:root { --paper:#fafaf8; --ink:#1c1c1b; --muted:#757573; --red:#db452e; --line:#deded9; --cool:#f0f2f3; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:94px; }
body { margin:0; color:var(--ink); background:var(--paper); font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif; letter-spacing:0; -webkit-font-smoothing:antialiased; }
button,a,input,select { -webkit-tap-highlight-color:transparent; }
button,select { font:inherit; color:inherit; }
button,a,select { touch-action:manipulation; }
button { cursor:pointer; border:0; }
a { color:inherit; text-decoration:none; }
img { max-width:100%; }
:focus-visible { outline:2px solid var(--red); outline-offset:5px; }
[hidden] { display:none!important; }
.shell { width:min(1260px,calc(100% - 88px)); margin-inline:auto; }
.skip { position:fixed; top:-80px; left:12px; padding:12px; z-index:30; background:white; }
.skip:focus { top:8px; }
header { height:74px; position:sticky; top:0; z-index:20; background:#fafaf8f2; backdrop-filter:blur(18px); }
.nav { height:100%; display:flex; align-items:center; justify-content:space-between; gap:24px; border-bottom:1px solid var(--line); }
.brand { display:flex; align-items:center; gap:8px; font-size:17px; font-weight:700; white-space:nowrap; }
.brand img { width:29px; height:29px; object-fit:contain; mix-blend-mode:multiply; }
.nav-links,.nav-actions { display:flex; gap:30px; align-items:center; font-size:12px; }
.nav-links a { position:relative; padding:15px 0; }
.nav-links a::after { content:''; position:absolute; bottom:7px; left:0; width:0; height:1px; background:var(--red); transition:width .25s; }
.nav-links a:hover::after { width:100%; }
.nav-actions { gap:20px; }
.button { display:inline-flex; align-items:center; justify-content:space-between; gap:36px; background:var(--red); color:white; font-size:13px; font-weight:500; padding:17px 24px; min-height:50px; border-radius:2px; transition:background .25s,transform .25s; white-space:nowrap; }
.button:hover { background:#bb3320; transform:translateY(-2px); }
.button i { font-size:18px; transition:transform .25s; }
.button:hover i { transform:translateX(4px); }
.small { padding:12px 18px; min-height:39px; font-size:11px; }
.icon-button { width:36px; height:36px; display:inline-grid; place-items:center; background:transparent; border-radius:50%; font-size:19px; transition:background .2s; }
.icon-button:hover { background:#eaeae6; }
.android { margin-left:-8px; }
.eyebrow { font-family:Arial,"PingFang SC",sans-serif; font-size:10px; line-height:1.6; font-weight:500; color:var(--muted); margin:0 0 21px; }
.hero { overflow:hidden; }
.hero-copy { text-align:center; padding-top:46px; }
.hero-copy .eyebrow { font-size:9px; margin-bottom:17px; }
h1 { font-size:86px; line-height:1.12; font-weight:600; margin:0 0 18px; }
.hero h2 { font-size:28px; line-height:1.45; font-weight:500; margin:0 0 14px; }
.hero-copy>p:last-child { font-size:14px; color:#5e5e5c; line-height:1.8; margin:0; }
.hero-stage { position:relative; height:clamp(315px,calc(100svh - 640px),420px); margin-top:16px; }
#concept-scene { position:absolute; inset:0; cursor:grab; touch-action:pan-y; }
#concept-scene:active { cursor:grabbing; }
#concept-scene canvas { display:block; width:100%; height:100%; opacity:0; transition:opacity .7s; }
#concept-scene.scene-ready canvas { opacity:1; }
.scene-fallback { width:450px; height:90%; object-fit:contain; display:block; margin:auto; }
.scene-ready .scene-fallback { display:none; }
.specs { position:absolute; top:50%; transform:translateY(-50%); width:165px; margin:0; pointer-events:none; }
.specs-left { left:max(calc((100% - 1120px)/2),7%); }
.specs-right { right:max(calc((100% - 1120px)/2),7%); }
.specs>div+div { margin-top:29px; }
.specs dt { font-size:11px; padding-top:13px; position:relative; margin-bottom:8px; }
.specs dt::before { content:''; position:absolute; top:0; left:0; width:14px; height:1px; background:var(--red); }
.specs dd { margin:0; font-size:11px; color:var(--muted); line-height:1.6; }
