*{box-sizing:border-box}
:root{
  --bg:#ffffff;
  --surface:#ffffff;
  --surface-soft:#f7f9ff;
  --surface-tint:#eef5ff;
  --text:#121a2b;
  --muted:#67748d;
  --border:#e5eaf3;
  --primary:#3567f1;
  --primary-2:#6a42ee;
  --cyan:#18b7d8;
  --pink:#f15bb5;
  --success:#159f74;
  --danger:#d33f55;
  --shadow:0 18px 55px rgba(31,54,95,.10);
  --radius:18px;
  --max:1160px;
}
[data-theme="dark"]{
  --bg:#0a1020;
  --surface:#11192c;
  --surface-soft:#0e1728;
  --surface-tint:#15284b;
  --text:#f5f8ff;
  --muted:#a8b4c8;
  --border:#243148;
  --primary:#6c94ff;
  --primary-2:#8b6ef4;
  --cyan:#2ecfe8;
  --pink:#ff73c4;
  --success:#48d6a0;
  --danger:#ff768b;
  --shadow:0 18px 65px rgba(0,0,0,.30);
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
body.modal-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 36px));margin-inline:auto}
.top-strip{background:#0f1730;color:#b8c3d8;font-size:11px}
.top-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:7px 0}
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav{height:74px;display:flex;align-items:center;gap:30px}
.brand{display:flex;align-items:center;gap:10px;font-weight:850;letter-spacing:-.04em;white-space:nowrap}
.brand-mark{width:39px;height:39px;display:grid;place-items:center}
.brand-mark svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:17px}
.brand-text b{color:var(--primary)}
.desktop-nav{display:flex;align-items:center;gap:4px}
.desktop-nav a{font-size:13px;padding:9px 11px;border-radius:10px;color:var(--muted)}
.desktop-nav a:hover{color:var(--text);background:var(--surface-soft)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.theme-btn{width:40px;height:40px;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text);display:grid;place-items:center}
.theme-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:11px;padding:12px 17px;font-weight:800;font-size:13px;min-height:44px}
.btn-small{min-height:40px;padding:10px 14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 12px 28px rgba(53,103,241,.22)}
.btn-primary:hover{transform:translateY(-1px);filter:saturate(1.08)}
.btn-soft{background:var(--surface-tint);color:var(--primary)}
.btn-soft:hover{background:var(--surface);border-color:var(--border)}
.btn-outline{background:var(--surface);color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{background:var(--surface-soft)}
.mobile-menu{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--border);background:var(--surface);border-radius:11px;flex-direction:column;justify-content:center;align-items:center;gap:4px}
.mobile-menu span{width:19px;height:2px;background:currentColor;border-radius:2px}
.mobile-nav{display:none;border-top:1px solid var(--border);padding:14px 18px 18px;background:var(--surface)}
.mobile-nav a{display:block;padding:11px 2px;font-size:14px;color:var(--muted)}
.mobile-nav .btn{margin-top:8px;color:#fff;text-align:center}
.mobile-nav.open{display:block}

