:root{--paper:#f7f2e9;--ink:#30251e;--brown:#885329;--muted:#73695f;--line:#dcd2c5}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button{font:inherit}header{height:94px;padding:0 5.5%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:9px}.brand img{width:35px;height:35px;object-fit:contain}.brand b{font-size:25px;letter-spacing:-1px}.brand span{font-size:14px;border-left:1px solid #bcb1a4;padding-left:12px;margin-left:6px}nav{display:flex;gap:34px;font-size:14px}.small-button{font-size:14px;border:1px solid var(--brown);padding:11px 19px;border-radius:4px}.hero{position:relative;display:grid;grid-template-columns:1.07fr 1fr;min-height:740px;padding:0 0 60px 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7%}.section-top>span{display:none}.reasons{grid-template-columns:1fr;gap:22px;margin-top:35px}.reasons article{border-top:1px solid var(--line);padding-top:20px}.reasons p{max-width:none}.split-heading{display:block}.split-heading>p{margin-top:25px}.demo-layout{grid-template-columns:1fr;gap:28px;margin-top:30px}.step{padding:18px 0}.step h3{font-size:19px}.demo{min-width:0}.memory{min-height:560px;padding:70px 9%}.memory h2{font-size:40px}.privacy{grid-template-columns:1fr;gap:25px}.availability h2{font-size:39px}.platforms{grid-template-columns:repeat(2,1fr);gap:28px}.platforms div:nth-child(2){border:0}footer{flex-wrap:wrap;padding:30px 7%}footer p{width:100%;order:3;margin:0}.desktop{display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Apple system typography and restrained motion */
:root{--system-font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Helvetica Neue",Arial,sans-serif}body,button,h1,h2,.photo-caption,.number,.step>span,.demo h4,.privacy-list article>span{font-family:var(--system-font)}h1,h2{font-weight:600;letter-spacing:-.045em;line-height:1.3}.photo-caption{font-weight:500}.photo-caption small{font-family:var(--system-font)}header{position:sticky;top:0;z-index:20;background:rgba(247,242,233,.94);backdrop-filter:blur(18px);transition:box-shadow .3s,height .3s}header.scrolled{box-shadow:0 3px 24px #30251e0c}a,button{transition:color .22s,background .22s,transform .3s,box-shadow .3s}.button:hover,.small-button:hover{transform:translateY(-3px);box-shadow:0 8px 22px #88532920}.button:active,.small-button:active{transform:translateY(0) scale(.98)}nav a{position:relative}nav a:after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:1px;background:var(--brown);transform:scaleX(0);transform-origin:left;transition:transform .25s}nav a:hover:after,nav a.current:after{transform:scaleX(1)}.step{position:relative;transition:background .25s,padding .3s,color .25s}.step:hover{background:#ffffff28;padding-left:18px}.step.active{background:#ffffff38;padding-left:18px}.step.active:before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;background:var(--brown);border-radius:2px}.hero-photo>img{transform:scale(1.035);transition:transform 1.2s cubic-bezier(.2,.7,.2,1)}.hero-photo:hover>img{transform:scale(1.07)}.hero-photo .photo-caption{transition:transform .7s}.hero-photo:hover .photo-caption{transform:translateY(-7px)}.reasons article{transition:transform .35s}.reasons article:hover{transform:translateY(-6px)}.platforms div{transition:transform .3s,color .3s}.platforms div:hover{transform:translateY(-4px);color:var(--brown)}.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1);transition-delay:var(--reveal-delay,0ms)}.reveal.visible{opacity:1;transform:translateY(0)}#demo-content.switching{animation:demo-enter .42s ease both}@keyframes demo-enter{from{opacity:.25;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.hero-copy{animation:hero-enter .9s ease both}.hero-photo{animation:hero-enter 1.1s .1s ease both}@keyframes hero-enter{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.reading-progress{position:fixed;top:0;left:0;height:2px;background:var(--brown);width:100%;transform:scaleX(0);transform-origin:left;z-index:30;pointer-events:none}@media(max-width:800px){h1{font-size:40px}.step:hover,.step.active{padding-left:12px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}.hero-photo>img,.hero-photo:hover>img,.hero-photo:hover .photo-caption{transform:none}}
