:root{--navy:#092c54;--blue:#1267ad;--ink:#132e49;--muted:#5e7184;--line:#dce6ee}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #1786d6;outline-offset:4px}button:disabled{cursor:default;opacity:.5}.experience{max-width:1100px;margin:auto;padding:38px 34px 20px;display:grid;grid-template-columns:1.05fr 1fr;gap:26px 38px}.intro{padding-top:8px}.brand{text-decoration:none;font-size:12px;font-weight:900;letter-spacing:1.6px;color:var(--navy)}.brand span{font-weight:600;letter-spacing:1px;color:var(--muted)}.preview-label{display:flex;align-items:center;gap:7px;margin:34px 0 16px;font-size:10px;font-weight:800;letter-spacing:1.6px;color:var(--blue)}.preview-label span{width:7px;height:7px;background:#2a8b76;border-radius:50%}h1{font-size:clamp(34px,4.8vw,54px);line-height:1.06;letter-spacing:-2.2px;margin:0 0 25px;color:var(--navy);font-weight:800}.lead{font-size:19px;line-height:1.65;margin:0 0 12px;max-width:430px}.description{color:var(--muted);font-size:14px;line-height:1.75;max-width:415px;margin:0 0 24px}.actions{display:flex;gap:10px;flex-wrap:wrap}.actions button{border:1px solid var(--line);border-radius:10px;padding:13px 17px;font-size:13px;font-weight:750}.actions .primary{background:var(--navy);border-color:var(--navy);color:white;box-shadow:0 5px 15px #092c541c}.primary span{padding-left:18px}.actions .secondary{background:white;color:var(--navy)}.status{font-size:11px;line-height:1.6;color:var(--muted);min-height:20px;margin:11px 0 26px}.tips{border-top:1px solid var(--line);padding-top:22px}.tips h2{font-size:14px;margin:0 0 20px}.tip{display:flex;gap:14px;margin-bottom:18px}.number{color:var(--blue);font-size:11px;font-weight:800;letter-spacing:1px;padding-top:2px}.tip h3{font-size:13px;margin:0 0 4px}.tip p{font-size:12px;line-height:1.6;color:var(--muted);margin:0;max-width:350px}.note{background:#f2f6fa;border:1px solid #e6edf4;border-radius:12px;padding:14px 16px;margin:22px 0 18px;font-size:11px;line-height:1.7}.note b{font-size:12px}.note p{color:var(--muted);margin:4px 0 0}.collection{font-size:11px;color:var(--blue);text-underline-offset:3px}.handset-section{position:relative;display:flex;align-items:center;flex-direction:column;padding-top:2px}.halo{position:absolute;top:9%;height:70%;width:115%;background:radial-gradient(ellipse,#e4edf7 0%,#f1f6fb 35%,#fff0 70%);pointer-events:none}.phone{position:relative;width:min(100%,310px);aspect-ratio:831/1893;filter:drop-shadow(0 17px 14px #17395624);user-select:none}.shell{width:100%;height:100%;display:block;pointer-events:none}.display{position:absolute;left:21.5%;top:19.3%;width:57%;aspect-ratio:130/128;background:#142018;border-radius:3px;overflow:hidden}.display canvas{width:100%;height:100%;display:block;image-rendering:pixelated;opacity:0}.display.on canvas{opacity:1}.off-screen{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;background:linear-gradient(130deg,#17251f,#101b17);color:#87998b}.off-screen span{font-size:23px;font-weight:800;letter-spacing:1px}.off-screen small{font-size:10px;letter-spacing:3px;margin-top:5px;opacity:.7}.display.on .off-screen{display:none}.hit{position:absolute;border:0;background:transparent;border-radius:35%;padding:0;color:transparent}.hit:active,.hit.pressed{background:#2389d638;box-shadow:inset 0 0 0 2px #2392da66}.hit:focus-visible{outline-offset:0}.quick-controls{display:flex;gap:6px;position:relative;margin-top:17px}.quick-controls button{min-width:42px;height:38px;border:1px solid var(--line);border-radius:8px;background:white;color:var(--navy);font-size:11px;font-weight:750;padding:0 12px}.quick-controls button:active{background:#e8f2fb}.keyboard{position:relative;font-size:10px;line-height:1.9;text-align:center;color:var(--muted);margin-top:13px}kbd{font:inherit;border:1px solid var(--line);border-radius:3px;padding:1px 4px;background:#f8fafc}footer{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;display:flex;gap:24px;justify-content:space-between;color:var(--muted);font-size:11px;line-height:1.75}footer details{max-width:720px}summary{cursor:pointer;color:var(--ink);font-weight:650}footer a{color:var(--blue)}.footer-mark{font-size:9px;letter-spacing:1.3px;white-space:nowrap;padding-top:2px} @media(max-width:720px){.experience{padding:25px 20px;grid-template-columns:1fr;gap:20px}.intro{display:contents}.brand{grid-row:1;font-size:10px}.preview-label{grid-row:2;margin:4px 0 -8px}h1{grid-row:3;margin:0;font-size:39px;letter-spacing:-1.7px}.lead{grid-row:4;font-size:16px;margin:0;max-width:100%}.description{display:none}.actions{grid-row:5;margin-top:1px}.status{grid-row:6;margin:-10px 0 0}.handset-section{grid-row:7}.phone{width:300px;max-width:100%}.tips{grid-row:8;margin-top:2px}.note{grid-row:9;margin:0}.collection{grid-row:10}.tips h2{margin-bottom:18px}.tip p{max-width:none}footer{grid-row:11;display:block}.footer-mark{display:block;margin-top:15px}.halo{width:100%}.keyboard{font-size:11px}}@media(prefers-reduced-motion:no-preference){.actions button{transition:background .15s,transform .15s}.actions button:not(:disabled):hover{transform:translateY(-1px)}}

