:root{--bg:#0C0B08;--deep:#080706;--panel:#161410;--panel2:#1E1A14;--title:#F3E6C0;--text:#E4D6B0;--muted:#B89A58;--soft:#8A7040;--gold:#C9A227;--bright:#E0C056;--dark-gold:#8A6E18;--copper:#8A5A2A;--cream:#F7EFD4;--border:rgba(201,162,39,.22);--border-strong:rgba(201,162,39,.5);--shadow:0 12px 28px rgba(0,0,0,.45);--max:980px;--side:148px}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}a,button{outline:none}a:focus-visible,button:focus-visible{outline:2px solid var(--bright);outline-offset:2px}.site-notice{position:fixed;top:0;left:0;right:0;height:20px;background:#090806;color:var(--title);z-index:60;border-bottom:1px solid var(--border)}.notice-inner{max-width:calc(var(--max) + var(--side) + 28px);height:20px;margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;font-size:12px}.text-button,.menu-trigger,.close-button{border:0;background:transparent;color:var(--title);cursor:pointer;min-height:44px;padding:0 10px}.text-button{min-height:20px;padding:0}.site-header{position:fixed;top:20px;left:0;right:0;height:52px;background:var(--deep);border-bottom:1px solid var(--gold);z-index:59}.header-inner{height:52px;max-width:calc(var(--max) + var(--side) + 28px);margin:0 auto;padding:0 16px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-mark{display:flex;align-items:center;min-height:44px;width:max-content;font-weight:700;color:var(--title);font-size:16px}.brand-mark img{height:24px;width:auto;object-fit:contain}.brand-en{font-size:13px;color:var(--title);letter-spacing:.08em;white-space:nowrap}.header-actions{justify-self:end;display:flex;align-items:center;gap:6px}.header-app,.menu-trigger{min-height:44px;display:inline-flex;align-items:center;padding:0 10px;color:var(--title);font-size:13px}.header-app:hover,.menu-trigger:hover,.text-button:hover{color:var(--bright)}.double-nav{position:fixed;top:72px;left:0;right:0;height:64px;background:#0A0907;z-index:58;border-bottom:1px solid var(--border)}.double-nav-row{height:32px;max-width:var(--max);margin:0 auto;display:flex;align-items:center;justify-content:center;gap:32px}.double-nav a{height:32px;display:flex;align-items:center;font-size:13px;color:var(--text);border-bottom:2px solid transparent;white-space:nowrap}.double-nav a:hover,.double-nav a.is-current{color:var(--title);border-bottom-color:var(--bright)}.layout-shell{max-width:calc(var(--max) + var(--side) + 28px);margin:0 auto;padding:156px 16px 48px;display:grid;grid-template-columns:var(--side) minmax(0,var(--max));gap:28px}.side-nav{position:sticky;top:156px;align-self:start;border-right:1px solid var(--border);padding:4px 16px 12px 0;max-height:calc(100vh - 176px);overflow:auto}.side-nav section+section{margin-top:18px}.side-nav h2{font-size:12px;color:var(--soft);margin:0 0 5px;letter-spacing:.12em;font-weight:600}.side-nav a{display:block;min-height:34px;padding:4px 0;color:var(--muted);font-size:13px}.side-nav a:hover,.side-nav a.is-current{color:var(--bright)}.site-main{min-width:0}.page-head{padding:8px 0 26px;border-bottom:1px solid var(--border);margin-bottom:28px}.page-head .eyebrow,.section-kicker{font-size:12px;color:var(--muted);letter-spacing:.14em;margin:0 0 8px}.page-head h1,.hero-copy h1{font-size:24px;line-height:1.3;color:var(--title);margin:0 0 12px}.page-head p,.hero-copy p{margin:0;max-width:760px;color:var(--text)}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 12px}h3{font-size:16px;line-height:1.45;color:var(--title);margin:0 0 8px}p{margin:0 0 14px}.content-section{margin:0 0 34px}.content-section>.