: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;
  --border:rgba(201,162,39,.22);--border-strong:rgba(201,162,39,.50);--shadow:0 12px 28px rgba(0,0,0,.45);
  --top1:20px;--top2:52px;--nav:64px;--max:980px;--rail:148px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg);overflow-x:hidden}
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}
body.no-scroll{overflow:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit}
img{display:block;max-width:100%}
.skip-link{position:fixed;left:12px;top:-60px;z-index:1200;background:var(--cream);color:#1A1408;padding:8px 12px;border-radius:6px}.skip-link:focus{top:8px}
.notice-bar{position:fixed;z-index:1000;top:0;left:0;right:0;height:20px;background:#090805;color:var(--bright);font-size:12px;border-bottom:1px solid rgba(201,162,39,.12)}
.top-inner{max-width:calc(var(--max) + var(--rail) + 36px);height:100%;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between}
.notice-brand{line-height:20px}.text-button{border:0;background:transparent;color:var(--bright);height:20px;padding:0 4px;cursor:pointer}
.site-header{position:fixed;z-index:990;top:20px;left:0;right:0;height:52px;background:#0D0B08;border-bottom:1px solid var(--gold)}
.header-inner{max-width:calc(var(--max) + var(--rail) + 36px);height:100%;margin:0 auto;padding:0 18px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px}
.brand-mark{display:inline-flex;align-items:center;min-height:44px;min-width:100px}.brand-logo{height:24px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;color:var(--title);font-weight:700;white-space:nowrap}
.brand-en{font-size:13px;color:var(--muted);letter-spacing:.12em;white-space:nowrap}.header-actions{display:flex;justify-content:flex-end;align-items:center;gap:8px}.header-app,.menu-open{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;white-space:nowrap;border-radius:7px}.header-app{color:var(--bright)}.menu-open{border:1px solid var(--border-strong);background:var(--panel);color:var(--cream);cursor:pointer}
.double-nav{position:fixed;z-index:980;top:72px;left:0;right:0;height:64px;background:#0A0907;border-bottom:1px solid var(--border)}
.nav-row{height:32px;max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:center;gap:34px}.nav-row a{height:32px;display:flex;align-items:center;font-size:13px;color:var(--text);border-bottom:2px solid transparent;white-space:nowrap}.nav-row a.is-active{color:var(--bright);border-bottom-color:var(--bright)}
.side-rail{position:fixed;z-index:30;top:156px;left:max(16px,calc(50vw - 564px));width:148px;padding:12px 10px;background:rgba(12,11,8,.94);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow)}
.rail-group+ .rail-group{margin-top:14px;padding-top:12px;border-top:1px solid var(--border)}.rail-group>span{display:block;color:var(--soft);font-size:12px;margin:0 0 6px}.rail-group a{display:block;padding:5px 4px;color:var(--text);font-size:13px;border-radius:4px}.rail-group a:hover,.rail-group a:focus-visible{color:var(--cream);background:var(--panel2)}.rail-group a.is-active{color:var(--bright);font-weight:700}
.site-main{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:172px 0 56px;min-height:70vh}
.page-index .site-main{padding-top:168px}
h1,h2,h3{color:var(--title);margin-top:0}h1{font-size:24px;line-height:1.3;margin-bottom:16px}h2{font-size:20px;line-height:1.4;margin-bottom:10px}h3{font-size:16px;line-height:1.45;margin-bottom:7px}p{margin:0 0 14px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--bright);margin-bottom:8px}.lead{max-width:820px}.page-hero{padding:34px 0 30px;border-bottom:1px solid var(--border);margin-bottom:26px}.page-hero.slim{padding-top:24px}.page-hero>p:last-child{max-width:820px;color:var(--text)}.hero-intro{padding:42px 0 36px;border-bottom:1px solid var(--border)}.hero-intro h1{font-size:28px}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:8px;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{background:#100E0A;border:1px solid var(--bright);color:var(--bright)}.btn:hover{filter:brightness(1.06)}.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--bright);outline-offset:3px}
.home-section{padding:34px 0;border-bottom:1px solid var(--border)}.section-head{margin-bottom:18px}.section-head>p{font-size:12px;color:var(--muted);margin-bottom:4px}.section-head h2{margin-bottom:0}.media-slot{width:100%;min-height:90px;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-wide{height:220px}.h176{height:176px}.h160{height:160px}.media-note{height:160px}.media-app{height:320px;max-width:250px;margin-left:auto}.media-icon{width:70px;height:70px;margin:12px 0 0 auto}.media-banner{height:200px}.brand-cover{height:240px;margin-top:18px}
.numbered-item{display:grid;grid-template-columns:92px 1fr;gap:22px;padding:24px 0;border-top:1px solid var(--border)}.numbered-item>span{color:var(--bright);font-weight:700}.numbered-item p{max-width:780px}.page-list .numbered-item:first-child{border-top:0}.source-note{color:var(--muted);font-size:13px}.text-link{display:inline-flex;min-height:44px;align-items:center;color:var(--bright);font-weight:700}.text-link::after{content:' →';margin-left:5px}
