:root{--bg:#0C0B08;--deep:#080706;--panel:#161410;--panel2:#1E1A14;--title:#F3E6C0;--text:#E4D6B0;--muted:#B89A58;--aux:#8A7040;--gold:#C9A227;--gold2:#E0C056;--gold3:#8A6E18;--copper:#8A5A2A;--warm:#F7EFD4;--border:rgba(201,162,39,.22);--border2:rgba(201,162,39,.50);--shadow:0 12px 28px rgba(0,0,0,.45);--max:980px;--side:148px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden;padding-top:136px}body.no-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.museum-notice{position:fixed;z-index:90;top:0;left:0;right:0;height:20px;background:var(--deep);color:var(--gold2);font-size:12px;border-bottom:1px solid var(--border)}.museum-notice__inner{max-width:1180px;margin:0 auto;height:20px;display:flex;align-items:center;justify-content:space-between;padding:0 16px}.text-trigger,.menu-trigger{border:0;background:transparent;color:var(--gold2);cursor:pointer;padding:0 8px;min-height:20px}.site-header{position:fixed;z-index:89;top:20px;left:0;right:0;height:52px;background:#0f0d0a;border-bottom:1px solid var(--gold3)}.site-header__inner{max-width:1180px;margin:0 auto;height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 16px}.brand-mark{display:inline-flex;align-items:center;justify-self:start;min-height:44px}.brand-logo,.footer-logo,.sheet-brand img{height:24px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;color:var(--title);font-weight:700}.brand-en{font-size:13px;color:var(--muted);letter-spacing:.08em}.header-actions{justify-self:end;display:flex;align-items:center;gap:8px}.header-app,.menu-trigger{min-height:44px;display:inline-flex;align-items:center;padding:0 12px}.header-app{color:var(--gold2);font-size:13px}.menu-trigger{border:1px solid var(--border2);border-radius:7px}.dual-nav{position:fixed;z-index:88;top:72px;left:0;right:0;height:64px;background:#0b0907;border-bottom:1px solid var(--border)}.dual-nav__row{height:32px;display:flex;justify-content:center;align-items:stretch;gap:24px}.dual-nav a{font-size:13px;color:var(--text);display:flex;align-items:center;position:relative;min-width:74px;justify-content:center}.dual-nav a.is-active{color:var(--title)}.dual-nav a.is-active:after{content:"";position:absolute;left:10px;right:10px;bottom:0;height:2px;background:var(--gold2)}.side-nav{position:fixed;z-index:20;top:160px;left:max(16px,calc((100vw - 1280px)/2));width:148px;background:var(--deep);border:1px solid var(--border);border-radius:8px;padding:12px;box-shadow:var(--shadow);max-height:calc(100vh - 182px);overflow:auto}.side-group{padding:4px 0 12px}.side-group:last-child{padding-bottom:0}.side-group strong{display:block;color:var(--aux);font-size:12px;margin-bottom:6px}.side-group a{display:block;padding:7px 4px;color:var(--text);font-size:13px;border-bottom:1px solid rgba(201,162,39,.08)}.side-group a.is-active{color:var(--gold2)}.main-content{width:min(var(--max),calc(100% - 48px));margin:0 auto;padding:34px 0 80px}.page-block,.page-intro{margin:0 0 40px}.page-intro{padding:26px 0 10px}.eyebrow{display:inline-block;color:var(--muted);font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}h1,h2,h3{color:var(--title);margin-top:0}h1{font-size:24px;line-height:1.3;margin-bottom:14px}h2{font-size:20px;line-height:1.35;margin-bottom:12px}h3{font-size:16px;line-height:1.45;margin-bottom:8px}p{margin:0 0 14px}.hero-line{font-size:20px;color:var(--warm);font-weight:700}.section-rule{border-top:1px solid var(--border);padding-top:26px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head>a,.text-link{color:var(--gold2);font-size:13px}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{height:42px;min-width:120px;display:inline-flex;align-items:center;justify-content:center;border-radius:7px;padding:0 18px;font-size:14px;border:1px solid transparent}.btn-primary{background:linear-gradient(135deg,#E0C056 0%,#C9A227 55%,#8A6E18 100%);color:#1A1408;font-weight:700}.btn-secondary{background:#0d0b08;color:var(--title);border-color:var(--border2)}a:hover,.btn:hover{filter:brightness(1.08)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--gold2);outline-offset:3px}.media-slot{width:100%;background:#0a0907;border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin:0 0 18px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-176{height:176px}.media-160{height:160px}.banner-200{height:200px}.app-tall{height:320px}.icon-slot{height:64px;width:64px;min-width:64px;margin-left:auto}.icon-slot