:root{
  --paper:#F3E8D4;--deep:#E2D2B4;--content:#FBF3E4;--soft:#EDE0C8;--ink:#1A140A;--text:#2C2214;--muted:#5C4A30;--aux:#7C6844;--gold:#7A5A20;--copper:#B88838;--line:rgba(26,20,10,.12);--strong:rgba(122,90,32,.50);--shadow:0 12px 28px rgba(26,20,10,.10)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.lock-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.old-edge{height:20px;position:fixed;z-index:120;top:0;left:0;right:0;background:var(--ink);color:var(--copper);font-size:12px;display:flex;align-items:center;justify-content:space-between;padding:0 16px}.edge-brand{font-weight:700;letter-spacing:.08em}.edge-search{border:0;background:transparent;color:var(--copper);height:20px;padding:0 4px}.copper-head{height:54px;position:fixed;z-index:119;top:20px;left:0;right:0;background:var(--content);border-bottom:1px solid var(--strong);display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - 960px)/2))}.brand-link{min-width:44px;height:44px;display:flex;align-items:center}.brand-logo{height:24px;max-width:120px;object-fit:contain;object-position:center}.brand-text{font-size:16px;font-weight:800;color:var(--ink)}.head-actions{display:flex;align-items:center;gap:8px}.app-link,.drawer-toggle{height:44px;min-width:44px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;font-size:14px;white-space:nowrap}.app-link{border:1px solid var(--gold);background:var(--content);color:var(--ink)}.drawer-toggle{border:0;background:linear-gradient(135deg,var(--ink) 0%,var(--copper) 100%);color:var(--content)}.copper-dots{height:42px;position:fixed;z-index:118;top:74px;left:0;right:0;background:var(--content);border-bottom:1px solid var(--line);display:flex;justify-content:center;gap:54px}.dot-item{width:54px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:13px;line-height:1.1;color:var(--muted)}.dot{width:8px;height:8px;border:1.5px solid var(--ink);border-radius:50%;margin-bottom:3px;background:transparent}.dot-item.active .dot{background:var(--copper);border-color:var(--copper)}.dot-item.active{color:var(--ink);font-weight:700}.site-main{max-width:960px;margin:0 auto;padding:146px 16px 70px}.site-main h1{font-size:24px;line-height:1.3;margin:0 0 14px;color:var(--ink)}.site-main h2{font-size:20px;line-height:1.35;color:var(--ink);margin:0 0 12px}.site-main h3{font-size:16px;line-height:1.4;color:var(--ink);margin:0 0 8px}.site-main p{margin:0 0 12px}.eyebrow{font-size:12px;color:var(--gold);font-weight:700;letter-spacing:.08em;text-transform:uppercase}.lead{font-size:16px;color:var(--muted);max-width:760px}.page-intro{padding:24px 0 18px;border-bottom:1px solid var(--line);margin-bottom:22px}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn-primary,.btn-secondary{height:42px;min-width:44px;padding:0 18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--ink) 0%,var(--copper) 100%);color:var(--content)}.btn-secondary{background:var(--content);border:1px solid var(--gold);color:var(--ink)}a:hover,.edge-search:hover,.drawer-toggle:hover{filter:brightness(.97)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(184,136,56,.48);outline-offset:3px}.surface{background:var(--content);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}.section{margin:26px 0}.media-slot{background:var(--content);border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;display:block;object-fit:contain;object-position:center}.media-empty{width:100%;height:100%;background:linear-gradient(145deg,rgba(184,136,56,.07),rgba(26,20,10,.035))}.media-wide{height:168px}.media-banner{height:200px}.media-app{height:min(320px,58vw);min-height:220px}.media-card{height:180px}.media-small{height:128px}.mini-index{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}.mini-index a{background:var(--content);border:1px solid var(--line);border-radius:999px;padding:8px 12px;display:inline-flex;align-items:center;gap:8px}.mini-index i{width:8px;height:8px;border-radius:50%;background:var(--copper);display:block}.home-cut{display:grid;grid-template-columns:1fr;gap:12px}.triptych{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:12px}.triptych article{padding:18px}.insert-pages{display:grid;grid-template-columns:1fr 