:root{--paper:#f8f6f0;--ink:#34372f;--muted:#72746a;--line:#dbdcd2;--accent:#944c3b;--serif:'Noto Serif KR','AppleMyungjo',serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.9 'Noto Sans KR','Apple SD Gothic Neo',sans-serif;word-break:keep-all;-webkit-font-smoothing:antialiased}h1,h2,h3,p,figure,blockquote,dl,dd{margin:0}a{color:inherit;text-decoration:none}button,textarea{font:inherit}button{cursor:pointer}a,button{touch-action:manipulation}button:focus-visible,a:focus-visible,textarea:focus-visible,[tabindex]:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}::selection{background:#e2d7c5}[hidden]{display:none!important}.wrap{width:calc(100% - 112px);max-width:1152px;margin-inline:auto}.label{font-size:12px;color:var(--accent);font-weight:500;margin-bottom:22px}.site-header{background:var(--paper);position:sticky;top:0;z-index:10}.header-inner{display:flex;align-items:center;height:88px;border-bottom:1px solid var(--line);gap:35px}.brand{font-family:Georgia,'Times New Roman',serif;letter-spacing:-.5px;font-size:25px;white-space:nowrap}.brand em{font-size:22px;color:var(--accent)}nav{margin-left:auto;display:flex;gap:30px;font-size:12px;color:var(--muted)}nav a:hover,.quiet-link:hover{color:var(--accent)}.header-cta{font-size:12px;border-bottom:1px solid var(--ink);padding:2px 0}.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);background:var(--ink);color:var(--paper);padding:13px 24px;min-height:48px;font-size:13px;font-weight:500;border-radius:2px;transition:background .15s}.button:hover{background:#535849}.quiet-link{background:none;border:0;border-bottom:1px solid #b2b4a7;padding:4px 0;font-size:12px;line-height:1.5;color:var(--ink)}.skip{position:fixed;left:20px;top:-100px;background:var(--ink);color:white;padding:10px;z-index:20}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hero{display:grid;grid-template-columns:1fr 1.1fr;gap:42px;align-items:center;padding-block:100px 94px}.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(32px,3.25vw,45px);line-height:1.65;letter-spacing:-2.2px}.hero-description{color:var(--muted);font-size:14px;line-height:2.1;margin-top:29px}.hero-actions{display:flex;align-items:center;gap:25px;margin-top:32px}.launch-note{font-size:11px;color:var(--muted);margin-top:15px}.book-scene{padding:46px 0 25px;position:relative}.book-scene:before{content:'';position:absolute;inset:0 -12px 58px 0;background:#e9e7dc;border-radius:49% 48% 6px 4px;z-index:-1}.open-book{display:grid;grid-template-columns:1fr 1fr;transform:rotate(-5deg);width:100%;min-height:347px;border-bottom:5px solid #ccc6b7;border-left:3px solid #8d4939;border-right:3px solid #8d4939;box-shadow:2px 4px 0 #a7a18e,10px 25px 24px #3d37231c;background:#faf7ee;border-radius:2px 2px 3px 3px}.book-page{padding:24px 22px 30px;position:relative;display:flex;flex-direction:column;min-width:0}.left-page{background:linear-gradient(90deg,#f5f0e4 0%,#faf7ee 85%,#e8e2d5 100%);border-right:1px solid #c4bdac}.right-page{background:linear-gradient(90deg,#dfd8c8 0%,#f7f3e9 7%,#faf7ee 100%)}.page-heading{font-size:7px;color:#8d897f;letter-spacing:.5px;border-bottom:1px solid #dbd5c8;padding-bottom:9px}.book-drawing{width:120px;height:100px;margin:14px auto 4px;color:#8f6848}.book-drawing svg{width:100%;height:100%}.book-question{font-size:8px;color:#8d897f;margin-top:3px}.book-quote{font-family:var(--serif);font-size:16px;line-height:1.9;margin-top:10px;letter-spacing:-.7px}.page-number{position:absolute;bottom:12px;left:0;right:0;text-align:center;font:8px Georgia,serif;color:#a5a092}.book-date{font-size:8px;color:var(--accent);margin-top:46px}.book-page h2{font:500 24px/1.7 var(--serif);letter-spacing:-1px;margin-top:12px}.printed-note{font-size:9px;line-height:2.1;color:#787267;margin-top:20px}.printed-note p+p{margin-top:12px}.book-scene figcaption{font-size:9px;color:#898a7f;text-align:center;margin-top:44px}
