:root {
  --blue: #2454ed;
  --blue-soft: #eaf0ff;
  --ink: #19212c;
  --muted: #67717e;
  --line: #dfe4eb;
  --paper: #f6f8fb;
  --navy: #142643;
  --device-edge: #626a75;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; overflow-x: hidden; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; color: var(--ink); background: #fff; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid #f4b93e; outline-offset: 4px; }
img { display: block; max-width: 100%; }
.wrap { width: min(1200px, calc(100% - 80px)); margin: auto; }
.skip { position: absolute; top: -80px; background: #fff; padding: 10px; z-index: 9; }
.skip:focus { top: 0; }

header { height: 88px; padding: 0 40px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: #ffffffed; position: sticky; top: 0; z-index: 20; backdrop-filter: blur(12px); }
.brand { display: flex; align-items: center; }
.brand img { width: 224px; height: auto; }
nav { display: flex; align-items: center; gap: 26px; font-size: 14px; }
nav a:hover { color: var(--blue); }
.nav-contact { padding: 10px 18px; border: 1px solid var(--line); border-radius: 6px; }
.nav-contact span { margin-left: 16px; }

.hero { padding-top: 54px; }
.eyebrow { font-size: 11px; letter-spacing: 2px; font-weight: 650; margin: 0 0 24px; color: var(--muted); display: flex; align-items: center; gap: 10px; }
.dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 48px; align-items: center; }
h1 { font-size: clamp(50px, 5.7vw, 80px); line-height: 1.18; letter-spacing: -3px; margin: 0 0 26px; font-weight: 780; }
.blue { color: var(--blue); }
.hero-copy { color: var(--muted); font-size: 17px; line-height: 1.9; max-width: 600px; }
.actions { display: flex; gap: 12px; margin: 30px 0 25px; }
.button { padding: 13px 23px; font-size: 14px; border-radius: 6px; display: inline-flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 48px; border: 0; }
.primary { background: var(--blue); color: #fff; }
.primary:hover { background: #173cc1; }
.secondary { border: 1px solid var(--line); }
.hero-proof { display: flex; flex-wrap: wrap; gap: 24px; }
.hero-proof span { display: inline-flex; align-items: center; gap: 9px; color: var(--muted); font-size: 11px; }
.hero-proof span::before { content: ""; width: 6px; height: 6px; flex: 0 0 6px; border-radius: 50%; background: var(--blue); }
.hero-showcase { margin: 0; position: relative; }
.showcase-stage { height: 520px; position: relative; isolation: isolate; perspective: 1100px; }
.showcase-stage::before { content: ""; position: absolute; inset: 65px 0 0 34px; z-index: -1; border-radius: 50%; background: radial-gradient(circle, #edf2ff 0, #f8faff 48%, transparent 72%); filter: blur(10px); }
.showcase-card { position: absolute; margin: 0; overflow: hidden; border: 1px solid #dde4ef; background: #fff; box-shadow: 0 22px 55px #20365f1d; }
.showcase-card img { width: 100%; height: 100%; display: block; object-fit: cover; }
.showcase-backend { z-index: 1; left: 64px; top: 142px; width: 79%; height: 246px; border-radius: 10px; transform: rotateY(3deg) rotateZ(-.5deg); transform-origin: left center; }
.showcase-backend img { object-position: left top; }
.showcase-video { z-index: 3; right: -8px; top: 28px; width: 53%; aspect-ratio: 16 / 9; border-radius: 12px; transform: rotateZ(7deg); transform-origin: center; }
.showcase-play { position: absolute; left: 50%; top: 50%; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: #2454ede8; color: #fff; font-size: 10px; box-shadow: 0 8px 20px #1d3da34f; transform: translate(-50%, -50%); }
.showcase-phone { border: 2px solid var(--device-edge); border-radius: 18px; background: #f3f6fa; box-shadow: 0 11px 26px #52617b12; }
.showcase-phone::before, .showcase-phone::after { display: none; }
.showcase-phone img { object-position: top; }
.showcase-curated { z-index: 5; left: 24%; bottom: -8px; width: 142px; height: 304px; transform: rotateZ(-7deg) translateZ(42px); animation: showcase-float-left 6.6s ease-in-out .3s infinite; }
.showcase-goods { z-index: 4; right: 3%; bottom: -5px; width: 151px; height: 328px; transform: rotateZ(7deg) translateZ(28px); animation: showcase-float-right 6s ease-in-out infinite; }
.model-machine { position: absolute; z-index: 6; left: 0; top: 68px; width: 76px; height: 116px; padding: 34px 9px 24px; border: 2px solid #7f94c3; border-radius: 20px; background: #f7f9ff; box-shadow: 0 12px 26px #536b9c16; color: var(--blue); animation: model-breathe 4s ease-in-out infinite; }
.model-machine::before { content: ""; position: absolute; inset: 5px; border: 1px solid #d3dcf0; border-radius: 14px; pointer-events: none; }
.model-machine::after { display: none; }
.model-speaker { position: absolute; z-index: 1; left: 50%; top: 13px; width: 22px; height: 3px; border-radius: 3px; background: #7f94c3; transform: translateX(-50%); }
.model-home { position: absolute; z-index: 1; left: 50%; bottom: 10px; width: 22px; height: 3px; border-radius: 3px; background: #9aacca; transform: translateX(-50%); }
.model-rack { display: grid; gap: 6px; }
.model-rack i { height: 9px; border: 1px solid #9eb2df; border-radius: 4px; background: #f7f9ffbd; position: relative; }
.model-rack i::after { content: ""; position: absolute; right: 5px; top: 2px; width: 4px; height: 4px; border-radius: 50%; background: #55d68b; box-shadow: -8px 0 #4f7dff; }
.model-wave { position: absolute; z-index: 2; left: 67px; top: 112px; width: 154px; height: 88px; overflow: visible; }
.model-wave path { fill: none; stroke: #3f68ef; stroke-width: 2.2; stroke-linecap: round; stroke-dasharray: 6 9; opacity: .55; animation: data-wave 1.7s linear infinite; }
.model-wave circle { fill: #3f68ef; opacity: .72; }
.hero-bottom { border-top: 1px solid var(--line); margin-top: 52px; padding: 22px 0; display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); }