.scene-meta { height:55px; display:flex; align-items:center; justify-content:space-between; font-size:11px; }
.scene-meta>div:first-child { display:flex; align-items:baseline; gap:13px; }
#scene-number { font-size:25px; font-weight:500; }
.slash { color:#aaa; font-size:17px; }
.scene-tools { display:flex; gap:5px; }
.journey { border-top:1px solid var(--line); display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); padding:25px 0 28px; }
.journey button { text-align:left; display:flex; align-items:start; gap:15px; background:transparent; padding:0 38px; }
.journey button+button { border-left:1px solid var(--line); }
.journey button>span { font-size:15px; transition:color .25s; }
.journey button.active>span { color:var(--red); }
.journey strong { display:block; font-size:14px; font-weight:500; margin-bottom:7px; }
.journey small { display:block; font-size:11px; color:var(--muted); }
.journey i { font-size:20px; color:#91918f; margin:auto 0 auto auto; transition:transform .35s,color .35s; }
.journey button:hover i,.journey button.active i { color:var(--red); transform:translateX(5px); }
.section { padding-top:100px; padding-bottom:100px; }
h2 { margin:0; font-size:43px; line-height:1.43; font-weight:500; }
.section-heading { display:flex; align-items:end; justify-content:space-between; gap:32px; margin-bottom:43px; }
.section-heading>p { font-size:14px; line-height:1.95; color:var(--muted); margin:0 0 3px; }
.inventory { background:var(--cool); padding-top:60px; }
.inventory-demo { border:1px solid #d4d7d7; background:var(--paper); border-radius:4px; overflow:hidden; }
.demo-header { min-height:72px; display:flex; gap:20px; align-items:center; justify-content:space-between; padding:18px 27px; border-bottom:1px solid var(--line); }
.demo-header>div { display:flex; gap:10px; align-items:center; }
.demo-header strong { font-size:14px; font-weight:500; }
.demo-status { width:6px; height:6px; background:var(--red); border-radius:50%; }
.sample-label { color:var(--muted); font-size:10px; margin-left:8px; }
.warehouse-select { display:flex; align-items:center; gap:7px; font-size:12px; }
.warehouse-select select { background:transparent; border:0; padding:8px; max-width:125px; cursor:pointer; }
.warehouse-select i { font-size:16px; }
.demo-toolbar { display:flex; justify-content:space-between; align-items:center; gap:20px; padding:19px 27px; }
.size-filter { display:flex; gap:5px; }
.size-filter button { font-size:11px; background:transparent; color:var(--muted); padding:9px 13px; border-radius:2px; white-space:nowrap; transition:background .25s,color .25s; }
.size-filter button.active { background:var(--ink); color:white; }
.size-filter button:hover:not(.active) { background:#ecece8; }
#row-count { font-size:11px; color:var(--muted); white-space:nowrap; }
.table-scroll { overflow-x:auto; }
table { width:100%; border-collapse:collapse; text-align:left; font-variant-numeric:tabular-nums; }
th { font-size:11px; font-weight:400; color:var(--muted); padding:14px 28px; background:#f3f3ef; white-space:nowrap; }
td { padding:17px 28px; border-top:1px solid #e7e7e1; font-size:13px; white-space:nowrap; }
td:first-child { font-weight:500; } td:nth-child(2) { font-weight:500; } td:last-child { font-variant-numeric:tabular-nums; }
tbody tr { transition:background .2s; }
tbody tr:hover { background:#f8e9e4; }
tbody .empty { height:195px; text-align:center; font-size:13px; color:var(--muted); }
.demo-summary { display:flex; justify-content:flex-end; align-items:center; gap:30px; padding:20px 28px; border-top:1px solid var(--line); font-size:12px; color:var(--muted); }
.demo-summary>span:first-child { margin-right:auto; }
.demo-summary strong { font-size:15px; font-weight:500; color:var(--red); margin:0 3px; }
.inventory-note { display:flex; align-items:center; justify-content:space-between; gap:20px; padding-top:22px; color:var(--muted); font-size:12px; }
.text-link { display:inline-flex; gap:18px; align-items:center; color:var(--ink); font-size:12px; }
