:root{
    --bg:#E8E4DC;--bg-deep:#D6D0C6;--paper:#F6F3ED;--soft:#EFEBE3;
    --title:#2C2A26;--text:#3A372F;--muted:#6B675E;--aux:#8A8478;
    --rock:#6B675E;--rock-deep:#3E3B36;--rock-light:#C8C2B6;--warm:#F7F3EB;
    --moss:#6A7A58;--clay:#A65A3A;--border:rgba(62,59,54,.16);
    --border-strong:rgba(166,90,58,.40);--shadow:0 12px 28px rgba(44,42,38,.08);
    --max:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.is-locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
.shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}
.site-header{position:fixed;left:0;top:0;right:0;z-index:80}
.stone-line{height:22px;background:var(--rock-deep);color:var(--warm);font-size:12px}
.stone-line-inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.text-button{border:0;background:transparent;color:inherit;padding:0 4px;min-height:22px}
.rock-bar{height:56px;background:var(--bg-deep);border-bottom:1px solid var(--border)}
.rock-bar-inner{height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-mark{display:flex;align-items:center;min-height:44px;font-size:16px;font-weight:700;color:var(--title)}
.brand-mark img,.drawer-brand img,.footer-brand img{height:26px;width:auto;object-fit:contain}
.rock-actions{display:flex;gap:8px;align-items:center}
.rock-drawer-button,.app-button,.primary-button,.secondary-button{
    min-height:44px;padding:0 16px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
    font-size:14px;white-space:nowrap;transition:transform .18s ease,box-shadow .18s ease,background .18s ease
}
.rock-drawer-button{border:1px solid var(--border-strong);background:var(--warm);color:var(--rock-deep)}
.app-button,.primary-button{border:1px solid transparent;background:linear-gradient(135deg,#8A8478 0%,#6B675E 55%,#3E3B36 100%);color:var(--warm)}
.secondary-button{border:1px solid var(--clay);background:var(--warm);color:var(--rock-deep)}
.rock-drawer-button:hover,.app-button:hover,.primary-button:hover,.secondary-button:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(44,42,38,.10)}
a:focus-visible,button:focus-visible{outline:3px solid rgba(166,90,58,.35);outline-offset:2px}
.rock-tabs{height:38px;background:var(--warm);border-bottom:1px solid var(--border)}
.rock-tabs-inner{height:38px;display:flex;justify-content:center;align-items:center;gap:8px}
.rock-tabs a{height:30px;min-width:72px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:7px;font-size:13px}
.rock-tabs a.is-active{background:var(--rock-deep);color:var(--warm)}
.site-main{padding-top:116px}
.page-hero{padding:42px 0 28px}
.page-hero .eyebrow,.section-kicker{font-size:12px;letter-spacing:.12em;color:var(--clay);font-weight:700}
.page-hero h1,.home-intro h1{font-size:24px;line-height:1.3;margin:8px 0 14px;color:var(--title)}
.page-hero p,.home-intro p{max-width:760px;margin:0;color:var(--text)}
.page-hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.hero-banner{margin-top:24px;height:220px}
.media-slot{margin:0;border:1px solid var(--border);background:linear-gradient(145deg,var(--soft),var(--warm));border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.section{padding:30px 0}
.section + .section{border-top:1px solid var(--border)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}
.section-head h2,.content-block h2{margin:3px 0 0;font-size:20px;line-height:1.35;color:var(--title)}
.section-head p{margin:0;max-width:560px;color:var(--muted)}
.content-block{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:22px;box-shadow:var(--shadow)}
.content-block h3{font-size:16px;color:var(--title);margin:0 0 8px}
.content-block p{margin:0}
.content-block p+p{margin-top:10px}
.home-intro{padding:46px 0 32px}
.home-intro-card{background:var(--paper);border:1px solid var(--border);border-left:4px solid var(--clay);border-radius:12px;padding:28px;box-shadow:var(--shadow)}
.home-intro .small-brand{width:74px;min-height:42px;margin-bottom:12px}
.home-intro .small-brand img{height:42px;object-fit:contain}
.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.feature-panel{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px}
.feature-panel .media-slot{height:168px;margin-bottom:16px}
.feature-panel h2{font-size:20px;margin:0 0 8px}
.feature-panel p{margin:0}
.number-strips{display:grid;gap:10px}
.number-strip{display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:14px 16px}
.number-strip .mark{width:42px;height:42px;border-radius:8px;background:var(--rock-deep);color:var(--warm);display:grid;place-items:center;font-weight:700}
