*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4F3F1;color:#2A2A2A;font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(960px,calc(100% - 32px));margin:auto}.top-rail{position:fixed;top:0;left:0;right:0;height:18px;background:#161616;color:#FAF9F7;z-index:1000;font-size:12px}.top-rail-inner{height:18px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:#FAF9F7;height:44px;min-width:44px;padding:0 4px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.brand-bar{position:fixed;top:18px;left:0;right:0;height:54px;background:#FAF9F7;border-bottom:1px solid rgba(22,22,22,.14);z-index:999}.brand-bar-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-home{display:flex;align-items:center;min-height:44px}.brand-logo,.footer-logo,.sheet-brand img{height:24px;max-width:160px;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:800;color:#161616}.brand-actions{display:flex;gap:8px;align-items:center}.soft-link,.soft-button{height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 15px;border:1px solid rgba(22,22,22,.14);background:#fff;color:#161616;border-radius:10px;cursor:pointer}.pin-nav{position:fixed;top:72px;left:0;right:0;height:44px;background:#EDECEA;border-bottom:1px solid rgba(22,22,22,.10);z-index:998}.pin-nav-inner{height:44px;display:flex;align-items:center;gap:10px}.pin-mark{width:12px;height:16px;background:#161616;border-radius:3px;box-shadow:0 6px 16px rgba(16,16,16,.18)}.pin-link{min-height:44px;display:flex;align-items:center;padding:0 12px;border:1px solid rgba(22,22,22,.18);border-radius:8px;color:#2E2E2E;font-size:13px}.pin-link.is-current,.mobile-bottom a.is-current{background:#161616;color:#FAF9F7;box-shadow:0 6px 16px rgba(16,16,16,.18)}.site-main{padding:146px 0 64px}.breadcrumb{font-size:13px;color:#5C5C5C;margin:0 0 18px}.breadcrumb a{color:#161616}.hero-intro{padding:12px 0 24px}.index-pin-row{display:flex;align-items:center;gap:10px;font-size:13px;color:#5C5C5C;margin-bottom:16px}.tiny-pin{width:12px;height:16px;background:#161616;border-radius:3px}.hero-intro h1,.page-head h1{font-size:24px;line-height:1.3;color:#161616;margin:0 0 8px}.lead{font-size:18px;color:#161616;margin:0 0 14px}.intro-copy{max-width:760px;margin:0 0 18px}.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:10px;border:0;font-size:14px;transition:filter .18s,box-shadow .18s,transform .18s}.btn-primary{background:linear-gradient(135deg,#3A3A3A 0%,#161616 55%,#0C0C0C 100%);color:#FAF9F7;box-shadow:0 6px 16px rgba(16,16,16,.18)}.btn-secondary{background:#fff;color:#161616;border:1px solid rgba(22,22,22,.14)}.btn:hover,.pin-link.is-current:hover,.mobile-bottom 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,.pin-link.is-current:active,.mobile-bottom 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 #C8C4BC;outline-offset:2px}.section{padding:24px 0;border-top:1px solid rgba(22,22,22,.14)}.section h2{font-size:20px;color:#161616;margin:0 0 12px}.section h3{font-size:16px;color:#161616;margin:0 0 8px}.muted{color:#5C5C5C}.small{font-size:13px}.image-slot{background:#FAF9F7;border:1px solid rgba(22,22,22,.12);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}.slot-240{width:240px;height:176px;flex:0 0 240px}.slot-wide{width:100%;height:168px}.slot-160{width:100%;height:160px}.slot-app{width:240px;height:320px;float:right;margin:0 0 18px 24px}.slot-banner{width:100%;height:200px}.pin-cut{display:flex;gap:22px;align-items:center}.pin-cut-copy{flex:1}.dual-ink{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}.ink-card{background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px;padding:18px;box-shadow:0 12px 28px rgba(16,16,16,.05)}.page-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.page-sheet{background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px;padding:18px}.status-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.status-item{background:#fff;border:1px solid rgba(22,22,22,.14);border-left:4px solid #B43A32;border-radius:10px;padding:16px}.status-label{display:inline-block;padding:3px 8px;border-radius:999px;background:#161616;color:#FAF9F7;font-size:12px;margin-bottom:8px}.note-long{max-width:780px}.note-long blockquote{margin:18px 0;padding:14px 18px;border-left:4px solid #B43A32;background:#EDECEA;color:#2A2A2A}.topic-list{display:grid;gap:12px}.topic-row{display:grid;grid-template-columns:150px 1fr