@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800&display=swap");
:root{
  --bg:#ffffff;--surface:#f7f8fb;--surface-2:#fbfcfe;--ink:#1d2433;--muted:#687386;
  --line:#dfe3eb;--line-2:#eaedf2;--primary:#3347d7;--primary-2:#2739bc;--accent:#16866f;
  --shadow:0 14px 36px rgba(32,43,67,.08);--radius:18px;--radius-lg:28px;
  --container:1180px;--header-h:76px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Poppins",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.68}
html,body,button,input,textarea,select{font-family:"Poppins",Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-2)}
button,input,textarea{font:inherit}
.container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
.section{padding:92px 0;scroll-margin-top:98px}
.section--soft{background:var(--surface)}
.section--line{border-block:1px solid var(--line-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--primary)}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--primary)}
h1,h2,h3{line-height:1.16;letter-spacing:-.025em;margin:0 0 18px}
h1{font-size:clamp(2.35rem,5vw,4.45rem)}
h2{font-size:clamp(1.8rem,3.2vw,2.8rem)}
h3{font-size:1.18rem}
p{margin:0 0 18px;color:var(--muted)}
.lead{font-size:1.08rem;max-width:780px}
.section-head{max-width:760px;margin-bottom:34px}
.section-head.center{text-align:center;margin-inline:auto}
.section-head.center .lead{margin-inline:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;border-radius:12px;font-weight:700;border:1px solid transparent;transition:.2s ease}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2);color:#fff;transform:translateY(-1px)}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-secondary:hover{border-color:#bcc5d4;color:var(--primary)}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eef1ff;color:var(--primary);font-size:.77rem;font-weight:700}
.icon-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.checklist{display:grid;gap:12px;padding:0;margin:0;list-style:none}
.checklist li{display:flex;gap:11px;align-items:flex-start;color:var(--muted)}
.checklist li:before{content:"✓";display:grid;place-items:center;flex:0 0 24px;height:24px;border-radius:50%;background:#e8f5f1;color:var(--accent);font-weight:800;font-size:.8rem}
.notice{padding:18px 20px;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:14px;background:#fff}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card p:last-child{margin-bottom:0}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.meta-pill{font-size:.78rem;border:1px solid var(--line);padding:6px 10px;border-radius:999px;color:var(--muted);background:#fff}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:14px;top:14px;background:#fff;border:1px solid var(--line);padding:10px 14px;z-index:9999}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
.reveal.visible{opacity:1;transform:none}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(223,227,235,.75)}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(37,48,72,.08)}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{width:185px;height:auto}
.nav{display:flex;align-items:center;gap:6px}
.nav a{color:#475268;font-size:.88rem;font-weight:600;padding:9px 10px;border-radius:9px}
.nav a:hover,.nav a.active{background:#f0f2f7;color:var(--primary)}
.nav .nav-download{margin-left:6px;background:var(--primary);color:#fff;padding-inline:15px}
.nav .nav-download:hover{background:var(--primary-2);color:#fff}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;width:44px;height:44px;cursor:pointer}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto}

/* Hero */
.hero{padding:74px 0 58px;background:linear-gradient(180deg,#fff 0%,#f8f9fc 100%);border-bottom:1px solid var(--line-2)}
.hero-center{text-align:center;max-width:980px;margin:auto}
.hero .lead{margin:0 auto 28px;max-width:790px}
.hero .btn-row{justify-content:center}
.hero-trust{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:24px 0 36px}
.hero-visual{max-width:980px;margin:36px auto 0;border:1px solid var(--line);border-radius:26px;background:#fff;box-shadow:var(--shadow);overflow:hidden}

/* About */
.about-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:44px;align-items:center}
.about-copy{padding-right:22px}
.about-visual{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}

