/* VitaLink public website. Plain CSS, no JavaScript.
   Palette matches the VitaLink app: navy text, teal accents, warm off-white.
   The brand teal (#0d9488) is decorative only; text and buttons use the darker
   teals below so every pairing clears 4.5:1. */
:root{
  --ink:#1e3a5f;        /* app navy — headings */
  --text:#3b556d;
  --muted:#4f677c;
  --bg:#f7f8f5;         /* app page background */
  --tint:#e7f4f1;       /* soft teal section tint */
  --card:#ffffff;
  --line:#d7e3e0;
  --teal:#0d9488;       /* brand teal — decoration */
  --fill:#0b7f76;       /* button fill (white text 4.87:1) */
  --fill-dark:#096a63;
  --link:#0f766e;       /* teal text (5.4:1 on white) */
  --bezel:#12302d;
  --radius:20px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{margin:0;overflow-x:clip;background:var(--bg);color:var(--text);font-family:"Public Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{color:var(--ink);margin:0;font-weight:500;text-wrap:balance}
h1,h2{font-family:Newsreader,Georgia,"Times New Roman",serif;letter-spacing:-.02em}
p{margin:0}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:12px;top:-80px;background:var(--ink);color:#fff;padding:12px 18px;border-radius:10px;z-index:100;text-decoration:none;font-weight:600}
.skip:focus{top:12px}

/* header */
.site-header{max-width:1200px;margin:0 auto;padding:18px 24px;display:flex;align-items:center;gap:28px;position:relative;z-index:5}
.brand{display:inline-flex;flex-shrink:0}
.site-header nav{display:flex;gap:26px;margin-inline-start:auto;font-size:15px;font-weight:500}
.site-header nav a{text-decoration:none;color:var(--ink);padding:8px 2px;border-bottom:2px solid transparent}
.site-header nav a:hover{border-bottom-color:var(--teal)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 26px;border-radius:999px;font-weight:600;font-size:16px;text-decoration:none;border:2px solid var(--fill);transition:background .18s,color .18s}
.btn-solid{background:var(--fill);color:#fff}
.btn-solid:hover{background:var(--fill-dark);border-color:var(--fill-dark)}
.btn-outline{background:transparent;color:var(--link);border-color:var(--fill)}
.btn-outline:hover{background:var(--fill);color:#fff}
.btn-lg{min-height:56px;padding:15px 36px;font-size:18px}
.link-arrow{font-weight:600;color:var(--link);text-decoration:none;padding:10px 4px}
.link-arrow::after{content:" ↓"}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* phone frames (real app screenshots, shown with sample data) */
.device{margin:0;background:var(--bezel);border-radius:40px;padding:8px;box-shadow:0 26px 60px rgba(18,48,45,.22),0 4px 14px rgba(18,48,45,.12);width:100%;max-width:300px}
.device img{border-radius:32px;width:100%;aspect-ratio:390/844;object-fit:cover;background:#fff}
.device figcaption{padding:12px 6px 6px;color:#e8f3f1;font-size:13px;text-align:center;line-height:1.35}
.shots-note{text-align:center;font-size:13px;color:var(--muted);padding:0 24px 36px}

/* hero */
.hero{position:relative;isolation:isolate;overflow:hidden;background:
  radial-gradient(900px 480px at 82% 30%,rgba(13,148,136,.16),transparent 70%),
  linear-gradient(180deg,#eef6f3 0%,var(--bg) 100%)}
.hero-inner{max-width:1200px;margin:0 auto;padding:44px 24px 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--link);margin-bottom:18px}
h1{font-size:clamp(52px,6.6vw,88px);line-height:.98;margin-bottom:26px}
h1 em{font-style:italic;color:var(--link);font-weight:400}
.lede{font-size:20px;line-height:1.6;max-width:540px}
.actions{display:flex;flex-wrap:wrap;gap:22px;align-items:center;margin-top:34px}
.hero-points{list-style:none;padding:0;margin:34px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:15px;color:var(--muted)}
.hero-points li{display:flex;align-items:center;gap:9px}
.hero-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--teal);flex-shrink:0}
.hero-phones{position:relative;height:640px;display:flex;justify-content:center}
.hero-phones .device{position:absolute;width:290px}
.device-back{left:2%;top:46px;transform:rotate(-5deg);opacity:.96}
.device-front{right:2%;top:0;z-index:2;transform:rotate(3deg)}

/* sections */
.section{padding:96px 0}
.section-tint{background:var(--tint)}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.section-head{max-width:640px;margin-bottom:48px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head h2{font-size:clamp(34px,4.2vw,54px);line-height:1.08;margin-bottom:20px}
.section-head p:not(.eyebrow){font-size:18px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card h3{line-height:1.3;font-size:20px;font-weight:600;margin:0 0 10px;letter-spacing:-.01em}
.card p{font-size:16px;line-height:1.65}
.card-plain{background:rgba(255,255,255,.78)}
.also-grid{margin-top:84px}

