:root{
  --blue:#3b82f6;--sky:#22d3ee;--green:#34d399;--dark:#edf5ff;
  --text:#edf5ff;--muted:#aabbd0;--bg:#07111f;--orange:#f59e0b
}
*{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);line-height:1.6}
a{text-decoration:none;color:inherit}
.container{max-width:1180px;margin:auto;padding:0 20px}
.nav{position:sticky;top:0;z-index:50;background:rgba(7,17,31,.94);border-bottom:1px solid #233a58;backdrop-filter:blur(12px)}
.nav-inner{max-width:1180px;margin:auto;padding:14px 20px;display:flex;justify-content:space-between;align-items:center}
.logo{display:flex;gap:10px;align-items:center;font-weight:900;font-size:22px;color:var(--blue)}
.logo-icon{width:38px;height:38px;border-radius:13px;background:linear-gradient(135deg,var(--sky),var(--blue));display:grid;place-items:center;color:white;box-shadow:0 0 24px rgba(14,165,233,.45)}
.nav-links{display:flex;gap:18px;color:var(--muted);font-size:15px}
.nav-links a:hover{color:var(--blue)}
.language-select{max-width:170px;padding:9px 10px;border:1px solid #365575;border-radius:10px;background:#101e33;color:var(--text);font-family:Arial,Helvetica,sans-serif;font-size:14px;font-weight:700;line-height:18px;letter-spacing:0;text-align:center;text-align-last:center}
.hero{position:relative;min-height:760px;display:flex;align-items:center;color:white;background:#020617;overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.75}
.hero-bg{position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,6,23,.58),rgba(2,6,23,.30),rgba(2,6,23,.06)),radial-gradient(circle at 75% 20%,rgba(34,211,238,.14),transparent 32%)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;padding:80px 0}
.badge{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:9px 15px;border-radius:999px;margin-bottom:18px;backdrop-filter:blur(12px)}
.hero h1{font-size:clamp(38px,6vw,68px);line-height:1.05;margin-bottom:18px;text-shadow:0 16px 50px rgba(0,0,0,.45)}
.hero p{font-size:20px;max-width:720px;opacity:.96}
.hero-buttons{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;padding:15px 22px;border-radius:13px;font-weight:900;transition:.2s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px);opacity:.95}
.btn-light{background:#142b4a;color:#dbeafe;border-color:#426fba}
.btn-outline{border-color:rgba(255,255,255,.55);color:white;background:rgba(255,255,255,.08)}
.btn-blue{background:var(--blue);color:white}
.phone-card{position:relative;min-width:0;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.20);backdrop-filter:blur(18px);border-radius:30px;padding:24px;box-shadow:0 30px 90px rgba(0,0,0,.35)}
.hero-install{position:absolute;right:-54px;top:50%;z-index:5;width:230px;padding:16px;transform:translateY(-50%);border:1px solid rgba(255,255,255,.3);border-radius:22px;background:linear-gradient(145deg,rgba(15,83,155,.78),rgba(15,23,42,.72));color:#fff;text-align:center;box-shadow:0 22px 55px rgba(2,6,23,.38);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.hero-install-title{display:block;margin-bottom:11px;font-size:15px;line-height:1.25;font-weight:900}
.hero-install-qr{width:212px;height:212px;margin:0 -7px 10px;padding:16px;border-radius:15px;background:#fff;box-shadow:0 8px 24px rgba(2,6,23,.2)}
.hero-install-qr img,.hero-install-qr canvas{display:block;width:180px!important;height:180px!important}
.hero-install small{display:block;margin-bottom:12px;font-size:12px;line-height:1.25;color:rgba(255,255,255,.88)}
.hero-install-button{display:block;padding:11px 12px;border:1px solid #426fba;border-radius:12px;background:#142b4a;color:#dbeafe;font-size:14px;font-weight:900;box-shadow:0 8px 20px rgba(2,6,23,.18);transition:transform .2s,box-shadow .2s}
.hero-install-button:hover{transform:translateY(-2px);box-shadow:0 12px 25px rgba(2,6,23,.24)}
.phone{background:#0f172a;border-radius:34px;padding:18px;max-width:365px;margin:auto;border:8px solid rgba(255,255,255,.18)}
.phone-screen{background:#0d1a2d;color:var(--text);border-radius:24px;padding:22px;min-height:520px}
.top-row,.mini-card{display:flex;justify-content:space-between;align-items:center}
.mini-card strong[data-i18n="informationalCalculation"]{font-size:13px;line-height:1.2;max-width:58%}
.top-row{margin-bottom:16px;color:var(--muted)}
.glucose-card,.mini-card{background:#14243b;border:1px solid #2b4768;border-radius:18px;padding:18px;margin-bottom:14px;box-shadow:0 8px 24px rgba(2,6,23,.35)}
.glucose{font-size:54px;font-weight:900;color:var(--green);line-height:1}
.section{padding:70px 0}
.section-title{text-align:center;margin-bottom:38px}
.section-title h2{font-size:clamp(30px,4vw,44px);color:var(--dark);margin-bottom:10px}
.section-title p{color:var(--muted);font-size:18px;max-width:760px;margin:auto}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card,.price-card,.app-box{background:linear-gradient(145deg,#14243b,#0e1b2d);border:1px solid #2b4768;border-radius:22px;box-shadow:0 10px 30px rgba(2,6,23,.35)}
.card{padding:26px}