.hero{position:relative;overflow:hidden;padding:83px 0 72px;background:
  radial-gradient(circle at 78% 20%,rgba(98,129,255,.17),transparent 34%),
  radial-gradient(circle at 17% 28%,rgba(24,183,216,.12),transparent 28%),
  linear-gradient(180deg,var(--bg),var(--surface-soft))}
.hero:after{content:"";position:absolute;inset:auto 0 0;height:1px;background:var(--border)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero-copy{max-width:640px}
.eyebrow,.kicker{color:var(--primary);font-weight:850;letter-spacing:.12em;text-transform:uppercase;font-size:10px}
.eyebrow{display:inline-flex;gap:7px;align-items:center;padding:7px 11px;border-radius:999px;background:var(--surface-tint);border:1px solid #d5e3ff}
.hero h1{font-size:62px;line-height:1.02;letter-spacing:-.065em;margin:20px 0 18px}
.hero h1 span{background:linear-gradient(135deg,var(--primary),var(--primary-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy>p{font-size:17px;color:var(--muted);max-width:600px;margin:0 0 27px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.hero-trust{display:flex;flex-wrap:wrap;gap:16px;margin-top:22px;color:var(--muted);font-size:11px}
.hero-trust span{display:inline-flex;align-items:center;gap:7px}
.hero-trust i{width:7px;height:7px;background:var(--success);border-radius:50%;display:inline-block}
.hero-card{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:var(--shadow);position:relative}
.hero-card:before{content:"";position:absolute;inset:-18px -16px auto auto;width:130px;height:130px;background:linear-gradient(135deg,rgba(53,103,241,.15),rgba(241,91,181,.08));border-radius:50%;filter:blur(2px);pointer-events:none}
.hero-card-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:21px}
.hero-card-top small{display:block;color:var(--muted);font-size:9px;font-weight:850;letter-spacing:.1em}
.hero-card-top strong{display:block;font-size:20px;letter-spacing:-.03em;margin-top:3px}
.mini-badge{font-size:9px;font-weight:900;color:var(--primary);padding:5px 8px;background:var(--surface-tint);border-radius:999px}
.mini-field{margin-bottom:14px}
.mini-field label{display:block;font-size:10px;color:var(--muted);margin-bottom:6px;font-weight:750}
.fake-input{height:45px;border:1px solid var(--border);border-radius:11px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;font-size:12px;background:var(--surface-soft)}
.mini-result{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
.mini-result>div{padding:14px;border:1px solid var(--border);border-radius:13px;background:linear-gradient(145deg,var(--surface-soft),var(--surface))}
.mini-result span{display:block;color:var(--muted);font-size:10px}
.mini-result strong{display:block;font-size:23px;letter-spacing:-.04em;margin-top:5px}
.mini-result small{font-size:10px;color:var(--muted);font-weight:650}

.section{padding:88px 0}
.section-heading{max-width:760px;margin-bottom:31px}
.section-heading.center{text-align:center;margin-inline:auto}
.section-heading h2{font-size:38px;line-height:1.1;letter-spacing:-.05em;margin:7px 0 10px}
.section-heading p{color:var(--muted);font-size:14px;margin:0}
.section-heading a{color:var(--primary);font-weight:750}
.calculator-section{background:var(--surface-soft)}
.calculator-card{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:26px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:flex;align-items:center;justify-content:space-between;font-size:12px;font-weight:800;margin-bottom:7px}
.field label span{color:var(--danger)}
.field input{width:100%;height:48px;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text);padding:0 12px;outline:none}
.field input:focus{border-color:#88a8f6;box-shadow:0 0 0 4px rgba(53,103,241,.09)}
.field small{display:block;color:var(--muted);font-size:10px;margin-top:6px}
.date-inline{display:grid;grid-template-columns:1fr auto;gap:8px}
.today-btn{height:48px;padding:0 13px;border:1px solid var(--border);border-radius:11px;background:var(--surface-soft);color:var(--primary);font-size:11px;font-weight:800}
.today-btn:hover{background:var(--surface)}
.error-message{min-height:20px;color:var(--danger);font-size:11px;margin:10px 0 0}
.calculator-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:6px}
.privacy-note{margin-top:20px;padding:15px 16px;border:1px solid var(--border);background:var(--surface-soft);border-radius:13px;display:flex;gap:11px;align-items:flex-start}
.privacy-icon{width:25px;height:25px;display:grid;place-items:center;border-radius:8px;background:#e5f8f1;color:var(--success);font-weight:900}
.privacy-note strong{font-size:11px}
.privacy-note p{margin:2px 0 0;color:var(--muted);font-size:10px}

