:root{--ink:#1d1d1f;--sub:#6e6e73;--blue:#0071e3;--grey:#f5f5f7;--line:#d2d2d7}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
h1,h2,p{margin:0}
img{display:block;max-width:100%;height:auto}

/* nav */
.gnav{position:sticky;top:0;z-index:50;height:48px;background:rgba(251,251,253,.8);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.06)}
.gwrap{max-width:1000px;height:100%;margin:auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between}
.logo{font-weight:600;font-size:17px}
.links{display:flex;gap:34px;font-size:12px;color:#424245}
.links a:hover{color:var(--ink)}
.try{font-size:12px;background:var(--blue);color:#fff;padding:4px 12px;border-radius:980px}

/* shared */
.eyebrow{font-size:21px;font-weight:600;color:#bf4800;margin-bottom:8px}
.eyebrow.dark{color:#bf4800}
.lede{font-size:24px;line-height:1.3;color:var(--ink);margin-top:14px;font-weight:400}
.ctas{display:flex;gap:16px;justify-content:center;margin-top:24px;flex-wrap:wrap}
.ctas.small{margin-top:18px}
.pill{display:inline-block;background:var(--blue);color:#fff;font-size:17px;padding:11px 22px;border-radius:980px;transition:background .2s}
.pill:hover{background:#0077ed}
.pill.outline{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.pill.outline:hover{background:var(--blue);color:#fff}
.ctas.small .pill{font-size:14px;padding:8px 16px}

/* hero */
.hero{text-align:center;padding:64px 22px 0;overflow:hidden;background:linear-gradient(#fff 0,#fff 55%,var(--grey) 55%)}
.hero h1{font-size:clamp(40px,6.6vw,80px);line-height:1.06;font-weight:700;letter-spacing:-.025em}
.stage{position:relative;width:min(760px,100%);height:440px;margin:56px auto 0}
.paper{position:absolute;left:50%;bottom:-20px;width:440px;height:420px;border-radius:16px;background:#fff;box-shadow:0 30px 70px rgba(0,0,0,.14),0 2px 6px rgba(0,0,0,.05)}
.p-back{transform:translateX(-50%) translate(-150px,30px) rotate(-8deg);background:linear-gradient(160deg,#e8f1ff,#fff)}
.p-mid{transform:translateX(-50%) translate(150px,30px) rotate(7deg);background:linear-gradient(160deg,#fff3e6,#fff)}
.p-front{transform:translateX(-50%);padding:34px 34px 0;text-align:left}
.doc-h{font-size:19px;font-weight:600;line-height:1.35}
.doc-meta{font-size:12px;color:var(--sub);margin:8px 0 22px}
.doc-chart{width:100%;height:auto;display:block}
.doc-lines{margin-top:20px;display:grid;gap:10px}
.doc-lines i{display:block;height:8px;border-radius:4px;background:#ececf0}
.doc-lines i.s{width:70%}.doc-lines i.s2{width:45%}
.chip{position:absolute;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-radius:14px;padding:12px 16px;font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.12);color:var(--sub)}
.chip b{color:var(--ink);font-size:20px;margin-right:4px}
.c1{left:2%;top:120px}.c1 b{color:#30d158}
.c2{right:2%;top:210px}

/* tiles */
.tiles{background:var(--grey);padding:12px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tile{position:relative;text-align:center;padding:54px 30px 0;min-height:580px;overflow:hidden;border-radius:0}
.tile h2{font-size:clamp(32px,3.4vw,48px);font-weight:700;letter-spacing:-.02em}
.tile>p{font-size:clamp(17px,1.6vw,22px);margin-top:8px;color:inherit}
.tile.light{background:#fff}
.tile.dark{background:#000;color:#f5f5f7}
.tile.dark .pill.outline{color:#2997ff;border-color:#2997ff}
.vis{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:min(420px,88%)}

.vis-lit{bottom:56px;display:grid;gap:14px;text-align:left}
.vis-lit .card{background:#fff;border-radius:16px;padding:20px 22px;box-shadow:0 14px 40px rgba(0,0,0,.10);border:1px solid #f0f0f2}
.vis-lit .card.off{transform:translate(28px,0) scale(.96);opacity:.7}
.vis-lit .q{font-size:17px;line-height:1.5}
.vis-lit .src{display:flex;justify-content:space-between;margin-top:12px;font-size:13px;color:var(--sub)}
.vis-lit .pg{background:#e8f1ff;color:var(--blue);padding:2px 10px;border-radius:980px;font-weight:600}

.vis-data{bottom:40px}
.vis-data svg{width:100%;height:auto}
.vis-data .stat{position:absolute;right:0;top:-10px;text-align:right}
.vis-data .stat b{display:block;font-size:34px;background:linear-gradient(90deg,#30d158,#0a84ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.vis-data .stat span{font-size:12px;color:#a1a1a6}