.section-intro h2,.memory-copy h2,.signup-section h2{font-family:var(--serif);font-size:31px;font-weight:500;line-height:1.7;letter-spacing:-1.3px}.section-intro>p:not(.label),.memory-copy>p:not(.label){font-size:13px;color:var(--muted);margin-top:22px;line-height:2.05}.section-intro .sample-note,.memory-copy .sample-note{font-size:10px!important;line-height:1.9!important;margin-top:30px!important}.rhythm{padding-block:58px 94px;border-top:1px solid var(--line)}.rhythm .section-intro{display:grid;grid-template-columns:1fr 1fr;align-items:end}.rhythm .section-intro .label{grid-column:1/-1}.rhythm .section-intro>p:last-child{margin:0;padding-left:40px}.rhythm-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:44px;margin-top:50px}.rhythm-columns article{border-top:1px solid #aeb1a1;padding-top:20px}.interval{font-size:12px;color:var(--accent)}.rhythm-columns h3{font-size:18px;font-weight:500;margin:9px 0 12px;letter-spacing:-.6px}.rhythm-columns article>p:last-child{font-size:12px;color:var(--muted);line-height:2}
.memory-section{background:#eeeee5;padding-block:80px}.memory-layout{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.memory-example{border-top:1px solid #aeb1a1;padding-top:24px}.memory-question{font-size:15px}.age-tabs{display:flex;gap:26px;margin-top:22px;border-bottom:1px solid #d3d5c8}.age-tabs button{border:0;background:none;color:#8a8c7f;font-size:12px;padding:8px 0 10px;border-bottom:2px solid transparent;margin-bottom:-1px;min-width:36px}.age-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink)}#age-panel{padding-block:32px 0;min-height:206px}#age-answer{font-family:var(--serif);font-size:24px;line-height:1.8;letter-spacing:-.7px}.parent-note{margin-top:27px;max-width:380px}.parent-note>span{font-size:10px;color:#858779}.parent-note p{font-size:12px;color:var(--muted);line-height:2;margin-top:6px}
.demo-section{padding-block:100px;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.writing-paper{background:#fffdf7;border:1px solid #e3dfd3;box-shadow:2px 4px 0 #eae6db;padding:30px}.writing-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:#818373;margin-bottom:30px}.writing-top button{background:none;border:0;border-bottom:1px solid #b6b8ac;color:var(--muted);font-size:11px;padding:0 0 2px}#demo-question{display:block;font-family:var(--serif);font-size:20px;line-height:1.7;letter-spacing:-.5px}textarea{display:block;width:100%;height:125px;resize:vertical;margin-top:20px;background:transparent;border:0;border-bottom:1px solid #d9dbce;border-radius:0;font-size:13px;padding:8px 0;line-height:2;color:var(--ink)}textarea::placeholder{color:#a0a294}.input-meta{display:flex;justify-content:space-between;gap:12px;font-size:10px;color:#8a8c7e;margin:10px 0 27px}.writing-paper .button{min-height:42px;font-size:12px;padding:9px 20px}.sample-note{font-size:10px;line-height:1.9;color:var(--muted)}#demo-result h3{font-family:var(--serif);font-weight:500;font-size:22px}#result-question{font-size:12px;color:var(--muted);margin-top:25px}#result-answer{font-family:var(--serif);font-size:22px;line-height:1.8;margin:20px 0;white-space:pre-wrap;overflow-wrap:anywhere}#demo-result .quiet-link{margin-top:20px}