/* Features */
.feature-strip{display:grid;grid-template-columns:1.2fr repeat(2,1fr);gap:16px}
.feature-card{min-height:210px;position:relative;overflow:hidden}
.feature-card:first-child{grid-row:span 2;min-height:436px;background:linear-gradient(145deg,#fff,#f6f7ff)}
.feature-num{font-size:.74rem;font-weight:800;color:var(--primary);letter-spacing:.12em;margin-bottom:40px}
.feature-card:first-child .feature-num{margin-bottom:100px}
.feature-chip{position:absolute;right:18px;top:18px;width:42px;height:42px;border-radius:12px;background:#f0f2ff;display:grid;place-items:center;color:var(--primary);font-weight:800}

/* How */
.steps-band{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.step{padding:30px}
.step+.step{border-left:1px solid var(--line)}
.step span{font-size:.74rem;font-weight:800;color:var(--primary);display:block;margin-bottom:44px}

/* Compatibility */
.compat-wrap{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compat-main{background:#1f2a44;color:#fff;border-radius:var(--radius-lg);padding:34px}
.compat-main p{color:#ced5e2}
.compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.compat-cell{padding:20px;border:1px solid var(--line);border-radius:16px;background:#fff}

/* Use cases */
.usecase-row{display:flex;gap:14px;overflow:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
.usecase{min-width:280px;max-width:330px;scroll-snap-align:start}
.usecase strong{display:block;margin:22px 0 8px}

/* Install */
.install-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:40px;align-items:start}
.install-index{position:sticky;top:100px}
.install-steps{display:grid;gap:14px;counter-reset:item}
.install-step{display:grid;grid-template-columns:54px 1fr;gap:16px;align-items:start;padding:22px;border-bottom:1px solid var(--line)}
.install-step:before{counter-increment:item;content:counter(item);width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:#f0f2ff;color:var(--primary);font-weight:800}

/* Download */
.download-shell{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center;border:1px solid var(--line);border-radius:32px;padding:42px;background:#fff;box-shadow:var(--shadow)}
.download-shell img{border:1px solid var(--line);border-radius:20px}
.download-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:26px 0}
.fact{padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.fact strong{display:block;font-size:.82rem}
.fact span{font-size:.77rem;color:var(--muted)}

/* Safety */
.safety-layout{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.safety-layout .card:nth-child(2){border-top:4px solid var(--accent)}
.safety-layout .card:nth-child(3){border-top:4px solid #d38a2b}

/* Pros cons */
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.proscons>div{padding:30px;border-radius:24px;border:1px solid var(--line);background:#fff}
.proscons h3{display:flex;align-items:center;gap:10px}
.proscons ul{padding-left:20px;color:var(--muted)}

/* Release */
.release-board{display:grid;grid-template-columns:.72fr 1.28fr;gap:20px}
.release-stamp{border-radius:24px;background:#eef1ff;padding:30px;display:flex;min-height:260px;flex-direction:column;justify-content:space-between}
.release-stamp .version{font-size:2.4rem;font-weight:800;color:var(--primary)}
.release-table{border:1px solid var(--line);border-radius:24px;overflow:hidden}
.release-row{display:grid;grid-template-columns:170px 1fr;padding:16px 20px;background:#fff}
.release-row+.release-row{border-top:1px solid var(--line)}
.release-row strong{font-size:.86rem}

/* Troubleshooting */
.trouble-shell{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.trouble-item{padding:20px;border:1px dashed #ccd2dc;border-radius:16px;background:#fff}
.trouble-item b{display:block;margin-bottom:8px}

/* Guide preview */
.guide-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide-card{padding:0;overflow:hidden}
.guide-card img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:#eef1ff;border-bottom:1px solid var(--line)}
.guide-card .body{padding:22px}
.guide-card a{font-weight:700}