.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:22px}.note-columns article{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}.flow-nodes .node-wrap{display:flex;flex-wrap:wrap;gap:12px}.node-wrap>div{flex:1 1 210px;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px}.node-wrap b{color:var(--bright);display:block;margin-bottom:6px}.works-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.works-grid article{padding:18px;border-left:2px solid var(--darkgold);background:var(--panel)}.week-band{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:18px 0;border-top:1px solid var(--border)}.week-band h3{color:var(--bright)}.status-row{display:grid;grid-template-columns:96px 1fr;gap:18px;padding:15px 0;border-top:1px solid var(--border)}.status-row b{color:var(--bright)}
.app-band,.app-page-band{margin:34px calc(50% - 50vw);padding:34px max(16px,calc(50vw - 490px));background:var(--deep);border-top:1px solid var(--border-strong);border-bottom:1px solid var(--border-strong);display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:38px;align-items:center}.app-page-band{margin-top:0}.app-copy p{max-width:650px}.app-visual{align-self:center}.guide-lines p{padding:12px 0;border-top:1px solid var(--border)}.faq-mini details,.long-faq details{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:0 16px;margin-bottom:10px}.faq-mini summary,.long-faq summary{cursor:pointer;color:var(--title);font-weight:700;min-height:48px;display:flex;align-items:center}.faq-mini details p,.long-faq details p{padding:0 0 14px;margin:0}.brand-about{border-bottom:0}
.split-intro{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:end}.observation-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.obs-card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:20px}.obs-feature{grid-row:span 2}.single-notes article{padding:22px 0;border-top:1px solid var(--border)}.single-notes article:first-child{border-top:0}.timeline-wrap{position:relative}.timeline-wrap:before{content:'';position:absolute;left:57px;top:0;bottom:0;width:1px;background:var(--border-strong)}.timeline-node{display:grid;grid-template-columns:115px 1fr;gap:26px;padding:22px 0}.node-label{position:relative;z-index:1;align-self:start;background:var(--bright);color:#1A1408;font-weight:800;text-align:center;padding:8px 10px;border-radius:999px}.timeline-node>div:last-child{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:20px}
.week-stack{display:grid;gap:16px}.week-panel{padding:22px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.week-panel>span{color:var(--bright);font-weight:800}.week-panel.current{border-color:var(--border-strong)}.closing-card{margin:30px 0;padding:22px;background:var(--panel2);border:1px solid var(--border);border-radius:8px}.status-track{display:grid;gap:16px}.status-track article{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:20px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.status-key{height:40px;display:flex;align-items:center;justify-content:center;border-radius:6px;font-weight:800}.status-key.done{background:var(--bright);color:#1A1408}.status-key.work{background:#211D12;color:var(--cream);border:1px solid var(--bright)}.status-key.wait{background:#130F0B;color:var(--muted);border:1px solid var(--copper)}.status-explain{margin-top:30px}.status-explain h2{margin-top:24px}
.memo-list{display:grid;gap:0}.memo-list article{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--border)}.memo-list article>span{font-size:22px;color:var(--darkgold);font-weight:800}.method-steps{display:grid;gap:18px}.method-steps article{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:20px;background:var(--panel);border-left:3px solid var(--darkgold)}.step-no{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--bright);color:#1A1408;font-weight:800}.topic-list{display:grid;gap:14px}.topic-list article{padding:22px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.topic-index{display:inline-block;color:var(--bright);font-size:13px;margin-bottom:8px}.topic-list a,.work-columns a,.help-paths a{display:inline-flex;align-items:center;min-height:44px;color:var(--bright);font-weight:700}.work-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.work-columns article{padding:20px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.work-columns article>span{color:var(--muted);font-size:12px}.feature-strips{display:grid;grid-template-columns:1fr 1fr;gap:16px}.feature-strips article{padding:22px;background:var(--panel);border-top:2px solid var(--darkgold)}.install-checks{display:grid;gap:16px}.install-checks article{padding:22px;background:linear-gradient(90deg,var(--panel),#100E0A);border:1px solid var(--border);border-radius:8px}.install-checks article>span{color:var(--bright);font-size:13px}.legal-sections article{padding:24px 0;border-bottom:1px solid var(--border)}.legal-sections article:first-child{padding-top:0}.help-paths{display:grid;grid-template-columns:1fr 1fr;gap:16px}.help-paths article{padding:20px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.contact-types{display:grid;gap:16px}.contact-types article{padding:22px;border-left:3px solid var(--copper);background:var(--panel)}.about-head{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;padding:20px 0 30px;border-bottom:1px solid var(--border)}.about-head .media-banner{margin:0}.about-story{margin-top:24px}.about-story article{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:22px 0;border-top:1px solid var(--border)}.about-story article:first-child{border-top:0}
