:root{--ink: #0f172a;--muted: #5b6473;--line: #e5e9f0;--bg: #ffffff;--soft: #f5f8fc;--brand: #2563eb;--brand-d: #1d4ed8;--teal: #0ea5a4;--navy: #0f172a;--radius: 14px;--shadow: 0 10px 30px rgba(15,23,42,.08);--shadow-sm: 0 2px 8px rgba(15,23,42,.06);--maxw: 1080px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:var(--brand)}h1,h2,h3,h4{letter-spacing:-.02em}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-weight:650;cursor:pointer;text-decoration:none;padding:11px 20px;border-radius:999px;border:1px solid var(--brand);background:var(--brand);color:#fff;transition:background .15s,transform 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nav a{color:var(--muted);text-decoration:none;font-size:.94rem;font-weight:550}.nav nav a:hover{color:var(--brand)}.nav-cta{flex:none}@media(max-width:720px){.nav nav{display:none}.nav-inner{gap:10px;padding-left:14px;padding-right:14px}.brand{font-size:clamp(.82rem,4vw,1.45rem);min-width:0}.brand-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.brand-mark{flex:none}.nav-actions{flex:none;gap:8px}.nav-cta,.lang-code{display:none}.lang>summary{padding:6px 10px;gap:6px}}.hero{background:radial-gradient(1000px 460px at 50% -120px,#e8f0ff,#e8f0ff00 70%),linear-gradient(#fbfdff,#fff);padding:54px 0 40px;text-align:center}.hero-inner{max-width:760px}.eyebrow{display:inline-block;background:#eaf1ff;color:var(--brand-d);font-weight:650;font-size:.82rem;padding:6px 14px;border-radius:999px;margin-bottom:18px}.hero h1{font-size:clamp(2rem,4.6vw,3rem);margin:0 0 14px;line-height:1.08}.hero-sub{font-size:1.12rem;color:var(--muted);margin:0 auto 26px;max-width:640px}.hero-sub strong{color:var(--ink)}.tool-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:26px;text-align:left;margin:0 auto;max-width:720px}.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px 18px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:.8rem;font-weight:650;color:var(--muted)}.combo{display:flex;gap:8px}.combo input{flex:1 1 auto;min-width:0}select,input{font:inherit;padding:11px 13px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);width:100%}select:focus,input:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}select:disabled{background:#eef2f8;color:var(--muted)}.calc-grid .span2{grid-column:1 / -1}.parents{margin-top:2px;border:1px dashed var(--line);border-radius:11px;padding:12px 14px;background:#fbfdff}.parents summary{font-size:.88rem;font-weight:650;color:var(--brand);cursor:pointer}.parents-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px 18px;margin-top:12px}.hint{font-size:.78rem;color:var(--muted);margin:10px 0 0}@media(max-width:560px){.parents-grid{grid-template-columns:1fr}}.result{margin-top:22px;border-top:1px dashed var(--line);padding-top:20px}.result-headline{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px}.result-label{color:var(--muted);font-size:.9rem;font-weight:600}.result-value{font-size:2.1rem;color:var(--brand)}.result-facts{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:4px;color:var(--muted);font-size:.93rem}.result-facts span{color:var(--ink);font-weight:650}.empty-state{color:var(--muted);font-size:.96rem;margin:18px 0 2px;text-align:center}.chart-wrap{margin:18px 0 6px}.chart-wrap figcaption{font-size:.82rem;font-weight:650;color:var(--muted);margin-bottom:6px}#chart svg{display:block;background:#fff;border:1px solid var(--line);border-radius:12px}#chart .grid{stroke:#eef2f8;stroke-width:1}#chart .axl{fill:#9aa4b4;font-size:11px;font-family:inherit}#chart .area{fill:#2563eb1a}#chart .line{fill:none;stroke:var(--brand);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}#chart .now{stroke:var(--teal);stroke-width:1;stroke-dasharray:3 3}#chart .dot-now{fill:var(--teal)}#chart .dot-adult{fill:var(--brand)}#chart .lbl{fill:var(--ink);font-size:11px;font-weight:650;font-family:inherit}.disclaimer{font-size:.8rem;color:var(--muted);margin:8px 0 0}.result-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.trust-row{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 14px;padding:0;margin:22px 0 0}.trust-row li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:.86rem;font-weight:600;color:#334155;box-shadow:var(--shadow-sm)}section{scroll-margin-top:72px}.band{padding:56px 0}.band:nth-of-type(2n){background:var(--soft)}.section-title{text-align:center;font-size:clamp(1.3rem,2.4vw,1.5rem);margin:0 0 8px}.section-lead{text-align:center;color:var(--muted);max-width:620px;margin:0 auto 34px}.