/* HealthOS public site — design system mirrors healthosnow.com
   (porcelain/ink palette, Fraunces + Inter + IBM Plex Mono, pulse accent). */
:root{
  --porcelain:#FAFAF8;
  --porcelain-2:#F2F0E8;
  --ink:#0B1220;
  --ink-2:#101A2E;
  --pulse:#0FA98C;
  --pulse-deep:#0B7F69;   /* pulse text on porcelain: 4.6:1 */
  --pulse-dim:#0FA98C33;
  --coral:#E8543E;
  --mist:#8A93A3;
  --text-2:#4A5468;       /* body copy on porcelain: 7.9:1 */
  --line:#E4E1D8;
  --line-dark:#22304A;
  --serif:'Fraunces', Georgia, serif;
  --sans:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, monospace;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth; scroll-padding-top:80px;}
body{
  background:var(--porcelain); color:var(--ink);
  font-family:var(--sans); font-size:16px; line-height:1.5;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
a{color:inherit; text-decoration:none;}
img,svg{display:block; max-width:100%;}
button{font-family:inherit; cursor:pointer;}
ul,ol{list-style:none;}
::selection{background:var(--pulse); color:#fff;}
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible{
  outline:2px solid var(--pulse); outline-offset:3px; border-radius:3px;
}

.wrap{max-width:1180px; margin:0 auto; padding:0 32px;}
@media(max-width:640px){ .wrap{padding:0 20px;} }

.eyebrow{
  font-family:var(--mono); font-size:12px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--pulse-deep); display:flex; align-items:center; gap:8px;
}
.eyebrow::before{
  content:''; width:6px; height:6px; border-radius:50%; flex:none;
  background:var(--pulse); box-shadow:0 0 0 4px var(--pulse-dim);
}
h1,h2,h3{font-family:var(--serif); font-weight:400; line-height:1.08; letter-spacing:-.01em;}
.serif-em, h2 em{font-style:italic; color:var(--pulse-deep);}
.text-link{color:var(--ink); border-bottom:1px solid var(--line); white-space:nowrap;}
.text-link:hover{border-color:var(--ink);}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:11px 22px; border-radius:100px; font-size:14px; font-weight:500;
  border:1px solid transparent; transition:transform .2s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn-primary{background:var(--ink); color:var(--porcelain);}
.btn-primary:hover{transform:translateY(-1px); box-shadow:0 8px 24px -8px rgba(11,18,32,.5);}
.btn-ghost{border-color:var(--line); color:var(--ink); background:transparent;}
.btn-ghost:hover{border-color:var(--ink);}
.btn-on-dark{background:var(--pulse); color:var(--ink);}
.btn-on-dark:hover{transform:translateY(-1px); box-shadow:0 8px 24px -8px var(--pulse);}
.btn-block{width:100%; padding:14px 22px; font-size:15px;}
.btn:disabled{opacity:.6; cursor:progress; transform:none; box-shadow:none;}