.site-footer{background:var(--deep);border-top:1px solid var(--darkgold);color:var(--text);font-size:13px}.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:34px 0 76px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-logo{height:24px;width:auto;object-fit:contain}.footer-brand strong{display:block;color:var(--title)}.footer-brand span{display:block;color:var(--muted);font-size:12px;letter-spacing:.08em}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.footer-links h3{font-size:13px;color:var(--bright);margin-bottom:8px}.footer-links a{display:block;padding:4px 0;color:var(--text)}.footer-note{max-width:820px;margin-top:20px;color:var(--muted)}.copyright{color:var(--soft);margin-bottom:0}
.overlay{position:fixed;z-index:1040;inset:0;background:rgba(0,0,0,.68);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.all-menu{position:fixed;z-index:1060;left:0;right:0;bottom:0;max-height:72vh;overflow:auto;background:#0B0907;border-top:1px solid var(--bright);box-shadow:0 -16px 40px rgba(0,0,0,.55);transform:translateY(105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s}.all-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.menu-grab{width:44px;height:4px;background:var(--soft);border-radius:99px;margin:10px auto}.menu-head{position:sticky;top:0;z-index:2;background:#0B0907;display:flex;align-items:center;justify-content:space-between;padding:10px max(16px,calc(50vw - 490px));border-bottom:1px solid var(--border)}.menu-brand{display:flex;align-items:center;gap:10px}.menu-brand img{height:24px;object-fit:contain}.layer-close{min-height:44px;padding:0 14px;border:1px solid var(--border-strong);border-radius:7px;background:var(--panel);color:var(--cream);cursor:pointer}.menu-grid{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:18px 0 28px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.menu-grid h3{font-size:13px;color:var(--bright);margin-bottom:8px}.menu-grid a{display:block;padding:9px 0;border-bottom:1px solid rgba(201,162,39,.12)}.menu-grid b{display:block;color:var(--title);font-size:14px}.menu-grid span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:2px}
.search-layer{position:fixed;z-index:1055;top:72px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.18s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:#0B0907;border:1px solid var(--border-strong);border-top:0;border-radius:0 0 10px 10px;padding:18px;box-shadow:var(--shadow)}.layer-head{display:flex;align-items:center;justify-content:space-between}.layer-head strong{color:var(--title)}.search-card>p{color:var(--muted);margin-top:10px}.search-presets{display:flex;flex-wrap:wrap;gap:10px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:7px;background:var(--panel);color:var(--bright)}
.mobile-bottom{display:none}
@media (max-width:1180px){.side-rail{display:none}.site-main{width:min(var(--max),calc(100% - 36px))}}
@media (max-width:760px){
  :root{--nav:0px}.top-inner,.header-inner{padding-left:16px;padding-right:16px}.header-inner{grid-template-columns:minmax(0,1fr) auto}.brand-en{display:none}.brand-mark{min-width:0}.header-actions{gap:4px}.header-app,.menu-open{padding:0 9px;font-size:13px}.double-nav{display:none}.site-main,.page-index .site-main{width:calc(100% - 32px);padding-top:96px;padding-bottom:72px}.hero-intro{padding-top:28px}.hero-intro h1{font-size:24px}.page-hero{padding-top:20px}.numbered-item{grid-template-columns:1fr;gap:8px}.numbered-item>span{font-size:13px}.note-columns,.works-grid,.observation-grid,.work-columns,.feature-strips,.help-paths,.about-head{grid-template-columns:1fr}.obs-feature{grid-row:auto}.split-intro{grid-template-columns:1fr;gap:8px}.week-band{grid-template-columns:1fr;gap:4px}.app-band,.app-page-band{grid-template-columns:1fr;margin-left:-16px;margin-right:-16px;padding:28px 16px;gap:18px}.media-app{margin-left:0;max-width:100%;height:300px}.media-icon{margin-left:0}.timeline-wrap:before{left:20px}.timeline-node{grid-template-columns:1fr;gap:10px;padding-left:0}.node-label{width:max-content;padding:7px 14px}.status-track article{grid-template-columns:1fr}.status-key{width:110px}.memo-list article{grid-template-columns:42px 1fr}.method-steps article{grid-template-columns:1fr}.about-story article{grid-template-columns:1fr;gap:4px}.footer-links{grid-template-columns:1fr 1fr}.footer-inner{padding-bottom:92px}.menu-grid{grid-template-columns:1fr 1fr}.search-layer{top:0;bottom:0;background:#090805}.search-card{width:100%;height:100%;border:0;border-radius:0;margin:0;padding:calc(20px + env(safe-area-inset-top)) 16px 16px;background:#090805;overflow:auto}.search-presets{display:grid;grid-template-columns:1fr}.mobile-bottom{position:fixed;z-index:900;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#090805;border-top:1px solid var(--border-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text)}.mobile-bottom a.is-active{background:var(--gold);color:#1A1408;font-weight:800}.all-menu{max-height:72vh}.menu-head{padding-left:16px;padding-right:16px}.media-banner{height:200px}
}
@media (max-width:420px){.footer-links,.menu-grid{grid-template-columns:1fr}.header-app{font-size:12px}.media-wide{height:180px}.h176{height:176px}.media-banner{height:200px}}