:root{
  --bg:#0C0B08;--deep:#080706;--panel:#161410;--panel2:#1E1A14;--title:#F3E6C0;--text:#E4D6B0;
  --muted:#B89A58;--sub:#8A7040;--gold:#C9A227;--bright:#E0C056;--deepgold:#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);
}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden;padding-top:136px}a{color:inherit;text-decoration:none}button,input{font:inherit}.no-scroll{overflow:hidden}.site-notice{position:fixed;z-index:80;left:0;right:0;top:0;height:20px;background:var(--deep);display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border);font-size:12px;color:var(--muted)}.notice-brand{min-height:20px;display:flex;align-items:center}.notice-search{height:20px;border:0;background:transparent;color:var(--cream);padding:0 8px;cursor:pointer}.site-header{position:fixed;z-index:79;left:0;right:0;top:20px;height:52px;background:var(--panel);border-bottom:1px solid var(--gold);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 18px}.brand-home{display:inline-flex;align-items:center;justify-self:start;min-height:44px}.brand-logo,.footer-logo{height:24px;max-width:170px;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:700;color:var(--title)}.brand-en{font-size:13px;color:var(--muted);letter-spacing:.12em}.header-actions{justify-self:end;display:flex;align-items:center;gap:6px}.header-app,.menu-open{height:44px;min-width:62px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;background:transparent;color:var(--cream);padding:0 10px;cursor:pointer}.menu-open{border-color:var(--border);border-radius:7px}.double-nav{position:fixed;z-index:78;left:0;right:0;top:72px;height:64px;background:var(--deep);border-bottom:1px solid var(--border);display:flex;flex-direction:column;justify-content:center}.double-nav-row{height:32px;display:flex;align-items:center;justify-content:center;gap:32px}.double-nav a{height:32px;display:inline-flex;align-items:center;font-size:13px;color:var(--text);border-bottom:2px solid transparent}.double-nav a.is-active{color:var(--bright);border-bottom-color:var(--bright)}.page-shell{max-width:1280px;margin:0 auto;position:relative}.side-nav{position:fixed;z-index:20;top:156px;left:max(14px,calc(50% - 620px));width:148px;padding:10px;background:var(--deep);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow)}.side-group{display:flex;flex-direction:column;margin-bottom:12px}.side-group:last-child{margin-bottom:0}.side-group strong{font-size:12px;color:var(--sub);padding:4px 6px}.side-group a{min-height:36px;display:flex;align-items:center;padding:0 8px;border-left:2px solid transparent}.side-group a:hover,.side-group a:focus-visible{color:var(--cream);background:var(--panel)}.side-group a.is-active{color:var(--bright);border-left-color:var(--bright)}.site-main{width:min(980px,calc(100% - 210px));margin-left:auto;margin-right:30px;padding:30px 0 54px}.page-head{margin-bottom:24px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}.page-head h1,.hero-copy h1{margin:6px 0 10px;color:var(--title);font-size:24px;line-height:1.3}.page-head p,.hero-copy p{margin:0;color:var(--text)}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 12px}h3{font-size:16px;color:var(--cream);margin:0 0 8px}p{margin:0 0 12px}.section{margin:0 0 34px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}.section-head p{margin:0;color:var(--sub);font-size:13px}.hero-copy{padding:18px 0 28px;border-bottom:1px solid var(--border)}.hero-copy p{max-width:760px}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn-primary,.btn-secondary{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:7px;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:var(--deep);border:1px solid var(--bright);color:var(--cream)}.btn-primary:hover,.btn-secondary:hover{transform:translateY(-1px)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:2px}.image-slot{width:100%;background:var(--deep);border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.slot-176{height:176px}.slot-160{height:160px}.slot-200{height:200px}.slot-app{height:min(320px,52vw)}.slot-icon{width:64px;height:64px}.numbered-list{counter-reset:item;display:grid;gap:14px}.numbered-entry{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:9px}.numbered-entry .number-label{font-weight:700;color:var(--bright);font-size:14px}.numbered-entry p:last-child{margin-bottom:0}.home-numbered .numbered-entry:first-child{grid-template-columns:110px 260px 1fr}.two-notes{display:grid;grid-template-columns:1fr 1fr;gap:16px}.note-card{padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.note-card .image-slot{margin-bottom:14px}.node-flow{display:flex;flex-wrap:wrap;gap:12px}.node{flex:1 1 200px;min-width:0;padding:16px;background:var(--panel2);border-top:2px solid var(--gold);border-radius:8px}.node strong{display:block;color:var(--bright);margin-bottom:7px}.work-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.work-card{padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.work-card p:last-child{margin-bottom:0}.period-list{display:grid;gap:14px}.period-block{padding:17px;border-left:3px solid var(--deepgold);background:var(--panel)}.period-block strong{color:var(--bright)}.status-list{display:grid;gap:12px}.status-row{display:grid;grid-template-columns:100px 1fr;gap:16px;align-items:start;padding:14px 16px;background:var(--panel);border:1px solid var(--border)}.status-pill{display:inline-flex;justify-content:center;align-items:center;min-height:32px;padding:4px 10px;border:1px solid var(--border-strong);color:var(--cream);border-radius:99px;font-size:13px}.memo-list{display:grid;gap:10px}.memo-item{padding:15px 16px;background:var(--panel);border-left:3px solid var(--copper)}.method-list,.terms{display:grid;gap:14px}.method-step,.term-block{padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.topic-list{display:grid;gap:13px}.topic-item{padding:17px;background:linear-gradient(90deg,var(--panel2),var(--panel));border:1px