/* ---------- NAV ---------- */
nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(250,250,248,.78);
  backdrop-filter:blur(14px) saturate(160%); -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid transparent; transition:border-color .3s ease;
}
nav.scrolled{border-bottom-color:var(--line);}
.nav-inner{max-width:1180px; margin:0 auto; padding:16px 32px; display:flex; align-items:center; justify-content:space-between; gap:20px;}
.logo{font-family:var(--serif); font-size:20px; font-weight:500; display:flex; align-items:center; gap:10px;}
.logo-mark{width:9px; height:9px; border-radius:50%; background:var(--pulse); box-shadow:0 0 0 5px var(--pulse-dim); flex:none;}
.nav-links{display:flex; gap:30px; align-items:center;}
.nav-links a{font-size:14px; opacity:.72; transition:opacity .2s;}
.nav-links a:hover{opacity:1;}
.nav-cta{display:flex; align-items:center; gap:18px;}
.nav-login{font-size:14px; opacity:.72;}
.nav-login:hover{opacity:1;}
.hamburger{
  display:none; flex-direction:column; justify-content:center; align-items:center; gap:5px;
  background:none; border:none; width:44px; height:44px; border-radius:8px;
}
.hamburger span{width:20px; height:1.5px; background:var(--ink); display:block; transition:transform .2s ease, opacity .2s ease;}
.hamburger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
@media(max-width:960px){
  .nav-links{
    flex-direction:column; align-items:stretch; gap:0;
    position:fixed; top:64px; left:0; right:0;
    /* nav's backdrop-filter makes it the containing block, so size the panel explicitly */
    height:calc(100vh - 64px); height:calc(100dvh - 64px); overflow-y:auto;
    background:var(--porcelain); padding:12px 20px 32px;
    transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:opacity .22s ease, transform .22s ease;
  }
  .nav-links.open{transform:none; opacity:1; pointer-events:auto;}
  .nav-links a{padding:15px 4px; border-bottom:1px solid var(--line); font-size:17px; opacity:1;}
  .nav-links .mobile-cta{margin-top:14px; border-radius:100px; border-bottom:1px solid var(--line); padding:14px 22px;}
  .nav-links .mobile-cta.btn-primary{color:var(--porcelain); border-color:transparent;}
  .nav-cta .nav-login, .nav-cta .btn-primary{display:none;}
  .hamburger{display:flex;}
}
@media(min-width:961px){ .nav-links .mobile-cta{display:none;} }

/* ---------- HERO ---------- */
.hero{position:relative; padding:168px 0 72px; overflow:hidden;}
.hero-inner{max-width:1180px; margin:0 auto; padding:0 32px; position:relative; z-index:2;}
.hero-eyebrow{margin-bottom:28px;}
.hero h1{font-size:clamp(40px,6.2vw,80px); max-width:760px; margin-bottom:26px;}
.hero h1 em{font-style:italic; color:var(--pulse);}
.hero .lede{font-size:clamp(16px,1.7vw,19px); color:var(--text-2); max-width:520px; margin-bottom:40px; line-height:1.6;}
.hero-ctas{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:64px;}
.hero-proof{display:flex; gap:40px; flex-wrap:wrap; padding-top:28px; border-top:1px solid var(--line); max-width:600px;}
.proof-item .num{font-family:var(--mono); font-size:26px;}
.proof-item .lbl{font-size:12.5px; color:var(--mist); margin-top:3px;}
@media(max-width:640px){ .hero{padding:120px 0 56px;} .hero-inner{padding:0 20px;} .hero-proof{gap:24px 32px;} }

.network-stage{position:absolute; top:90px; right:-2%; width:52%; max-width:640px; z-index:1; pointer-events:none;}
@media(max-width:960px){ .network-stage{display:none;} }
.net-lines line{stroke:var(--pulse); stroke-opacity:.35; stroke-width:1.2;}
.net-nodes circle{fill:var(--ink);}
.net-nodes circle.hub{fill:var(--pulse); stroke:var(--pulse-dim); stroke-width:10;}
.net-packets circle{fill:var(--pulse);}
.node-label{font-family:var(--mono); font-size:10.5px; letter-spacing:.06em; fill:var(--ink); opacity:.68;}

.pulse-divider{width:100%; height:64px;}
.pulse-divider path{stroke:var(--pulse); stroke-width:1.4; fill:none; stroke-dasharray:1400; stroke-dashoffset:1400; animation:draw 2.4s ease-out .4s forwards;}
@keyframes draw{to{stroke-dashoffset:0;}}

/* ---------- SECTION SHELL ---------- */
section{position:relative;}
.section-pad{padding:110px 0;}
@media(max-width:640px){ .section-pad{padding:76px 0;} }
.section-head{max-width:640px; margin-bottom:56px;}
.section-head h2{font-size:clamp(28px,4vw,44px); margin-top:18px;}
.section-head p{color:var(--text-2); font-size:16px; margin-top:16px; line-height:1.65;}
.on-dark{background:var(--ink); color:var(--porcelain);}
.on-dark .section-head p{color:#A9B6CC;}
.on-dark .eyebrow{color:var(--pulse);}
.on-dark h2 em{color:var(--pulse);}