/* A richer, product-led presentation */
.hero{background:#f9f5ef;min-height:700px}.hero-copy{padding-top:50px}.hero h1{font-size:clamp(40px,4.8vw,72px)}.hero-photo{height:650px;margin:24px 24px 0 0;border-radius:110px 8px 8px 8px}.hero-photo>img{object-position:50% 58%}.photo-caption{display:none}.archive-preview{position:absolute;left:25px;right:25px;bottom:30px;background:rgba(255,253,248,.96);padding:23px;border:1px solid #ffffffa8;border-radius:10px;box-shadow:0 15px 45px #452c1c26;animation:hero-enter 1s .5s both}.archive-preview>div:first-child{display:flex;justify-content:space-between;gap:12px;margin-bottom:17px}.preview-label{font-size:12px;color:var(--brown)}.preview-status{font-size:12px;color:var(--muted)}.archive-preview strong{font-size:23px;font-weight:600}.archive-preview p{font-size:14px;color:var(--muted);margin:8px 0}.preview-tags{display:flex;gap:8px;margin-top:12px}.preview-tags span{font-size:12px;padding:5px 10px;background:#ece3d6;border-radius:4px}.preview-tags span:nth-child(2){background:#e5eadd;color:#45543a}.preview-tags span:nth-child(3){background:#efe2de;color:#7c4d42}.why{padding-bottom:85px}.scene-switch{display:flex;gap:12px;margin-top:40px;flex-wrap:wrap}.scene-switch button{background:transparent;border:1px solid #cdbdab;border-radius:30px;padding:12px 18px;color:var(--muted);cursor:pointer;font-size:14px}.scene-switch button[aria-pressed=true]{background:#30251e;color:#fff9ef;border-color:#30251e}.scene-result{position:relative;background:#e9dfd0;border-radius:9px;margin-top:22px;padding:30px 35px;min-height:200px}.scene-result>span{font-size:12px;color:var(--brown);letter-spacing:1px}.scene-result h3{font-size:28px;margin:15px 0 10px;font-weight:600}.scene-result p{max-width:660px;color:var(--muted);font-size:15px}.scene-result a{display:inline-block;border-bottom:1px solid var(--brown);font-size:14px;padding-bottom:3px}.reasons{gap:20px;margin-top:36px}.reasons article{padding:25px;border-radius:8px;background:#efe5d7;border-top:3px solid #ba8b54}.reasons article:nth-child(2){background:#e7e9de;border-color:#7a8667}.reasons article:nth-child(3){background:#eeded8;border-color:#aa786c}.reasons h3{font-weight:600}.experience{background:#302820;color:#fff7e9}.experience .eyebrow,.experience .section-top>span,.experience em{color:#dab48b}.split-heading>p{color:#c2b4a6}.demo-layout{grid-template-columns:.85fr 1.15fr;gap:6%}.step{border-color:#6b5948;color:#c6b7a8}.step.active{color:#f2cea4;background:#ffffff09}.step.active:before{background:#d5a16d}.step:hover{background:#ffffff09}.demo{color:var(--ink);border:1px solid #bca993;box-shadow:0 20px 65px #0003}.demo-action{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-top:1px solid var(--line);gap:12px}.demo-action>span{font-size:12px;color:var(--muted)}.demo-action button{background:var(--brown);color:white;border:0;border-radius:5px;padding:12px 15px;font-size:14px;cursor:pointer}.demo-action button:hover{background:#70401f;transform:translateY(-2px)}.demo .sample{border-left:3px solid #b6814f}.memory{min-height:570px}.privacy{background:#fffaf2}.availability{background:#e5d2b8}.availability h2{font-weight:600}.platforms{background:#ffffff33;border-radius:8px;padding:28px 0}.availability-note{margin-top:25px}footer{background:#302820;color:#fff6e6}footer p,footer>span{color:#d1bfae}@media(max-width:800px){.hero{padding-bottom:60px}.hero-copy{padding:44px 