auto;gap:16px;align-items:center;background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px;padding:16px}.scene-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.scene-item{background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px;padding:16px}.wrap-note:after{content:"";display:block;clear:both}.app-icon{width:48px;height:48px;object-fit:contain;border-radius:10px;margin-bottom:10px}.terms{display:grid;gap:14px}.term{background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px;padding:18px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px;padding:18px}.faq-item h2{font-size:16px;margin:0 0 8px}.brand-cover{width:240px;height:176px;float:left;margin:0 22px 14px 0}.site-footer{background:#101010;color:#E6E4E0;border-top:1px solid #C8C4BC;font-size:13px;padding:30px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:24px}.footer-grid h3{font-size:14px;color:#FAF9F7;margin:0 0 8px}.footer-grid a{display:block;color:#E6E4E0;padding:3px 0}.footer-brand span{display:block;margin:6px 0;color:#C8C4BC}.footer-brand p{max-width:360px}.footer-bottom{border-top:1px solid rgba(200,196,188,.22);margin-top:20px;padding-top:14px;color:#C8C4BC}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.48);opacity:0;visibility:hidden;pointer-events:none;transition:.18s;z-index:1100}.overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.locked{overflow:hidden}.nav-sheet{position:fixed;left:0;right:0;bottom:0;max-height:200px;background:#FAF9F7;border-top:1px solid rgba(22,22,22,.18);transform:translateY(105%);visibility:hidden;pointer-events:none;transition:.22s;z-index:1200;overflow:auto}.nav-sheet.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.sheet-head{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid rgba(22,22,22,.12)}.sheet-brand{display:flex;gap:10px;align-items:center}.icon-close,.search-head button{min-height:44px;border:1px solid rgba(22,22,22,.14);background:#fff;border-radius:10px;padding:0 14px;cursor:pointer}.sheet-groups{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:18px;padding:12px 16px 18px}.sheet-groups h3{font-size:13px;margin:0 0 6px}.sheet-groups a{display:inline-flex;flex-direction:column;vertical-align:top;width:calc(50% - 6px);padding:5px 6px;margin-right:4px;border-radius:8px}.sheet-groups span{font-size:11px;color:#5C5C5C}.search-panel{position:fixed;top:72px;left:0;right:0;background:#FAF9F7;border-bottom:1px solid rgba(22,22,22,.16);transform:translateY(-120%);visibility:hidden;pointer-events:none;transition:.2s;z-index:1190}.search-panel.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.search-inner{padding:16px 0}.search-head{display:flex;justify-content:space-between;align-items:center}.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.preset-links a{min-height:44px;display:flex;align-items:center;padding:0 14px;background:#fff;border:1px solid rgba(22,22,22,.14);border-radius:10px}.mobile-bottom{display:none}.related-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.related-links a{padding:8px 12px;background:#EDECEA;border-radius:8px}.kicker{display:inline-block;font-size:12px;color:#B43A32;font-weight:700;margin-bottom:6px}
@media(max-width:760px){.wrap{width:calc(100% - 32px)}.pin-nav{display:none}.site-main{padding-top:94px;padding-bottom:78px}.brand-actions{gap:6px}.soft-link,.soft-button{padding:0 10px}.pin-cut{align-items:flex-start}.slot-240{width:180px;height:150px;flex-basis:180px}.dual-ink,.page-pair,.status-strip,.scene-list,.footer-grid{grid-template-columns:1fr}.topic-row{grid-template-columns:1fr}.slot-app{float:none;width:100%;max-width:240px;margin:0 0 16px auto}.brand-cover{float:none;width:100%;margin:0 0 16px}.nav-sheet{max-height:66%;}.sheet-groups{grid-template-columns:1fr;padding-bottom:80px}.sheet-groups a{display:flex;width:100%;padding:7px 4px}.search-panel{top:0;bottom:0;background:#161616;color:#FAF9F7;z-index:1300;transform:translateY(-105%)}.search-inner{padding-top:28px}.search-head button{background:#2E2E2E;color:#FAF9F7;border-color:#5C5C5C}.preset-links a{background:#2E2E2E;color:#FAF9F7;border-color:#5C5C5C}.mobile-bottom{position:fixed;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:#FAF9F7;border-top:1px solid rgba(22,22,22,.14);z-index:1001}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;min-height:48px}.pin-cut{display:block}.slot-240{width:100%;height:176px;margin-bottom:14px}}