/* 招小协（Apatie）介绍与下载页。令牌来自 website/design.md；招小协的页面更柔和活泼：圆角、衬线标题、滚动叙事。 */
@font-face{font-family:'Apatie Serif';src:url(/assets/fonts/apatie-serif-zh.woff2?v=59ff79b99e) format('woff2');font-weight:500 700;font-display:swap}
@font-face{font-family:'Instrument Serif';src:url(/assets/fonts/instrument-serif.woff2?v=d27cc48920) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Instrument Serif';src:url(/assets/fonts/instrument-serif-italic.woff2?v=a6e9661c9c) format('woff2');font-weight:400;font-style:italic;font-display:swap}

:root{
  color-scheme:light;
  --paper:#fff;--ink:#171717;--muted:#666;--on-accent:#fff;
  --line:#e5e5e5;
  --surface:#f5f5f5;
  --red:#b84f42;--red-text:#b84f42;--red-hover:#a3463b;--red-press:#8f3d33;--on-red:#fff;--red-soft:color-mix(in srgb,var(--red) 10%,var(--paper));--focus:#171717;
  --sans:'PingFang SC','PingFang TC','Hiragino Sans GB','Microsoft YaHei','Microsoft JhengHei','Noto Sans SC','Noto Sans TC',system-ui,-apple-system,'Segoe UI',sans-serif;
  --serif:'Instrument Serif','Apatie Serif','Songti SC','Songti TC','Noto Serif CJK SC','Source Han Serif SC',serif;
  --mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,1,.36,1);--spring:cubic-bezier(.34,1.56,.64,1);
  --r-sm:8px;--r:12px;--r-lg:18px;
  --gutter:clamp(1rem,4vw,3rem);
  --shadow:0 1px 2px rgba(0,0,0,.05),0 12px 40px -12px rgba(0,0,0,.16);
}
:root[data-theme=dark]{
  color-scheme:dark;
  --paper:#0a0a0a;--ink:#ededed;--muted:#a1a1a1;--on-accent:#0a0a0a;--red-text:#ec9688;--red:#9b473c;--red-hover:#a95347;--red-press:#873e34;--on-red:#fbf1ef;--focus:#ededed;
  --line:#262626;
  --surface:#161616;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 16px 48px -16px rgba(0,0,0,.6);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1rem/1.75 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip;transition:background-color 320ms var(--ease),color 320ms var(--ease)}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:6px}
.wrap{width:min(100% - 2*var(--gutter),72rem);margin-inline:auto}
.dk{display:none}
:root[data-theme=dark] .lt{display:none}
:root[data-theme=dark] .dk{display:block}

/* Header */
.top{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:1px solid transparent;transition:border-color 240ms}
.top.scrolled{border-bottom-color:var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:4rem}
.brand{display:flex;align-items:center;gap:.5rem;line-height:1;text-decoration:none;font-weight:700;white-space:nowrap}
.brand img{border-radius:8px;flex:none}
.brand span{display:block;line-height:1}
.brand small{color:var(--muted);font:400 1.3125rem/1 'Instrument Serif',serif;letter-spacing:.005em}
.top nav{display:flex;align-items:center;gap:.375rem}
.navlink{padding:.375rem .625rem;border-radius:var(--r-sm);text-decoration:none;color:var(--muted);font-size:.9375rem;transition:color 160ms,background-color 160ms}
.navlink:hover{color:var(--ink);background:var(--surface)}
.seg{display:inline-flex;padding:3px;margin-left:.375rem;border-radius:10px;background:var(--surface);border:1px solid var(--line)}
.seg button{min-width:2rem;height:28px;padding:0 .5rem;border:0;border-radius:7px;background:none;color:var(--muted);font-size:.8125rem;font-weight:600;cursor:pointer;transition:background-color 200ms,color 200ms}
.seg button[aria-pressed=true]{background:var(--paper);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.14)}
/* Hit areas reach 44px without changing how the controls look. */
.seg button,.icon-btn,.hs-pip{position:relative}
.seg button::after,.icon-btn::after,.hs-pip::after{content:"";position:absolute;inset:-8px 0}
.icon-btn::after{inset:-5px}
.hs-pip::after{inset:-2px 0}
.icon-btn{display:inline-grid;place-items:center;width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:none;cursor:pointer;transition:transform 200ms var(--spring),background-color 160ms}
.icon-btn:hover{background:var(--surface)}
.icon-btn:active{transform:scale(.9) rotate(-12deg)}
.icon-btn svg{width:20px;height:20px;display:block;overflow:visible}
/* Sun ↔ moon: the rays tuck away while a shadow slides across the disc. */
.ti-rays{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;transform-origin:12px 12px;transition:transform 520ms var(--spring),opacity 260ms}
.ti-core{transform-origin:12px 12px;transition:transform 520ms var(--spring)}
.ti-cut{transition:transform 520ms var(--ease)}
:root[data-theme=dark] .ti-rays{opacity:0;transform:rotate(-90deg) scale(.4)}
:root[data-theme=dark] .ti-core{transform:scale(1.55)}
:root[data-theme=dark] .ti-cut{transform:translate(-8px,5px)}
.icon-btn:hover .ti-rays{transform:rotate(30deg)}
:root[data-theme=dark] .icon-btn:hover .ti-core{transform:scale(1.55) rotate(-14deg)}
/* Theme change: a circle of the new theme grows from the button. */
::view-transition-old(root),::view-transition-new(root){animation:none;mix-blend-mode:normal}
.vt-theme::view-transition-old(root){z-index:1}
.vt-theme::view-transition-new(root){z-index:2}
.vt-theme *,.vt-theme *::before,.vt-theme *::after{transition:none!important}
.theme-veil{position:fixed;inset:0;z-index:2147483000;pointer-events:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:38px;padding:0 1.125rem;border-radius:var(--r);background:var(--ink);color:var(--paper);font-weight:600;font-size:.9375rem;text-decoration:none;white-space:nowrap;transition:transform 220ms var(--spring),box-shadow 220ms var(--ease),background-color 200ms}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px -8px color-mix(in srgb,var(--ink) 60%,transparent)}
.btn:active{transform:scale(.97)}
/* The one primary action per region is brand red (colour system); other buttons stay ink. */
.btn-lg,.btn[data-poster-open],.row[data-detected=true] .btn{background:var(--red);color:var(--on-red)}
.btn-lg:hover,.btn[data-poster-open]:hover,.row[data-detected=true] .btn:hover{background:var(--red-hover);box-shadow:0 8px 20px -8px color-mix(in srgb,var(--red) 70%,transparent)}
.btn-lg:active,.btn[data-poster-open]:active,.row[data-detected=true] .btn:active{background:var(--red-press)}
.btn-sm{min-height:34px;padding:0 .875rem;font-size:.875rem;border-radius:10px;margin-left:.25rem}
.btn-lg{min-height:48px;padding:0 1.5rem;font-size:1rem;border-radius:14px;max-width:100%;white-space:normal;text-align:center;line-height:1.3}
.btn-lg>span{min-width:0;white-space:normal;overflow-wrap:anywhere}
.dl-ico{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-lg:hover .dl-ico{animation:nudge 700ms var(--ease)}
@keyframes nudge{40%{transform:translateY(3px)}}
.link{color:var(--muted);text-underline-offset:4px;font-size:.9375rem}.link:hover{color:var(--ink)}

