:root{--bg:#F4F3F1;--deep:#E6E4E0;--panel:#FFFFFF;--soft:#EDECEA;--text:#2A2A2A;--title:#161616;--muted:#5C5C5C;--quiet:#8A8A8A;--black:#161616;--ink:#2E2E2E;--silver:#C8C4BC;--ember:#B43A32;--frost:#FAF9F7;--border:rgba(22,22,22,.14);--shadow:0 12px 28px rgba(16,16,16,.08);--glow:0 6px 16px rgba(16,16,16,.18)}
*{box-sizing:border-box}html{scroll-behavior:smooth}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.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:var(--frost);padding:8px 12px;border-radius:6px}.skip-link:focus{top:8px}.top-strip{position:fixed;z-index:90;top:0;left:0;right:0;height:18px;background:var(--black);color:var(--frost);font-size:12px}.top-strip-inner,.brand-bar-inner,.pin-nav-inner,.site-main,.footer-inner{width:min(960px,calc(100% - 32px));margin:0 auto}.top-strip-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.text-button,.menu-trigger,.close-button{border:0;background:transparent;color:inherit;cursor:pointer}.text-button{font-size:12px;padding:0 2px}.brand-bar{position:fixed;z-index:89;top:18px;left:0;right:0;height:54px;background:var(--frost);border-bottom:1px solid var(--border)}.brand-bar-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand-home{display:flex;align-items:center;min-width:80px;min-height:44px}.brand-logo,.menu-logo,.footer-logo{height:24px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-weight:800;font-size:16px;color:var(--title)}.brand-actions{display:flex;align-items:center;gap:8px}.header-app-link,.menu-trigger{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;padding:0 14px}.header-app-link{background:linear-gradient(135deg,#3A3A3A 0%,#161616 55%,#0C0C0C 100%);color:var(--frost);box-shadow:var(--glow)}.menu-trigger{border:1px solid var(--border);background:#fff;color:var(--title)}.pin-nav{position:fixed;z-index:88;top:72px;left:0;right:0;height:44px;background:var(--soft);border-bottom:1px solid var(--border)}.pin-nav-inner{height:44px;display:flex;align-items:center;gap:10px}.pin-mark{width:12px;height:16px;border:1px solid var(--ink);border-radius:4px;transform:rotate(3deg)}.pin-link{min-height:32px;display:inline-flex;align-items:center;padding:4px 10px;border-radius:8px;border:1px solid transparent;font-size:13px}.pin-link.is-current{background:var(--black);color:var(--frost);border-color:var(--black);box-shadow:var(--glow)}.site-main{padding-top:140px;padding-bottom:72px;min-height:70vh}.breadcrumb{font-size:13px;color:var(--muted);display:flex;gap:8px;margin:0 0 18px}.breadcrumb a{text-decoration:underline;text-underline-offset:3px}h1,h2,h3{color:var(--title);margin:0 0 12px;line-height:1.3}h1{font-size:24px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted);max-width:760px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ember);margin-bottom:10px}.hero-copy{padding:24px 0 28px;border-bottom:1px solid var(--border)}.hero-copy .anchor-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}.anchor-token{width:12px;height:16px;border:1px solid var(--black);border-radius:4px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:42px;padding:0 16px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;transition:filter .18s ease,box-shadow .18s ease,transform .18s ease}.btn-primary{background:linear-gradient(135deg,#3A3A3A 0%,#161616 55%,#0C0C0C 100%);color:var(--frost);box-shadow:var(--glow)}.btn-secondary{background:#fff;color:var(--title);border:1px solid var(--border)}.btn:hover,.header-app-link:hover,.pin-link.is-current:hover,.mobile-nav a.is-current:hover{filter:brightness(1.08);box-shadow:0 0 0 3px rgba(196,164,74,.28),0 10px 24px rgba(16,16,16,.28)}.btn:active,.header-app-link:active,.pin-link.is-current:active,.mobile-nav a.is-current:active{filter:brightness(1.12);box-shadow:0 0 0 4px rgba(180,58,50,.35),0 0 22px rgba(200,196,188,.45)}a:focus-visible,button:focus-visible{outline:2px solid var(--silver);outline-offset:2px}.content-section{padding:30px 0;border-bottom:1px solid var(--border)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}.section-head p{max-width:580px;margin:0;color:var(--muted)}.image-slot{background:var(--frost);border:1px solid var(--border);border-radius:10px;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.wide{width:100%;height:168px}.image-slot.medium{width:100%;height:160px}.image-slot.pin{width:240px;height:176px;flex:0 0 240px}.image-slot.tall{width:240px;height:320px}.image-slot.banner{width:100%;height:200px}.split-pin{display:grid;grid-template-columns:240px 1fr;gap:24px;align-items:center}.double-ink{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.ink-panel{background:var(--black);color:var(--frost);border-radius:10px;padding:18px}.ink-panel h3,.ink-panel p{color:var(--frost)}.paper-stack{display:grid;grid-template-columns:1fr 1fr;gap:18px}.paper-card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:18px;box-shadow:var(--shadow)}.status-list{display:grid;gap:10px}.status-item{background:#fff;border-left:4px solid var(--black);padding:14px 16px;border-radius:0 10px 10px 0;box-shadow:var(--shadow);display:grid;grid-template-columns:110px 1fr;gap:16px}.status-badge{font-weight:800;color:var(--ember)}.topic-list{display:grid;gap:12px}.topic-row{padding:16px;border:1px solid