img{width:48px;height:48px}.numbered-list{display:grid;gap:16px}.numbered-list article{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}.scene-no{display:inline-block;color:var(--gold2);font-size:13px;margin-bottom:8px}.note-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.note-grid article,.works-grid article,.link-cards a,.help-grid article,.contact-types article{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}.flow-nodes{display:flex;flex-wrap:wrap;gap:12px}.flow-nodes article{flex:1 1 200px;background:var(--panel2);border-left:3px solid var(--gold3);padding:14px 16px;min-width:0}.flow-nodes strong{color:var(--gold2)}.works-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.work-type{font-size:12px;color:var(--muted);display:block;margin-bottom:6px}.period-stack{display:grid;gap:14px}.period-stack article{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}.status-board{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.status-board>div{background:var(--panel2);border-top:2px solid var(--gold3);padding:16px;border-radius:6px}.status-board span,.status-label{color:#1A1408;background:var(--gold2);font-weight:700;border-radius:999px;padding:4px 9px;font-size:12px;display:inline-block;margin-bottom:10px}.dark-band{background:#090806;border:1px solid var(--border2);border-radius:10px;padding:24px;display:grid;grid-template-columns:1.5fr .8fr;gap:22px;align-items:center}.dark-band__text p{color:var(--text)}.app-visuals{display:flex;align-items:flex-end;gap:10px;min-width:0}.faq-mini{display:grid;gap:10px}.faq-mini details{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:12px 14px}.faq-mini summary{cursor:pointer;color:var(--title);font-weight:700}.faq-mini p{margin:10px 0 0}.method-steps,.mini-points{display:flex;flex-wrap:wrap;gap:10px}.method-steps article{flex:1 1 220px;background:var(--panel);border:1px solid var(--border);padding:16px;border-radius:8px}.method-steps strong,.mini-points span{color:var(--gold2)}.flow-timeline{display:flex;flex-direction:column;gap:16px}.flow-timeline article{position:relative;background:var(--panel);border-left:3px solid var(--gold3);padding:18px 18px 18px 22px;border-radius:0 8px 8px 0}.flow-timeline article>span{display:inline-block;color:var(--gold2);font-size:12px;margin-bottom:6px}.single-notes,.feature-lines,.terms{display:grid;gap:16px}.single-notes article,.feature-lines article,.terms article{background:var(--panel);border-left:2px solid var(--gold3);padding:18px;border-radius:0 8px 8px 0}.status-lines{display:grid;gap:14px}.status-lines article{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:start;background:var(--panel);border:1px solid var(--border);padding:18px;border-radius:8px}.memo-list{display:grid;gap:14px}.memo-list article{display:grid;grid-template-columns:46px 1fr;gap:16px;background:var(--panel);border-bottom:1px solid var(--border);padding:18px}.memo-list article>span{color:var(--gold2);font-size:20px;font-weight:700}.method-stack{display:grid;gap:16px}.method-stack article{background:var(--panel);border:1px solid var(--border);padding:18px;border-radius:8px}.method-stack article>span{font-size:12px;color:var(--gold2)}.topic-list{display:grid;gap:14px}.topic-list article{display:grid;grid-template-columns:150px 1fr;gap:18px;padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.topic-list article>span{color:var(--gold2);font-weight:700}.topic-list a,.help-grid a{color:var(--gold2)}.plain-list,.step-list{padding-left:22px}.plain-list li,.step-list li{margin-bottom:10px}.link-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}.link-cards a{display:flex;flex-direction:column;min-height:96px;justify-content:center}.link-cards strong{color:var(--title)}.link-cards span{color:var(--muted);font-size:13px}.faq-list{display:grid;gap:14px}.faq-list article{background:var(--panel);border:1px solid var(--border);padding:18px;border-radius:8px}.help-grid,.contact-types{display:grid;grid-template-columns:1fr 1fr;gap:16px}.site-footer{background:var(--deep);border-top:1px solid var(--border2);color:var(--text);font-size:13px}.footer-inner{max-width:1060px;margin:0 auto;padding:28px 28px calc(70px + env(safe-area-inset-bottom))}.footer-brand{display:flex;align-items:center;gap:10px;padding-bottom:18px;border-bottom:1px solid