:root{
  --cream:#F9EDD5; --bg:#FFF8EC; --card:#FFFFFF; --ink:#3B2F45; --muted:#6B5C75;
  --peach:#FFB99A; --peach-ink:#7A2E12; --lilac:#CDB8F0; --mint:#BFE8D2;
  --line:#EBDDC2; --shadow:0 6px 24px rgba(120,80,60,.12);
  --r:24px;
  --head:"Quicksand","Be Vietnam Pro",system-ui,sans-serif;
  --body:"Be Vietnam Pro","Quicksand",system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#2A2233; --card:#382E44; --ink:#F7EBDD; --muted:#C9BCD3; --line:#4A3E58;
    --shadow:0 6px 24px rgba(0,0,0,.35); --peach-ink:#3B1A0C}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1rem/1.65 var(--body);overflow-x:hidden;
  background-image:radial-gradient(circle at 10% 0,rgba(205,184,240,.35),transparent 40%),radial-gradient(circle at 100% 20%,rgba(255,185,154,.3),transparent 35%);
  background-repeat:no-repeat}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-underline-offset:3px}
:focus-visible{outline:3px solid var(--lilac);outline-offset:3px;border-radius:8px}
@media (prefers-color-scheme:dark){:focus-visible{outline-color:var(--peach)}}
.skip{position:absolute;left:-999px;top:8px;background:var(--card);padding:8px 14px;border-radius:12px;z-index:10}
.skip:focus{left:16px}
html[lang=en] [lang=vi],html[lang=vi] [lang=en]{display:none}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 16px}
section.wrap{padding-top:40px;padding-bottom:8px}

.top{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 1.5rem var(--head)}
.brand img{border-radius:10px}
.lang{display:flex;background:var(--card);border:2px solid var(--line);border-radius:999px;padding:3px}
.lang button{font:600 .85rem var(--head);border:0;background:none;color:var(--ink);padding:6px 14px;border-radius:999px;cursor:pointer;min-height:36px}
.lang button[aria-pressed=true]{background:var(--peach);color:var(--peach-ink)}

h1,h2,h3{font-family:var(--head);line-height:1.15;margin:0}
h1{font-size:clamp(2.2rem,9vw,3.8rem);font-weight:700;letter-spacing:-.01em}
h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--peach) 62%);padding:0 .1em}
h2{font-size:clamp(1.6rem,6vw,2.3rem);margin-bottom:20px}
h3{font-size:1.15rem;margin-bottom:6px;display:flex;align-items:center;gap:10px}
p{margin:0 0 1em}
.pill{display:inline-block;background:var(--lilac);color:#2E2347;font:600 .85rem var(--head);padding:6px 14px;border-radius:999px;margin-bottom:16px}
.lead{font-size:1.1rem;color:var(--muted);margin:16px 0 24px}
.small{font-size:.85rem;color:var(--muted);margin-top:12px}

.hero{display:grid;gap:20px;padding-top:16px;align-items:center}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:999px;background:var(--peach);color:var(--peach-ink);
  font:700 1.05rem var(--head);text-decoration:none;box-shadow:0 5px 0 rgba(122,46,18,.25);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 0 rgba(122,46,18,.25)}
.btn:active{transform:translateY(3px);box-shadow:0 2px 0 rgba(122,46,18,.25)}
.btn.ghost{background:var(--card);color:var(--ink);border:2px solid var(--line);box-shadow:none}

.mascot{margin:0;background:var(--cream);border-radius:var(--r)}
.mascot img{width:100%;border-radius:var(--r)}
.hero-mascot{max-width:340px;margin:0 auto;border-radius:50%;box-shadow:var(--shadow);animation:bob 4s ease-in-out infinite}
.hero-mascot img{border-radius:50%}
@keyframes bob{50%{transform:translateY(-8px) rotate(-1.5deg)}}
.hero-shot img{border-radius:var(--r);box-shadow:var(--shadow)}

.grid{display:grid;gap:16px}
.card{background:var(--card);border:2px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.card p:last-child{margin-bottom:0}
.why .card:nth-child(odd){border-top:6px solid var(--peach)}
.why .card:nth-child(even){border-top:6px solid var(--lilac)}
.why .card:nth-child(5){border-top-color:var(--mint)}
.why h3{display:block}
.steps{list-style:none;padding:0;margin:0}
.step .mascot{width:140px;margin:0 auto 14px;border-radius:50%}
.step .mascot img{border-radius:50%}
.step h3{align-items:flex-start}
.n{flex:none;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--lilac);color:#2E2347;font-weight:700}
.feat{display:flex;gap:16px;align-items:center}
.feat .mascot{flex:none;width:96px;height:96px;overflow:hidden}
.feat .mascot img{height:100%;object-fit:cover}
.feat h3{display:block}
.shot{padding:12px;margin:0}
.shot img{border-radius:16px;width:100%}
.shot figcaption{font-size:.9rem;color:var(--muted);padding:10px 6px 2px}
.install{padding:20px 20px 20px 44px;margin:0 0 16px}
.install li{padding-left:6px;margin-bottom:8px}
.install li:last-child{margin:0}
.new-list{padding:20px 20px 20px 40px;margin:0}
.new-list li{margin-bottom:8px}
.new-list li:last-child{margin:0}
.note{background:color-mix(in srgb,var(--lilac) 28%,var(--card));margin:0}
.faq{display:grid;gap:12px}
details.card{padding:0}
summary{cursor:pointer;padding:16px 20px;font:700 1.05rem var(--head);list-style:none;display:flex;justify-content:space-between;gap:12px;min-height:48px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--peach)}
details[open] summary::after{content:"−"}
details p{padding:0 20px 18px;color:var(--muted)}
.foot{padding-top:48px;padding-bottom:40px;color:var(--muted);text-align:center}
.foot p{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px}
.foot img{border-radius:8px}

