:root{
    --bean-light:#F3E6C8;
    --bean-deep:#5A3C16;
    --bean-shell:#8A5A22;
    --sprout:#6A7A38;
    --warm:#FFF8E8;
    --deep-bg:#E4D2A8;
    --soft-bg:#F7EDD4;
    --title:#3A2A12;
    --text:#4A3418;
    --muted:#7A5A28;
    --faint:#A08048;
    --border:rgba(90,60,22,.16);
    --border-strong:rgba(90,60,22,.42);
    --shadow:0 12px 28px rgba(58,42,18,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bean-light)}
body{margin:0;background:var(--bean-light);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
button{cursor:pointer}
.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:var(--warm);color:var(--bean-deep);padding:10px 14px;border-radius:8px;border:1px solid var(--border-strong)}
.skip-link:focus{top:8px}
.sprout-line{position:fixed;z-index:100;top:0;left:0;right:0;height:22px;background:var(--bean-deep);color:var(--warm);font-size:12px}
.top-inner,.pod-inner,.furrow-inner,.footer-inner,.site-main{width:min(1080px,calc(100% - 32px));margin:0 auto}
.top-inner{height:22px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.text-control{border:0;background:transparent;color:var(--warm);padding:0 4px;height:22px}
.pod-header{position:fixed;z-index:99;top:22px;left:0;right:0;height:56px;background:var(--bean-light);border-bottom:1px solid var(--border-strong)}
.pod-inner{height:56px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}
.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px;max-width:220px}
.brand-logo,.footer-logo,.drawer-logo{height:26px;width:auto;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:800;color:var(--title);letter-spacing:.02em}
.app-entry{justify-self:center;min-height:44px;display:inline-flex;align-items:center;font-size:14px;color:var(--bean-deep);font-weight:700;padding:0 12px;border-radius:8px}
.drawer-toggle{justify-self:end;height:44px;min-width:58px;border:1px solid var(--bean-shell);border-radius:9px;background:var(--warm);color:var(--bean-deep);font-size:14px;font-weight:700}
.furrow-nav{position:fixed;z-index:98;top:78px;left:0;right:0;height:38px;background:var(--warm);border-bottom:1px solid var(--border)}
.furrow-inner{height:38px;display:flex;align-items:center;justify-content:space-between}
.furrow-left,.furrow-right{display:flex;gap:6px}
.furrow-nav a{height:30px;display:flex;align-items:center;padding:0 12px;border-radius:7px;font-size:13px;color:var(--bean-deep)}
.furrow-nav a.is-current{background:var(--bean-deep);color:var(--warm)}
.site-main{padding-top:148px;padding-bottom:64px;min-height:70vh}
h1,h2,h3{color:var(--title);margin-top:0;line-height:1.3}
h1{font-size:24px;margin-bottom:14px}
h2{font-size:20px;margin-bottom:12px}
h3{font-size:16px;margin-bottom:8px}
p{margin:0 0 14px}
.eyebrow{font-size:12px;font-weight:800;color:var(--bean-shell);letter-spacing:.12em;text-transform:uppercase;margin-bottom:8px}
.lead{font-size:16px;line-height:1.8;color:var(--text);max-width:780px}
.page-head{padding:28px 0 24px;border-bottom:1px solid var(--border);margin-bottom:26px}
.page-head .intro{max-width:820px;color:var(--muted)}
.primary-btn,.secondary-btn{min-height:42px;padding:0 18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;white-space:nowrap}
.primary-btn{background:linear-gradient(135deg,#8A5A22 0%,#5A3C16 100%);color:var(--warm);box-shadow:var(--shadow)}
.secondary-btn{background:var(--warm);border:1px solid var(--bean-shell);color:var(--bean-deep)}
.primary-btn:hover,.secondary-btn:hover,.app-entry:hover,.furrow-nav a:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(106,122,56,.55);outline-offset:3px}
.media-slot{background:var(--soft-bg);border:1px solid var(--border);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}
.banner-slot{width:100%;height:200px}
.grid-slot{height:140px}
.long-slot{height:180px}
.app-slot{height:320px}
.section-block{margin:34px 0}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
.section-title p{margin:0;color:var(--muted);max-width:620px}
.card{background:var(--warm);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);padding:20px}
.soft-card{background:var(--soft-bg);border:1px solid var(--border);border-radius:10px;padding:18px}
.home-intro{padding:32px 0 20px;max-width:820px}
.home-intro .motto{font-size:20px;font-weight:800;color:var(--bean-deep);margin-bottom:10px}
.home-intro .actions{margin-top:20px}