/* Type */
.display{font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.12;text-wrap:balance;margin:0}
.serif-ok .display x-p{letter-spacing:-.42em}
x-c{display:inline-block;max-width:100%}
x-w{white-space:nowrap}
h1,h2,h3,h4{text-wrap:balance}
p,li,small,.msg{text-wrap:pretty}
.ht-who small{white-space:nowrap}
button,.btn,.chip,.burst{white-space:nowrap}
.display em{font-style:italic;color:var(--red-text)}
:root:not([data-lang=en]) .display em{font-style:normal}
:root[data-lang=en] .display{font-weight:400;letter-spacing:-.015em;line-height:1.02}
h1.display{font-size:clamp(2.75rem,8vw,6.25rem)}
:root[data-lang=en] h1.display{font-size:clamp(3.25rem,9.5vw,7.5rem)}
h2.display{font-size:clamp(2rem,4.8vw,3.5rem)}
:root[data-lang=en] h2.display{font-size:clamp(2.375rem,5.6vw,4.25rem)}
h3.display{font-size:1.5rem}
:root[data-lang=en] h3.display{font-size:1.875rem}
.eyebrow{display:inline-block;margin:0 0 1rem;padding:.25rem .625rem;border-radius:999px;background:var(--red-soft);color:var(--red-text);font-size:.8125rem;font-weight:600;letter-spacing:.02em}
.lede{margin:1.25rem 0 0;max-width:38rem;font-size:clamp(1.0625rem,1.5vw,1.1875rem);color:var(--muted);text-wrap:pretty}

/* Hero */
.hero{position:relative;padding:clamp(3rem,8vw,6rem) 0 0;text-align:center}
.hero-in{position:relative;z-index:1}
.hero .lede{margin-inline:auto}
.hero .cta{margin-bottom:2.25rem}
.hero h1 .ln{display:block;overflow:hidden;padding-bottom:.08em}
.hero h1 .ln>span{display:inline-block}
.cta{display:flex;gap:1.25rem;align-items:center;justify-content:center;flex-wrap:wrap;margin-top:2rem}
.hero-shot{margin-top:clamp(2.5rem,6vw,4.5rem);transform-origin:50% 0;will-change:transform}
.stickers{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.st{position:absolute;color:var(--red-text);opacity:.55;font-weight:600;white-space:nowrap;animation:bob 6s ease-in-out infinite;translate:calc(var(--mx,0) * var(--d,10px)) calc(var(--my,0) * var(--d,10px));transition:translate 600ms var(--ease)}
.st1{--d:-18px}.st2{--d:12px}.st3{--d:-10px}.st4{--d:22px}.st5{--d:8px}
.st1{left:9%;top:16%;font-size:1.75rem}
.st2{right:8%;top:22%;font-size:1rem;animation-delay:-2s}
.st3{left:14%;top:46%;font-size:1.5rem;animation-delay:-4s}
.st4{right:15%;top:52%;font-size:1.25rem;animation-delay:-1s}
.st5{left:4%;top:31%;font-size:.9375rem;animation-delay:-3s}
@keyframes bob{50%{transform:translateY(-10px) rotate(4deg)}}

/* Frames */
.frame{margin:0;position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper);box-shadow:var(--shadow)}
.frame img,.frame video{width:100%}
.chrome{display:flex;align-items:center;gap:.4rem;height:2.25rem;padding:0 .875rem;border-bottom:1px solid var(--line);background:var(--surface)}
.chrome i{width:.625rem;height:.625rem;border-radius:50%;background:var(--line)}
.chrome i:nth-child(1){background:#ff5f57}.chrome i:nth-child(2){background:#febc2e}.chrome i:nth-child(3){background:#28c840}
.chrome span{margin:0 auto;transform:translateX(-1.1rem);font-size:.75rem;color:var(--muted)}

/* Sections */
.block{padding-top:clamp(5rem,12vw,9rem)}
.head{margin-bottom:clamp(1.5rem,3vw,2.25rem)}
.zoom{transform-origin:50% 30%;will-change:transform}
/* The rounded clip around the video gets its own stable layer, so WebKit does not redraw it in blocks. */
.zoom{isolation:isolate;-webkit-mask-image:-webkit-radial-gradient(white,black);mask-image:radial-gradient(white,black)}
@media(hover:none){.hero-shot,.zoom{will-change:auto;transform:none!important}}