.text-link:hover { color:var(--red); }
.workflow { display:grid; grid-template-columns:1.05fr .85fr; align-items:start; gap:140px; }
.workflow-copy { padding-top:26px; }
.section-intro { font-size:14px; line-height:2; color:var(--muted); margin:25px 0 37px; }
.workflow-list { border-top:1px solid var(--line); }
.workflow-list article { border-bottom:1px solid var(--line); }
.workflow-list h3 { margin:0; }
.workflow-list h3 button { display:flex; width:100%; align-items:center; gap:16px; padding:24px 0; background:transparent; text-align:left; font-size:17px; font-weight:500; }
.workflow-list h3 span { font-size:12px; color:var(--muted); font-weight:400; }
.workflow-list h3 i { margin-left:auto; font-size:19px; }
.workflow-list .open h3 span,.workflow-list .open h3 i { color:var(--red); }
.workflow-detail { padding:0 34px 25px 30px; }
.workflow-detail p { font-size:13px; line-height:1.95; margin:0 0 14px; color:var(--muted); }
.workflow-detail>span { font-size:10px; color:#898985; }
.workflow-visual { width:min(340px,100%); justify-self:center; }
.visual-label,.visual-caption { display:flex; justify-content:space-between; gap:14px; font-size:10px; color:var(--muted); padding:0 0 17px; }
.visual-label>span:last-child { color:#999; font-size:9px; }
#product-preview { display:block; position:relative; width:100%; padding:0; background:#fff; border-radius:6px; cursor:zoom-in; box-shadow:0 15px 38px #1919190c; }
#workflow-image { display:block; width:100%; height:auto; aspect-ratio:375/812; object-fit:contain; border-radius:6px; border:5px solid #fff; }
.expand-icon { position:absolute; right:10px; bottom:12px; width:30px; height:30px; display:grid; place-items:center; background:#f0f0ece6; border-radius:50%; font-size:16px; }
.visual-caption { padding:18px 0 0; }
.roles { background:#e9ece6; }
.role-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:44px; }
.role-grid article { border-top:1px solid #bec5b9; padding-top:27px; }
.role-grid article>i { font-size:27px; color:#5c6856; }
.role-grid h3 { font-size:23px; font-weight:500; margin:28px 0 16px; }
.role-grid p { font-size:13px; line-height:1.9; color:#67705f; margin-bottom:25px; }
.role-grid article>span { font-size:10px; color:#7c8576; }
.start { text-align:center; }
.faq { display:grid; grid-template-columns:1fr 1.15fr; gap:80px; border-bottom:1px solid var(--line); }
.faq-heading h2 { font-size:34px; }
.faq-heading .text-link { margin-top:26px; }
.faq-list { border-top:1px solid var(--line); }
.faq-list details { border-bottom:1px solid var(--line); }
.faq-list summary { display:flex; align-items:center; justify-content:space-between; gap:20px; padding:22px 0; cursor:pointer; list-style:none; font-size:15px; font-weight:500; line-height:1.7; }
.faq-list summary::-webkit-details-marker { display:none; }
.faq-list summary i { flex-shrink:0; font-size:18px; transition:transform .2s; }
.faq-list details[open] summary i { transform:rotate(45deg); color:var(--red); }
.faq-list details p { margin:0; padding:0 25px 23px 0; font-size:13px; line-height:1.95; color:var(--muted); }
@media(max-width:800px) { .faq { grid-template-columns:1fr; gap:30px; } .faq-heading h2 { font-size:30px; } .faq-list summary { font-size:14px; gap:16px; } }
@media(max-width:360px) { .faq-heading h2 { font-size:25px; } .faq-list summary { font-size:13px; } .faq-list details p { padding-right:0; font-size:12px; } }
.start .eyebrow { color:var(--red); }
.start h2 { font-size:53px; }
.start>p:not(.eyebrow) { font-size:14px; color:var(--muted); margin:22px 0 31px; }
.start-actions { display:flex; gap:14px; justify-content:center; }
.outline { color:var(--ink); background:transparent; border:1px solid #bfbfba; }
.outline:hover { background:#f0f0ec; }
.start-links { display:flex; gap:29px; justify-content:center; margin-top:26px; font-size:11px; color:var(--muted); }
.start-links i { margin-left:7px; }
footer { border-top:1px solid var(--line); }