.marketing-section{background:linear-gradient(180deg,#091627,#0b1d34)}
.marketing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.marketing-card{background:linear-gradient(145deg,#14243b,#0e1b2d);border:1px solid #2b4768;border-radius:22px;padding:24px;box-shadow:0 10px 30px rgba(2,6,23,.35)}
.marketing-card h3{font-size:22px;color:var(--dark);margin-bottom:10px}
.marketing-card p{color:var(--muted)}
.feature-tile{width:100%;text-align:left;font:inherit;color:inherit;cursor:pointer;transition:transform .2s,border-color .2s,box-shadow .2s}
.feature-tile:hover,.feature-tile:focus-visible{transform:translateY(-4px);border-color:#93c5fd;box-shadow:0 18px 45px rgba(37,99,235,.14);outline:none}
.feature-tile p{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.tile-more{display:inline-flex;margin-top:16px;color:var(--blue);font-weight:900;align-items:center;gap:6px}
.tile-more::after{content:'→';font-size:20px}
.marketing-summary{margin-top:20px;background:#14243b;border-left:6px solid var(--blue);border-radius:20px;padding:24px;box-shadow:0 10px 30px rgba(2,6,23,.35)}
.marketing-summary p{font-size:18px;color:var(--text);margin-bottom:12px}
.marketing-summary p:last-child{margin-bottom:0;font-weight:800;color:var(--dark)}
.marketing-summary .btn{margin-top:12px}
.feature-dialog{position:fixed;inset:0;margin:auto;width:min(760px,calc(100% - 28px));max-height:min(82vh,820px);border:1px solid #365575;border-radius:26px;padding:34px;background:#111f34;color:var(--text);box-shadow:0 35px 100px rgba(2,6,23,.62);overflow:auto}
.feature-dialog::backdrop{background:rgba(2,6,23,.68);backdrop-filter:blur(5px)}
.feature-dialog h2{font-size:clamp(26px,4vw,38px);line-height:1.15;color:var(--dark);padding-right:36px;margin-bottom:18px}
.dialog-icon{font-size:38px;margin-bottom:10px}
.dialog-copy p{font-size:17px;line-height:1.7;color:var(--muted);margin-bottom:16px;white-space:pre-line}
.dialog-copy p:last-child{margin-bottom:0}
.feature-dialog.about-dialog{width:min(1180px,calc(100% - 36px));height:min(92vh,900px);max-height:none;overflow:hidden;padding:28px 38px}
.about-dialog h2{font-size:clamp(25px,3vw,36px);margin-bottom:14px}
.about-dialog .dialog-icon{display:none}
.about-dialog .dialog-copy{column-count:3;column-gap:30px;column-rule:1px solid #e2e8f0}
.about-dialog .dialog-copy p{font-size:14px;line-height:1.42;margin:0 0 12px;break-inside:avoid}
.dialog-close{position:absolute;right:18px;top:16px;width:42px;height:42px;border:0;border-radius:50%;background:#1a3150;color:#7dd3fc;font-size:28px;line-height:1;cursor:pointer}
.dialog-close:hover{background:#24476f}
.icon{width:50px;height:50px;border-radius:15px;background:#1a3150;color:#7dd3fc;display:grid;place-items:center;font-size:24px;margin-bottom:16px}
.card h3{font-size:21px;color:var(--dark);margin-bottom:8px}
.card p{color:var(--muted)}
.app-section{background:#0b1d34}
.app-box{text-align:center;padding:28px}
.app-actions{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px;margin:0 auto 18px}
.app-actions .btn{min-width:260px;text-align:center}
.app-actions .btn-outline{border-color:#426fba;color:#93c5fd;background:#12243c}
.app-direct-link{margin:0;color:var(--muted);font-size:15px}
iframe{width:100%;height:760px;border:1px solid #365575;border-radius:18px;margin-top:22px;background:#07111f}
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{padding:30px}
.price-card.featured{border:2px solid var(--blue);transform:scale(1.02)}
.price{font-size:38px;font-weight:900;color:var(--blue);margin:12px 0}
.warning{background:#2b2113;border-left:6px solid var(--orange);border-radius:20px;padding:28px;color:#fde7b0}
.contact{background:var(--dark);color:white}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}
.contact-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:26px}
footer{background:#020617;color:#cbd5e1;text-align:center;padding:28px 20px}
footer a{color:#93c5fd;text-decoration:none;font-weight:700}footer a:hover{text-decoration:underline}
@media(max-width:900px){
  .hero{min-height:auto}.hero-grid,.contact-grid{grid-template-columns:1fr}.cards,.pricing,.marketing-grid{grid-template-columns:1fr}.nav-links{display:none}.language-select{max-width:145px}iframe{height:760px}
  .feature-dialog.about-dialog{width:calc(100% - 18px);height:94vh;padding:22px 20px}
  .about-dialog .dialog-copy{column-count:2;column-gap:18px}
  .about-dialog .dialog-copy p{font-size:11px;line-height:1.28;margin-bottom:8px}
  .hero-install{right:18px}
}
@media(max-width:600px){.hero-grid{padding:60px 16px}.hero-install{position:relative;inset:auto;width:100%;margin:0 0 16px;padding:0;transform:none;border:0;background:transparent;box-shadow:none;backdrop-filter:none}.hero-install-title,.hero-install-qr,.hero-install small{display:none}.hero-install-button{padding:13px 16px;border:0;border-radius:13px;background:#142b4a;color:#dbeafe}.phone-card{width:100%;padding:18px;overflow:hidden}.phone{width:100%}}

