:root{
  --bg:#F3E6C8;--deep-bg:#E4D2A8;--paper:#FFF8E8;--sub:#F7EDD4;--title:#3A2A12;--text:#4A3418;--muted:#7A5A28;--soft:#A08048;--deep:#5A3C16;--shell:#8A5A22;--green:#6A7A38;--border:rgba(90,60,22,.16);--strong-border:rgba(90,60,22,.42);--shadow:0 12px 28px rgba(58,42,18,.08)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);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}
button{font:inherit}
img{max-width:100%;display:block}
.skip-link{position:fixed;top:-80px;left:16px;z-index:500;background:var(--paper);color:var(--deep);padding:8px 12px;border-radius:8px}
.skip-link:focus{top:8px}
.bar-inner,.footer-inner,.page-shell{width:min(1080px,calc(100% - 32px));margin:0 auto}
.sprout-line{height:22px;background:var(--deep);color:var(--paper);position:fixed;left:0;right:0;top:0;z-index:120;border-bottom:1px solid rgba(255,248,232,.12)}
.sprout-line .bar-inner{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px;line-height:1}
.sprout-brand{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-button{height:22px;border:0;background:transparent;color:var(--paper);padding:0 2px;cursor:pointer}
.pod-bar{height:56px;position:fixed;left:0;right:0;top:22px;z-index:119;background:var(--bg);border-bottom:1px solid var(--strong-border)}
.pod-layout{height:56px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}
.pod-logo{justify-self:start;min-width:44px;min-height:44px;display:flex;align-items:center;font-weight:700;color:var(--title);font-size:16px}
.pod-logo img,.drawer-brand img,.footer-brand img{height:26px;width:auto;object-fit:contain;object-position:center}
.app-shortcut{justify-self:center;min-height:44px;padding:0 16px;display:inline-flex;align-items:center;border-radius:10px;border:1px solid var(--shell);background:var(--paper);color:var(--deep);font-size:14px;font-weight:700}
.pod-drawer-open,.drawer-close,.search-close{justify-self:end;min-width:58px;min-height:44px;border:1px solid var(--shell);background:linear-gradient(135deg,var(--shell),var(--deep));color:var(--paper);border-radius:10px;cursor:pointer;font-size:14px}
.ridge-tabs{height:38px;position:fixed;left:0;right:0;top:78px;z-index:118;background:var(--paper);border-bottom:1px solid var(--border)}
.ridge-layout{height:38px;display:flex;justify-content:space-between;align-items:center}
.ridge-left,.ridge-right{display:flex;gap:6px}
.ridge-tabs a{min-width:58px;height:30px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;color:var(--deep);font-size:13px}
.ridge-tabs a.is-active{background:var(--deep);color:var(--paper)}
.site-main{padding-top:116px;min-height:70vh}
.page-shell{padding:32px 0 64px}
.page-hero{margin-bottom:24px}
.eyebrow{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border-radius:999px;background:var(--deep-bg);color:var(--deep);font-size:13px;font-weight:700;letter-spacing:.04em}
h1,h2,h3{margin:0;color:var(--title);line-height:1.3}
h1{font-size:24px;margin-top:12px}
h2{font-size:20px}
h3{font-size:16px}
p{margin:0 0 14px}
.lead{max-width:800px;margin-top:14px;font-size:16px;color:var(--muted)}
.main-sentence{font-size:20px;color:var(--deep);font-weight:800;margin-top:10px}
.section{margin:28px 0;padding:24px;background:var(--paper);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}
.section>h2{margin-bottom:14px}
.section>h3{margin:18px 0 8px}
.button-primary,.button-secondary{min-height:44px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap;font-weight:700}
.button-primary{background:linear-gradient(135deg,var(--shell),var(--deep));color:var(--paper)}
.button-secondary{background:var(--paper);border:1px solid var(--shell);color:var(--deep)}
a:hover,.button-primary:hover,.button-secondary:hover{text-decoration:underline;text-underline-offset:3px}
a:focus-visible,button:focus-visible{outline:3px solid rgba(106,122,56,.45);outline-offset:2px}
.hero-actions{margin-top:18px}
.media-slot{width:100%;min-height:140px;background:var(--sub);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot.banner-slot{height:200px}
.media-slot.grid-image{height:140px}
.media-slot.wide-image{height:180px}
.media-slot.app-poster{height:min(340px,70vw)}
.media-slot .content-image{width:100%;height:100%;object-fit:contain;object-position:center}
.media-placeholder{width:54px;height:54px;border-radius:50%;border:1px dashed var(--strong-border);background:rgba(255,248,232,.65);position:relative}