.vis-fig{bottom:40px}
.vis-fig svg{width:100%;height:auto;background:#1c1c1e;border-radius:16px;padding:12px}
.vis-fig .tag{margin-top:12px;font-size:12px;color:#a1a1a6;letter-spacing:.04em}

.vis-edit{bottom:70px;text-align:left;background:#fff;border-radius:16px;padding:26px;box-shadow:0 14px 40px rgba(0,0,0,.10);border:1px solid #f0f0f2}
.vis-edit .line{font-size:18px;line-height:1.8;font-family:Georgia,"Times New Roman",serif}
.vis-edit del{color:#ff3b30;text-decoration:line-through;opacity:.75}
.vis-edit ins{color:#248a3d;text-decoration:none;background:#e3f7e8;border-radius:4px;padding:0 3px}
.vis-edit .why{margin-top:14px;font-size:13px;color:var(--sub);border-top:1px solid #f0f0f2;padding-top:12px}

/* numbers */
.numbers{background:#000;color:#f5f5f7;text-align:center;padding:110px 22px}
.numbers .eyebrow{color:#2997ff}
.numbers h2{font-size:clamp(36px,5vw,64px);font-weight:700;letter-spacing:-.02em}
.num-row{max-width:1000px;margin:70px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.num-row b{display:block;font-size:clamp(44px,5.4vw,72px);font-weight:700;letter-spacing:-.03em;background:linear-gradient(180deg,#fff,#a1a1a6);-webkit-background-clip:text;background-clip:text;color:transparent}
.num-row span{font-size:15px;color:#a1a1a6}

/* lab */
.lab{background:var(--grey);padding:110px 22px 0;text-align:center;overflow:hidden}
.lab h2{font-size:clamp(36px,5vw,64px);font-weight:700;letter-spacing:-.02em}
.lab-vis{position:relative;max-width:760px;margin:60px auto 0;height:260px;display:flex;justify-content:center;align-items:flex-start;gap:24px}
.node{background:#fff;border-radius:16px;padding:22px 26px;font-size:15px;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.hub{position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:320px;padding:30px 0;border-radius:20px 20px 0 0;background:linear-gradient(135deg,#0071e3,#5e5ce6);color:#fff;font-size:20px;font-weight:600}
.lab-vis:before{content:"";position:absolute;left:18%;right:18%;top:70px;bottom:90px;border:2px dashed #c7c7cc;border-top:none;border-radius:0 0 30px 30px}

/* contact */
.contact{text-align:center;padding:100px 22px}
.contact h2{font-size:clamp(32px,4vw,48px);font-weight:700}
.ways{display:flex;justify-content:center;align-items:center;gap:56px;margin-top:40px;flex-wrap:wrap}
.ways a,.ways .qr{font-size:19px;color:var(--blue)}
.ways small{display:block;font-size:12px;color:var(--sub);margin-bottom:4px}
.ways .qr img{width:110px;height:110px;border-radius:12px}
.ways .qr small{margin:6px 0 0}

.foot{background:var(--grey);border-top:1px solid var(--line);padding:18px 22px;display:flex;justify-content:space-between;font-size:12px;color:var(--sub);flex-wrap:wrap;gap:8px}

@media(max-width:820px){
 .links{display:none}
 .tiles{grid-template-columns:1fr}
 .num-row{grid-template-columns:1fr 1fr;row-gap:44px}
}
@media(max-width:560px){
 .lede{font-size:19px}
 .stage{height:360px}
 .paper{width:300px;height:340px}
 .p-front{padding:24px 22px 0}
 .doc-h{font-size:16px}
 .p-back{transform:translateX(-50%) translate(-70px,30px) rotate(-8deg)}
 .p-mid{transform:translateX(-50%) translate(70px,30px) rotate(7deg)}
 .chip{display:none}
 .tile{min-height:520px;padding-top:44px}
 .lab-vis{gap:8px;height:230px}
 .node{padding:14px 10px;font-size:12px}
 .hub{width:240px;font-size:17px}
 .ways{flex-direction:column;gap:26px}
}

/* ---- v3 additions ---- */
.hero.hw{background:#fff;padding-bottom:40px}
.hero.hw .eyebrow{color:var(--ink);font-size:24px}
.hw-img{width:min(520px,80%);margin:30px auto 0;filter:drop-shadow(0 40px 50px rgba(0,0,0,.18))}
.fine{font-size:12px;color:var(--sub);margin-top:14px}