7% 32px}.hero h1{font-size:clamp(34px,6.2vw,45px)}.hero-note{margin-top:26px}.hero-photo{height:430px;margin:0 6%;border-radius:60px 6px 6px 6px}.archive-preview{bottom:18px;left:18px;right:18px;padding:18px}.archive-preview strong{font-size:20px}.scene-switch{gap:8px;margin-top:28px}.scene-switch button{font-size:12px;padding:10px 12px}.scene-result{padding:24px}.scene-result h3{font-size:23px}.reasons{grid-template-columns:1fr;gap:12px;margin-top:24px}.reasons article{padding:20px}.reasons article h3{margin-top:10px}.reasons article p{margin-bottom:0}.demo-layout{display:flex;flex-direction:column;gap:18px}.steps{display:flex;width:100%;gap:8px}.step,.step:hover,.step.active{padding:14px 8px;display:block;border:1px solid #6b5948;border-radius:5px;width:33.333%}.step h3{font-size:14px;margin:8px 0 0}.step p{display:none}.step>span{font-size:12px}.step.active:before{display:none}.demo{width:100%}.demo-action{padding:16px}.demo-action>span{font-size:12px}#demo-content{padding:24px;min-height:265px}.privacy{gap:20px}.memory{min-height:490px}}@media(max-width:400px){.demo-action{align-items:start;flex-direction:column}.scene-switch button{font-size:12px}.archive-preview p{font-size:12px}}
/* Interactive open-book album */
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6px);width:12px;top:0;bottom:0;background:linear-gradient(90deg,transparent,#57402735,transparent);pointer-events:none;z-index:5}.book-hit{position:absolute;top:0;bottom:0;width:50%;border:0;background:transparent;cursor:pointer;z-index:6;border-radius:4px}.book-prev{left:0}.book-next{right:0}.book-hit:focus-visible{outline-offset:-6px}.book-controls{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:30px}.book-controls>button{border:0;border-bottom:1px solid #baa58a;background:transparent;padding:5px 0;color:var(--brown);font-size:12px;cursor:pointer}.book-controls>button:hover{color:#5f351c;transform:translateY(-2px)}#book-counter{font-size:12px;font-variant-numeric:tabular-nums;color:var(--muted)}.book-dots{display:flex;gap:7px}.book-dots button{width:20px;height:24px;border:0;background:transparent;position:relative;cursor:pointer;padding:0}.book-dots button:after{content:"";position:absolute;top:9px;left:5px;width:7px;height:7px;background:#cabbab;border-radius:50%;transition:background .2s,transform .2s}.book-dots button[aria-pressed=true]:after{background:var(--brown);transform:scale(1.3)}.book-instruction{text-align:center;color:var(--muted);font-size:12px;margin-top:14px}.book-flip{position:absolute;top:0;bottom:0;left:50%;width:50%;transform-origin:left center;transform-style:preserve-3d;pointer-events:none;z-index:8;visibility:hidden}.flip-front,.flip-back{position:absolute;inset:0;backface-visibility:hidden;border-radius:0 8px 8px 0;background:#fff9ed}.flip-front{padding:22px 20px 80px 17px;background:linear-gradient(90deg,#e3d4bd,#fff9ed 12%)}.flip-front>img{width:100%;height:100%;object-fit:cover;object-position:50% 55%;border:5px solid #fffdf7}.flip-back{transform:rotateY(180deg);background:linear-gradient(90deg,#eddfcb,#fff9ed 25%);box-shadow:inset -12px 0 20px #78543415}.book.flipping .book-flip{visibility:visible}.book.flipping .book-hit{pointer-events:none}@media(min-width:1400px){.book{height:540px}.book-left{padding:40px 30px}.book-kicker{margin-bottom:65px}.book-left h2{font-size:32px}}@media(max-width:1050px) and (min-width:801px){.hero{padding-left:5%;grid-template-columns:.8fr 1.2fr}.hero h1{font-size:43px}.book{height:430px}.book-left{padding:25px 18px}.book-left h2{font-size:22px}.book-kicker{font-size:9px;margin-bottom:35px}.book-left>p:not(.book-kicker){font-size:12px}.book-right,.flip-front{padding:16px 14px 75px 