/* oneplusone workspace — Lusion-inspired. Two fonts: Inter (self-hosted, Latin) + system Chinese (PingFang / 微软雅黑) */
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url(assets/fonts/inter-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
/* Layout: near-black canvas, white type, one electric-blue accent; rounded panels stack like Lusion's sections */
:root{
  color-scheme:dark;
  --ink:#050506;--fg:#f2f2f4;--paper:#0b0b0d;--panel:#141418;--panel-2:#1c1d22;--line:rgba(255,255,255,.12);--muted:#8d8f98;--body:#b9bbc3;
  --accent:#1a2ffb;--accent-hover:#0f1fd6;
  --radius:24px;--gutter:clamp(16px,2.6vw,40px);--max:1680px;
  --sans:"Inter","PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--fg);font-family:var(--sans);font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:clip;font-feature-settings:"ss01","cv11"}
body.is-loading{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;-webkit-tap-highlight-color:transparent;text-align:left}
button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.skip{position:fixed;left:16px;top:-100px;z-index:200;background:var(--fg);color:var(--ink);padding:14px 18px;border-radius:12px}
.skip:focus{top:16px}
.wrap{max-width:var(--max);margin:0 auto}
.kicker{font-size:12px;letter-spacing:.08em;text-transform:uppercase;font-weight:500;font-variant-numeric:tabular-nums}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none}

/* Loader */
.loader{position:fixed;inset:0;z-index:150;background:var(--ink);color:var(--fg);display:flex;align-items:flex-end;justify-content:space-between;padding:var(--gutter);transition:transform 1s var(--ease) .1s}
.loader-count{font-size:clamp(64px,10vw,160px);font-weight:500;letter-spacing:-.05em;line-height:.8;font-variant-numeric:tabular-nums}
.loader-label{font-size:12px;letter-spacing:.08em;font-weight:500}
body.loaded .loader{transform:translateY(-100%)}

/* Header */
.nav{position:fixed;z-index:60;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:calc(16px + env(safe-area-inset-top,0px)) var(--gutter) 16px;pointer-events:none}
.nav>*{pointer-events:auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:18px;letter-spacing:-.03em;color:#fff;transition:color .4s}
.brand small{font-size:11px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;opacity:.6;margin-left:4px}

.nav-actions{display:flex;gap:6px}

/* Buttons: pill, rolling label */
.btn{display:inline-flex;align-items:center;justify-content:space-between;gap:14px;height:44px;padding:0 20px;border-radius:999px;font-size:14px;font-weight:500;letter-spacing:-.01em;transition:background .3s,color .3s,border-color .3s;white-space:nowrap}
.btn b{font-weight:400;font-size:15px;transition:transform .4s var(--ease)}
.btn:hover b{transform:translate(3px,-3px)}
.btn-lg{height:54px;padding:0 24px;font-size:15px;gap:48px}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover)}
.btn-light{background:var(--fg);color:var(--ink)}
.btn-dark{background:var(--fg);color:var(--ink)}
.btn-dark:hover{background:#fff}
.btn-outline{border:1px solid var(--line);background:transparent}
.btn-outline:hover{background:var(--fg);color:var(--ink);border-color:var(--fg)}
.btn-ghost{border:1px solid rgba(255,255,255,.22);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.roll{display:inline-block;overflow:hidden;height:1.3em;line-height:1.3;vertical-align:middle}
.roll-in{display:flex;flex-direction:column;transition:transform .5s var(--ease)}
.btn:hover .roll-in,.menu-link:hover .roll-in{transform:translateY(-50%)}
.dots{display:inline-flex;gap:3px}
.dots i{width:5px;height:5px;border-radius:50%;background:currentColor;transition:transform .4s var(--ease)}
.menu-open .dots i:first-child{transform:translateX(4px)}
.menu-open .dots i:last-child{transform:translateX(-4px)}

