:root{color-scheme:dark;--ink:#f2f1ed;--muted:#98a0a9;--night:#080d13;--blue:#213448;--line:rgba(232,238,246,.14);--serif:'GFS Didot','Didot','Bodoni 72',Georgia,serif;--sans:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:#06090d;color:var(--ink);font-family:var(--sans);-webkit-tap-highlight-color:transparent}body{min-height:100svh}button,input{font:inherit}button{color:inherit;cursor:pointer}button:focus-visible,input:focus-visible{outline:2px solid #b2c8dc;outline-offset:4px}.shell{position:relative;isolation:isolate;width:min(100%,460px);min-height:100svh;margin:0 auto;background:var(--night);overflow:hidden;box-shadow:0 0 90px #0008}.screen{position:relative;min-height:100svh;padding-bottom:calc(78px + env(safe-area-inset-bottom))}.screen[hidden]{display:none}
.login{display:grid;min-height:100svh;place-items:center;padding:42px 28px 32px;overflow:hidden}.login-art{position:absolute;z-index:-1;inset:0;background:radial-gradient(ellipse at 52% 25%,rgba(38,57,73,.7),transparent 47%),linear-gradient(180deg,#0a1119,#080d13 84%)}.login-content{width:min(100%,340px);text-align:center;padding-top:4vh}.eyebrow,.preview-caption,.artist,.chat-day,.demo-note{font-size:10px;letter-spacing:.22em;color:#c5ccd2}.eyebrow{margin:0 0 22px}.login h1{font:400 clamp(39px,11vw,50px)/1.06 var(--serif);letter-spacing:-.035em;margin:0}.login-note{font:17px var(--serif);color:#c0c5ca;margin:19px 0 31px}.pin-dots{height:18px;display:flex;justify-content:center;gap:20px;margin-bottom:24px}.pin-dots span{width:8px;height:8px;border:1px solid #c7ccd0;border-radius:50%;transition:background .16s,transform .16s}.pin-dots span.filled{background:#e8e8e5;transform:scale(1.12)}.login-error{height:16px;color:#e6aeb1;font-size:12px;margin:0 0 8px}.keypad{width:244px;max-width:100%;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:8px 18px}.keypad button{height:53px;border:0;background:transparent;font-size:21px;font-weight:400;border-radius:50%;transition:background .2s}.keypad button:active{background:#ffffff20}.keypad button[data-key=delete]{font-size:21px;color:#bdc4c9}.preview-caption{font-size:8px;letter-spacing:.18em;opacity:.68;margin-top:26px}
.music{padding:calc(17px + env(safe-area-inset-top)) 24px 0}.topbar{height:31px;display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.topbar-title{font:16px var(--serif);letter-spacing:.02em;color:#dfe1df}.text-button{border:0;background:none;color:#bec6cc;padding:8px;font-size:14px}.album-wrap{width:100%;aspect-ratio:1/1;overflow:hidden;background:#111820;border-radius:3px}.album-art{display:block;width:100%;height:100%;object-fit:cover}.track-heading{display:flex;align-items:center;justify-content:space-between;margin-top:17px}.artist{margin:0 0 5px;font-size:9px;letter-spacing:.3em;color:#aab3bd}.track-heading h1{font:400 clamp(24px,7.4vw,32px)/1 var(--serif);letter-spacing:.04em;margin:0}.transport{display:grid;grid-template-columns:38px 1fr 38px;align-items:center;gap:9px;margin-top:15px;color:#a9b0b8;font-size:10px;font-variant-numeric:tabular-nums}.transport span:last-child{text-align:right}input[type=range]{width:100%;height:2px;appearance:none;background:linear-gradient(to right,#e5e7e8 0%,#e5e7e8 var(--progress,0%),#45505a var(--progress,0%),#45505a 100%);border-radius:2px;touch-action:none}input[type=range]::-webkit-slider-thumb{appearance:none;width:11px;height:11px;border-radius:50%;background:#eceded;border:0}input[type=range]::-moz-range-thumb{width:11px;height:11px;border-radius:50%;background:#eceded;border:0}.controls{height:59px;display:flex;align-items:center;justify-content:center;gap:48px;margin:5px 0 0}.control{font-size:22px}.control.selected{color:#fff}.play-button{width:49px;height:49px;border:1px solid #dbe0e0;border-radius:50%;background:#d9dfe11a;font-size:15px;padding-left:18px;transition:transform .15s,background .15s}.play-button:active{transform:scale(.94);background:#ffffff30}.lyrics{height:164px;overflow:hidden;display:flex;flex-direction:column;justify-content:center;text-align:center;margin:7px 0 0;padding:8px 4px}.lyric-line{display:grid;justify-items:center;gap:2px;width:100%;padding:4px;border:0;background:transparent;text-align:center;color:#7f8994;margin:3px 0;transition:color .25s,opacity .25s;cursor:pointer}.lyric-line:focus{outline:none;background:transparent}.lyric-en{font:16px/1.3 var(--serif)}.lyric-zh{font:12px/1.35 var(--sans);color:#818b95}.lyric-line.active{color:#f0efeb}.lyric-line.active .lyric-en{font-size:18px}.lyric-line.active .lyric-zh{color:#c1c6c8}.lyric-line.past{opacity:.55}.bottom-nav{position:fixed;z-index:2;bottom:0;left:50%;transform:translateX(-50%);width:min(100%,460px);height:calc(68px + env(safe-area-inset-bottom));padding:7px 50px env(safe-area-inset-bottom);display:flex;align-items:center;justify-content:space-between;background:#080d13f2;border-top:1px solid #ffffff10}.nav-item{border:0;background:none;min-width:92px;display:grid;justify-items:center;gap:4px;font-size:8px;letter-spacing:.17em;color:#818b95}.nav-item span{font:23px var(--serif);line-height:1;color:#aeb8c0}.nav-item.active{color:#f1f0ec}.nav-item.active span{color:#edf0ef}