/* ---------- FEATURE CARDS ---------- */
.module-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
@media(max-width:900px){ .module-grid{grid-template-columns:1fr;} }
.module-card{background:var(--porcelain); padding:36px 30px; transition:background .25s ease;}
.module-card:hover{background:#F3F6F1;}
.module-card .icon{width:34px; height:34px; margin-bottom:24px; color:var(--pulse);}
.module-card h3{font-family:var(--sans); font-size:18px; font-weight:500; margin-bottom:10px; line-height:1.3;}
.module-card p{font-size:14.5px; color:var(--text-2); line-height:1.65;}

/* ---------- STATS ---------- */
.stat-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line-dark); border:1px solid var(--line-dark);}
@media(max-width:760px){ .stat-grid{grid-template-columns:repeat(2,1fr);} }
.stat-cell{background:var(--ink); padding:34px 26px;}
.stat-cell .num{font-family:var(--mono); font-size:clamp(30px,3.4vw,42px); color:var(--pulse);}
.stat-cell .lbl{font-size:13.5px; color:#A9B6CC; margin-top:10px; line-height:1.5;}

/* ---------- MODULE GROUPS ---------- */
.cap-groups{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
@media(max-width:900px){ .cap-groups{grid-template-columns:repeat(2,1fr);} }
@media(max-width:620px){ .cap-groups{grid-template-columns:1fr;} }
.cap-group{background:var(--porcelain); padding:30px 26px;}
.cap-group h3{font-size:20px; margin-bottom:4px;}
.cap-group .cap-sub{font-family:var(--mono); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--pulse-deep); margin-bottom:16px;}
.cap-group li{font-size:14px; line-height:1.5; color:var(--text-2); padding:9px 0 9px 18px; position:relative; border-bottom:1px solid var(--line);}
.cap-group li:last-child{border-bottom:none;}
.cap-group li::before{content:''; position:absolute; left:0; top:16px; width:6px; height:6px; border-radius:50%; background:var(--pulse);}

/* ---------- WHY US ---------- */
@media(min-width:961px){ .why-split{display:grid; grid-template-columns:5fr 7fr; gap:72px; align-items:start;} }
.why-quote{margin-top:36px; border-left:3px solid var(--pulse); padding:4px 0 4px 20px;}
.why-quote .q-name{display:block; font-family:var(--serif); font-size:22px; line-height:1.3;}
.why-quote .q-role{display:block; font-family:var(--mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:#A9B6CC; margin-top:6px;}
.why-list{border-top:1px solid var(--line-dark);}
.why-list li{display:grid; grid-template-columns:4px 1fr; gap:20px; padding:26px 0; border-bottom:1px solid var(--line-dark);}
.why-list li{row-gap:6px;}
.why-list li::before{content:''; background:var(--pulse); border-radius:2px; grid-row:span 2;}
.why-list strong{grid-column:2; display:block; font-size:clamp(18px,2vw,21px); font-weight:500; line-height:1.4;}
.why-list span{grid-column:2; display:block; font-size:15px; line-height:1.65; color:#C9D2E0;}