.footer-top { display:flex; align-items:center; gap:28px; padding:28px 0; font-size:11px; color:var(--muted); }
.footer-top .brand { color:var(--ink); font-size:16px; }
.footer-top .icon-button { margin-left:auto; }
.legal { border-top:1px solid var(--line); padding:22px 0 9px; display:flex; justify-content:center; gap:25px; font-size:10px; color:var(--muted); line-height:1.8; }
.credits { text-align:center; font-size:8px; line-height:1.8; color:#8e8e89; padding-bottom:23px; }
.credits a { text-decoration:underline; }
dialog { position:fixed; inset:0; margin:auto; border:0; border-radius:6px; width:min(410px,calc(100% - 32px)); max-height:calc(100dvh - 30px); padding:34px; background:var(--paper); color:var(--ink); text-align:center; overflow:auto; }
dialog::backdrop { background:#1d1d1b9c; backdrop-filter:blur(9px); }
dialog[open] { animation:appear .22s ease-out; }
.close { position:absolute; top:8px; right:8px; }
dialog .eyebrow { margin:5px 0 13px; color:var(--red); }
dialog h2 { font-size:23px; }
#qr-subtitle { color:var(--muted); font-size:12px; margin:15px 0 0; }
#qr-image { display:block; width:260px; max-width:100%; max-height:61dvh; object-fit:contain; margin:22px auto 0; }
.is-demo #qr-image { width:auto; }
#image-modal { width:min(510px,calc(100% - 28px)); padding:15px 20px; overflow:hidden; }
.image-toolbar { display:flex; align-items:center; justify-content:space-between; gap:15px; }
.image-toolbar h2 { font-size:14px; }
#large-image { display:block; width:auto; max-width:100%; max-height:calc(100dvh - 164px); margin:12px auto; object-fit:contain; }
.image-controls { display:flex; align-items:center; justify-content:center; gap:32px; font-size:11px; color:var(--muted); }
.reveal { transition:opacity .6s,translate .6s cubic-bezier(.2,.7,.2,1); }
.reveal.pending { opacity:0; translate:0 20px; }
@keyframes appear { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
@media(min-width:1700px) { .hero-stage { height:420px; } .hero-copy { padding-top:48px; } h1 { font-size:90px; } }
@media(max-width:1100px) { .shell { width:calc(100% - 56px); } .nav-links { gap:20px; } .nav-actions { gap:14px; } h1 { font-size:73px; } .specs { width:140px; } .specs-left { left:5%; } .specs-right { right:5%; } .workflow { gap:75px; } .journey button { padding-inline:23px; } }
@media(max-width:800px) {
  .shell { width:calc(100% - 40px); } header { height:64px; } .nav { gap:12px; }
  .brand { font-size:15px; gap:7px; } .brand img { width:25px; height:25px; }
  .nav-links,.backend { display:none; } .nav-actions { gap:13px; } .small { padding:10px 12px; font-size:11px; min-height:35px; }
  .hero-copy { padding-top:37px; } h1 { font-size:57px; margin-bottom:15px; } .hero h2 { font-size:24px; }
  .hero-copy>p:last-child { font-size:12px; } .hero-stage { height:330px; }
  .specs { width:125px; } .specs-left { left:4%; } .specs-right { right:4%; } .specs dt,.specs dd { font-size:10px; }
  .journey { padding:23px 0; } .journey button { padding:0 18px; gap:12px; } .journey strong { font-size:13px; } .journey small { font-size:10px; }
  .journey i { display:none; } .journey button>span { font-size:12px; }
  .section { padding-block:66px; } h2 { font-size:34px; } .section-heading { display:block; margin-bottom:31px; }
  .section-heading>p { font-size:13px; margin-top:22px; }
  .demo-header { padding:17px 19px; gap:12px; } .demo-header strong { font-size:12px; }
  .demo-header>div { flex-wrap:wrap; gap:7px; } .sample-label { font-size:9px; margin-left:0; }
  .warehouse-select { font-size:11px; } .warehouse-select i { display:none; } .warehouse-select select { max-width:105px; padding:7px 0; }
  .demo-toolbar { padding:15px 19px; display:block; } #row-count { display:none; } .size-filter { overflow-x:auto; padding-bottom:4px; gap:3px; }
  .size-filter button { padding:9px 11px; font-size:10px; } th { padding:12px 18px; font-size:10px; } td { padding:16px 18px; font-size:12px; }
  .demo-summary { padding:17px 18px; gap:20px; font-size:10px; } .demo-summary strong { font-size:13px; }
