:root{--bg:#F4F3F1;--deep:#E6E4E0;--card:#fff;--soft:#EDECEA;--text:#2A2A2A;--title:#161616;--muted:#5C5C5C;--aux:#8A8A8A;--ink:#161616;--graphite:#2E2E2E;--silver:#C8C4BC;--ember:#B43A32;--frost:#FAF9F7;--border:rgba(22,22,22,.14);--shadow:0 12px 28px rgba(16,16,16,.08);--max:960px}
*{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",sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block;object-fit:contain;object-position:center}.site-head{position:fixed;left:0;right:0;top:0;z-index:50}.bar-inner{max-width:var(--max);margin:auto;padding:0 16px;height:100%;display:flex;align-items:center;justify-content:space-between}.ink-strip{height:18px;background:var(--ink);color:var(--frost);font-size:12px}.text-action{border:0;background:transparent;color:var(--frost);cursor:pointer;padding:0 4px}.brand-row{height:54px;background:var(--frost);border-bottom:1px solid var(--border)}.brand-link{min-width:44px;min-height:44px;display:flex;align-items:center}.brand-logo,.sheet-logo,.footer-logo{height:24px;width:auto}.brand-fallback{font-size:16px;font-weight:800;color:var(--title)}.head-actions{display:flex;align-items:center;gap:8px}.head-app,.sheet-btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 14px;border:1px solid var(--border);background:#fff;color:var(--title);font-size:14px;cursor:pointer}.sheet-btn{background:var(--ink);color:var(--frost)}.pin-nav{height:44px;background:var(--soft);border-bottom:1px solid var(--border)}.pin-inner{justify-content:flex-start;gap:10px}.pin-mark{width:12px;height:16px;border-radius:3px;background:var(--ink);box-shadow:0 0 0 2px rgba(180,58,50,.12)}.pin-link{min-height:34px;display:inline-flex;align-items:center;padding:0 12px;border:1px solid var(--border);border-radius:9px;background:#fff;font-size:13px;transition:180ms}.pin-link.is-active,.mobile-nav a.is-active,.primary-btn{background:linear-gradient(135deg,#3A3A3A 0%,#161616 55%,#0C0C0C 100%);color:var(--frost);box-shadow:0 6px 16px rgba(16,16,16,.18)}.pin-link:hover,.mobile-nav a:hover,.primary-btn:hover{filter:brightness(1.08);box-shadow:0 0 0 3px rgba(196,164,74,.28),0 10px 24px rgba(16,16,16,.28)}.pin-link:active,.mobile-nav a:active,.primary-btn: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}.site-main{padding-top:132px;padding-bottom:28px}.content{max-width:var(--max);margin:auto;padding:24px 16px}.breadcrumb{font-size:13px;color:var(--muted);margin:0 0 18px}.breadcrumb a{text-decoration:underline;text-underline-offset:3px}h1{font-size:24px;line-height:1.3;margin:0 0 12px;color:var(--title)}h2{font-size:20px;line-height:1.4;margin:0 0 10px;color:var(--title)}h3{font-size:16px;margin:0 0 8px;color:var(--title)}p,li{font-size:15px;line-height:1.7}.lead{font-size:17px;line-height:1.7;color:var(--title);margin:0 0 10px}.muted{color:var(--muted)}.section{margin:28px 0}.panel{background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);padding:20px}.soft-panel{background:var(--soft);border:1px solid var(--border);border-radius:10px;padding:18px}.primary-btn,.secondary-btn{min-height:42px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:14px;transition:180ms}.secondary-btn{background:#fff;border:1px solid var(--border);color:var(--title)}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.img-slot{background:var(--frost);border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.img-slot.wide{width:100%;height:168px}.img-slot.medium{width:100%;height:160px}.img-slot.pin{width:240px;height:176px}.img-slot.app{width:240px;height:320px}.img-slot.banner{width:100%;height:200px}.img-slot img{width:100%;height:100%;object-fit:contain}.home-intro{padding:28px 0 8px}.single-index{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:12px}.single-index::before{content:"";width:12px;height:16px;border-radius:3px;background:var(--ink)}.pin-cut{display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:center}.double-ink{display:grid;grid-template-columns:1fr 1fr;gap:16px}.double-ink article{background:var(--ink);color:var(--frost);padding:18px;border-radius:10px}.double-ink article h3{color:var(--frost)}.double-ink article p{color:#E6E4E0}.double-ink .img-slot{background:#fff;margin-bottom:12px}.pin-pages{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}.pin-pages article{position:relative;padding:18px 18px 18px 28px;background:#fff;border:1px solid var(--border);border-radius:10px}.pin-pages article::before{content:"";position:absolute;left:12px;top:18px;width:7px;height:24px;border-radius:3px;background:var(--ember)}.status-row{display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:start;padding:14px 0;border-top:1px solid var(--border)}.status-row:first-child{border-top:0}.status-badge{display:inline-flex;align-items:center;justify-content:center;min-height:32px;border-radius:999px;background:var(--ink);color:var(--frost);font-size:13px;padding:0 12px}.notes-long article{padding:18px 0;border-top:1px