/* 招小协: a kaomoji face and a speech card. */
.guide{display:flex;align-items:flex-start;gap:.75rem;max-width:34rem;margin:0 0 2rem}
.hero-guide{justify-content:center;margin:0 auto 2rem;text-align:left}
/* Fixed size, so the rotating lines never nudge the layout. */
.hero-guide .bubble{width:min(25rem,100%)}
.hero-guide .bubble span{min-height:calc(2em * 1.65)}
@media (max-width:480px){
  .hero-guide{flex-direction:column;align-items:flex-start;gap:.5rem}
  .hero-guide .bubble{width:100%}
  :root[data-lang=en] .hero-guide .bubble span{min-height:calc(3em * 1.65)}
}
.face{flex:none;display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 .875rem;border:0;border-radius:14px;background:var(--red-soft);color:color-mix(in srgb,var(--red) 82%,var(--ink));font:600 1.125rem/1 var(--sans);white-space:pre;cursor:pointer;transform-origin:50% 90%;-webkit-tap-highlight-color:transparent;transition:transform 240ms var(--spring)}
.face:hover{transform:rotate(-4deg) scale(1.04)}
.face span{display:inline-block;text-align:center}
.face.sm{height:36px;padding:0 .75rem;font-size:.9375rem;border-radius:12px;cursor:default}
.bubble{position:relative;margin:0;padding:.625rem .875rem .7rem;border:1px solid var(--line);border-radius:14px;border-top-left-radius:4px;background:var(--paper);font-size:.9375rem;line-height:1.65;text-wrap:pretty;box-shadow:0 6px 20px -12px rgba(0,0,0,.25)}
.bubble b{display:block;margin-bottom:.125rem;color:var(--red-text);font-size:.75rem;font-weight:650;letter-spacing:.04em}
.bubble span{display:block;transition:opacity 160ms,transform 200ms var(--ease)}
.bubble span.swap{opacity:0;transform:translateY(4px)}
.face.hop{animation:g-hop 560ms var(--ease)}
.face.wave{animation:g-wave 1000ms var(--ease)}
.face.cheer{animation:g-hop 520ms var(--ease) 2}
@keyframes g-hop{0%,100%{transform:none}35%{transform:translateY(-8px) scale(1.04)}65%{transform:translateY(1px) scale(.98)}}
@keyframes g-wave{0%,100%{transform:none}20%{transform:rotate(-8deg)}45%{transform:rotate(7deg)}70%{transform:rotate(-3deg)}}
.mini{display:inline-block;margin-bottom:.75rem;color:var(--red-text);font-size:1.125rem;font-weight:600;white-space:pre;transition:transform 300ms var(--spring)}

/* Pinned story */
.story-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,20rem);gap:clamp(2rem,5vw,4.5rem)}
.stage{position:sticky;top:calc(4rem + max(3vh,1.5rem));align-self:start}
.stage{width:min(100%,calc((100svh - 10.5rem) * 1.6));justify-self:center}
.shots{position:relative;aspect-ratio:1920/1200}
.shot{position:absolute;inset:0;opacity:0;transform:scale(1.03);transition:opacity 520ms var(--ease),transform 700ms var(--ease)}
.shot.on{opacity:1;transform:none}
.shot img{width:100%;height:100%;object-fit:cover}
.progress{display:flex;gap:6px;justify-content:center;margin-top:1rem}
.progress i{width:6px;height:6px;border-radius:3px;background:var(--line);transition:width 360ms var(--ease),background-color 300ms}
.progress i.on{width:22px;background:var(--red)}
.stage-guide{position:absolute;right:-.75rem;bottom:2.25rem}
.stage-guide .face{box-shadow:var(--shadow);background:var(--paper);border:1px solid var(--line)}
.steps{padding:16vh 0 14vh}
.step{min-height:62vh;display:flex;flex-direction:column;justify-content:center;opacity:.28;transform:translateX(8px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.step.on{opacity:1;transform:none}
.step-no{margin:0 0 .5rem;font:italic 400 1.5rem/1 'Instrument Serif',serif;color:var(--red-text)}
.step p:last-child{margin:.75rem 0 0;color:var(--muted)}

/* Features */
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.card{position:relative;overflow:hidden;padding:1.75rem 1.5rem 1.5rem;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);transition:translate 320ms var(--spring),box-shadow 320ms var(--ease),opacity 800ms var(--ease),transform 900ms var(--ease)}
.card::before{content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;background:color-mix(in srgb,var(--ink) 4%,transparent);transition:opacity 300ms}
.card>*{position:relative}
.card:hover{translate:0 -4px;box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.card:hover .mini{transform:rotate(-8deg) scale(1.08)}
.card p{margin:.625rem 0 0;color:var(--muted)}

/* Sign-in */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(2rem,5vw,4.5rem);align-items:center}
.plain{margin:1.5rem 0 2rem;padding:0;list-style:none;display:grid;gap:.625rem}
.plain li{padding-left:1.375rem;position:relative;color:var(--muted);text-wrap:pretty}
.plain li::before{content:'';position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--red)}
.pair{position:relative;padding-bottom:3rem}
/* The web's 「打开招小协」 card, drawn like Hub's, resting on the app window. */
.hub.webcard{position:absolute;right:-1rem;bottom:0;display:flex;flex-direction:column;gap:.375rem;width:min(19.5rem,72%);height:auto;padding:16px 18px 18px;border:1px solid var(--h-line);border-top:3px solid var(--h-red);box-shadow:var(--shadow);opacity:0;transform:translateY(14px);transition:opacity 500ms 250ms,transform 700ms var(--spring) 250ms}
.hub.webcard.in{opacity:1;transform:none}
.wc-where{position:absolute;top:18px;right:18px;color:var(--muted);font:600 .6875rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase}
.wc-head{display:flex;align-items:center;gap:10px;margin-bottom:4px}
.wc-face{display:inline-flex;align-items:center;height:30px;padding:0 10px;background:color-mix(in srgb,var(--h-red) 10%,var(--h-paper));color:var(--h-red-text);font-weight:650;white-space:pre}
.wc-who{display:flex;flex-direction:column;line-height:1.25}
.wc-who b{font-size:13px}.wc-who small{color:var(--h-red-text);font-size:11px;font-weight:650}
.wc-h{font-size:16px;font-weight:700;letter-spacing:-.01em}
.wc-p{color:var(--h-muted);font-size:13px}
.wc-row{display:flex;align-items:center;justify-content:space-between;margin-top:8px}
.wc-go{padding:9px 16px;background:var(--h-red);color:var(--h-on);font-size:13px;font-weight:650}
.wc-stay{color:var(--h-muted);font-size:13px}
.burst{position:fixed;z-index:60;left:0;top:0;pointer-events:none;color:var(--red-text);font-weight:600;white-space:pre}