.chat{padding:calc(12px + env(safe-area-inset-top)) 16px 0;display:flex;flex-direction:column}.chat-header{display:flex;align-items:center;gap:12px;min-height:51px}.back-button{border:0;background:none;font:35px var(--serif);line-height:1;color:#d0d6db;padding:0 5px 4px 0}.avatar{width:37px;height:37px;border-radius:50%;display:grid;place-items:center;border:1px solid #92a3b2;color:#e5e6e3;font:20px var(--serif)}.chat-person{flex:1}.chat-person h1{font:21px var(--serif);margin:0 0 3px}.chat-person p{margin:0;color:#94a1ac;font-size:11px}.preview-pill{font-size:8px;letter-spacing:.13em;color:#9caab5;border:1px solid #ffffff24;padding:6px 8px;border-radius:20px}.chat-day{text-align:center;margin:27px 0 19px;font-size:8px;letter-spacing:.2em;color:#7f8a94}.messages{display:flex;flex:1;min-height:0;flex-direction:column;align-items:stretch;gap:11px;overflow:auto;overscroll-behavior:contain;padding:0 3px calc(108px + env(safe-area-inset-bottom));scrollbar-width:thin}.message-group{max-width:84%;display:flex;flex-direction:column;position:relative}.message-group.theirs{align-self:flex-start;align-items:flex-start}.message-group.mine{align-self:flex-end;align-items:flex-end}.bubble{padding:11px 15px;border-radius:18px;background:#151d25;color:#edf0f1;font:15px/1.38 var(--serif)}.mine .bubble{background:#243344;border-bottom-right-radius:7px}.theirs .bubble{border-bottom-left-radius:7px}.bubble.photo-bubble{padding:4px}.photo-open{display:block;max-width:100%;padding:0;border:0;border-radius:inherit;background:transparent;overflow:hidden;cursor:zoom-in}.message-group.theirs .photo-open,.message-group.mine .photo-open{border-radius:inherit}.message-group time{font-size:9px;color:#85909a;margin:5px 7px 0}.read-mark{color:#9eb9ca;margin-left:3px}.reaction{position:absolute;bottom:16px;right:-14px;border:0;border-radius:50%;background:#1e2b36;color:#f0b3b5;width:24px;height:24px;font-size:13px}.composer{display:flex;align-items:center;gap:9px;padding:8px 4px 3px;border-top:1px solid #ffffff14}.composer input{height:42px;min-width:0;flex:1;border:1px solid #ffffff23;border-radius:24px;background:#0e141b;padding:0 16px;color:#f5f5f2;font-size:14px}.composer input::placeholder{color:#8f99a3}.camera-button,.send-button{flex:none;width:40px;height:40px;border:0;background:transparent;color:#e5e9e8;font-size:24px}.send-button{font-size:21px}.demo-note{text-align:center;font-size:7px;letter-spacing:.12em;color:#798690;margin:6px 0 9px}.chat .composer{position:fixed;z-index:3;left:50%;bottom:calc(68px + env(safe-area-inset-bottom));transform:translateX(-50%);width:min(100%,460px);padding:8px 16px 7px;background:#080d13;border-top:1px solid #ffffff20}.chat .demo-note{position:fixed;z-index:3;left:50%;bottom:calc(131px + env(safe-area-inset-bottom));transform:translateX(-50%);width:min(100%,460px);margin:0;padding:5px;background:#080d13}.chat .bottom-nav{z-index:4;padding-left:52px;padding-right:52px}
.modal{position:fixed;z-index:10;inset:0;background:#020408c9;display:flex;align-items:flex-end;justify-content:center}.modal[hidden]{display:none}.camera-sheet{width:min(100%,460px);min-height:70vh;padding:10px 20px calc(28px + env(safe-area-inset-bottom));background:#10161d;border-radius:20px 20px 0 0}.sheet-handle{width:40px;height:3px;border-radius:3px;background:#64717b;margin:0 auto 16px}.camera-head{display:flex;align-items:center;justify-content:space-between}.camera-head h2{font:23px var(--serif);margin:4px 0}.camera-head button{font-size:25px}.camera-hint{font-size:12px;color:#a4adb5;margin:5px 0 14px}.camera-view{position:relative;width:100%;aspect-ratio:4/5;background:#080c11;display:grid;place-items:center;overflow:hidden;border-radius:3px}.camera-view video,.camera-view img{position:absolute;width:100%;height:100%;object-fit:cover}.camera-view #camera-placeholder{font:42px var(--serif);color:#687784}.camera-actions{display:flex;gap:12px;margin-top:16px}.camera-action{height:47px;flex:1;border:1px solid #64727d;border-radius:30px;background:transparent;font-size:9px;letter-spacing:.13em}.camera-action.primary{background:#dce1e1;color:#0a1016;border-color:#dce1e1}.camera-action:disabled{opacity:.4}.toast{position:fixed;z-index:20;bottom:90px;left:50%;transform:translateX(-50%);max-width:90vw;background:#202832;color:#f4f4f2;padding:11px 16px;border-radius:28px;font-size:12px;box-shadow:0 8px 28px #0008;animation:toast-in .2s ease both}@keyframes toast-in{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}@media(min-width:700px){body{background:radial-gradient(ellipse at 50% 25%,#121b26,#06090d 55%)}.shell{min-height:100svh;border-left:1px solid #ffffff12;border-right:1px solid #ffffff12}}@media(max-height:780px){.music{padding-top:calc(10px + env(safe-area-inset-top))}.topbar{margin-bottom:8px}.track-heading{margin-top:12px}.transport{margin-top:10px}.lyrics{height:138px}.controls{height:52px}.login{padding-top:28px;padding-bottom:22px}.login-content{padding-top:0}.keypad{gap:1px 18px}.keypad button{height:47px}.login-note{margin-bottom:22px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* iPhone 17 Pro Max portrait canvas: 1320px at 3x = 440 CSS px wide. */
.shell,.bottom-nav,.chat .composer,.chat .demo-note,.camera-sheet{width:min(100%,440px)}
.login{padding:calc(22px + env(safe-area-inset-top)) 24px calc(24px + env(safe-area-inset-bottom))}
.login-content{width:min(100%,376px);padding:26px 20px 22px;border:1px solid rgba(220,233,245,.2);border-radius:27px;background:linear-gradient(145deg,rgba(22,34,47,.75),rgba(7,14,22,.79));-webkit-backdrop-filter:blur(28px) saturate(130%);backdrop-filter:blur(28px) saturate(130%);box-shadow:inset 0 1px 0 rgba(255,255,255,.13),0 22px 58px rgba(0,5,12,.38)}
.login-content .eyebrow{margin-bottom:19px;color:#d3dbe1}
.login h1{font-size:clamp(40px,10.8vw,48px);text-shadow:0 2px 16px rgba(0,0,0,.32)}
.login-note{margin:15px 0 23px;color:#d0d4d7}
.pin-dots{gap:22px;margin-bottom:18px}.pin-dots span{width:9px;height:9px}
.login-error{margin-bottom:8px}
.keypad{width:min(100%,304px);grid-template-columns:repeat(3,72px);justify-content:center;gap:9px 28px}
.keypad button{width:72px;height:72px;border:1px solid rgba(226,237,247,.2);background:rgba(200,218,234,.095);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:inset 0 1px 0 rgba(255,255,255,.12);font-size:28px;font-weight:300;font-variant-numeric:tabular-nums;transition:transform .18s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease}
.keypad button:hover{background:rgba(210,225,238,.16);border-color:rgba(232,241,248,.34)}
.keypad button:active{transform:scale(.94);background:rgba(226,237,247,.23);box-shadow:inset 0 1px 7px rgba(255,255,255,.1)}
.keypad button[data-key=delete]{font-size:19px;color:#d4dce2}