.section { padding-top: 90px; padding-bottom: 90px; }
.services, .process { background: var(--paper); }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; margin-bottom: 40px; }
.section-heading .eyebrow { margin-bottom: 17px; }
h2 { font-size: 38px; line-height: 1.4; letter-spacing: -1px; margin: 0; }
.section-heading > p { color: var(--muted); font-size: 14px; margin: 0 0 5px; }
.cases-heading-copy { max-width: 650px; }
.cases-intro { max-width: 590px; margin: 22px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.case-jump { display: flex; align-items: flex-end; justify-content: flex-end; gap: 22px; margin-bottom: 5px; }
.case-jump a { min-width: 122px; padding: 9px 0 0; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 7px; color: var(--blue); font-size: 10px; white-space: nowrap; transition: transform .2s ease; }
.case-jump a:hover { transform: translateY(-2px); }
.case-jump em { color: #8ba2e8; font-size: 8px; font-style: normal; font-weight: 700; letter-spacing: .5px; }
.case-jump strong { font-weight: 650; }
.case-jump a span { font-size: 9px; }
.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin-bottom: 22px; background: #fff; }
.problem-grid a { padding: 21px 24px; min-height: 142px; display: flex; flex-direction: column; border-right: 1px solid var(--line); transition: background .2s ease; }
.problem-grid a:last-child { border-right: 0; }
.problem-grid a:hover { background: var(--blue-soft); }
.problem-grid span { color: var(--blue); font-size: 10px; letter-spacing: 1px; margin-bottom: 13px; }
.problem-grid strong { font-size: 15px; margin-bottom: 5px; }
.problem-grid small { color: var(--muted); font-size: 12px; line-height: 1.65; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 28px; display: flex; flex-direction: column; }
.service-top { display: flex; align-items: center; justify-content: space-between; color: #8b95a4; font-size: 12px; margin-bottom: 25px; }
.service-symbol { font-size: 29px; color: var(--blue); }
.service-icon { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid #cdd8fa; border-radius: 9px; background: #f5f8ff; }
.service-icon svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.label { font-size: 11px; color: var(--muted); letter-spacing: .5px; margin: 0 0 9px; }
h3 { font-size: 23px; margin: 0 0 20px; }
.service-card h3 small { color: var(--muted); font-size: 12px; font-weight: 550; }
h4 { font-size: 17px; line-height: 1.7; margin: 0 0 12px; }
.service-card > p:not(.label) { font-size: 13px; color: var(--muted); }
.service-facts { margin: 8px 0 22px; border-top: 1px solid var(--line); }
.service-facts div { display: grid; grid-template-columns: 66px 1fr; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 12px; }
.service-facts dt { color: var(--blue); font-weight: 650; }
.service-facts dd { margin: 0; color: var(--muted); }
.service-note { border-top: 1px solid var(--line); padding-top: 16px; margin-top: auto; min-height: 66px; }
.service-card > a { display: flex; justify-content: space-between; color: var(--blue); font-size: 14px; font-weight: 650; padding-top: 14px; }