/* FAQ */
.faq-shell{display:grid;grid-template-columns:250px 1fr;gap:36px;align-items:start}
.faq-nav{position:sticky;top:105px;display:grid;gap:8px}
.faq-nav a{display:block;padding:12px 14px;border-radius:10px;border:1px solid var(--line);color:var(--ink);font-weight:600;background:#fff}
.faq-category+.faq-category{margin-top:44px}
.faq-category h3{margin-bottom:16px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;justify-content:space-between;gap:18px;text-align:left;padding:18px 0;border:0;background:transparent;color:var(--ink);font-weight:700;cursor:pointer}
.faq-q .faq-plus{color:var(--primary);font-size:1.2rem;transition:.2s}
.faq-q[aria-expanded="true"] .faq-plus{transform:rotate(45deg)}
.faq-a{padding:0 42px 18px 0;color:var(--muted)}
.faq-a[hidden]{display:none}

/* Interior pages */
.page-hero{padding:68px 0 46px;background:var(--surface);border-bottom:1px solid var(--line)}
.page-hero .wrap{max-width:820px}
.breadcrumbs{font-size:.82rem;color:var(--muted);margin-bottom:16px}
.content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:42px;align-items:start}
.prose{max-width:790px}
.prose h2{font-size:1.75rem;margin-top:38px}
.prose h3{font-size:1.2rem;margin-top:28px}
.prose ul,.prose ol{color:var(--muted)}
.prose li{margin:8px 0}
.prose .article-image{border:1px solid var(--line);border-radius:22px;margin:24px 0 30px}
.sidebar{position:sticky;top:100px;display:grid;gap:14px}
.sidebar .card{padding:20px}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.blog-card{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff}
.blog-card img{aspect-ratio:16/9;object-fit:cover;background:var(--surface)}
.blog-card .body{padding:20px}
.blog-card h2{font-size:1.15rem}
.blog-card .kicker{font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;color:var(--primary);font-weight:800}
.related{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.related a{border:1px solid var(--line);border-radius:12px;padding:14px;color:var(--ink);font-weight:600}
.related a:hover{border-color:#b7c0d0;color:var(--primary)}
.info-list{display:grid;gap:12px}
.info-row{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}
.contact-panel{max-width:760px;padding:34px;border:1px solid var(--line);border-radius:24px;background:#fff}
.contact-panel .email-box{margin-top:18px;padding:18px;background:var(--surface);border-radius:14px;font-weight:700;color:var(--ink)}

/* Footer */
.site-footer{background:#182033;color:#e4e8f0;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.3fr .7fr 1fr;gap:40px}
.footer-brand img{width:185px;filter:brightness(0) invert(1);opacity:.94}
.footer-brand p{color:#aeb7c7;max-width:440px;margin-top:16px}
.footer-title{font-weight:700;margin-bottom:14px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:#cbd2dd;text-decoration:none}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:20px;color:#9faabd;font-size:.84rem}
.footer-bottom a{color:#dfe5ef;text-decoration:none}
.scroll-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);box-shadow:var(--shadow);display:none;cursor:pointer;z-index:800}
.scroll-top.show{display:block}

@media (max-width: 980px){
  .menu-toggle{display:block}
  .nav{position:absolute;left:20px;right:20px;top:68px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav .nav-download{margin-left:0;text-align:center}
  .about-layout,.download-shell,.release-board,.content-wrap,.faq-shell{grid-template-columns:1fr}
  .feature-strip{grid-template-columns:1fr 1fr}
  .feature-card:first-child{grid-row:auto;grid-column:1/-1;min-height:auto}
  .feature-card:first-child .feature-num{margin-bottom:40px}
  .compat-wrap,.install-layout{grid-template-columns:1fr}
  .install-index,.sidebar,.faq-nav{position:static}
  .trouble-shell{grid-template-columns:1fr 1fr}
  .guide-preview,.blog-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width: 700px){
  :root{--header-h:68px}
  .container{width:min(100% - 28px,var(--container))}
  .section{padding:66px 0}
  .hero{padding:54px 0 42px}
  .brand img{width:160px}
  .steps-band,.feature-strip,.compat-grid,.safety-layout,.proscons,.guide-preview,.blog-grid{grid-template-columns:1fr}
  .step+.step{border-left:0;border-top:1px solid var(--line)}
  .download-shell{padding:24px;border-radius:22px}
  .download-facts{grid-template-columns:1fr}
  .trouble-shell{grid-template-columns:1fr}
  .release-row{grid-template-columns:1fr;gap:5px}
  .footer-grid{grid-template-columns:1fr}
  .info-row{grid-template-columns:1fr;gap:6px}
  .related{grid-template-columns:1fr}
}

