:root{color-scheme:light;--ink:#3f3528;--muted:#736653;--gold:#9a622b;--forest:#254d3b;--line:#d6c09a;--paper:#fff6df}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Apple SD Gothic Neo","Malgun Gothic",Arial,sans-serif;background:linear-gradient(#f1e6ceee,#f5eddbe8),url("https://www.stoneageplus.com/theme/stoneageplus/img/webplus/bg.png") center top/cover fixed;line-height:1.65}a{color:inherit}button{font:inherit}.skip{position:absolute;top:-80px;left:12px;z-index:10;background:white;padding:12px}.skip:focus{top:12px}:focus-visible{outline:3px solid #285c49;outline-offset:5px}.topbar{max-width:1120px;padding:27px 24px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ae977545}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;font-size:22px;letter-spacing:-1px}.brand-mark{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;color:#fff5cb;background:var(--gold);font-size:30px;line-height:1;box-shadow:inset 0 0 0 2px #d9ac6a}.back-link{font-size:14px;text-decoration:none;font-weight:700}.back-link span{margin-left:10px}main{max-width:1120px;margin:auto;padding:34px 24px 0}.intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:2px;color:#7c6546}.intro p{font-size:13px;margin:0;color:var(--muted)}.download-panel{display:grid;grid-template-columns:minmax(0,1fr) 320px;background:var(--paper);border:1px solid #bca079;border-radius:22px;overflow:hidden;box-shadow:0 20px 46px #4c3a1c17}.download-main{padding:42px 44px 30px}.app-heading{display:flex;gap:24px;align-items:center}.app-heading img{border-radius:20px;box-shadow:0 4px 0 #c9b28b;object-fit:cover;flex:none}.platform{font-size:13px;font-weight:700;color:#876631}h1{font-size:35px;line-height:1.3;letter-spacing:-1.7px;margin:6px 0 0;font-weight:900}.lead{font-size:16px;color:var(--muted);margin:24px 0}.app-specs{display:flex;list-style:none;padding:0;margin:24px 0 26px;gap:28px}.app-specs li+li{border-left:1px solid var(--line);padding-left:28px}.app-specs span,.app-specs strong{display:block}.app-specs span{font-size:11px;color:var(--muted);margin-bottom:3px}.app-specs strong{font-size:14px;white-space:nowrap}.release-note{display:flex;gap:10px;padding:16px 18px;background:#eee2c7;border:1px solid #dbc69b;border-radius:10px;margin-bottom:18px}.status-dot{width:7px;height:7px;background:#ad7535;border-radius:50%;margin-top:9px;flex:none}.release-note strong{font-size:14px}.release-note p{font-size:12px;line-height:1.7;margin:3px 0 0;color:#776347}.download-actions{display:flex;gap:12px}.install-button{display:block;min-height:55px;width:100%;border:1px solid #183a2b;border-radius:10px;background:var(--forest);color:#fff8e3;text-align:center;padding:13px 20px;font-size:17px;font-weight:800;text-decoration:none;box-shadow:0 3px 0 #173226}.install-button:hover{background:#183c2b}.install-button:disabled{background:#d9cbb0;border-color:#c9b997;color:#645945;box-shadow:none;cursor:not-allowed}.device-help{font-size:12px;line-height:1.6;color:var(--muted);margin:12px 0 0}.action-status{font-size:12px;color:var(--forest);margin:8px 0 0;min-height:1px}.phone-panel{padding:40px 30px 26px;background:#294a3b;color:#fcf0d1;display:flex;flex-direction:column;align-items:center;text-align:center;position:relative}.phone-panel:before{content:"";width:130px;height:130px;border:1px solid #9eb58625;border-radius:50%;position:absolute;right:-70px;top:-70px}.qr-heading{display:flex;gap:10px;align-items:center}.qr-heading>span{font-size:24px;color:#c7d5aa}.qr-heading h2{font-size:18px;margin:0;font-weight:800;letter-spacing:-.4px}.phone-panel p{font-size:12px;color:#c6d1bc;margin:12px 0 24px}.qr-frame{border:8px solid #fffdf8;background:#fff;border-radius:12px;padding:4px;box-shadow:0 8px 20px #11281f40}.qr-frame img{display:block;width:180px;height:180px}.short-url{font-size:12px;color:#d6dec9;margin:18px 0 12px;overflow-wrap:anywhere}.copy-link{border:1px solid #a9bb9966;border-radius:8px;background:transparent;color:#fff2cd;padding:9px 16px;font-size:12px;cursor:pointer}.copy-link:hover{background:#ffffff12}.copy-link