*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#E8E4DC;color:#3A372F;font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.layer-open{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}.shell{width:min(1080px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:1000;background:#F7F3EB;color:#2C2A26;padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.stone-line{position:fixed;inset:0 0 auto 0;height:22px;z-index:80;background:#3E3B36;color:#F7F3EB;font-size:12px}.stone-line-inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:10px}.line-search{border:0;background:transparent;color:#F7F3EB;cursor:pointer;min-height:22px;padding:0 4px}.rock-bar{position:fixed;top:22px;left:0;right:0;height:56px;z-index:79;background:#E8E4DC;border-bottom:1px solid rgba(62,59,54,.16)}.rock-bar-inner{height:56px;display:flex;align-items:center;justify-content:space-between;gap:14px}.brand-link{display:flex;align-items:center;min-height:44px;max-width:55%}.brand-logo{height:26px;width:auto;object-fit:contain;object-position:center}.brand-text{font-size:16px;font-weight:700;color:#2C2A26}.bar-actions{display:flex;align-items:center;gap:8px}.drawer-open,.app-link,.drawer-close,.search-head button{min-height:44px;border-radius:9px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.drawer-open{border:1px solid rgba(166,90,58,.4);background:#F7F3EB;color:#3E3B36}.app-link{background:linear-gradient(135deg,#8A8478 0%,#6B675E 55%,#3E3B36 100%);color:#F7F3EB}.top-reserve{height:78px}.rock-tabs{height:38px;background:#F7F3EB;border-bottom:1px solid rgba(62,59,54,.16)}.rock-tabs-inner{height:38px;display:flex;align-items:center;justify-content:center;gap:8px}.rock-tabs a{height:30px;display:inline-flex;align-items:center;padding:0 18px;border-radius:8px;font-size:13px;color:#3E3B36}.rock-tabs a.is-active{background:#3E3B36;color:#F7F3EB}.site-main{padding:28px 0 72px}.eyebrow{display:inline-block;font-size:12px;letter-spacing:.12em;color:#6B675E;margin-bottom:6px}.page-head{padding:24px 0 26px;border-bottom:1px solid rgba(62,59,54,.16);margin-bottom:28px}.page-head h1,.hero-intro h1{font-size:24px;line-height:1.3;color:#2C2A26;margin:0 0 12px}.page-head p,.hero-intro p{max-width:780px;margin:0;color:#3A372F}.page-head .lead{font-size:16px}.page-head-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn-primary,.btn-secondary{min-height:42px;padding:0 16px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#8A8478 0%,#6B675E 55%,#3E3B36 100%);color:#F7F3EB}.btn-secondary{background:#F7F3EB;color:#3E3B36;border:1px solid #A65A3A}.btn-primary:hover,.app-link:hover{filter:brightness(.95)}.btn-secondary:hover,.drawer-open:hover{background:#EFEBE3}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(166,90,58,.4);outline-offset:2px}.media-slot{background:#EFEBE3;border:1px solid rgba(62,59,54,.16);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-168{height:168px}.media-190{height:190px}.media-220{height:220px}.media-app{height:min(340px,60vw)}.section-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.section-title h2{font-size:20px;color:#2C2A26;margin:0}.section-title p{margin:0;color:#6B675E;font-size:13px}.content-section{margin:34px 0}.content-section h2{font-size:20px;line-height:1.35;color:#2C2A26;margin:0 0 12px}.content-section h3{font-size:16px;line-height:1.45;color:#2C2A26;margin:0 0 8px}.content-section p{margin:0 0 12px}.muted{color:#6B675E}.note-box{background:#F6F3ED;border-left:4px solid #6A7A58;padding:16px 18px;border-radius:0 10px 10px 0}.clay-box{background:#A65A3A;color:#F7F3EB;padding:18px;border-radius:10px}.dark-box{background:#3E3B36;color:#F7F3EB;padding:18px;border-radius:10px}.warm-box{background:#F7F3EB;color:#3E3B36;border:1px solid rgba(62,59,54,.16);padding:18px;border-radius:10px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.observe-duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}.observe-card{background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:12px;padding:16px}.observe-card h2{font-size:20px;margin:14px 0 8px}.observe-card p{margin:0}.letter-list{display:grid;gap:10px}.letter-row{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:14px}.letter-mark{width:42px;height:42px;border-radius:9px;background:#3E3B36;color:#F7F3EB;display:flex;align-items:center;justify-content:center;font-weight:700}.letter-row h3{margin:0 0 6px}.letter-row p{margin:0}.notebook-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.notebook-card{background:#F7F3EB;border-top:3px solid #A65A3A;border-radius:10px;padding:18px;box-shadow:0 12px 28px rgba(44,42,38,.08)}.notebook-card h3{margin:0 0 8px}.shelf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.shelf-cell{background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:16px;min-height:140px;position:relative}.shelf-cell:after{content:"";position:absolute;left:16px;right:16px;bottom:14px;height:2px;background:#C8C2B6}.shelf-cell