:root{--bg:#f6f9ff;--surface:#fff;--text:#071b49;--muted:#61708f;--line:#dce7f6;--blue:#0b6ff0;--blue-dark:#0756c7;--teal:#10aeb5;--green:#2fbf71;--orange:#f47b20;--purple:#7657e6;--shadow:0 18px 45px rgba(7,27,73,.09);--soft:0 10px 25px rgba(7,27,73,.07);--radius:22px}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.6}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:850;font-size:22px;letter-spacing:-.03em}.main-nav{display:flex;align-items:center;gap:28px;font-weight:650;color:#23365f}.main-nav a.active{color:var(--blue)}.nav-button{color:#fff!important;background:var(--blue);padding:12px 18px;border-radius:12px;box-shadow:0 12px 22px rgba(11,111,240,.22)}.mobile-menu-button{display:none;border:0;background:var(--blue);color:#fff;border-radius:12px;padding:10px 13px;font-size:20px}.hero{background:radial-gradient(circle at 80% 15%,#dcecff 0,transparent 35%),linear-gradient(180deg,#fff 0%,#f3f8ff 100%);border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:50px;align-items:center;min-height:520px;padding:56px 0}.eyebrow{color:var(--blue);font-weight:850;text-transform:uppercase;letter-spacing:.12em;font-size:12px;margin:0 0 12px}h1,h2,h3{letter-spacing:-.045em;line-height:1.08;margin:0}h1{font-size:clamp(42px,6vw,64px);max-width:720px}h2{font-size:clamp(28px,3.5vw,38px)}h3{font-size:20px}.hero-text,.page-hero p,.calculator-hero p{color:var(--muted);font-size:19px;max-width:660px;margin:24px 0}.search-box{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--soft);border-radius:16px;padding:8px 8px 8px 18px;max-width:520px}.search-box img{width:21px;opacity:.7}.search-box input{flex:1;border:0;outline:0;min-height:44px;font-size:16px;color:var(--text)}.search-box button{border:0;background:var(--blue);color:#fff;border-radius:12px;padding:12px 16px;font-weight:800;cursor:pointer}.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:14px;padding:14px 22px;font-weight:850;cursor:pointer;font-size:16px}.button.primary{color:#fff;background:var(--blue);box-shadow:0 16px 28px rgba(11,111,240,.2)}.button.primary:hover,.nav-button:hover{background:var(--blue-dark)}.button.secondary{color:var(--teal);background:#fff;border-color:rgba(16,174,181,.45)}.button.ghost{color:var(--text);background:#fff;border-color:var(--line)}.hero-art{filter:drop-shadow(0 18px 34px rgba(7,27,73,.10))}.section{padding:48px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-head a{color:var(--blue);font-weight:800}.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}.category-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;min-height:170px;text-align:center;box-shadow:var(--soft);transition:.2s}.category-card:hover,.tool-card:hover,.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.icon-circle{width:68px;height:68px;margin:0 auto 14px;display:grid;place-items:center;border-radius:50%;background:#e9f3ff}.icon-circle img{width:34px;height:34px}.icon-circle.green{background:#dff7e8}.icon-circle.blue{background:#e5f0ff}.icon-circle.orange{background:#fff0e5}.icon-circle.purple{background:#eee9ff}.icon-circle.teal{background:#ddf7f8}.category-card strong{display:block;margin-bottom:8px}.category-card small{display:block;color:var(--muted);line-height:1.45}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.tool-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;display:grid;grid-template-columns:60px 1fr 18px;gap:16px;align-items:center;min-height:132px;box-shadow:var(--soft);transition:.2s}.tool-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:16px;background:#eef6ff}.tool-icon img{width:34px;height:34px}.tool-card strong{display:block;margin-bottom:5px;line-height:1.25}.tool-card small{color:var(--muted);display:block;line-height:1.4}.tool-card em{font-style:normal;font-size:30px;color:#7890b7}.split-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.panel,.side-card,.calculator-panel,.article-card,.contact-form,.empty-state{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft);padding:28px}.