:root{--ink:#000;--ground:#fafafa;--brand:#231f20;--line:#dedede;--muted:#6b6b6b;color-scheme:light}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%;background:var(--brand)}
body{display:flex;flex-direction:column;height:100vh;height:100dvh;font:500 15px/1.4 "Libre Franklin",system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink)}
#app{flex:1;width:100%;border:0;display:block;background:var(--ground)}
.nojs{color:#fff;padding:24px}.nojs a{color:#fff}

/* install banner (top) */
.install{background:var(--ground);border-bottom:1px solid var(--line);padding:calc(10px + env(safe-area-inset-top,0px)) max(14px,env(safe-area-inset-right,0px)) 10px max(14px,env(safe-area-inset-left,0px))}
.ib-row{display:flex;align-items:center;gap:12px;max-width:640px;margin:0 auto}
.ib-row img{width:40px;height:40px;flex-shrink:0;display:block}
.ib-txt{flex:1;min-width:0}
.ib-txt b{display:block;font:800 13px/1.2 inherit;letter-spacing:.06em;text-transform:uppercase}
.ib-txt span{display:block;font-size:13px;color:var(--muted);line-height:1.3}
.ib-go{all:unset;cursor:pointer;background:var(--ink);color:#fff;font:700 12px/1 inherit;letter-spacing:.1em;text-transform:uppercase;padding:12px 14px;white-space:nowrap}
.ib-x{all:unset;cursor:pointer;font:600 22px/1 inherit;color:var(--muted);padding:4px 6px}
.ib-go:focus-visible,.ib-x:focus-visible,.ib-lang button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

/* step-by-step sheet */
.sheet{position:fixed;inset:0;z-index:10;background:rgba(0,0,0,.55);display:flex;align-items:flex-end;justify-content:center}
.sheet-in{background:var(--ground);width:100%;max-width:520px;padding:20px max(18px,env(safe-area-inset-left,0px)) calc(20px + env(safe-area-inset-bottom,0px))}
.sheet h2{margin:0 0 4px;font:800 18px/1.2 inherit;letter-spacing:.04em;text-transform:uppercase}
.sheet p{margin:0 0 14px;color:var(--muted)}
.sheet ol{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:12px}
.sheet li{display:flex;align-items:center;gap:12px;font-size:16px;line-height:1.3}
.sheet li>i{font-style:normal;flex-shrink:0;width:28px;height:28px;display:grid;place-items:center;background:var(--ink);color:#fff;font:700 13px/1 inherit}
.sheet li svg{width:22px;height:22px;vertical-align:-5px;margin:0 2px}
.sheet .ib-go{display:block;text-align:center;padding:16px}
.ib-lang{display:flex;gap:0;border:1px solid var(--line);float:right;margin:-4px 0 8px 8px}
.ib-lang button{all:unset;cursor:pointer;padding:6px 9px;font:700 12px/1 inherit;color:var(--muted)}
.ib-lang button[aria-pressed="true"]{background:var(--ink);color:#fff}
.note{font-size:13px;color:var(--muted);margin:-6px 0 14px}