var(--border)}.footer-brand span{color:var(--title);font-weight:700}.footer-brand em{font-style:normal;color:var(--muted);font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:22px 0}.footer-grid h2{font-size:13px;color:var(--muted);margin-bottom:8px}.footer-grid a{display:block;padding:4px 0}.footer-note,.copyright{color:var(--aux)}.overlay{position:fixed;z-index:110;inset:0;background:rgba(0,0,0,.72);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.full-menu{position:fixed;z-index:120;left:0;right:0;bottom:0;max-height:72vh;background:#0c0a07;border-top:1px solid var(--border2);box-shadow:var(--shadow);transform:translateY(105%);visibility:hidden;pointer-events:none;transition:.22s;overflow:auto;padding:16px 20px calc(18px + env(safe-area-inset-bottom))}.full-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-head,.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:980px;margin:0 auto 14px}.sheet-brand{display:flex;align-items:center;gap:10px}.close-button{min-height:44px;padding:0 14px;background:#11100c;color:var(--title);border:1px solid var(--border2);border-radius:7px;cursor:pointer}.menu-groups{max-width:980px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.menu-groups h2{font-size:13px;color:var(--muted)}.menu-groups a{display:block;border-top:1px solid var(--border);padding:9px 0}.menu-groups strong{display:block;color:var(--title)}.menu-groups span{display:block;color:var(--aux);font-size:12px;line-height:1.5}.search-layer{position:fixed;z-index:121;top:72px;left:50%;transform:translateX(-50%) translateY(-18px);width:min(920px,calc(100% - 32px));background:#0b0907;border:1px solid var(--border2);box-shadow:var(--shadow);padding:18px;border-radius:0 0 10px 10px;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.search-card{max-width:760px;margin:0 auto}.search-card label{display:block;color:var(--title);margin-bottom:8px}.search-card input{width:100%;height:44px;border:1px solid var(--border2);background:var(--panel);color:var(--warm);border-radius:7px;padding:0 12px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{min-height:40px;display:inline-flex;align-items:center;padding:0 12px;background:var(--panel2);border:1px solid var(--border);border-radius:6px;color:var(--gold2)}.search-tip{font-size:12px;color:var(--aux);margin-top:12px}.mobile-bottom{display:none}.about-head .media-slot{margin-top:16px}@media (max-width:1180px){.side-nav{display:none}.main-content{width:min(var(--max),calc(100% - 32px))}}@media (max-width:760px){body{padding-top:72px;padding-bottom:calc(48px + env(safe-area-inset-bottom))}.museum-notice__inner,.site-header__inner{padding-left:16px;padding-right:16px}.site-header__inner{grid-template-columns:minmax(0,1fr) auto}.brand-en{display:none}.brand-mark{min-width:0}.brand-logo{max-width:132px}.header-actions{gap:2px}.header-app,.menu-trigger{padding:0 8px}.dual-nav{display:none}.main-content{width:calc(100% - 32px);padding-top:22px}.page-intro{padding-top:18px}.note-grid,.works-grid,.status-board,.dark-band,.help-grid,.contact-types,.footer-grid,.menu-groups{grid-template-columns:1fr}.dark-band{padding:18px}.app-visuals{flex-direction:column;align-items:stretch}.icon-slot{margin:0}.status-lines article,.topic-list article{grid-template-columns:1fr}.status-lines article{gap:6px}.topic-list article{gap:8px}.link-cards{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.full-menu{max-height:72vh;padding-left:16px;padding-right:16px}.menu-groups{gap:6px}.search-layer{inset:0;width:auto;top:0;transform:none;border-radius:0;opacity:0}.search-layer.is-open{transform:none;opacity:1}.search-card{padding-top:16px}.mobile-bottom{position:fixed;z-index:95;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(4,1fr);background:#080706;border-top:1px solid var(--border2);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.is-active{background:var(--gold2);color:#1A1408;font-weight:700}.footer-inner{padding-left:16px;padding-right:16px;padding-bottom:84px}.footer-brand{flex-wrap:wrap}.media-176{height:160px}.app-tall{height:280px}.banner-200{height:200px}.memo-list article{grid-template-columns:38px 1fr;gap:10px}}@media (max-width:420px){.header-app{font-size:12px}.menu-trigger{font-size:12px}.brand-fallback{font-size:14px}.main-content{width:calc(100% - 32px)}h1{font-size:24px}.flow-nodes article{flex-basis:100%}}