.feature-grid,.four-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.feature-grid article,.four-grid article{background:var(--warm);border:1px solid var(--border);border-radius:10px;overflow:hidden;box-shadow:var(--shadow)}
.feature-grid .card-body,.four-grid .card-body{padding:16px 18px 18px}
.prose{max-width:850px}
.prose p{margin-bottom:16px}
.prose .step-label{font-weight:800;color:var(--bean-shell);margin-right:6px}
.timeline{position:relative;padding-left:24px}
.timeline:before{content:"";position:absolute;left:7px;top:7px;bottom:8px;width:2px;background:var(--border-strong)}
.timeline article{position:relative;background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px 20px;margin-bottom:16px}
.timeline article:before{content:"";position:absolute;left:-22px;top:24px;width:12px;height:12px;border-radius:50%;background:var(--sprout);border:3px solid var(--bean-light)}
.timeline .node{font-weight:800;color:var(--bean-shell);font-size:13px;margin-bottom:4px}
.note-split,.app-split,.article-split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.note-pane{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}
.topic-strips{display:grid;gap:10px}
.topic-strip{display:grid;grid-template-columns:minmax(120px,180px) 110px 1fr;gap:16px;align-items:center;background:var(--warm);border:1px solid var(--border);border-radius:9px;padding:14px 16px}
.topic-strip strong{color:var(--title)}
.status{display:inline-flex;justify-content:center;align-items:center;min-height:28px;border-radius:999px;padding:0 10px;background:var(--soft-bg);color:var(--bean-deep);font-size:12px;font-weight:800}
.status.green{background:rgba(106,122,56,.12);color:#475222}
.check-list,.method-list,.theme-list{display:grid;gap:12px}
.check-list article,.method-list article,.theme-list article{background:var(--warm);border:1px solid var(--border);border-radius:9px;padding:18px}
.observation-layout{display:grid;grid-template-columns:220px 1fr;gap:22px;align-items:start}
.observation-index{position:sticky;top:136px;background:var(--soft-bg);border:1px solid var(--border);border-radius:10px;padding:14px}
.observation-index a{display:block;padding:8px 10px;border-radius:7px;color:var(--bean-deep);font-size:13px}
.observation-index a:hover{background:var(--warm)}
.observation-content section{scroll-margin-top:138px;background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:16px}
.list-plain{margin:0;padding-left:20px}
.list-plain li{margin:7px 0}
.notice{border-left:4px solid var(--sprout);background:var(--soft-bg);padding:14px 16px;border-radius:0 8px 8px 0;margin:18px 0}
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px 20px}
.faq-item h2,.faq-item h3{font-size:16px}
.faq-item p:last-child{margin-bottom:0}
.link-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.site-footer{background:#2E220E;color:var(--bean-light);border-top:1px solid rgba(243,230,200,.2);font-size:13px;padding:34px 0 calc(28px + env(safe-area-inset-bottom))}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand p{margin:0;color:var(--bean-light)}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding-bottom:24px;border-bottom:1px solid rgba(243,230,200,.18)}
.footer-grid h2{font-size:13px;color:#FFF8E8;margin-bottom:8px}
.footer-grid a{display:block;color:var(--bean-light);padding:3px 0}
.footer-grid a:hover{color:#FFF8E8}
.footer-note{margin:20px 0 8px;max-width:900px;color:rgba(243,230,200,.84)}
.copyright{margin:0;color:rgba(243,230,200,.66)}
.site-overlay{position:fixed;z-index:150;inset:0;background:rgba(46,34,14,.46);opacity:0;pointer-events:none;transition:opacity .2s ease}.site-overlay.is-open{opacity:1;pointer-events:auto}
.drawer-panel{position:fixed;z-index:160;top:0;right:0;width:380px;max-width:88vw;height:100vh;background:var(--warm);box-shadow:-20px 0 40px rgba(46,34,14,.18);transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s ease;display:flex;flex-direction:column}
.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{min-height:78px;padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand div{display:grid;line-height:1.25}.drawer-brand span{font-size:11px;color:var(--muted)}
.drawer-close,.search-head button{height:40px;border:1px solid var(--bean-shell);background:var(--warm);color:var(--bean-deep);border-radius:8px;padding:0 12px}