.preview-caption{margin-top:20px}
.topbar{height:42px;margin-bottom:12px}.lock-button{width:44px;height:44px;padding:10px;display:grid;place-items:center;border:1px solid rgba(220,232,242,.15);border-radius:50%;background:rgba(220,232,242,.055);color:#d7e0e7}.lock-button svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.track-heading{align-items:flex-end}.artist{font-size:10px}.track-heading h1{font-size:clamp(24px,7.2vw,32px)}
.controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));justify-items:center;gap:0;height:64px;margin-top:4px}
.control{width:46px;height:46px;padding:0;display:grid;place-items:center;font-size:22px;line-height:1}.play-button{display:grid;place-items:center;padding:0;text-indent:2px;line-height:1;font-size:15px}
.chat-shortcut svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.45;stroke-linecap:round;stroke-linejoin:round}
.bottom-nav{height:calc(68px + env(safe-area-inset-bottom))}
.nav-item span{width:24px;height:24px;display:grid;place-items:center;font-size:23px}
.nav-item span svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.avatar svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
@media(max-height:780px){.login{padding-top:calc(12px + env(safe-area-inset-top));padding-bottom:calc(12px + env(safe-area-inset-bottom))}.login-content{padding:18px 18px 16px}.login h1{font-size:39px}.login-note{margin:12px 0 17px}.pin-dots{margin-bottom:12px}.keypad{grid-template-columns:repeat(3,62px);gap:5px 25px}.keypad button{width:62px;height:62px}.preview-caption{margin-top:14px}}

