/* aabrowser.org — "Dashboard" template
   Professional light theme: white and off-white, navy and sky blue from the AABrowser logo.
   Hero inside a large card, a parked-use notice, a file-style download bar,
   section headers with the title and intro side by side, and a vertical setup timeline. */
:root{
  --bg:#ffffff; --off:#f6f8fb; --tint:#edf3f9; --line:#e1e7ef;
  --ink:#0f1f33; --muted:#4f5e72;
  --navy:#0d4a86;      /* buttons, links */
  --navy-deep:#002c5d; /* logo magnifier */
  --sky:#3c8fc5;       /* logo globe, accents */
  --sky-soft:#e8f2fa;
  --amber:#a15c00; --amber-soft:#fff4e0;
  --r-xl:24px; --r-lg:16px; --r-md:12px; --r-sm:8px;
  --wrap:1180px;
  --font-display:"Lexend",system-ui,sans-serif;
  --font-text:"Source Sans 3",system-ui,-apple-system,"Segoe UI",sans-serif;
  --shadow:0 1px 2px rgba(15,31,51,.05),0 14px 34px -22px rgba(15,31,51,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-text);font-size:1.08rem;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy);text-underline-offset:3px}
a:hover{color:var(--navy-deep)}
:focus-visible{outline:2px solid var(--navy);outline-offset:3px;border-radius:4px}
h1,h2,h3{font-family:var(--font-display);line-height:1.2;margin:0 0 .5em;font-weight:600;letter-spacing:-.015em;color:var(--ink)}
h1{font-size:clamp(2rem,3.8vw,2.9rem);font-weight:700;letter-spacing:-.025em}
h2{font-size:clamp(1.55rem,2.6vw,2.05rem)}
h3{font-size:1.12rem}
p{margin:0 0 1.1em}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 14px;z-index:100}
.skip:focus{left:12px;top:12px}

/* ---------- Header ---------- */
.bar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
.bar-row{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--font-display);font-weight:700;font-size:1.24rem;letter-spacing:-.02em}
.brand img{width:42px;height:42px}
.brand:hover{color:var(--ink)}
.nav ul{list-style:none;margin:0;padding:0;display:flex;align-items:center}
.nav li + li:not(.nav-dl){border-left:1px solid var(--line)}
.nav a{display:block;padding:4px 14px;color:var(--muted);text-decoration:none;font-size:.98rem;font-weight:600}
.nav a:hover{color:var(--navy)}
.nav a[aria-current="page"]{color:var(--navy);text-decoration:underline;text-decoration-color:var(--sky);text-decoration-thickness:3px;text-underline-offset:10px}
.nav .nav-dl a{margin-left:16px;padding:9px 18px;border:2px solid var(--navy);border-radius:999px;color:var(--navy)}
.nav .nav-dl a:hover{background:var(--navy);color:#fff}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);color:var(--ink);border-radius:var(--r-sm);width:44px;height:40px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;margin:4px auto}
@media (max-width:1040px){
  .nav-toggle{display:block}
  .nav{position:absolute;left:0;right:0;top:72px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .nav.open{display:block}
  .nav ul{flex-direction:column;align-items:stretch;padding:8px 24px 18px}
  .nav li + li:not(.nav-dl){border-left:0;border-top:1px solid var(--line)}
  .nav a{padding:12px 4px}
  .nav .nav-dl a{margin:10px 0 0;text-align:center}
}