.drawer-scroll{overflow-y:auto;padding:14px 16px 28px}.drawer-group{margin-bottom:18px}.drawer-group h2{font-size:13px;color:var(--bean-shell);margin:0 0 6px}.drawer-group a{display:grid;gap:2px;padding:9px 8px;border-radius:8px}.drawer-group a:hover{background:var(--soft-bg)}.drawer-group strong{font-size:14px;color:var(--title)}.drawer-group span{font-size:12px;color:var(--muted)}
.search-layer{position:fixed;z-index:155;top:78px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .18s ease,visibility .18s ease}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:12px auto;background:var(--warm);border:1px solid var(--border-strong);border-radius:12px;padding:20px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:start;justify-content:space-between;gap:16px}.search-head strong{font-size:18px;color:var(--title)}.search-head p{font-size:13px;color:var(--muted);margin:4px 0 0}.search-label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}.search-card input{width:100%;height:44px;border:1px solid var(--border-strong);border-radius:8px;background:#fffdf7;color:var(--text);padding:0 12px}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.search-presets a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:999px;background:var(--soft-bg);color:var(--bean-deep)}.search-empty{font-size:13px;color:var(--muted);margin:14px 0 0}.is-locked{overflow:hidden}
.mobile-bottom{display:none}
.two-column-details{display:grid;grid-template-columns:1fr 1fr;gap:16px}.two-column-details section{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px}
.term-sections{display:grid;gap:16px}.term-sections section{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}.term-sections section p:last-child{margin-bottom:0}
.contact-paths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.contact-paths section{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}
.brand-statement{max-width:880px}.brand-statement section{padding:22px 0;border-bottom:1px solid var(--border)}
.theme-bar{display:grid;grid-template-columns:160px 1fr;gap:18px;align-items:start;background:var(--warm);border:1px solid var(--border);border-radius:9px;padding:16px 18px;margin-bottom:12px}.theme-bar h2{font-size:16px;margin:0}.theme-bar p{margin:0}
@media (max-width:760px){
    .top-inner,.pod-inner,.footer-inner,.site-main{width:calc(100% - 32px)}
    .furrow-nav{display:none}
    .site-main{padding-top:104px;padding-bottom:82px}
    .feature-grid,.four-grid,.note-split,.article-split,.two-column-details,.contact-paths{grid-template-columns:1fr}
    .app-split{grid-template-columns:1fr}
    .app-slot{height:300px}
    .observation-layout{grid-template-columns:1fr}.observation-index{position:static;display:flex;gap:6px;overflow-x:auto;white-space:nowrap;padding:10px}.observation-index a{flex:0 0 auto}.observation-content section{scroll-margin-top:92px}
    .topic-strip{grid-template-columns:1fr auto;gap:8px 12px}.topic-strip p{grid-column:1/-1;margin-bottom:0}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .mobile-bottom{position:fixed;z-index:120;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-strong);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:12px;color:var(--bean-deep)}.mobile-bottom a.is-current{background:var(--bean-deep);color:var(--warm)}
    .search-layer{inset:0;background:var(--bean-deep);color:var(--warm);top:0}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;background:var(--bean-deep);color:var(--warm);box-shadow:none;padding:28px 16px}.search-head strong,.search-head p,.search-label{color:var(--warm)}.search-head button{background:transparent;color:var(--warm);border-color:rgba(255,248,232,.6)}.search-card input{background:var(--warm)}.search-presets a{background:rgba(255,248,232,.09);border-color:rgba(255,248,232,.28);color:var(--warm)}.search-empty{color:var(--bean-light)}
}
@media (max-width:520px){
    .pod-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:6px}.brand-link{max-width:150px}.app-entry{padding:0 8px}.drawer-toggle{min-width:52px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:18px 14px}.banner-slot{height:200px}.grid-slot{height:140px}.long-slot{height:180px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.mt16{margin-top:16px}.mt18{margin-top:18px}.app-mini-head,.app-title-row{display:flex;gap:12px;align-items:center;margin-bottom:12px}.no-margin{margin:0}.icon-slot{width:48px;height:48px;flex:0 0 48px;border-radius:10px}.icon-slot img{width:48px;height:48px;object-fit:contain}