/* Member card: a 3D card that flips and follows a drag */
.chip{display:inline-flex;align-items:center;gap:.375rem;min-height:38px;padding:0 1rem;border:1px solid var(--line);border-radius:var(--r);background:var(--paper);font-size:.9375rem;font-weight:600;cursor:pointer;transition:transform 220ms var(--spring),background-color 160ms}
.chip:hover{background:var(--surface)}
.chip:active{transform:scale(.96)}
.pass-demo{display:grid;justify-items:center;gap:1.5rem}
.pass3d{width:min(340px,78vw);aspect-ratio:340/652;perspective:1400px;cursor:grab;touch-action:pan-y;-webkit-tap-highlight-color:transparent;border-radius:22px}
.pass3d.drag{cursor:grabbing}
.pass-in{position:relative;width:100%;height:100%;transform-style:preserve-3d;transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform 760ms var(--spring)}
.pass3d.drag .pass-in{transition:none}
/* No filters inside the 3D card: WebKit draws a filtered layer flat and shows the back face mirrored. */
.pf{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:22px;box-shadow:0 18px 30px rgba(0,0,0,.16),0 2px 4px rgba(0,0,0,.08)}
:root[data-theme=dark] .pf{box-shadow:0 20px 36px rgba(0,0,0,.55)}
.pf img{width:100%;height:100%;pointer-events:none;user-select:none;-webkit-user-drag:none}
.pf-back{transform:rotateY(180deg)}
.pass-in:not([data-side=back]) .pf-back,.pass-in[data-side=back] .pf-front{visibility:hidden}
.pass-ctl{display:flex;gap:.625rem;flex-wrap:wrap;justify-content:center}
.poster-dlg{width:min(26rem,calc(100vw - 2rem));max-height:calc(100dvh - 2rem);padding:1.25rem;border:1px solid var(--line);border-radius:22px;background:var(--paper);color:var(--ink);box-shadow:var(--shadow);overflow:auto;text-align:center}
.poster-dlg::backdrop{background:color-mix(in srgb,var(--paper) 40%,rgba(0,0,0,.6))}
.poster-dlg[open]{animation:msg 520ms var(--spring)}
.poster-dlg figure{margin:0;overflow:hidden;border:1px solid var(--line);border-radius:14px}
.poster-dlg img{width:100%}
.poster-dlg p{display:flex;gap:.5rem;align-items:baseline;justify-content:center;margin:1rem 0;color:var(--muted);font-size:.9375rem;text-wrap:pretty}
.poster-dlg .mini{margin:0;flex:none}

/* Ask: a small chat that types itself */
.chat{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper);box-shadow:var(--shadow);overflow:hidden}
.chat-log{display:flex;flex-direction:column;justify-content:flex-end;gap:.625rem;height:22rem;padding:1.25rem;overflow:hidden;background:var(--surface)}
.msg{max-width:84%;padding:.625rem .875rem;border-radius:16px;font-size:.9375rem;line-height:1.6;text-wrap:pretty;animation:msg 420ms var(--spring) both}
.msg.me{align-self:flex-end;border-bottom-right-radius:5px;background:var(--ink);color:var(--paper)}
.msg.bot{align-self:flex-start;border:1px solid var(--line);border-top-left-radius:5px;background:var(--paper)}
.msg.bot b{display:block;margin-bottom:.125rem;color:var(--red-text);font-size:.75rem;font-weight:650;letter-spacing:.04em}
.msg .src{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;margin-top:.5rem}
.msg .src a{padding:.125rem .625rem;border-radius:999px;background:var(--red-soft);color:var(--red-text);font-size:.8125rem;font-weight:600;text-decoration:none}
.msg .src small{color:var(--muted);font-size:.75rem}
.msg.dots{display:flex;gap:4px;padding:.875rem 1rem}
.msg.dots i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:dot 1s ease-in-out infinite}
.msg.dots i:nth-child(2){animation-delay:.15s}.msg.dots i:nth-child(3){animation-delay:.3s}
.chat-input{display:flex;align-items:center;gap:.125rem;height:3.25rem;padding:0 .5rem 0 1.25rem;border-top:1px solid var(--line);font-size:.9375rem}
.chat-input span{white-space:nowrap;overflow:hidden}
.caret{width:2px;height:1.1em;background:var(--red);animation:blink 1s steps(1) infinite}
.send{display:grid;place-items:center;width:2.25rem;height:2.25rem;margin-left:auto;border-radius:12px;background:var(--line);color:var(--paper);font-weight:700;transition:background-color 200ms,transform 260ms var(--spring)}
.chat-input.ready .send{background:var(--ink)}
.chat-input.sent .send{transform:scale(.86)}
@keyframes msg{from{opacity:0;transform:translateY(10px) scale(.96)}to{opacity:1;transform:none}}
@keyframes dot{50%{transform:translateY(-4px);opacity:.5}}
@keyframes blink{50%{opacity:0}}

/* And more: a bento of small toys */
.bento{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.tile{display:flex;flex-direction:column;min-width:0;padding:1rem 1rem 1.5rem;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.tile>h3{margin:1.25rem .5rem 0}
.tile>p{margin:.5rem .5rem 0;color:var(--muted);font-size:.9375rem;text-wrap:pretty}
.toy{position:relative;display:grid;place-items:center;height:12.5rem;margin:0;padding:1rem;border:1px solid var(--line);border-radius:14px;background:var(--paper);overflow:hidden;-webkit-tap-highlight-color:transparent}
button.toy{width:100%;cursor:pointer}
/* Each tile holds a small working copy of the Hub component, drawn with the Hub's own tokens:
   square corners, the sans face, and its red / green / gold. */
.hub{--h-paper:#fff;--h-ink:#171717;--h-muted:#666;--h-line:#e5e5e5;--h-red:#b84f42;--h-red-text:#b84f42;--h-green:#277158;--h-gold:#a57218;--h-on:#fff;--heart:#f0445a;display:block;height:15rem;padding:16px;background:var(--h-paper);color:var(--h-ink);font-family:var(--sans);font-size:14px;line-height:1.5;text-align:left;place-items:normal}
:root[data-theme=dark] .hub{--h-paper:#111;--h-ink:#ededed;--h-muted:#a1a1a1;--h-line:#262626;--h-red:#9b473c;--h-red-text:#ec9688;--h-green:#7fc4a8;--h-gold:#e0b867;--h-on:#fbf1ef}
.hub button{font:inherit;color:inherit;-webkit-tap-highlight-color:transparent}
.hub button:focus-visible,.hub [tabindex]:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.hub [data-tone]{--tone:var(--h-red)}.hub [data-tone=green]{--tone:var(--h-green)}.hub [data-tone=gold]{--tone:var(--h-gold)}
.hub .bump{animation:h-bump 450ms cubic-bezier(.3,1.6,.5,1)}
@keyframes h-bump{40%{transform:scale(1.22)}}