.entry-hint{margin:18px 0 0;color:#c4cdd4;font-size:9px;letter-spacing:.19em;text-align:center;opacity:.82}
.preview-caption{margin-top:15px}
.login-content{transition:opacity .28s ease,transform .36s cubic-bezier(.22,.61,.36,1)}
.login.unlocking .login-content{opacity:0;transform:translateY(-7px) scale(.985)}
.lyrics{position:relative;display:block;padding:0;opacity:1;transform:none;transition:none}
.lyric-track{position:absolute;top:calc(50% - 28px);left:0;right:0;will-change:transform;transition:transform .72s cubic-bezier(.22,.61,.36,1)}
.lyric-line{height:56px;min-height:56px;margin:0;padding:0 4px;display:grid;align-content:center;justify-items:center;gap:2px;opacity:.32;transform:none;filter:none;animation:none!important;transition:color .42s ease,opacity .58s ease;}
.lyric-line.past{opacity:.43}.lyric-line.future{opacity:.30}.lyric-line.active{opacity:1;color:#f0efeb}
.lyric-line.active .lyric-en{font-size:18px}.lyric-line.active .lyric-zh{color:#c1c6c8}

.login-art{background:radial-gradient(ellipse at 52% 25%,rgba(38,57,73,.7),transparent 47%),linear-gradient(180deg,#0a1119,#080d13 84%)}
.chat-person p{display:flex;align-items:center;gap:6px}.presence-dot{width:7px;height:7px;display:inline-block;border-radius:50%;background:#67717a}.presence-dot.online{background:#35e58b;box-shadow:0 0 9px rgba(53,229,139,.48)}
.chat-person p .online{color:#35e58b}.preview-pill{white-space:nowrap}.preview-pill.online{color:#35e58b;border-color:rgba(53,229,139,.6);background:rgba(53,229,139,.08)}
.private-login-notice{display:flex;align-items:center;gap:9px;margin:12px 18px 0;padding:11px 13px;border:1px solid rgba(53,229,139,.2);border-radius:12px;background:rgba(20,57,41,.3);color:#c8f4dc;font-size:13px;letter-spacing:.015em;animation:notice-in .42s cubic-bezier(.2,.75,.25,1) both}.private-login-notice[hidden]{display:none}.private-login-notice i{width:7px;height:7px;flex:none;border-radius:50%;background:#35e58b;box-shadow:0 0 8px rgba(53,229,139,.48)}@keyframes notice-in{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}
.typing-indicator{position:fixed;z-index:3;left:calc(50% - 202px);bottom:calc(154px + env(safe-area-inset-bottom));margin:0;color:#aab4bc;font:18px var(--serif);letter-spacing:.2em;animation:typing-breathe 1.2s ease-in-out infinite alternate}.typing-indicator[hidden]{display:none}@keyframes typing-breathe{to{opacity:.42;transform:translateY(-2px)}}
.message-photo{display:block;width:min(220px,62vw);max-height:42vh;object-fit:cover;border-radius:13px 13px 4px 13px}.theirs .message-photo{border-radius:13px 13px 13px 4px}.empty-conversation{margin:auto;padding:18px 24px;text-align:center;color:#87929b;font:15px/1.6 var(--serif)}
.photo-viewer{position:fixed;z-index:30;inset:0;display:grid;place-items:center;padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom);background:rgba(2,5,9,.97);touch-action:manipulation}.photo-viewer[hidden]{display:none}.photo-viewer img{display:block;width:100%;max-height:calc(100svh - env(safe-area-inset-top) - env(safe-area-inset-bottom));object-fit:contain}.photo-viewer-close{position:absolute;z-index:1;top:calc(10px + env(safe-area-inset-top));right:16px;width:42px;height:42px;border:1px solid rgba(255,255,255,.25);border-radius:50%;background:rgba(6,10,15,.72);color:#fff;font-size:28px;line-height:1}
body.photo-viewer-open{overflow:hidden}
.send-button:disabled{opacity:.45}.chat .demo-note{line-height:1.3}

/* Keep chat controls in flow so they cannot cover the conversation. */
.chat{height:100svh;height:var(--chat-height,100dvh);min-height:0;overflow:hidden}
.chat .messages{min-height:0;padding-bottom:12px;scroll-padding-bottom:12px}
.chat .demo-note{position:static;left:auto;bottom:auto;transform:none;flex:none;width:100%;margin:0;padding:5px;background:#080d13}
.chat .composer{position:relative;left:auto;bottom:auto;transform:none;flex:none;width:auto;margin:0 -16px;padding:8px 16px 7px;background:#080d13;border-top:1px solid #ffffff20}
.chat .bottom-nav{position:relative;left:auto;bottom:auto;transform:none;flex:none;width:auto;margin:0 -16px}
.chat .typing-indicator{position:static;left:auto;bottom:auto;align-self:flex-start;flex:none;margin:0 0 4px 8px}

.message-group{flex-shrink:0;overflow-wrap:anywhere;min-width:0}.history-more{flex:none;border:0;background:none;padding:12px;color:#aab4bc;font-size:12px}
.chat-header,.private-login-notice{flex-shrink:0}

