@font-face{font-family:General Sans;src:url('/fonts/GeneralSans-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:General Sans;src:url('/fonts/GeneralSans-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:General Sans;src:url('/fonts/GeneralSans-700.woff2') format('woff2');font-weight:700;font-display:swap}
:root{
  --sans:'General Sans','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;--mono:'SF Mono',Menlo,Consolas,monospace;
  --pad:clamp(20px,5.5vw,96px);
  /* 夜：老榆木在暗处 */
  --bg:var(--on-ink);--ink:#efe6d6;--ink-rgb:239,230,214;--soft:#b3a48f;--dim:#7a6d5c;
  --wood:#c9a77f;--wood-rgb:201,167,127;--wood-hi:#ecd9bb;
  --cool:#93d3d8;--cool-rgb:147,211,216;--cool-ink:#c9eef0;--cool-soft-rgb:214,236,236;
  --shade-rgb:0,0,0;--on-ink:#0f0c09;--cap:#f3ece0;--glow-rgb:220,190,150;
  --btn-a:#efe3d0;--btn-b:#c1a07a;--flash:#f4ead8;--bubble:rgba(38,34,30,.72);--panel:rgba(12,10,8,.78);
  --line:rgba(201,167,127,.18)
}
[data-theme="day"]{
  /* 日：原木板 墨线 */
  --bg:#ebe3d5;--ink:#2a2119;--ink-rgb:42,33,25;--soft:#6a5b4a;--dim:#998a76;
  --wood:#8a6a4a;--wood-rgb:138,106,74;--wood-hi:#5a4330;
  --cool:#2e7a80;--cool-rgb:46,122,128;--cool-ink:#1f5d63;--cool-soft-rgb:46,98,104;
  --shade-rgb:235,227,213;--on-ink:#f4eee4;--cap:#241b14;--glow-rgb:255,255,255;
  --btn-a:#5a4330;--btn-b:#2f241b;--flash:#fff;--bubble:rgba(255,250,242,.78);--panel:rgba(244,238,228,.84);
  --line:rgba(138,106,74,.22)
}
html,body,.top,footer,.q,.seg button,.round-link,.download-panel{transition:background-color .5s,color .5s,border-color .5s}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;font-family:var(--sans);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;cursor:pointer;background:transparent}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--wood);outline-offset:4px}
[hidden]{display:none!important}
.skip{position:fixed;top:-100px;left:20px;z-index:50;padding:12px;background:#111}.skip:focus{top:10px}

#gl{position:fixed;inset:0;width:100vw;height:100vh;height:100lvh;display:block;z-index:0}
#ov{position:fixed;inset:0;pointer-events:none;z-index:1;font-family:"PingFang SC","Hiragino Sans GB","Noto Sans SC",sans-serif;color:var(--cap);--u:1px}

/* 顶栏 */
.top{position:fixed;top:0;left:0;right:0;height:72px;padding:0 var(--pad);display:flex;justify-content:space-between;align-items:center;z-index:20;background:linear-gradient(rgba(var(--shade-rgb),.8),rgba(var(--shade-rgb),0));backdrop-filter:blur(2px)}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:.07em;font-size:15px}
.brand-mark{width:26px;height:26px}
.brand-ai{font-size:.62em;margin-left:5px;color:var(--soft);font-weight:500}
nav{display:flex;gap:26px;align-items:center;font-size:13px;color:var(--soft)}
nav a:hover{color:var(--ink)}
.theme-toggle{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:30px;border:1px solid rgba(var(--ink-rgb),.16);font-size:12px;color:var(--soft)}
.theme-toggle svg{width:14px;height:14px}
.theme-toggle:hover{color:var(--ink)}
.nav-download{border:1px solid rgba(var(--wood-rgb),.45);color:var(--ink);padding:9px 16px;border-radius:30px}

