:root{
  --bg:#f5f8fc;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --text:#0f172a;
  --muted:#64748b;
  --line:#dbe4ef;
  --primary:#1d4ed8;
  --primary-2:#2563eb;
  --primary-3:#60a5fa;
  --soft:#eaf2ff;
  --dark:#0b1220;
  --success:#087f5b;
  --warning:#8a5a00;
  --danger:#b42318;
  --gold:#c5a45d;
  --shadow:0 20px 60px rgba(15,23,42,.10);
  --shadow-sm:0 8px 26px rgba(15,23,42,.06);
  --radius:24px;
  --radius-sm:16px;
  --container:min(1180px, calc(100% - 32px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(circle at 90% 0%,rgba(37,99,235,.10),transparent 26%),
    linear-gradient(180deg,#fbfdff 0%,var(--bg) 42%,#f7f9fc 100%);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.container{width:var(--container);margin:0 auto}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:12px;top:12px;z-index:999;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}

/* Header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(248,251,255,.90);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,228,239,.86)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.03em;font-size:20px;white-space:nowrap}
.brand-mark{width:40px;height:40px;border-radius:14px;background:linear-gradient(135deg,var(--primary-2),#5aa6ff);color:#fff;display:grid;place-items:center;box-shadow:0 10px 24px rgba(37,99,235,.28);font-weight:900}
.main-nav{display:flex;align-items:center;gap:22px;font-size:14px;color:#334155}
.main-nav a{padding:8px 0;position:relative}
.main-nav a:hover{color:var(--primary)}
.main-nav a[aria-current="page"]{color:var(--primary);font-weight:800}
.header-actions{display:flex;gap:10px;align-items:center}
.menu-btn{display:none;border:1px solid var(--line);background:#fff;width:44px;height:44px;border-radius:13px;align-items:center;justify-content:center;cursor:pointer;font-size:21px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:14px 20px;font-weight:800;border:1px solid transparent;cursor:pointer;transition:.2s ease;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 14px 32px rgba(37,99,235,.24)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 17px 36px rgba(37,99,235,.29)}
.btn-secondary{background:#fff;border-color:var(--line);color:#0f172a}
.btn-secondary:hover{border-color:#b8c6da;background:#fbfdff}
.btn-link{padding:0;color:var(--primary);font-weight:800}

/* Hero */
.hero{padding:66px 0 42px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;background:var(--soft);color:var(--primary);font-size:13px;font-weight:800;border:1px solid #d9e7ff}
.hero h1{font-size:clamp(42px,6vw,72px);line-height:.98;letter-spacing:-.055em;margin:18px 0 20px;max-width:780px}
.lead{font-size:20px;color:#475569;max-width:690px;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px}
.mini-points{display:flex;flex-wrap:wrap;gap:8px 18px;color:#334155;font-size:14px}
.mini-points span{display:inline-flex;align-items:center;gap:8px;padding:6px 0}
.mini-points span::before{content:"✓";color:var(--success);font-weight:900}

/* Calculator */
.calc-card,.form-card,.surface-card{background:var(--surface);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:28px}
.calc-top{display:flex;justify-content:space-between;gap:12px;align-items:start;margin-bottom:12px}
.calc-title{font-size:26px;font-weight:900;letter-spacing:-.03em}
.pill{display:inline-flex;align-items:center;padding:7px 10px;border-radius:999px;background:#f8fafc;border:1px solid var(--line);font-size:12px;color:#475569;font-weight:750}
.field{margin-top:18px}
.field label{display:flex;justify-content:space-between;gap:12px;font-size:14px;font-weight:800;margin-bottom:8px}
input[type=range]{width:100%;accent-color:var(--primary)}
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.quick-box{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:14px}
.quick-box .small{font-size:12px;color:#64748b;margin-bottom:5px}
.quick-box .big{font-weight:900;font-size:20px;letter-spacing:-.03em}
.result{margin-top:18px;padding:18px;border-radius:18px;background:linear-gradient(180deg,#f8fbff 0%,#eef5ff 100%);border:1px solid #d9e7ff}
.result .hint{font-size:12px;color:#64748b}
.result .value{font-size:26px;font-weight:900;letter-spacing:-.04em;margin:4px 0 6px}
.fine{font-size:12px;color:#64748b}