/* 活动现场 */
.hl-row{display:flex;align-items:last baseline;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--h-line)}
.hl-meta{display:flex;align-items:center;gap:8px;margin:0 0 4px;color:var(--h-muted);font-size:12px;white-space:nowrap}
.hl-chip{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 8px;border:1px solid color-mix(in srgb,var(--h-green) 50%,var(--h-line));color:var(--h-green)}
.hl-chip::before{content:'';width:6px;height:6px;border-radius:50%;background:currentColor;animation:hl-pulse 1.6s ease-in-out infinite}
@keyframes hl-pulse{50%{opacity:.3}}
.hl-row h4{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.hl-count{display:flex;align-items:baseline;gap:4px;margin:0;color:var(--h-muted);font-size:12px;white-space:nowrap}
.hl-count strong{display:inline-block;color:var(--h-ink);font-size:24px;line-height:1;font-variant-numeric:tabular-nums}
.hl-draw{position:relative;display:block;width:100%;margin-top:14px;padding:13px 14px 11px;border:1px solid var(--h-line);border-radius:0;background:var(--h-paper);text-align:left;cursor:pointer;transition:border-color 200ms,transform 200ms}
.hl-draw::before{content:'';position:absolute;top:-1px;left:-1px;right:-1px;height:3px;background:var(--h-red)}
.hl-draw:hover{border-color:color-mix(in srgb,var(--h-ink) 36%,transparent)}
.hl-draw:active{transform:scale(.985)}
.hl-kicker{display:block;color:var(--h-red-text);font-size:12px;font-weight:700;letter-spacing:.03em}
.hl-prize{display:block;margin-top:2px;font-size:17px;font-weight:700;letter-spacing:-.02em;line-height:1.3}
.hl-names,.hl-reel{display:flex;align-items:center;gap:6px;height:30px;margin-top:9px}
.hl-reel{display:none}
.hl-draw.is-rolling .hl-reel{display:flex}.hl-draw.is-rolling .hl-names{display:none}
.hl-reel i{width:8px;height:8px;background:var(--h-red);animation:hl-dot 1.2s ease-in-out infinite}
.hl-reel i:nth-child(2){animation-delay:.15s}.hl-reel i:nth-child(3){animation-delay:.3s}
@keyframes hl-dot{0%,100%{opacity:.25}50%{opacity:1}}
.hl-names span{padding:3px 10px;border:1px solid var(--h-line);font-size:14px;font-weight:700;white-space:nowrap;animation:hl-pop .42s cubic-bezier(.22,1,.36,1) both}
.hl-names span.is-mine{background:var(--h-red);border-color:var(--h-red-text);color:var(--h-on)}
@keyframes hl-pop{from{opacity:0;transform:translateY(6px) scale(.92)}}
.hl-note{display:block;margin-top:6px;overflow:hidden;color:var(--h-muted);font-size:12px;white-space:nowrap;text-overflow:ellipsis}
.hl-draw.is-mine .hl-note{color:var(--h-red-text);font-weight:700}

/* 伙伴卡片 */
.cards-hub{padding:0;overflow:hidden}
.hc-stack{position:relative;display:block;width:100%;height:100%;padding:0;border:0;background:none;cursor:pointer}
.hc-paper{position:absolute;left:50%;top:50%;display:flex;flex-direction:column;width:min(212px,72%);height:178px;padding:18px 16px 14px;overflow:hidden;border:1px solid var(--h-line);border-radius:12px;background:var(--h-paper);box-shadow:0 12px 24px rgba(0,0,0,.07);text-align:left;transition:transform 560ms cubic-bezier(.22,1,.36,1),opacity 260ms}
:root[data-theme=dark] .hc-paper{box-shadow:0 14px 28px rgba(0,0,0,.4)}
.hc-paper .card-motif{position:absolute;top:0;right:0;width:122px;height:auto;color:var(--tone);opacity:.75;pointer-events:none}
.hc-emblem{position:relative;display:block;height:26px;color:var(--tone)}
.hc-paper b{position:relative;margin:16px 0 4px;font-size:17px;font-weight:700}
.hc-paper small{position:relative;color:var(--h-muted);font-size:12px;line-height:1.7}
.hc-paper em{position:relative;margin-top:auto;color:var(--tone);font-size:12px;font-style:normal}
.hc-paper[data-at="0"]{z-index:3;transform:translate(-50%,-50%) rotate(-2deg)}
.hc-paper[data-at="1"]{z-index:2;transform:translate(calc(-50% + 20px),calc(-50% - 4px)) rotate(3deg)}
.hc-paper[data-at="2"]{z-index:1;transform:translate(calc(-50% - 18px),calc(-50% - 8px)) rotate(-5deg)}
.hc-paper[data-at="0"].out{transform:translate(-50%,-125%) rotate(6deg);opacity:0}
@media(hover:hover){.hc-stack:hover .hc-paper[data-at="0"]{transform:translate(-50%,calc(-50% - 6px)) rotate(0)}}

