:root{
  --bg:#ffffff; --text:#111114; --dim:#8e8e93; --faint:#c7c7cc; --line:#e5e5ea; --tap:#ececef;
  --green:#4fae63; --green-d:#3f9a53; --blue:#0a7aff;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none!important}
html,body{margin:0;height:100%;background:var(--bg)}
body{font:16px/1.4 -apple-system,"SF Pro Text",system-ui,Roboto,"Segoe UI",sans-serif;color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
button,select,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}

.app{position:relative;max-width:440px;margin:0 auto;height:100dvh;min-height:580px;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top)}

/* Layout follows a native dialer: key centres at 21.6% / 50% / 78.2% across, rows from 37.2% down, 10% pitch, action at about 83.5% */
.stage{flex:0 0 37.2%;display:flex;flex-direction:column;align-items:center;justify-content:space-evenly;padding:0 16px;min-height:0}
.logo{display:block;height:auto;width:clamp(105px,35vw,133px)}
.num{width:100%;height:56px;line-height:56px;text-align:center;font-size:clamp(40px,6.4dvh,50px);font-weight:300;letter-spacing:.5px;padding:0 8px;white-space:nowrap;overflow:hidden;font-variant-numeric:tabular-nums}
.num.empty{font-size:28px;color:var(--faint)}

.meta{display:flex;flex-direction:column;align-items:center;gap:0;width:100%}
.link{position:relative;color:var(--blue);padding:6px 12px;border-radius:10px}
.link select{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer;font-size:16px}
.cc{font-size:13px;padding:4px 10px}
.msgbtn{font-size:17px;max-width:80%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.msgbtn.set{color:var(--text);background:#f2f2f7}
.msg{display:block;margin:2px auto 0;width:min(340px,92%);border:0;border-radius:14px;background:#f2f2f7;padding:9px 14px;font-size:16px;line-height:1.35;resize:none;outline:none}
.msg:focus{box-shadow:0 0 0 2px rgba(10,122,255,.35)}

.pad{flex:0 0 40%;width:85.05%;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(4,1fr)}
.pad button{position:relative;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text)}
.pad button::before{content:"";position:absolute;left:50%;top:50%;height:min(100%,84px);aspect-ratio:1/1;transform:translate(-50%,-50%);border-radius:50%;background:var(--tap);opacity:0;transition:opacity .25s}
.pad button:active::before{opacity:1;transition:none}
.pad b{position:relative;font-size:clamp(30px,min(9.4vw,5.2dvh),42px);font-weight:300;line-height:1}
.pad i{position:relative;font-style:normal;font-size:12px;letter-spacing:.6px;color:var(--dim);line-height:14px;height:14px;margin-top:1px}
.pad svg{position:relative;width:30px;height:26px}
.pad .dim{color:var(--faint)}
.pad .dim:active{color:var(--text)}

.go-wrap{flex:1 1 auto;display:flex;justify-content:center;align-items:flex-start;padding-top:max(6px,calc(6.3dvh - 30px))}
.go{width:min(300px,78vw);height:60px;border-radius:30px;background:var(--green);color:#fff;font-size:19px;font-weight:600;letter-spacing:.1px;transition:opacity .15s,background .15s,transform .1s}
.go.off{opacity:.4}
.go:not(.off):active{background:var(--green-d);transform:scale(.985)}

.tabs{display:flex;justify-content:space-around;padding:8px 24px calc(8px + env(safe-area-inset-bottom));border-top:.5px solid var(--line);background:#fafafa}
.tabs > *{position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;min-width:80px;color:var(--dim);font-size:12px;text-decoration:none;padding:4px 0;border-radius:10px}
.tabs svg{width:28px;height:28px}
.tabs > *:active{color:var(--text)}

[data-tip]{position:relative}
@media (hover:hover){
  [data-tip]:hover::after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 6px);transform:translateX(-50%);background:#1c1c1e;color:#fff;font-size:12px;line-height:1.35;padding:7px 10px;border-radius:8px;width:max-content;max-width:220px;text-align:center;z-index:5;pointer-events:none;font-weight:400;letter-spacing:0;white-space:normal}
}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

.toast{position:fixed;left:50%;bottom:calc(96px + env(safe-area-inset-bottom));transform:translateX(-50%);background:#1c1c1e;color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;z-index:20;max-width:86vw;text-align:center}
.sheet-bg{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:29}
.sheet{position:fixed;left:0;right:0;bottom:0;max-width:440px;margin:0 auto;background:#fff;color:var(--text);border-radius:22px 22px 0 0;padding:8px 20px calc(16px + env(safe-area-inset-bottom));z-index:30;box-shadow:0 -8px 30px rgba(0,0,0,.15)}
.sheet .grab{width:36px;height:5px;border-radius:3px;background:#d1d1d6;margin:0 auto 10px}
.sheet h2{margin:0 0 6px;font-size:18px;font-weight:600;text-align:center}
.sheet .row{display:flex;align-items:center;gap:14px;width:100%;text-align:left;font-size:17px;padding:13px 4px;border-bottom:.5px solid var(--line)}
.sheet .row:active{background:#f2f2f7}
.sheet .ico{flex:0 0 36px;height:36px;border-radius:10px;background:#f2f2f7;color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:16px}
.sheet .ico svg{width:22px;height:22px}
.sheet ol{list-style:none;margin:8px 0 0;padding:0}
.sheet li{display:flex;align-items:center;gap:14px;padding:11px 4px;font-size:16px;line-height:1.35}
.sheet p{margin:8px 0;font-size:15px;color:var(--dim);text-align:center}
.sheet .close{display:block;width:100%;margin-top:12px;height:50px;border-radius:14px;background:#f2f2f7;color:var(--blue);font-size:17px;font-weight:600}

@media (min-width:600px){
  html,body{background:#f4f4f6}
  .app{background:#fff;margin-top:24px;height:calc(100dvh - 48px);border-radius:36px;box-shadow:0 0 0 1px var(--line);overflow:hidden}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}