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}.benefit{text-align:center;border:1px solid var(--line);border-radius:18px;padding:22px 16px}.benefit img{width:52px;height:52px;margin:0 auto 12px}.benefit p{color:var(--muted);margin-bottom:0;font-size:14px}details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-top:12px}summary{cursor:pointer;font-weight:800}details p{color:var(--muted);margin-bottom:0}.soft-section{background:linear-gradient(180deg,transparent 0,#eef6ff 100%)}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-card{min-height:190px;transition:.2s}.article-card small{color:var(--blue);font-weight:850;text-transform:uppercase;letter-spacing:.08em}.article-card strong{display:block;font-size:22px;line-height:1.15;margin:10px 0}.article-card p{color:var(--muted);margin:0}.page-hero,.calculator-hero{background:linear-gradient(180deg,#fff,#f2f7ff);border-bottom:1px solid var(--line)}.page-hero.compact{padding:64px 0 48px}.page-search{margin-top:28px}.count-pill{background:#e9f3ff;color:var(--blue);font-weight:850;border-radius:999px;padding:8px 14px}.calculator-layout{display:grid;grid-template-columns:1fr 120px;gap:30px;align-items:center;padding:54px 0}.breadcrumb{color:var(--muted);font-size:14px;margin:0 0 12px}.breadcrumb a{color:var(--blue);font-weight:750}.calculator-hero-icon{width:110px;height:110px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--soft)}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}.calculator-form{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.calculator-form label,.contact-form label{display:grid;gap:8px;font-weight:750}.calculator-form input,.calculator-form select,.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font-size:16px;outline:none;background:#fbfdff;color:var(--text)}.calculator-form input:focus,.calculator-form select:focus,.contact-form input:focus,.contact-form textarea:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(11,111,240,.11)}.form-actions{grid-column:1/-1;display:flex;gap:12px;flex-wrap:wrap}.result-box{margin-top:22px;background:linear-gradient(135deg,#071b49,#0b6ff0);color:#fff;border-radius:var(--radius);padding:24px;min-height:130px}.result-box p{color:rgba(255,255,255,.78);margin-bottom:0}.result-box strong{font-size:22px}.result-lines{margin-top:16px;display:grid;gap:10px}.result-lines p{display:flex;justify-content:space-between;gap:14px;margin:0;background:rgba(255,255,255,.12);padding:10px 12px;border-radius:12px}.sidebar{display:grid;gap:18px}.side-card h3,.side-card h2{margin-bottom:12px}.side-card p{color:var(--muted)}.side-link{display:block;padding:10px 0;border-top:1px solid var(--line);color:var(--blue);font-weight:750}.ad-placeholder{min-height:250px;border:1px dashed #b8c9e4;border-radius:var(--radius);background:repeating-linear-gradient(45deg,#f7fbff,#f7fbff 10px,#eef6ff 10px,#eef6ff 20px);color:#7890b7;display:grid;place-items:center;text-align:center;padding:20px}.ad-placeholder span{display:block;font-weight:850;color:#58709a}.content-narrow{max-width:840px}.check-list{padding-left:0;list-style:none}.check-list li{margin:10px 0;padding-left:32px;position:relative}.check-list li:before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:900}.article-body{font-size:18px}.article-body p{color:#394867}.notice{padding:14px 18px;border-radius:14px;margin-bottom:18px;font-weight:750}.notice.success{background:#dcf7e7;color:#17633d}.notice.error{background:#ffe7e7;color:#8d1f1f}.sitemap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.site-footer{background:#fff;border-top:1px solid var(--line);padding:44px 0 20px}.footer-grid{display:grid;grid-template-columns:1.6fr .8fr .8fr .8fr 1.3fr;gap:34px}.footer-brand{font-size:18px}.site-footer p{color:var(--muted)}.site-footer h3{font-size:16px;margin-bottom:12px}.site-footer a:not(.brand){display:block;color:#405173;margin:8px 0}.socials{display:flex;gap:10px}.socials span{width:34px;height:34px;border-radius:50%;background:#eef6ff;display:grid;place-items:center;font-weight:850;color:var(--blue)}.newsletter-form{display:flex;gap:8px}.newsletter-form input{min-width:0;flex:1;border:1px solid var(--line);border-radius:12px;padding:12px}.newsletter-form button{border:0;background:var(--blue);color:#fff;border-radius:12px;padding:12px 14px;font-weight:850}.footer-bottom{text-align:center;color:var(--muted);border-top:1px solid var(--line);margin-top:28px;padding-top:18px}@media(max-width:980px){.hero-grid,.split-grid,.content-grid,.calculator-layout{grid-template-columns:1fr}.category-grid{grid-template-columns:repeat(3,1fr)}.tool-grid,.sitemap-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}.calculator-hero-icon{display:none}}@media(max-width:720px){.container{width:min(100% - 28px,1180px)}.mobile-menu-button{display:block}.main-nav{position:absolute;left:14px;right:14px;top:74px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:18px;flex-direction:column;align-items:stretch;gap:14px;display:none}.main-nav.open{display:flex}h1{font-size:40px}.hero-grid{min-height:auto;padding:40px 0}.hero-art{display:none}.category-grid,.tool-grid,.benefit-grid,.footer-grid,.sitemap-grid{grid-template-columns:1fr}.calculator-form{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.search-box{max-width:none}}