.cases { padding-bottom: 0; }
.case-screen { padding: 85px 0; border-top: 1px solid var(--line); scroll-margin-top: 88px; }
.case-screen:nth-of-type(odd) { background: var(--paper); }
.private-screen { background: #f4f7fe !important; }
.split-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 65px; align-items: center; }
.split-layout.reverse { grid-template-columns: 1.2fr .8fr; }
.split-layout.reverse .case-copy { order: 2; }
.case-number { color: var(--blue); font-size: 10px; letter-spacing: 1.5px; font-weight: 700; margin: 0 0 22px; }
.case-copy h3 { font-size: 34px; line-height: 1.45; letter-spacing: -.7px; margin: 0 0 20px; }
.case-copy > p:not(.case-number) { color: var(--muted); font-size: 14px; }
.feature-list { list-style: none; padding: 0; margin: 26px 0; border-top: 1px solid var(--line); }
.feature-list li { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 12px; }
.feature-list li::before { content: "✓"; color: var(--blue); margin-right: 10px; }
.text-link { color: var(--blue); font-size: 14px; font-weight: 650; display: inline-flex; gap: 25px; align-items: center; padding-top: 8px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0; }
.case-tags span { background: var(--paper); color: var(--muted); font-size: 10px; border-radius: 999px; padding: 5px 10px; }

.private-demo { min-width: 0; background: transparent; padding: 0; display: grid; grid-template-columns: 185px 42px minmax(0, 1fr); align-items: center; row-gap: 18px; overflow: visible; }
.case-visual-intro { grid-column: 1 / -1; min-height: 34px; padding: 0 0 12px; display: flex; justify-content: space-between; align-items: center; gap: 16px; border-bottom: 1px solid #dfe5ef; }
.case-visual-intro > div { display: flex; align-items: center; gap: 9px; }
.case-visual-intro span { color: var(--blue); font-size: 8px; letter-spacing: 1px; font-weight: 700; }
.case-visual-intro strong { font-size: 12px; }
.case-visual-intro small { color: var(--muted); font-size: 8px; }
.phone-stream { text-align: center; }
.demo-phone { width: 180px; height: 390px; margin: auto; border: 2px solid var(--device-edge); border-radius: 22px; background: #edf3ff; position: relative; overflow: hidden; box-shadow: 0 10px 24px #52617b12; }
.demo-phone::before, .demo-phone::after { display: none; }
.private-shot { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top; opacity: 0; }
.private-shot-list { animation: phone-shot-list 9s infinite; }
.private-shot-chat { animation: phone-shot-chat 9s infinite; }
.phone-shot-index { position: absolute; z-index: 3; right: 8px; bottom: 8px; padding: 3px 7px; border: 1px solid #cbd5e7; border-radius: 999px; background: #f5f7fbeb; color: #61718a; font-size: 7px; letter-spacing: .6px; }
.stream-label { display: block; font-size: 9px; color: var(--muted); margin-top: 9px; }
.signal-line { height: 2px; background: linear-gradient(90deg, #aac0f5, var(--blue)); position: relative; }
.signal-line::after { content: ""; position: absolute; right: -2px; top: -4px; border-left: 7px solid var(--blue); border-top: 5px solid transparent; border-bottom: 5px solid transparent; }
.signal-line i { position: absolute; top: -3px; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); animation: signal 2.4s infinite; }
.signal-line i:nth-child(2) { animation-delay: .8s; }
.signal-line i:nth-child(3) { animation-delay: 1.6s; }
.backend-demo { min-width: 0; border: 1px solid #e1e6ee; border-radius: 8px; overflow: hidden; background: #fff; box-shadow: 0 18px 45px #18306416; }
.backend-top { height: 38px; padding: 0 12px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #e6eaf0; background: #fff; color: var(--ink); font-size: 9px; }
.backend-top span { color: var(--muted); display: flex; align-items: center; gap: 6px; }
.backend-top i { width: 6px; height: 6px; border-radius: 50%; background: #2fc171; display: inline-block; }
.backend-shot { aspect-ratio: 2 / 1; overflow: hidden; background: #fff; }
.backend-shot img { width: 100%; height: 100%; object-fit: cover; object-position: center; animation: backend-focus 8s ease-in-out infinite alternate; }
.backend-caption { min-height: 38px; padding: 8px 10px; display: flex; align-items: center; gap: 6px; border-top: 1px solid #e2e7ef; background: #fff; font-size: 7px; }
.backend-caption span { color: #3158b2; font-weight: 650; }
.backend-caption small { margin-left: auto; color: var(--muted); }