1fr;gap:18px}.insert-card{padding:18px}.insert-card:nth-child(2){margin-top:28px}.shelf-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}.shelf-card{padding:18px}.period-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.period-row article{padding:18px;border-top:3px solid var(--copper)}.status-stack{display:grid;gap:10px}.status-item{background:var(--content);border:1px solid var(--line);border-radius:9px;padding:14px 16px;display:grid;grid-template-columns:120px 1fr;gap:14px}.status-label{font-weight:800;color:var(--gold)}.app-feature{display:grid;gap:14px}.app-feature-copy{padding:20px}.reading-points{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.reading-points article{padding:18px}.faq-preview{display:grid;gap:10px}.faq-preview details,.faq-list details{background:var(--content);border:1px solid var(--line);border-radius:9px;padding:12px 14px}.faq-preview summary,.faq-list summary{cursor:pointer;font-weight:700;color:var(--ink)}.brand-block{padding:22px;background:var(--ink);color:var(--paper);border-radius:12px}.brand-block h2{color:var(--copper)}.brand-block p{color:var(--paper)}
/* 五类栏目版式 */
.layout-triptych .triptych{margin-top:18px}.layout-triptych .triptych article:first-child{grid-row:span 2}.layout-crosscut .crosscut{display:grid;gap:16px}.layout-crosscut .crosscut-row{display:grid;grid-template-columns:1.1fr .9fr;border-top:1px solid var(--strong);padding-top:18px}.layout-crosscut .crosscut-row:nth-child(even){grid-template-columns:.85fr 1.15fr}.layout-crosscut .crosscut-copy{padding:8px 18px}.layout-insert .insert-pages article{min-height:220px}.layout-under-image .under-image{max-width:700px;margin:0 auto}.layout-under-image .under-image .surface{padding:20px}.layout-copper-index .index-chain{display:grid;gap:10px}.layout-copper-index .index-chain a{background:var(--content);border-left:4px solid var(--copper);border-radius:8px;padding:14px 16px;display:grid;grid-template-columns:140px 1fr;gap:14px}.single-column{max-width:720px;margin:0 auto}.single-column .surface{padding:20px;margin-bottom:14px}.phase-stack{display:grid;gap:16px}.phase{background:var(--content);border:1px solid var(--line);border-radius:10px;padding:20px}.phase strong{display:inline-block;color:var(--gold);margin-bottom:6px}.checklist{display:grid;gap:12px}.check-row{background:var(--content);border:1px solid var(--line);border-radius:10px;padding:16px 18px;display:grid;grid-template-columns:150px 1fr;gap:16px}.method-flow{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.method-flow article{padding:18px}.topic-list{display:grid;gap:12px}.topic-item{padding:18px;display:grid;grid-template-columns:150px 1fr;gap:18px}.center-cards{max-width:740px;margin:0 auto;display:grid;gap:14px}.center-cards article{padding:20px;text-align:center}.terms{display:grid;gap:14px}.terms section{background:var(--content);border:1px solid var(--line);border-radius:10px;padding:18px}.terms section:nth-child(even){background:var(--soft)}.help-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.help-grid article{padding:18px}.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-paths article{padding:18px}.about-banner{margin:0 0 18px}.about-statement{display:grid;grid-template-columns:1fr;gap:14px}.about-statement article{padding:20px}.site-footer{background:var(--ink);color:var(--paper);border-top:1px solid var(--copper);padding:34px 16px calc(28px + env(safe-area-inset-bottom))}.footer-inner{max-width:960px;margin:0 auto}.footer-brand{display:inline-flex;align-items:center;gap:8px}.footer-brand img{height:24px;max-width:110px;object-fit:contain}.footer-brand strong{font-size:16px}.footer-brand span{color:var(--copper);font-size:13px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:22px 0}.footer-grid h2{font-size:13px;color:var(--copper);margin:0 0 8px}.footer-grid a{display:block;font-size:13px;color:var(--paper);padding:3px 0}.footer-note,.copyright{font-size:13px;color:#F3E8D4;margin:8px 0}.copyright{opacity:.78}.screen-overlay{position:fixed;z-index:80;inset:0;background:rgba(26,20,10,.45);visibility:hidden;opacity:0;pointer-events:none;transition:.18s}.screen-overlay.is-open{visibility:visible;opacity:1;pointer-events:auto}.site-drawer{position:fixed;z-index:100;left:16px;bottom:16px;width:240px;max-height:380px;overflow:auto;background:var(--content);border:1px solid var(--strong);box-shadow:var(--shadow);border-radius:12px;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(18px);transition:.18s}.site-drawer.