:root{--color-bg:#ffffff;--color-ink:#0a0a0a;--color-accent:#ff6a00;--color-accent-hover:#ff8533;--color-on-accent:#0a0a0a;--color-muted:#6b6b6b;--color-line:#0a0a0a;--color-disabled-bg:#f3f3f3;--radius:10px;--border:2px solid var(--color-line);--header-h:68px;--gap:12px;--gutter:16px;--font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-ink);font-family:var(--font);line-height:1.5;-webkit-font-smoothing:antialiased}button{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--color-ink);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.header{position:-webkit-sticky;position:sticky;top:0;z-index:50;display:flex;gap:var(--gap);min-height:var(--header-h);padding:8px var(--gutter);background:var(--color-bg);border-bottom:var(--border)}.header,.logo{align-items:center}.logo{display:inline-flex;flex:0 0 auto;border-radius:var(--radius)}.logo img{display:block;height:40px;width:auto}.controls{gap:var(--gap);flex:1 1 auto;min-width:0;margin-left:8px}.controls,.header-right{display:flex;align-items:center}.header-right{margin-left:auto;flex:0 0 auto}.btn{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;background:var(--color-bg);border:var(--border);border-radius:var(--radius);cursor:pointer;font-weight:600;white-space:nowrap;transition:background-color .12s ease,transform .12s ease}.btn:hover:not(:disabled){background:var(--color-accent);color:var(--color-on-accent)}.btn:active:not(:disabled){transform:translateY(1px)}.btn[aria-expanded=true]{background:var(--color-accent);color:var(--color-on-accent)}.btn:disabled,.btn[aria-disabled=true]{background:var(--color-disabled-bg);color:var(--color-muted);border-color:var(--color-muted);cursor:not-allowed}.btn-primary{background:var(--color-ink);color:var(--color-bg)}.btn-primary:hover:not(:disabled){background:var(--color-accent);color:var(--color-on-accent)}.btn .value{font-weight:500;color:var(--color-muted)}.btn:hover:not(:disabled) .value,.btn[aria-expanded=true] .value{color:var(--color-on-accent)}.btn .chevron{transition:transform .15s ease}.btn[aria-expanded=true] .chevron{transform:rotate(180deg)}.badge{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:2px 6px;border-radius:999px;background:var(--color-ink);color:var(--color-bg)}.dropdown{position:relative}.panel{position:absolute;top:calc(100% + 8px);left:0;z-index:60;min-width:220px;padding:8px;background:var(--color-bg);border:var(--border);border-radius:var(--radius);box-shadow:4px 4px 0 var(--color-ink)}.panel-title{margin:4px 8px 8px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-muted)}.options{display:flex;flex-direction:column;gap:2px}.option{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;min-height:40px;padding:0 10px;background:transparent;border:2px solid transparent;border-radius:8px;cursor:pointer;text-align:left}.option:hover{background:var(--color-disabled-bg)}.option[aria-selected=true]{background:var(--color-accent);color:var(--color-on-accent);font-weight:700}.option small{color:var(--color-muted)}.option[aria-selected=true] small{color:var(--color-on-accent)}.volume{flex-direction:column;padding:4px 8px 8px}.volume,.volume-row{display:flex;gap:12px}.volume-row{align-items:center}.volume input[type=range]{flex:1 1;min-width:140px;height:28px;accent-color:var(--color-accent);cursor:pointer}.volume output{min-width:3.5ch;text-align:right;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700}.volume .btn{min-height:38px;justify-content:center}.main{max-width:960px;margin:0 auto;padding:48px var(--gutter)}.placeholder-card{padding:32px;border:var(--border);border-radius:16px;box-shadow:6px 6px 0 var(--color-accent)}.placeholder-card h1{margin:0 0 8px;font-size:clamp(1.5rem,4vw,2.25rem);line-height:1.15}.placeholder-card p{margin:0 0 16px;color:var(--color-muted)}.state{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}.state li{padding:4px 12px;border:var(--border);border-radius:999px;font-weight:600;font-size:14px}@media (max-width:960px){.btn .value{display:none}}@media (max-width:720px){.header{gap:8px}.controls{gap:6px;margin-left:0}.btn{padding:0 10px}.btn .label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.logo img{height:34px}.dropdown{position:static}.panel{left:var(--gutter);right:var(--gutter);min-width:0}}@media (max-width:480px){.logo{width:40px;overflow:hidden}.btn-login .label{position:static;width:auto;height:auto;clip:auto}}@media (prefers-reduced-motion:reduce){*{transition:none!important}}.hero{margin-bottom:28px}.hero h1{margin:0 0 8px;font-size:clamp(1.75rem,5vw,2.75rem);line-height:1.1}.hero p{margin:0;max-width:52ch;color:var(--color-muted)}.keyboard{flex-direction:column;padding:12px;border:var(--border);border-radius:16px;background:var(--color-bg);box-shadow:6px 6px 0 var(--color-ink);-moz-user-select:none;user-select:none;-webkit-user-select:none;touch-action:manipulation}.key-row,.keyboard{display:flex;gap:6px}.key{flex-basis:0;min-width:0;height:clamp(34px,6.2vw,64px);display:flex;align-items:center;justify-content:center;border:var(--border);border-radius:8px;background:var(--color-bg);box-shadow:0 3px 0 var(--color-ink);font-weight:700;font-size:clamp(10px,1.6vw,16px);cursor:pointer;transition:transform .05s ease,box-shadow .05s ease,background-color .05s ease}.key[data-pressed=true]{background:var(--color-accent);color:var(--color-on-accent);transform:translateY(3px);box-shadow:0 0 0 var(--color-ink)}@media (max-width:720px){.keyboard{padding:8px;gap:4px;box-shadow:4px 4px 0 var(--color-ink)}.key-row{gap:4px}.key{border-width:1.5px;border-radius:6px}}.skip-link{position:absolute;top:8px;left:8px;z-index:100;padding:10px 14px;background:var(--color-ink);color:var(--color-bg);border-radius:var(--radius);font-weight:700;text-decoration:none;transform:translateY(-200%)}.skip-link:focus{transform:translateY(0)}.panel .hint{margin:0;font-size:13px;color:var(--color-muted)}.btn-lang{margin-right:var(--gap);padding:0 12px;letter-spacing:.04em}main:focus{outline:none}@media (max-width:480px){.btn-lang{margin-right:6px;padding:0 8px}}