:root{--bg:#0C0B08;--deep:#080706;--panel:#161410;--panel2:#1E1A14;--title:#F3E6C0;--text:#E4D6B0;--muted:#B89A58;--soft:#8A7040;--gold:#C9A227;--bright:#E0C056;--darkgold:#8A6E18;--copper:#8A5A2A;--cream:#F7EFD4;--line:rgba(201,162,39,.22);--line2:rgba(201,162,39,.50);--shadow:0 12px 28px rgba(0,0,0,.45);--top:136px}
*{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}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}a,button,input{outline:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:2px}.museum-notice{position:fixed;z-index:80;top:0;left:0;right:0;height:20px;background:#080706;color:var(--bright);display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-size:12px;border-bottom:1px solid rgba(201,162,39,.15)}.notice-brand{font-weight:700}.notice-search{height:20px;padding:0 4px;border:0;background:transparent;color:var(--bright);font-size:12px}.museum-head{position:fixed;z-index:79;top:20px;left:0;right:0;height:52px;background:#0a0907;border-bottom:1px solid var(--gold)}.head-inner{max-width:1220px;height:100%;margin:auto;display:grid;grid-template-columns:minmax(120px,1fr) auto minmax(120px,1fr);align-items:center;gap:12px;padding:0 16px}.brand-mark{justify-self:start;min-height:44px;display:flex;align-items:center}.logo-image{height:24px;width:auto;object-fit:contain;object-position:center}.logo-fallback{font-weight:700;color:var(--title);font-size:16px}.brand-en{color:var(--muted);font-size:13px;letter-spacing:.12em;white-space:nowrap}.head-actions{justify-self:end;display:flex;align-items:center;gap:8px}.app-link,.menu-button{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border:1px solid var(--line2);border-radius:7px;background:#11100c;color:var(--title);font-size:13px}.menu-button{min-width:54px}.double-nav{position:fixed;z-index:78;top:72px;left:0;right:0;height:64px;background:#0a0907;border-bottom:1px solid var(--line)}.double-row{height:32px;display:flex;align-items:center;justify-content:center;gap:28px}.double-row a{font-size:13px;color:var(--muted);line-height:30px;border-bottom:2px solid transparent;white-space:nowrap}.double-row a.is-current{color:var(--cream);border-bottom-color:var(--bright)}.site-shell{max-width:1160px;margin:0 auto;padding:calc(var(--top) + 26px) 16px 64px;display:grid;grid-template-columns:148px minmax(0,980px);gap:32px;justify-content:center}.side-museum{position:sticky;top:154px;align-self:start;border-right:1px solid var(--line);padding-right:18px}.side-group{margin-bottom:24px}.side-group h2{margin:0 0 7px;color:var(--soft);font-size:12px;font-weight:600;letter-spacing:.12em}.side-group a{display:block;padding:5px 0;color:var(--muted);font-size:13px}.side-group a.is-current{color:var(--bright);font-weight:700}.page-main{min-width:0}.page-main h1{margin:0 0 12px;color:var(--title);font-size:24px;line-height:1.3}.page-main h2{margin:0 0 12px;color:var(--title);font-size:20px;line-height:1.4}.page-main h3{margin:0 0 8px;color:var(--title);font-size:16px}.page-main p{margin:0 0 14px}.eyebrow{display:inline-block;color:var(--bright);font-size:12px;letter-spacing:.12em;margin-bottom:8px}.lead{color:var(--text);font-size:16px;max-width:820px}.hero-intro{padding:34px 0 28px;border-bottom:1px solid var(--line)}.hero-intro .hero-line{font-size:22px;color:var(--cream);margin:8px 0 14px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn-primary,.btn-secondary{height:42px;padding:0 18px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#E0C056 0%,#C9A227 55%,#8A6E18 100%);color:#1A1408}.btn-secondary{border:1px solid var(--line2);background:#0d0c09;color:var(--title)}.btn-primary:hover{filter:brightness(1.08)}.btn-secondary:hover{border-color:var(--bright);color:var(--cream)}.content-section{padding:30px 0;border-bottom:1px solid var(--line)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}.section-head p{color:var(--muted);font-size:13px;margin:0}.image-slot{background:#090806;border:1px solid var(--line);border-radius:9px;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.slot-wide{height:176px}.image-slot.slot-note{height:160px}.image-slot.slot-head{height:150px}.image-slot.slot-banner{height:200px}.image-slot.slot-app{height:300px;max-width:240px}.image-slot.slot-icon{width:64px;height:64px}.number-list{display:grid;gap:14px}.number-item{border-top:1px solid var(--line);padding-top:16px}.number-label{color:var(--bright);font-size:13px;margin-bottom:6px}.number-item h3{font-size:17px}.number-item p{color:var(--text)}.