solid var(--border);border-radius:8px}.dark-band{margin-left:calc((980px - 100vw)/2);margin-right:calc((980px - 100vw)/2);padding:28px max(18px,calc((100vw - 980px)/2));background:var(--deep);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.app-band{display:grid;grid-template-columns:1.6fr .7fr;gap:24px;align-items:center}.app-media{display:flex;gap:12px;align-items:flex-end;justify-content:flex-end}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini details,.faq-list details{padding:14px 16px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.faq-mini summary,.faq-list summary{cursor:pointer;color:var(--title);font-weight:700}.faq-mini p,.faq-list p{margin-top:10px}.brand-section{padding:18px;background:var(--panel2);border:1px solid var(--border);border-radius:8px}.single-notes{display:grid;gap:14px}.single-note{padding:18px;background:var(--panel);border-left:3px solid var(--gold)}.install-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-card{padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.about-banner{margin-bottom:22px}.site-footer{background:var(--deep);border-top:1px solid var(--gold);padding:30px max(18px,calc((100vw - 980px)/2)) 36px;font-size:13px;color:var(--text)}.footer-brand{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:20px}.footer-brand span{font-weight:700;color:var(--title)}.footer-brand em{font-style:normal;color:var(--muted);letter-spacing:.08em}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-grid div{display:flex;flex-direction:column;gap:6px}.footer-grid strong{color:var(--bright)}.footer-grid a:hover{color:var(--cream)}.footer-note{margin-top:22px;color:var(--muted)}.footer-copy{color:var(--sub);margin-bottom:0}.overlay{position:fixed;z-index:90;inset:0;background:rgba(0,0,0,.72);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.full-menu{position:fixed;z-index:95;left:0;right:0;bottom:0;max-height:72vh;background:var(--deep);border-top:1px solid var(--gold);box-shadow:0 -18px 40px rgba(0,0,0,.55);transform:translateY(104%);visibility:hidden;pointer-events:none;transition:.24s ease;overflow:auto;padding-bottom:calc(14px + env(safe-area-inset-bottom))}.full-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-head{position:sticky;top:0;background:var(--deep);z-index:2;display:flex;justify-content:space-between;align-items:center;padding:12px 18px;border-bottom:1px solid var(--border)}.sheet-brand{display:flex;align-items:center;gap:10px}.sheet-brand img{height:24px;max-width:160px;object-fit:contain}.sheet-head button,.search-head button{min-height:44px;padding:0 14px;border:1px solid var(--border);background:var(--panel);color:var(--cream);border-radius:7px}.menu-groups{max-width:980px;margin:0 auto;padding:16px 18px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.menu-group h2{font-size:15px;color:var(--bright);margin-bottom:8px}.menu-group a{display:block;padding:9px 0;border-bottom:1px solid var(--border)}.menu-group a strong{display:block;color:var(--title);font-size:14px}.menu-group a span{display:block;color:var(--sub);font-size:12px;line-height:1.55}.search-layer{position:fixed;z-index:96;top:72px;left:50%;width:min(720px,calc(100% - 32px));transform:translate(-50%,-14px);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(--deep);border:1px solid var(--gold);box-shadow:var(--shadow);padding:16px;border-radius:0 0 10px 10px}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.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(--border-strong);background:var(--panel);color:var(--cream);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;border:1px solid var(--border);border-radius:7px;background:var(--panel);color:var(--title)}.mobile-bottom{display:none}
@media(max-width:1050px){.site-main{width:min(980px,calc(100% - 190px));margin-right:18px}.side-nav{left:14px}.dark-band{margin-left:0;margin-right:0;padding:26px 18px;border-radius:8px}}
@media(max-width:760px){body{padding-top:72px;padding-bottom:calc(64px + env(safe-area-inset-bottom))}.site-notice{padding:0 10px}.site-header{grid-template-columns:1fr auto;padding:0 10px}.brand-en{display:none}.header-actions{gap:2px}.header-app,.menu-open{min-width:58px;padding:0 8px}.brand-logo{max-width:130px}.double-nav,.side-nav{display:none}.page-shell{width:100%}.site-main{width:auto;margin:0;padding:22px 16px 44px}.home-numbered .numbered-entry,.numbered-entry{grid-template-columns:1fr}.numbered-entry{gap:8px}.two-notes,.work-grid,.faq-mini,.install-grid,.contact-cards{grid-template-columns:1fr}.dark-band{margin-left:-16px;margin-right:-16px;border-radius:0;padding:24px 16px}.app-band{grid-template-columns:1fr}.app-media{justify-content:flex-start;flex-wrap:wrap}.slot-app{height:min(320px,74vw)}.footer-grid{grid-template-columns:1fr 1fr}.site-footer{padding:28px 16px calc(86px + env(safe-area-inset-bottom))}.menu-groups{grid-template-columns:1fr 1fr;padding:14px 16px 24px}.search-layer{inset:0;width:100%;transform:none;opacity:0;background:var(--deep)}.search-layer.is-open{transform:none;opacity:1}.search-card{min-height:100%;border:0;border-radius:0;padding:22px 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:var(--deep);display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;color:var(--text);font-size:13px}.mobile-bottom a.is-active{background:var(--gold);color:#1A1408;font-weight:700}.page-head h1,.hero-copy h1{font-size:24px}.section{margin-bottom:28px}.slot-176{height:176px}.slot-160{height:160px}.slot-200{height:200px}}
@media(max-width:440px){.footer-grid,.menu-groups{grid-template-columns:1fr}.brand-home{max-width:46%}.header-app{font-size:13px}.menu-open{font-size:13px}.status-row{grid-template-columns:1fr}.double-nav-row{gap:14px}}