/* General sections */
section.section{padding:60px 0}
.section-head{max-width:760px;margin-bottom:28px}
.section-head h2{margin:0 0 10px;font-size:38px;letter-spacing:-.04em;line-height:1.1}
.section-head p{margin:0;color:var(--muted)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow-sm)}
.card-icon{width:46px;height:46px;border-radius:14px;background:var(--soft);display:grid;place-items:center;font-size:21px;margin-bottom:16px;color:var(--primary);font-weight:900}
.card h3{margin:0 0 8px;font-size:20px;letter-spacing:-.02em}
.card p{margin:0;color:var(--muted);font-size:14px}
.card .meta{font-size:12px;color:#718096;margin-top:12px}
.steps .num{width:40px;height:40px;border-radius:12px;background:#0f172a;color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:16px}
.band{background:linear-gradient(135deg,#0b1220 0%,#111d34 70%,#153573 100%);color:#fff;border-radius:30px;padding:34px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;box-shadow:0 24px 60px rgba(11,18,32,.18)}
.band h2{margin:0 0 8px;font-size:34px;letter-spacing:-.04em}.band p{margin:0;color:#d8e4ff;max-width:720px}

/* Product metrics */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.metric{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow-sm)}
.metric-label{font-size:12px;color:#64748b;margin-bottom:7px}
.metric-value{font-size:23px;font-weight:900;letter-spacing:-.035em;line-height:1.15}
.metric-note{font-size:12px;color:#64748b;margin-top:8px}
.equal-rate .metric-value{font-size:23px}

/* Conditions */
.two-col{display:grid;grid-template-columns:1.04fr .96fr;gap:22px;align-items:start}
.clean-list{margin:0;padding:0;list-style:none;display:grid;gap:12px}
.clean-list li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 16px;color:#334155;box-shadow:0 4px 16px rgba(15,23,42,.03)}
.clean-list li strong{color:#0f172a}

/* Alerts */
.alert{border-radius:18px;padding:16px 18px;font-size:13px;border:1px solid;margin-top:16px}
.alert strong{color:inherit}
.alert-warning{background:#fff8e6;border-color:#f6d98a;color:#7c5200}
.alert-danger{background:#fff5f4;border-color:#fecdca;color:#912018}
.alert-info{background:#eef6ff;border-color:#cfe2ff;color:#1849a9}
.alert-success{background:#ecfdf3;border-color:#abefc6;color:#067647}
.ad-warning{margin:22px 0 0;padding:20px 22px;border-radius:20px;background:#fff8e6;border:2px solid #f2d27a;color:#684b00;font-size:14px;min-height:110px;display:flex;flex-direction:column;justify-content:center}
.ad-warning strong{font-size:16px;margin-bottom:3px}

/* FAQ */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:16px}
details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 20px;box-shadow:0 4px 18px rgba(15,23,42,.03)}
summary{cursor:pointer;font-weight:800;list-style:none;padding-right:24px;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:-2px;color:var(--primary);font-size:22px}
details[open] summary::after{content:"−"}
details p{color:var(--muted);font-size:14px;margin:12px 0 0}

/* Form */
.apply-wrap{display:grid;grid-template-columns:.86fr 1.14fr;gap:24px;align-items:start}
.apply-side{background:linear-gradient(180deg,#eef5ff 0%,#f9fbff 100%);border:1px solid #d9e7ff;border-radius:24px;padding:26px;position:sticky;top:96px}
.apply-side h3{margin:0 0 10px;font-size:26px;letter-spacing:-.03em}.apply-side p{margin:0;color:#526175}
.badge-list{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.badge-list li{background:#fff;border:1px solid #d9e7ff;border-radius:14px;padding:12px 14px;font-size:14px;color:#334155}
.form-card{padding:26px}
.form-title{font-size:28px;margin:0 0 6px;letter-spacing:-.03em}.form-subtitle{margin:0 0 20px;color:#64748b;font-size:14px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.full{grid-column:1/-1}
.input-group label{display:block;font-size:13px;font-weight:800;margin-bottom:7px;color:#334155}
.required{color:#b42318}
.input-group input,.input-group select,.input-group textarea{width:100%;padding:13px 14px;border:1px solid #cfd9e7;border-radius:13px;background:#fff;color:#0f172a;outline:none;transition:.15s}
.input-group input:focus,.input-group select:focus,.input-group textarea:focus{border-color:#93c5fd;box-shadow:0 0 0 4px #eaf2ff}
.input-group textarea{resize:vertical;min-height:96px}