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.note-card{background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:18px}.note-card .image-slot{margin-bottom:14px}.node-flow{display:flex;flex-wrap:wrap;gap:12px}.node{flex:1 1 190px;border-left:3px solid var(--gold);padding:12px 14px;background:var(--panel);border-radius:0 8px 8px 0}.node span{display:block;color:var(--bright);font-size:12px;margin-bottom:5px}.works-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.work-card{border:1px solid var(--line);border-radius:8px;background:#12100d;padding:16px}.work-card p{color:var(--muted);margin:0}.periods{display:grid;gap:12px}.period-row{display:grid;grid-template-columns:90px 1fr;gap:16px;padding:14px 0;border-top:1px solid var(--line)}.period-row strong{color:var(--bright)}.status-board{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center;padding:13px 15px;background:var(--panel);border:1px solid var(--line);border-radius:8px}.status-tag{color:#171106;background:linear-gradient(135deg,#E0C056,#C9A227);font-weight:700;text-align:center;border-radius:5px;padding:5px 8px}.app-band{display:grid;grid-template-columns:1fr 260px;gap:28px;align-items:center;background:#080706;border:1px solid var(--line2);border-radius:10px;padding:24px}.app-band p{color:var(--text)}.app-visuals{display:flex;justify-content:center;align-items:center;gap:10px}.faq-mini{display:grid;gap:10px}.faq-mini details{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:12px 14px}.faq-mini summary{cursor:pointer;color:var(--title);font-weight:700}.faq-mini p{color:var(--muted);margin:8px 0 0}.article-head{padding:24px 0 20px;border-bottom:1px solid var(--line);margin-bottom:24px}.article-head .lead{color:var(--muted)}.prose-stack{display:grid;gap:18px}.prose-block{padding:18px;background:var(--panel);border-left:2px solid var(--gold);border-radius:0 8px 8px 0}.prose-block p:last-child{margin-bottom:0}.prose-block ul{margin:8px 0 0;padding-left:20px}.prose-block li{margin:5px 0}.split-notes{display:grid;grid-template-columns:1fr 1fr;gap:16px}.split-notes article{padding:18px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.single-notes{display:grid;gap:14px}.single-notes article{padding:18px 20px;background:linear-gradient(90deg,#161410 0%,#100f0c 100%);border-bottom:1px solid var(--line)}.timeline{display:flex;flex-wrap:wrap;gap:12px}.timeline article{flex:1 1 210px;min-width:0;padding:18px;background:var(--panel);border-top:2px solid var(--gold);border-radius:6px}.timeline small{color:var(--bright)}.memo-list{counter-reset:memo;display:grid;gap:12px}.memo-list article{counter-increment:memo;padding:16px 16px 16px 54px;position:relative;border:1px solid var(--line);border-radius:8px}.memo-list article:before{content:counter(memo,decimal-leading-zero);position:absolute;left:16px;top:14px;color:var(--bright);font-weight:700}.method-list{display:grid;gap:16px}.method-step{display:grid;grid-template-columns:58px 1fr;gap:15px;align-items:start}.method-step b{height:44px;border:1px solid var(--line2);border-radius:7px;display:flex;align-items:center;justify-content:center;color:var(--bright)}.topic-list{display:grid;gap:14px}.topic-row{padding:18px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:170px 1fr;gap:20px}.topic-row strong{color:var(--title)}.terms{display:grid;gap:12px}.terms section{padding:16px 18px;border:1px solid var(--line);background:#11100d;border-radius:8px}.faq-full{display:grid;gap:12px}.faq-full article{padding:18px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.faq-full h2{font-size:17px;margin-bottom:8px}.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-cards article{padding:18px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.brand-banner{margin:0 0 22px}.about-points{display:grid;gap:16px}.about-points article{display:grid;grid-template-columns:160px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}.about-points h2{font-size:17px}.site-footer{background:#080706;border-top:1px solid var(--gold);color:var(--text);padding:30px 16px calc(30px + env(safe-area-inset-bottom))}.footer-inner{max-width:1120px;margin:auto}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:22px}.footer-brand span{font-weight:700;color:var(--title)}.footer-brand em{font-style:normal;color:var(--muted);font-size:12px;letter-spacing:.09em}.footer-map{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-map h2{font-size:13px;color:var(--bright);margin:0 0 8px}.footer-map a{display:block;font-size:13px;color:var(--text);padding:3px 0}.rights-note,.copyright{font-size:13px;color:var(--muted);margin:18px 0 0;max-width:900px}.copyright{color:var(--soft)}.page-overlay{position:fixed;z-index:90;inset:0;background:rgba(0,0,0,.68);opacity:0;pointer-events:none;transition:.2s}.page-overlay.is-open{opacity:1;pointer-events:auto}.menu-sheet{position:fixed;z-index:92;left:0;right:0;bottom:0;max-height:72vh;background:#0b0a08;border-top:1px solid var(--gold);transform:translateY(105%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s;padding:8px 16px calc(20px + env(safe-area-inset-bottom));overflow:auto}.menu-sheet.