:root{
  --bg:#F7F1D8;--deep:#E8DFA8;--paper:#FFF9E8;--soft:#F0E8C0;
  --ink:#16140C;--text:#2A2614;--muted:#5A5428;--quiet:#7A7440;--yellow:#E8C430;
  --line:rgba(22,20,12,.12);--strong-line:rgba(232,196,48,.55);--shadow:0 12px 28px rgba(22,20,12,.10);
  --radius:14px;--max:960px;
}
*{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}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%;height:auto}
.wrap{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.lock-scroll{overflow:hidden}
.site-head{position:fixed;inset:0 0 auto 0;z-index:70}
.intel-strip{height:20px;background:var(--ink);color:var(--yellow);font-size:12px}
.strip-inner{height:20px;display:flex;align-items:center;justify-content:space-between}
.plain-trigger{height:20px;border:0;background:transparent;color:var(--yellow);padding:0 2px}
.brand-row{height:54px;background:var(--paper);border-bottom:1px solid var(--line)}
.brand-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-link{display:inline-flex;align-items:center;min-height:44px;max-width:55%}
.brand-logo,.panel-logo,.footer-logo{height:24px;width:auto;object-fit:contain;object-position:left center}
.brand-text{font-size:16px;font-weight:800;letter-spacing:.04em;color:var(--ink)}
.brand-actions{display:flex;align-items:center;gap:8px}
.text-action,.panel-trigger{height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:0 14px;font-size:14px}
.text-action{background:var(--ink);color:var(--yellow)}
.panel-trigger{border:1px solid var(--ink);background:var(--paper);color:var(--ink)}
.smart-grid{height:48px;background:var(--paper);border-bottom:1px solid var(--line)}
.smart-grid-inner{height:48px;display:flex;align-items:center;justify-content:center;gap:14px}
.smart-link{width:120px;height:28px;display:flex;align-items:center;justify-content:center;border:1px solid var(--ink);border-radius:12px;background:var(--paper);color:var(--ink);font-size:13px;line-height:1}
.smart-link.is-current{background:var(--ink);color:var(--yellow)}
.site-main{padding-top:142px;min-height:70vh}
.page-hero,.page-section{padding:34px 0}
.page-hero h1,.intro-block h1{font-size:24px;line-height:1.3;margin:0 0 12px;color:var(--ink)}
h2{font-size:20px;line-height:1.35;color:var(--ink);margin:0 0 12px}h3{font-size:16px;line-height:1.4;color:var(--ink);margin:0 0 8px}
p{margin:0 0 14px}
.lead{font-size:16px;color:var(--muted);max-width:760px}
.eyebrow{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:999px;background:var(--yellow);color:var(--ink);font-weight:700;font-size:12px;margin-bottom:12px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.btn{min-height:42px;padding:9px 16px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;line-height:1;border:1px solid var(--ink)}
.btn-primary{background:linear-gradient(135deg,#16140C 0%,#E8C430 100%);color:var(--ink);font-weight:800}
.btn-secondary{background:var(--paper);color:var(--ink)}
.btn:hover,.btn:focus-visible,.text-action:hover,.text-action:focus-visible,.panel-trigger:hover,.panel-trigger:focus-visible,.smart-link:hover,.smart-link:focus-visible{outline:2px solid var(--yellow);outline-offset:2px}
.image-slot{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}
.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.image-slot.short{height:160px}.image-slot.medium{height:220px}.image-slot.banner{height:200px}.image-slot.app{height:320px;max-width:420px;margin:0 auto}
.index-switch{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}
.index-switch a{min-height:58px;border:1px solid var(--ink);border-radius:14px;background:var(--paper);display:flex;align-items:center;justify-content:center;font-weight:800}
.intro-block{padding:34px 0 24px}
.split-strips{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.strip-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.stack-cards{display:grid;gap:14px}.stack-card{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.stack-card:nth-child(2){margin-left:5%}.stack-card:nth-child(3){margin-left:10%}