.media-placeholder:after{content:"";position:absolute;inset:17px;border-radius:50%;background:var(--deep-bg)}
.home-intro{padding:36px 0 10px;max-width:760px}
.home-intro p{max-width:740px}
.banner-wrap{margin:20px 0 30px}
.quad-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.quad-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:14px;min-width:0}
.quad-card h2,.quad-card h3{margin:12px 0 8px}
.quad-card p{color:var(--muted)}
.longread{display:grid;gap:14px}
.longread .marker{font-weight:800;color:var(--shell);letter-spacing:.08em}
.timeline{position:relative;padding-left:26px}
.timeline:before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--strong-border)}
.timeline-item{position:relative;padding:0 0 22px 16px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item:before{content:"";position:absolute;left:-24px;top:8px;width:12px;height:12px;border-radius:50%;background:var(--green);border:3px solid var(--paper)}
.timeline-item strong{display:block;color:var(--deep);margin-bottom:4px}
.note-split,.app-split,.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.note-panel{padding:18px;background:var(--sub);border-radius:10px;border:1px solid var(--border)}
.topic-bars{display:grid;gap:10px}
.topic-bar{display:grid;grid-template-columns:minmax(120px,.8fr) minmax(0,2fr) auto;gap:12px;align-items:center;padding:14px 16px;background:var(--paper);border:1px solid var(--border);border-left:5px solid var(--shell);border-radius:10px}
.status{font-size:13px;color:var(--deep);background:var(--deep-bg);border-radius:999px;padding:4px 9px;white-space:nowrap}
.app-split{align-items:center}.app-copy p{margin-bottom:13px}
.icon-note{display:flex;gap:12px;align-items:center;margin:14px 0;padding:12px;background:var(--sub);border-radius:10px}
.icon-note .media-slot{width:56px;height:56px;min-height:56px;flex:0 0 56px}
.faq-mini{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.faq-mini details{background:var(--paper);border:1px solid var(--border);border-radius:10px;padding:14px}
.faq-mini summary{cursor:pointer;font-weight:700;color:var(--deep)}
.faq-mini p{margin-top:10px;color:var(--muted)}
.section-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.observation-index{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start}
.observation-nav{position:sticky;top:140px;display:grid;gap:8px;background:var(--deep);padding:14px;border-radius:12px;color:var(--paper)}
.observation-nav a{padding:9px 10px;border-radius:8px;border:1px solid rgba(255,248,232,.18)}
.observation-content{display:grid;gap:16px}
.observation-entry{background:var(--paper);padding:22px;border-radius:12px;border:1px solid var(--border)}
.observation-entry h2{margin-bottom:10px}
.memo-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
.memo-column{display:grid;gap:16px}.memo-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}
.memo-card.emphasis{background:var(--deep);color:var(--paper)}
.memo-card.emphasis h2,.memo-card.emphasis h3{color:var(--paper)}
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.checklist li{padding:14px 16px 14px 44px;background:var(--paper);border:1px solid var(--border);border-radius:10px;position:relative}
.checklist li:before{content:"✓";position:absolute;left:16px;top:13px;color:var(--green);font-weight:900}
.method-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.method-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}.method-card h2{margin-bottom:8px}
.theme-list{display:grid;gap:14px}.theme-item{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px;display:grid;grid-template-columns:160px 1fr;gap:18px}.theme-label{font-weight:800;color:var(--deep);font-size:18px}
.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.product-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}.product-card h2{margin-bottom:8px}
.clause{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:22px;margin:14px 0}.clause h2{margin-bottom:10px}.clause p:last-child{margin-bottom:0}
.service-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.service-card{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}.service-card h2{margin-bottom:8px}
.faq-list{display:grid;gap:12px}.faq-item{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:18px}.faq-item h2{font-size:17px;margin-bottom:8px}.faq-item p{margin:0}