/* The song is a single, balanced mobile screen; lyrics occupy the space above its page switcher. */
.music.screen{display:flex;flex-direction:column;height:100svh;height:100dvh;min-height:0;overflow:hidden;padding-bottom:calc(68px + env(safe-area-inset-bottom))}
.music .topbar{flex:none}
.music .album-wrap{flex:none;align-self:center;width:min(100%,clamp(220px,calc(100dvh - 500px),376px));aspect-ratio:1/1}
.music .track-heading{flex:none;justify-content:center;text-align:center;margin-top:18px}
.music .track-heading>div{min-width:0}
.music .artist{margin-bottom:7px}
.music .transport{flex:none;margin-top:18px}
.music .controls{flex:none}
.music .lyrics{position:relative;display:block;flex:1;min-width:0;min-height:104px;height:auto;margin:8px 0 0;padding:0;overflow:hidden;text-align:center}
.music .lyric-track{top:calc(50% - 28px)}
.music .bottom-nav{flex:none}
/* Chat intentionally uses the top-left back control; its extra tab bar was removed per the user's screenshot. */
.chat .bottom-nav{display:none}
@media(max-height:780px){
  .music{padding-top:calc(10px + env(safe-area-inset-top))}
  .music .topbar{margin-bottom:8px}
  .music .album-wrap{width:min(100%,clamp(210px,calc(100dvh - 470px),340px))}
  .music .track-heading{margin-top:12px}
  .music .transport{margin-top:11px}
  .music .controls{height:56px}
  .music .lyrics{min-height:82px;margin-top:3px}
}
.screen[hidden]{display:none!important}
.back-button{width:42px;min-height:44px;flex:none;display:grid;place-items:center;padding:0;border:0;background:transparent;color:#d0d6db;font:inherit;line-height:1}
.back-button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.music .bottom-nav{padding-left:20px;padding-right:20px;justify-content:space-around;gap:0}
.music .bottom-nav .nav-item{flex:1;min-width:0;white-space:nowrap}
.moment.screen{height:100svh;height:100dvh;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:calc(13px + env(safe-area-inset-top)) 0 calc(28px + env(safe-area-inset-bottom))}
.moment-header{display:flex;align-items:center;gap:8px;padding:0 14px 19px}
.moment-header h1{margin:0;font:400 24px/1 var(--serif);letter-spacing:.09em;color:#f0efeb}
.moment-state{min-height:68vh;display:grid;align-content:center;justify-items:center;gap:14px;padding:36px 30px;text-align:center;color:#c0c8cf;font:18px/1.5 var(--serif)}
.moment-state[hidden]{display:none}
.moment-state p{max-width:270px;margin:0}
.moment-state-action{min-height:44px;margin-top:5px;padding:0 19px;border:0;border-radius:28px;background:#e1e5e5;color:#111820;font-size:10px;letter-spacing:.14em;transition:transform .16s ease,background .16s ease}
.moment-state-action:active{transform:scale(.97);background:#fff}
.moment-groups{padding:0 3px 22px}
.moment-groups[hidden]{display:none}
.moment-day{margin:0 0 24px}
.moment-day h2{margin:0;padding:5px 12px 12px;color:#e8e8e3;font:18px/1.25 var(--serif)}
.moment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:3px}
.moment-photo{display:block;min-width:0;aspect-ratio:1;padding:0;border:0;background:#111820;overflow:hidden;cursor:zoom-in}
.moment-photo img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.moment-photo:active img{transform:scale(.97)}
.photo-viewer{display:flex;flex-direction:column;justify-content:center;align-items:center;touch-action:pan-y}
.photo-viewer img{width:100%;max-height:calc(100svh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 106px);object-fit:contain;flex:none}
.photo-viewer-meta{position:absolute;right:20px;bottom:calc(20px + env(safe-area-inset-bottom));left:20px;display:flex;align-items:center;justify-content:space-between;gap:16px;color:#d5dbe0;font:13px/1.35 var(--sans)}
.photo-viewer-meta span:last-child{color:#87939e;font-variant-numeric:tabular-nums}
@media(prefers-reduced-motion:reduce){.moment-photo img,.moment-state-action{transition:none}}

/* Keep Moment on the same three-destination navigation as the song screen. */
.moment.screen{display:flex;flex-direction:column;height:100svh;height:100dvh;min-height:0;overflow:hidden;overscroll-behavior:contain;padding:calc(13px + env(safe-area-inset-top)) 0 0}
.moment-header{flex:none}
.moment-state{flex:1;min-height:0}
.moment-groups{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding-bottom:12px}
.moment .bottom-nav{position:relative;left:auto;bottom:auto;transform:none;flex:none;width:auto;margin:0;padding-left:20px;padding-right:20px;justify-content:space-around;gap:0}

