:root{
  --navy:#08172A; --navy-2:#0F2A47; --pool:#1F7DC9; --pool-2:#268BDB; --cyan:#51BCCC; --pink:#E0179F;
  --bg:#F5F8FB; --surface:#FFFFFF; --surface-2:#EAF1F7; --line:#D3DFEA;
  --ink:#0C1B2E; --ink-2:#465A70; --ink-3:#6E8297;
  --good:#138A5A; --good-bg:#DDF3E9; --warn:#9A6A00; --warn-bg:#FBF0D2; --bad:#C93A36; --bad-bg:#FBE1DF;
  --grad:linear-gradient(180deg,#51BCCC 0%,#3AA4D3 50%,#268BDB 100%);
  --shadow:0 1px 2px rgba(11,37,69,.06),0 8px 24px rgba(11,37,69,.07);
  --r:16px; --display:"Montserrat",system-ui,sans-serif; --font:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1120px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark; --bg:#07111D; --surface:#0E1C2E; --surface-2:#15283F; --line:#233A53;
  --ink:#E6EFF7; --ink-2:#A6B9CC; --ink-3:#7C93A9; --pool:#5AAEF0; --pool-2:#4FA6EC;
  --good:#3CC98C; --good-bg:#0F3325; --warn:#F0B72F; --warn-bg:#3A2D0A; --bad:#F2726D; --bad-bg:#3E1716;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
}}
:root[data-theme="dark"]{color-scheme:dark; --bg:#07111D; --surface:#0E1C2E; --surface-2:#15283F; --line:#233A53;
  --ink:#E6EFF7; --ink-2:#A6B9CC; --ink-3:#7C93A9; --pool:#5AAEF0; --pool-2:#4FA6EC;
  --good:#3CC98C; --good-bg:#0F3325; --warn:#F0B72F; --warn-bg:#3A2D0A; --bad:#F2726D; --bad-bg:#3E1716;}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font);overflow-x:hidden}
img{max-width:100%;height:auto}
a{color:var(--pool)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:2px;border-radius:6px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--surface);padding:8px 12px;z-index:99}
h1,h2,h3{font-family:var(--display);line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800}
h2{font-size:clamp(1.5rem,3.2vw,2.1rem);font-weight:800}
h3{font-size:1.15rem;font-weight:700}
p{margin:0 0 1em}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:680px}
.muted{color:var(--ink-2)} .small{font-size:.875rem}
/* header */
.site-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:16px;height:68px}
.brand{white-space:nowrap;display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:800 1.02rem/1.1 var(--display);margin-right:auto}
.brand img{width:40px;height:34px}
.brand .logo-dark{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .brand .logo-light{display:none}:root:not([data-theme="light"]) .brand .logo-dark{display:block}}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;padding:8px 10px;border-radius:8px;white-space:nowrap}
.nav a:hover,.nav a[aria-current="page"]{background:var(--surface-2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;text-decoration:none;font:700 1rem var(--font);padding:12px 20px;border-radius:12px;min-height:44px}
.btn-primary{background:var(--pool-2);color:#fff}.btn-primary:hover{filter:brightness(1.07)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}.btn-ghost:hover{background:var(--surface-2)}
.nav .btn{padding:9px 16px;color:#fff}
.menu{display:none}
@media (max-width:1240px){
  .nav{display:none}
  .menu{display:block;position:relative}
  .menu summary{list-style:none;cursor:pointer;padding:10px;border-radius:10px;border:1.5px solid var(--line);font-weight:700}
  .menu summary::-webkit-details-marker{display:none}
  .menu[open] .menu-panel{display:flex}
  .menu-panel{display:none;position:absolute;right:0;top:52px;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;min-width:240px}
  .menu-panel a{padding:12px;color:var(--ink);text-decoration:none;font-weight:600;border-radius:8px}
  .menu-panel a:hover{background:var(--surface-2)}
  .menu-panel .btn{color:#fff;margin-top:6px}
}
/* sections */
.hero{padding:64px 0 40px}
.eyebrow{display:inline-block;font-weight:700;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--pool);background:var(--surface-2);padding:6px 12px;border-radius:999px;margin-bottom:16px}
.section{padding:48px 0}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.card h3{margin-bottom:.35em}
.card p:last-child{margin-bottom:0}
.icon-dot{width:40px;height:40px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:800;margin-bottom:14px}
.icon-dot svg{width:22px;height:22px}
.banner{background:var(--navy);color:#E6EFF7;border-radius:var(--r);padding:28px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.banner h2{color:#fff;margin:0 0 4px;font-size:1.4rem}
.banner p{margin:0;color:#B8CADB}
.note{background:var(--surface-2);border-radius:12px;padding:14px 16px;font-size:.92rem;color:var(--ink-2)}
ul.check{list-style:none;padding:0;margin:0}
ul.check li{padding-left:28px;position:relative;margin:8px 0}