/* ---------- Hero: copy and picture inside one large card ---------- */
.hero{padding:36px 0 30px;background:linear-gradient(180deg,var(--sky-soft) 0%,var(--off) 100%)}
.hero-card{display:grid;grid-template-columns:1.08fr .92fr;background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;box-shadow:0 30px 60px -36px rgba(13,74,134,.45)}
.hero-copy{padding:52px 48px 46px;display:flex;flex-direction:column;justify-content:center}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;align-self:flex-start;margin:0 0 20px;padding:6px 14px 6px 8px;border-radius:999px;background:var(--sky-soft);color:var(--navy);font-weight:700;font-size:.92rem}
.hero-kicker img{width:28px;height:28px}
.hero h1{font-size:clamp(2rem,3.4vw,2.7rem);line-height:1.15;margin-bottom:.5em}
.hero .lead{color:var(--muted);font-size:1.12rem;margin-bottom:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{list-style:none;display:flex;flex-wrap:wrap;gap:0;margin:30px 0 0;padding:18px 0 0;border-top:1px solid var(--line)}
.hero-facts li{padding:0 26px 0 0;margin-right:26px;border-right:1px solid var(--line);line-height:1.3}
.hero-facts li:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-facts strong{display:block;font-family:var(--font-display);font-weight:600;font-size:1.08rem;color:var(--ink)}
.hero-facts span{font-size:.86rem;color:var(--muted)}
.hero-pic{position:relative;background:#0f1a2a;min-height:100%}
.hero-pic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 45%}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 24px;border-radius:999px;font-weight:700;font-size:1.02rem;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:var(--font-text);line-height:1.2}
.btn svg{width:19px;height:19px}
.btn-primary{background:var(--navy);color:#fff}
.btn-primary:hover{background:var(--navy-deep);color:#fff}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--navy);color:var(--navy)}
.drive-note{display:flex;align-items:center;gap:12px;margin:18px 0 0;padding:14px 18px;border-radius:var(--r-md);background:var(--amber-soft);border:1px solid #f2d39a;color:#5b3b00}
.drive-note svg{width:22px;height:22px;flex:none;color:var(--amber)}
@media (max-width:920px){.hero-card{grid-template-columns:1fr}.hero-copy{padding:32px 24px}.hero-pic{min-height:0}.hero-pic img{position:static;aspect-ratio:4/3;object-position:center 45%}}
@media (max-width:480px){.hero-facts li{padding-right:14px;margin-right:14px}}

/* ---------- Download bar ---------- */
.dl{padding:52px 0}
.dl-bar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px;padding:26px 30px;border:1px solid var(--line);border-left:6px solid var(--sky);border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow)}
.dl-logo{width:88px;height:88px}
.dl-info h2{margin-bottom:.4em}
.dl-specs{display:flex;flex-wrap:wrap;gap:8px 28px;margin:0}
.dl-specs dt{font-size:.82rem;color:var(--muted)}
.dl-specs dd{margin:0;font-weight:700;font-family:var(--font-display);font-size:.98rem}
.dl-action{display:grid;justify-items:end;gap:8px;text-align:right}
.dl-action p{margin:0;font-size:.88rem;color:var(--muted);max-width:30ch}
.btn-big{padding:16px 30px;font-size:1.08rem}
@media (max-width:860px){.dl-bar{grid-template-columns:1fr;border-left-width:1px;border-top:6px solid var(--sky)}.dl-action{justify-items:start;text-align:left}}

/* ---------- Section shell: title and intro side by side ---------- */
.sec{padding:80px 0;border-top:1px solid var(--line)}
.sec--tint{background:var(--off)}
.sec-top{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:end;margin-bottom:40px;padding-bottom:24px;border-bottom:2px solid var(--line)}
.sec-top h2{margin:0}
.sec-top p{margin:0;color:var(--muted);font-size:1.06rem}
.note{margin:28px 0 0;color:var(--muted)}
@media (max-width:860px){.sec-top{grid-template-columns:1fr;gap:12px}}

/* features: 4 columns, quiet */
.feat4{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:30px 26px}
.feat4 svg{width:40px;height:40px;color:var(--sky);margin-bottom:12px}
.feat4 h3{font-size:1.05rem;margin-bottom:.3em}
.feat4 p{margin:0;color:var(--muted);font-size:.98rem}
@media (max-width:980px){.feat4{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.feat4{grid-template-columns:1fr}}