/* Overlay menu */
.menu{position:fixed;z-index:55;top:10px;right:10px;width:min(420px,calc(100% - 20px));background:var(--panel-2);color:var(--fg);border:1px solid var(--line);border-radius:var(--radius);padding:80px 24px 20px;box-shadow:0 30px 80px rgba(0,0,0,.18);transform-origin:top right;animation:pop .5s var(--ease)}
@keyframes pop{from{opacity:0;transform:scale(.94) translateY(-8px)}}
.menu nav{display:flex;flex-direction:column}
.menu-link{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);font-size:28px;font-weight:500;letter-spacing:-.03em}
.menu-link em{font-style:normal;font-size:12px;font-weight:500;color:var(--muted)}
.menu-foot{display:flex;justify-content:space-between;align-items:center;margin-top:20px;color:var(--muted)}
.menu .btn{height:38px;font-size:13px}

/* Hero */
.hero{position:relative;height:280vh;height:280svh;background:var(--ink)}
.hero-stage{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;background:var(--ink);color:#fff}
#matter{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-orb{position:absolute;left:50%;top:50%;width:clamp(200px,30vw,420px);transform:translate(-50%,-50%);display:none}
.no-webgl .hero-orb,.static-view .hero-orb{display:block}
.hero-copy{position:absolute;left:var(--gutter);right:var(--gutter);bottom:clamp(110px,17vh,170px);z-index:3;pointer-events:none}
.display{font-weight:500;letter-spacing:-.045em;line-height:.95;margin:0;text-transform:uppercase}
.hero .display{font-size:clamp(40px,6vw,96px)}
.display .line{display:block;overflow:hidden;padding-bottom:.06em}
.display .line>span{display:inline-block;transform:translateY(105%);transition:transform 1.2s var(--ease)}
.loaded .hero .display .line>span{transform:none}
.hero .display .line:nth-child(2)>span{transition-delay:.08s}
.hero-sub{margin:22px 0 0;font-size:clamp(15px,1.2vw,18px);line-height:1.6;color:rgba(255,255,255,.72)}
.hero-sub b{color:#fff;font-weight:500}
.hero-note{position:absolute;right:var(--gutter);bottom:clamp(110px,17vh,170px);max-width:240px;z-index:3;text-align:right}
.hero-note .kicker{opacity:.6}
.hero-note p{margin:10px 0 0;font-size:15px;line-height:1.6}
.hero-cue{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:22px;z-index:3;font-size:12px;letter-spacing:.08em;font-weight:500;pointer-events:none}
.hero-cue .plus{font-size:18px;font-weight:300;opacity:.7}
.hero-meta{position:absolute;left:var(--gutter);right:var(--gutter);bottom:26px;display:flex;justify-content:space-between;font-size:12px;letter-spacing:.08em;font-weight:500;opacity:.6;z-index:3;text-transform:uppercase}
.hero-progress{position:absolute;left:var(--gutter);right:var(--gutter);bottom:56px;height:1px;background:rgba(255,255,255,.18);z-index:3}
.hero-progress span{display:block;height:100%;width:0;background:#fff}
.passage{position:absolute;inset:0;display:grid;place-items:center;font-size:14px;font-weight:500;letter-spacing:.4em;opacity:0;pointer-events:none;z-index:4}
.inside-label{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px;color:var(--ink);opacity:0;z-index:4;white-space:nowrap}
.hero.inside .hero-meta{color:var(--ink)}
.hero.inside .hero-progress{background:rgba(0,0,0,.12)}
.hero.inside .hero-progress span{background:var(--ink)}