h3{margin:0 0 8px}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.timeline-node{background:#F7F3EB;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:16px;position:relative}.timeline-node:before{content:"";position:absolute;top:24px;left:-11px;width:12px;height:2px;background:#6B675E}.timeline-node:first-child:before{display:none}.status{display:inline-flex;padding:3px 8px;border-radius:999px;background:#EFEBE3;color:#3E3B36;font-size:12px;margin-bottom:8px}.status.ready{background:#e0e6d9;color:#3f4b35}.status.build{background:#eee6d7;color:#6c5537}.status.wait{background:#e6e1dd;color:#5f574f}.app-feature{display:grid;gap:18px}.app-copy{background:#3E3B36;color:#F7F3EB;padding:22px;border-radius:12px}.app-visuals{display:grid;grid-template-columns:1fr 84px;gap:14px;align-items:center}.icon-slot{height:84px}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini details{background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:14px}.faq-mini summary{cursor:pointer;font-weight:700;color:#2C2A26}.faq-mini p{margin:8px 0 0}.brand-story{background:#D6D0C6;border-radius:12px;padding:22px}.brand-story h2{margin-top:0}.number-strip{display:grid;gap:10px}.number-strip article{display:grid;grid-template-columns:58px 1fr;gap:14px;background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:16px}.number-strip .num{font-weight:700;color:#A65A3A}.observe-directory{display:grid;grid-template-columns:210px 1fr;gap:22px}.observe-directory nav{align-self:start;position:sticky;top:94px;background:#F7F3EB;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:12px}.observe-directory nav a{display:block;padding:9px 10px;border-radius:8px}.observe-directory nav a:hover{background:#EFEBE3}.observe-directory article section{background:#F6F3ED;border-radius:10px;padding:18px;margin-bottom:14px}.card-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.card-wall article{background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:12px;padding:18px}.card-wall .wide{grid-column:1/-1}.alpha-rank{display:grid;gap:12px}.alpha-rank article{display:grid;grid-template-columns:72px 1fr;gap:16px;border-bottom:1px solid rgba(62,59,54,.16);padding:14px 0}.alpha-rank .alpha{font-size:28px;font-weight:700;color:#6B675E}.memo-list{display:grid;gap:12px}.memo-list article{background:#F7F3EB;border-left:5px solid #6A7A58;border-radius:0 10px 10px 0;padding:16px}.method-steps{counter-reset:method}.method-steps article{position:relative;padding:16px 16px 16px 64px;background:#F6F3ED;border-radius:10px;margin-bottom:12px}.method-steps article:before{counter-increment:method;content:counter(method,"cjk-ideographic");position:absolute;left:18px;top:16px;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#3E3B36;color:#F7F3EB}.theme-list{display:grid;gap:12px}.theme-list article{display:grid;grid-template-columns:180px 1fr;gap:18px;background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:16px}.theme-list .tag{color:#A65A3A;font-weight:700}.shelf-page{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.shelf-page article{min-height:220px;background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:18px;box-shadow:inset 0 -12px 0 #E8E4DC}.product-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:start}.feature-list{display:grid;gap:10px}.feature-list article{background:#F7F3EB;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:15px}.install-track{display:grid;gap:14px}.install-track article{display:grid;grid-template-columns:60px 1fr;gap:14px;align-items:start}.install-track .step{width:48px;height:48px;border-radius:10px;background:#6B675E;color:#F7F3EB;display:flex;align-items:center;justify-content:center}.policy-sections section{padding:18px 0;border-bottom:1px solid rgba(62,59,54,.16)}.policy-sections section:last-child{border-bottom:0}.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.help-grid article{background:#F6F3ED;border-radius:10px;padding:18px}.faq-page{display:grid;gap:12px}.faq-item{background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:18px}.faq-item h2{font-size:16px;margin:0 0 8px}.faq-item p{margin:0}.contact-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-cards article{background:#F7F3EB;border:1px solid rgba(62,59,54,.16);border-radius:10px;padding:18px}.about-manifesto{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px}.about-copy section{margin-bottom:16px;background:#F6F3ED;padding:18px;border-radius:10px}.site-footer{background:#2A2824;color:#E8E4DC;border-top:1px solid #C8C2B6;padding:28px 0 calc(24px + env(safe-area-inset-bottom));font-size:13px}.footer-brand-row{padding-bottom:18px;border-bottom:1px solid