.video-showcase { min-width: 0; background: transparent; overflow: visible; }
.video-showcase .case-visual-intro { min-height: 34px; padding: 0 0 12px; border-color: var(--line); }
.case-visual-intro.dark span { color: var(--blue); }
.case-visual-intro.dark strong { color: var(--ink); }
.case-visual-intro.dark small { color: var(--muted); }
.video-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; background: transparent; }
.video-frame { margin: 0; min-width: 0; background: #fff; border: 1px solid #e1e6ee; border-radius: 8px; overflow: hidden; box-shadow: 0 16px 40px #18306412; }
.video-frame video { width: 100%; aspect-ratio: 16 / 9; display: block; object-fit: cover; }
.video-frame figcaption { min-height: 49px; padding: 10px 12px; display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 9px; }
.video-frame figcaption b { color: var(--blue); font-size: 8px; letter-spacing: .8px; white-space: nowrap; }

.mini-try { display: flex; align-items: center; gap: 14px; margin-top: 28px; }
.mini-try img { width: 82px; height: 82px; object-fit: contain; border: 1px solid var(--line); border-radius: 8px; padding: 5px; background: #fff; }
.mini-try strong, .mini-try span { display: block; }
.mini-try strong { font-size: 13px; }
.mini-try span { color: var(--muted); font-size: 10px; }
.mini-screen .case-copy { padding: 38px 0; }
.mini-screen .case-number { margin-bottom: 32px; }
.mini-screen .case-copy h3 { margin-bottom: 28px; }
.mini-screen .case-copy > p:not(.case-number) { margin: 0 0 30px; }
.mini-screen .feature-list { margin: 0 0 34px; }
.mini-screen .feature-list li { padding: 14px 0; }
.mini-screen .mini-try { margin-top: 0; }
.mini-demo { background: transparent; overflow: visible; }
.demo-top { min-height: 36px; padding: 0 0 12px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); font-size: 10px; color: var(--muted); }
.demo-top > span { display: flex; align-items: center; gap: 10px; }
.demo-top b { color: var(--ink); font-size: 10px; }
.demo-top small { font-size: 8px; color: var(--muted); }
.demo-top button { border: 1px solid var(--line); background: #fff; border-radius: 4px; font-size: 9px; padding: 4px 10px; color: var(--muted); }
.mini-stage { min-height: 610px; padding: 24px; display: flex; align-items: center; justify-content: center; gap: 26px; background: transparent; }
.mini-phone { width: 285px; height: 570px; flex: 0 0 285px; border: 2px solid var(--device-edge); border-radius: 22px; background: #fff; overflow: hidden; position: relative; box-shadow: 0 12px 28px #52617b12; }
.mini-phone::after { display: none; }
.mini-slide { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top; opacity: 0; transition: opacity .55s ease; }
.mini-slide.active { opacity: 1; }
.demo-chapters { display: grid; gap: 9px; }
.demo-chapters span { font-size: 9px; color: #948a7d; padding: 7px 9px; border-left: 2px solid #cfc8bc; }
.demo-chapters span.active { color: var(--ink); border-color: var(--blue); font-weight: 650; }
.mini-screen-commerce .mini-phone { width: 263px; flex-basis: 263px; }
.mini-screen-commerce .mini-slide { object-fit: cover; }

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; list-style: none; padding: 0; margin: 0; }
.steps li { border-top: 1px solid #ccd5e4; padding-top: 20px; }
.steps span { font-size: 12px; color: var(--blue); }
.steps h3 { font-size: 17px; margin: 15px 0 10px; }
.steps p { font-size: 12px; color: var(--muted); }