/* Intro scene: 1 + 1 — two chrome orbs merge as the visitor scrolls */
.scene{position:relative;height:400vh;height:400svh}
.scene-stage{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden}
#merge{position:absolute;inset:0;width:100%;height:100%;display:block}
.merge-fallback{display:none;position:absolute;inset:0;align-items:center;justify-content:center;gap:4vw}
.merge-fallback img{width:min(28vw,280px)}
.no-merge .merge-fallback{display:flex}
.scene-top{position:absolute;left:var(--gutter);right:var(--gutter);top:calc(84px + env(safe-area-inset-top,0px));display:flex;align-items:center;gap:10px;color:var(--muted);z-index:2}
.scene-count{margin-left:auto}.scene-count b{color:var(--fg);font-weight:500}
.orb-tag{position:absolute;left:0;top:0;transform:translate(-50%,0);display:flex;flex-direction:column;align-items:center;gap:6px;white-space:nowrap;pointer-events:none;z-index:2;will-change:transform,opacity}
.orb-tag .kicker{color:var(--accent);font-size:13px}
.orb-tag b{font-size:clamp(14px,1.1vw,17px);font-weight:500;letter-spacing:-.01em}
.orb-tag.one{opacity:0}
.orb-plus{position:absolute;left:50%;top:42%;transform:translate(-50%,-50%);font-size:clamp(28px,3vw,48px);font-weight:300;color:var(--muted);z-index:2;pointer-events:none}
.captions{position:absolute;left:var(--gutter);bottom:calc(96px + env(safe-area-inset-bottom,0px));z-index:2;height:2.3em;font-size:clamp(30px,4.4vw,72px);width:calc(100% - 2*var(--gutter))}
.cap{position:absolute;left:0;bottom:0;margin:0;font-size:1em;font-weight:500;letter-spacing:-.045em;line-height:1.08}
.ln{display:block;overflow:hidden;padding-bottom:.06em}
.ln>span{display:inline-block;transform:translateY(110%);transition:transform .9s var(--ease)}
.ln+.ln>span{transition-delay:.07s}
.cap.on .ln>span{transform:none;transition-delay:.12s}
.cap.on .ln+.ln>span{transition-delay:.2s}
.scene-actions{position:absolute;right:var(--gutter);bottom:calc(100px + env(safe-area-inset-bottom,0px));display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;z-index:2;opacity:0;transform:translateY(16px);transition:opacity .6s,transform .8s var(--ease);pointer-events:none}
.scene[data-step="4"] .scene-actions{opacity:1;transform:none;pointer-events:auto}
.scene-bar{position:absolute;left:var(--gutter);right:var(--gutter);bottom:calc(40px + env(safe-area-inset-bottom,0px));height:1px;background:var(--line);z-index:2}
.scene-bar span{display:block;height:100%;width:0;background:var(--fg)}