/* ---------- PRICING ---------- */
.pricing-head{max-width:none; display:flex; justify-content:space-between; align-items:flex-end; gap:24px; flex-wrap:wrap;}
.plan-toggle{display:inline-flex; border:1px solid var(--line); border-radius:100px; padding:3px;}
.plan-toggle button{border:none; background:transparent; padding:8px 18px; border-radius:100px; font-size:13px; font-weight:500; color:var(--text-2);}
.plan-toggle button.active{background:var(--ink); color:var(--porcelain);}
.price-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:1px; background:var(--line); border:1px solid var(--line);}
.price-card{background:var(--porcelain); padding:34px 28px; display:flex; flex-direction:column;}
.price-card:nth-child(1){background:var(--porcelain-2);}
.price-name{font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--pulse-deep); font-weight:400;}
.price-amt{font-family:var(--serif); font-size:clamp(34px,3.6vw,44px); line-height:1; margin:18px 0 24px; font-variant-numeric:tabular-nums;}
.price-amt .cur{font-family:var(--sans); font-size:16px; color:var(--text-2); margin-right:4px; vertical-align:top;}
.price-amt .per{font-family:var(--sans); font-size:14px; color:var(--mist); margin-left:4px;}
.text1{display:none;}
.price-note{font-family:var(--serif); font-size:clamp(22px,2.4vw,28px); line-height:1.2; margin:16px 0 24px; color:var(--ink);}
.price-list{flex:1; margin-bottom:28px; border-top:1px solid var(--line); columns:2; column-gap:18px;}
.price-list li{font-size:13.5px; padding:7px 0 7px 18px; position:relative; break-inside:avoid;}
.price-list li::before{content:''; position:absolute; left:0; top:13px; width:6px; height:6px; border-radius:50%;}
.price-list li.on{color:var(--ink);}
.price-list li.on::before{background:var(--pulse);}
.price-list li.off{color:var(--mist); text-decoration:line-through; text-decoration-color:var(--line);}
.price-list li.off::before{border:1.5px solid var(--line);}

/* ---------- REGISTER ---------- */
.register-band{background:var(--porcelain-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.contact-shell{display:grid; grid-template-columns:5fr 7fr; gap:64px; align-items:start;}
@media(max-width:900px){ .contact-shell{grid-template-columns:1fr; gap:40px;} }
.register-title{font-size:clamp(28px,4vw,44px); margin-top:18px;}
.register-lede{color:var(--text-2); margin-top:16px; line-height:1.65;}
.register-steps{margin-top:36px; border-top:1px solid var(--line); counter-reset:s;}
.register-steps li{counter-increment:s; display:grid; grid-template-columns:32px 1fr; padding:18px 0; border-bottom:1px solid var(--line);}
.register-steps li::before{content:counter(s, decimal-leading-zero); font-family:var(--mono); font-size:12px; color:var(--pulse-deep); padding-top:3px; grid-row:span 2;}
.register-steps strong{font-weight:600; font-size:15px;}
.register-steps span{font-size:14px; color:var(--text-2); line-height:1.55; margin-top:4px;}
.reg-form{background:var(--porcelain); border:1px solid var(--line); padding:32px 28px;}
@media(max-width:640px){ .reg-form{padding:24px 18px;} }
.field-row{display:grid; grid-template-columns:1fr 1fr; gap:0 16px;}
@media(max-width:560px){ .field-row{grid-template-columns:1fr;} }
.field{margin-bottom:18px;}
.field label{display:block; font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-2); margin-bottom:8px;}
.field input, .field textarea, .field select{
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:8px;
  font-family:var(--sans); font-size:16px; /* 16px+ avoids iOS zoom-on-focus */
  background:#fff; color:var(--ink); transition:border-color .2s;
}
.field select{appearance:none; -webkit-appearance:none; padding-right:36px;
  background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none' stroke='%230B1220' stroke-width='1.5'%3E%3Cpath d='M2.5 4.5 6 8l3.5-3.5'/%3E%3C/svg%3E") no-repeat right 14px center;}
.field input:focus, .field textarea:focus, .field select:focus{border-color:var(--ink); outline:none;}
.field input[readonly]{background:var(--porcelain-2);}
.field textarea{resize:vertical; min-height:88px;}
.web-link{font-family:var(--mono); font-size:12px; word-break:break-all;}
.web-link:not(:empty){margin-top:8px;}
.web-link a{color:var(--pulse-deep); border-bottom:1px solid var(--pulse-dim);}
.web-link .taken{color:var(--coral);}
.consent{display:flex; gap:10px; align-items:flex-start; margin:6px 0 22px;}
.consent input{width:18px; height:18px; margin-top:2px; flex:none; accent-color:var(--ink);}
.consent label{font-size:15px; line-height:1.5; color:var(--text-2);}
.form-status{font-family:var(--mono); font-size:13px; margin-bottom:14px;}
.form-status.err{color:var(--coral);}

