:root{
  --bg:#F6EDE0;--deep:#EAD7C0;--card:#FFFFFF;--sub:#E8D2B4;
  --title:#3A2414;--text:#4A3220;--muted:#7A5634;--soft:#9A7450;
  --brand:#C4843C;--bright:#D9A05A;--dark:#8B5A2B;--cream:#FFF6EA;
  --border:rgba(196,132,60,.18);--strong-border:rgba(196,132,60,.46);
  --shadow:0 12px 28px rgba(58,36,20,.08);--radius:10px;--max:960px;--top:118px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",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%}
:focus-visible{outline:3px solid rgba(196,132,60,.28);outline-offset:3px}
.site-header{position:fixed;z-index:80;top:0;left:0;width:100%}
.top-strip{height:20px;background:var(--dark);color:var(--cream);font-size:12px;display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - var(--max))/2));white-space:nowrap}
.plain-button{height:20px;border:0;background:transparent;color:var(--cream);padding:0 4px;font-size:12px}
.brand-bar{height:54px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - var(--max))/2))}
.brand-home{display:flex;align-items:center;min-height:44px;font-size:16px;font-weight:800;color:var(--title)}
.brand-logo{height:24px;width:auto;object-fit:contain;object-position:center}
.brand-actions{display:flex;align-items:center;gap:8px}
.app-button,.menu-button{height:44px;min-width:44px;border-radius:10px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}
.app-button{background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 55%,var(--dark) 100%);color:var(--cream)}
.menu-button{background:#fff;color:var(--title);border:1px solid var(--strong-border)}
.quick-nav{height:44px;background:var(--cream);border-bottom:1px solid var(--border)}
.quick-inner{max-width:var(--max);height:44px;margin:0 auto;padding:0 16px;display:flex;align-items:center;gap:12px}
.knot-shape{width:18px;height:14px;border:2px solid var(--brand);border-radius:9px 4px 9px 4px;display:inline-block;background:#fff}
.quick-link{height:32px;display:inline-flex;align-items:center;padding:0 13px;border:1px solid var(--strong-border);border-radius:9px;color:var(--title);font-size:13px;font-weight:800;background:#fff}
.quick-link.is-current{background:var(--brand);color:var(--cream);border-color:var(--brand)}
.site-main{padding-top:calc(var(--top) + 28px);padding-bottom:56px;min-height:70vh}
.wrap{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.page-head{margin-bottom:24px}
.page-head h1,.home-intro h1{margin:7px 0 10px;font-size:24px;line-height:1.3;color:var(--title)}
.page-head p,.home-intro p{margin:0;max-width:790px}
.eyebrow{font-size:12px;color:var(--dark);font-weight:800;letter-spacing:.08em}
.home-intro{padding:28px 30px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:24px}
.home-knot{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;color:var(--dark);font-size:13px;font-weight:800}
.home-knot:before{content:"";width:18px;height:14px;border:2px solid var(--brand);border-radius:9px 4px 9px 4px;background:var(--cream)}
.primary-btn,.secondary-btn{height:42px;min-width:44px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;margin-top:16px}
.primary-btn{background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 55%,var(--dark) 100%);color:var(--cream)}
.secondary-btn{background:#fff;color:var(--title);border:1px solid var(--strong-border)}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin:34px 0 14px}
.section-title h2{margin:0;color:var(--title);font-size:20px}
.section-title a{font-size:13px;color:var(--dark);font-weight:800}
.media-slot{background:var(--cream);border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.media-160{height:160px;width:100%}
.media-168{height:168px;width:100%}
.media-176{height:176px;width:100%}
.media-knot{width:240px;max-width:100%;height:176px;border-radius:88px 28px 88px 28px}
.media-app{width:240px;max-width:100%;height:320px}
.media-icon{width:48px;height:48px;border-radius:10px}
.media-banner{width:100%;height:200px}
.mirror-slice{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:center;padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.dual-wheat{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.dual-wheat article{padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.dual-wheat article:first-child{background:var(--cream)}
.knot-page{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.knot-page article{padding:22px;background:#fff;border:1px solid var(--border);border-radius:34px 10px 34px 10px;box-shadow:var(--shadow)}
.single-note{display:grid;grid-template-columns:180px 1fr;gap:22px;align-items:center;padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.stack-cards{display:grid;gap:14px}
.stack-cards article{display:grid;grid-template-columns:170px 1fr;gap:20px;padding:20px;background:#fff;border-left:5px solid var(--brand);border-radius:0 var(--radius) var(--radius) 0}
.status-list{display:grid;gap:12px}
.status-row{display:grid;grid-template-columns:140px 1fr;gap:18px;align-items:center;padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.status-badge{min-height:40px;padding:0 14px;border-radius:999px;background:var(--cream);color:var(--title);display:inline-flex;align-items:center;justify-content:center;font-weight:800}
.memo-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.memo-list article{padding:20px;background:#fff;border:1px dashed var(--strong-border);border-radius:var(--radius)}
.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.method-grid article{padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.album-list{display:grid;gap:14px}
.album-list article{padding:20px 22px;background:#fff;border:1px solid var(--border);border-radius:10px 38px 10px 10px}
.center-card{max-width:760px;margin:0 auto;padding:26px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);text-align:left}
.center-card .media-slot{margin:0 auto 18px}
.wrap-knot{display:grid;grid-template-columns:270px 1fr;gap:28px;align-items:start}
.wrap-knot .app-art{display:grid;gap:12px;justify-items:start}