/* Section scaffolding (Lusion: big uppercase title left, small label + copy right) */
.section{padding:clamp(70px,12vh,140px) var(--gutter)}
.sec-head{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:end;padding-bottom:clamp(36px,6vh,64px);margin-bottom:clamp(28px,5vh,56px);border-bottom:1px solid var(--line)}
.mega{margin:0;font-size:clamp(44px,7vw,112px);font-weight:500;letter-spacing:-.055em;line-height:.9;text-transform:uppercase}
.mega.small{font-size:clamp(34px,4.6vw,72px)}
.sec-head-side{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.sec-head-side .kicker{color:var(--muted)}
.sec-head-side p{margin:0;font-size:clamp(16px,1.3vw,19px);line-height:1.65;max-width:34em}
.reveal{opacity:0;transform:translateY(40px);transition:opacity 1s var(--ease),transform 1.1s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* Download feature card (Lusion project card) */
.download{background:var(--panel);border-radius:var(--radius) var(--radius) 0 0}
.feature-card{display:grid;grid-template-columns:1fr 1.3fr;gap:clamp(24px,4vw,64px);align-items:center;background:var(--panel-2);border-radius:var(--radius);padding:clamp(24px,4vw,56px);overflow:hidden}
.tags{font-size:13px;color:var(--muted);letter-spacing:.02em}
.feature-copy h3{font-size:clamp(28px,3vw,44px);font-weight:500;letter-spacing:-.04em;line-height:1.15;margin:16px 0 18px}
.feature-copy p{margin:0 0 32px;line-height:1.75;color:var(--body);font-size:16px}
.device{margin:0;perspective:1400px;min-width:0}
.tablet{background:#000;padding:12px;border-radius:26px;box-shadow:0 1px 0 2px #4a4c53,0 50px 90px -30px rgba(0,0,0,.8);transform:rotateY(var(--ry,-12deg)) rotateX(var(--rx,6deg)) rotateZ(-2deg);transition:transform .8s var(--ease);position:relative}
.tablet img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:15px}
/* Live recreation of the iPad app home screen, animated through a connection */
.app{position:relative;width:100%;aspect-ratio:4/3;border-radius:15px;overflow:hidden;background:#fff;color:#1d1d1f;container-type:inline-size}
.app-home,.app-mac{position:absolute;inset:0}
.app-sb{position:absolute;top:1.6cqw;left:2cqw;right:2cqw;display:flex;justify-content:space-between;font-size:1.25cqw;font-weight:600}
.app-status{position:absolute;top:6.4cqw;left:3cqw;font-size:1.2cqw;color:#8a8a8e}
.app-status span{transition:color .3s}
.app-more{position:absolute;top:5.6cqw;right:3cqw;font-size:1.6cqw;letter-spacing:-.1em}
.app-orb{position:absolute;left:50%;top:45%;width:26cqw;aspect-ratio:1;transform:translate(-50%,-50%);transition:transform 1.1s var(--ease)}
.app-orb img{position:relative;width:100%;filter:drop-shadow(0 1.4cqw 1.6cqw rgba(0,0,0,.12));animation:breathe 4s ease-in-out infinite}
@keyframes breathe{50%{transform:scale(1.035) rotate(3deg)}}
.ring{position:absolute;inset:6%;border-radius:50%;border:.2cqw solid rgba(26,47,251,.55);opacity:0}
.app-btn{position:absolute;left:50%;top:72%;transform:translate(-50%,-50%);display:flex;gap:.8cqw;align-items:center;padding:1.3cqw 3.2cqw;border-radius:99px;background:#f4f4f6;box-shadow:0 .5cqw 1.4cqw rgba(0,0,0,.08);font-size:1.3cqw;font-weight:600;transition:transform .2s,background .2s,opacity .4s}
.app-btn span{font-size:1.7cqw;line-height:1}
.app-tag{position:absolute;left:0;right:0;bottom:4.5cqw;text-align:center;font-size:1.15cqw;color:#9a9aa0;transition:opacity .4s}
.app-sheet{position:absolute;left:28%;right:28%;bottom:0;background:#fff;border-radius:2.2cqw 2.2cqw 0 0;box-shadow:0 -1cqw 4cqw rgba(0,0,0,.14);padding:1.2cqw 2.4cqw 3cqw;transform:translateY(105%);transition:transform .6s var(--ease);display:flex;flex-direction:column;gap:1.4cqw}
.sheet-grab{align-self:center;width:5cqw;height:.5cqw;border-radius:9px;background:#d5d5d9}
.sheet-title{font-size:1.5cqw;font-weight:700}
.sheet-row{display:flex;align-items:center;gap:1.4cqw;padding:1.4cqw;border-radius:1.4cqw;background:#f4f4f6;transition:background .2s}
.mac-icon{width:4cqw;height:2.6cqw;border-radius:.6cqw;background:linear-gradient(#cfd2d8,#a9adb5)}
.sheet-name{flex:1;font-size:1.4cqw;font-weight:600;display:flex;flex-direction:column;gap:.3cqw}
.sheet-name small{font-size:1.05cqw;font-weight:500;color:#2a9d4b}
