:root{--ink:#101a2e;--muted:#61718c;--line:#dce4ef;--paper:#f6f8fb;--blue:#1768e5;--blue-deep:#0a3f98;--red:#c83245;--red-deep:#8f1528;--green:#087f5b}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;letter-spacing:0}a{color:inherit;text-decoration:none}.topbar{height:74px;padding:0 max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;gap:34px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:fixed;inset:0 0 auto;z-index:20}.brand{display:flex;align-items:center;gap:11px;min-width:230px}.brand img{width:42px;height:42px;object-fit:contain}.brand span{display:flex;flex-direction:column}.brand strong{font-size:20px}.brand small{font-size:12px;color:var(--muted);margin-top:2px}.topbar nav{display:flex;gap:28px;margin-left:auto}.topbar nav a{font-size:14px;color:#34445f}.topbar nav a:hover{color:var(--blue)}.button{height:48px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:6px;font-weight:700;transition:.2s ease}.button:hover{transform:translateY(-1px)}.button-primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(23,104,229,.24)}.button-light{background:#fff;color:var(--ink);border-color:#fff}.button.compact{height:40px;padding:0 17px;font-size:14px}.hero{height:min(900px,94vh);min-height:680px;position:relative;overflow:hidden;color:#fff}.hero-media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 42%}.hero-shade{position:absolute;inset:0;background:rgba(3,18,46,.62);box-shadow:inset 58vw 0 120px rgba(3,18,46,.28)}.hero-content{position:relative;z-index:2;width:min(1240px,calc(100% - 48px));margin:auto;padding-top:clamp(150px,20vh,210px)}.eyebrow{font-size:14px;font-weight:700;letter-spacing:0;color:#9bc4ff;margin:0 0 16px}.eyebrow.dark{color:var(--blue)}.hero h1{font-size:clamp(56px,7vw,92px);line-height:1;margin:0 0 24px}.hero-lead{width:min(620px,100%);font-size:20px;line-height:1.8;color:#e7eef9;margin:0}.hero-actions{display:flex;gap:12px;margin-top:34px}.hero-points{display:flex;gap:28px;padding:0;margin:34px 0 0;list-style:none;font-size:14px;color:#d5e2f3}.hero-points li:before{content:"✓";color:#6fe0b2;margin-right:8px}.next-hint{position:absolute;z-index:3;bottom:24px;left:50%;transform:translateX(-50%);font-size:13px;color:#e6edf8}.next-hint span{margin-left:10px}.band{padding:100px max(24px,calc((100vw - 1240px)/2))}.section-heading{max-width:760px;margin-bottom:46px}.section-heading h2{font-size:clamp(32px,4vw,48px);line-height:1.25;margin:0 0 16px}.section-heading>p:last-child,.split-heading>p{font-size:17px;line-height:1.8;color:var(--muted);margin:0}.centered{text-align:center;margin-left:auto;margin-right:auto}.why{background:#fff}.reason-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.reason-grid article{padding:34px 28px 38px;border-right:1px solid var(--line)}.reason-grid article:last-child{border-right:0}.reason-grid span{color:var(--blue);font-weight:700;font-size:13px}.reason-grid h3{font-size:21px;margin:28px 0 13px}.reason-grid p,.feature-list p,.version-copy p,.version-copy li,.steps p{color:var(--muted);line-height:1.75;margin:0;font-size:14px}.features{background:var(--paper)}.split-heading{display:grid;grid-template-columns:1.2fr .8fr;max-width:none;align-items:end;gap:90px}.split-heading h2{margin-bottom:0}.feature-list{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff}.feature-list article{min-height:174px;padding:30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.feature-list article:nth-child(4n){border-right:0}.feature-list article:nth-child(n+5){border-bottom:0}.feature-list b{display:block;font-size:19px;margin-bottom:14px}.notice{border-left:3px solid #ef9a31;padding:14px 18px;margin:28px 0 0;background:#fff8e8;color:#77541d;font-size:13px}.versions{background:#fff}.version-showcase{display:grid;grid-template-columns:1fr 1fr;gap:22px}.version-card{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}.version-image{height:300px;overflow:hidden;background:#eef4fd}.version-image img{width:100%;height:100%;object-fit:cover;object-position:78% center}.red-crop{background:#fff0f2}.red-crop img{object-position:58% center}.version-copy{padding:32px}.version-tag{display:inline-block;padding:6px 10px;border-radius:4px;font-size:12px;font-weight:700;margin-bottom:18px}.blue-version{border-top:5px solid var(--blue)}.blue-version .version-tag{background:#e8f1ff;color:var(--blue-deep)}.red-version{border-top:5px solid var(--red)}.red-version .version-tag{background:#ffebee;color:var(--red-deep)}.version-copy h3{font-size:25px;margin:0 0 12px}.version-copy ul{padding-left:19px;margin:22px 0 0}.version-copy li{margin:8px 0}.comparison-wrap{margin-top:34px;border:1px solid var(--line);overflow:auto}table{border-collapse:collapse;width:100%;min-width:720px}th,td{text-align:left;padding:17px 22px;border-bottom:1px solid var(--line);font-size:14px}th{background:#f1f5fa;font-size:13px}td:nth-child(2),td:nth-child(3),th:nth-child(2),th:nth-child(3){text-align:center}tbody tr:last-child td{border-bottom:0}td strong{color:var(--red)}.workflow{background:#0d1c35;color:#fff}.workflow .section-heading h2{color:#fff}.workflow .eyebrow{color:#85b7ff}.