:root{--bg:#F7F1D8;--deep:#E8DFA8;--paper:#FFF9E8;--soft:#F0E8C0;--ink:#16140C;--text:#2A2614;--muted:#5A5428;--aux:#7A7440;--yellow:#E8C430;--line:rgba(22,20,12,.12);--focus:rgba(232,196,48,.55);--shadow:0 12px 28px rgba(22,20,12,.10);--r:14px}*{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",Arial,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}.overlay-open{overflow:hidden}.top-edge{position:fixed;z-index:70;top:0;left:0;right:0;height:20px;background:var(--ink);color:var(--yellow);font-size:12px}.top-edge-inner,.brand-head-inner,.quick-grid-inner,.footer-inner,.site-main{width:min(960px,calc(100% - 32px));margin:0 auto}.top-edge-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:var(--yellow);min-height:20px;padding:0 4px}.brand-head{position:fixed;z-index:69;top:20px;left:0;right:0;height:54px;background:var(--paper);border-bottom:1px solid var(--line)}.brand-head-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-link{display:flex;align-items:center;min-height:44px}.brand-logo{display:block;height:24px;max-width:160px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-weight:800;font-size:16px;color:var(--ink)}.brand-actions{display:flex;gap:8px;align-items:center}.head-app-link,.menu-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:0 14px;font-size:14px}.head-app-link{background:var(--ink);color:var(--yellow)}.menu-button{background:var(--paper);border:1px solid var(--ink);color:var(--ink)}.quick-grid{position:fixed;z-index:68;top:74px;left:0;right:0;height:48px;background:var(--paper);border-bottom:1px solid var(--line)}.quick-grid-inner{height:48px;display:flex;gap:10px;align-items:center}.quick-item{width:120px;height:28px;border-radius:12px;border:1px solid var(--ink);display:flex;align-items:center;justify-content:center;font-size:13px;background:var(--paper);color:var(--ink)}.quick-item.is-current{background:var(--ink);color:var(--yellow)}.site-main{padding-top:146px;padding-bottom:60px;min-height:70vh}.page-shell{display:block}.page-kicker{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border:1px solid var(--focus);border-radius:999px;background:var(--paper);color:var(--muted);font-size:13px}.page-head{margin:0 0 28px}.page-head h1{font-size:24px;line-height:1.3;margin:12px 0 8px;color:var(--ink)}.lead{font-size:16px;line-height:1.8;color:var(--text);max-width:760px}.page-head p,.section-copy p{margin:.55em 0}.section{margin:28px 0}.section h2{font-size:20px;line-height:1.4;color:var(--ink);margin:0 0 12px}.section h3{font-size:16px;line-height:1.5;color:var(--ink);margin:0 0 8px}.muted{color:var(--muted)}.aux{color:var(--aux)}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn-primary,.btn-secondary{height:42px;min-width:124px;padding:0 16px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#16140C 0%,#E8C430 100%);color:#16140C;border:1px solid rgba(22,20,12,.25);font-weight:800}.btn-secondary{background:var(--paper);border:1px solid var(--ink);color:var(--ink)}a:hover,button:hover{filter:brightness(.98)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.media-slot{width:100%;min-height:120px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.h160{height:160px}.media-slot.h200{height:200px}.media-slot.h260{height:260px}.media-slot.h320{height:320px}.home-index{display:flex;gap:10px;margin-bottom:18px}.home-index a{width:120px;height:32px;border-radius:12px;border:1px solid var(--ink);display:flex;align-items:center;justify-content:center;background:var(--paper);font-size:13px}.home-hero{padding:24px;border-radius:16px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow)}.home-hero h1{font-size:24px;line-height:1.3;margin:0 0 8px;color:var(--ink)}.hero-line{font-weight:800;font-size:18px;color:var(--ink);margin:6px 0}.parallel-home{display:grid;grid-template-columns:1fr 1fr;gap:12px}.parallel-item{padding:16px;border-radius:14px;background:var(--soft);border:1px solid var(--line)}.parallel-item.with-image{display:grid;grid-template-columns:180px 1fr;gap:14px;align-items:center}.stack-home{position:relative;display:grid;gap:12px}.stack-home article{padding:18px;border-radius:14px;background:var(--paper);border:1px solid var(--line);box-shadow:0 8px 22px rgba(22,20,12,.06)}.stack-home article:nth-child(2){margin-left:28px}.stack-home article:nth-child(3){margin-left:56px}.fold-home{display:grid;gap:10px}.fold-home article{display:grid;grid-template-columns:160px 1fr;gap:14px;padding:14px;background:linear-gradient(100deg,var(--deep),var(--paper));border:1px solid var(--line);border-radius:14px}.fold-home article:nth-child(2){grid-template-columns:1fr}.shelf-home{display:grid;grid-template-columns:1fr 1fr;gap:12px}.shelf-home article{padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.shelf-home .shelf-image{grid-column:1/-1}.period-home{display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:10px;align-items:stretch}.period-home article{padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.period-home .period-visual{grid-column:1/-1}.status-home{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:14px 16px;border-radius:14px;background:var(--paper);border-left:5px solid var(--yellow);border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.status-label{font-weight:800;color:var(--ink)}.app-center{text-align:center;padding:24px;background:var(--ink);color:var(--bg);border-radius:16px}.app-center h2,.app-center h3{color:var(--yellow)}.app-center .media-slot{max-width:420px;margin:14px auto;background:var(--paper)}.app-center .app-icon{width:64px;height:64px;margin:0 auto 12px;min-height:64px}.points-list{display:grid;gap:10px}.points-list article{padding:16px 18px;border-radius:14px;background:var(--soft);border:1px solid var(--line)}.faq-six{display:grid;grid-template-columns:1fr 1fr;gap:10px}.faq-six details{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px}.faq-six summary{font-weight:800;color:var(--ink);cursor:pointer}.brand-intro{padding:22px;border-radius:16px;background:var(--deep);border:1px solid var(--line)}
/* inner layouts */
.stack-cards{display:grid;gap:14px}.stack-cards article{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.stack-cards article:nth-child(even){margin-left:34px}.stack-cards article:nth-child(3n){margin-right:34px}.parallel-strips{display:grid;gap:12px}.parallel-strips article{display:grid;grid-template-columns:170px 1fr;gap:18px;align-items:start;padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.parallel-strips .label{font-weight:800;font-size:18px;color:var(--ink);border-right:1px solid var(--line);padding-right:14px}.fold-strips{display:grid;gap:14px}.fold-strips article{padding:18px 18px 18px 28px;background:linear-gradient(105deg,var(--deep) 0 18%,var(--paper) 18% 100%);border:1px solid var(--line);border-radius:14px}.fold-strips article:nth-child(even){background:linear-gradient(255deg,var(--soft) 0 18%,var(--paper) 18% 100%);padding:18px 28px 18px 18px}.single-flow{display:grid;gap:0}.single-flow article{position:relative;padding:18px 18px 28px 48px;border-left:2px solid var(--yellow)}.single-flow article:before{content:"";position:absolute;left:-8px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--ink);border:3px solid var(--yellow)}.period-panels{display:grid;grid-template-columns:1fr 1.12fr 1fr;gap:12px}.period-panels article{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.status-list{display:grid;gap:10px}.status-list article{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:16px 18px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.status-list strong{color:var(--ink)}.memo-list{counter-reset:memo;display:grid;gap:12px}.memo-list article{counter-increment:memo;padding:18px 18px 18px 58px;position:relative;background:var(--paper);border:1px solid var(--line);border-radius:14px}.memo-list article:before{content:counter(memo);position:absolute;left:18px;top:18px;width:26px;height:26px;border-radius:50%;background:var(--yellow);color:var(--ink);font-weight:800;display:flex;align-items:center;justify-content:center}.method-list{display:grid;gap:12px}.method-list article{padding:18px;border-top:5px solid var(--ink);background:var(--paper);border-radius:0 0 14px 14px}.topic-list{display:grid;gap:12px}.topic-list article{display:grid;grid-template-columns:150px 1fr;gap:18px;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--paper)}.topic-list h2{font-size:18px}.center-cards{max-width:760px;margin:0 auto;display:grid;gap:14px;text-align:center}.center-cards article{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:16px}.center-app-page{text-align:center;max-width:820px;margin:0 auto}.center-app-page .media-slot{max-width:430px;margin:16px auto}.app-feature{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.app-feature span{padding:8px 12px;background:var(--paper);border:1px solid var(--line);border-radius:999px}.install-steps{display:grid;gap:0}.install-steps article{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}.terms{display:grid;gap:18px}.terms section{padding-bottom:18px;border-bottom:1px solid var(--line)}.help-bands{display:grid;gap:12px}.help-bands article{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.faq-list{display:grid;gap:10px}.faq-list details{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:16px 18px}.faq-list summary{cursor:pointer;font-weight:800;color:var(--ink)}.contact-lines{display:grid;gap:12px}.contact-lines article{padding:18px;background:var(--paper);border-left:5px solid var(--yellow);border-radius:12px}.about-banner{height:200px;margin-bottom:18px}.about-statement{display:grid;gap:16px}.about-statement