/* 活动照片 */
.photo-hub{padding:0;overflow:hidden}
.hp-tile{position:relative;display:block;height:100%;overflow:hidden;background:var(--h-line);cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}
.hp-tile img{display:block;width:100%;height:100%;object-fit:cover;object-position:50% 45%;transition:transform 900ms cubic-bezier(.22,1,.36,1),filter 200ms}
@media(hover:hover){.hp-tile:hover img{transform:scale(1.03);filter:brightness(1.05)}}
.hp-adopted{position:absolute;left:10px;top:10px;padding:3px 7px;border-radius:3px;background:rgba(0,0,0,.55);color:#fff;font-size:11px;line-height:1.2;letter-spacing:.02em}
.hp-tip{position:absolute;right:10px;top:10px;padding:3px 9px;border-radius:999px;background:rgba(0,0,0,.62);color:#fff;font-size:11px;line-height:1.4;transition:opacity 300ms,transform 300ms}
.hp-tip.gone{opacity:0;transform:translateY(-4px)}
.hp-like{position:absolute;right:10px;bottom:10px;display:inline-flex;align-items:center;gap:3px;padding:3px 7px;border-radius:999px;background:rgba(0,0,0,.45);color:#fff;font-size:12px;line-height:1;font-variant-numeric:tabular-nums}
.hp-like svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:2}
.hp-like.is-mine svg{fill:var(--heart);stroke:var(--heart)}
.hp-like b{font-weight:600}
.hp-pop{position:absolute;width:72px;height:72px;margin:-36px 0 0 -36px;pointer-events:none;animation:hp-pop 900ms cubic-bezier(.2,.9,.3,1.2) forwards}
.hp-pop svg{width:100%;height:100%;fill:var(--heart);stroke:#fff;stroke-width:1.4;filter:drop-shadow(0 6px 12px rgba(0,0,0,.28))}
@keyframes hp-pop{0%{opacity:0;transform:scale(.3)}25%{opacity:1;transform:scale(1.12)}45%{transform:scale(.95)}75%{opacity:1;transform:translateY(-6px) scale(1)}100%{opacity:0;transform:translateY(-22px) scale(1.04)}}

/* 问卷 */
.survey-hub{position:relative;display:flex;flex-direction:column;justify-content:center;padding:18px 20px 14px;overflow:hidden}
.hs-bar{position:absolute;left:0;right:0;top:0;height:3px;background:var(--h-line)}
.hs-bar i{display:block;width:33.4%;height:100%;background:var(--h-red);transition:width 520ms cubic-bezier(.22,1,.36,1)}
.hs-step{margin:0;color:var(--h-muted);font-size:12px;font-variant-numeric:tabular-nums}
.hs-q{margin:4px 0 10px;font-size:16px;font-weight:650;letter-spacing:-.01em}
.hs-scale{display:grid;grid-template-columns:repeat(5,40px);gap:2px;width:max-content;margin-left:-4px}
.hs-pip{display:grid;place-items:center;height:40px;padding:0;border:0;background:none;cursor:pointer}
.hs-pip svg{width:30px;height:30px;fill:transparent;stroke:color-mix(in srgb,var(--h-ink) 40%,transparent);stroke-width:1.4;stroke-linejoin:round;transition:fill 160ms,stroke 160ms,transform 220ms cubic-bezier(.22,1,.36,1)}
.hs-pip.is-on svg{fill:var(--h-ink);stroke:var(--h-ink)}
.hs-pip.pop svg{animation:hs-pop 420ms cubic-bezier(.3,1.6,.5,1) both;animation-delay:calc(var(--i,0) * 50ms)}
@keyframes hs-pop{40%{transform:scale(1.22)}}
@media(hover:hover){.hs-scale:hover .hs-pip svg{fill:color-mix(in srgb,var(--h-ink) 45%,transparent);stroke:var(--h-ink)}.hs-scale .hs-pip:hover~.hs-pip svg{fill:transparent;stroke:color-mix(in srgb,var(--h-ink) 40%,transparent)}}
.hs-ends{display:flex;justify-content:space-between;width:204px;margin:4px 0 0;color:var(--h-muted);font-size:11.5px}
.hs-pick{min-height:20px;margin:8px 0 0;color:var(--h-red-text);font-size:13px;font-weight:650}

/* 信箱 */
.inbox-hub{position:relative;padding:12px 16px;overflow:hidden}
.inbox-hub p{margin:0}
.hi-bar{display:flex;justify-content:flex-end;gap:8px;padding-bottom:10px;border-bottom:1px solid var(--h-line)}
.hi-ring{position:relative;display:inline-grid;place-items:center;width:38px;height:38px;padding:0;border:1px solid var(--h-line);border-radius:50%;background:none;color:var(--h-ink);font-size:14px;transition:border-color 200ms}
.hi-ring svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.hi-toggle{cursor:pointer}
.hi-toggle:hover,.hi-toggle[aria-expanded=true]{border-color:var(--h-ink)}
.hi-avatar{color:var(--h-red-text);font-weight:600}
.hi-count{position:absolute;top:-4px;right:-5px;min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:var(--h-red);color:var(--h-on);font-size:11px;font-weight:700;line-height:17px;text-align:center;font-variant-numeric:tabular-nums;box-shadow:0 0 0 2px var(--h-paper)}
.hi-page{display:grid;gap:10px;padding-top:16px}
.hi-page i{display:block;height:10px;background:color-mix(in srgb,var(--h-ink) 7%,transparent)}
.hi-page i:nth-child(1){width:46%;height:16px}.hi-page i:nth-child(2){width:88%}.hi-page i:nth-child(3){width:70%}
.hi-panel{position:absolute;left:16px;right:16px;top:66px;border:1px solid var(--h-line);background:var(--h-paper);box-shadow:0 12px 32px -12px color-mix(in srgb,var(--h-ink) 28%,transparent);animation:hi-in 180ms cubic-bezier(.22,1,.36,1)}
@keyframes hi-in{from{opacity:0;transform:translateY(-4px)}}
.hi-head{display:flex;align-items:center;justify-content:space-between;min-height:38px;padding:0 8px 0 12px;border-bottom:1px solid var(--h-line)}
.hi-head b{font-size:13.5px}
.hi-all{min-height:26px;padding:0 10px;border:1px solid var(--h-line);border-radius:0;background:none;font-size:12px !important;cursor:pointer;transition:border-color 160ms,color 160ms}
.hi-all:hover{border-color:var(--h-red-text);color:var(--h-red-text)}
.hi-sec{display:flex;align-items:baseline;gap:8px;margin:0;padding:7px 12px 1px;color:var(--h-muted);font-size:12px;font-weight:600}
.hi-sec span{color:var(--h-red-text);font-variant-numeric:tabular-nums}
.hi-panel ul{margin:0;padding:0 0 3px;list-style:none}
.hi-panel li button{display:flex;align-items:center;gap:8px;width:100%;padding:4px 12px;border:0;background:none;font-size:12.5px;text-align:left;cursor:pointer;transition:background-color 160ms}
.hi-panel li button:hover{background:color-mix(in srgb,var(--h-ink) 5%,transparent)}
.hi-panel li i{flex:none;width:7px;height:7px;border-radius:50%;background:var(--tone);transition:transform 220ms}
.hi-panel li span{flex:1;min-width:0;overflow:hidden;font-weight:600;white-space:nowrap;text-overflow:ellipsis}
.hi-panel li time{flex:none;color:var(--h-muted);font-size:11.5px}
.hi-panel li .is-read i{transform:scale(0)}
.hi-panel li .is-read span{color:var(--h-muted);font-weight:400}
.hi-done{margin:0;padding:18px 12px 22px;color:var(--h-muted);font-size:12.5px;text-align:center;animation:hi-in 260ms cubic-bezier(.22,1,.36,1)}

