/* Desktop black/gold visual language, browser-only affordances. */
.bw-gate{position:fixed;inset:0;z-index:2147483640;display:grid;place-items:center;background:radial-gradient(ellipse at 60% 0,rgba(211,174,106,.12),transparent 60%),#090a0c;color:#e9e5da;font-family:Inter,"Microsoft YaHei",sans-serif;padding:24px}.bw-gate-card{width:min(520px,100%);border:1px solid #9f815232;border-radius:24px;background:#111214;box-shadow:0 26px 90px #0008;padding:42px}.bw-brand{letter-spacing:3px;color:#d3b888;font-size:15px;margin-bottom:32px}.bw-gate h1{font-size:25px;line-height:1.5}.bw-gate p,.bw-note{color:#acaaa5;font-size:13px;line-height:1.8}.bw-login{display:grid;gap:14px;width:100%;margin-top:22px}.bw-login input{background:#191a1c;border:1px solid #7774;border-radius:10px;padding:14px;color:#eee}.bw-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:22px}.bw-button{border:1px solid #ccb07870;border-radius:10px;padding:11px 18px;background:linear-gradient(135deg,#dec999,#b99a61);color:#17130d;cursor:pointer;font-weight:600}.bw-button:disabled{opacity:.5;cursor:wait}.bw-gate a{color:#d2bd95;text-decoration:none}.bw-capability{max-width:950px;margin:32px auto;padding:42px;border-radius:22px;background:linear-gradient(140deg,#212019,#141516 65%);border:1px solid #b69a602e;color:#e5dfd0}.bw-capability small{color:#c4aa79;letter-spacing:2px}.bw-capability h2{font-size:28px;margin:20px 0}.bw-capability p{max-width:730px;color:#b2afa8;line-height:1.9}.bw-note{border:1px solid #bfa26230;background:#bfa26208;border-radius:10px;padding:10px 14px;margin:10px 0}.bw-media-upload{display:flex;gap:12px;align-items:center;padding:12px 0;font-size:13px;color:#ccb787}.bw-media-upload input{max-width:230px;font-size:12px}[data-browser-local-only]{display:none!important}.bw-loading main{visibility:hidden}video{object-fit:contain}.ve-case video,.vs-case video{object-fit:contain!important}.bw-gate input:focus-visible,.bw-button:focus-visible{outline:2px solid #dec999;outline-offset:3px}@media(max-width:760px){.bw-gate-card,.bw-capability{padding:24px}.bw-capability{margin:16px}.bw-media-upload{align-items:flex-start;flex-direction:column}}

/* Web-only navigation drawer: keep the installed desktop layout above 760px. */
.bw-nav-toggle,.bw-nav-shade{display:none}
@media(max-width:760px){
 html,body{height:100dvh!important;overflow:hidden!important}
 body header.topbar{position:fixed!important;inset:0 0 auto!important;height:66px!important;min-height:66px!important;box-sizing:border-box;z-index:100!important;padding:0 12px!important;gap:10px!important;flex-wrap:nowrap!important}
 body header.topbar .brand{gap:8px!important;min-width:0!important}body header.topbar .brand h1{font-size:16px!important;white-space:nowrap!important}body header.topbar .brand .logo{height:28px!important;width:28px!important;flex-shrink:0}
 body header.topbar .brand-slogan,body header.topbar #hvBell,body header.topbar #topbarBalance,body header.topbar .acct-group{display:none!important}
 body header.topbar .zlw-actions{margin-left:auto!important;flex-shrink:0}body header.topbar .zlw-menu{max-width:calc(100vw - 24px);right:0!important}
 body .bw-nav-toggle{display:inline-flex!important;justify-content:center;align-items:center;flex-shrink:0;width:34px;height:36px;padding:0;border:1px solid #c4a66740;border-radius:9px;background:#c4a6670d;color:#dcc594;font-size:22px;cursor:pointer}
 body main{position:fixed!important;top:66px!important;left:0!important;right:0!important;bottom:0!important;margin:0!important;width:100%!important;min-width:0!important;min-height:0!important;height:calc(100dvh - 66px)!important;max-height:calc(100dvh - 66px)!important;box-sizing:border-box!important;overflow-y:auto!important;overflow-x:hidden!important;padding:16px 16px 70px!important;overscroll-behavior:contain}
 body nav.tabs.sidebar{display:flex!important;position:fixed!important;top:66px!important;left:0!important;bottom:0!important;width:min(292px,84vw)!important;min-width:0!important;min-height:0!important;height:calc(100dvh - 66px)!important;max-height:calc(100dvh - 66px)!important;box-sizing:border-box!important;margin:0!important;z-index:95!important;transform:translateX(-104%)!important;visibility:hidden;pointer-events:none;transition:transform .2s ease,visibility .2s;background:#121415!important;box-shadow:10px 0 40px #0008!important}
 body.bw-nav-open nav.tabs.sidebar{transform:translateX(0)!important;visibility:visible;pointer-events:auto}
 body.bw-nav-open .bw-nav-shade{display:block;position:fixed;inset:66px 0 0;z-index:90;border:0;border-radius:0;background:#000a;backdrop-filter:blur(2px)}
 body .ai-chat-suggestions{flex-wrap:wrap!important;max-width:100%}
 body #panel-ai-chat [data-ai-prompt]{max-width:100%;white-space:normal;overflow-wrap:anywhere}
}
@media(prefers-reduced-motion:reduce){body nav.tabs.sidebar{transition:none!important}}