.ad-slot-top,.ad-slot-bottom{width:min(1180px,calc(100% - 40px));margin:12px auto;min-height:96px}.calculator-panel .ad-placeholder,.article-body .ad-placeholder{margin-top:24px;min-height:120px}.sidebar .ad-placeholder{width:100%;margin:0;min-height:260px}.ad-placeholder small{display:block;margin-top:6px;color:#7890b7}.ad-placeholder[data-ad-location="top"],.ad-placeholder[data-ad-location="bottom"]{background:linear-gradient(135deg,#f8fbff,#eef6ff);}

.cookie-banner{position:fixed;left:20px;right:20px;bottom:20px;z-index:60;width:min(980px,calc(100% - 40px));margin:0 auto;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:18px;display:flex;align-items:center;justify-content:space-between;gap:18px}.cookie-banner[hidden]{display:none}.cookie-banner p{margin:4px 0 0;color:var(--muted);font-size:14px}.cookie-actions{display:flex;gap:10px;align-items:center;flex-shrink:0}.article-body h2{font-size:28px;margin:32px 0 12px}.article-body h2:first-child{margin-top:0}.article-body .ad-placeholder{margin:32px 0}.legal-list{padding-left:22px}.legal-list li{margin:8px 0;color:#394867}@media(max-width:720px){.cookie-banner{flex-direction:column;align-items:stretch}.cookie-actions{justify-content:flex-start;flex-wrap:wrap}}


/* v6 trust, SEO, and navigation improvements */
.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:16px}.breadcrumbs a{color:var(--blue);font-weight:800}.breadcrumbs strong{color:#405173}.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px;max-width:560px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--soft)}.stat-card strong{display:block;font-size:28px;line-height:1;color:var(--blue);letter-spacing:-.04em}.stat-card span{display:block;margin-top:6px;color:var(--muted);font-weight:750;font-size:13px}.muted-large{color:var(--muted);font-size:18px}.step-list{display:grid;gap:12px;margin-top:22px}.step-list div{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:center;background:#f7fbff;border:1px solid var(--line);border-radius:16px;padding:14px}.step-list strong{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--blue);color:#fff}.step-list span{font-weight:750;color:#405173}.compact-benefits{grid-template-columns:1fr}.category-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.category-feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--soft);transition:.2s;min-height:245px;display:flex;flex-direction:column}.category-feature-card:hover,.featured-article:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.category-feature-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.category-feature-card .icon-circle{margin:0}.category-feature-card strong{font-size:24px;letter-spacing:-.04em}.category-feature-card p{color:var(--muted);margin:10px 0 18px}.category-feature-card em{font-style:normal;color:var(--blue);font-weight:850;margin-top:auto}.numbered-list{counter-reset:item;list-style:none;padding:0}.numbered-list li{counter-increment:item;position:relative;padding-left:46px;margin:12px 0;color:#394867}.numbered-list li:before{content:counter(item);position:absolute;left:0;top:-2px;width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}.featured-articles{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px}.featured-article{background:linear-gradient(135deg,#fff,#f2f7ff);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--soft);transition:.2s;min-height:220px}.featured-article:first-child{background:linear-gradient(135deg,#071b49,#0b6ff0);color:#fff}.featured-article small{color:var(--blue);font-weight:850;text-transform:uppercase;letter-spacing:.08em}.featured-article:first-child small,.featured-article:first-child p{color:rgba(255,255,255,.78)}.featured-article strong{display:block;font-size:26px;line-height:1.1;margin:12px 0}.featured-article p{color:var(--muted);margin:0}.main-nav a{white-space:nowrap}@media(max-width:980px){.category-feature-grid,.featured-articles{grid-template-columns:1fr}.hero-stats{grid-template-columns:1fr 1fr 1fr}}@media(max-width:720px){.hero-stats{grid-template-columns:1fr}.stat-card strong{font-size:24px}.breadcrumbs{font-size:13px}.featured-article strong{font-size:22px}}