/* Apple-sized touch targets for navigation, seeking, and chat composition. */
.nav-item{min-height:44px;padding:4px 8px}
.back-button{width:44px;height:44px}
.transport input[type=range]{height:44px;appearance:none;background:transparent}
.transport input[type=range]::-webkit-slider-runnable-track{height:2px;border-radius:2px;background:linear-gradient(to right,#e5e7e8 0%,#e5e7e8 var(--progress,0%),#45505a var(--progress,0%),#45505a 100%)}
.transport input[type=range]::-webkit-slider-thumb{width:14px;height:14px;margin-top:-6px}
.transport input[type=range]::-moz-range-track{height:2px;border:0;border-radius:2px;background:linear-gradient(to right,#e5e7e8 0%,#e5e7e8 var(--progress,0%),#45505a var(--progress,0%),#45505a 100%)}
.transport input[type=range]::-moz-range-thumb{width:14px;height:14px;border:0}
.chat .composer input{height:44px}
.chat .camera-button,.chat .send-button{width:44px;height:44px}
.camera-head button{min-width:44px;min-height:44px}
.photo-viewer-close{width:44px;height:44px}
.photo-viewer-image-button{display:grid;place-items:center;width:100%;max-height:calc(100svh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 106px);padding:0;border:0;background:transparent;touch-action:pan-y;cursor:zoom-out}
.photo-viewer-image-button:focus-visible{outline:2px solid #b2c8dc;outline-offset:3px}
.photo-viewer-image-button img{transition:transform 180ms cubic-bezier(.22,.61,.36,1)}
.nav-item:active,.back-button:active,.camera-button:active,.send-button:active{transform:scale(.96)}
.moment-photo img{transition:transform .18s ease-out}
.history-more{min-height:44px}
/* Keep Safari's keyboard pan inside the chat viewport, not the document. */
html,body{height:100%;overflow:hidden;overscroll-behavior:none}
body{position:fixed;inset:0;width:100%;height:100%}
.shell{height:100svh;height:100dvh;min-height:0}
.login{height:100%;min-height:0;overflow-y:auto}
.chat.screen{position:fixed;top:var(--chat-top,0px);left:50%;transform:translateX(-50%);width:min(100%,440px);height:var(--chat-height,100dvh);padding-bottom:env(safe-area-inset-bottom)}
.chat .composer input{font-size:16px}
.chat.keyboard-open{padding-bottom:0}
.chat.keyboard-open .private-login-notice,.chat.keyboard-open .demo-note{display:none}
@media(prefers-reduced-motion:reduce){.moment-photo img{transition:none}}