/* setup: vertical timeline + side box */
.setup{display:grid;grid-template-columns:1.4fr .9fr;gap:40px;align-items:start}
.timeline{list-style:none;margin:0;padding:0 0 0 8px;counter-reset:t}
.timeline li{position:relative;padding:0 0 26px 50px;border-left:2px solid #c7d8ea}
.timeline li:last-child{border-left-color:transparent;padding-bottom:0}
.timeline li::before{counter-increment:t;content:counter(t);position:absolute;left:-18px;top:-2px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#fff;border:2px solid var(--navy);color:var(--navy);font-family:var(--font-display);font-weight:700;font-size:.95rem}
.timeline h3{margin-bottom:.2em}
.timeline p{margin:0;color:var(--muted)}
.setup-side{padding:24px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff}
.setup-side p{margin:16px 0 0;color:var(--muted);font-size:.98rem}
.mini-checks{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.mini-checks li{display:grid;grid-template-columns:22px 1fr;gap:10px;color:var(--muted)}
.mini-checks svg{width:20px;height:20px;color:var(--sky);margin-top:3px}
@media (max-width:900px){.setup{grid-template-columns:1fr}}

/* tables */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;margin:0 0 1.2em}
table{width:100%;border-collapse:collapse;min-width:560px;font-size:.98rem}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:var(--font-display);font-weight:600;background:var(--sky-soft);color:var(--navy-deep)}
tr:last-child td{border-bottom:0}
td{color:var(--muted)}
td:first-child{color:var(--ink);font-weight:700}

/* picture + text */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.duo-pic img{border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--shadow);aspect-ratio:16/10;object-fit:cover;width:100%}
.duo h3{margin-top:0}
.duo p{color:var(--muted)}
.duo--text > div{padding:26px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff}
@media (max-width:860px){.duo{grid-template-columns:1fr}}

/* use cases */
.uses{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.use{padding:26px;border-radius:var(--r-lg);background:linear-gradient(180deg,var(--sky-soft),#fff 70%);border:1px solid #d3e4f3}
.use p{margin:0;color:var(--muted)}
@media (max-width:860px){.uses{grid-template-columns:1fr}}

/* safety do / don't */
.safe-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.safe-grid ul{list-style:none;margin:0;padding:22px 24px;border-radius:var(--r-lg);border:1px solid var(--line);background:#fff;display:grid;gap:12px}
.safe-grid .head{font-family:var(--font-display);font-weight:600;font-size:1.12rem;color:var(--ink)}
.safe-grid li:not(.head){display:grid;grid-template-columns:22px 1fr;gap:10px;color:var(--muted)}
.safe-grid svg{width:20px;height:20px;margin-top:3px}
.do{border-top:4px solid #1d8a52!important}
.do svg{color:#1d8a52}
.dont{border-top:4px solid var(--amber)!important}
.dont svg{color:var(--amber)}
@media (max-width:760px){.safe-grid{grid-template-columns:1fr}}

/* article tiles */
.tiles3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tiles2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.tile{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;overflow:hidden;box-shadow:var(--shadow)}
.tiles2 .tile{flex-direction:row}
.tiles2 .tile-img{flex:0 0 42%}
.tiles2 .tile-img img{height:100%;aspect-ratio:auto}
.tile-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.tile-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.tile-meta{font-size:.86rem;color:var(--sky);font-weight:700;margin-bottom:6px}
.tile h3{font-size:1.1rem;margin-bottom:.4em}
.tile h3 a{color:var(--ink);text-decoration:none}
.tile h3 a:hover{color:var(--navy)}
.tile p{color:var(--muted);font-size:.98rem}
.read-more{margin-top:auto;align-self:flex-start;font-weight:700;color:var(--navy);text-decoration:none;border-bottom:2px solid var(--sky);padding-bottom:2px}
.read-more:hover{color:var(--navy-deep)}
@media (max-width:980px){.tiles3{grid-template-columns:1fr 1fr}.tiles2{grid-template-columns:1fr}}
@media (max-width:640px){.tiles3{grid-template-columns:1fr}.tiles2 .tile{flex-direction:column}.tiles2 .tile-img img{aspect-ratio:16/9}}