.fold-pair{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}.fold-card{background:var(--deep);border-left:6px solid var(--yellow);border-radius:12px;padding:18px}
.dual-notes{display:grid;grid-template-columns:1fr 1fr;gap:14px}.note-card{background:var(--paper);border:1px solid var(--strong-line);border-radius:var(--radius);padding:18px}
.phase-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.phase{background:var(--ink);color:var(--bg);border-radius:14px;padding:18px}.phase h3{color:var(--yellow)}
.status-list{display:grid;gap:10px}.status-item{display:grid;grid-template-columns:120px 1fr;gap:14px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px}.status-label{font-weight:800;color:var(--ink)}
.app-center{text-align:center}.app-center .image-slot{margin:18px auto}.app-icon{width:48px;height:48px;object-fit:contain;margin:0 auto 10px}
.read-points{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.read-point{background:var(--paper);border:1px solid var(--line);padding:16px;border-radius:12px}
.faq-six{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-brief{background:var(--soft);border-radius:12px;padding:16px}
.center-card{max-width:720px;margin:0 auto;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);text-align:center}
.center-card .image-slot{margin:16px auto}
.rule-list{display:grid;gap:12px}.rule-block{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px}.rule-block h2{font-size:18px}
.memo-list{display:grid;gap:10px}.memo-item{display:grid;grid-template-columns:42px 1fr;gap:12px;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px}.memo-num{width:42px;height:42px;border-radius:12px;background:var(--ink);color:var(--yellow);display:flex;align-items:center;justify-content:center;font-weight:900}
.topic-list{display:grid;gap:12px}.topic-item{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px}.topic-item .tag{display:inline-block;font-size:12px;background:var(--yellow);color:var(--ink);padding:3px 8px;border-radius:999px;margin-bottom:8px}
.method-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.method-step{background:var(--paper);border-top:4px solid var(--yellow);border-radius:12px;padding:16px}
.single-flow{display:grid;gap:14px}.single-flow article{background:var(--paper);border-left:4px solid var(--ink);border-radius:10px;padding:18px}
.band-list{display:grid;gap:12px}.band{background:linear-gradient(90deg,var(--paper),var(--soft));border:1px solid var(--line);border-radius:12px;padding:16px;display:grid;grid-template-columns:140px 1fr;gap:16px}
.policy-sections{display:grid;gap:16px}.policy-sections section{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:20px}
.about-banner{margin:18px 0 22px}
.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--yellow);padding:32px 0 82px;margin-top:40px;font-size:13px}
.footer-brand{padding-bottom:18px;border-bottom:1px solid rgba(247,241,216,.18)}
.footer-brandmark{display:flex;align-items:center;gap:12px}.footer-brandmark div{display:flex;flex-direction:column}.footer-brandmark strong{font-size:16px;color:var(--yellow)}.footer-brandmark span{font-size:12px;color:var(--bg)}
.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:22px 0}.footer-groups section{display:flex;flex-direction:column;gap:7px}.footer-groups h2{font-size:13px;color:var(--yellow);margin:0 0 4px}.footer-groups a{color:var(--bg)}
.footer-note{color:#F7F1D8;border-top:1px solid rgba(247,241,216,.18);padding-top:18px}.footer-note p{margin-bottom:6px}
.side-panel{position:fixed;top:82px;right:16px;width:min(32vw,420px);max-height:calc(100vh - 100px);background:var(--paper);border:1px solid var(--ink);border-radius:16px;z-index:100;box-shadow:var(--shadow);transform:translateX(calc(100% + 40px));transition:transform .22s ease;visibility:hidden;pointer-events:none;overflow:auto}