/* iOS 27 Liquid Glass inspired chrome: vivid rose accents on a quiet ink canvas. */
:root{
  color-scheme:dark;
  --ink:#f8f2f7;
  --muted:#b6a9b8;
  --night:#09080f;
  --blue:#28243a;
  --line:rgba(245,232,248,.15);
  --rose:#ff4dcc;
  --rose-soft:#ff91dc;
  --glass:rgba(24,19,32,.72);
  --glass-edge:rgba(255,239,250,.2)
}
html,body{background:#07070d;color:var(--ink)}
body{background:radial-gradient(ellipse at 85% 3%,rgba(87,39,89,.19),transparent 36%),radial-gradient(ellipse at 8% 46%,rgba(36,49,78,.19),transparent 44%),#07070d}
.shell{background:radial-gradient(ellipse at 80% 8%,rgba(255,77,204,.035),transparent 36%),var(--night);box-shadow:0 0 90px rgba(0,0,0,.65)}
button:focus-visible,input:focus-visible{outline-color:var(--rose-soft)}
.login-art{background:radial-gradient(ellipse at 68% 26%,rgba(146,55,126,.27),transparent 44%),radial-gradient(ellipse at 28% 54%,rgba(37,67,103,.26),transparent 50%),linear-gradient(180deg,#100d17,#08080f 84%)}
.login-content{border-color:rgba(255,221,246,.23);background:linear-gradient(145deg,rgba(46,29,47,.78),rgba(12,11,19,.82));box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 24px 70px rgba(0,0,0,.32)}
.login-content .eyebrow,.entry-hint{color:#f4c0e5}
.keypad button{border-color:rgba(255,221,246,.22);background:linear-gradient(145deg,rgba(255,255,255,.09),rgba(173,111,171,.075));box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 8px 18px rgba(0,0,0,.16)}
.keypad button:hover{border-color:rgba(255,145,220,.52);background:rgba(255,77,204,.14)}
.keypad button:active{background:rgba(255,77,204,.24);box-shadow:inset 0 1px 8px rgba(255,123,219,.16)}
.lock-button,.preview-pill,.avatar,.back-button{border-color:var(--glass-edge);background:linear-gradient(145deg,rgba(255,255,255,.095),rgba(134,96,143,.11));-webkit-backdrop-filter:blur(22px) saturate(165%);backdrop-filter:blur(22px) saturate(165%);box-shadow:inset 0 1px 0 rgba(255,255,255,.13)}
.back-button{border:1px solid rgba(255,239,250,.14);font-size:24px}
.avatar{color:#ffd8f1}
.album-wrap{border:1px solid rgba(255,227,246,.17);box-shadow:0 12px 36px rgba(0,0,0,.26),0 0 28px rgba(255,77,204,.055)}
.artist{color:#e6a9d3}
.transport input[type=range]{background:linear-gradient(to right,var(--rose) 0%,var(--rose) var(--progress,0%),#514957 var(--progress,0%),#514957 100%)}
.transport input[type=range]::-webkit-slider-thumb{background:#fff4fc;box-shadow:0 0 0 4px rgba(255,77,204,.18),0 0 14px rgba(255,77,204,.55)}
.transport input[type=range]::-moz-range-thumb{background:#fff4fc;box-shadow:0 0 0 4px rgba(255,77,204,.18),0 0 14px rgba(255,77,204,.55)}
.control.selected{color:var(--rose-soft)}
.play-button{border-color:rgba(255,166,229,.64);background:linear-gradient(145deg,rgba(255,92,208,.27),rgba(98,50,105,.33));color:#fff7fd;box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 0 24px rgba(255,77,204,.15);-webkit-backdrop-filter:blur(18px) saturate(175%);backdrop-filter:blur(18px) saturate(175%)}
.play-button:active{background:linear-gradient(145deg,rgba(255,92,208,.42),rgba(98,50,105,.4))}
.lyric-line.active{color:#fff8fd;text-shadow:0 0 22px rgba(255,77,204,.16)}
.lyric-line.active .lyric-zh{color:#edb5db}
.bottom-nav{border-top:1px solid rgba(255,237,249,.17);background:linear-gradient(180deg,rgba(26,21,34,.76),rgba(11,10,17,.91));-webkit-backdrop-filter:blur(28px) saturate(175%);backdrop-filter:blur(28px) saturate(175%);box-shadow:0 -10px 30px rgba(0,0,0,.16),inset 0 1px 0 rgba(255,255,255,.06)}
.nav-item{color:#a99eac}
.nav-item.active{color:#ffe2f5;text-shadow:0 0 16px rgba(255,77,204,.22)}
.nav-item.active span{color:var(--rose-soft)}
.chat-person h1,.moment-header h1{color:#fbf5fa}
.presence-dot.online{background:#35e58b;box-shadow:0 0 9px rgba(53,229,139,.44)}
.chat .messages{scrollbar-color:rgba(255,255,255,.22) transparent}
.bubble{border:1px solid rgba(255,242,250,.055);background:linear-gradient(145deg,rgba(30,28,39,.96),rgba(22,21,31,.96));box-shadow:inset 0 1px 0 rgba(255,255,255,.035)}
.mine .bubble{border-color:rgba(255,133,219,.18);background:linear-gradient(145deg,rgba(64,43,68,.96),rgba(38,35,55,.98));box-shadow:inset 0 1px 0 rgba(255,216,244,.1)}
.reaction{background:rgba(58,34,57,.93);color:#ff81d7;border:1px solid rgba(255,147,220,.18)}
.chat .composer{border-top-color:rgba(255,238,249,.15);background:linear-gradient(180deg,rgba(27,22,34,.82),rgba(11,10,17,.94));-webkit-backdrop-filter:blur(28px) saturate(175%);backdrop-filter:blur(28px) saturate(175%);box-shadow:0 -12px 32px rgba(0,0,0,.22),inset 0 1px 0 rgba(255,255,255,.06)}
.chat .composer input{border-color:rgba(255,235,248,.16);background:rgba(30,25,37,.78);box-shadow:inset 0 1px 0 rgba(255,255,255,.055);-webkit-backdrop-filter:blur(20px) saturate(155%);backdrop-filter:blur(20px) saturate(155%)}
.chat .composer input:focus{border-color:rgba(255,117,213,.62);box-shadow:0 0 0 3px rgba(255,77,204,.1),inset 0 1px 0 rgba(255,255,255,.08)}
.camera-button{border:1px solid rgba(255,237,249,.13);border-radius:50%;background:linear-gradient(145deg,rgba(255,255,255,.09),rgba(127,90,136,.11));-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}
.send-button{border:1px solid rgba(255,166,229,.38);border-radius:50%;background:linear-gradient(145deg,rgba(255,90,205,.22),rgba(110,55,111,.2));color:#ffe2f5;text-shadow:0 0 12px rgba(255,77,204,.34)}
.moment-header h1{letter-spacing:.13em}
.moment-state{color:#d5c9d6}
.moment-state-action,.camera-action.primary{border:1px solid rgba(255,178,231,.48);background:linear-gradient(145deg,#ec4bb9,#9e3d88);color:#fff8fd;box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 8px 24px rgba(191,55,150,.18)}
.moment-state-action:active,.camera-action.primary:active{background:linear-gradient(145deg,#ff65cc,#ad4a98)}
.moment-photo{border-radius:4px;background:#17131d}
.moment-photo img{border-radius:inherit}
.photo-viewer{background:rgba(6,5,12,.96);-webkit-backdrop-filter:blur(22px) saturate(140%);backdrop-filter:blur(22px) saturate(140%)}
.photo-viewer-close{border-color:rgba(255,230,247,.27);background:rgba(33,26,40,.76);color:#fff2fa;-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px)}
.photo-viewer-meta{color:#fbf1f8;text-shadow:0 1px 8px rgba(0,0,0,.5)}
.camera-sheet{border:1px solid rgba(255,231,247,.17);border-bottom:0;background:linear-gradient(150deg,rgba(40,29,47,.92),rgba(15,13,22,.97));box-shadow:0 -16px 50px rgba(0,0,0,.4);-webkit-backdrop-filter:blur(30px) saturate(155%);backdrop-filter:blur(30px) saturate(155%)}
.camera-action{border-color:rgba(255,228,246,.26);background:rgba(255,255,255,.055);color:#eadfe9}
.camera-view{border:1px solid rgba(255,235,248,.15);background:#0c0a11}
@media(prefers-reduced-transparency:reduce){
  .login-content,.lock-button,.preview-pill,.avatar,.back-button,.play-button,.bottom-nav,.chat .composer,.chat .composer input,.camera-button,.photo-viewer-close,.camera-sheet{backdrop-filter:none;-webkit-backdrop-filter:none}
  .login-content{background:#17111d}.bottom-nav,.chat .composer{background:#100e17}.chat .composer input{background:#1c1824}.camera-sheet{background:#17131e}
}
@media(prefers-contrast:more){
  .login-content,.lock-button,.preview-pill,.avatar,.back-button,.play-button,.bottom-nav,.chat .composer,.chat .composer input,.camera-button,.photo-viewer-close,.camera-sheet{border-color:rgba(255,245,252,.48)}
  .bottom-nav,.chat .composer,.chat .composer input,.camera-sheet{background:rgba(13,11,18,.98)}
}

