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@media(min-width:1500px){.real-device{width:288px}.feature-device{width:275px}.screen-visual{min-height:680px}}
@media(max-width:900px){.real-device{width:242px}.feature-device{width:230px}.screen-visual{min-height:590px}.screen-tabs{gap:25px}.screen-tabs button{min-width:100px}.actual-feature{gap:6%}}
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/* Readability pass after first rendered review. */
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@media(max-width:640px){.review-bar{font-size:9px;gap:8px}.directions button{font-size:9px;padding:5px 6px;min-height:28px;white-space:nowrap}.launch{font-size:10px}.hero-bottom{font-size:8px;letter-spacing:.7px}.section-number{font-size:9px}.section-top p{font-size:11px;max-width:155px}.feature-count{font-size:10px}.feature-note{font-size:10px}.screen-disclaimer{font-size:11px!important}.screen-date{font-size:9px}.real-product-caption{font-size:10px}.expand-screen{font-size:11px}.screen-tabs button{font-size:12px}.screen-tabs button span{font-size:9px}.footer-links{max-width:230px}.footer-links a{font-size:10px}footer.site-footer>.footer-bottom{font-size:9px}.coming-label{font-size:10px}.closing p{font-size:11px}}
/* Paper hero: prevent the light page from washing out the release notice. */
.paper .hero{background:#0c1010}.paper .hero .landscape{opacity:.3}.paper .launch{color:#e3ebda}
/* Paper is the default: a continuous light canvas, including photo sections. */
body.paper{--bg:#f6f7f1;--fg:#203426;--muted:#52644f;--line:#29433124;--lime:#779d31;background:var(--bg);color:var(--fg)}.paper header,.paper .hero{color:var(--fg);background:transparent}.paper header{border-bottom-color:#29433124}.paper header nav,.paper .language{color:#314834}.paper .language span{color:#65785e}.paper .hero{background:#f6f7f1}.paper .hero .landscape{opacity:1;background:linear-gradient(90deg,#f6f7f1f5,#f6f7f1dc),linear-gradient(0deg,#f6f7f1,transparent 48%),url(seoul.webp) center 63%/cover}.paper .hero-copy>p{color:#455b46}.paper .button.primary{background:#29452e;color:#f6f8ef;border-color:#29452e;backdrop-filter:none}.paper .button.primary .dot{background:#c7f85e}.paper .button.primary:hover{background:#385b37}.paper .text-link{border-bottom-color:#48634866;color:#29452e}.paper .launch{color:#405b42}.paper .pulse{background:#537443}.paper .hero-bottom{color:#4c674b}.paper .hero-bottom a{color:#29452e}.paper .real-product-caption{color:#435e40}.paper .real-device{background:linear-gradient(135deg,#d7dfcd,#a8b5a1 40%,#eff3e7);border-color:#8d9e8277;box-shadow:0 25px 60px #33482b24,4px 0 0 #9fac9699,5px 0 0 #d8e1cc}.paper .feature-device{box-shadow:0 17px 45px #33482b1f}.paper .closing{--lime:#779d31;background:#f6f7f1}.paper .closing-landscape{opacity:1;background:linear-gradient(#f6f7f1f2,#f6f7f1dc 70%,#f6f7f1),url(seoul.webp) center 66%/cover}.paper .closing h2{color:#243d2a}.paper .closing p,.paper .coming-label{color:#405b42}.paper .review-bar{background:#e9eedf;color:#3d5437}.paper .directions button[aria-pressed=true]{background:#304b30;color:#f3f6ec}.paper footer.site-footer{background:#f6f7f1}.footer-bottom>a{color:var(--fg);text-decoration:underline;text-underline-offset:4px}.site-footer>.footer-bottom{flex-wrap:wrap;gap:12px 24px}.paper #screen-dialog{background:#f6f7f1;color:#203426;border-color:#80916c66}.paper #screen-dialog::backdrop{background:#dce3d6c9}.paper .dialog-toolbar{background:#f6f7f1ed;border-bottom-color:#80916c44}.paper .dialog-toolbar button{background:#e4ebda;color:#243d2a}.paper #screen-dialog>p{color:#52644f}
/* Four travel chapters organize nine real app screens. */