/* ---------- REVIEWS ---------- */
.review-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
@media(max-width:760px){ .review-grid{grid-template-columns:1fr;} }
.review-card{background:var(--porcelain); padding:34px 30px; display:flex; flex-direction:column; justify-content:space-between; gap:28px;}
.review-card blockquote{font-family:var(--serif); font-size:clamp(18px,1.9vw,21px); line-height:1.5;}
.review-card blockquote::before{content:'“'; display:block; font-size:48px; line-height:.6; color:var(--pulse); margin-bottom:10px;}
.review-card figcaption{display:flex; align-items:center; gap:12px; font-size:14px; font-weight:500;}
.review-card img{width:40px; height:40px; border-radius:50%; object-fit:cover; background:var(--porcelain-2);}

/* ---------- FAQ ---------- */
.faq-band{background:var(--porcelain-2); border-top:1px solid var(--line);}
@media(min-width:961px){ .faq-split{display:grid; grid-template-columns:5fr 7fr; gap:72px; align-items:start;} }
.faq-list{border-top:1px solid var(--line);}
.faq-list details{border-bottom:1px solid var(--line);}
.faq-list summary{list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:16px; padding:22px 0;}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary h3{font-size:clamp(19px,2.2vw,23px);}
.chev{width:34px; height:34px; flex:none; border:1px solid var(--line); border-radius:50%; display:inline-flex; align-items:center; justify-content:center; transition:transform .2s ease, border-color .2s;}
.faq-list details[open] .chev{transform:rotate(180deg);}
.faq-list summary:hover .chev{border-color:var(--ink);}
.faq-body{padding:0 50px 24px 0; color:var(--text-2); font-size:15.5px; line-height:1.7;}

/* ---------- CONTACT ---------- */
#contact .section-head .btn{margin-top:32px;}
.contact-list{border-top:1px solid var(--line-dark);}
.contact-list > div{display:grid; grid-template-columns:120px 1fr; gap:16px; padding:22px 0; border-bottom:1px solid var(--line-dark);}
.contact-list dt{font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--pulse); padding-top:4px;}
.contact-list dd{font-family:var(--serif); font-size:clamp(18px,2vw,22px); word-break:break-word;}
.contact-list a:hover{color:var(--pulse);}
@media(max-width:520px){ .contact-list > div{grid-template-columns:1fr; gap:6px;} }

/* ---------- FOOTER ---------- */
footer{background:var(--ink); color:var(--porcelain); padding:72px 0 34px; border-top:1px solid var(--line-dark);}
.footer-top{display:grid; grid-template-columns:2fr 1fr 1fr 1.4fr; gap:44px; padding-bottom:44px; border-bottom:1px solid var(--line-dark);}
@media(max-width:960px){ .footer-top{grid-template-columns:1fr 1fr; gap:36px;} }
@media(max-width:600px){ .footer-top{grid-template-columns:1fr; gap:32px;} }
.f-name{font-family:var(--serif); font-size:21px; font-weight:600; display:flex; align-items:center; gap:10px; margin-bottom:14px;}
.f-tag{font-size:14px; color:#A9B6CC; line-height:1.6; max-width:34ch;}
.f-col h4{font-family:var(--mono); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--pulse); font-weight:400; margin-bottom:16px;}
.f-col li{margin-bottom:10px;}
.f-col a{font-size:14px; color:#A9B6CC; line-height:1.5; display:inline-flex; align-items:center; gap:8px; word-break:break-all;}
.f-col a:hover, .f-col a.current{color:var(--porcelain);}
.footer-bottom{display:flex; justify-content:space-between; gap:18px; flex-wrap:wrap; padding-top:26px;}
.footer-note{font-size:12.5px; color:#8595AE;}
.footer-badges{display:flex; gap:18px; flex-wrap:wrap;}
.footer-badges span{font-family:var(--mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color:#8595AE; white-space:nowrap;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important;}
  .net-packets{display:none;}
}