section{padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--yellow);font-size:13px}.footer-inner{padding:32px 0 80px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:24px}.footer-brand img{height:24px;max-width:160px;object-fit:contain}.footer-brand strong{display:block;color:var(--yellow);font-size:16px}.footer-brand span{display:block;color:var(--bg);font-size:12px}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-groups h2{font-size:14px;color:var(--yellow);margin:0 0 8px}.footer-groups a{display:block;color:var(--bg);padding:3px 0}.copyright-note{max-width:760px;color:#d8d0ad;margin:26px 0 8px}.copyright{color:var(--yellow);margin:0}.backdrop{position:fixed;z-index:79;inset:0;background:rgba(22,20,12,.48);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}.smart-drawer{position:fixed;z-index:80;top:22px;right:16px;width:min(32vw,420px);max-height:calc(100vh - 44px);overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);transform:translateX(calc(100% + 40px));visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s}.smart-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:var(--paper);display:flex;justify-content:space-between;align-items:center;padding:14px;border-bottom:1px solid var(--line);z-index:2}.drawer-brand{display:flex;align-items:center;gap:8px}.drawer-brand img{height:24px;max-width:140px;object-fit:contain}.icon-close{min-height:44px;padding:0 12px;border-radius:12px;border:1px solid var(--ink);background:var(--paper);color:var(--ink)}.drawer-groups{padding:8px 14px 18px}.drawer-groups section{padding:10px 0;border-bottom:1px solid var(--line)}.drawer-groups h2{font-size:14px;margin:0 0 6px;color:var(--muted)}.drawer-groups a{display:block;padding:8px 0}.drawer-groups b{display:block;color:var(--ink);font-size:15px}.drawer-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.5}.search-layer{position:fixed;z-index:81;top:80px;left:50%;width:min(720px,calc(100% - 32px));transform:translate(-50%,-20px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:18px}.search-title-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-title-row h2{font-size:20px;margin:0;color:var(--ink)}.search-card label{display:block;color:var(--muted);margin:12px 0 6px}.search-card input{width:100%;min-height:44px;border:1px solid var(--ink);border-radius:12px;background:#fffdf4;padding:0 12px;color:var(--ink)}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-presets a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;background:var(--soft);border:1px solid var(--line)}.search-empty{color:var(--muted)}.mobile-bottom{display:none}
@media(max-width:760px){.quick-grid{display:none}.site-main{padding-top:96px;padding-bottom:86px}.top-edge-inner,.brand-head-inner,.footer-inner,.site-main{width:calc(100% - 32px)}.head-app-link,.menu-button{padding:0 11px}.parallel-home,.shelf-home,.faq-six,.period-panels{grid-template-columns:1fr}.parallel-item.with-image,.fold-home article,.parallel-strips article,.topic-list article,.install-steps article,.status-list article{grid-template-columns:1fr}.stack-home article:nth-child(2),.stack-home article:nth-child(3),.stack-cards article:nth-child(even),.stack-cards article:nth-child(3n){margin-left:0;margin-right:0}.period-home{grid-template-columns:1fr}.status-row{grid-template-columns:96px 1fr}.footer-groups{grid-template-columns:1fr 1fr}.smart-drawer{top:16px;right:12px;width:min(88vw,380px);max-height:calc(100vh - 32px)}.search-layer{z-index:81;inset:0;width:auto;transform:none;background:var(--ink);opacity:0}.search-layer.is-open{transform:none;opacity:1}.search-card{min-height:100vh;border:0;border-radius:0;background:var(--ink);color:var(--yellow);padding:24px 16px}.search-title-row h2,.search-card label{color:var(--yellow)}.search-card input{background:var(--paper)}.search-presets a{background:var(--yellow);color:var(--ink);border-color:var(--yellow)}.search-empty{color:var(--bg)}.search-card .icon-close{background:var(--ink);border-color:var(--yellow);color:var(--yellow)}.mobile-bottom{position:fixed;z-index:67;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(--line);display:grid;grid-template-columns:repeat(4,1fr)}.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}.footer-inner{padding-bottom:96px}}
@media(max-width:430px){.brand-logo{max-width:120px}.brand-actions{gap:4px}.head-app-link,.menu-button{font-size:13px;padding:0 9px}.home-hero{padding:18px}.status-row{grid-template-columns:1fr}.footer-groups{grid-template-columns:1fr}.media-slot.h320{height:280px}}
.media-slot.app-icon{width:64px;height:64px;min-height:64px;margin-left:auto;margin-right:auto}.media-slot.app-icon img{width:48px;height:48px;object-fit:contain;object-position:center}