.sheet-go{font-size:2cqw;color:#9a9aa0}
.app-touch{position:absolute;width:4cqw;height:4cqw;border-radius:50%;background:rgba(26,47,251,.25);border:.25cqw solid rgba(26,47,251,.6);transform:translate(-50%,-50%) scale(.4);opacity:0;pointer-events:none;left:50%;top:72%;transition:left .6s var(--ease),top .6s var(--ease),opacity .2s}
.app-mac{opacity:0;background:radial-gradient(120% 90% at 20% 10%,#3b4a8f,transparent 60%),radial-gradient(90% 80% at 90% 90%,#1a2ffb,transparent 55%),linear-gradient(160deg,#0f1424,#1f2a55);transition:opacity .7s ease}
.mac-bar{position:absolute;top:0;left:0;right:0;height:3cqw;display:flex;align-items:center;gap:2cqw;padding:0 2cqw;background:rgba(255,255,255,.14);backdrop-filter:blur(8px);color:#fff;font-size:1.15cqw}
.mac-bar span{width:1.2cqw;height:1.4cqw;border-radius:40% 40% 45% 45%;background:#fff}
.mac-bar em{margin-left:auto;font-style:normal}
.mac-win{position:absolute;left:18%;top:16%;width:58%;height:56%;border-radius:1.2cqw;background:rgba(246,246,248,.96);box-shadow:0 3cqw 6cqw rgba(0,0,0,.4);overflow:hidden;transform:translateY(4cqw) scale(.94);opacity:0;transition:transform .9s var(--ease) .3s,opacity .6s .3s}
.mac-win-bar{height:3.2cqw;display:flex;align-items:center;gap:.7cqw;padding:0 1.4cqw;border-bottom:1px solid #e3e3e7}
.mac-win-bar i{width:1.1cqw;height:1.1cqw;border-radius:50%;background:#ff5f57}
.mac-win-bar i:nth-child(2){background:#febc2e}.mac-win-bar i:nth-child(3){background:#28c840}
.mac-win-body{padding:2.4cqw;display:flex;flex-direction:column;gap:1.4cqw}
.mac-win-body span{height:1.4cqw;border-radius:9px;background:#dedfe4;width:80%}
.mac-win-body span:nth-child(1){width:45%;height:2.2cqw;background:#c5c8d0}
.mac-win-body span:nth-child(3){width:65%}.mac-win-body span:nth-child(4){width:30%;background:#1a2ffb}
.mac-dock{position:absolute;left:50%;bottom:1.6cqw;transform:translateX(-50%);display:flex;gap:1cqw;padding:1cqw 1.4cqw;border-radius:1.8cqw;background:rgba(255,255,255,.18);backdrop-filter:blur(8px)}
.mac-dock i{width:4cqw;height:4cqw;border-radius:1cqw;background:linear-gradient(145deg,#fff,#c4c8d2)}
.mac-dock i:nth-child(2){background:linear-gradient(145deg,#6d7cff,#1a2ffb)}.mac-dock i:nth-child(4){background:linear-gradient(145deg,#3a3d45,#111)}
.app-live{position:absolute;top:5cqw;right:2.4cqw;display:flex;align-items:center;gap:.8cqw;padding:.8cqw 1.4cqw;border-radius:99px;background:rgba(0,0,0,.45);color:#fff;font-size:1.1cqw;font-weight:600;opacity:0;transition:opacity .5s .6s}
.app-live .status-dot{width:.9cqw;height:.9cqw;background:#28c840}
/* steps */
[data-step="tap"] .app-touch,[data-step="pick"] .app-touch{opacity:1;animation:tap .5s var(--ease)}
@keyframes tap{from{transform:translate(-50%,-50%) scale(1.4);opacity:0}to{transform:translate(-50%,-50%) scale(.4)}}
[data-step="tap"] .app-btn{transform:translate(-50%,-50%) scale(.94);background:#e9e9ee}
[data-step="sheet"] .app-sheet,[data-step="pick"] .app-sheet{transform:none}
[data-step="pick"] .sheet-row{background:#e3e6ff}
[data-step="pick"] .app-touch{left:50%;top:88%}
[data-step="connecting"] .app-btn,[data-step="connected"] .app-btn,[data-step="connecting"] .app-tag,[data-step="connected"] .app-tag{opacity:0}
[data-step="connecting"] .ring{animation:ring 1.5s ease-out infinite}
[data-step="connecting"] .ring:nth-child(2){animation-delay:.5s}[data-step="connecting"] .ring:nth-child(3){animation-delay:1s}
@keyframes ring{from{transform:scale(1);opacity:.9}to{transform:scale(1.9);opacity:0}}
[data-step="connecting"] .app-orb img{animation:spin 1.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
[data-step="connecting"] #app-status{color:#1a2ffb}
[data-step="connected"] #app-status{color:#2a9d4b}
[data-step="connected"] .app-orb{transform:translate(-50%,-50%) scale(6)}
[data-step="mac"] .app-mac{opacity:1}
[data-step="mac"] .mac-win{transform:none;opacity:1}
[data-step="mac"] .app-live{opacity:1}
.static-view .app *{animation:none!important}
.camera{position:absolute;width:4px;height:4px;border-radius:50%;background:#444;top:4px;left:50%}
.device figcaption{display:flex;justify-content:space-between;margin-top:32px;color:var(--muted)}