/* Public navigation: keep every destination reachable without page overflow. */
html,body{max-width:100%;overflow-x:clip}
.nav-inner{max-width:1440px;gap:12px;flex-wrap:wrap}
.nav-links{flex:1 1 780px;min-width:0;justify-content:center;align-items:center;flex-wrap:wrap;column-gap:10px;row-gap:8px;font-size:13px}
.nav-links .btn{padding:9px 12px;border-radius:10px}
.nav-links a{white-space:nowrap}
.language-select{flex:0 0 auto}
.hero-grid,.marketing-grid,.cards,.pricing,.contact-grid{min-width:0}

@media(max-width:1100px){
  .nav-inner{justify-content:center}
  .nav-links{order:3;flex-basis:100%;justify-content:center}
}

@media(max-width:900px){
  .nav-links{display:flex}
  .hero-install{right:18px}
}

@media(max-width:600px){
  .nav-inner{padding:10px 16px;gap:10px}
  .logo{font-size:19px}
  .logo-icon{width:34px;height:34px}
  .language-select{width:145px;max-width:calc(100vw - 190px)}
  .nav-links{flex-direction:column;align-items:stretch;gap:8px;width:100%}
  .nav-links a,.nav-links .btn{width:100%;text-align:center}
  .hero{overflow:clip}
  .hero-grid{padding-left:16px;padding-right:16px}
}

/* Header actions need solid contrast against the translucent navigation bar. */
.nav-links > a[href="/login"]{background:#1d4ed8;border-color:#1d4ed8;color:#fff;box-shadow:0 6px 16px rgba(29,78,216,.24)}
.nav-links > a[href="/register"]{background:#059669;border-color:#059669;color:#fff;box-shadow:0 6px 16px rgba(5,150,105,.22)}
.nav-links > a[href="/download"]{background:#7c3aed;border-color:#7c3aed;color:#fff;box-shadow:0 6px 16px rgba(124,58,237,.22)}
.nav-links > a[href="/login"]:hover,.nav-links > a[href="/register"]:hover,.nav-links > a[href="/download"]:hover{opacity:1;filter:brightness(.92)}
.nav-links > a[href="/login"]:focus-visible,.nav-links > a[href="/register"]:focus-visible,.nav-links > a[href="/download"]:focus-visible{outline:3px solid #0ea5e9;outline-offset:2px}