/* tour rows */
.tour-row{display:grid;grid-template-columns:1fr 340px;gap:80px;align-items:center;margin-top:64px}
.tour-row .device{justify-self:center}
.tour-flip{grid-template-columns:340px 1fr}
.tour-flip .device{order:-1}
.tour-copy h3{font-size:clamp(28px,3vw,38px);font-family:Newsreader,Georgia,serif;letter-spacing:-.02em;line-height:1.12;margin-bottom:16px}
.tour-copy>p:not(.eyebrow){font-size:18px;max-width:520px}
.ticks{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:10px;font-size:16px}
.ticks li{display:flex;gap:12px;align-items:flex-start}
.ticks li::before{content:"";width:20px;height:20px;border-radius:50%;background:var(--fill) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='m5.5 10.5 3 3 6-6.5' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/20px no-repeat;flex-shrink:0;margin-top:3px}

/* discharge */
.steps{list-style:none;margin:0 auto;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1100px}
.steps li{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.step-n{width:44px;height:44px;border-radius:50%;background:var(--fill);color:#fff;font-weight:700;display:grid;place-items:center;flex-shrink:0;font-size:18px}
.steps h3{font-size:20px;font-weight:600;margin-bottom:8px}
.steps p{font-size:16px}
.phone-row{display:flex;justify-content:center;gap:34px;margin-top:64px;flex-wrap:wrap}
.phone-row .device{max-width:290px}

/* everyone */
.everyone{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.lead-sm{font-size:18px;margin-bottom:28px;max-width:600px}
.langs{list-style:none;padding:0;margin:0 0 32px;display:flex;flex-wrap:wrap;gap:9px}
.langs li{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:15px;color:var(--ink);font-weight:500}
.mini-cards{display:grid;gap:14px}
.mini-cards .card{padding:20px 24px}
.mini-cards .card h3{font-size:18px;margin-bottom:6px}
.mini-cards .card p{font-size:15px}
.everyone-phones{display:flex;justify-content:center;gap:0;position:relative;min-height:600px}
.everyone-phones .device{width:210px;position:absolute}
.everyone-phones .device:nth-child(1){left:0;top:70px;transform:rotate(-4deg)}
.everyone-phones .device:nth-child(2){left:50%;transform:translateX(-50%);top:0;z-index:2}
.everyone-phones .device:nth-child(3){right:0;top:70px;transform:rotate(4deg)}

/* faq */
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px}
.faq .section-head{margin-bottom:0}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{cursor:pointer;padding:22px 36px 22px 0;font-weight:600;color:var(--ink);font-size:18px;list-style:none;position:relative;line-height:1.4}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;inset-inline-end:4px;top:50%;transform:translateY(-50%);font-size:26px;font-weight:400;color:var(--link)}
.faq-list details[open] summary::after{content:"–"}
.faq-list details p{padding:0 0 24px;font-size:16px;max-width:620px}

/* closing + footer */
.closing{text-align:center;padding:96px 24px;background:linear-gradient(180deg,var(--bg),var(--tint))}
.closing h2{font-size:clamp(36px,5vw,64px);line-height:1.05;margin-bottom:16px}
.closing p{font-size:19px;margin-bottom:30px}
.site-footer{max-width:1200px;margin:0 auto;padding:44px 24px 56px;border-top:1px solid var(--line)}
.foot-main{display:flex;flex-wrap:wrap;align-items:center;gap:20px 36px}
.foot-main p{flex:1;color:var(--muted)}
.foot-main a:not(.brand){color:var(--link);font-weight:600;text-underline-offset:4px}
.disclaimer{margin-top:28px;font-size:14px;color:var(--muted);max-width:760px}
.copy{margin-top:14px;font-size:13px;color:var(--muted)}

/* responsive */
@media (max-width:1000px){
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:20px;padding:36px 24px 24px}
  .hero-phones{height:600px;max-width:520px;margin:0 auto;width:100%}
  .tour-row,.tour-flip{grid-template-columns:minmax(0,1fr);gap:36px;margin-top:56px}
  .tour-flip .device{order:0}
  .tour-row .device{order:2}
  .steps{grid-template-columns:minmax(0,1fr)}
  .grid,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .everyone,.faq{grid-template-columns:minmax(0,1fr);gap:44px}
  .section{padding:72px 0}
}
@media (max-width:680px){
  body{font-size:16px}
  .site-header{flex-wrap:wrap;gap:10px 16px;padding:14px 20px}
  .site-header nav{order:3;flex-basis:100%;margin:0;gap:4px 18px;flex-wrap:wrap;font-size:14px}
  .site-header .btn{margin-inline-start:auto;min-height:44px;padding:9px 20px;font-size:15px}
  .brand img{width:118px;height:auto}
  .lede{font-size:18px}
  .hero-phones{height:520px}
  .hero-phones .device{width:230px}
  .grid,.grid-4{grid-template-columns:minmax(0,1fr)}
  .wrap,.hero-inner{padding-inline:20px}
  .card{padding:24px}
  .phone-row{gap:24px}
  .everyone-phones{min-height:460px}
  .everyone-phones .device{width:150px;padding:6px;border-radius:30px}
  .everyone-phones .device img{border-radius:24px}
  .everyone-phones .device figcaption{display:none}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}