12px}.book-page-number{left:18px}.book-controls{gap:12px}.actions{flex-direction:column;align-items:start;gap:18px}}@media(max-width:800px){.hero{display:block;padding-right:0}.hero-photo.book-stage{padding:15px 0 24px;margin:0 5%}.book{height:410px}.book-left{padding:28px 20px 45px}.book-left h2{font-size:24px}.book-kicker{font-size:9px;margin-bottom:35px}.book-left>p:not(.book-kicker){font-size:13px}.book-right,.flip-front{padding:17px 14px 75px 12px}.book-page-number{font-size:9px;left:20px}.book-controls{margin-top:25px}}@media(max-width:480px){.book{height:345px}.book-left{padding:23px 13px 40px}.book-kicker{font-size:8px;letter-spacing:1px;margin-bottom:24px}.book-chapter{font-size:10px;margin-bottom:12px}.book-left h2{font-size:19px}.book-left>p:not(.book-kicker){font-size:12px;line-height:1.75;margin:13px 0 7px}.book-left .preview-tags span{font-size:10px;padding:4px 6px}.book-page-number{left:13px;font-size:8px;letter-spacing:1px}.book-right,.flip-front{padding:13px 10px 73px}.book-right>img,.flip-front>img{border-width:3px}.book-photo-caption{left:12px;right:10px;bottom:20px}.book-photo-caption span{font-size:12px}.book-controls{gap:13px}.book-instruction{font-size:11px}}
.book-left,.book-right{height:100%;min-height:0;overflow:hidden}.book-right>img,.flip-front>img{display:block;min-height:0}.book{grid-template-rows:minmax(0,1fr)}
/* Four chapters, four distinct visual treatments */
.book{--chapter-paper:#fff9ed;--chapter-fold:#d9c8ac;--chapter-ink:#30251e;--chapter-accent:#885329;--chapter-cover:#8a5b36;--chapter-muted:#73695f;--chapter-tag:#ece3d6}.book:before{background:var(--chapter-cover);transition:background .5s}.book-left{background:linear-gradient(90deg,var(--chapter-paper) 85%,var(--chapter-fold));color:var(--chapter-ink)}.book-right,.flip-front{background:linear-gradient(90deg,var(--chapter-fold),var(--chapter-paper) 12%)}.book-kicker,.book-chapter{color:var(--chapter-accent)}.book-left>p:not(.book-kicker),.book-photo-caption small,.book-page-number{color:var(--chapter-muted)}.book-left .preview-tags span{background:var(--chapter-tag);color:var(--chapter-accent)}.book-photo-caption span{color:var(--chapter-ink)}.book-left,.book-right,.book-photo-caption{transition:background .5s,color .5s}.flip-back{background:linear-gradient(90deg,var(--chapter-fold),var(--chapter-paper) 25%)}
.book[data-theme="1"]{--chapter-paper:#edf3f5;--chapter-fold:#afc2cd;--chapter-ink:#18394b;--chapter-accent:#29617c;--chapter-cover:#244c62;--chapter-muted:#4a6573;--chapter-tag:#d7e6ec}.book[data-theme="1"] .book-left{background:repeating-linear-gradient(0deg,transparent 0px,transparent 27px,#7395a519 28px),linear-gradient(90deg,#edf3f5 85%,#afc2cd)}.book[data-theme="1"] .book-right{padding-top:65px;padding-bottom:105px}.book[data-theme="1"] .book-right>img{height:100%;transform:rotate(-4deg);border-width:9px;box-shadow:0 9px 18px #18394b35;object-position:85% center}.book[data-theme="1"] .book-photo-caption{bottom:32px;border-top:1px dashed #7697a7;padding-top:14px}.book[data-theme="1"] .book-kicker{letter-spacing:2.5px}.book[data-theme="1"] .book-chapter{border:1px solid #7b9baa;padding:5px 8px;transform:rotate(-2deg)}
.book[data-theme="2"]{--chapter-paper:#f1dfc2;--chapter-fold:#c3a072;--chapter-ink:#563822;--chapter-accent:#8c4b2d;--chapter-cover:#68402b;--chapter-muted:#7e5b3c;--chapter-tag:#dec29a}.book[data-theme="2"] .book-left{background:repeating-linear-gradient(0deg,transparent 0px,transparent 31px,#9b6e3520 32px),linear-gradient(90deg,#f1dfc2 85%,#c3a072)}.book[data-theme="2"] .book-left h2{font-weight:500;line-height:1.6}.book[data-theme="2"] .book-chapter{border-bottom:1px solid #a87948;padding-bottom:10px}.book[data-theme="2"] .book-right{padding-top:44px;padding-bottom:98px}.book[data-theme="2"] .book-right>img{transform:rotate(4deg);border-color:#f9eacb;border-width:10px 10px 26px;filter:sepia(.15);box-shadow:3px 8px 18px #64401f30}.book[data-theme="2"] .book-photo-caption{border-left:3px solid #a37341;padding-left:12px;bottom:24px}.book[data-theme="2"] .book-page-number{letter-spacing:2px}