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-handle{width:44px;height:4px;background:var(--soft);border-radius:4px;margin:0 auto 10px}.sheet-top{display:flex;align-items:center;justify-content:space-between;max-width:980px;margin:auto}.sheet-brand{display:flex;align-items:center;gap:9px;color:var(--title)}.sheet-close{min-width:60px;height:44px;border:1px solid var(--line2);background:#11100c;color:var(--title);border-radius:7px}.sheet-groups{max-width:980px;margin:16px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.sheet-groups h2{font-size:13px;color:var(--bright);margin:0 0 8px}.sheet-groups a{display:block;padding:8px 0;border-bottom:1px solid var(--line)}.sheet-groups b{display:block;color:var(--title);font-size:14px}.sheet-groups span{display:block;color:var(--muted);font-size:12px;line-height:1.5}.search-panel{position:fixed;z-index:93;top:72px;left:0;right:0;visibility:hidden;pointer-events:none}.search-panel.is-open{visibility:visible;pointer-events:auto}.search-card{max-width:760px;margin:0 auto;background:#0b0a08;border:1px solid var(--line2);border-top:0;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.search-head strong{color:var(--title)}.search-head button{height:40px;padding:0 12px;border:1px solid var(--line);background:#11100c;color:var(--title);border-radius:7px}.search-card label{display:block;color:var(--muted);font-size:13px;margin-bottom:7px}.search-card input{width:100%;height:44px;border:1px solid var(--line2);background:#080706;color:var(--cream);padding:0 12px;border-radius:7px}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.search-presets a{padding:8px 11px;border:1px solid var(--line);border-radius:7px;color:var(--text);font-size:13px}.search-empty{font-size:13px;color:var(--muted);margin:12px 0 0}.mobile-bottom{display:none}.modal-open{overflow:hidden}.subtle{color:var(--muted)}.inline-links{display:flex;flex-wrap:wrap;gap:8px}.inline-links a{border-bottom:1px solid var(--line2);color:var(--title)}
@media(max-width:900px){:root{--top:72px}.double-nav,.side-museum{display:none}.site-shell{display:block;padding:calc(var(--top) + 20px) 16px 78px;max-width:980px}.head-inner{grid-template-columns:1fr auto}.brand-en{display:none}.footer-map{grid-template-columns:1fr 1fr}.menu-sheet{max-height:72vh}.sheet-groups{grid-template-columns:1fr 1fr}.search-panel{top:0;bottom:0;background:#080706}.search-card{height:100%;max-width:none;border:0;padding:24px 16px}.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);background:#080706;border-top:1px solid var(--gold);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}.mobile-bottom a.is-current{background:var(--gold);color:#171106;font-weight:700}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}.note-columns,.works-grid,.split-notes,.contact-cards{grid-template-columns:1fr}.app-band{grid-template-columns:1fr}.app-visuals{justify-content:flex-start}.period-row,.status-row,.topic-row,.about-points article{grid-template-columns:1fr}.image-slot.slot-app{max-width:220px}.hero-intro{padding-top:26px}}
@media(max-width:560px){.museum-notice{padding:0 12px}.head-inner{padding:0 12px;gap:8px}.app-link,.menu-button{padding:0 10px}.logo-image{max-width:138px}.footer-map,.sheet-groups{grid-template-columns:1fr}.sheet-groups{gap:8px}.sheet-groups section{border-top:1px solid var(--line);padding-top:10px}.hero-intro .hero-line{font-size:20px}.app-band{padding:18px}.method-step{grid-template-columns:48px 1fr}.method-step b{height:40px}.image-slot.slot-wide{height:160px}.image-slot.slot-banner{height:180px}.site-shell{padding-left:16px;padding-right:16px}.page-main h1{font-size:24px}.page-main h2{font-size:19px}}

.mb14{margin-bottom:14px}.mb20{margin-bottom:20px}.mt14{margin-top:14px!important}.mt16{margin-top:16px}.mt18{margin-top:18px!important}.mt30{margin-top:30px}.section-final{border-bottom:0}.brand-image-compact{max-width:420px}