var(--border);border-radius:10px;background:#fff;display:flex;justify-content:space-between;gap:16px}.topic-row span{color:var(--muted)}.note-long{max-width:780px}.note-long p{margin-bottom:16px}.editor-note{border-left:3px solid var(--ember);background:#fff;padding:14px 16px;margin:18px 0;border-radius:0 10px 10px 0}.wrap-app{display:grid;grid-template-columns:1fr 240px;gap:24px;align-items:start}.app-visual{position:relative}.app-icon-wrap{width:64px;height:64px;border-radius:14px;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;position:absolute;left:-18px;bottom:18px;box-shadow:var(--shadow)}.app-icon-wrap img{width:48px;height:48px;object-fit:contain}.faq-short{display:grid;gap:10px}.faq-short details,.faq-list details{background:#fff;border:1px solid var(--border);border-radius:10px;padding:14px 16px}.faq-short summary,.faq-list summary{cursor:pointer;font-weight:800;color:var(--title)}.faq-short p,.faq-list p{margin:10px 0 0}.legal-sections{display:grid;gap:16px}.legal-block{background:#fff;border:1px solid var(--border);border-radius:10px;padding:18px}.contact-paths{display:grid;grid-template-columns:1fr 1fr;gap:16px}.mini-list{margin:0;padding-left:20px}.mini-list li{margin:6px 0}.brand-reserve{display:grid;grid-template-columns:1fr 220px;gap:20px;align-items:center}.site-footer{background:#101010;color:#E6E4E0;border-top:1px solid var(--silver);padding:34px 0 76px}.footer-brand{display:flex;gap:12px;align-items:center;margin-bottom:20px}.footer-brand strong{display:block;color:var(--frost)}.footer-brand span{display:block;font-size:12px;color:var(--silver)}.footer-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.footer-groups h2{font-size:13px;color:var(--frost);margin-bottom:8px}.footer-groups a{display:block;font-size:13px;color:#E6E4E0;margin:5px 0}.footer-note,.footer-copy{font-size:13px;color:#C8C4BC;margin-top:20px}.page-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:120;opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.menu-sheet{position:fixed;z-index:130;left:0;right:0;bottom:0;background:var(--frost);border-top:1px solid var(--silver);padding:14px max(16px,calc((100vw - 960px)/2));max-height:200px;transform:translateY(102%);visibility:hidden;pointer-events:none;transition:transform .18s ease,visibility .18s ease;overflow:auto}.menu-sheet.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.menu-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.menu-brand{display:flex;align-items:center;gap:10px}.close-button{min-height:44px;padding:0 12px;border:1px solid var(--border);border-radius:8px;background:#fff}.menu-grid{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:16px}.menu-grid h2{font-size:14px;margin-bottom:6px}.menu-grid a{display:grid;grid-template-columns:max-content 1fr;gap:8px;align-items:baseline;font-size:12px;padding:4px 0}.menu-grid strong{font-size:13px}.menu-grid span{color:var(--muted)}.search-panel{position:fixed;z-index:131;top:72px;left:0;right:0;visibility:hidden;pointer-events:none}.search-panel.is-open{visibility:visible;pointer-events:auto}.search-card{width:min(720px,calc(100% - 32px));margin:0 auto;background:var(--frost);border:1px solid var(--border);border-top:0;border-radius:0 0 12px 12px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.search-head h2{margin:0}.search-card p{color:var(--muted)}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{min-height:40px;padding:0 14px;display:inline-flex;align-items:center;background:#fff;border:1px solid var(--border);border-radius:8px}.mobile-nav{display:none}
@media(max-width:760px){.top-strip-inner,.brand-bar-inner,.site-main,.footer-inner{width:calc(100% - 32px)}.pin-nav{display:none}.site-main{padding-top:92px;padding-bottom:78px}.brand-actions{gap:6px}.header-app-link,.menu-trigger{padding:0 10px;font-size:13px}.split-pin,.double-ink,.paper-stack,.wrap-app,.brand-reserve,.contact-paths{grid-template-columns:1fr}.image-slot.pin,.image-slot.tall{width:100%}.image-slot.pin{height:176px}.image-slot.tall{height:320px}.wrap-app .app-visual{max-width:240px;margin-left:auto}.status-item{grid-template-columns:1fr;gap:4px}.footer-groups{grid-template-columns:1fr 1fr}.menu-sheet{max-height:66vh;padding:14px 16px 70px}.menu-grid{grid-template-columns:1fr}.menu-grid a{grid-template-columns:110px 1fr}.search-panel{inset:0;background:var(--black);top:0;padding:18px 16px;overflow:auto}.search-card{width:100%;margin:0;background:var(--black);color:var(--frost);border:0;border-radius:0;box-shadow:none;padding:0}.search-head h2,.search-card p{color:var(--frost)}.search-links a,.search-card .close-button{background:var(--ink);color:var(--frost);border-color:rgba(255,255,255,.2)}.mobile-nav{position:fixed;z-index:110;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:var(--frost);border-top:1px solid var(--border)}.mobile-nav a{height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-nav a.is-current{background:var(--black);color:var(--frost);box-shadow:var(--glow)}.site-footer{padding-bottom:88px}.topic-row{flex-direction:column}.section-head{align-items:flex-start;flex-direction:column}.footer-groups{gap:12px}}
@media(max-width:420px){.footer-groups{grid-template-columns:1fr}.brand-fallback{font-size:15px}.header-app-link,.menu-trigger{font-size:12px;padding:0 8px}.top-strip{font-size:11px}}