.results-area{margin-top:22px;display:grid;grid-template-columns:1.45fr .85fr;gap:16px}
.result-card,.info-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:0 12px 35px rgba(31,54,95,.06)}
.result-card{padding:26px}
.result-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}
.result-header h3{font-size:24px;letter-spacing:-.04em;margin:5px 0 0}
.result-chip{padding:7px 10px;background:var(--surface-tint);color:var(--primary);border-radius:999px;font-size:10px;font-weight:800;white-space:nowrap}
.exact-age-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0 18px}
.age-part{border-radius:16px;padding:18px;background:linear-gradient(145deg,var(--surface-soft),var(--surface));border:1px solid var(--border);text-align:center}
.age-part strong{display:block;font-size:45px;line-height:1;letter-spacing:-.06em}
.age-part span{display:block;color:var(--muted);font-size:11px;margin-top:5px;font-weight:800}
.result-summary{border-left:3px solid var(--primary);padding:10px 13px;background:var(--surface-soft);border-radius:8px;color:var(--muted);font-size:12px}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:15px}
.stat{border:1px solid var(--border);border-radius:12px;padding:13px;background:var(--surface)}
.stat span{display:block;color:var(--muted);font-size:9px;text-transform:uppercase;letter-spacing:.08em;font-weight:850}
.stat strong{display:block;margin-top:4px;font-size:18px;letter-spacing:-.03em}
.result-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.result-side-grid{display:grid;gap:16px}
.info-card{padding:22px}
.card-icon,.tool-card-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;margin-bottom:13px;font-size:18px}
.icon-pink{background:#fff0f8;color:#d63f97}.icon-blue{background:#e9f1ff;color:#3567f1}
.info-card h3{font-size:22px;margin:6px 0 5px;letter-spacing:-.04em}
.info-card p{margin:0 0 14px;color:var(--muted);font-size:12px}
.weekday-box{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);padding-top:12px}
.weekday-box span{font-size:10px;color:var(--muted)}
.weekday-box strong{font-size:13px}
.live-value{font-size:19px;line-height:1.45;font-weight:850;letter-spacing:-.03em;margin:14px 0}

.tools-section{background:var(--bg)}
.tool-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tool-card{border:1px solid var(--border);background:var(--surface);border-radius:18px;padding:22px}
.tool-card-icon{margin-bottom:11px;font-weight:900;font-size:18px}
.icon-purple{background:#f2edff;color:#6a42ee}.icon-cyan{background:#e7fbff;color:#1189a4}
.tool-card h3{margin:0 0 6px;font-size:20px;letter-spacing:-.035em}
.tool-card>p{margin:0;color:var(--muted);font-size:11px}
.compact-grid{margin-top:17px}
.tool-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}
.tool-result{margin-top:13px;border:1px solid var(--border);background:var(--surface-soft);border-radius:12px;padding:13px;font-size:12px}
.tool-result strong{color:var(--primary)}
.tool-result .big{font-size:20px;font-weight:900;display:block;margin:3px 0}

.examples-section{background:var(--surface-soft)}
.example-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.example-card{border:1px solid var(--border);background:var(--surface);border-radius:14px;padding:18px;text-align:left;color:var(--text);display:flex;flex-direction:column;gap:8px}
.example-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#b9cdf7}
.example-card span{font-size:13px;font-weight:800}
.example-card strong{font-size:10px;color:var(--primary)}

.how-section{background:var(--bg)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.step{padding:18px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}
.step>span{display:inline-grid;place-items:center;width:31px;height:31px;border-radius:9px;background:var(--surface-tint);color:var(--primary);font-size:10px;font-weight:900}
.step h3{font-size:14px;margin:12px 0 5px}
.step p{font-size:11px;color:var(--muted);margin:0}

.content-section{background:var(--surface-soft)}
.content-grid{display:grid;grid-template-columns:1.6fr .8fr;gap:60px}
.content-section h2{font-size:38px;letter-spacing:-.05em;line-height:1.12;margin:8px 0 18px}
.content-section h3{font-size:20px;letter-spacing:-.03em;margin:26px 0 8px}
.content-section p,.content-section li{font-size:13px;color:var(--muted)}
.content-section p{margin:0 0 12px}
.content-section ul{padding-left:19px}
.content-section a{color:var(--primary);font-weight:750}
.content-aside{display:grid;align-content:start;gap:12px}
.aside-card{padding:19px;border:1px solid var(--border);background:var(--surface);border-radius:14px}
.aside-icon{font-size:22px;margin-bottom:11px}
.aside-card h3{font-size:15px;margin:0 0 5px}
.aside-card p{font-size:11px;color:var(--muted);margin:0}