.privacy-before-consent{margin:16px 0 0;padding:12px 14px;border:1px solid #cfe0ff;background:#f4f8ff;border-radius:14px;color:#53657f;font-size:12.5px;line-height:1.55}
.privacy-before-consent a{color:#175cd3;text-decoration:underline;font-weight:800}
.consent{display:flex;gap:10px;align-items:flex-start;margin:15px 0 18px;color:#64748b;font-size:12.5px}
.consent input{width:18px;height:18px;flex:0 0 auto;margin-top:1px}.consent a{color:#175cd3;text-decoration:underline;font-weight:750}
.form-status{display:none;margin-top:14px;padding:13px 14px;border-radius:13px;font-size:13px;font-weight:700}.form-status.show{display:block}
.form-status.error{background:#fff5f4;border:1px solid #fecdca;color:#912018}.form-status.ok{background:#ecfdf3;border:1px solid #abefc6;color:#067647}
.hp{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;overflow:hidden!important}

/* Page hero */
.page-hero{padding:50px 0 28px}
.page-hero-inner{background:linear-gradient(135deg,#0b1220,#153573);border-radius:30px;padding:38px;color:#fff;box-shadow:0 22px 55px rgba(11,18,32,.16)}
.page-hero .eyebrow{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.16);color:#dbeafe}
.page-hero h1{font-size:clamp(34px,4.6vw,54px);line-height:1.02;letter-spacing:-.045em;margin:16px 0 12px;max-width:900px}
.page-hero p{margin:0;color:#d7e3f7;max-width:820px;font-size:17px}
.breadcrumbs{display:flex;gap:7px;flex-wrap:wrap;color:#64748b;font-size:13px;padding-top:22px}.breadcrumbs a{color:#475569}.breadcrumbs span{color:#94a3b8}

/* Docs / long-form */
.doc-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:24px;align-items:start;padding:24px 0 64px}
.doc-toc{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow-sm);max-height:calc(100vh - 120px);overflow:auto}
.doc-toc .toc-title{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#64748b;font-weight:900;margin-bottom:10px}
.doc-toc a{display:block;padding:8px 10px;border-radius:10px;color:#475569;font-size:13px;line-height:1.35}.doc-toc a:hover{background:#f3f7fd;color:var(--primary)}
.document{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-sm);padding:34px;min-width:0}
.document .doc-lead{background:#f8fbff;border:1px solid #dce9fb;border-radius:18px;padding:18px 20px;color:#475569;margin-bottom:26px}
.doc-section{padding:4px 0 24px;border-bottom:1px solid #edf1f6;margin-bottom:24px;scroll-margin-top:105px}.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.doc-section h2{font-size:25px;letter-spacing:-.025em;margin:0 0 14px;line-height:1.2}.doc-section h3{font-size:18px;margin:20px 0 8px}.doc-section p{color:#334155;margin:0 0 12px}.doc-section ul,.doc-section ol{color:#334155;padding-left:22px;margin:10px 0 14px}.doc-section li{margin:7px 0}
.data-table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:14px 0 6px}.data-table th,.data-table td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}.data-table tr:last-child td,.data-table tr:last-child th{border-bottom:0}.data-table th{width:34%;background:#f8fafc;color:#334155;font-size:13px}.data-table td{color:#0f172a;font-size:14px}
.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.info-item{border:1px solid var(--line);background:#fbfdff;border-radius:16px;padding:16px}.info-item .k{font-size:12px;color:#64748b;margin-bottom:5px}.info-item .v{font-weight:850;color:#0f172a}
.doc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}