/* 首屏 */
.hero{height:175vh;position:relative;z-index:2}
.hero-pin{position:sticky;top:0;height:100vh;height:100svh;min-height:620px;padding:72px var(--pad) 0;display:flex;flex-direction:column}
.hero-topline{display:flex;justify-content:space-between;font-size:11px;letter-spacing:.06em;color:var(--dim);padding-top:14px}
.edition{font-family:var(--mono);font-size:10px;letter-spacing:.16em}
.stage{flex:1 1 auto;min-height:0;position:relative;margin:2vh -1vw 0}
.stage canvas{position:absolute;inset:0;display:block}
.hero-bottom{display:grid;grid-template-columns:1.1fr 1fr;gap:6%;align-items:end;padding:0 0 4vh}
h1{margin:0;font-size:clamp(34px,4.4vw,64px);line-height:1.18;font-weight:600;letter-spacing:.02em}
h1 span{color:var(--wood)}
.hero-description p{margin:0 0 14px;font-size:15px;line-height:1.8;color:var(--ink)}
.hero-description .sub{font-size:13px;color:var(--soft);line-height:1.8}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.round-link{display:inline-flex;align-items:center;height:42px;padding:0 20px;border-radius:30px;border:1px solid rgba(var(--ink-rgb),.25);font-size:13px}
.round-link.primary{background:var(--ink);color:var(--on-ink);border-color:var(--ink);font-weight:600}
.round-link:hover{border-color:var(--wood)}
.hero-foot{display:flex;justify-content:space-between;font-size:11px;color:var(--dim);padding:0 0 22px;letter-spacing:.06em}

/* 故事段只占滚动的长度 画面全在背后的画布上 */
.story{height:1000vh;position:relative;z-index:2}
.sr-story{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.morph{height:150vh;position:relative;z-index:2}

/* 问它一句 */
.try{height:230vh;position:relative;z-index:3}
.try-pin{position:sticky;top:0;height:100vh;height:100svh;padding:72px var(--pad) 0;display:flex;align-items:center;pointer-events:none}
.try-pin::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(var(--shade-rgb),.72) 0%,rgba(var(--shade-rgb),.35) 32%,rgba(var(--shade-rgb),0) 52%);pointer-events:none}
.try-panel{position:relative;width:min(380px,90vw);pointer-events:auto}
.eyebrow{margin:0 0 12px;font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--wood)}
.try h2,.get h2{margin:0 0 14px;font-size:clamp(30px,3.2vw,46px);line-height:1.2;font-weight:600}
.try h2{white-space:nowrap;text-shadow:0 2px 30px rgba(var(--shade-rgb),.8)}
.try-intro{margin:0 0 26px;color:var(--soft);font-size:14px;line-height:1.8}
.questions{display:flex;flex-direction:column;border-top:1px solid rgba(var(--ink-rgb),.12)}
.q{position:relative;display:flex;align-items:baseline;gap:14px;text-align:left;padding:16px 0;border-bottom:1px solid rgba(var(--ink-rgb),.12);font-size:16px;color:rgba(var(--ink-rgb),.78);transition:color .25s,padding .3s}
.q i{font-style:normal;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--dim);transition:color .25s}
.q::before{content:'';position:absolute;left:0;top:50%;width:0;height:1px;background:var(--cyan);transition:width .35s}
.q:hover{color:var(--ink)}
.q[aria-pressed="true"]{color:var(--cool-ink);padding-left:34px}
.q[aria-pressed="true"]::before{width:22px}
.q[aria-pressed="true"] i{color:var(--cyan)}
.try-note{margin:16px 0 0;font-size:11px;color:var(--dim);letter-spacing:.04em}
.answer-card{position:fixed;left:0;top:0;z-index:4;width:300px;padding:2px 0 0;pointer-events:none;color:var(--cap)}
.answer-card::before{content:'';position:absolute;inset:-26px -40px -26px -30px;z-index:-1;background:rgba(var(--shade-rgb),.82);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border-radius:24px;-webkit-mask-image:radial-gradient(ellipse 70% 72% at 45% 50%,#000 58%,transparent 100%);mask-image:radial-gradient(ellipse 70% 72% at 45% 50%,#000 58%,transparent 100%)}
.answer-card .h{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--cyan);margin-bottom:10px;white-space:nowrap}
.answer-card .row{display:flex;align-items:baseline;gap:12px;margin:0 0 6px}
.answer-card .k{flex:0 0 4.6em;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--cool-ink);white-space:nowrap}
.answer-card .v{font-size:15px;font-weight:500;line-height:1.5;text-shadow:0 1px 14px rgba(var(--shade-rgb),.95),0 0 3px rgba(var(--shade-rgb),1)}
.answer-card .src{margin-top:8px;font-family:var(--mono);font-size:10px;color:var(--soft)}
#leader{position:fixed;inset:0;width:100vw;height:100vh;overflow:visible;pointer-events:none}
#leader path{fill:none;stroke:rgba(var(--cool-rgb),.85);stroke-width:1}
#leader circle{fill:var(--cool-ink)}
#trylabs .lab{color:var(--cool-ink);font-weight:600;text-shadow:0 0 6px rgba(var(--shade-rgb),1),0 0 2px rgba(var(--shade-rgb),1),0 0 12px rgba(var(--shade-rgb),.9)}