.side-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.panel-head{position:sticky;top:0;background:var(--paper);display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line);z-index:2}.panel-brand{display:flex;align-items:center;gap:10px}.panel-body{padding:10px 14px 16px}.panel-body section{padding:12px 0;border-bottom:1px solid var(--line)}.panel-body section:last-child{border-bottom:0}.panel-body h2{font-size:14px;margin-bottom:8px}.panel-body a{display:block;padding:8px 4px;border-radius:8px}.panel-body a:hover,.panel-body a:focus-visible{background:var(--soft);outline:none}.panel-body strong{display:block;color:var(--ink)}.panel-body span{display:block;font-size:12px;color:var(--muted)}
.close-btn{min-width:60px;min-height:40px;border-radius:10px;border:1px solid var(--ink);background:var(--paper);color:var(--ink)}
.search-panel{position:fixed;top:74px;left:0;right:0;z-index:95;visibility:hidden;pointer-events:none;transform:translateY(-16px);opacity:0;transition:.2s ease}
.search-panel.is-open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}
.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:var(--paper);border:1px solid var(--ink);border-radius:0 0 16px 16px;padding:18px;box-shadow:var(--shadow)}
.search-topline{display:flex;justify-content:space-between;align-items:center;gap:12px}.search-look{border:1px dashed var(--ink);border-radius:12px;min-height:48px;padding:12px;margin:10px 0;color:var(--muted)}.preset-links{display:flex;flex-wrap:wrap;gap:8px}.preset-links a{min-height:40px;padding:8px 12px;border-radius:10px;background:var(--ink);color:var(--yellow);display:inline-flex;align-items:center}
.page-overlay{position:fixed;inset:0;background:rgba(22,20,12,.46);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.mobile-bottom{display:none}
@media (max-width:760px){
  .wrap{width:min(100% - 32px,var(--max))}.smart-grid{display:none}.site-main{padding-top:74px}.brand-link{max-width:45%}.brand-actions{gap:6px}.text-action,.panel-trigger{padding:0 10px}
  .split-strips,.fold-pair,.dual-notes,.phase-row,.read-points,.faq-six,.method-flow{grid-template-columns:1fr}.status-item,.band{grid-template-columns:1fr}.stack-card:nth-child(2),.stack-card:nth-child(3){margin-left:0}
  .side-panel{top:76px;right:10px;width:calc(100% - 20px);max-height:calc(100vh - 94px)}
  .search-panel{top:20px;bottom:0;background:var(--ink)}.search-card{height:100%;width:100%;border-radius:0;border:0;background:var(--ink);color:var(--yellow);padding:24px 16px;overflow:auto}.search-topline strong{color:var(--yellow)}.search-card p{color:var(--bg)}.search-look{border-color:var(--yellow);color:var(--bg)}.search-card .close-btn{border-color:var(--yellow);background:var(--ink);color:var(--yellow)}.preset-links a{background:var(--yellow);color:var(--ink)}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--ink);display:grid;grid-template-columns:repeat(4,1fr);z-index:80}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px}.mobile-bottom a.is-current{background:var(--yellow);color:var(--ink);font-weight:800}
  .site-footer{padding-bottom:78px}.footer-groups{grid-template-columns:1fr 1fr}.image-slot.app{height:300px}.index-switch{grid-template-columns:1fr 1fr}.page-hero,.page-section{padding:28px 0}
}

/* new version accents */
.hero-ribbon{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 22px}.hero-ribbon span{padding:7px 11px;border:1px solid var(--ink);border-radius:999px;background:var(--paper);font-size:12px;font-weight:700}.feature-ledger{display:grid;gap:12px}.feature-ledger article{display:grid;grid-template-columns:110px 1fr;gap:14px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:16px}.feature-ledger strong{color:var(--ink)}.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.mini-grid article{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:16px}.timeline-lite{display:grid;gap:10px}.timeline-lite article{background:var(--paper);border-left:5px solid var(--yellow);padding:16px;border-radius:12px}.quote-card{background:var(--ink);color:var(--bg);border-radius:16px;padding:22px}.quote-card h2,.quote-card h3{color:var(--yellow)}@media(max-width:760px){.feature-ledger article,.mini-grid{grid-template-columns:1fr}}