  .inventory-note { align-items:start; font-size:11px; line-height:1.8; } .inventory-note>span { max-width:210px; } .text-link { font-size:11px; gap:8px; white-space:nowrap; }
  .workflow { grid-template-columns:1fr 1fr; gap:38px; } .workflow-copy { padding-top:0; }
  .workflow h2 { font-size:30px; } .section-intro { font-size:12px; margin:20px 0 27px; }
  .workflow-list h3 button { padding-block:20px; font-size:15px; gap:11px; }
  .workflow-detail { padding:0 0 21px 24px; } .workflow-detail p { font-size:12px; } .workflow-detail>span { font-size:9px; }
  .role-grid { gap:26px; } .role-grid h3 { font-size:21px; } .role-grid p { font-size:12px; }
  .start h2 { font-size:40px; } .start .button { font-size:12px; padding:15px 20px; min-height:46px; gap:20px; }
  .footer-top { gap:17px; } .footer-top .brand { font-size:14px; } .legal { flex-wrap:wrap; gap:4px; font-size:9px; }
}
@media(max-width:600px) {
  .hero-copy .eyebrow { font-size:7px; margin-bottom:16px; } h1 { font-size:46px; }
  .hero h2 { font-size:23px; } .hero-copy>p:last-child { font-size:11px; }
  .hero-stage { height:clamp(245px,calc(100svh - 495px),345px); margin-top:16px; }
  .specs { top:auto; bottom:0; transform:none; width:auto; max-width:132px; }
  .specs>div+div { display:none; } .specs-left { left:20px; } .specs-right { right:20px; }
  .specs dt { padding-top:9px; font-size:9px; margin-bottom:4px; } .specs dd { font-size:8px; }
  .scene-meta { height:62px; padding-top:14px; font-size:10px; } #scene-number { font-size:21px; }
  .scene-tools .icon-button { width:30px; height:30px; font-size:17px; }
  .journey { padding:19px 0 23px; } .journey button { padding:0 12px; gap:9px; } .journey button:first-child { padding-left:0; } .journey button:last-child { padding-right:0; }
  .journey strong { font-size:12px; } .journey small { font-size:8px; } .journey button>span { font-size:11px; }
  .demo-header>div { max-width:178px; } .sample-label { width:100%; margin-left:13px; } .demo-summary>span:first-child { display:none; }
  .demo-summary { justify-content:space-between; gap:10px; } .inventory-note { display:block; padding-top:17px; } .inventory-note .text-link { margin-top:10px; }
  .workflow { display:flex; flex-direction:column; gap:37px; } .workflow-copy { width:100%; } .workflow h2 { font-size:33px; }
  .workflow-visual { align-self:center; width:min(285px,83%); } .workflow-detail { padding-left:25px; padding-right:25px; }
  .workflow-detail p { font-size:13px; } .workflow-list h3 button { font-size:17px; } .section-intro { font-size:13px; }
  .role-grid { grid-template-columns:1fr; gap:28px; } .role-grid article { display:grid; grid-template-columns:1fr 1fr; column-gap:16px; padding-top:24px; }
  .role-grid article>i { grid-column:1; font-size:23px; } .role-grid h3 { grid-column:1; font-size:21px; margin:17px 0; }
  .role-grid p { grid-column:2; grid-row:1 / 4; margin:0; align-self:center; font-size:11px; line-height:2; }
  .role-grid article>span { grid-column:1; font-size:8px; }
  .start h2 { font-size:31px; } .start>p:not(.eyebrow) { font-size:12px; margin-top:18px; }
  .start-actions { gap:10px; } .start .button { font-size:11px; padding:14px 16px; gap:13px; }
  .footer-top { flex-wrap:wrap; padding:24px 0; gap:12px; } .footer-top>span { width:100%; order:3; font-size:10px; }
}
@media(max-width:360px) { .shell { width:calc(100% - 32px); } h1 { font-size:39px; } .hero h2 { font-size:21px; } .brand { font-size:13px; } .nav-actions { gap:8px; } .small { padding:10px; font-size:10px; } .hero-copy>p:last-child { font-size:10px; } .specs-left { left:16px; } .specs-right { right:16px; } .role-grid p { font-size:10px; } .start h2 { font-size:27px; } .start .button { padding:13px; gap:10px; } }
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } *,*::before,*::after { animation:none!important; transition:none!important; } .reveal.pending { opacity:1; translate:none; } }
@media(max-width:360px) { .workflow h2,.section-heading h2 { font-size:28px; } }