.tone-player{position:relative;width:100%;max-width:350px;margin:16px auto 0;padding:18px;border:1px solid var(--line);background:#f5f8fc;border-radius:13px}.tone-eyebrow{font-size:9px;letter-spacing:1.5px;font-weight:800;color:var(--blue)}.tone-player h2{font-size:21px;letter-spacing:-.5px;margin:6px 0 15px;color:var(--navy)}.tone-player label{display:block;font-size:11px;font-weight:650;margin-bottom:6px}.tone-player select{width:100%;padding:10px;background:#fff;border:1px solid #ccd9e5;border-radius:7px;color:var(--ink);font:inherit;font-size:13px}.tone-player audio{width:100%;height:40px;margin-top:12px}.tone-player p{font-size:10px;line-height:1.6;color:var(--muted);margin:9px 0 0}

.actions{flex-wrap:wrap}#sound-info{font-size:11px;line-height:1.6} @media(max-width:720px){.status-area{grid-row:6}.status-area .status{margin:0}.status-area #sound-info{margin-top:8px}}

.session-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.session-actions .status{flex-basis:100%;margin:0}.secondary:disabled{opacity:.45;cursor:not-allowed}

.session-actions button{border:1px solid var(--line);border-radius:10px;padding:13px 17px;font-size:13px;font-weight:750;background:white;color:var(--navy)}
@media(max-width:720px){.session-actions{grid-row:6;margin:0}.session-actions .status{margin:0}.status-area{grid-row:7}.handset-section{grid-row:8}.tips{grid-row:9}.note{grid-row:10}.collection{grid-row:11}}

.hit[data-key="#"]{-webkit-touch-callout:none}
[data-key] { touch-action:none; -webkit-touch-callout:none; user-select:none; }

/* Current-state audio control; retain a comfortable touch target. */
.actions{align-items:center}
.actions .sound-toggle{width:44px;height:44px;min-width:44px;flex:0 0 44px;padding:0;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);background:#f2f6fa}
.actions .sound-toggle[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:#fff}
.sound-toggle svg{display:block;pointer-events:none}
.sound-toggle .sound-waves{display:none}
.sound-toggle[aria-pressed="true"] .sound-waves{display:inline}
.sound-toggle[aria-pressed="true"] .sound-muted{display:none}

/* Safari requires the prefixed selection rule on the whole handset subtree. */
.phone,.phone *,.quick-controls,.quick-controls *{
 -webkit-user-select:none;user-select:none;-webkit-touch-callout:none;
}
.shell{-webkit-user-drag:none;user-drag:none}