.screen-picker{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px}.screen-picker button{background:transparent;border:1px solid var(--line);border-radius:22px;padding:9px 14px;font-size:11px;color:var(--muted);min-height:36px}.screen-picker button[aria-pressed=true]{background:#c7f85e;color:#183019;border-color:#c7f85e}.paper .screen-picker button[aria-pressed=true]{background:#29452e;border-color:#29452e;color:#f6f8ef}.feature-bullets{list-style:none;padding:0;margin:23px 0;display:flex;flex-wrap:wrap;gap:10px 18px}.feature-bullets li{font-size:11px;color:var(--fg);display:flex;align-items:center;gap:7px}.feature-bullets li:before{content:'';width:4px;height:4px;border-radius:50%;background:var(--lime)}.screen-boundary{font-size:10px!important;line-height:1.8!important;color:var(--muted)!important;border-top:1px solid var(--line);padding-top:15px;margin-top:18px!important;max-width:370px}.screen-date{margin-top:14px}.screen-tabs button{min-width:125px}.hero-art{position:relative;width:450px;max-width:100%;padding:20px 0;transform:none;isolation:isolate}.hero-art>.real-device{position:relative;margin:auto;z-index:2;transform:rotate(4deg)}.hero-art>.real-product-caption{position:relative;z-index:3;transform:none;margin-top:26px;font-size:10px;text-align:center;line-height:1.6;gap:6px}.photo-stack{position:absolute;inset:0;z-index:0;pointer-events:none}.photo-frame{position:absolute;width:206px;height:160px;padding:7px 7px 19px;margin:0;background:#fbfcf6;border:1px solid #b1bca550;border-radius:8px;box-shadow:0 17px 33px #2b472320;overflow:hidden}.photo-frame img{border-radius:3px}.photo-hanok{top:12px;left:-30px;transform:rotate(-13deg)}.photo-coast{top:175px;right:-47px;transform:rotate(12deg)}.photo-coffee{bottom:40px;left:-32px;transform:rotate(-8deg)}.paper .hero .landscape{background:radial-gradient(ellipse at 78% 40%,#dce8c56b,transparent 60%),linear-gradient(130deg,#fafbf6,#f3f6eb);opacity:1}.paper .hero-art>.real-device{box-shadow:0 28px 50px #33482b26,4px 0 0 #9fac9699,5px 0 0 #d8e1cc}.photo-frame{animation:photo-arrive .8s both}.photo-coast{animation-delay:.12s}.photo-coffee{animation-delay:.24s}@keyframes photo-arrive{from{opacity:0;translate:0 12px}to{opacity:1;translate:0 0}}
@media(max-width:1100px){.hero-art{width:365px}.photo-frame{width:172px;height:137px}.photo-hanok{left:-8px}.photo-coast{right:-15px}.photo-coffee{left:-12px;bottom:44px}.screen-tabs{gap:20px}.screen-tabs button{min-width:110px}}
@media(max-width:640px){.hero-art{width:330px;max-width:100%;padding:15px 0 0;margin-top:0}.hero-art>.real-device{width:240px;transform:rotate(3deg)}.photo-frame{width:150px;height:119px;padding:5px 5px 15px;box-shadow:0 10px 24px #2b472329}.photo-hanok{top:1px;left:-7px;transform:rotate(-13deg)}.photo-coast{top:170px;right:-7px;transform:rotate(12deg)}.photo-coffee{left:-8px;bottom:57px;transform:rotate(-9deg)}.hero-art>.real-product-caption{font-size:9px;max-width:280px;margin:27px auto 0;align-items:flex-start}.hero-art>.real-product-caption .dot{margin-top:5px}.screen-tabs{gap:0}.screen-tabs button{min-width:0;width:23%;font-size:11px;gap:6px}.screen-tabs button span{font-size:8px}.screen-picker{gap:7px;margin-bottom:22px}.screen-picker button{font-size:11px;min-height:36px;padding:8px 12px}.feature-bullets{gap:9px 15px;margin:20px 0}.feature-bullets li{font-size:10px}.screen-boundary{font-size:10px!important}.feature-copy h2{font-size:30px}.screen-visual{min-height:605px}}
@media(max-width:360px){.hero-art>.real-device{width:223px}.photo-frame{width:132px;height:108px}.photo-hanok{left:-5px}.photo-coast{right:-5px}.screen-tabs button{font-size:10px}.screen-tabs button span{font-size:7px}.screen-tabs button{gap:4px}}