.contact-lanes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.contact-lane{background:var(--paper);border:1px solid var(--border);border-radius:12px;padding:20px}.contact-lane h2{margin-bottom:8px}
.statement-band{background:var(--deep);color:var(--paper);padding:28px;border-radius:12px;margin:22px 0}.statement-band h2{color:var(--paper);margin-bottom:10px}
.site-footer{background:#2E220E;color:var(--bg);border-top:1px solid rgba(243,230,200,.22)}
.footer-inner{padding:34px 0 82px}.footer-brand{display:flex;align-items:center;gap:12px;font-size:14px;margin-bottom:22px}.footer-en{color:#D9C99F;font-size:12px}
.footer-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-groups h2{color:var(--bg);font-size:14px;margin-bottom:8px}.footer-groups section{display:grid;gap:7px}.footer-groups a{color:#E7D9B8;font-size:13px}.footer-note,.copyright{font-size:13px;color:#D9C99F}.footer-note{margin-top:26px;padding-top:18px;border-top:1px solid rgba(243,230,200,.18)}
.page-overlay{position:fixed;inset:0;background:rgba(46,34,14,.45);z-index:200;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.page-overlay[hidden]{display:block}
.pod-drawer{position:fixed;z-index:220;top:0;right:0;bottom:0;width:min(380px,88vw);background:var(--paper);box-shadow:-18px 0 40px rgba(46,34,14,.18);transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;overflow-y:auto}.pod-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:var(--paper);z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px;min-height:44px}.drawer-groups{padding:14px}.drawer-groups section{margin-bottom:18px}.drawer-groups h2{font-size:14px;color:var(--muted);margin:0 0 8px}.drawer-groups a{display:grid;gap:2px;padding:10px 12px;border-radius:9px;border:1px solid transparent}.drawer-groups a:hover{background:var(--sub);border-color:var(--border);text-decoration:none}.drawer-groups strong{color:var(--deep)}.drawer-groups span{font-size:12px;color:var(--muted)}
.search-layer{position:fixed;z-index:215;top:78px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:10px auto;background:var(--paper);border:1px solid var(--strong-border);border-radius:12px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;justify-content:space-between;gap:16px;align-items:center}.search-head strong{font-size:18px;color:var(--title)}.search-head p{margin:2px 0 0;color:var(--muted)}.preset-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.preset-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;background:var(--sub);border:1px solid var(--border);border-radius:10px;color:var(--deep)}
.ui-locked{overflow:hidden}.mobile-bottom{display:none}
@media (max-width:760px){
  .ridge-tabs{display:none}.site-main{padding-top:78px;padding-bottom:58px}.bar-inner,.footer-inner,.page-shell{width:calc(100% - 32px)}
  .pod-layout{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.pod-logo{min-width:0;overflow:hidden}.pod-logo span{white-space:nowrap}.app-shortcut{padding:0 10px}.pod-drawer-open{min-width:54px}
  .home-intro{padding-top:28px}.quad-grid,.note-split,.app-split,.two-col,.faq-mini,.method-steps,.product-grid,.service-grid,.contact-lanes{grid-template-columns:1fr}.quad-card{padding:12px}.section{padding:18px}
  .topic-bar{grid-template-columns:1fr;gap:5px}.status{justify-self:start}.observation-index{grid-template-columns:1fr}.observation-nav{position:static;grid-template-columns:repeat(2,minmax(0,1fr));top:auto}.memo-layout{grid-template-columns:1fr}.theme-item{grid-template-columns:1fr;gap:8px}
  .footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{padding-bottom:82px}
  .mobile-bottom{position:fixed;z-index:150;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:var(--paper);border-top:1px solid var(--strong-border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--deep);min-width:0}.mobile-bottom a.is-active{background:var(--deep);color:var(--paper)}
  .search-layer{top:0;bottom:0;background:var(--deep);padding:18px;overflow:auto}.search-card{width:100%;margin:0;background:transparent;border:0;box-shadow:none;color:var(--paper);padding-top:70px}.search-head strong{color:var(--paper)}.search-head p{color:var(--bg)}.search-close{background:var(--paper);color:var(--deep);border-color:var(--paper)}.preset-links a{background:rgba(255,248,232,.1);border-color:rgba(255,248,232,.24);color:var(--paper)}
}
@media (max-width:420px){.sprout-brand{max-width:74vw}.footer-groups{grid-template-columns:1fr 1fr}.observation-nav{grid-template-columns:1fr 1fr}}