span{margin-left:12px}.copy-status{font-size:11px;color:#d9e6c6;min-height:22px;margin-top:5px}.guide{padding:40px 0 25px}.section-heading{display:flex;align-items:center;gap:18px;margin-bottom:18px}.section-heading h2,.faq h2{font-size:20px;margin:0;letter-spacing:-.7px}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));list-style:none;padding:0;margin:0;border:1px solid var(--line);background:#fff8e6c9;border-radius:14px}.steps li{padding:24px}.steps li+li{border-left:1px solid var(--line)}.step-number{font-size:12px;color:#9c783e;font-weight:800;letter-spacing:1px}.steps h3{font-size:15px;margin:8px 0}.steps p{font-size:13px;margin:0;color:var(--muted);word-break:keep-all}.faq{padding:12px 0 26px}.faq h2{margin-bottom:14px}.faq details{border-bottom:1px solid #cbb795}.faq summary{position:relative;padding:17px 30px 17px 0;cursor:pointer;list-style:none;font-size:14px;font-weight:700}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";position:absolute;right:3px;font-size:19px;color:#8c7655;top:12px}.faq details[open] summary:after{content:"−"}.faq details p{font-size:13px;line-height:1.9;margin:0 28px 18px 0;color:var(--muted);max-width:800px;word-break:keep-all}.support{display:flex;justify-content:space-between;align-items:center;border-radius:12px;background:#e7dbc0;padding:23px 28px;margin-top:8px}.support strong{font-size:15px}.support p{font-size:12px;margin:3px 0 0;color:var(--muted)}.support a{font-size:13px;font-weight:800;text-decoration:none;white-space:nowrap}.support a span{margin-left:10px}footer{max-width:1120px;margin:32px auto 0;padding:22px 24px 30px;border-top:1px solid #bda88766;display:flex;align-items:center;gap:20px;color:#7f7059}footer>a{font-size:12px;font-weight:900;letter-spacing:1px;text-decoration:none}footer span{font-size:11px}footer small{font-size:10px;margin-left:auto;letter-spacing:.5px}
@media(max-width:780px){.download-panel{grid-template-columns:minmax(0,1fr) 280px}.download-main{padding:30px 26px}.app-heading{gap:16px}.app-heading img{width:72px;height:72px;border-radius:16px}h1{font-size:28px}.app-specs{gap:16px}.app-specs li+li{padding-left:16px}.phone-panel{padding:34px 20px}.steps li{padding:20px}.section-heading .eyebrow{display:none}}
@media(max-width:640px){.topbar{padding:18px 20px}.brand{font-size:19px}.brand-mark{width:27px;height:27px;font-size:24px}.back-link{font-size:11px}main{padding:24px 16px 0}.intro{margin:0 4px 14px}.intro p{font-size:11px}.eyebrow{font-size:10px;letter-spacing:1.5px}.download-panel{grid-template-columns:1fr;border-radius:18px}.download-main{padding:28px 22px 24px}.app-heading img{width:76px;height:76px}.app-heading{gap:18px}h1{font-size:29px;letter-spacing:-1.5px}.platform{font-size:11px}.lead{font-size:14px;margin:22px 0}.app-specs{justify-content:space-between;gap:0;margin:22px 0}.app-specs li+li{padding-left:17px}.app-specs strong{font-size:12px}.app-specs span{font-size:10px}.release-note{padding:14px}.release-note strong{font-size:13px}.phone-panel{padding:25px 20px 18px}.qr-heading h2{font-size:16px}.phone-panel p{margin:9px 0 16px}.qr-frame img{width:152px;height:152px}.phone-panel.is-ios .qr-frame,.phone-panel.is-ios .short-url{display:none}.phone-panel.is-ios p{margin-bottom:15px}.guide{padding:28px 0 20px}.section-heading h2,.faq h2{font-size:18px}.steps{grid-template-columns:1fr}.steps li{padding:18px 20px 18px 56px;position:relative}.steps li+li{border-left:0;border-top:1px solid var(--line)}.step-number{position:absolute;top:24px;left:20px}.steps h3{margin:0 0 5px;font-size:14px}.steps p{font-size:12px}.faq summary{font-size:13px;padding-top:16px;padding-bottom:16px}.support{padding:20px;display:block}.support a{display:inline-block;margin-top:12px}.support p{font-size:11px}footer{padding:20px 16px;gap:9px;flex-wrap:wrap}footer span{font-size:10px}footer small{width:100%;margin-left:0;font-size:9px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.install-button[aria-disabled="true"]{background:#d9cbb0;border-color:#c9b997;color:#645945;box-shadow:none;cursor:default}