/* Daylight comes through Paper with the same scenic depth as Night. */
.paper .hero .landscape{opacity:1;background:linear-gradient(90deg,#f6f7f1eb 0%,#f6f7f1dc 52%,#f6f7f159 100%),linear-gradient(180deg,#f6f7f1de 0%,transparent 25%,transparent 70%,#f6f7f1 100%),url(travel-hanok.webp) center 56%/cover}.paper .closing-landscape{opacity:1;background:linear-gradient(#f6f7f1db,#f6f7f1b3 58%,#f6f7f1f5),url(travel-coast.webp) center 58%/cover}.paper .closing p,.paper .coming-label{color:#29412c}
.course-feature{padding-top:62px;padding-bottom:66px}.course-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:10%;align-items:center}.course-copy h2{font-size:40px;line-height:1.4;margin:22px 0;letter-spacing:-1.6px}.course-description{font-size:15px;line-height:1.95;color:var(--muted);max-width:470px;word-break:keep-all}.course-example{margin-top:34px;padding-top:25px;border-top:1px solid var(--line)}.course-example-label{font-size:10px;color:var(--muted)}.course-example h3{font-size:20px;letter-spacing:-.5px;font-weight:500;margin:11px 0 22px}.course-route{display:flex;list-style:none;padding:0;margin:0 0 24px;gap:0}.course-route li{display:flex;flex-direction:column;gap:8px;position:relative;flex:1;padding-right:15px}.course-route li:not(:last-child):after{content:'→';position:absolute;top:15px;right:19px;color:var(--muted);font-size:18px}.course-route span{font-size:8px;letter-spacing:1px;color:var(--muted)}.course-route b{font-size:13px;font-weight:500}.course-contents{display:flex;gap:20px;font-size:10px;color:var(--muted)}.course-contents span{border-bottom:1px solid var(--line);padding-bottom:7px}.course-caution{font-size:10px;line-height:1.9;color:var(--muted);max-width:440px;margin:23px 0 0;word-break:keep-all}.course-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:650px}.course-device{width:273px;transform:rotate(2deg);transition:transform .35s}.course-screen .screenshot-button:hover .course-device{transform:rotate(0deg) translateY(-4px)}.course-screen-caption{font-size:9px;line-height:1.7;color:var(--muted);text-align:center;margin:16px 0 0}.paper .course-feature{background:linear-gradient(145deg,#f6f7f1,#edf2e5)}
@media(max-width:900px){.course-layout{gap:6%}.course-copy h2{font-size:31px}.course-description{font-size:13px}.course-device{width:238px}.course-screen{min-height:605px}.course-route li:not(:last-child):after{right:9px}.course-route b{font-size:12px}}
@media(max-width:640px){.paper .hero .landscape{background:linear-gradient(180deg,#f6f7f1eb 0%,#f6f7f1e0 43%,#f6f7f173 68%,#f6f7f1 100%),url(travel-hanok.webp) 54% center/cover}.course-feature{padding-top:42px;padding-bottom:40px}.course-layout{display:flex;flex-direction:column;gap:32px;align-items:stretch}.course-copy h2{font-size:30px;line-height:1.45;letter-spacing:-1.4px;margin:17px 0}.course-description{font-size:13px;line-height:1.9}.course-example{margin-top:27px;padding-top:22px}.course-example h3{font-size:18px;margin:11px 0 22px}.course-route b{font-size:12px}.course-route li:not(:last-child):after{right:20px}.course-contents{gap:22px}.course-caution{font-size:10px}.course-device{width:245px}.course-screen{min-height:610px}.course-screen-caption{font-size:9px}.course-feature .section-top p{max-width:133px;font-size:10px}.course-feature .section-number{font-size:8px;letter-spacing:.7px}}
@media(max-width:360px){.course-copy h2{font-size:27px}.course-route li:not(:last-child):after{right:11px}.course-route b{font-size:11px}.course-contents{gap:20px}.course-device{width:229px}.course-screen{min-height:570px}}
.course-meta{font-size:11px;line-height:1.8;color:var(--muted);margin:-10px 0 22px}