.number-strip h3{margin:0 0 5px;font-size:16px}
.number-strip p{margin:0}
.shikan-home-media{height:190px;margin:16px 0}
.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.note-column{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}
.note-column .media-slot{height:184px;margin-bottom:15px}
.note-column h3{margin:0 0 10px;font-size:16px}
.shelf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.shelf-cell{background:var(--warm);border:1px solid var(--border);border-top:4px solid var(--moss);border-radius:10px;padding:18px;min-height:150px}
.shelf-cell h3{margin:0 0 8px;font-size:16px}
.shelf-cell p{margin:0;color:var(--muted)}
.sequence-list{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.sequence-item{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:16px}
.sequence-item .mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--clay);color:var(--warm);font-weight:700;margin-bottom:10px}
.sequence-item h3{font-size:16px;margin:0 0 7px}
.sequence-item p{margin:0;font-size:14px}
.timeline-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:4px 0 8px}
.timeline-node{min-width:0;background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:16px;position:relative}
.timeline-node::before{content:"";position:absolute;left:16px;top:-5px;width:10px;height:10px;border-radius:50%;background:var(--moss)}
.timeline-node .status{font-size:12px;color:var(--clay);font-weight:700}
.timeline-node h3{font-size:16px;margin:6px 0}
.timeline-node p{margin:0;color:var(--muted)}
.app-home{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.app-home-copy{background:var(--rock-deep);color:var(--warm);border-radius:12px;padding:26px}
.app-home-copy h2{font-size:20px;color:var(--warm);margin:0 0 12px}
.app-home-copy p{margin:0 0 16px}
.app-icon-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.app-icon-row .media-slot{width:48px;height:48px;flex:none}
.app-home .app-vertical{height:320px}
.reading-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.reading-points .content-block{box-shadow:none}
.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-mini details{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:14px 16px}
.faq-mini summary{font-weight:700;color:var(--title);cursor:pointer}
.faq-mini p{margin:10px 0 0}
.brand-story{background:var(--bg-deep);border-radius:14px;padding:26px;display:grid;grid-template-columns:1fr 260px;gap:24px;align-items:center}
.brand-story .media-slot{height:180px}
.brand-story h2{margin:0 0 10px;font-size:20px}
.brand-story p{margin:0}
.page-layout{padding-bottom:46px}
.long-strips{display:grid;gap:12px}
.long-strip{background:var(--paper);border:1px solid var(--border);border-radius:11px;padding:18px;display:grid;grid-template-columns:48px minmax(0,1fr);gap:16px}
.long-strip .mark{width:44px;height:44px;border-radius:9px;background:var(--rock-deep);color:var(--warm);display:grid;place-items:center;font-weight:700}
.long-strip h2{font-size:20px;margin:0 0 7px}
.long-strip h3{font-size:16px;margin:0 0 6px}
.long-strip p{margin:0}
.observation-directory{display:grid;grid-template-columns:220px 1fr;gap:22px}
.observation-index{position:sticky;top:132px;align-self:start;background:var(--rock-deep);color:var(--warm);border-radius:12px;padding:16px}
.observation-index a,.observation-index span{display:block;padding:9px 10px;border-radius:7px}
.observation-index a:hover{background:rgba(247,243,235,.10)}
.observation-chapters{display:grid;gap:14px}
.observation-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:22px}
.observation-card h2{font-size:20px;margin:0 0 8px}
.observation-card p{margin:0}
.card-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.wall-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px;min-height:210px}
.wall-card:nth-child(2n){background:var(--soft)}
.wall-card h2{font-size:20px;margin:0 0 8px}
.wall-card p{margin:0}
.dual-notes{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.note-stack{display:grid;gap:14px}
.note-paper{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}
.note-paper h2{font-size:20px;margin:0 0 8px}
.note-paper p{margin:0}
.ordered-five{display:grid;gap:12px;counter-reset:sequence}
.ordered-five article{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px;display:grid;grid-template-columns:54px 1fr;gap:16px}
.ordered-five .mark{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--clay);color:var(--warm);font-weight:700}
.ordered-five h2{font-size:20px;margin:0 0 7px}
.ordered-five p{margin:0}