/* 发布片：白天像直接画在页面上 夜里是一张发暖光的版画 */
.film{position:relative;z-index:3;padding:22vh var(--pad) 20vh;background:linear-gradient(rgba(var(--shade-rgb),0),var(--bg) 16vh,var(--bg) calc(100% - 16vh),rgba(var(--shade-rgb),0))}
.film-inner{max-width:min(1240px,112vh);margin:0 auto}
.film .eyebrow{text-align:center;margin-bottom:26px}
.film-frame{position:relative;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#ebe3d5;box-shadow:0 40px 120px rgba(0,0,0,.55),0 0 0 1px rgba(var(--wood-rgb),.22)}
.film-frame video{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover;cursor:pointer}
[data-theme="day"] .film-frame{border-radius:0;box-shadow:none;background:transparent;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 11%,#000 89%,transparent),linear-gradient(transparent,#000 12%,#000 88%,transparent);-webkit-mask-composite:source-in;
  mask-image:linear-gradient(90deg,transparent,#000 11%,#000 89%,transparent),linear-gradient(transparent,#000 12%,#000 88%,transparent);mask-composite:intersect}
[data-theme="day"] .film-frame video{filter:brightness(1.0065)} /* 视频里的纸比页面底色暗一个多色阶 补回来 */
.film-ctrl{display:flex;justify-content:center;gap:12px;margin-top:22px}
.film-ctrl .round-link{height:36px;padding:0 16px;font-size:12px;color:var(--soft)}
.film-ctrl .round-link[aria-pressed="true"]{color:var(--ink);border-color:var(--wood)}

/* 下载 */
.get{position:relative;z-index:3;min-height:100vh;padding:120px var(--pad) 80px;display:flex;align-items:center}
.get-inner{width:100%;display:grid;grid-template-columns:1fr minmax(320px,440px);column-gap:6%;row-gap:28px;align-items:center}
.get-heading{align-self:end;padding-bottom:40px}
.get-heading p:not(.eyebrow){color:var(--soft);font-size:14px;line-height:1.85;margin:0}
.download-panel{padding:26px;border-radius:22px;background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(14px)}
.release-head{display:flex;gap:14px;align-items:center;margin-bottom:20px}
.app-icon{width:56px;height:56px;border-radius:13px}
.version{display:block;font-size:22px;font-weight:600;letter-spacing:.02em}
.release-label{font-size:12px;color:var(--soft)}
.choice{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.choice-label{font-size:12px;color:var(--soft);letter-spacing:.04em}
.seg{display:flex;padding:3px;border-radius:30px;border:1px solid rgba(var(--ink-rgb),.14);background:rgba(var(--ink-rgb),.03)}
.seg button{padding:8px 14px;border-radius:30px;font-size:13px;color:var(--soft);transition:background .2s,color .2s}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--on-ink);font-weight:600}
.seg button:disabled{opacity:.35;cursor:not-allowed}
.host-note{margin:0 0 10px;font-size:12px;color:var(--wood)}
#platform-description{margin:14px 0;font-size:13px;line-height:1.75;color:var(--ink)}
.installer-peek{margin:0 0 16px;position:relative;border-radius:12px;overflow:hidden;border:1px solid rgba(var(--ink-rgb),.08);height:150px;background:#0b0b0b}
.installer-peek video{width:100%;height:100%;object-fit:cover;display:block}
.installer-peek figcaption{position:absolute;left:10px;bottom:8px;font-size:11px;color:var(--soft);letter-spacing:.06em;text-shadow:0 0 6px #000}
.download-button{display:flex;justify-content:center;align-items:center;height:50px;border-radius:30px;background:linear-gradient(135deg,var(--btn-a),var(--btn-b));color:var(--on-ink);font-weight:600;font-size:15px;box-shadow:0 0 40px rgba(var(--wood-rgb),.2)}
.download-button:hover{filter:brightness(1.06)}
.compatibility{margin:12px 0 0;font-size:11px;line-height:1.7;color:var(--dim);text-align:center}
.release{margin-top:16px;border-top:1px solid rgba(var(--ink-rgb),.07);padding-top:12px}
.release summary{cursor:pointer;font-size:12px;color:var(--soft);list-style:none}
.release summary::after{content:' +';color:var(--wood)}
.release[open] summary::after{content:' −'}
#release-details p{margin:10px 0 0;font-size:12px;line-height:1.7;color:var(--soft)}
#release-details a{display:inline-block;margin-top:12px;font-size:12px;color:var(--wood)}
.get-footnote{grid-column:1/-1;margin:26px 0 0;font-size:11px;color:var(--dim);letter-spacing:.04em}