.book[data-theme="3"]{--chapter-paper:#f0f5ef;--chapter-fold:#b5c8b2;--chapter-ink:#24412d;--chapter-accent:#476e41;--chapter-cover:#36513c;--chapter-muted:#536c52;--chapter-tag:#dce8d7}.book[data-theme="3"] .book-right{padding:0 0 80px 0;background:#f0f5ef}.book[data-theme="3"] .book-right>img{border:0;border-radius:0 8px 0 0;box-shadow:none;object-position:62% center}.book[data-theme="3"] .book-photo-caption{left:20px;bottom:20px}.book[data-theme="3"] .book-kicker{border-bottom:1px solid #aac1a2;padding-bottom:14px;width:100%;margin-bottom:32px}.book[data-theme="3"] .book-left h2{font-weight:500}.book[data-theme="3"] .preview-tags span{border-radius:20px}.book[data-theme="3"] .book-page-number{color:#476e41}
@media(max-width:480px){.book[data-theme="1"] .book-right{padding-top:42px;padding-bottom:94px}.book[data-theme="1"] .book-right>img{border-width:5px}.book[data-theme="1"] .book-chapter{font-size:9px;padding:4px}.book[data-theme="2"] .book-right{padding-top:30px;padding-bottom:89px}.book[data-theme="2"] .book-right>img{border-width:5px 5px 17px}.book[data-theme="3"] .book-kicker{margin-bottom:19px;padding-bottom:10px}.book[data-theme="3"] .book-photo-caption{left:12px}.book[data-theme="1"] .book-photo-caption{bottom:22px}}
button.small-button{background:transparent;color:var(--brown);cursor:pointer}#experience-dialog{width:min(1000px,calc(100% - 40px));max-height:calc(100dvh - 48px);padding:0;border:1px solid #d8c7b2;border-radius:16px;background:#fffaf2;color:var(--ink);box-shadow:0 30px 110px #21150a45;overflow:auto}#experience-dialog::backdrop{background:#21170fb3;backdrop-filter:blur(6px)}#experience-dialog[open]{animation:modal-enter .3s ease both}.experience-modal{padding:38px}.modal-heading{display:flex;align-items:start;justify-content:space-between;gap:20px}.modal-heading .eyebrow{margin-bottom:14px}.modal-heading h2{font-size:32px;letter-spacing:-1px}.modal-close{border:1px solid #cbbbA7;background:transparent;border-radius:30px;padding:9px 15px;color:var(--muted);font-size:14px;cursor:pointer}.modal-close:hover{background:#efe4d5;color:var(--brown)}.modal-intro{font-size:15px;color:var(--muted);margin:17px 0 28px}.qr-platforms{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.qr-platforms article{text-align:center;background:#f0e6d8;padding:22px 14px;border-radius:10px}.qr-platforms article:nth-child(2){background:#e7ecdf}.qr-platforms article:nth-child(3){background:#e7edf1}.qr-platforms article:nth-child(4){background:#ede8e1}.qr-platforms h3{font-size:18px;font-weight:600;margin:0 0 8px}.qr-platforms p{font-size:12px;color:var(--muted);margin:0 0 20px}.qr-slot{aspect-ratio:1;width:100%;max-width:180px;margin:0 auto 17px;border:1px dashed #b9a78d;border-radius:6px;background:#fffdf8;display:grid;place-items:center;padding:8px}.qr-slot span{font-size:12px;color:#796b5b}.qr-slot img{width:100%;height:100%;object-fit:contain}.qr-platforms small{font-size:12px;color:var(--muted)}body.modal-open{overflow:hidden}@keyframes modal-enter{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@media(max-width:800px){.experience-modal{padding:26px 20px}.modal-heading h2{font-size:25px}.modal-heading .eyebrow{font-size:9px}.modal-close{font-size:12px;padding:8px 12px}.qr-platforms{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.qr-platforms article{padding:19px 12px}.qr-platforms h3{font-size:16px}.qr-platforms p{font-size:12px}.qr-slot{max-width:160px}.modal-intro{font-size:14px}}

.qr-platforms p{min-height:46px}.qr-platforms small{display:block;min-height:36px}