/* Device marquee (logo wall) */
.logos{background:var(--panel);padding:clamp(40px,8vh,90px) 0 clamp(70px,12vh,130px);overflow:hidden}
.logos-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;padding:0 var(--gutter) clamp(32px,6vh,56px)}
.logos-head p{margin:0;color:var(--muted);max-width:26em;line-height:1.6}
.marquee{overflow:hidden;white-space:nowrap;padding:5px 0}
.marquee-track{display:inline-flex;gap:10px;padding-right:10px;animation:marquee 40s linear infinite;will-change:transform}
.marquee.reverse .marquee-track{animation-direction:reverse}
.tile{display:inline-flex;align-items:center;justify-content:center;min-width:clamp(150px,16vw,240px);height:clamp(72px,8vw,110px);padding:0 28px;border-radius:18px;background:var(--panel-2);font-size:clamp(18px,1.6vw,24px);font-weight:500;letter-spacing:-.02em}
@keyframes marquee{to{transform:translateX(-50%)}}

/* Guide carousel (Lusion team cards) */
.guide{background:var(--paper)}
.carousel{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:0 0 28px;cursor:grab;scrollbar-width:none;overscroll-behavior-x:contain}
.carousel::-webkit-scrollbar{display:none}
.carousel.dragging{cursor:grabbing;scroll-snap-type:none}
.carousel.dragging *{pointer-events:none}
.step-card{flex:0 0 clamp(280px,34vw,520px);scroll-snap-align:start;background:var(--panel);color:var(--fg);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;min-height:clamp(420px,60vh,600px);position:relative;user-select:none}
.index{font-size:13px;font-weight:500;color:rgba(255,255,255,.55);font-variant-numeric:tabular-nums}
.step-art{flex:1;position:relative;margin:22px 0;border-radius:16px;background:radial-gradient(circle at 50% 35%,#3a3d45,#16171b 70%);overflow:hidden;display:flex;align-items:center;justify-content:center;gap:16px;min-height:160px}
.screen{display:block;background:#e9ebf0;border-radius:8px;box-shadow:inset 0 0 0 4px #c9ccd3}
.screen.mac{width:42%;aspect-ratio:16/10}
.screen.phone{width:18%;aspect-ratio:9/19;border-radius:14px}
.screen.pad{width:30%;aspect-ratio:4/3;border-radius:10px}
.qr{width:22%;aspect-ratio:1;background:conic-gradient(#fff 25%,transparent 0 50%,#fff 0 75%,transparent 0) 0 0/25% 25%;border:5px solid #fff;border-radius:6px}
.link-line{width:14%;height:2px;background:repeating-linear-gradient(90deg,var(--accent) 0 6px,transparent 6px 12px);background-size:24px 2px;animation:flow 1s linear infinite}
@keyframes flow{to{background-position:24px 0}}
.step-card h3{font-size:clamp(22px,1.9vw,30px);font-weight:500;letter-spacing:-.035em;margin:0 0 10px}
.step-card p{margin:0;color:rgba(255,255,255,.65);line-height:1.7;font-size:15px;max-width:34ch}
.arrow{position:absolute;top:16px;right:16px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.1);display:grid;place-items:center;font-size:17px;text-align:center;transition:background .3s}
.arrow:hover{background:var(--accent)}
.carousel-hint{display:flex;align-items:center;gap:24px;color:var(--muted)}
.carousel-bar{flex:1;height:2px;background:var(--line);border-radius:2px;overflow:hidden}
.carousel-bar span{display:block;height:100%;width:33%;background:var(--fg);transition:transform .2s}