footer{position:relative;z-index:3;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:28px var(--pad);font-size:12px;color:var(--dim);border-top:1px solid rgba(var(--ink-rgb),.06);background:var(--bg)}

/* 画布上的字和标签 来自发布片 */
.cap{position:absolute;left:0;right:0;text-align:center;font-weight:600;white-space:nowrap;letter-spacing:.08em;font-size:calc(var(--u)*56);text-shadow:0 0 calc(var(--u)*30) rgba(var(--glow-rgb),.35)}
.cap span{display:inline-block;will-change:transform,opacity,filter}
#ov.port .cap{font-size:max(21px,calc(var(--u)*54));line-height:1.45}
.bubble{position:absolute;left:50%;transform:translateX(-50%);padding:max(10px,calc(var(--u)*20)) max(16px,calc(var(--u)*34));border-radius:max(16px,calc(var(--u)*28));background:var(--bubble);border:1px solid rgba(var(--wood-rgb),.18);font-size:max(15px,calc(var(--u)*38));font-weight:500;letter-spacing:.06em;white-space:nowrap;backdrop-filter:blur(8px)}
.bubble i{position:absolute;left:calc(var(--u)*-66);top:50%;transform:translateY(-50%);width:calc(var(--u)*48);height:calc(var(--u)*48);border-radius:50%;background:linear-gradient(135deg,#6b6457,#3a362f);font-style:normal;font-size:calc(var(--u)*20);display:flex;align-items:center;justify-content:center;color:#efe6d2}
.lab{position:absolute;left:0;top:0;font-family:"SF Mono",Menlo,"PingFang SC",monospace;font-size:max(11px,calc(var(--u)*20));color:var(--wood-hi);white-space:nowrap;letter-spacing:.04em;text-shadow:0 0 calc(var(--u)*10) rgba(var(--shade-rgb),.9)}
.lab b{font-family:"PingFang SC",sans-serif;font-weight:600;color:var(--cap);margin-right:.5em;font-size:1.25em}
.lab.big{font-size:max(13px,calc(var(--u)*28))}
.lab.path{color:var(--cool-ink);font-weight:600;text-shadow:0 0 6px rgba(var(--shade-rgb),1),0 0 2px rgba(var(--shade-rgb),1)}
.lab.chip{padding:calc(var(--u)*8) calc(var(--u)*18);border-radius:calc(var(--u)*30);background:rgba(var(--cool-rgb),.14);border:1px solid rgba(var(--cool-rgb),.5);color:var(--cool-ink);font-family:"PingFang SC",sans-serif;font-size:max(13px,calc(var(--u)*26))}
#labs .card{position:absolute;left:0;top:0;width:max(260px,calc(var(--u)*540));padding:max(10px,calc(var(--u)*20)) max(14px,calc(var(--u)*30)) max(10px,calc(var(--u)*20)) max(12px,calc(var(--u)*24));border-left:1px solid rgba(var(--cool-rgb),.7);background:radial-gradient(ellipse at 20% 50%,rgba(var(--shade-rgb),.6),rgba(var(--shade-rgb),0) 72%);font-family:"PingFang SC",sans-serif;font-size:max(14px,calc(var(--u)*30));font-weight:500;line-height:1.6;color:var(--cap);text-shadow:0 2px 20px rgba(var(--shade-rgb),.9)}
#labs .card::before{content:'';position:absolute;inset:-14% -10%;z-index:-1;background:rgba(var(--shade-rgb),.8);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);-webkit-mask-image:radial-gradient(ellipse 70% 72% at 45% 50%,#000 58%,transparent 100%);mask-image:radial-gradient(ellipse 70% 72% at 45% 50%,#000 58%,transparent 100%)}
#labs .card .h{font-family:"SF Mono",Menlo,monospace;font-size:max(11px,calc(var(--u)*18));font-weight:400;color:var(--cool);letter-spacing:.06em;margin-bottom:.6em}
#labs .card .k{font-size:.55em;font-weight:600;letter-spacing:.1em;color:var(--cool-ink);margin-right:1em;vertical-align:middle}
#labs .card .src{margin-top:.7em;font-family:"SF Mono",Menlo,monospace;font-size:max(10px,calc(var(--u)*16));font-weight:400;color:rgba(var(--cool-soft-rgb),.55)}
.hud{position:absolute;font-family:"SF Mono",Menlo,"PingFang SC",monospace;font-size:max(10px,calc(var(--u)*18));letter-spacing:.14em;color:var(--soft);line-height:1.8;opacity:0}
.hud em{font-style:normal;color:var(--wood-hi);font-size:1.5em;letter-spacing:.04em}
.vig{position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(var(--shade-rgb),0) 55%,rgba(var(--shade-rgb),.55) 100%)}
.flash{position:absolute;inset:0;background:var(--flash);opacity:0;mix-blend-mode:screen}
[data-theme="day"] .flash{display:none}
[data-theme="day"] .brand-mark{filter:none}
body.no-gl #ov{display:none}

