*{box-sizing:border-box}
:root{
  --bean-light:#F3E6C8;--bean-deep:#5A3C16;--shell:#8A5A22;--sprout:#6A7A38;
  --warm:#FFF8E8;--layer:#E4D2A8;--soft:#F7EDD4;--title:#3A2A12;
  --text:#4A3418;--muted:#7A5A28;--quiet:#A08048;--border:rgba(90,60,22,.16);
  --border-strong:rgba(90,60,22,.42);--shadow:0 12px 28px rgba(58,42,18,.08);
  --max:1080px;
}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:var(--bean-light);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{color:inherit}
img{display:block;max-width:100%;height:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.sprout-line{position:fixed;z-index:1002;top:0;left:0;right:0;height:22px;background:var(--bean-deep);color:var(--warm);font-size:12px}
.top-inner,.pod-inner,.ridge-inner{max-width:var(--max);margin:0 auto;padding:0 20px}
.top-inner{height:22px;display:flex;align-items:center;justify-content:space-between}
.top-brand{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.text-button{border:0;background:transparent;color:var(--warm);min-height:22px;padding:0 6px;cursor:pointer}
.pod-bar{position:fixed;z-index:1001;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-slot{justify-self:start;display:flex;align-items:center;min-height:44px}
.brand-logo{height:26px;width:auto;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:800;color:var(--title)}
.app-entry{justify-self:center;min-height:44px;padding:0 15px;border:1px solid var(--shell);border-radius:9px;background:var(--warm);color:var(--bean-deep);font-size:14px;font-weight:700;display:flex;align-items:center}
.drawer-open,.drawer-close,.search-close{cursor:pointer;min-height:44px;border:1px solid var(--shell);border-radius:9px;background:var(--warm);color:var(--bean-deep);padding:0 15px;font-size:14px}
.drawer-open{justify-self:end}
.ridge-tabs{position:fixed;z-index:1000;top:78px;left:0;right:0;height:38px;background:var(--warm);border-bottom:1px solid var(--border)}
.ridge-inner{height:38px;display:flex;align-items:center;justify-content:space-between}
.ridge-left,.ridge-right{display:flex;align-items:center;gap:8px}
.ridge-tabs a{height:28px;min-width:58px;padding:0 12px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}
.ridge-tabs a:hover,.ridge-tabs a:focus-visible,.ridge-tabs a.is-current{background:var(--bean-deep);color:var(--warm);outline:none}
.site-main{padding-top:116px;min-height:60vh}
.container{max-width:var(--max);margin:0 auto;padding:32px 20px}
.page-head{padding:34px 0 22px;border-bottom:1px solid var(--border)}
.eyebrow{margin:0 0 8px;color:var(--shell);font-size:13px;font-weight:800;letter-spacing:.08em}
h1,h2,h3{color:var(--title);margin-top:0}
h1{font-size:24px;line-height:1.3;margin-bottom:14px}
h2{font-size:20px;line-height:1.4;margin-bottom:12px}
h3{font-size:16px;line-height:1.5;margin-bottom:8px}
p{margin:0 0 1em}
.lead{font-size:16px;line-height:1.8;max-width:800px}
.muted{color:var(--muted)}
.primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 18px;border-radius:9px;font-size:14px;font-weight:800;white-space:nowrap}
.primary-btn{background:linear-gradient(135deg,#8A5A22 0%,#5A3C16 100%);color:var(--warm)}
.secondary-btn{background:var(--warm);border:1px solid var(--shell);color:var(--bean-deep)}
.primary-btn:hover,.primary-btn:focus-visible,.secondary-btn:hover,.secondary-btn:focus-visible,.app-entry:hover,.app-entry:focus-visible,.drawer-open:hover,.drawer-open:focus-visible,.drawer-close:hover,.drawer-close:focus-visible,.search-close:hover,.search-close:focus-visible{transform:translateY(-1px);box-shadow:0 8px 18px rgba(58,42,18,.12);outline:2px solid rgba(106,122,56,.45);outline-offset:2px}
.media-slot{background:var(--warm);border:1px solid var(--border);border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.banner-slot{height:200px}
.media-170{height:170px}.media-180{height:180px}.media-210{height:210px}.media-220{height:220px}.mb-18{margin-bottom:18px}.mb-20{margin-bottom:20px}.mb-22{margin-bottom:22px}.mt-22{margin-top:22px}.no-margin{margin:0}

.section{padding:34px 0}
.section + .section{border-top:1px solid var(--border)}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-title p{margin:0;color:var(--muted)}
.intro-block{padding:42px 0 30px}
.intro-block .lead{max-width:760px}
.intro-actions{margin-top:18px}
.quad-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.quad-card{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:14px;box-shadow:var(--shadow)}
.quad-card .media-slot{height:140px;margin-bottom:14px;background:var(--soft)}
.quad-card p:last-child{margin-bottom:0}
.longread-card{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:22px;box-shadow:var(--shadow)}
.longread-card .media-slot{height:180px;margin:16px 0;background:var(--soft)}
.longread-points{display:grid;gap:10px}
.longread-points p{padding:10px 0;margin:0;border-bottom:1px dashed var(--border)}
.longread-points p:last-child{border-bottom:0}
.timeline{position:relative;margin-left:7px;padding-left:28px}
.timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--shell);opacity:.38}
.timeline-item{position:relative;padding:0 0 22px}