rgba(232,228,220,.16)}.footer-brand{display:flex;align-items:center;gap:12px}.footer-logo{height:26px;width:auto;object-fit:contain}.footer-brand strong{display:block}.footer-brand span{display:block;color:#C8C2B6;font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:22px 0}.footer-grid h2{font-size:13px;margin:0 0 8px;color:#F7F3EB}.footer-grid a{display:block;color:#E8E4DC;padding:3px 0}.footer-grid a:hover{text-decoration:underline}.footer-note{border-top:1px solid rgba(232,228,220,.16);padding-top:16px}.footer-note p{margin:0 0 6px;color:#C8C2B6}.site-overlay{position:fixed;inset:0;z-index:88;background:rgba(42,40,36,.48);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.site-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.rock-drawer{position:fixed;top:0;bottom:0;left:0;z-index:90;width:min(380px,88vw);background:#F6F3ED;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s}.rock-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:66px;display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid rgba(62,59,54,.16);background:#E8E4DC}.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:700}.drawer-brand img{height:26px;width:auto;object-fit:contain}.drawer-close{border:1px solid rgba(62,59,54,.16);background:#F7F3EB;color:#3E3B36}.drawer-scroll{height:calc(100vh - 66px);overflow:auto;padding:12px 14px 28px}.drawer-scroll section{margin-bottom:18px}.drawer-scroll h2{font-size:12px;color:#8A8478;margin:0 0 6px;text-transform:uppercase}.drawer-scroll a{display:block;padding:10px;border-radius:9px}.drawer-scroll a:hover{background:#EFEBE3}.drawer-scroll strong{display:block;color:#2C2A26}.drawer-scroll span{display:block;color:#6B675E;font-size:12px;line-height:1.5;margin-top:2px}.site-search{position:fixed;top:78px;left:50%;z-index:91;width:min(720px,calc(100% - 32px));transform:translate(-50%,-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.site-search.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:#F6F3ED;border:1px solid rgba(62,59,54,.16);border-radius:0 0 12px 12px;padding:18px;box-shadow:0 12px 28px rgba(44,42,38,.08)}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.search-head button{border:1px solid rgba(62,59,54,.16);background:#F7F3EB;color:#3E3B36}.search-card label{display:block;font-size:13px;color:#6B675E;margin-bottom:6px}.search-card input{width:100%;height:44px;border:1px solid rgba(62,59,54,.22);border-radius:9px;background:#fff;color:#2C2A26;padding:0 12px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{padding:8px 12px;border-radius:8px;background:#EFEBE3;color:#3E3B36}.search-empty{color:#6B675E;font-size:13px;margin:12px 0 0}.mobile-bottom{display:none}.prose p{margin:0 0 12px}.prose ul{margin:0;padding-left:20px}.prose li{margin:6px 0}.banner-slot{margin-top:18px}.page-end-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px;padding-top:20px;border-top:1px solid rgba(62,59,54,.16)}
.spaced-top{margin-top:14px}.eyebrow-light{color:#E8E4DC}.on-dark{color:#F7F3EB!important}.app-visuals-single{grid-template-columns:1fr}
@media (max-width:820px){.shelf-grid{grid-template-columns:repeat(2,1fr)}.shelf-page{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:1fr}.timeline-node:before{display:none}.observe-directory{grid-template-columns:1fr}.observe-directory nav{position:static;display:flex;flex-wrap:wrap;gap:6px}.observe-directory nav a{display:inline-flex}.product-grid,.about-manifesto{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}.shell{width:min(100% - 32px,1080px)}.stone-line-inner{font-size:11px}.rock-tabs{display:none}.site-main{padding-top:22px}.observe-duo,.two-col,.notebook-grid,.faq-mini,.card-wall,.help-grid,.contact-cards{grid-template-columns:1fr}.card-wall .wide{grid-column:auto}.shelf-grid,.shelf-page{grid-template-columns:1fr}.theme-list article{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-note{padding-bottom:10px}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:70;display:grid;grid-template-columns:repeat(5,1fr);height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#F7F3EB;border-top:1px solid rgba(62,59,54,.16)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;color:#3E3B36}.mobile-bottom a.is-active{background:#A65A3A;color:#F7F3EB}.site-search{top:0;left:0;width:100%;height:100dvh;transform:none;background:#3E3B36;color:#F7F3EB}.site-search.is-open{transform:none}.search-card{height:100%;border:0;border-radius:0;background:#3E3B36;color:#F7F3EB;padding:24px 16px}.search-head button{background:#F7F3EB}.search-card label{color:#E8E4DC}.search-presets a{background:#F7F3EB}.search-empty{color:#E8E4DC}.app-visuals{grid-template-columns:1fr}.icon-slot{height:72px;width:72px}.media-app{height:320px}.page-head{padding-top:12px}.page-head h1,.hero-intro h1{font-size:24px}.bar-actions{gap:6px}.drawer-open,.app-link{padding:0 10px}.brand-link{max-width:48%}.footer-grid section{min-width:0}}