.nav-item>span:first-child{position:relative;overflow:visible}
.nav-item .nav-badge:not([hidden]){position:absolute;z-index:1;top:-6px;right:-9px;width:auto;min-width:18px;height:18px;padding:0 4px;display:grid;place-items:center;border:2px solid #100e17;border-radius:999px;background:var(--rose);box-shadow:0 2px 10px rgba(255,77,204,.38);color:#fff;font:700 9px/1 var(--sans);letter-spacing:0;white-space:nowrap;animation:nav-badge-in .18s cubic-bezier(.2,.8,.2,1) both}
.nav-item .nav-badge[hidden]{display:none}
@keyframes nav-badge-in{from{opacity:0;transform:scale(.72)}to{opacity:1;transform:scale(1)}}
@media(prefers-reduced-motion:reduce){.nav-item .nav-badge:not([hidden]){animation:none}}

/* Refined iOS controls and a compact, aligned conversation header. */
.transport input[type=range]{
  width:100%;height:44px;margin:0;padding:0;border:0;border-radius:0;box-shadow:none;
  -webkit-appearance:none;appearance:none;background:transparent!important;
}
.transport input[type=range]::-webkit-slider-runnable-track{
  height:2px;border:0;border-radius:999px;box-shadow:none;
  background:linear-gradient(to right,var(--rose) 0,var(--rose) var(--progress,0%),rgba(228,222,232,.3) var(--progress,0%),rgba(228,222,232,.3) 100%);
}
.transport input[type=range]::-webkit-slider-thumb{
  width:12px;height:12px;margin-top:-5px;border:2px solid #fff5fc;border-radius:50%;
  -webkit-appearance:none;appearance:none;background:#fff5fc;box-shadow:0 0 0 3px rgba(255,77,204,.15),0 0 10px rgba(255,77,204,.32);
}
.transport input[type=range]::-moz-range-track{height:2px;border:0;border-radius:999px;background:rgba(228,222,232,.3)}
.transport input[type=range]::-moz-range-progress{height:2px;border-radius:999px;background:var(--rose)}
.transport input[type=range]::-moz-range-thumb{width:9px;height:9px;border:2px solid #fff5fc;border-radius:50%;background:#fff5fc;box-shadow:0 0 0 3px rgba(255,77,204,.15),0 0 10px rgba(255,77,204,.32)}

.moment-header .back-button,.chat-header .back-button{
  width:44px;height:44px;min-width:44px;padding:0;border:0;border-radius:0;background:transparent;
  box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;color:#d9d1dc;
}
.back-button svg{width:20px;height:20px}
.back-button:active{background:transparent;transform:scale(.92)}

.chat-header{
  display:grid;grid-template-columns:44px 38px minmax(0,1fr) auto;grid-template-rows:minmax(44px,auto);
  align-items:center;column-gap:8px;min-height:51px;
}
.chat-header>.back-button{grid-column:1;grid-row:1}
.chat-header>.avatar{grid-column:2;grid-row:1}
.chat-header>.chat-person{grid-column:3;grid-row:1;min-width:0}
.chat-header>#presence-pill{grid-column:4;grid-row:1;white-space:nowrap}
.chat-person{min-width:0}
.chat-person .presence-line{min-width:0;white-space:nowrap;gap:4px;font-size:10px}
.chat-person #presence-text{flex:none}
.private-login-notice{
  position:static;flex:1 1 auto;display:inline-flex;align-items:center;gap:3px;min-width:0;max-width:100%;overflow:hidden;
  margin:0;padding:0;border:0;border-radius:0;background:transparent;color:#c8f4dc;
  font-size:9px;line-height:13px;letter-spacing:0;animation:none;
}
.private-login-notice[hidden]{display:none}
.private-login-notice>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.private-login-notice>i{width:5px;height:5px;flex:none;border-radius:50%;background:#35e58b;box-shadow:0 0 8px rgba(53,229,139,.48)}

html,body{overflow-x:hidden;overscroll-behavior-x:none}
.chat{overflow-x:hidden;overscroll-behavior-x:none}
.chat .messages{overflow-x:hidden;overflow-y:auto;overscroll-behavior-x:none;overscroll-behavior-y:contain;touch-action:pan-y}
.bubble{touch-action:manipulation}
.reaction{
  left:50%;right:auto;bottom:15px;width:auto;height:auto;padding:0;border:0;border-radius:0;
  background:transparent;box-shadow:none;transform:translateX(-50%);color:inherit;
  font-size:19px;line-height:20px;pointer-events:none;filter:drop-shadow(0 1px 5px rgba(0,0,0,.35));
}
.message-group.has-reaction time{margin-top:14px}

.chat .demo-note{padding:0;border:0;background:transparent;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}