.timeline-item:before{content:"";position:absolute;left:-28px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--bean-deep);box-shadow:0 0 0 5px var(--layer)}
.timeline-item:last-child{padding-bottom:0}
.note-split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.note-panel{background:var(--soft);border:1px solid var(--border);border-radius:10px;padding:20px}
.note-panel ul,.check-list,.plain-list{margin:0;padding-left:20px}
.note-panel li,.check-list li,.plain-list li{margin:.45em 0}
.topic-bars{display:grid;gap:10px}
.topic-bar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;background:var(--warm);border:1px solid var(--border);border-left:5px solid var(--shell);border-radius:9px;padding:14px 16px}
.topic-bar span{color:var(--muted);font-size:13px}
.status{display:inline-flex;align-items:center;justify-content:center;min-width:70px;height:28px;padding:0 10px;border-radius:999px;background:var(--soft);color:var(--bean-deep);font-weight:800;font-size:12px}
.app-showcase{display:grid;grid-template-columns:minmax(220px,360px) minmax(0,1fr);gap:28px;align-items:center}
.app-visual{height:340px;background:var(--soft)}
.app-icon-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.app-icon-row img{width:48px;height:48px;object-fit:contain}
.mini-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.info-block{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}
.faq-mini{display:grid;gap:10px}
.faq-mini details{background:var(--warm);border:1px solid var(--border);border-radius:9px;padding:12px 14px}
.faq-mini summary{font-weight:800;color:var(--title);cursor:pointer}
.faq-mini p{margin:10px 0 0}
.brand-story{background:var(--layer);border-radius:10px;padding:22px}
.content-prose{max-width:820px}
.content-prose p{margin-bottom:1.05em}
.reading-index{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px}
.index-menu{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:14px;align-self:start;position:sticky;top:136px}
.index-menu a{display:block;padding:10px;border-radius:8px;color:var(--muted)}
.index-menu a:hover,.index-menu a:focus-visible{background:var(--soft);color:var(--bean-deep);outline:none}
.observation-stack{display:grid;gap:18px}
.observation-card{display:grid;grid-template-columns:140px minmax(0,1fr);gap:18px;padding:18px;background:var(--warm);border:1px solid var(--border);border-radius:10px}
.observation-card .tag{display:flex;align-items:center;justify-content:center;min-height:90px;background:var(--soft);border-radius:8px;font-weight:800;color:var(--bean-deep);text-align:center;padding:12px}
.four-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.four-grid .panel{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}
.column-notes{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.column-notes .column{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}
.column .note-entry{padding:14px 0;border-bottom:1px dashed var(--border)}
.column .note-entry:last-child{border-bottom:0}
.process-axis{max-width:850px}
.process-axis .timeline-item{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:16px 18px 16px 20px;margin-bottom:14px}
.process-axis.timeline:before{left:6px}
.process-axis .timeline-item:before{left:-29px}
.memo-list{display:grid;gap:12px}
.memo-item{display:grid;grid-template-columns:130px minmax(0,1fr);gap:18px;background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:16px}
.memo-item strong{color:var(--bean-deep)}
.method-steps{counter-reset:method;display:grid;gap:16px}
.method-step{position:relative;background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px 18px 18px 64px}
.method-step:before{counter-increment:method;content:counter(method);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;background:var(--bean-deep);color:var(--warm);display:flex;align-items:center;justify-content:center;font-weight:800}
.theme-list{display:grid;gap:14px}
.theme-item{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px}
.theme-item .meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.theme-item .meta span{font-size:12px;color:var(--muted);background:var(--soft);border-radius:999px;padding:4px 9px}
.product-layout{display:grid;grid-template-columns:minmax(240px,340px) minmax(0,1fr);gap:28px;align-items:start}
.product-aside{background:var(--soft);border:1px solid var(--border);border-radius:10px;padding:18px;position:sticky;top:136px}
.product-aside .media-slot{height:320px;margin-bottom:14px}
.feature-stack{display:grid;gap:14px}
.feature-block{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px}
.terms{display:grid;gap:18px}
.term-section{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:20px}
.help-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.help-card{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px}
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px}
.contact-paths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.contact-card{background:var(--warm);border:1px solid var(--border);border-radius:10px;padding:18px}
.contact-card a{color:var(--shell);text-decoration:underline;text-underline-offset:3px}
.about-band{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:start}
.about-band .quote-box{background:var(--bean-deep);color:var(--warm);border-radius:10px;padding:22px}