.subscription-section{padding-block:80px;background:#e9e5da}.subscription-layout{display:grid;grid-template-columns:1fr 1fr;gap:80px}.subscription-details h3{font-size:14px;font-weight:600}.subscription-details dl{margin-top:18px;border-top:1px solid #b7b6a5}.subscription-details dl>div{display:grid;grid-template-columns:95px 1fr;padding:15px 0;border-bottom:1px solid #cecebf;font-size:13px}.subscription-details dt{color:var(--muted);font-size:12px}.subscription-details dd span{font-size:11px;color:var(--muted)}.included-note{font-size:11px;color:#696c5c;margin-top:15px}.separate{margin-top:35px}.separate p{display:flex;flex-direction:column;margin-top:17px;gap:3px}.separate strong{font-size:12px;font-weight:500}.separate p span{font-size:11px;color:var(--muted)}
.faq-section{display:grid;grid-template-columns:1fr 1fr;gap:80px;padding-block:100px}.faq-list{border-top:1px solid #aeb1a1}.faq-list details{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;padding:20px 25px 20px 0;font-size:13px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:'+';position:absolute;right:0;color:#888c7a;font-size:18px;font-weight:400;top:15px}details[open] summary:after{content:'−'}.faq-list details>p{font-size:12px;line-height:2;color:var(--muted);padding:0 24px 22px 0}.signup-section{text-align:center;padding-block:65px 85px;border-top:1px solid var(--line)}.signup-section h2{font-size:32px}.signup-section .button{margin-top:28px}.signup-section .sample-note{margin-top:16px}footer{border-top:1px solid var(--line);padding-block:28px;display:flex;align-items:center;gap:28px}footer .brand{font-size:20px}footer .brand em{font-size:18px}footer>span,footer>a:not(.brand),footer small{font-size:10px;color:var(--muted)}footer>a:not(.brand){margin-left:auto}dialog{border:1px solid var(--line);padding:32px;max-width:calc(100% - 40px);background:var(--paper);color:var(--ink)}dialog h2{font-size:20px}dialog p{margin:15px 0;font-size:13px}dialog::backdrop{background:#34372f55}
@media(min-width:1500px){.hero{padding-block:120px}.hero h1{font-size:46px}}
@media(max-width:1000px){.wrap{width:calc(100% - 64px)}.header-inner{gap:22px}nav{gap:18px;font-size:11px}.brand{font-size:23px}.hero{gap:28px;padding-block:72px}.hero h1{font-size:33px}.hero .label{font-size:10px}.hero-description{font-size:12px}.book-page{padding:20px 15px 28px}.book-quote{font-size:13px}.book-page h2{font-size:22px}.book-drawing{width:100px;height:95px}.printed-note{font-size:8px}.page-heading{font-size:6px}.open-book{min-height:335px}.memory-layout,.demo-section,.subscription-layout,.faq-section{gap:45px}.section-intro h2,.memory-copy h2{font-size:27px}.rhythm-columns{gap:25px}.rhythm-columns h3{font-size:16px}.rhythm-columns article>p:last-child{font-size:11px}.writing-paper{padding:24px}.hero-actions{gap:18px}.hero-actions .button{font-size:12px;padding:12px 20px}}