/* Document hub */
.doc-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding-bottom:60px}.doc-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;min-height:220px}.doc-card .doc-icon{width:44px;height:44px;border-radius:13px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:900;margin-bottom:16px}.doc-card h2{font-size:19px;margin:0 0 8px;line-height:1.25}.doc-card p{color:#64748b;font-size:14px;margin:0 0 18px;flex:1}.doc-card a{color:var(--primary);font-weight:850}

/* Contacts */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.contact-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow-sm)}.contact-card h2{font-size:21px;margin:0 0 15px}.contact-line{padding:11px 0;border-bottom:1px solid #edf1f6}.contact-line:last-child{border-bottom:0}.contact-line .k{font-size:12px;color:#64748b;margin-bottom:3px}.contact-line .v{font-weight:750;color:#0f172a}.contact-line a{color:var(--primary)}

/* Footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:42px 0 54px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}.footer-box{border:1px solid var(--line);border-radius:22px;padding:22px;background:#fcfdff}.footer-box h3{margin:0 0 14px;font-size:18px}.footer-box p,.footer-box li{color:#526175;font-size:14px}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:9px}.footer-links a{padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:13px;font-weight:750;color:#334155}.footer-links a:hover{color:var(--primary);border-color:#bed2ef}.footer-note{margin-top:18px;padding:16px;border:1px solid #f6d98a;border-radius:16px;background:#fff8e6;color:#7c5200;font-size:12.5px}.copy{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:#64748b;font-size:13px}
.mobile-cta{display:none}

/* Structure */
.structure-tree{display:grid;gap:12px}.structure-node{border:1px solid var(--line);border-radius:16px;background:#fff;padding:15px 17px}.structure-node strong{display:block;margin-bottom:4px}.structure-node span{color:#64748b;font-size:13px}

/* Print */
@media print{
  .site-header,.site-footer,.doc-toc,.mobile-cta,.breadcrumbs,.doc-actions{display:none!important}
  body{background:#fff;color:#000}.container{width:100%;max-width:none}.doc-layout{display:block;padding:0}.document{box-shadow:none;border:0;border-radius:0;padding:0}.doc-section{break-inside:avoid}.page-hero{display:none}.data-table{break-inside:avoid}
}

@media(max-width:1020px){
  .main-nav{display:none;position:absolute;top:76px;left:16px;right:16px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:14px;flex-direction:column;align-items:stretch;gap:2px}.main-nav.open{display:flex}.main-nav a{padding:11px 12px;border-radius:10px}.menu-btn{display:flex}.header-actions .btn-secondary{display:none}
  .hero-grid,.two-col,.apply-wrap,.footer-grid,.contact-grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.grid-3,.doc-cards{grid-template-columns:1fr 1fr}.doc-layout{grid-template-columns:1fr}.doc-toc{position:static;max-height:none}.apply-side{position:static}
}
@media(max-width:680px){
  :root{--container:min(100% - 24px, 1180px)}
  .header-inner{height:68px}.brand{font-size:18px}.brand-mark{width:36px;height:36px;border-radius:12px}.main-nav{top:68px}.header-actions .btn-primary{display:none}
  .hero{padding:38px 0 28px}.hero h1{font-size:39px}.lead{font-size:17px}.calc-card,.form-card,.surface-card{padding:20px;border-radius:22px}.calc-top{display:block}.pill{margin-top:10px}.quick-grid,.form-grid,.info-grid,.grid-2,.grid-3,.doc-cards,.faq,.metrics,.footer-links{grid-template-columns:1fr}.full{grid-column:auto}.section-head h2{font-size:31px}section.section{padding:46px 0}.band{padding:26px;grid-template-columns:1fr}.band h2{font-size:29px}.page-hero{padding-top:28px}.page-hero-inner{padding:28px 22px;border-radius:24px}.document{padding:22px 18px;border-radius:20px}.doc-section h2{font-size:22px}.data-table th,.data-table td{display:block;width:100%;border-bottom:0}.data-table th{padding-bottom:5px}.data-table td{padding-top:5px;border-bottom:1px solid var(--line)}.data-table tr:last-child td{border-bottom:0}
  .mobile-cta{display:flex;position:fixed;left:12px;right:12px;bottom:12px;z-index:55}.site-footer{padding-bottom:92px}
}