/* 新手引导 */
.tour-hub{display:grid;place-items:center;padding:14px;background:color-mix(in srgb,#0a0a0a 58%,var(--h-paper))}
.ht-card{width:100%;padding:13px 16px 4px;border:1px solid var(--h-line);border-top:3px solid var(--h-red);background:var(--h-paper);box-shadow:0 18px 48px rgba(0,0,0,.24);opacity:0;translate:0 8px;scale:.98;transition:opacity 160ms,translate 240ms cubic-bezier(.22,1,.36,1),scale 240ms cubic-bezier(.22,1,.36,1)}
.ht-card.is-back{translate:0 -8px}
.ht-card.is-in{opacity:1;translate:0 0;scale:1}
.ht-guide{display:flex;align-items:center;gap:10px;margin:0 0 9px}
.ht-face{display:inline-flex;align-items:center;flex:none;height:30px;padding:0 10px;background:color-mix(in srgb,var(--h-red) 9%,var(--h-paper));color:var(--h-red-text);font-size:15px;font-weight:600;line-height:1;white-space:pre}
.ht-who{display:grid;line-height:1.3}
.ht-who strong{font-size:13px;font-weight:650}
.ht-who small{color:var(--h-red-text);font-size:11px;font-weight:600;letter-spacing:.04em}
.ht-card h4,.ht-card p{opacity:0;translate:0 6px;transition:opacity 220ms,translate 260ms cubic-bezier(.22,1,.36,1)}
.ht-card.is-in h4{opacity:1;translate:0 0;transition-delay:60ms}
.ht-card.is-in p{opacity:1;translate:0 0;transition-delay:130ms}
.ht-card h4{margin:0 0 3px;font-size:16px;line-height:1.35;letter-spacing:-.02em}
.ht-card p{min-height:3.2em;margin:0;color:var(--h-muted);font-size:12.5px;line-height:1.6;text-wrap:pretty}
.ht-dots{display:flex;margin:2px -6px -4px}
.ht-dot{position:relative;width:20px;height:24px;padding:0;border:0;background:none;cursor:pointer}
.ht-dot::before{content:'';position:absolute;left:6px;top:9px;width:8px;height:6px;background:var(--h-line);transition:transform 220ms,background-color 220ms}
.ht-dot.is-done::before{background:color-mix(in srgb,var(--h-red) 42%,transparent)}
.ht-dot[aria-current=step]::before{background:var(--h-red);transform:scaleX(2);transform-origin:left}
.ht-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:2px 0 8px}
.ht-actions span{display:flex;gap:6px}
.ht-actions button{min-height:32px;padding:0 13px;border-radius:0;font-size:12.5px;cursor:pointer;transition:transform 120ms}
.ht-actions button:active{transform:scale(.96)}
.ht-skip{padding:0 !important;border:0;background:none;color:var(--h-muted) !important}
.ht-back{border:1px solid var(--h-line);background:var(--h-paper)}
.ht-next{border:0;background:var(--h-red);color:var(--h-on) !important;font-weight:650}
@media(prefers-reduced-motion:reduce){.hub *,.hub *::before{animation:none !important;transition:none !important}}
.bento .rv.in:nth-child(3n+2){transition-delay:90ms}.bento .rv.in:nth-child(3n){transition-delay:180ms}
@media(max-width:900px){.bento{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.bento{grid-template-columns:minmax(0,1fr)}}
@media(max-width:560px){.chat-log{height:20rem}}

/* Downloads */
.dl-ver{margin:0 0 .75rem;color:var(--muted);font-size:.875rem;font-variant-numeric:tabular-nums}
.dl{display:grid;gap:.625rem}
.row{display:grid;grid-template-columns:1fr auto auto;gap:1.25rem;align-items:center;padding:1rem 1rem 1rem 1.25rem;border:1px solid var(--line);border-radius:var(--r);background:var(--paper);transition:border-color 200ms,transform 260ms var(--spring)}
.row:hover{border-color:color-mix(in srgb,var(--ink) 30%,transparent);transform:translateX(2px)}
.row[data-detected=true]{border-color:var(--red-text);background:var(--red-soft)}
.row b{font-weight:650}
.row small{display:block;color:var(--muted);font-size:.875rem;line-height:1.5}
.row .size{color:var(--muted);font:.8125rem var(--mono)}
.row .sz{display:none}
.badge{margin-left:.5rem;padding:.125rem .5rem;border-radius:999px;background:var(--red);color:var(--on-accent);font-size:.6875rem;font-weight:650;vertical-align:2px}
.empty{display:flex;align-items:center;gap:.75rem;padding:1.25rem;border:1px dashed var(--line);border-radius:var(--r);color:var(--muted)}
.empty .mini{margin:0}
.empty .chip{margin-left:auto}
.first{margin:1.5rem 0 0;padding:1.125rem 1.25rem;border:1px solid var(--line);border-radius:var(--r)}
.first h3{margin:0 0 .5rem;font-size:.9375rem}
.first ul{margin:0;padding:0 0 0 1.1em;color:var(--muted);font-size:.875rem;line-height:1.7}
.first li+li{margin-top:.25rem}
/* Phones next: shown quietly, in grey, until they ship. */
.soon{margin:2.5rem 0 0}
.soon-h{margin:0 0 .75rem;color:var(--muted);font-size:.875rem}
.soon ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.625rem;margin:0;padding:0;list-style:none}
.soon li{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1.375rem .75rem 1.25rem;border:1px dashed var(--line);border-radius:var(--r);color:var(--muted);text-align:center}
.soon svg{width:1.75rem;height:1.75rem;fill:currentColor;opacity:.55}
.soon b{font-weight:600;font-size:.9375rem}
.soon small{padding:.1875rem .5rem;border-radius:999px;background:color-mix(in srgb,var(--muted) 12%,transparent);font:500 .6875rem/1.2 var(--mono);letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
.foot-note{margin:1.25rem 0 0;color:var(--muted);font-size:.875rem}