@media(max-width:700px){html{scroll-padding-top:85px}.wrap{width:calc(100% - 44px)}.header-inner{height:70px;gap:15px;justify-content:space-between}.brand{font-size:23px}.brand em{font-size:20px}nav{display:none}.header-cta{font-size:11px}.hero{display:flex;flex-direction:column;align-items:stretch;gap:15px;padding-block:42px 45px}.hero h1{font-size:34px;line-height:1.65;letter-spacing:-1.8px}.hero .label{font-size:10px;margin-bottom:19px}.hero-description{font-size:12px;margin-top:22px}.hero-actions{margin-top:25px;gap:22px}.hero-actions .button{padding:12px 20px}.hero-actions .quiet-link{font-size:11px}.launch-note{font-size:10px}.book-scene{margin:28px 6px 0;padding:30px 0 0}.book-scene:before{inset:0 -6px 45px -6px}.open-book{min-height:300px}.book-page{padding:17px 14px 28px}.book-quote{font-size:13px;letter-spacing:-.6px}.book-drawing{width:90px;height:84px;margin-top:18px}.book-question{font-size:7px}.book-page h2{font-size:20px}.book-date{margin-top:35px;font-size:7px}.printed-note{font-size:8px;letter-spacing:-.1px;margin-top:15px}.page-heading{font-size:6px;letter-spacing:0}.book-scene figcaption{font-size:8px;margin-top:29px}.rhythm{padding-block:38px 55px}.rhythm .section-intro{display:block}.section-intro h2,.memory-copy h2,.signup-section h2{font-size:27px;letter-spacing:-1.1px}.label{font-size:11px;margin-bottom:18px}.rhythm .section-intro>p:last-child{padding:0;margin-top:20px}.rhythm-columns{grid-template-columns:1fr;gap:25px;margin-top:30px}.rhythm-columns article{padding-top:17px}.interval{font-size:11px}.rhythm-columns h3{font-size:18px;margin-top:6px;margin-bottom:9px}.rhythm-columns article>p:last-child{font-size:12px}.memory-section,.subscription-section{padding-block:50px}.memory-layout,.demo-section,.subscription-layout,.faq-section{grid-template-columns:1fr;gap:34px}.section-intro>p:not(.label),.memory-copy>p:not(.label){font-size:12px;margin-top:20px}.memory-copy .sample-note{margin-top:20px!important}.memory-example{padding-top:20px}.memory-question{font-size:14px}#age-answer{font-size:23px}#age-panel{min-height:190px}.demo-section{padding-block:55px;gap:25px}.writing-paper{padding:25px 21px}#demo-question{font-size:19px}.writing-top{margin-bottom:24px}.subscription-details dl>div{grid-template-columns:88px 1fr}.subscription-details h3{font-size:14px}.included-note{font-size:10px}.faq-section{padding-block:55px;gap:28px}.faq-section h2 br{display:none}summary{font-size:12px;padding-block:18px}.faq-list details>p{font-size:12px}.signup-section{padding-block:45px 55px}.signup-section h2{font-size:26px}.signup-section .sample-note{font-size:9px;max-width:280px;margin-inline:auto}footer{flex-wrap:wrap;gap:8px 20px;padding-block:25px}footer .brand{font-size:21px}footer>span{display:none}footer>a:not(.brand){margin-left:auto}footer small{width:100%;font-size:9px}}
@media(max-width:360px){.wrap{width:calc(100% - 36px)}.hero h1{font-size:30px}.book-page{padding-inline:11px}.book-quote{font-size:12px}.book-page h2{font-size:18px}.printed-note{font-size:7px}.open-book{min-height:285px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.signup-form{max-width:560px;margin:30px auto 20px;text-align:left}.email-label{display:block;font-size:12px;margin-bottom:9px}.email-row{display:flex;align-items:center;gap:10px}.email-row input{min-width:0;flex:1;background:#fffdf7;border:1px solid #b9bdac;border-radius:2px;font:inherit;font-size:14px;padding:12px;color:var(--ink)}.email-row input,.email-row .button{height:48px;min-height:48px;margin:0}.email-row .button{white-space:nowrap}.button:disabled{opacity:.48;cursor:not-allowed}.email-row input:disabled{background:#eeeee5;color:var(--muted)}.consent-notice{margin:20px 0 16px;border-block:1px solid var(--line)}.consent-notice summary{font-size:12px;padding-block:12px}.consent-notice summary:after{top:8px}.consent-notice dl{font-size:11px;line-height:1.9}.consent-notice dl>div{display:grid;grid-template-columns:100px 1fr;gap:10px;margin:8px 0}.consent-notice