.soft{background:#000;color:#f5f5f7;text-align:center;padding:100px 22px 0;overflow:hidden}
.soft .eyebrow{color:#2997ff}
.soft h2,.hwsec h2,.local h2{font-size:clamp(36px,5vw,64px);font-weight:700;letter-spacing:-.02em}
.soft .lede{color:#f5f5f7}
.soft .stage{margin-top:60px}
.soft .p-back{background:linear-gradient(160deg,#1c2b44,#2a2a2e)}
.soft .p-mid{background:linear-gradient(160deg,#3a2a18,#2a2a2e)}

.hwsec{background:var(--grey);text-align:center;padding:110px 22px}
.hwsec .eyebrow{color:#bf4800}
.sizes{max-width:820px;margin:70px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:end}
.size .box{margin:0 auto;width:78%;border-radius:18px 18px 10px 10px;background:linear-gradient(180deg,#4a4f5a,#2b2f37);box-shadow:inset 0 2px 0 rgba(255,255,255,.18),0 24px 40px rgba(0,0,0,.18);position:relative}
.size .box:before{content:"";position:absolute;left:8%;right:8%;top:-6px;height:12px;border-radius:8px;background:#1d1d1f}
.size.l .box{height:104px}.size.z .box{height:146px}.size.x .box{height:194px}
.size .mm{font-size:40px;font-weight:700;margin-top:22px;letter-spacing:-.02em}
.size .mm small{font-size:16px;color:var(--sub);margin-left:4px;font-weight:500}
.size .nm{font-size:15px;color:var(--sub);margin-top:4px}
.hwsec .fine{margin-top:40px}

.local{background:#fff;text-align:center;padding:110px 22px}
.local .eyebrow{color:#248a3d}
.desk{max-width:640px;margin:56px auto 0;display:flex;align-items:center;justify-content:center;gap:22px}
.desk .dev{width:150px;padding:18px 0 14px;border-radius:16px;background:linear-gradient(180deg,#4a4f5a,#2b2f37);color:#fff;font-size:14px}
.desk .files{display:grid;gap:8px;text-align:left}
.desk .files span{display:block;background:var(--grey);border-radius:10px;padding:9px 14px;font-size:14px}
.desk .arrow{font-size:22px;color:#c7c7cc}
.desk .cloud{border:1.5px dashed #c7c7cc;border-radius:14px;padding:14px 16px;font-size:13px;color:var(--sub)}

/* lab page */
.pains{background:#fff;padding:90px 22px;text-align:center}
.pains h2{font-size:clamp(30px,4vw,48px);font-weight:700}
.pain-row{max-width:1000px;margin:50px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pain{background:var(--grey);border-radius:20px;padding:34px 26px;text-align:left}
.pain h3{font-size:22px;margin:0 0 10px}
.pain p{color:var(--sub);font-size:16px;line-height:1.5}
.vis-adv{bottom:44px;background:#fff;border-radius:16px;padding:18px;box-shadow:0 14px 40px rgba(0,0,0,.10);text-align:left;color:var(--ink)}
.vis-adv .row{display:flex;justify-content:space-between;align-items:center;padding:10px 6px;border-bottom:1px solid #f0f0f2;font-size:15px}
.vis-adv .row:last-child{border:none}
.vis-adv em{font-style:normal;font-size:12px;padding:3px 10px;border-radius:980px}
.ok{background:#e3f7e8;color:#248a3d}.warn{background:#fff4e0;color:#b25000}
.vis-bell{bottom:70px}
.bell{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:18px 20px;text-align:left;margin-top:12px;font-size:15px}
.bell small{display:block;color:#a1a1a6;font-size:12px;margin-bottom:4px}
.vis-stu{bottom:56px;display:flex;justify-content:center;gap:12px}
.vis-stu .m{width:30%;aspect-ratio:1/.8;border-radius:16px;background:linear-gradient(180deg,#4a4f5a,#2b2f37);box-shadow:0 18px 30px rgba(0,0,0,.18)}
.pilot{background:#000;color:#f5f5f7;text-align:center;padding:110px 22px}
.pilot h2{font-size:clamp(36px,5vw,64px);font-weight:700}
.pilot .lede{color:#f5f5f7}
.pilot .num-row{grid-template-columns:repeat(3,1fr);max-width:760px}

@media(max-width:820px){.pain-row{grid-template-columns:1fr}.sizes{gap:12px}.size .mm{font-size:28px}}
@media(max-width:560px){.desk{flex-direction:column}.desk .arrow{transform:rotate(90deg)}.pilot .num-row{grid-template-columns:1fr}}
.paper{color:var(--ink)}
.vis-adv:after{content:"界面示意";position:absolute;right:14px;bottom:-24px;font-size:11px;color:var(--sub)}.vis-adv{position:absolute}
@media(max-width:560px){.hero h1{font-size:34px}}