.faq { background: #fff; }
.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 80px; align-items: start; }
.faq-intro { position: sticky; top: 125px; }
.faq-intro > p:not(.eyebrow) { color: var(--muted); font-size: 13px; max-width: 280px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { list-style: none; cursor: pointer; padding: 22px 45px 22px 0; position: relative; font-size: 15px; font-weight: 650; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 18px; color: var(--blue); font-size: 23px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -5px 45px 22px 0; color: var(--muted); font-size: 13px; }

.contact { background: var(--navy); color: #fff; padding-top: 78px; }
.contact .eyebrow { color: #a6b9d4; }
.contact-heading h2 { font-size: 44px; }
.contact-heading > p:last-child { color: #bdcbe0; font-size: 13px; }
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 55px; align-items: start; padding-top: 36px; padding-bottom: 65px; }
.contact-options { border-top: 1px solid #415471; }
.contact-options > button { width: 100%; color: #fff; background: none; border: 0; border-bottom: 1px solid #415471; padding: 15px 0; display: grid; grid-template-columns: 34px 1fr auto; gap: 8px; align-items: center; text-align: left; }
.contact-options button:hover strong { color: #82a5ff; }
.contact-options span { color: #82a5ff; font-size: 10px; }
.contact-options strong { font-size: 13px; }
.contact-options small { color: #91a3bd; font-size: 10px; }
.direct-contact { display: grid; grid-template-columns: 1fr 135px; gap: 25px; align-items: center; margin-top: 30px; }
.direct-title { grid-column: 1 / -1; margin: 0 0 -8px; color: #fff; font-size: 16px; font-weight: 700; }
.direct-contact > div > * { display: block; }
.direct-contact > div > span { color: #a6b9d4; font-size: 10px; }
.direct-contact a { font-size: 22px; font-weight: 650; margin: 5px 0 8px; }
.direct-contact button { background: none; border: 0; border-bottom: 1px solid #637797; color: #fff; padding: 6px 0; font-size: 10px; }
.direct-contact small { color: #b9c8df; font-size: 10px; min-height: 18px; margin-top: 4px; }
.direct-contact figure { margin: 0; color: #c2cde0; }
.qr-crop { display: block; width: 132px; height: 132px; overflow: hidden; background: #fff; }
.qr-crop img { width: 100%; height: 100%; object-fit: cover; object-position: center 55%; transform: scale(1.24); transform-origin: 50% 55%; }
.direct-contact figcaption { padding-top: 7px; font-size: 9px; }
.lead-form { background: #1b2f50; color: #fff; border: 1px solid #3b4f70; border-radius: 10px; padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; box-shadow: none; }
.form-head { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; padding-bottom: 14px; border-bottom: 1px solid #405473; }
.form-head span { font-size: 18px; font-weight: 700; }
.form-head small { color: #a6b9d4; font-size: 10px; }
.lead-form label { font-size: 11px; color: #c5d1e3; }
.lead-form label b { color: #e25151; }
.lead-form input, .lead-form select, .lead-form textarea { width: 100%; margin-top: 6px; border: 1px solid #4a5e7d; border-radius: 6px; padding: 11px 12px; color: #fff; background: #142643; font-size: 13px; }
.lead-form input::placeholder, .lead-form textarea::placeholder { color: #8192ad; }
.lead-form select { color-scheme: dark; }
.lead-form textarea, .lead-form label:nth-of-type(5) { grid-column: 1 / -1; resize: vertical; }
.lead-form input:invalid:not(:placeholder-shown), .lead-form select:invalid.user-touched { border-color: #d45b5b; }
.lead-form .form-honey { display: none; }
.submit-button { grid-column: 1 / -1; width: 100%; cursor: pointer; }
.form-status { grid-column: 1 / -1; color: #a6b9d4; font-size: 10px; margin: -4px 0 0; }
.form-status.success { margin-top: 0; padding: 10px 12px; border: 1px solid #bfe7cf; border-radius: 6px; background: #effaf3; color: #167542; font-size: 11px; }
.form-status.error { color: #bf3c3c; }
footer { border-top: 1px solid #415471; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 16px 28px; padding-top: 24px; padding-bottom: 24px; font-size: 11px; color: #a6b9d4; }
footer > span:nth-child(2) { justify-self: center; }
footer .footer-brand { font-size: 15px; font-weight: 650; color: #fff; }
footer .icp-link { grid-column: 1 / -1; justify-self: center; color: #a6b9d4; font-size: 10px; font-weight: 400; transition: color .2s ease; }
footer .icp-link:hover { color: #fff; }