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #34445f}.steps li{display:flex;gap:18px;padding:32px 26px;border-right:1px solid #34445f}.steps li:last-child{border-right:0}.steps span{width:32px;height:32px;display:grid;place-items:center;border:1px solid #609af0;color:#8ebcff;border-radius:50%;flex:0 0 auto}.steps h3{margin:4px 0 10px}.steps p{color:#aebbd0}.faq{background:var(--paper)}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:0 4px;background:#fff}summary{cursor:pointer;padding:23px 20px;font-weight:700;list-style:none}summary:after{content:"+";float:right;color:var(--blue);font-size:22px}details[open] summary:after{content:"−";}details p{margin:0;padding:0 20px 24px;color:var(--muted);line-height:1.8;font-size:14px}.purchase{padding:64px max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;justify-content:space-between;gap:40px;background:var(--blue);color:#fff}.purchase h2{font-size:36px;margin:0 0 12px}.purchase p:last-child{color:#dceaff;line-height:1.7;margin:0;max-width:760px}footer{padding:30px max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);color:var(--muted);font-size:13px}.footer-brand img{width:36px;height:36px}.footer-brand strong{font-size:17px;color:var(--ink)}
@media(max-width:900px){.topbar{padding:0 18px}.topbar nav{display:none}.topbar .compact{margin-left:auto}.hero{min-height:650px;height:88vh}.hero-media{object-position:62% center}.hero-shade{background:rgba(3,18,46,.74)}.hero-content{padding-top:150px}.reason-grid,.feature-list,.version-showcase,.steps{grid-template-columns:1fr 1fr}.reason-grid article:nth-child(2){border-right:0}.reason-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}.feature-list article:nth-child(2n){border-right:0}.feature-list article:nth-child(n+5){border-bottom:1px solid var(--line)}.feature-list article:nth-child(n+7){border-bottom:0}.split-heading{grid-template-columns:1fr;gap:24px}.steps li:nth-child(2){border-right:0}.steps li:nth-child(-n+2){border-bottom:1px solid #34445f}.purchase{align-items:flex-start;flex-direction:column}}
@media(max-width:600px){.topbar{height:66px}.brand{min-width:0}.brand img{width:36px;height:36px}.brand strong{font-size:18px}.brand small{display:none}.button.compact{font-size:13px;padding:0 12px;height:38px}.hero{min-height:690px;height:92vh}.hero-content{width:calc(100% - 36px);padding-top:130px}.hero h1{font-size:54px}.hero-lead{font-size:17px;line-height:1.7}.hero-actions{flex-direction:column;width:100%}.hero-actions .button{width:100%}.hero-points{gap:10px;flex-wrap:wrap}.band{padding:72px 18px}.section-heading h2{font-size:34px}.reason-grid,.feature-list,.version-showcase,.steps{grid-template-columns:1fr}.reason-grid article,.feature-list article,.steps li{border-right:0;border-bottom:1px solid var(--line)}.reason-grid article:last-child,.feature-list article:last-child,.steps li:last-child{border-bottom:0}.feature-list article:nth-child(n){border-bottom:1px solid var(--line)}.feature-list article:last-child{border-bottom:0}.version-image{height:240px}.version-copy{padding:25px 22px}.purchase{padding:52px 18px}.purchase h2{font-size:30px}footer{padding:26px 18px;align-items:flex-start;gap:20px;flex-direction:column}.next-hint{white-space:nowrap}}

body{overflow-x:hidden}.version-image img{display:block;width:100%;height:100%;object-fit:cover}.version-image img{object-position:78% center}.red-crop img{object-position:58% center}

/* Product cards use the actual 2.0 and 3.0 packaging assets as a balanced pair. */
.version-card{box-shadow:0 14px 36px rgba(16,26,46,.08)}
.version-gallery{height:370px;padding:18px;display:grid;grid-template-columns:1fr 1fr;gap:14px;background:#fff;align-items:stretch}
.version-gallery figure{min-width:0;height:334px;margin:0;display:flex;flex-direction:column;align-items:center;justify-content:space-between;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.version-gallery figure img{display:block;width:100%;height:294px;object-fit:contain;object-position:center;background:#fff}
.version-gallery figcaption{height:40px;display:flex;align-items:center;color:var(--muted);font-size:12px}