@media (min-width:720px){
  .wrap{padding:0 24px}
  section.wrap{padding-top:72px}
  .hero{grid-template-columns:1.15fr .85fr;gap:40px;padding-top:32px}
  .hero-mascot{max-width:none}
  .why{grid-template-columns:repeat(6,1fr)}
  .why .card{grid-column:span 2}
  .why .card:nth-child(4),.why .card:nth-child(5){grid-column:span 3}
  .steps{grid-template-columns:repeat(3,1fr)}
  .feats{grid-template-columns:1fr 1fr}
  .feat .mascot{width:120px;height:120px}
  .shots{grid-template-columns:1fr 1fr;align-items:start}
  .shots .shot:first-child{grid-column:1/-1;max-width:640px;justify-self:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.fb-wrap{display:grid;gap:20px;align-items:center;padding:28px;background:linear-gradient(135deg,color-mix(in srgb,var(--peach) 22%,var(--card)),color-mix(in srgb,var(--lilac) 28%,var(--card)))}
.fb-buddy{margin:0;justify-self:center;width:min(220px,60vw);aspect-ratio:1;border-radius:50%;overflow:hidden;background:var(--cream);box-shadow:var(--shadow);animation:bob 4s ease-in-out infinite}
.fb-buddy img{width:100%;height:100%;object-fit:cover}
.fb{display:grid;gap:12px}
.fb h2{margin:0}
.fb-sub{margin:0;color:var(--muted)}
.fb-kinds{display:flex;flex-wrap:wrap;gap:8px}
.fb-kinds button{font:600 .9rem var(--head);color:var(--ink);background:var(--card);border:2px solid var(--line);border-radius:999px;padding:6px 14px;min-height:40px;cursor:pointer;transition:transform .15s}
.fb-kinds button::before{content:"";display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:8px;vertical-align:1px;background:var(--dot)}
.fb-kinds [data-kind=idea]{--dot:#F5C451}.fb-kinds [data-kind=bug]{--dot:#8FD3B0}.fb-kinds [data-kind=love]{--dot:#F28BA8}
.fb-kinds button:hover{transform:translateY(-2px)}
.fb-kinds button[aria-checked=true]{background:var(--peach);border-color:var(--peach);color:var(--peach-ink)}
.fb-box{position:relative}
.fb textarea,.fb input{width:100%;box-sizing:border-box;font:inherit;color:var(--ink);background:var(--card);border:2px solid var(--line);border-radius:20px;padding:14px 16px;min-height:52px;transition:border-color .15s}
.fb textarea{resize:vertical;padding-bottom:28px}
.fb textarea:focus,.fb input:focus{border-color:var(--lilac);outline:none}
.fb ::placeholder{color:var(--muted);opacity:.8}
.fb-count{position:absolute;right:16px;bottom:10px;font-size:.75rem;color:var(--muted)}
.fb-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.fb .btn{border:0;cursor:pointer}
.fb .btn:disabled{opacity:.6;cursor:wait}
.fb .trap{position:absolute;left:-9999px;width:1px}
.fb-status{margin:0;color:var(--muted)}
.fb-status[data-kind=ok]{color:inherit;font-weight:600}
@media (min-width:760px){.fb-wrap{grid-template-columns:220px 1fr;gap:36px;padding:36px}}
dialog.dl{max-width:min(440px,calc(100vw - 32px));color:var(--ink);padding:24px}
dialog.dl::backdrop{background:rgba(59,47,69,.45)}
.dl-form{display:grid;gap:10px}
.dl-form h3{font-size:1.4rem}
.dl-form input{font:inherit;color:var(--ink);background:var(--bg);border:2px solid var(--line);border-radius:16px;padding:12px 14px;min-height:48px}
.dl-form .cta{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 0}
.dl-form .btn{cursor:pointer}
.dl-form .btn:not(.ghost){border:0}
.dl-status{margin:0;min-height:1.2em;color:var(--peach-ink)}
@media (prefers-color-scheme:dark){.dl-status{color:var(--peach)}}
code{font:500 .88em ui-monospace,Menlo,monospace;background:color-mix(in srgb,var(--lilac) 30%,var(--card));padding:2px 6px;border-radius:6px;overflow-wrap:anywhere}