ul.check li::before{content:"";position:absolute;left:2px;top:7px;width:14px;height:8px;border-left:2.5px solid var(--good);border-bottom:2.5px solid var(--good);transform:rotate(-45deg)}
/* pricing */
.toggle{display:inline-flex;background:var(--surface-2);border-radius:12px;padding:4px;gap:4px;margin:8px 0 28px}
.toggle button{border:0;background:transparent;font:700 .95rem var(--font);padding:10px 16px;border-radius:9px;cursor:pointer;color:var(--ink-2);min-height:40px}
.toggle button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
.save{color:var(--good);font-weight:700}
.plans{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.plan{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);position:relative}
.plan.pop{border:2px solid var(--pool-2)}
.plan .tag{position:absolute;top:-12px;left:20px;background:var(--pool-2);color:#fff;font-size:.75rem;font-weight:800;padding:4px 10px;border-radius:999px}
.plan h3{font-size:1.05rem}
.plan .who{color:var(--ink-2);font-size:.9rem;min-height:2.8em}
.price{font:800 2.1rem/1 var(--display);margin:12px 0 4px}
.price small{font:600 .9rem var(--font);color:var(--ink-2)}
.per{color:var(--ink-3);font-size:.85rem;min-height:1.4em;margin-bottom:14px}
.plan ul.check{font-size:.92rem;margin-bottom:18px;flex:1}
.plan .btn{width:100%;white-space:nowrap;padding:12px 10px}
.plan .price small{white-space:nowrap}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:.93rem}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:var(--display);font-size:.9rem;background:var(--surface-2)}
tbody tr:last-child td{border-bottom:0}
td.y{color:var(--good);font-weight:700} td.n{color:var(--ink-3)}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:4px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style-position:outside}
.faq details p{color:var(--ink-2)}
/* calculator */
.calc{display:grid;gap:24px;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}
@media (max-width:860px){.calc{grid-template-columns:1fr}}
.field{margin-bottom:16px}
.field label{display:block;font-weight:700;font-size:.92rem;margin-bottom:6px}
.field .hint{font-weight:500;color:var(--ink-3)}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
input[type=number],select{width:100%;font:600 1rem var(--font);color:var(--ink);background:var(--bg);border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;min-height:44px}
input[type=number]:focus,select:focus{border-color:var(--pool-2);outline:none}
fieldset{border:0;padding:0;margin:0 0 8px}
legend{font:800 1rem var(--display);margin-bottom:12px;padding:0}
.result{border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:12px;background:var(--surface)}
.result-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.result h3{margin:0;font-size:1rem}
.pill{font-size:.78rem;font-weight:800;padding:3px 10px;border-radius:999px;white-space:nowrap}
.pill.good{background:var(--good-bg);color:var(--good)} .pill.warn{background:var(--warn-bg);color:var(--warn)} .pill.bad{background:var(--bad-bg);color:var(--bad)}
.dose{font:800 1.35rem/1.3 var(--display);margin:10px 0 4px}
.result p{margin:6px 0 0;color:var(--ink-2);font-size:.92rem}
/* footer */
.site-foot{border-top:1px solid var(--line);margin-top:56px;padding:36px 0 48px;color:var(--ink-2);font-size:.92rem}
.foot-grid{display:flex;flex-wrap:wrap;gap:24px 48px;justify-content:space-between}
.foot-grid nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.foot-grid a{color:var(--ink-2);text-decoration:none}.foot-grid a:hover{color:var(--ink)}
.crumbs{font-size:.85rem;color:var(--ink-3);margin-bottom:12px}.crumbs a{color:var(--ink-3)}
@media print{.site-head,.site-foot,.cta-row{display:none}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
textarea{width:100%;font:500 1rem var(--font);color:var(--ink);background:var(--bg);border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;resize:vertical}
textarea:focus{border-color:var(--pool-2);outline:none}
input[type=text],input[type=tel],input[type=email]{width:100%;font:600 1rem var(--font);color:var(--ink);background:var(--bg);border:1.5px solid var(--line);border-radius:10px;padding:11px 12px;min-height:44px}
input[type=text]:focus,input[type=tel]:focus,input[type=email]:focus{border-color:var(--pool-2);outline:none}
button:disabled,input:disabled,select:disabled,textarea:disabled{opacity:.6;cursor:not-allowed}
@media (max-width:520px){.pair{grid-template-columns:1fr}}
.prose{max-width:760px}
.prose h1{font-size:clamp(1.8rem,4.4vw,2.6rem)}
.prose h2{margin-top:1.6em}
.prose p,.prose li{font-size:1.05rem}
.prose ol{padding-left:1.3em}.prose ol li{margin:8px 0}
.prose .table-wrap{margin:8px 0 12px}