px}
.section-head p{color:var(--muted);font-size:1.05rem}
.eyebrow{display:inline-block;color:var(--primary);font-weight:700;font-size:.82rem;
  text-transform:uppercase;letter-spacing:1.5px;margin-bottom:8px}

/* Tool card grid */
.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tool-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tool-card img{width:100%;aspect-ratio:8/5;object-fit:cover}
.tool-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.tool-card h3{font-size:1.12rem;margin-bottom:8px}
.tool-card h3 a{color:var(--text)}
.tool-card p{color:var(--muted);font-size:.94rem;flex:1;margin-bottom:14px}
.card-link{font-weight:700;font-size:.93rem;color:var(--primary);display:inline-flex;align-items:center;gap:6px}

/* Tool widget */
.tool-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:28px;margin:8px 0 12px}
.tool-box h2.tool-box-title,.tool-box p.tool-box-sub{margin-bottom:6px}
.tool-box p.tool-box-sub{color:var(--muted);font-size:.95rem;margin-bottom:18px}
label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px;color:var(--text)}
textarea,input[type=text],input[type=number],input[type=date],input[type=email],select{
  width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:10px;
  font:inherit;color:var(--text);background:#fff;transition:border .15s}
textarea:focus,input:focus,select:focus{outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(79,70,229,.12)}
textarea{min-height:170px;resize:vertical}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--primary);
  color:#fff;font-weight:700;font-size:1rem;border:none;border-radius:10px;padding:13px 26px;
  cursor:pointer;transition:background .15s}
.btn:hover{background:var(--primary-dark)}
.btn.btn-ghost{background:var(--primary-light);color:var(--primary)}
.btn.btn-ghost:hover{background:#e0e7ff}
.btn.btn-sm{padding:9px 16px;font-size:.9rem}
.field-row{display:grid;gap:16px;margin-bottom:16px}
.row-2{grid-template-columns:1fr 1fr}.row-3{grid-template-columns:1fr 1fr 1fr}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.stat{background:var(--primary-light);border-radius:12px;padding:14px 10px;text-align:center}
.stat b{display:block;font-size:1.5rem;color:var(--primary-dark);line-height:1.2}
.stat span{font-size:.82rem;color:var(--muted);font-weight:600}
.result-box{background:#f0fdf4;border:1.5px solid #bbf7d0;border-radius:12px;padding:16px 18px;
  margin-top:16px;font-size:1.02rem;display:none}
.result-box.show{display:block}
.result-box b{color:var(--success);font-size:1.25rem}
.checks{display:flex;gap:18px;flex-wrap:wrap;margin:12px 0 16px}
.checks label{display:flex;align-items:center;gap:8px;font-weight:600;cursor:pointer;margin:0}
input[type=checkbox]{width:18px;height:18px;accent-color:var(--primary)}
input[type=range]{width:100%;accent-color:var(--primary)}
.pw-out-row{display:flex;gap:10px;margin-top:16px}
.pw-out-row input{font-family:ui-monospace,Consolas,monospace;font-size:1.05rem;font-weight:700}
.meter{height:8px;border-radius:99px;background:var(--border);margin-top:12px;overflow:hidden}
.meter i{display:block;height:100%;width:0;border-radius:99px;transition:all .25s}
.hint{font-size:.85rem;color:var(--soft);margin-top:10px}
.copy-ok{color:var(--success);font-weight:700;font-size:.88rem;margin-left:8px;display:none}
.notice{background:#fffbeb;border:1.5px solid #fde68a;border-radius:12px;padding:14px 18px;
  font-size:.9rem;color:#78350f;margin-top:18px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.tabs button{border:1.5px solid var(--border);background:#fff;border-radius:999px;padding:8px 16px;
  font:inherit;font-weight:600;font-size:.9rem;cursor:pointer;color:var(--muted)}
.tabs button.active{background:var(--primary);border-color:var(--primary);color:#fff}
.tab-pane{display:none}.tab-pane.active{display:block}
.btn-row{display:flex;gap:10px;flex-wrap:wrap}

/* Article / content */
.page-head{background:linear-gradient(135deg,#eef2ff,#f0f9ff);border-bottom:1px solid var(--border);
  padding:34px 0 30px}
.breadcrumb{font-size:.86rem;color:var(--soft);margin-bottom:12px}
.breadcrumb a{color:var(--soft)}
.page-head h1{font-size:2rem;letter-spacing:-.4px;margin-bottom:10px}
.page-head p.lead{color:var(--muted);font-size:1.08rem;max-width:820px}
.content{max-width:860px;margin:0 auto}
.content article h2{font-size:1.45rem;margin:34px 0 12px;letter-spacing:-.3px}
.content article h3{font-size:1.15rem;margin:22px 0 8px}
.content article p{margin-bottom:14px;color:#1e293b}
.content article ul,.content article ol{margin:0 0 16px 22px}
.content article li{margin-bottom:8px;color:#1e293b}
.content article .tool-illustration{border-radius:var(--radius);box-shadow:var(--shadow);margin:22px 0}
details{background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:16px 20px;margin-bottom:12px}
details summary{font-weight:700;cursor:pointer;color:var(--text)}
details p{margin-top:10px;color:var(--muted)}
.updated{font-size:.85rem;color:var(--soft);margin-bottom:18px}

/* Feature list */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow)}
.feature .f-icon{width:46px;height:46px;border-radius:12px;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.feature .f-icon svg{width:24px;height:24px;color:var(--primary)}
.feature h3{font-size:1.05rem;margin-bottom:6px}
.feature p{color:var(--muted);font-size:.93rem}

/* Related */
.related{background:var(--primary-light);border-radius:var(--radius);padding:26px;margin-top:40px}
.related h2{font-size:1.2rem;margin-bottom:14px}
.related ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 24px;margin:0}
.related a{font-weight:600}

/* Footer */
.site-footer{background:#0f172a;color:#cbd5e1;margin-top:60px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.1fr;gap:36px;padding:48px 0 36px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:9px}
.site-footer a{color:#cbd5e1}
.site-footer a:hover{color:#fff}
.footer-about p{color:#94a3b8;margin-top:10px}
.footer-logo{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:1.1rem}
.footer-logo svg{width:30px;height:30px}
.company-data li{display:flex;gap:8px;color:#94a3b8}
.company-data b{color:#e2e8f0;font-weight:600}
.footer-bottom{border-top:1px solid #1e293b;padding:20px 0;text-align:center;color:#94a3b8;font-size:.85rem}
.footer-bottom p{margin-bottom:4px}

/* Cookie banner */
.cookie-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:100;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);
  padding:20px 24px;display:none;gap:18px;align-items:center;max-width:1100px;margin:0 auto}
.cookie-banner.show{display:flex}
.cookie-banner p{font-size:.9rem;color:var(--muted);flex:1;margin:0}
.cookie-actions{display:flex;gap:10px;flex-shrink:0}

@media(max-width:920px){
  .hero-grid{grid-template-columns:1fr}
  .tools-grid,.features{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .menu-toggle{display:block}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:12px 20px;border-bottom:1px solid var(--border);
    box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .hero h1{font-size:1.75rem}
  .tools-grid,.features,.row-2,.row-3,.stats-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .related ul{grid-template-columns:1fr}
  .cookie-banner{flex-direction:column;align-items:stretch;text-align:center}
  .page-head h1{font-size:1.5rem}
}