@media (max-width:820px){
  .top{height:60px}
  nav a:not(.nav-download){display:none}
  .hero-pin{padding-top:60px}
  .hero-bottom{grid-template-columns:1fr;gap:18px;padding-bottom:3vh}
  .hero-description p:first-child{display:none}
  .hero-pin{justify-content:space-between}
  .stage{margin:0 -3vw;flex:0 0 30vh}
  .hero-topline{padding-top:8px}
  .try-pin{align-items:flex-end;padding-bottom:22px}
  .try-pin::before{background:linear-gradient(0deg,rgba(var(--shade-rgb),.85) 0%,rgba(var(--shade-rgb),.5) 38%,rgba(var(--shade-rgb),0) 60%)}
  .try-panel{width:100%}
  .try h2{font-size:26px}
  .try-intro{display:none}
  .q{padding:12px 0;font-size:15px}
  .answer-card{width:calc(100vw - 48px)}
  .get{padding-top:46vh}
  .get-inner{grid-template-columns:1fr}
  .get-heading{padding-bottom:0}
  .film{padding:14vh 0 12vh;background:linear-gradient(rgba(var(--shade-rgb),0),var(--bg) 5vh,var(--bg) calc(100% - 5vh),rgba(var(--shade-rgb),0))}
  .film-frame{border-radius:0}
  footer{display:grid;grid-template-columns:1fr auto;align-items:center;row-gap:6px;padding:16px var(--pad) calc(16px + env(safe-area-inset-bottom))}
  footer>span{grid-column:1/-1;grid-row:2;font-size:11px}
  footer .brand-mark{width:22px;height:22px}
  footer .brand{font-size:13px}
}
@media (max-height:780px) and (min-width:821px){
  .get{padding-top:90px;padding-bottom:40px}
  .download-panel{padding:20px}
  .release-head{margin-bottom:12px}
  .installer-peek{height:96px;margin-bottom:12px}
  #platform-description{margin:10px 0}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}