/* FAQ */
.faq-list{width:100%;border-top:2px solid var(--ink)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{margin:0;font-size:inherit}
.faq-q button{all:unset;box-sizing:border-box;width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 6px;cursor:pointer;font-family:var(--font-display);font-weight:600;font-size:1.06rem;color:var(--ink)}
.faq-q button:hover{color:var(--navy)}
.faq-q button:focus-visible{outline:2px solid var(--navy);outline-offset:2px}
.faq-q .sign{flex:none;width:30px;height:30px;border-radius:50%;border:2px solid var(--line);position:relative;transition:transform .2s,border-color .2s}
.faq-q .sign::before{content:"";position:absolute;left:50%;top:44%;width:8px;height:8px;border-right:2px solid var(--navy);border-bottom:2px solid var(--navy);transform:translate(-50%,-50%) rotate(45deg)}
.faq-q button[aria-expanded="true"] .sign{transform:rotate(180deg);border-color:var(--sky)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s ease}
.faq-a > div{overflow:hidden}
.faq-a p{margin:0;padding:0 6px 22px;color:var(--muted)}
.faq-item.open .faq-a{grid-template-rows:1fr}

/* ---------- Inner pages ---------- */
.page-head{padding:44px 0 36px;background:var(--off);border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(1.85rem,3.4vw,2.6rem);max-width:900px;margin-bottom:.35em}
.page-head p{color:var(--muted);font-size:1.08rem;margin:0;max-width:800px}
.crumbs{font-size:.92rem;margin-bottom:14px}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:#a5b1c1}
.crumbs li{color:var(--muted)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--navy)}
.page-main{padding:40px 0 80px}
.glance{display:grid;grid-template-columns:repeat(4,1fr) auto;align-items:center;gap:0;margin-bottom:36px;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow);overflow:hidden}
.glance div{padding:16px 20px;border-right:1px solid var(--line)}
.glance span{display:block;font-size:.82rem;color:var(--muted)}
.glance strong{font-family:var(--font-display);font-weight:600;font-size:.98rem}
.glance .btn{margin:0 18px}
@media (max-width:900px){.glance{grid-template-columns:1fr 1fr}.glance div{border-bottom:1px solid var(--line)}.glance .btn{grid-column:1/-1;margin:16px}}
.article .cover{border-radius:var(--r-lg);border:1px solid var(--line);margin:0 0 28px;aspect-ratio:16/9;object-fit:cover;width:100%}
.article h2{font-size:1.45rem;margin-top:1.6em}
.article ul,.article ol{padding-left:1.25em;margin:0 0 1.2em}
.article li{margin-bottom:.45em}
.article li::marker{color:var(--sky)}
.callout{border:1px solid #f2d39a;background:var(--amber-soft);color:#4d3300;padding:16px 20px;border-radius:var(--r-md);margin:26px 0}
.related{margin-top:56px;padding-top:36px;border-top:2px solid var(--line)}
.related h2{margin-bottom:22px}
.prose h2{font-size:1.32rem;margin-top:1.5em}
.prose ul{padding-left:1.2em}
.contact-card{margin-top:24px;padding:26px 28px;border:1px solid var(--line);border-left:6px solid var(--sky);border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow)}
.contact-label{margin:0 0 4px;font-weight:700;color:var(--navy)}
.contact-email{margin:0 0 10px;font-family:var(--font-display);font-size:clamp(1.25rem,3vw,1.75rem);font-weight:600;color:var(--ink);word-break:break-all;user-select:all}

/* ---------- Footer ---------- */
.foot{background:var(--off);border-top:1px solid var(--line);color:var(--muted)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:56px 24px 44px}
.foot-about p{margin-top:16px;max-width:40ch}
.foot h3{font-size:1rem;margin:6px 0 16px}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin-bottom:10px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--navy)}
.foot .brand{color:var(--ink)}
.foot-bottom{border-top:1px solid var(--line)}
.foot-bottom-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px 30px;padding:18px 24px 22px;font-size:.94rem}
.foot-bottom p{margin:0}
.foot-bottom a{color:var(--navy);font-weight:700}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}.foot-about{grid-column:1/-1}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
@media (max-width:760px){.foot-bottom-row{padding-right:76px}}

/* ---------- Back to top ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:50px;height:50px;border-radius:50%;border:2px solid #fff;background:var(--sky);color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 10px 24px -8px rgba(13,74,134,.6);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .2s,transform .2s,visibility .2s;z-index:60}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--navy)}
.to-top svg{width:24px;height:24px}
@media (max-width:480px){.hero-kicker{font-size:.8rem;padding:5px 12px 5px 6px}.hero-kicker img{width:22px;height:22px}.hero-actions .btn{flex:1 1 100%}}