.status-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.status-card{position:relative;background:var(--paper);border-top:3px solid var(--moss);border-bottom:1px solid var(--border);padding:22px 18px;min-height:220px}
.status-card:first-child{border-left:1px solid var(--border);border-radius:12px 0 0 12px}
.status-card:last-child{border-right:1px solid var(--border);border-radius:0 12px 12px 0}
.status-card:not(:last-child){border-right:1px dashed var(--border)}
.status-card .status{display:inline-block;font-size:12px;color:var(--clay);font-weight:700;margin-bottom:8px}
.status-card h2{font-size:18px;margin:0 0 8px}
.status-card p{margin:0}
.memo-list{display:grid;gap:14px}
.memo-row{background:var(--warm);border:1px solid var(--border);border-left:5px solid var(--moss);border-radius:10px;padding:18px}
.memo-row h2{font-size:19px;margin:0 0 8px}
.memo-row ul{margin:0;padding-left:20px}
.memo-row li+li{margin-top:7px}
.method-steps{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.method-step{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}
.method-step h2{font-size:20px;margin:0 0 8px}
.method-step p{margin:0}
.theme-list{display:grid;gap:12px}
.theme-row{display:grid;grid-template-columns:170px 1fr;gap:20px;background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px}
.theme-row h2{font-size:18px;margin:0}
.theme-row p{margin:0}
.big-shelf{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.big-shelf section{background:var(--paper);border:1px solid var(--border);border-top:6px solid var(--rock);border-radius:12px;padding:22px}
.big-shelf h2{font-size:20px;margin:0 0 10px}
.big-shelf ul{margin:0;padding-left:20px}
.big-shelf li+li{margin-top:7px}
.product-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
.product-copy{display:grid;gap:14px}
.product-copy .content-block{box-shadow:none}
.product-visual .media-slot{height:340px;position:sticky;top:132px}
.legal-sections,.help-sections,.about-sections{display:grid;gap:14px}
.legal-sections section,.help-sections section,.about-sections section{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:22px}
.legal-sections h2,.help-sections h2,.about-sections h2{font-size:20px;margin:0 0 8px}
.legal-sections p,.help-sections p,.about-sections p{margin:0}
.faq-list{display:grid;gap:12px}
.faq-list details{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px 20px}
.faq-list summary{font-size:16px;font-weight:700;color:var(--title);cursor:pointer}
.faq-list p{margin:10px 0 0}
.contact-channels{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.contact-channel{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:22px}
.contact-channel h2{font-size:20px;margin:0 0 8px}
.contact-channel p{margin:0}
.site-footer{background:#2A2824;color:#E8E4DC;border-top:1px solid var(--rock-light);padding:32px 0 calc(26px + env(safe-area-inset-bottom))}
.footer-top{display:grid;grid-template-columns:240px 1fr;gap:30px}
.footer-brand-line{display:flex;align-items:center;gap:10px}
.footer-brand strong{font-size:16px}
.footer-brand>span{display:block;margin-top:8px;font-size:12px;color:var(--rock-light)}
.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.footer-links section{display:flex;flex-direction:column;align-items:flex-start}
.footer-links h2{font-size:13px;margin:0 0 9px;color:var(--warm)}
.footer-links a{font-size:13px;color:#E8E4DC;padding:3px 0}
.footer-links a:hover{text-decoration:underline}
.footer-notice{border-top:1px solid rgba(232,228,220,.18);margin-top:24px;padding-top:18px;font-size:13px;color:#D6D0C6}
.footer-notice p{margin:0}
.footer-notice p+p{margin-top:6px}
.rock-drawer{
    position:fixed;z-index:120;left:0;top:0;bottom:0;width:380px;max-width:88vw;background:var(--warm);color:var(--text);
    transform:translateX(-104%);transition:transform .24s ease;visibility:hidden;pointer-events:none;box-shadow:24px 0 60px rgba(0,0,0,.16)
}
.rock-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border)}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:700}
.icon-close{min-height:44px;padding:0 12px;border:1px solid var(--border);background:var(--paper);color:var(--rock-deep);border-radius:8px}
.drawer-scroll{height:calc(100% - 72px);overflow-y:auto;padding:14px 18px 24px}
.drawer-group{padding:8px 0 14px;border-bottom:1px solid var(--border)}
.drawer-group h2{font-size:13px;color:var(--clay);margin:0 0 4px}
.drawer-group a{display:block;padding:10px;border-radius:8px}
.drawer-group a:hover{background:var(--soft)}
.drawer-group strong{display:block;font-size:15px}