@keyframes phone-shot-list { 0%, 42% { opacity: 1; } 48%, 92% { opacity: 0; } 100% { opacity: 1; } }
@keyframes phone-shot-chat { 0%, 42% { opacity: 0; } 48%, 92% { opacity: 1; } 100% { opacity: 0; } }
@keyframes signal { 0% { left: 0; opacity: 0; } 20% { opacity: 1; } 100% { left: calc(100% - 6px); opacity: 0; } }
@keyframes backend-focus { from { transform: scale(1); } to { transform: scale(1.025); } }
@keyframes showcase-float-left { 0%, 100% { transform: rotateZ(-7deg) translateY(0) translateZ(42px); } 50% { transform: rotateZ(-6.2deg) translateY(-6px) translateZ(48px); } }
@keyframes showcase-float-right { 0%, 100% { transform: rotateZ(7deg) translateY(0) translateZ(28px); } 50% { transform: rotateZ(6.2deg) translateY(-7px) translateZ(34px); } }
@keyframes data-wave { to { stroke-dashoffset: -30; } }
@keyframes model-breathe { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }

@media (min-width: 1450px) { header { padding-left: calc((100% - 1280px) / 2); padding-right: calc((100% - 1280px) / 2); } }

@media (max-width: 1100px) {
  .hero-grid { gap: 30px; }
  .split-layout, .split-layout.reverse { grid-template-columns: 1fr; gap: 38px; }
  .split-layout.reverse .case-copy { order: 0; }
  .case-copy { max-width: 650px; }
  .private-demo { max-width: 800px; }
  .video-showcase, .mini-demo { max-width: 800px; width: 100%; }
  .faq-layout { gap: 45px; }
  .contact-layout { gap: 30px; }
}

@media (max-width: 820px) {
  nav { gap: 16px; }
  header nav > a:not(.nav-contact) { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-showcase { max-width: 620px; }
  .problem-grid, .service-grid { grid-template-columns: 1fr; }
  .problem-grid a { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .problem-grid a:last-child { border-bottom: 0; }
  .service-card { padding: 26px; }
  .faq-layout, .contact-layout { grid-template-columns: 1fr; }
  .faq-intro { position: static; }
  .faq-intro > p:not(.eyebrow) { max-width: 500px; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 82px; }
  .wrap { width: calc(100% - 40px); }
  header { height: 72px; padding: 0 20px; }
  .brand img { width: 178px; }
  .nav-contact { font-size: 12px; padding: 8px 10px; }
  .nav-contact span { margin-left: 7px; }
  .hero { padding-top: 36px; }
  h1 { font-size: 52px; letter-spacing: -2px; }
  .hero-copy { font-size: 14px; }
  .actions { margin: 25px 0 20px; }
  .button { padding: 12px 17px; gap: 14px; font-size: 13px; }
  .hero-proof { gap: 9px 16px; }
  .hero-proof span { gap: 6px; font-size: 9px; }
  .hero-proof span::before { width: 5px; height: 5px; flex-basis: 5px; }
  .hero-bottom { margin-top: 30px; }
  .section { padding-top: 58px; padding-bottom: 58px; }
  .section-heading { display: block; margin-bottom: 28px; }
  h2 { font-size: 30px; }
  .section-heading > p { margin-top: 18px; font-size: 13px; }
  .cases-intro { margin-top: 17px; font-size: 12px; line-height: 1.75; }
  .case-jump { justify-content: flex-start; gap: 10px; margin: 18px 0 0; }
  .case-jump a { min-width: 0; flex: 1; padding-top: 7px; gap: 4px; font-size: 9px; }
  .case-jump em, .case-jump a span { font-size: 7px; }
  .problem-grid a { padding: 18px 20px; }
  .service-grid { gap: 18px; }
  .service-facts div { grid-template-columns: 70px 1fr; gap: 8px; }
  .service-note { min-height: 0; }
  .case-screen { padding: 58px 0; }
  .case-copy h3 { font-size: 28px; }
  .private-demo { grid-template-columns: 1fr; gap: 14px; padding: 14px; }
  .demo-phone { width: 170px; height: 368px; border-radius: 23px; border-width: 3px; }
  .signal-line { width: 2px; height: 28px; margin: auto; background: linear-gradient(#aac0f5, var(--blue)); }
  .signal-line::after { right: -4px; top: auto; bottom: -2px; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 7px solid var(--blue); border-bottom: 0; }
  .signal-line i { left: -3px !important; animation: signal-mobile 2.4s infinite; }
  .backend-caption { flex-wrap: wrap; }
  .backend-caption small { width: 100%; margin: 0; }
  .video-grid { grid-template-columns: 1fr; }
  .mini-stage { min-height: 0; padding: 22px 14px; gap: 12px; }
  .mini-phone { width: 230px; height: 460px; flex-basis: 230px; border-radius: 24px; }
  .mini-screen-commerce .mini-phone { width: 213px; flex-basis: 213px; }
  .demo-chapters span { font-size: 7px; padding: 5px; }
  .steps { grid-template-columns: 1fr; gap: 15px; }
  .steps li { display: grid; grid-template-columns: 35px 1fr; column-gap: 8px; padding-top: 15px; }
  .steps span { grid-row: 1 / 3; margin-top: 4px; }
  .steps h3 { margin: 0; }
  .steps p { margin: 4px 0; }
  .faq-list summary { font-size: 14px; padding-right: 35px; }
  .contact-heading h2 { font-size: 34px; }
  .contact-options > button { grid-template-columns: 30px 1fr; }
  .contact-options small { display: none; }
  .lead-form { grid-template-columns: 1fr; padding: 22px; }
  .form-head, .lead-form textarea, .lead-form label:nth-of-type(5), .submit-button, .form-status { grid-column: 1; }
  footer { grid-template-columns: auto 1fr; gap: 12px 20px; }
  footer > span:nth-child(2) { display: none; }
  footer > span:nth-child(3) { justify-self: end; }
  footer .icp-link { grid-column: 1 / -1; }
}