/* Site-wide typography and web-sourced brand assets */
body,button,input,textarea,select{font-family:"Poppins",Arial,sans-serif}
.material-icons{font-family:"Material Icons"!important;font-weight:normal;font-style:normal;font-size:20px;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;word-wrap:normal;direction:ltr;-webkit-font-feature-settings:"liga";-webkit-font-smoothing:antialiased}
.btn-icon{font-size:19px;margin-right:7px}
.brand{gap:11px}
.brand .brand-mark,.footer-brand .brand-mark{width:46px;height:46px;border-radius:12px;object-fit:cover;flex:0 0 46px}
.brand-copy{display:grid;line-height:1.05;color:var(--ink)}
.brand-copy strong{font-size:1.02rem;letter-spacing:-.02em}
.brand-copy small{font-size:.68rem;color:var(--muted);margin-top:3px;text-transform:uppercase;letter-spacing:.12em}
.footer-brand a{display:inline-flex;align-items:center;gap:11px}
.footer-brand .brand-copy{color:#fff}
.footer-brand .brand-copy small{color:#aeb7c7}
.hero-visual img,.about-visual img{width:100%;aspect-ratio:16/9;object-fit:cover}
.download-logo{width:min(100%,330px)!important;aspect-ratio:1/1;object-fit:cover;margin-inline:auto;border-radius:28px!important}
@media(max-width:700px){.brand .brand-mark{width:40px;height:40px;flex-basis:40px}.brand-copy strong{font-size:.94rem}}

/* Final footer and image-quality refinements */
.brand-copy{display:flex!important;align-items:center;line-height:1;white-space:nowrap;color:var(--ink)}
.brand-copy strong{font-size:1.02rem;letter-spacing:-.02em;white-space:nowrap}
.footer-brand .brand-copy{color:#fff}
.footer-brand .brand-mark{filter:none!important;opacity:1!important;width:48px!important;height:48px!important;object-fit:cover!important;border-radius:12px}
.footer-brand>a{display:inline-flex!important;align-items:center!important;gap:11px!important;white-space:nowrap}
.footer-bottom{text-align:center!important;display:grid;gap:8px;justify-items:center}
.footer-copyright{width:100%;text-align:center}
.footer-disclaimer{width:100%;text-align:center;color:#aeb7c7;font-size:.82rem;line-height:1.55}
.hero-visual img,.about-visual img,.article-image,.blog-card img{image-rendering:auto;-ms-interpolation-mode:bicubic;backface-visibility:hidden;transform:translateZ(0)}
.hero-visual img,.about-visual img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;background:#fff}
.article-image,.blog-card img{width:100%;height:auto;object-fit:cover}
@media(max-width:700px){.brand-copy strong{font-size:.92rem}.footer-brand .brand-mark{width:44px!important;height:44px!important}.footer-disclaimer{font-size:.78rem}}

/* Web-sourced BetterF3 blog screenshots */
.blog-card img,.article-image{image-rendering:auto;object-position:center}
.blog-card img{width:100%;height:220px;object-fit:cover}
.prose .article-image{width:100%;height:auto;max-height:680px;object-fit:contain;background:#111}
@media (max-width:700px){.blog-card img{height:210px}}

/* Final brand + typography pass */
html,body,header,main,footer,nav,section,article,aside,div,p,a,span,strong,b,em,h1,h2,h3,h4,h5,h6,ul,ol,li,button,input,textarea,select,label{font-family:"Poppins",Arial,sans-serif}
.brand .brand-mark,.footer-brand .brand-mark{image-rendering:auto;object-fit:cover}
.download-visual-image{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);border-radius:20px;background:#fff}