:root {
  color-scheme: light;
  --paper: #f5f8fc;
  --surface: #ffffff;
  --ink: #172b43;
  --muted: #61748a;
  --line: #dce5ee;
  --blue: #1768ac;
  --blue-deep: #104d83;
  --cyan: #dff3f5;
  --green: #187a65;
  --shadow: 0 12px 32px rgba(23, 43, 67, .07);
  --radius: 12px;
}
:root[data-theme="dark"] { color-scheme: dark; --paper:#101923; --surface:#172432; --ink:#edf4fa; --muted:#a8b8c8; --line:#2d4052; --blue:#69b7f4; --blue-deep:#a8d8ff; --cyan:#213c46; --green:#63d3b2; --shadow:0 12px 32px rgba(0,0,0,.2); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; background:var(--paper); color:var(--ink); font-family: "Aptos", "Segoe UI", sans-serif; line-height:1.6; }
a { color:inherit; text-decoration:none; }
button, input, select, textarea { font:inherit; }
button, .button { cursor:pointer; }
.site-header { position:sticky; top:0; z-index:10; background:color-mix(in srgb,var(--surface) 94%,transparent); border-bottom:1px solid var(--line); backdrop-filter:blur(12px); }
.header-inner { max-width:1160px; min-height:72px; margin:auto; padding:0 24px; display:flex; align-items:center; justify-content:space-between; gap:22px; }
.brand { display:inline-flex; align-items:center; gap:10px; font-weight:750; letter-spacing:0; white-space:nowrap; }
.brand-mark { display:grid; place-items:center; width:34px; height:34px; border-radius:10px; color:#fff; background:var(--blue); font-size:17px; }
.nav { display:flex; align-items:center; gap:26px; color:var(--muted); font-size:14px; font-weight:600; }
.nav a:hover, .nav a[aria-current="page"] { color:var(--blue); }
.header-actions { display:flex; gap:8px; align-items:center; }
.icon-button { display:grid; place-items:center; width:40px; height:40px; border:1px solid var(--line); background:var(--surface); color:var(--ink); border-radius:9px; }
.icon-button:hover { border-color:var(--blue); color:var(--blue); }
.menu-toggle { display:none; }
.wrap { width:min(1160px, calc(100% - 40px)); margin-inline:auto; }
.ad-container { width:min(100%,970px); min-height:0; margin:24px auto; padding:0; display:flex; flex-direction:column; align-items:center; gap:5px; color:var(--muted); font-size:11px; letter-spacing:1.2px; text-transform:uppercase; }
.ad-label { display:block; line-height:1.3; }
.ad-slot { width:min(320px, 100vw); height:50px; display:flex; justify-content:center; align-items:center; overflow:hidden; }
.ad-slot iframe { display:block; width:320px !important; max-width:100%; height:50px !important; border:0; }
.ad-slot--rectangle { width:min(300px, calc(100vw - 32px)); height:250px; }
.ad-slot--rectangle iframe { width:300px !important; max-width:100%; height:250px !important; }
.ad-slot--leaderboard { position:relative; width:min(728px, calc(100vw - 32px)); height:90px; }
.ad-slot--leaderboard iframe { position:absolute; top:0; left:50%; width:728px !important; max-width:none; height:90px !important; transform:scale(var(--leaderboard-scale, 1)) translateX(-50%); transform-origin:top center; }
@media(max-width:767px) {
  .ad-slot--leaderboard { height:calc(90px * var(--leaderboard-scale)); }
  .ad-slot--leaderboard { --leaderboard-scale:.83; }
}
@media(max-width:639px) { .ad-slot--leaderboard { --leaderboard-scale:.72; } }
@media(max-width:559px) { .ad-slot--leaderboard { --leaderboard-scale:.60; } }
@media(max-width:479px) { .ad-slot--leaderboard { --leaderboard-scale:.50; } }
@media(max-width:399px) { .ad-slot--leaderboard { --leaderboard-scale:.45; } }
@media(max-width:359px) { .ad-slot--leaderboard { --leaderboard-scale:.39; } }
.hero { position:relative; overflow:hidden; padding:72px 0 62px; background:linear-gradient(115deg,#e8f3fb 0%,#f4f8fc 55%,#e1f3ef 100%); border-bottom:1px solid var(--line); }
:root[data-theme="dark"] .hero { background:linear-gradient(115deg,#172c3c,#1d2c34 65%,#1d3938); }
.hero:after { content:""; position:absolute; right:-90px; bottom:-210px; width:430px; height:430px; border:1px solid rgba(23,104,172,.12); border-radius:50%; box-shadow:0 0 0 42px rgba(23,104,172,.035),0 0 0 88px rgba(23,104,172,.025); }