.about-band .quote-box h2{color:var(--warm)}
.about-band .quote-box p:last-child{margin-bottom:0}
.site-footer{background:#2E220E;color:var(--bean-light);border-top:1px solid rgba(243,230,200,.25);padding:36px 0 28px}
.footer-inner{max-width:var(--max);margin:0 auto;padding:0 20px}
.footer-brand{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid rgba(243,230,200,.18)}
.footer-logo{height:26px;width:auto;object-fit:contain}
.footer-brand div{display:flex;flex-direction:column;line-height:1.35}
.footer-brand strong{font-size:16px;color:var(--warm)}
.footer-brand span{font-size:12px;color:var(--bean-light)}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;padding:22px 0}
.footer-grid h2{font-size:13px;color:var(--warm);margin-bottom:8px}
.footer-grid a{display:block;font-size:13px;color:var(--bean-light);padding:4px 0}
.footer-note,.footer-copy{font-size:13px;color:var(--bean-light)}
.footer-copy{margin-bottom:0;color:#D8C8A4}
.site-overlay{position:fixed;z-index:1100;inset:0;background:rgba(46,34,14,.38);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
.site-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}
.pod-drawer{position:fixed;z-index:1200;top:0;right:0;bottom:0;width:380px;max-width:88vw;background:var(--warm);box-shadow:-20px 0 50px rgba(46,34,14,.18);transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;overflow-y:auto}
.pod-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.drawer-head{position:sticky;top:0;background:var(--warm);z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}
.drawer-brand{display:flex;align-items:center;gap:10px}
.drawer-groups{padding:10px 16px 30px}
.drawer-groups section{padding:10px 0;border-bottom:1px solid var(--border)}
.drawer-groups section:last-child{border-bottom:0}
.drawer-groups h2{font-size:13px;margin-bottom:7px;color:var(--muted)}
.drawer-groups a{display:grid;grid-template-columns:74px minmax(0,1fr);gap:10px;padding:9px;border-radius:8px}
.drawer-groups a:hover,.drawer-groups a:focus-visible{background:var(--soft);outline:none}
.drawer-groups b{color:var(--title)}
.drawer-groups span{font-size:12px;color:var(--muted);line-height:1.55}
.search-layer{position:fixed;z-index:1190;top:78px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.2s ease}
.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}
.search-card{max-width:760px;margin:0 auto;background:var(--warm);border:1px solid var(--border-strong);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:18px}
.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.search-head p{margin:4px 0 0;color:var(--muted)}
.search-input-wrap{display:block;margin:14px 0}
.search-input-wrap input{width:100%;height:44px;border:1px solid var(--border-strong);border-radius:9px;background:#fffdf7;color:var(--text);padding:0 13px;outline:none}
.search-input-wrap input:focus{box-shadow:0 0 0 3px rgba(106,122,56,.18)}
.quick-links{display:flex;gap:8px;flex-wrap:wrap}
.quick-links a{min-height:40px;display:flex;align-items:center;padding:0 13px;border:1px solid var(--shell);border-radius:999px;color:var(--bean-deep);background:var(--soft)}
.search-empty{margin:12px 0 0;color:var(--muted)}
.modal-open{overflow:hidden}
.mobile-bottom{display:none}
@media (max-width:760px){
  .top-inner,.pod-inner,.ridge-inner,.container,.footer-inner{padding-left:16px;padding-right:16px}
  .ridge-tabs{display:none}
  .site-main{padding-top:78px;padding-bottom:calc(56px + env(safe-area-inset-bottom))}
  .top-brand{max-width:72vw}
  .pod-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}
  .brand-slot{min-width:0}
  .brand-logo{max-width:128px}
  .app-entry,.drawer-open{padding:0 11px}
  .container{padding-top:24px;padding-bottom:24px}
  .intro-block{padding-top:30px}
  .quad-grid,.note-split,.mini-columns,.four-grid,.column-notes,.help-grid,.contact-paths,.about-band{grid-template-columns:1fr}
  .app-showcase,.product-layout,.reading-index{grid-template-columns:1fr}
  .app-visual{height:320px}
  .reading-index .index-menu,.product-aside{position:static}
  .observation-card,.memo-item{grid-template-columns:1fr}
  .observation-card .tag{min-height:60px}
  .topic-bar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .search-layer{top:0;bottom:0;background:var(--bean-deep);padding:16px}
  .search-card{height:100%;max-width:none;border:0;border-radius:12px;background:var(--bean-deep);color:var(--warm);box-shadow:none;padding:16px;overflow-y:auto}
  .search-card strong,.search-card .search-head p{color:var(--warm)}
  .search-close{background:var(--warm)}
  .search-input-wrap input{background:var(--warm)}
  .quick-links a{background:var(--warm);color:var(--bean-deep);border-color:var(--warm)}
  .search-empty{color:var(--bean-light)}
  .mobile-bottom{position:fixed;z-index:1050;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{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}
  .mobile-bottom a.is-current{background:var(--bean-deep);color:var(--warm)}
  .site-footer{padding-bottom:calc(80px + env(safe-area-inset-bottom))}
}
@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:16px}
  .app-entry{font-size:13px}
  .drawer-open{font-size:13px}
}