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:14px;border-bottom:1px solid var(--border);padding-bottom:10px}.section-head p{margin:0;color:var(--muted);font-size:13px}.hero-intro{padding:28px 0 36px}.hero-copy{max-width:760px}.hero-copy .lead{font-size:17px;color:var(--title)}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:7px;font-size:14px;font-weight:700;border:1px solid transparent}.btn-primary{background:linear-gradient(135deg,#E0C056 0%,#C9A227 55%,#8A6E18 100%);color:#1A1408}.btn-secondary{background:#0F0D0A;color:var(--title);border-color:var(--border-strong)}.btn:hover{transform:translateY(-1px)}.number-list{counter-reset:item;display:grid;gap:12px}.number-item{display:grid;grid-template-columns:84px 1fr;gap:18px;padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.number-tag{color:var(--bright);font-size:13px;font-weight:700}.number-item p:last-child{margin-bottom:0}.media-slot{background:#0A0907;border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:120px}.media-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-320{height:320px}.media-slot:empty:before{content:"";width:34px;height:1px;background:var(--border)}.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.note-card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}.note-card p:last-child{margin-bottom:0}.node-flow{display:flex;flex-wrap:wrap;gap:12px}.node{flex:1 1 200px;min-width:0;background:var(--panel2);border-left:3px solid var(--gold);padding:16px;border-radius:0 8px 8px 0}.node span{display:block;color:var(--bright);font-size:13px;margin-bottom:6px}.work-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.work-item{padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.work-item p:last-child{margin-bottom:0}.period-stack{display:grid;gap:12px}.period{padding:18px;border:1px solid var(--border);border-radius:8px;background:linear-gradient(180deg,#17140f 0%,#12100d 100%)}.status-board{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:start;padding:14px 16px;background:var(--panel);border-left:3px solid var(--gold);border-radius:0 8px 8px 0}.status-label{color:var(--bright);font-size:13px;font-weight:700}.status-row p{margin:0}.dark-band{background:#090806;border:1px solid var(--border-strong);box-shadow:var(--shadow);border-radius:10px;padding:26px}.app-band{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:28px;align-items:center}.app-visuals{display:grid;grid-template-columns:1fr 56px;gap:10px;align-items:center}.app-icon{height:56px}.check-list,.topic-list,.memo-list{display:grid;gap:10px}.check-item,.topic-item,.memo-item{padding:14px 16px;border:1px solid var(--border);background:var(--panel);border-radius:8px}.check-item strong,.topic-item strong,.memo-item strong{display:block;color:var(--title);margin-bottom:4px}.check-item p,.topic-item p,.memo-item p{margin:0}.method-steps{display:grid;gap:18px}.method-step{display:grid;grid-template-columns:48px 1fr;gap:16px}.method-no{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--gold);color:#1A1408;font-weight:800}.term-section{padding:18px 0;border-bottom:1px solid var(--border)}.term-section:last-child{border-bottom:0}.faq-list{display:grid;gap:12px}.faq-item{padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.faq-item h2{font-size:16px;margin-bottom:8px}.faq-item p{margin:0}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-card{padding:18px;background:var(--panel);border:1px solid var(--border);border-radius:8px}.brand-statement{display:grid;gap:18px}.statement-row{padding:18px;border-left:3px solid var(--copper);background:var(--panel)}.inline-links{display:flex;gap:10px;flex-wrap:wrap}.inline-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:7px;color:var(--title)}.inline-links a:hover{border-color:var(--border-strong);color:var(--bright)}.site-footer{background:var(--deep);border-top:1px solid var(--gold);padding:34px 16px 72px}.footer-inner{max-width:calc(var(--max) + var(--side) + 28px);margin:0 auto}.footer-brand{margin-bottom:24px}.footer-logo-line{display:flex;align-items:center;gap:10px;color:var(--title)}.footer-logo-line img{height:24px;width:auto;object-fit:contain}.footer-brand>span{display:block;color:var(--muted);font-size:12px;margin-top:4px;letter-spacing:.08em}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:20px 0}.footer-links h2{font-size:13px;color:var(--muted);margin:0 0 8px}.footer-links a{display:block;font-size:13px;color:var(--text);padding:3px 0}.footer-links a:hover{color:var(--bright)}.copyright-note,.copyright{font-size:13px;color:var(--text);margin:16px 