.hero-content { position:relative; z-index:1; max-width:710px; }
.eyebrow { color:var(--green); font-size:12px; font-weight:750; text-transform:uppercase; letter-spacing:1.4px; }
h1,h2,h3,p { margin-top:0; }
h1 { font-size:clamp(36px,5vw,54px); line-height:1.08; letter-spacing:0; margin:14px 0 18px; max-width:720px; }
.hero p { max-width:610px; color:var(--muted); font-size:18px; margin-bottom:26px; }
.searchbox { display:flex; max-width:600px; align-items:center; gap:10px; padding:6px 7px 6px 16px; border:1px solid var(--line); border-radius:11px; background:var(--surface); box-shadow:var(--shadow); }
.searchbox input { width:100%; min-width:0; border:0; outline:0; color:var(--ink); background:transparent; padding:10px 0; }
.button { display:inline-flex; align-items:center; justify-content:center; gap:8px; min-height:44px; border:1px solid transparent; padding:10px 17px; border-radius:8px; color:#fff; background:var(--blue); font-size:14px; font-weight:700; transition:background .18s ease, transform .18s ease, border-color .18s ease; }
.button:hover { background:var(--blue-deep); transform:translateY(-1px); }
.button.secondary { color:var(--ink); background:var(--surface); border-color:var(--line); }
.button.secondary:hover { border-color:var(--blue); color:var(--blue); background:var(--surface); }
.section { padding:52px 0; }
.section-head { display:flex; justify-content:space-between; align-items:end; gap:18px; margin-bottom:22px; }
.section-head h2 { font-size:27px; line-height:1.2; margin:0 0 4px; letter-spacing:0; }
.section-head p { color:var(--muted); margin:0; }
.card-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.calc-card { min-width:0; display:flex; flex-direction:column; padding:21px; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); box-shadow:0 3px 12px rgba(23,43,67,.025); transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease; }
.calc-card:hover { transform:translateY(-3px); border-color:#b4d2e8; box-shadow:var(--shadow); }
.calc-icon { display:grid; place-items:center; width:43px; height:43px; margin-bottom:15px; border-radius:11px; background:var(--cyan); color:var(--blue); font-size:21px; }
.calc-card h3 { font-size:17px; margin:0 0 6px; }
.calc-card p { color:var(--muted); font-size:14px; margin:0 0 17px; flex:1; }
.calc-card .button { align-self:flex-start; min-height:39px; padding:8px 13px; }
.no-results { grid-column:1/-1; padding:26px; text-align:center; border:1px dashed var(--line); border-radius:10px; color:var(--muted); }
.category-block { margin:36px 0; }
.category-title { display:flex; align-items:center; gap:10px; font-size:19px; margin-bottom:14px; }
.category-title:after { content:""; height:1px; flex:1; background:var(--line); }
.feature-band { padding:30px; border:1px solid var(--line); border-radius:var(--radius); background:var(--surface); display:flex; justify-content:space-between; align-items:center; gap:22px; }
.feature-band h2 { margin:0 0 5px; font-size:21px; }
.feature-band p { margin:0; color:var(--muted); }
.page-title { padding:34px 0 22px; }
.breadcrumb { color:var(--muted); font-size:13px; margin-bottom:12px; }
.breadcrumb a:hover { color:var(--blue); }
.page-title h1 { font-size:36px; margin:0 0 7px; }
.page-title p { color:var(--muted); margin:0; }
.content-layout { display:block; }
.content-layout > * { min-width:0; }
.content-layout > div { max-width:836px; }
.panel { background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); padding:26px; }
.calculator-panel { max-width:780px; }
.calculator-panel h2 { font-size:18px; margin-bottom:18px; }
.calc-form { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.field { display:flex; flex-direction:column; gap:6px; min-width:0; }
.field.full { grid-column:1/-1; }
.field label { font-size:13px; font-weight:650; }