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}.card h3{margin:4px 0 6px;font-size:1.06rem}.card p{margin:0;color:var(--muted);font-size:.94rem}.card-ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:1.4rem;background:#eaf1ff;margin-bottom:12px}.card.use .card-ic{background:#e6faf8}@media(max-width:900px){.cards-3,.cards-4{grid-template-columns:repeat(2,1fr)}}@media(max-width:560px){.cards-3,.cards-4{grid-template-columns:1fr}}.how{padding:56px 0}.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:none}.step{text-align:center;padding:0 6px}.step-num{display:grid;place-items:center;width:54px;height:54px;margin:0 auto 14px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--teal));color:#fff;font-weight:750;font-size:1.3rem;box-shadow:var(--shadow-sm)}.step h3{margin:0 0 6px;font-size:1.02rem}.step p{margin:0;color:var(--muted);font-size:.92rem}@media(max-width:780px){.steps{grid-template-columns:repeat(2,1fr);gap:28px 22px}}@media(max-width:430px){.steps{grid-template-columns:1fr}}.prose-band{padding:56px 0;background:var(--soft)}.prose{max-width:760px}.prose h2{font-size:clamp(1.3rem,2.4vw,1.5rem);margin:30px 0 10px}.prose h2:first-child{margin-top:0}.prose ul{padding-left:20px}.prose li{margin:5px 0}.prose code{background:#eef2f8;padding:2px 6px;border-radius:6px;font-size:.9em}.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}table{border-collapse:collapse;width:100%;min-width:340px}th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line);font-size:.93rem}thead th{background:#eef3fb;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}tbody tr:last-child td{border-bottom:0;font-weight:650}.faq-band{padding:56px 0}.faq-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:24px}.faq-tab{font:inherit;font-weight:600;cursor:pointer;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted)}.faq-tab.is-active{background:var(--brand);border-color:var(--brand);color:#fff}.faq-list{max-width:760px;margin:0 auto}details{border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:10px 0;background:#fff;box-shadow:var(--shadow-sm)}details summary{cursor:pointer;font-weight:650;list-style:none;position:relative;padding-right:26px}details summary::-webkit-details-marker{display:none}details summary:after{content:"+";position:absolute;right:2px;top:-2px;font-size:1.3rem;color:var(--brand);font-weight:400}details[open] summary:after{content:"−"}details[open] summary{margin-bottom:10px}details p{margin:0;color:var(--muted)}.cta{background:linear-gradient(135deg,var(--brand),var(--teal));color:#fff;padding:60px 0;text-align:center}.cta-inner{max-width:680px}.cta h2{font-size:clamp(1.5rem,3.4vw,2.1rem);margin:0 0 10px}.cta p{margin:0 0 24px;opacity:.92;font-size:1.05rem}.footer{background:var(--navy);color:#cbd5e1}.footer-center{text-align:center;padding:46px 22px 40px}.footer .brand{color:#fff;justify-content:center;margin-bottom:12px}.footer-tagline{color:#94a3b8;max-width:540px;margin:0 auto 20px;font-size:.95rem}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 24px;margin-bottom:18px}.footer-links a{color:#cbd5e1;text-decoration:none;font-size:.92rem}.footer-links a:hover{color:#fff}.footer-copy{color:#94a3b8;font-size:.85rem;margin:0}@media(max-width:560px){.calc-grid{grid-template-columns:1fr}.result-value{font-size:1.7rem}}@media print{.nav,.footer,.cta,.band,.how,.faq-band,.result-actions,.trust-row,.hero-sub,.eyebrow{display:none}.hero{padding:0;background:#fff}.tool-card{box-shadow:none;border:0;padding:0}body{color:#000}}.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}.lang{position:relative;display:inline-flex;padding:0;margin:0;border:0;background:none;box-shadow:none;border-radius:0}.lang>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font-size:.9rem;font-weight:600;user-select:none}.lang>summary::-webkit-details-marker{display:none}.lang>summary:after{content:none}.lang>summary:hover{background:var(--soft);border-color:#d7deea}.lang-flag{width:20px;height:15px;flex:none;border-radius:3px;object-fit:cover;box-shadow:0 0 0 1px #0f172a14;display:block}.lang-caret{font-size:.7rem;color:var(--muted);transition:transform .15s}.lang[open]>summary .lang-caret{transform:rotate(180deg)}.lang-menu{display:none;position:absolute;right:0;top:calc(100% + 8px);z-index:40;min-width:190px;max-height:min(70vh,440px);overflow-y:auto;list-style:none;margin:0;padding:6px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}.lang[open] .lang-menu{display:block}.lang-menu li{margin:0}.lang-menu a{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:8px;color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:550}.lang-menu a:hover{background:var(--soft)}.lang-menu a.is-current{color:var(--brand);font-weight:700}.lang-name{white-space:nowrap}