@media (max-width: 430px) {
  h1 { font-size: 47px; }
  .actions { gap: 8px; }
  .actions .button { flex: 1; padding: 11px 10px; gap: 6px; font-size: 11px; white-space: nowrap; }
  .showcase-stage { height: 440px; }
  .showcase-stage::before { inset: 60px 0 5px; }
  .showcase-backend { left: 34px; top: 126px; width: 88%; height: 187px; }
  .showcase-video { right: -2px; top: 49px; width: 50%; transform: rotateZ(6deg); }
  .showcase-phone { border-width: 2px; border-radius: 18px; }
  .showcase-curated { left: 16%; bottom: -2px; width: 107px; height: 232px; }
  .showcase-goods { right: 1%; bottom: -1px; width: 113px; height: 247px; }
  .model-machine { left: 0; top: 50px; width: 62px; height: 94px; padding: 28px 7px 20px; border-width: 2px; border-radius: 17px; }
  .model-machine::before { inset: 4px; border-radius: 12px; }
  .model-speaker { top: 11px; width: 18px; }
  .model-home { bottom: 8px; width: 18px; }
  .model-rack { gap: 4px; }
  .model-rack i { height: 7px; }
  .model-wave { left: 54px; top: 82px; width: 122px; height: 72px; }
  .case-visual-intro { align-items: flex-start; }
  .case-visual-intro > div { display: grid; gap: 1px; }
  .demo-top { height: 58px; }
  .demo-top > span { display: grid; gap: 1px; }
  .mini-stage { align-items: stretch; }
  .mini-phone { width: 212px; height: 425px; flex-basis: 212px; }
  .mini-screen-commerce .mini-phone { width: 196px; flex-basis: 196px; }
  .demo-chapters { gap: 4px; }
  .demo-chapters span { max-width: 74px; }
  .direct-contact { grid-template-columns: 1fr 115px; gap: 15px; }
  .qr-crop { width: 112px; height: 112px; }
}

@keyframes signal-mobile { 0% { top: 0; opacity: 0; } 20% { opacity: 1; } 100% { top: calc(100% - 6px); opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .private-shot, .signal-line i, .backend-shot img, .showcase-goods, .showcase-curated, .model-machine, .model-wave path { animation: none; }
  .private-shot-list { opacity: 0; }
  .private-shot-chat { opacity: 1; }
  .mini-slide { transition: none; }
}