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}.drawer-top{position:sticky;top:0;background:var(--content);display:flex;align-items:center;justify-content:space-between;padding:10px 12px;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:95px;object-fit:contain}.icon-close{width:44px;height:44px;border:0;border-radius:8px;background:var(--soft);color:var(--ink);font-size:22px}.drawer-groups{padding:4px 12px 12px}.drawer-groups section{border-bottom:1px solid var(--line);padding:10px 0}.drawer-groups section:last-child{border-bottom:0}.drawer-groups h2{font-size:13px;color:var(--gold);margin:0 0 6px}.drawer-groups a{display:block;padding:7px 4px}.drawer-groups b{display:block;color:var(--ink);font-size:14px}.drawer-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.45}.search-layer{position:fixed;z-index:95;top:74px;left:50%;width:min(720px,calc(100% - 32px));transform:translateX(-50%) translateY(-10px);visibility:hidden;opacity:0;pointer-events:none;transition:.18s}.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}.search-card{background:var(--content);border:1px solid var(--strong);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:16px}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.search-card label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.search-card input{width:100%;height:44px;border:1px solid var(--strong);border-radius:8px;background:var(--paper);color:var(--ink);padding:0 12px}.search-presets{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:12px}.search-presets a{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:10px 12px;color:var(--ink);font-weight:700}.search-presets span{display:block;color:var(--muted);font-size:12px;font-weight:400}.search-empty{font-size:13px;color:var(--muted);margin:12px 0 0}.mobile-bottom{display:none}
@media(max-width:700px){
  .old-edge{padding:0 16px}.copper-head{padding:0 16px}.copper-dots{display:none}.site-main{padding-top:104px;padding-bottom:86px}.site-main h1{font-size:24px}.site-main h2{font-size:20px}.triptych,.insert-pages,.shelf-cards,.period-row,.reading-points,.method-flow,.help-grid,.contact-paths{grid-template-columns:1fr}.insert-card:nth-child(2){margin-top:0}.layout-crosscut .crosscut-row,.layout-crosscut .crosscut-row:nth-child(even){grid-template-columns:1fr}.layout-crosscut .crosscut-copy{padding:8px 0}.status-item,.check-row,.topic-item,.layout-copper-index .index-chain a{grid-template-columns:1fr;gap:6px}.media-app{height:300px}.footer-grid{grid-template-columns:1fr 1fr}.site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}.site-drawer{left:6%;bottom:64px;width:88%;max-height:72vh}.search-layer{inset:0;width:100%;height:100%;transform:none;background:var(--ink)}.search-layer.is-open{transform:none}.search-card{height:100%;border:0;border-radius:0;background:var(--ink);color:var(--copper);padding:calc(26px + env(safe-area-inset-top)) 16px 76px;overflow:auto}.search-card label{color:var(--paper)}.search-card input{background:var(--content)}.search-presets{grid-template-columns:1fr}.search-presets a{background:#241C10;border-color:rgba(184,136,56,.35);color:var(--copper)}.search-presets span{color:var(--paper)}.search-head strong{color:var(--copper)}.search-head .icon-close{background:#2E2415;color:var(--paper)}.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:var(--ink);border-top:1px solid var(--copper)}.mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;color:var(--paper);font-size:13px}.mobile-bottom a.active{background:var(--copper);color:var(--ink);font-weight:800}.app-link,.drawer-toggle{padding:0 10px}.brand-logo{max-width:96px}
}
@media(max-width:380px){.head-actions{gap:4px}.app-link,.drawer-toggle{padding:0 8px}.footer-grid{grid-template-columns:1fr}.mini-index{gap:8px}.mini-index a{padding:7px 10px}}

.padded-20{padding:20px}.padded-18{padding:18px}.mt-18{margin-top:18px}.mt-14{margin-top:14px}.mt-12{margin-top:12px}.spacer-10{height:10px}