dt{color:var(--muted)}.consent-notice>p{font-size:10px;color:var(--muted);padding-block:8px 16px}.consent-check{display:flex;align-items:flex-start;gap:9px;font-size:11px;margin:10px 0;cursor:pointer}.consent-check input{margin:5px 0 0;accent-color:var(--ink);flex-shrink:0}.required-label{font-size:10px;color:var(--muted)}.signup-status{font-size:12px;margin-top:15px;color:var(--accent)}.signup-form .sample-note{font-size:10px;max-width:none;margin:10px 0}.privacy-link{font:inherit;font-size:11px;border:0;border-bottom:1px solid #b2b4a7;padding:0;background:none;color:var(--muted);cursor:pointer}.honeypot{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}#privacy-dialog{max-width:640px;width:calc(100% - 36px);max-height:85vh;overflow:auto}#privacy-dialog h3{font-size:14px;margin-top:25px}#privacy-dialog p{font-size:12px;line-height:2}#privacy-dialog .button{margin-top:15px}
@media(max-width:700px){.email-row{flex-direction:column}.email-row .button{width:100%}.consent-notice dl>div{grid-template-columns:80px 1fr}.consent-check{font-size:11px}footer .privacy-link{font-size:10px}}

.policy-page{max-width:900px;padding-block:45px 80px}.policy-page>h1{font:500 32px/1.7 var(--serif);margin:26px 0}.policy-body{font-size:12px;line-height:2}.policy-body h2{font-size:16px;line-height:1.7;margin:30px 0 12px}.policy-body p{margin:12px 0}.policy-body a,.consent-check a{text-decoration:underline;text-underline-offset:3px}.policy-table-wrap{overflow-x:auto;margin:16px 0}.policy-body table{border-collapse:collapse;width:100%;min-width:580px;font-size:11px;text-align:left}.policy-body th,.policy-body td{border:1px solid var(--line);padding:12px;vertical-align:top}.policy-body th{background:#eeeee5}.policy-sources{padding-left:20px}.policy-body .label{font-size:10px}#privacy-dialog{max-width:920px}#privacy-dialog .policy-body h2{font-size:16px}#analytics-dialog{max-width:600px;width:calc(100% - 36px);max-height:85vh;overflow:auto}#analytics-dialog p{font-size:12px;line-height:2}#analytics-dialog a{text-decoration:underline}.analytics-actions{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin:20px 0}#analytics-dialog>form{margin-top:15px}footer{flex-wrap:wrap}footer .privacy-link{white-space:nowrap}.consent-check a:hover{color:var(--accent)}

/* Beta entry alongside the launch notification path. */
.hero-actions{flex-wrap:wrap}.planned-label{display:inline-block;vertical-align:middle;font:400 10px/1.6 'Noto Sans KR',sans-serif;letter-spacing:0;color:var(--muted);border-bottom:1px solid #b2b4a7;margin-left:5px}.beta-section{display:grid;grid-template-columns:1fr 1fr;gap:80px;padding-block:0 85px}.beta-details{border-top:1px solid #aeb1a1;padding-top:22px}.beta-details h3{font-size:14px;font-weight:500}.beta-details ul{list-style:none;padding:0;margin:15px 0 22px;color:var(--muted);font-size:12px;line-height:2.2}.beta-details li{padding:4px 0}.beta-details li::before{content:'·';margin-right:10px;color:var(--accent)}.beta-scope{font-size:11px;color:var(--muted);line-height:2;border-top:1px solid var(--line);padding-top:18px;margin-bottom:22px}.beta-details .sample-note{margin-top:12px}
@media(max-width:1000px){.beta-section{gap:45px}}
@media(max-width:700px){.hero-actions{gap:15px 20px}.hero-actions .beta-link{font-size:11px}.beta-section{grid-template-columns:1fr;gap:25px;padding-bottom:55px}.beta-details{padding-top:19px}.beta-details ul{font-size:12px}.beta-details .sample-note{font-size:10px}.planned-label{font-size:10px}}