solid var(--border)}.notes-long article:first-child{border-top:0}.topic-directory{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.topic-directory a{display:block;background:#fff;border:1px solid var(--border);border-radius:10px;padding:18px}.scene-flow{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px;align-items:start}.inquiry-stack{display:grid;gap:12px}.inquiry-stack section{background:#fff;border-left:4px solid var(--ember);padding:16px 18px;border-radius:8px;box-shadow:var(--shadow)}.app-wrap{display:grid;grid-template-columns:1fr 260px;gap:24px;align-items:start}.app-visuals{display:grid;justify-items:end;gap:12px}.icon-box{width:64px;height:64px;background:#fff;border:1px solid var(--border);border-radius:14px;display:flex;align-items:center;justify-content:center}.icon-box img{width:48px;height:48px}.terms section{padding:18px 0;border-top:1px solid var(--border)}.terms section:first-child{border-top:0}.faq-list details{background:#fff;border:1px solid var(--border);border-radius:10px;margin:0 0 10px;padding:0 16px}.faq-list summary{cursor:pointer;font-weight:700;padding:16px 0;min-height:52px}.faq-list p{margin:0 0 16px}.site-footer{background:#101010;color:#E6E4E0;border-top:1px solid rgba(200,196,188,.35);padding:28px 0 70px}.footer-inner{max-width:var(--max);margin:auto;padding:0 16px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:20px}.footer-brand div{display:flex;flex-direction:column}.footer-brand span{font-size:12px;color:#C8C4BC}.footer-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.footer-groups h2{font-size:14px;color:#fff}.footer-groups a{display:block;font-size:13px;color:#D9D6D0;padding:5px 0}.footer-note,.copyright{font-size:13px;color:#C8C4BC}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.48);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:180ms}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.nav-sheet{position:fixed;left:0;right:0;bottom:0;background:var(--frost);z-index:90;max-height:200px;transform:translateY(110%);visibility:hidden;pointer-events:none;transition:180ms;border-top:1px solid var(--border);box-shadow:0 -16px 40px rgba(0,0,0,.18);padding:14px 16px}.nav-sheet.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-top,.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:var(--max);margin:auto}.sheet-brand{display:flex;align-items:center;gap:10px}.close-btn{min-height:40px;padding:0 12px;border-radius:9px;border:1px solid var(--border);background:#fff;color:var(--title);cursor:pointer}.sheet-grid{max-width:var(--max);margin:10px auto 0;display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:18px;overflow:auto}.sheet-grid h2{font-size:14px;margin:0 0 6px}.sheet-grid section{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 10px}.sheet-grid section h2{grid-column:1/-1}.sheet-grid a{display:block;border-top:1px solid var(--border);padding:5px 0}.sheet-grid b{display:block;font-size:13px}.sheet-grid span{display:block;color:var(--muted);font-size:11px;line-height:1.4}.search-panel{position:fixed;left:0;right:0;top:72px;z-index:95;visibility:hidden;pointer-events:none;opacity:0;transition:180ms}.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{max-width:760px;margin:auto;background:var(--frost);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:0 0 10px 10px;padding:18px}.search-card p{margin:8px 0;color:var(--muted)}.preset-links{display:flex;flex-wrap:wrap;gap:8px}.preset-links a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border-radius:9px;background:#fff;border:1px solid var(--border)}.mobile-nav{display:none}
@media(max-width:760px){.pin-nav{display:none}.site-main{padding-top:72px;padding-bottom:70px}.content{padding:20px 16px}.pin-cut,.double-ink,.pin-pages,.scene-flow,.app-wrap,.topic-directory{grid-template-columns:1fr}.img-slot.pin,.img-slot.app{width:100%;max-width:240px}.app-visuals{justify-items:start}.status-row{grid-template-columns:1fr;gap:8px}.footer-groups{grid-template-columns:1fr 1fr}.nav-sheet{max-height:66vh;padding-bottom:calc(14px + env(safe-area-inset-bottom));overflow:auto}.sheet-grid{grid-template-columns:1fr;gap:14px}.sheet-grid section{grid-template-columns:1fr}.search-panel{top:0;bottom:0;background:var(--ink)}.search-card{max-width:none;height:100%;border-radius:0;background:var(--ink);color:var(--frost);border:0;padding:90px 16px 20px}.search-card strong,.search-card p{color:var(--frost)}.preset-links a{background:var(--graphite);color:var(--frost);border-color:rgba(255,255,255,.16)}.mobile-nav{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(--frost);border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-nav a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.site-footer{padding-bottom:80px}.head-app,.sheet-btn{padding:0 10px}.footer-groups{gap:12px}}
@media(max-width:420px){.footer-groups{grid-template-columns:1fr}.brand-inner{padding-left:12px;padding-right:12px}}