.red-gallery{background:#fff7f8}
.red-gallery figure:first-child{background:#fff1f3}
.blue-version .version-copy{background:#fff}
.red-version .version-copy{background:#fff}
.version-buy{min-height:94px;padding:14px 22px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line)}
.version-buy div{display:flex;flex-direction:column;gap:3px}
.version-buy strong{font-size:21px;line-height:1.2}
.version-buy span{font-size:13px;color:var(--ink)}
.version-buy small{font-size:12px;color:var(--muted)}
.blue-buy{background:#f4f8ff}.blue-buy strong{color:var(--blue-deep)}
.red-buy{background:#fff4f5}.red-buy strong{color:var(--red-deep)}
.intro-heading{max-width:920px}.intro-heading h2{font-size:clamp(38px,4vw,54px);letter-spacing:.01em}
.qr-trigger{margin-left:auto;flex:0 0 auto;border:0;border-radius:5px;padding:11px 15px;background:#fff;color:var(--blue-deep);font:inherit;font-size:13px;font-weight:700;cursor:pointer;box-shadow:0 4px 12px rgba(16,26,46,.08);transition:transform .2s ease,box-shadow .2s ease}.qr-trigger:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(16,26,46,.14)}.red-buy .qr-trigger{color:var(--red-deep)}
.modal-open{overflow:hidden}.qr-modal[hidden]{display:none}.qr-modal{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:20px}.qr-backdrop{position:absolute;inset:0;background:rgba(10,20,36,.62)}.qr-panel{position:relative;width:min(380px,100%);padding:34px 30px 30px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 24px 70px rgba(0,0,0,.24);animation:modal-in .22s ease both}.qr-panel h2{margin:0 0 8px;font-size:28px}.qr-panel>p:not(.eyebrow){margin:0 0 20px;color:var(--muted);font-size:14px}.qr-panel>img{display:block;width:220px;height:220px;margin:0 auto 22px;padding:10px;border:1px solid var(--line);background:#fff}.qr-panel .button{width:100%}.qr-close{position:absolute;right:12px;top:8px;border:0;background:transparent;color:var(--muted);font-size:30px;line-height:1;cursor:pointer}.reveal-item{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}.reveal-item.is-visible{opacity:1;transform:none}.version-card:nth-child(2),.reason-grid article:nth-child(2),.feature-list article:nth-child(2){transition-delay:.08s}.version-card:nth-child(3),.reason-grid article:nth-child(3),.feature-list article:nth-child(3){transition-delay:.16s}@keyframes modal-in{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.reveal-item{opacity:1;transform:none}}
@media(max-width:600px){.version-gallery{height:300px;padding:12px;gap:10px}.version-gallery figure{height:274px}.version-gallery figure img{height:240px}.version-gallery figcaption{height:34px;font-size:11px}}

/* Light motion keeps the product page lively without distracting from the copy. */
.hero-media{animation:hero-drift 14s ease-in-out infinite alternate;transform-origin:center center}
@keyframes hero-drift{from{transform:scale(1.035) translate3d(-.4%,0,0)}to{transform:scale(1.08) translate3d(.5%,-.4%,0)}}
.version-gallery figure{transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
.version-gallery figure:hover{transform:translateY(-5px);border-color:rgba(23,104,229,.35);box-shadow:0 12px 25px rgba(16,26,46,.14)}
.version-gallery figure img{transition:transform .45s cubic-bezier(.2,.75,.25,1)}
.version-gallery figure:hover img{transform:scale(1.055)}
.feature-list article,.reason-grid article{position:relative;transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,border-color .25s ease}
.feature-list article:hover,.reason-grid article:hover{transform:translateY(-5px);background:#fff;box-shadow:0 12px 28px rgba(16,26,46,.08);z-index:1}
.feature-list article:hover b,.reason-grid article:hover h3{color:var(--blue);transition:color .2s ease}
@media(prefers-reduced-motion:reduce){.hero-media{animation:none!important;transform:none!important}.version-gallery figure,.version-gallery figure img,.feature-list article,.reason-grid article{transition:none!important;transform:none!important}}

/* Keep every package image inside its own area so captions never overlap. */
.version-gallery figure{display:grid;grid-template-rows:minmax(0,1fr) 40px;align-items:stretch;justify-items:stretch}
.version-gallery figure img{min-width:0;min-height:0;width:100%!important;height:100%!important;max-height:100%;object-fit:contain!important;object-position:center;background:#fff}
.version-gallery figcaption{height:auto;justify-content:center;background:#fff;position:relative;z-index:1}
@media(max-width:600px){.version-gallery figure{grid-template-rows:minmax(0,1fr) 34px}.version-gallery figcaption{height:auto}}