:root{--bg:#0D0D0D;--deep:#070707;--surface:#171717;--surface2:#222222;--text:#C8C8C8;--title:#F2F2F2;--muted:#9A9A9A;--soft:#6E6E6E;--silver:#C8C8C8;--bright:#E8E8E8;--ink:#1A1A1A;--red:#B85A5A;--line:rgba(232,232,232,.12);--line-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--radius:12px;--max:1120px;--header-h:122px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}.skip-link{position:fixed;left:12px;top:-80px;z-index:200;background:var(--bright);color:var(--bg);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.site-header{position:fixed;left:0;right:0;top:0;z-index:100}.ink-line{height:22px;background:var(--deep);border-bottom:1px solid var(--line)}.top-shell,.bar-shell,.tab-shell{max-width:var(--max);margin:0 auto;padding:0 20px}.top-shell{height:22px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--silver)}.ink-brand{letter-spacing:.06em}.text-button,.drawer-open,.panel-close{border:0;background:transparent;color:inherit;cursor:pointer}.text-button{min-height:22px;padding:0 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a{display:block;color:var(--muted);padding:3px 0}.footer-grid a:hover{color:var(--bright)}.footer-note{max-width:900px;color:var(--muted);margin:18px 0 6px}.footer-copy{margin:0;color:var(--soft)}.drawer-panel{position:fixed;z-index:130;left:0;top:0;bottom:0;width:400px;max-width:86vw;background:#101010;border-right:1px solid var(--line-strong);box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s}.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:78px;display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{height:28px;width:auto;object-fit:contain}.drawer-brand strong{display:block;color:var(--title)}.drawer-brand span{display:block;font-size:11px;color:var(--muted)}.panel-close{min-width:54px;height:38px;border:1px 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@media(max-width:860px){:root{--header-h:82px}.case-tabs{display:none}.site-main{padding-top:calc(var(--header-h) + 22px)}.cards-3,.cards-4{grid-template-columns:repeat(2,1fr)}.number-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.image-feature{grid-template-columns:1fr}.search-panel{top:82px}.shelf-card{grid-template-columns:64px 1fr}.shelf-card .shelf-meta{grid-column:2}.site-footer{padding-bottom:calc(64px + env(safe-area-inset-bottom))}.mobile-bottom{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(5,1fr);background:#090909;border-top:1px solid var(--line-strong)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--silver)}.mobile-bottom a.is-current{background:var(--bright);color:var(--bg)}}
@media(max-width:620px){.top-shell,.bar-shell,.tab-shell,.shell,.footer-shell{padding-left:16px;padding-right:16px}.top-shell{padding-left:12px;padding-right:12px}.bar-shell{grid-template-columns:minmax(86px,1fr) auto minmax(86px,1fr);gap:8px}.brand-link{font-size:15px;max-width:110px;overflow:hidden}.brand-link img{height:26px;max-width:110px}.drawer-open{min-width:72px;height:44px}.app-link{min-width:86px;height:44px}.cards-3,.cards-2,.cards-4,.number-grid{grid-template-columns:1fr}.hero-visual{height:260px}.media-slot.tall{height:340px}.footer-grid{grid-template-columns:1fr 1fr;gap:14px}.drawer-panel{width:86vw}.search-panel{top:0;bottom:0;background:var(--deep);transform:none}.search-card{height:100%;max-width:none;border-radius:0;border:0;padding:18px 16px;padding-top:70px}.search-presets{grid-template-columns:repeat(2,1fr)}.page-head h1,.hero h1{font-size:24px}.shelf-card{grid-template-columns:1fr;gap:8px}.shelf-card .shelf-meta{grid-column:auto}.outline-item{grid-template-columns:38px 1fr}}

.app-icon{width:48px;height:48px;margin-bottom:14px;border-radius:12px;overflow:hidden;background:var(--surface2);display:flex;align-items:center;justify-content:center}.app-icon img{width:48px;height:48px;object-fit:contain}