0 0}.copyright{color:var(--soft)}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.72);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.sheet-menu{position:fixed;left:0;right:0;bottom:0;z-index:90;max-height:72vh;overflow:auto;background:#0A0907;border-top:1px solid var(--gold);box-shadow:0 -14px 34px rgba(0,0,0,.55);transform:translateY(102%);visibility:hidden;pointer-events:none;transition:.22s ease}.sheet-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-head{position:sticky;top:0;background:#0A0907;border-bottom:1px solid var(--border);padding:8px max(16px,calc((100% - var(--max))/2));display:flex;align-items:center;justify-content:space-between;z-index:1}.sheet-brand{display:flex;align-items:center;gap:10px}.sheet-brand img{height:24px;object-fit:contain}.sheet-grid{max-width:var(--max);margin:0 auto;padding:18px 16px 28px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.sheet-grid h2{font-size:13px;color:var(--muted);margin-bottom:10px}.sheet-grid a{display:block;padding:10px 0;border-bottom:1px solid var(--border)}.sheet-grid strong{display:block;color:var(--title);font-size:14px}.sheet-grid span{display:block;color:var(--soft);font-size:12px;line-height:1.5;margin-top:3px}.search-panel{position:fixed;top:72px;left:50%;z-index:91;width:min(720px,calc(100% - 32px));transform:translate(-50%,-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-panel.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:#0A0907;border:1px solid var(--border-strong);box-shadow:var(--shadow);padding:18px;border-radius:0 0 10px 10px}.search-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.search-head h2{margin:0}.search-card>p{color:var(--muted)}.search-presets{display:flex;flex-wrap:wrap;gap:8px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border-radius:7px;background:var(--panel2);border:1px solid var(--border);color:var(--title)}.mobile-bottom{display:none}.modal-open{overflow:hidden}.muted{color:var(--muted)}.small{font-size:13px}.no-margin{margin:0}
@media (max-width:900px){.brand-en{display:none}.header-inner{grid-template-columns:1fr auto}.double-nav{display:none}.layout-shell{display:block;padding:92px 16px 80px}.side-nav{display:none}.site-main{max-width:var(--max);margin:0 auto}.footer-inner{max-width:var(--max)}.sheet-grid{grid-template-columns:1fr 1fr}.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:#090806;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text)}.mobile-bottom a.is-current{background:var(--gold);color:#1A1408;font-weight:700}.site-footer{padding-bottom:calc(68px + env(safe-area-inset-bottom))}.search-panel{top:0;left:0;right:0;bottom:0;width:100%;transform:none;background:#090806;border:0}.search-panel.is-open{transform:none}.search-card{height:100%;border:0;border-radius:0;padding:24px 16px}.search-presets{display:grid;grid-template-columns:1fr 1fr}.app-band{grid-template-columns:1fr}.app-visuals{grid-template-columns:minmax(0,1fr) 56px;max-width:360px}.page-head{padding-top:4px}}
@media (max-width:640px){.notice-inner,.header-inner{padding-left:16px;padding-right:10px}.header-actions{gap:0}.header-app,.menu-trigger{padding:0 8px}.header-app{font-size:12px}.brand-mark{font-size:15px;max-width:145px;overflow:hidden}.number-item{grid-template-columns:1fr;gap:8px}.note-columns,.work-grid,.contact-grid{grid-template-columns:1fr}.method-step{grid-template-columns:42px 1fr}.footer-links{grid-template-columns:1fr 1fr}.sheet-grid{grid-template-columns:1fr}.sheet-menu{max-height:72vh}.dark-band{padding:20px}.slot-320{height:280px}.content-section{margin-bottom:28px}.page-head h1,.hero-copy h1{font-size:24px}.site-main{overflow-wrap:anywhere}}
/* Accessible hit areas for compact fixed navigation rows. */
.text-button,.double-nav a{position:relative}
.text-button::after{content:"";position:absolute;inset:-12px -10px}
.double-nav a::after{content:"";position:absolute;inset:-6px -8px}
.side-nav a,.footer-links a{min-height:44px;display:flex;align-items:center}