.wrap-knot .copy{display:grid;gap:14px}
.policy-stack{display:grid;gap:14px}
.policy-stack section{padding:20px 22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.policy-stack h2{margin:0 0 8px;font-size:18px;color:var(--title)}
.policy-stack p{margin:0}
.content-card{padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.content-card h2,.single-note h3,.mirror-slice h3,.dual-wheat h3,.knot-page h3{margin:0 0 8px;color:var(--title);font-size:16px}
.content-card p,.single-note p,.mirror-slice p,.dual-wheat p,.knot-page p{margin:0 0 12px}
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq-list{display:grid;gap:12px}
.faq-item{padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.faq-item h2,.faq-item h3{margin:0 0 8px;color:var(--title);font-size:16px}
.faq-item p{margin:0}
.brand-block{padding:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius)}
.brand-block p{margin:0 0 12px}
.about-banner{margin-bottom:18px}
.simple-links{display:flex;gap:10px;flex-wrap:wrap}
.simple-links a{min-height:44px;padding:0 14px;border:1px solid var(--strong-border);border-radius:10px;background:#fff;color:var(--title);display:inline-flex;align-items:center;font-weight:800}
.site-footer{background:var(--dark);color:var(--cream);border-top:1px solid rgba(255,246,234,.35);font-size:13px;padding:34px 0 82px}
.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.footer-brand img{filter:brightness(0) invert(1)}
.footer-brand div{display:flex;flex-direction:column}
.footer-brand strong{color:#fff;font-size:16px}
.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.footer-groups section{display:grid;align-content:start;gap:8px}
.footer-groups h2{font-size:13px;margin:0 0 4px;color:#fff}
.footer-groups a{min-height:30px;display:flex;align-items:center;color:var(--cream)}
.footer-note{margin:24px 0 8px;max-width:780px}
.copyright{margin:0;color:#F6DDC0}
.page-mask{position:fixed;z-index:90;inset:0;background:rgba(58,36,20,.34);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.page-mask.is-open{opacity:1;visibility:visible;pointer-events:auto}
.site-menu{position:fixed;z-index:100;left:0;right:0;bottom:0;width:100%;height:min(220px,42vh);background:#fff;border-top:1px solid var(--strong-border);box-shadow:0 -18px 60px rgba(58,36,20,.16);transform:translateY(100%);visibility:hidden;pointer-events:none;transition:.22s ease}
.site-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}
.menu-head{height:54px;max-width:var(--max);margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.menu-brand{display:flex;align-items:center;gap:10px;color:var(--title)}
.close-button{height:44px;padding:0 14px;border:1px solid var(--strong-border);background:#fff;color:var(--title);border-radius:10px;font-weight:800}
.menu-grid{height:calc(100% - 54px);max-width:var(--max);margin:0 auto;padding:12px 16px 18px;display:grid;grid-template-columns:1.4fr 1.4fr 1fr 1.5fr;gap:16px;overflow:auto}
.menu-grid section{display:grid;align-content:start}
.menu-grid h2{font-size:12px;color:var(--soft);margin:0 0 5px}
.menu-grid a{display:grid;grid-template-columns:76px 1fr;gap:8px;padding:3px 4px;border-radius:7px}
.menu-grid a:hover{background:var(--cream)}
.menu-grid b{font-size:13px;color:var(--title)}
.menu-grid span{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-search{position:fixed;z-index:101;top:74px;left:50%;width:min(640px,calc(100% - 32px));transform:translate(-50%,-18px);background:#fff;border:1px solid var(--border);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding: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-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}
.search-head>div{display:grid}
.search-head strong{color:var(--title);font-size:16px}
.search-head span{font-size:13px;color:var(--muted)}
.search-field{display:grid;gap:6px;margin-top:14px;color:var(--muted);font-size:13px}
.search-field input{height:44px;border:1px solid var(--strong-border);border-radius:10px;background:var(--cream);color:var(--title);padding:0 14px}
.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.search-presets a{min-height:40px;padding:0 14px;border-radius:999px;background:var(--cream);color:var(--title);display:inline-flex;align-items:center;font-weight:800}
.mobile-bottom{display:none}
@media(max-width:760px){
  :root{--top:74px}
  .quick-nav{display:none}
  .site-main{padding-top:calc(var(--top) + 20px);padding-bottom:72px}
  .brand-bar{padding:0 16px}
  .brand-home{max-width:42%}
  .brand-actions{gap:5px}
  .app-button,.menu-button{padding:0 10px}
  .home-intro{padding:22px}
  .mirror-slice,.single-note,.wrap-knot,.stack-cards article,.status-row{grid-template-columns:1fr}
  .dual-wheat,.knot-page,.memo-list,.method-grid,.content-grid{grid-template-columns:1fr}
  .media-knot,.media-app{margin:0 auto}
  .site-menu{height:68vh}
  .menu-grid{grid-template-columns:1fr 1fr;gap:18px}
  .menu-grid a{grid-template-columns:74px 1fr;padding:7px 4px}
  .menu-grid span{white-space:normal}
  .site-search{inset:0;width:100%;height:100%;transform:none;border-radius:0;background:var(--dark);color:var(--cream);padding:24px 16px;opacity:0}
  .site-search.is-open{transform:none;opacity:1}
  .site-search .search-head strong,.site-search .search-head span,.site-search .search-field{color:var(--cream)}
  .site-search .close-button,.site-search .search-presets a{background:var(--cream);color:var(--title)}
  .mobile-bottom{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);display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--border)}
  .mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:var(--title)}
  .mobile-bottom a.is-current{background:var(--brand);color:var(--cream)}
  .footer-groups{grid-template-columns:1fr 1fr}
}
@media(max-width:390px){
  .top-strip,.brand-bar{padding-left:10px;padding-right:10px}
  .app-button,.menu-button{font-size:13px;padding:0 8px}
  .menu-grid{grid-template-columns:1fr}
  .footer-groups{grid-template-columns:1fr}
}