/* Usage (area of expertise) */
.usage{background:var(--paper)}
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.card{position:relative;background:var(--panel);border-radius:var(--radius);padding:24px;min-height:clamp(380px,52vh,500px);display:flex;flex-direction:column;overflow:hidden;transition:background .5s var(--ease),color .5s var(--ease)}
.card .glyph{font-size:clamp(84px,8vw,128px);font-weight:500;line-height:.8;letter-spacing:-.06em;margin-bottom:auto;transition:transform .7s var(--ease)}
.card h3{font-size:clamp(20px,1.6vw,26px);font-weight:500;letter-spacing:-.03em;margin:28px 0 6px}
.card-sub{margin:0 0 18px;color:var(--muted);font-size:14px}
.card ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.card li{padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.card b{position:absolute;right:22px;top:22px;font-weight:400;font-size:20px;transition:transform .4s var(--ease)}
.card:hover{background:var(--accent);color:#fff}
.card:hover .card-sub{color:rgba(255,255,255,.75)}
.card:hover ul,.card:hover li{border-color:rgba(255,255,255,.25)}
.card:hover .glyph{transform:translateY(-6px)}
.card:hover b{transform:translate(3px,-3px)}
.cards .card:nth-child(2){transition-delay:.06s}.cards .card:nth-child(3){transition-delay:.12s}.cards .card:nth-child(4){transition-delay:.18s}

/* Help (recognition list) */
.help{background:var(--paper)}
.help-grid{display:grid;grid-template-columns:1fr 2.2fr;gap:clamp(24px,4vw,64px);align-items:start}
.stat{display:flex;justify-content:space-between;align-items:flex-start;border-top:1px solid var(--fg);padding-top:16px}
.stat b{font-size:clamp(56px,6vw,96px);font-weight:500;letter-spacing:-.06em;line-height:.8;font-variant-numeric:tabular-nums}
.faq details{border-top:1px solid var(--line)}
.faq details:first-child{border-top-color:var(--fg)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;gap:28px;align-items:baseline;padding:20px 0;cursor:pointer;font-size:clamp(18px,1.5vw,22px);font-weight:500;letter-spacing:-.02em}
.faq summary::-webkit-details-marker{display:none}
.faq summary span{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.faq summary::after{content:"+";margin-left:auto;font-weight:300;font-size:24px;transition:transform .4s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 22px 56px;color:var(--body);line-height:1.75;max-width:52ch}

/* Closing, footer, next-page teaser */
.closing{background:var(--ink);color:var(--fg);border-top:1px solid var(--line);border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;padding:0 var(--gutter)}
.closing-inner{padding:clamp(90px,16vh,170px) 0 clamp(60px,10vh,100px)}
.closing .kicker{opacity:.55}
.closing-title{margin:20px 0 0;font-size:clamp(36px,5.6vw,92px);font-weight:500;letter-spacing:-.05em;line-height:1.02}
.quick-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:48px}
.footer{padding:48px 0 28px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-grid>div{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.footer-grid .kicker{opacity:.45;margin-bottom:6px}
.footer-grid a,.footer-grid p{font-size:15px;margin:0;opacity:.85}
.footer-grid a:hover{opacity:1;text-decoration:underline;text-underline-offset:4px}
.footer-brand{flex-direction:row!important;align-items:center!important;font-size:22px;font-weight:600;letter-spacing:-.04em}
.link-btn{font-size:14px;opacity:.85;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;margin-top:56px;font-size:12px;letter-spacing:.04em;color:rgba(255,255,255,.55)}
.footer-bottom .icp:hover{color:#fff;text-decoration:underline}
.next-page{display:flex;flex-direction:column;align-items:center;gap:14px;width:100%;padding:clamp(70px,14vh,140px) 0 clamp(50px,8vh,80px);border-top:1px solid rgba(255,255,255,.12);text-align:center}
.next-page .kicker{opacity:.55}
.next-title{font-size:clamp(40px,7vw,112px);font-weight:500;letter-spacing:-.05em;line-height:1;transition:color .4s}
.next-cue{width:54px;height:54px;border-radius:50%;background:var(--accent);display:grid;place-items:center;font-size:20px;transition:transform .5s var(--ease)}
.next-page:hover .next-title{color:#8e9bff}
.next-page:hover .next-cue{transform:translateY(-6px)}