.faq-section{background:var(--bg)}
.narrow{max-width:900px}
.faq-list{display:grid;gap:9px}
.faq-list details{border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:0 16px}
.faq-list summary{cursor:pointer;list-style:none;font-weight:800;font-size:13px;padding:15px 0;position:relative;padding-right:28px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";position:absolute;right:2px;top:12px;font-size:19px;color:var(--primary)}
.faq-list details[open] summary:after{content:"−"}
.faq-list details p{color:var(--muted);font-size:12px;padding:0 0 15px;margin:0;max-width:760px}

.more-tools{background:var(--surface-soft)}
.more-tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.network-link{padding:13px 14px;border:1px solid var(--border);border-radius:11px;background:var(--surface);font-size:11px;font-weight:750}
.network-link:hover{border-color:#b7caf0;color:var(--primary);transform:translateY(-1px)}

.footer{background:#0b1020;color:#dbe4f2;padding:56px 0 20px}
.footer .brand{color:#fff}
.footer .brand-text b{color:#79a0ff}
.footer-grid{display:grid;grid-template-columns:1.65fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{max-width:300px;color:#8d9ab0;font-size:11px}
.footer h4{font-size:10px;letter-spacing:.08em;text-transform:uppercase;margin:0 0 10px}
.footer a{display:block;color:#8d9ab0;font-size:11px;padding:4px 0}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid #212c3d;margin-top:30px;padding-top:16px;display:flex;justify-content:space-between;gap:16px;color:#718097;font-size:10px}

.toast{position:fixed;left:50%;bottom:22px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#111a2b;color:#fff;border:1px solid #2d3d57;border-radius:11px;padding:11px 14px;font-size:11px;z-index:100;box-shadow:var(--shadow);transition:.22s ease}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:1000px){
  .desktop-nav{display:none}
  .mobile-menu{display:flex}
  .nav-actions{display:none}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-copy{max-width:760px;text-align:center;margin:auto}
  .hero-actions,.hero-trust{justify-content:center}
  .hero h1{font-size:52px}
  .hero-card{max-width:640px;width:100%;margin:auto}
  .results-area{grid-template-columns:1fr}
  .result-side-grid{grid-template-columns:1fr 1fr}
  .content-grid{grid-template-columns:1fr}
  .content-aside{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .more-tools-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:720px){
  .container{width:min(var(--max),calc(100% - 28px))}
  .top-strip-inner{flex-direction:column;gap:0;align-items:flex-start;font-size:9px}
  .nav{height:64px}
  .hero{padding:58px 0 50px}
  .hero h1{font-size:39px}
  .hero-copy>p{font-size:14px}
  .section{padding:62px 0}
  .section-heading h2,.content-section h2{font-size:31px}
  .form-grid,.tool-columns,.result-side-grid{grid-template-columns:1fr}
  .exact-age-grid{grid-template-columns:1fr 1fr}
  .exact-age-grid .age-part:last-child{grid-column:1/-1}
  .stats-grid{grid-template-columns:1fr 1fr}
  .example-grid,.steps,.content-aside{grid-template-columns:1fr 1fr}
  .more-tools-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:460px){
  .hero h1{font-size:33px}
  .hero-card{padding:18px}
  .calculator-card,.result-card,.info-card,.tool-card{padding:18px}
  .section-heading h2,.content-section h2{font-size:28px}
  .exact-age-grid{grid-template-columns:1fr 1fr}
  .stats-grid,.example-grid,.steps,.content-aside,.more-tools-grid,.footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .footer-bottom{flex-direction:column}
  .mini-result{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
@media print{
  body{background:#fff;color:#111}
  .top-strip,.site-header,.hero,.tools-section,.examples-section,.how-section,.content-section,.faq-section,.more-tools,.footer,.privacy-note,.calculator-card,.result-actions{display:none!important}
  .calculator-section{padding:0;background:#fff}
  .results-area{display:block;margin:0}
  .result-card,.info-card{box-shadow:none;border:1px solid #bbb}
  .result-side-grid{display:grid;grid-template-columns:1fr 1fr;margin-top:12px}
  .section-heading{margin:0 0 15px}
  .result-card{break-inside:avoid}
}