.field input,.field select,.field textarea { width:100%; min-height:44px; border:1px solid var(--line); border-radius:7px; padding:10px 12px; color:var(--ink); background:var(--surface); outline:none; }
.field input:focus,.field select:focus,.field textarea:focus { border-color:var(--blue); box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 15%,transparent); }
.field textarea { min-height:130px; resize:vertical; }
.field small,.helper { color:var(--muted); font-size:12px; }
.form-actions { display:flex; flex-wrap:wrap; gap:10px; grid-column:1/-1; margin-top:3px; }
.result { margin-top:20px; padding:17px 19px; border:1px solid color-mix(in srgb,var(--green) 35%,var(--line)); border-radius:9px; background:color-mix(in srgb,var(--green) 8%,var(--surface)); }
.result[hidden] { display:none; }
.result strong { display:block; font-size:18px; margin-bottom:3px; }
.result p { margin:0; color:var(--muted); }
.disclaimer { color:var(--muted); font-size:12px; margin:16px 0 0; }
.explanation { max-width:780px; padding:28px 0 12px; color:var(--muted); }
.explanation h2 { color:var(--ink); font-size:20px; }
.sidebar .ad-container { margin:0 0 18px; }
.related { padding-top:25px; }
.related h2 { font-size:20px; margin-bottom:15px; }
.info-copy { max-width:800px; padding-bottom:48px; }
.info-copy h2 { font-size:20px; margin:28px 0 8px; }
.info-copy p,.info-copy li { color:var(--muted); }
.site-footer { margin-top:40px; background:#142b40; color:#eff6fc; }
.footer-inner { max-width:1160px; margin:auto; padding:42px 24px 22px; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:28px; }
.footer-brand { font-size:17px; margin-bottom:10px; }
.footer-grid p { max-width:330px; color:#c1d1df; font-size:13px; }
.footer-grid h3 { font-size:13px; margin:4px 0 12px; }
.footer-links { display:grid; gap:7px; color:#c1d1df; font-size:13px; }
.footer-links a:hover { color:white; text-decoration:underline; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.16); margin-top:30px; padding-top:17px; color:#c1d1df; font-size:12px; display:flex; justify-content:space-between; gap:12px; }
.contact-success { color:var(--green); font-weight:700; margin:12px 0 0; }
@keyframes rise { from { opacity:0; transform:translateY(9px); } to { opacity:1; transform:translateY(0); } }
.animate-in { animation:rise .45s ease both; }
@media(max-width:850px) { .content-layout { grid-template-columns:1fr; } .sidebar { display:grid; grid-template-columns:1fr 1fr; gap:14px; } .sidebar .ad-container { margin:0; } .footer-grid { grid-template-columns:repeat(2,1fr); } }
@media(max-width:680px) { .header-inner { min-height:64px; padding:0 17px; } .menu-toggle { display:grid; } .nav { display:none; position:absolute; top:63px; left:0; right:0; padding:16px 20px 20px; background:var(--surface); border-bottom:1px solid var(--line); flex-direction:column; align-items:stretch; gap:0; box-shadow:var(--shadow); } .nav.open { display:flex; } .nav a { padding:11px 5px; } .brand { font-size:14px; } .header-actions { margin-left:auto; } .wrap { width:min(100% - 32px,1160px); } .hero { padding:48px 0 43px; } .hero p { font-size:16px; } .searchbox { align-items:stretch; } .searchbox .button { padding-inline:12px; white-space:nowrap; } .section { padding:38px 0; } .section-head { align-items:start; flex-direction:column; } .card-grid { grid-template-columns:1fr; } .feature-band { align-items:flex-start; flex-direction:column; padding:22px; } .page-title h1 { font-size:30px; } .panel { padding:20px; } .calc-form { grid-template-columns:1fr; } .field.full,.form-actions { grid-column:auto; } .sidebar { grid-template-columns:1fr; } .sidebar .ad-container { min-height:100px; } .footer-inner { padding:32px 18px 20px; } .footer-grid { grid-template-columns:1fr 1fr; gap:24px 18px; } .footer-grid > :first-child { grid-column:1/-1; } .footer-bottom { flex-direction:column; } }
@media(prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; animation-duration:.01ms!important; transition-duration:.01ms!important; } }