/* Dialog */
dialog{width:min(640px,calc(100% - 32px));max-height:86vh;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel-2);padding:clamp(28px,5vw,44px);color:var(--fg);box-shadow:0 40px 120px rgba(0,0,0,.3)}
dialog[open]{animation:pop .45s var(--ease)}
dialog::backdrop{background:rgba(0,0,0,.6);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
dialog .close{position:absolute;right:16px;top:16px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.08);font-size:22px;line-height:1;text-align:center}
dialog .kicker{color:var(--muted)}
dialog h2{font-size:clamp(26px,3.4vw,36px);font-weight:500;letter-spacing:-.04em;margin:14px 0 18px;line-height:1.15}
dialog p,dialog li{font-size:15px;line-height:1.85;color:var(--body)}
dialog ol{padding-left:22px}
dialog strong{font-weight:600;color:var(--fg)}
dialog .download-row{display:flex;justify-content:space-between;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);font-size:16px;font-weight:500}
dialog .download-row span{font-size:13px;color:var(--muted);font-weight:400}
dialog .download-row a{display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;background:var(--accent);color:#fff;font-size:13px;font-weight:500;text-decoration:none}dialog .download-row a:hover{background:var(--accent-hover)}
dialog .pill{margin-top:16px;display:inline-flex;align-items:center;height:48px;padding:0 22px;border-radius:999px;background:var(--accent);color:#fff;font-size:14px;font-weight:500}
dialog details{border-top:1px solid var(--line);padding:14px 0;font-size:15px}
dialog summary{cursor:pointer;font-weight:500}

/* Static / reduced motion */
.static-view .hero{height:auto}
.static-view .hero-stage{position:relative}
.static-view #matter,.static-view .passage,.static-view .hero-cue{display:none}
.static-view .reveal{opacity:1;transform:none}
.static-view .marquee-track{animation:none}
.static-view .scene{height:auto}
.static-view .scene-stage{position:relative}
.static-view .cap{display:none}.static-view .cap[data-i="4"]{display:block}
.static-view .cap .ln>span{transform:none}

@media (max-width:1000px){
  .sec-head,.feature-card,.help-grid{grid-template-columns:minmax(0,1fr)}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-note{display:none}
}
@media (max-width:560px){
  .brand>span{font-size:16px}
  .brand small{display:none}
  .nav-get{display:none}
  .cards{grid-template-columns:minmax(0,1fr)}
  .card{min-height:0}
  .card .glyph{margin-bottom:8px}
  .btn-lg{gap:24px;padding:0 20px}
  .hero-meta span:first-child{display:none}
  .hero-cue{top:auto;bottom:84px;left:auto;right:var(--gutter);transform:none}
  .hero-cue .plus{display:none}
  .faq details p{margin-left:0}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .captions{bottom:calc(150px + env(safe-area-inset-bottom,0px));font-size:clamp(24px,6.4vw,30px)}
  .scene-actions{left:var(--gutter);right:auto;justify-content:flex-start;bottom:calc(64px + env(safe-area-inset-bottom,0px))}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}