.foot{margin-top:clamp(5rem,12vw,9rem);padding:2rem 0;border-top:1px solid var(--line);color:var(--muted);font-size:.875rem}
.foot .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.foot a{display:inline-block;padding:.75rem .125rem;margin:-.75rem 0}

[hidden]{display:none!important}

/* Opening sequence (once, on load) */
.js .intro,.js .hero-shot,.js .top{opacity:0}
.js .hero h1 .ln>span{transform:translateY(105%)}
.ready .top{opacity:1;transition:opacity 600ms var(--ease)}
.ready .hero-guide{animation:pop 700ms var(--spring) 120ms both}
.ready .hero h1 .ln>span{transform:none;transition:transform 900ms var(--ease)}
.ready .hero h1 .ln:nth-child(1)>span{transition-delay:220ms}
.ready .hero h1 .ln:nth-child(2)>span{transition-delay:320ms}
.ready .lede.intro,.ready .cta.intro{animation:rise 800ms var(--ease) both}
.ready .lede.intro{animation-delay:480ms}.ready .cta.intro{animation-delay:580ms}
.ready .hero-shot{opacity:1;transition:opacity 900ms var(--ease) 600ms}
.ready .st{animation:stin 900ms var(--spring) both,bob 6s ease-in-out 900ms infinite}
.ready .st2{animation-delay:700ms,-2s}.ready .st3{animation-delay:800ms,-4s}.ready .st4{animation-delay:900ms,-1s}.ready .st5{animation-delay:1000ms,-3s}.ready .st1{animation-delay:600ms,0s}
@keyframes pop{from{opacity:0;transform:scale(.6) translateY(12px)}to{opacity:1;transform:none}}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@keyframes stin{from{opacity:0;transform:scale(.3)}to{opacity:.55;transform:none}}

/* Reveal on scroll */
.js .rv{opacity:0;transform:translateY(28px)}
.js .rv.in{opacity:1;transform:none;transition:opacity 800ms var(--ease),transform 900ms var(--ease)}
.js .card.rv.in{transition:translate 320ms var(--spring),box-shadow 320ms var(--ease),opacity 800ms var(--ease),transform 900ms var(--ease)}
.three .rv.in:nth-child(2){transition-delay:0ms,0ms,90ms,90ms}.three .rv.in:nth-child(3){transition-delay:0ms,0ms,180ms,180ms}

@media(max-width:900px){
  .navlink{display:none}
  .three{grid-template-columns:minmax(0,1fr)}
  .split{grid-template-columns:minmax(0,1fr)}
  .story-grid{grid-template-columns:1fr;gap:0}
  .stage{top:4.5rem;z-index:2;background:var(--paper);padding:.5rem 0 .25rem}
  .stage{width:auto;justify-self:stretch}
  .stage>.frame{width:min(100%,calc((52svh - 2.25rem) * 1.6));margin-inline:auto}
  .stage-guide{display:none}
  .steps{padding:4vh 0 10vh}
  .step{min-height:max(36svh,11rem)}
  .st2,.st4{display:none}
}
@media(max-width:560px){
  .brand small{display:none}
  .top .btn-sm{display:none}
  .seg button{min-width:1.75rem;padding:0 .375rem}
  .pair{padding-bottom:0}.hub.webcard{position:relative;right:auto;width:auto;margin:2.25rem .5rem 0}
  .row{grid-template-columns:1fr auto}.row .size{display:none}.row .sz{display:inline}
  .soon li{padding:1.125rem .375rem 1rem}.soon small{padding-inline:.375rem;letter-spacing:.02em}
  .chrome span{display:none}
  .face{font-size:1rem;padding:0 .625rem}
  .hero-guide{justify-content:flex-start}
  .st1,.st3,.st5{display:none}
}
/* Touch: every header control gets at least a 44px hit area; nothing changes under a mouse. */
@media(pointer:coarse){
  .brand,.navlink,.btn-sm,.chip{position:relative}
  .brand::after,.navlink::after,.btn-sm::after,.chip::after{content:"";position:absolute;inset:-7px -4px}
  .navlink::after{inset:-3px 0}
  .btn-sm::after{inset:-5px 0}
  .chip::after{inset:-3px 0}
  .seg button{min-width:44px}
}
@media(max-height:520px){
  .stage{position:relative;top:auto!important}
  .step{opacity:1;transform:none;min-height:0;padding:2rem 0}
  .steps{padding:1rem 0 0}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .intro,.js .hero-shot,.js .top,.js .rv{opacity:1;transform:none}
  .js .hero h1 .ln>span{transform:none}
  .st{opacity:.55}
  .step{opacity:1;transform:none}
  .hero-shot,.zoom{transform:none!important}
}

/* Chinese body text sits on the character grid: lines run the full measure, ends align. */
html:lang(zh) p,html:lang(zh) li,html:lang(zh) .msg,html:lang(zh) .bubble span{text-align:justify;text-wrap:wrap;line-break:strict;word-break:normal;overflow-wrap:anywhere}
html:lang(zh) .hero .lede{text-align:justify;text-align-last:center}
/* The Hub demos and the short tile notes keep plain wrapping: justified, they break chips and counts apart in narrow tiles. */
html:lang(zh) .hub p,html:lang(zh) .tile>p{text-align:start;overflow-wrap:normal;line-break:auto}