.drawer-group span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.search-layer{position:fixed;z-index:115;left:0;right:0;top:116px;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s ease}
.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}
.search-card{width:min(calc(100% - 32px),760px);margin:16px auto 0;background:var(--bg-deep);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:12px;padding:18px}
.search-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.search-head strong{font-size:18px;color:var(--title)}
.search-head p{margin:3px 0 0;color:var(--muted);font-size:13px}
.search-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.search-presets a{min-height:44px;display:flex;align-items:center;justify-content:center;background:var(--warm);border:1px solid var(--border-strong);border-radius:8px}
.screen-overlay{position:fixed;z-index:110;inset:0;background:rgba(42,40,36,.42);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease}
.screen-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.mobile-bottom{display:none}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tag{display:inline-flex;min-height:34px;align-items:center;padding:0 10px;border:1px solid var(--border);border-radius:999px;background:var(--warm);font-size:13px;color:var(--muted)}
.inline-media{height:240px;margin:18px 0}
.callout{background:var(--rock-deep);color:var(--warm);border-radius:12px;padding:20px}
.callout h2{color:var(--warm);font-size:20px;margin:0 0 8px}
.callout p{margin:0}
.plain-list{margin:0;padding-left:20px}
.plain-list li+li{margin-top:8px}
@media(max-width:900px){
    .timeline-row{grid-template-columns:1fr 1fr}
    .sequence-list{grid-template-columns:repeat(3,1fr)}
    .shelf-grid{grid-template-columns:repeat(2,1fr)}
    .status-track{grid-template-columns:1fr 1fr;gap:12px}
    .status-card,.status-card:first-child,.status-card:last-child{border:1px solid var(--border);border-top:3px solid var(--moss);border-radius:12px}
    .card-wall{grid-template-columns:1fr 1fr}
    .footer-top{grid-template-columns:1fr}
}
@media(max-width:700px){
    .timeline-row{grid-template-columns:1fr}
    .rock-tabs{display:none}
    .site-main{padding-top:78px;padding-bottom:64px}
    .shell{width:min(calc(100% - 32px),var(--max))}
    .rock-actions{gap:6px}
    .rock-drawer-button,.app-button{padding:0 12px}
    .home-intro{padding-top:32px}
    .home-intro-card{padding:22px}
    .split-feature,.note-columns,.app-home,.reading-points,.faq-mini,.brand-story,.dual-notes,.method-steps,.big-shelf,.product-grid,.contact-channels{grid-template-columns:1fr}
    .sequence-list{grid-template-columns:1fr}
    .shelf-grid{grid-template-columns:1fr 1fr}
    .observation-directory{grid-template-columns:1fr}
    .observation-index{position:static;display:flex;overflow-x:auto;gap:4px}
    .observation-index a,.observation-index span{white-space:nowrap}
    .card-wall{grid-template-columns:1fr}
    .theme-row{grid-template-columns:1fr;gap:8px}
    .status-track{grid-template-columns:1fr}
    .product-visual .media-slot{position:static}
    .footer-links{grid-template-columns:1fr 1fr}
    .search-layer{top:0;bottom:0;background:var(--rock-deep);padding:16px;overflow-y:auto}
    .search-card{width:100%;margin:0;background:transparent;color:var(--warm);border:0;box-shadow:none;padding:20px 0}
    .search-head strong{color:var(--warm)}
    .search-head p{color:var(--rock-light)}
    .search-head .icon-close{background:var(--warm)}
    .search-presets{grid-template-columns:1fr 1fr}
    .search-presets a{color:var(--rock-deep)}
    .mobile-bottom{
        display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:70;left:0;right:0;bottom:0;
        height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);
        background:var(--warm);border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(44,42,38,.08)
    }
    .mobile-bottom a{min-width:0;display:flex;align-items:center;justify-content:center;font-size:12px;min-height:48px}
    .mobile-bottom a.is-active{background:var(--clay);color:var(--warm)}
    .footer-top{gap:22px}
    .footer-notice{padding-bottom:48px}
    .hero-banner{height:180px}
}
@media(max-width:430px){
    .stone-line-inner span{max-width:250px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .brand-mark{font-size:15px}
    .rock-drawer-button,.app-button{padding:0 10px}
    .shelf-grid,.search-presets,.footer-links{grid-template-columns:1fr}
    .number-strip,.long-strip,.ordered-five article{grid-template-columns:44px 1fr;gap:10px}
    .page-hero{padding-top:30px}
}

.mt-18{margin-top:18px}