*{box-sizing:border-box}
:root{--paper:#f0f7ff;--mist:#e4f0fb;--sky:#dce8f8;--accent:#4a90d9;--ink:#10203a;--muted:#5a7089;--line:rgba(74,144,217,.16);--panel:rgba(255,255,255,.78);--shadow:0 24px 70px rgba(40,80,140,.14);--radius:8px}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;overflow:hidden;background:#0e1a2e;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink)}
button,a{font:inherit}
.nav-shell{position:fixed;left:50%;top:max(10px,env(safe-area-inset-top));width:min(1200px,calc(100% - 20px));z-index:20;margin:0;transform:translateX(-50%);display:flex;gap:4px;padding:6px;border:1px solid rgba(255,255,255,.82);border-radius:var(--radius);background:rgba(255,255,255,.72);box-shadow:0 12px 34px rgba(30,60,100,.14);backdrop-filter:blur(18px);overflow-x:auto;scrollbar-width:none}
.nav-shell::-webkit-scrollbar{display:none}
.home-tab{flex:0 0 auto;height:36px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(74,144,217,.26);border-radius:var(--radius);color:#2a5a8a;background:rgba(224,242,254,.82);text-decoration:none;cursor:pointer;white-space:nowrap;font-size:13px;transition:transform 180ms ease}
.home-tab:hover{transform:translateY(-1px)}
.cat-btn{flex:0 0 auto;height:36px;padding:0 11px;display:inline-flex;align-items:center;border:1px solid transparent;border-radius:var(--radius);color:var(--muted);background:transparent;cursor:pointer;white-space:nowrap;font-size:13px;transition:all 180ms ease}
.cat-btn:hover{transform:translateY(-1px)}
.cat-btn.active{color:#0a3060;border-color:rgba(74,144,217,.3);background:#fff;box-shadow:0 6px 16px rgba(74,144,217,.14)}
.sub-bar{position:fixed;left:50%;top:max(58px,calc(env(safe-area-inset-top) + 48px));width:min(1200px,calc(100% - 20px));z-index:19;margin:0;transform:translateX(-50%);display:flex;gap:3px;padding:5px;border:1px solid rgba(255,255,255,.72);border-radius:var(--radius);background:rgba(255,255,255,.6);backdrop-filter:blur(14px);overflow-x:auto;scrollbar-width:none}
.sub-bar::-webkit-scrollbar{display:none}
.sub-btn{flex:0 0 auto;height:30px;padding:0 10px;border:1px solid transparent;border-radius:6px;color:var(--muted);background:transparent;cursor:pointer;white-space:nowrap;font-size:12px;transition:all 180ms ease}
.sub-btn:hover{background:rgba(255,255,255,.5)}
.sub-btn.active{color:#0a3060;background:#fff;border-color:rgba(74,144,217,.22);box-shadow:0 4px 12px rgba(74,144,217,.1)}
.stage-wrap{position:fixed;inset:0;overflow:hidden;background:#0e1a2e}
.stage{position:absolute;inset:0;overflow:hidden;isolation:isolate}
.scene{position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.88);background:linear-gradient(145deg,var(--ca),var(--cb))}
.scene::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(255,255,255,.18),transparent 34%),linear-gradient(0deg,rgba(0,0,0,.1),transparent 48%)}
.scene-label{position:relative;z-index:2;font-weight:800;font-size:clamp(28px,5vw,56px);text-shadow:0 2px 8px rgba(0,0,0,.5), 0 6px 22px rgba(0,0,0,.3), 0 0 40px rgba(0,0,0,.15);color:rgba(255,255,255,.95)}
.overlay-el{position:absolute;inset:0;pointer-events:none}
.side{position:fixed;right:max(14px,env(safe-area-inset-right));top:max(106px,calc(env(safe-area-inset-top)+94px));z-index:18;width:min(320px,calc(100% - 28px));max-height:calc(100vh - 170px);padding:18px;border:1px solid rgba(255,255,255,.78);border-radius:var(--radius);background:var(--panel);box-shadow:0 18px 56px rgba(30,60,100,.12);backdrop-filter:blur(16px);overflow:auto;opacity:0;pointer-events:none;transform:translateX(16px);transition:opacity 200ms ease,transform 200ms ease}
.side.open{opacity:1;pointer-events:auto;transform:translateX(0)}
.side h2{margin:0 0 8px;font-size:20px}
.side p{margin:0 0 14px;color:var(--muted);line-height:1.6;font-size:13px}
.meta-grid{display:grid;gap:8px;margin:12px 0 16px}
.meta-item{padding:10px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.5)}
.meta-item b{display:block;margin-bottom:3px;font-size:11px;color:var(--accent)}
.meta-item span{color:#405a70;font-size:12px;line-height:1.4}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.action-btn{height:36px;padding:0 14px;border:1px solid rgba(30,100,180,.2);border-radius:var(--radius);color:#fff;background:linear-gradient(135deg,#3a8fd4,#5ab0e0);cursor:pointer;box-shadow:0 8px 20px rgba(58,143,212,.2);font-size:13px}
.ghost-btn{color:#2a5a8a;background:rgba(255,255,255,.65);box-shadow:none}
.cat-indicator{position:fixed;left:max(14px,env(safe-area-inset-left));bottom:max(14px,env(safe-area-inset-bottom));z-index:18;padding:8px 16px;border-radius:var(--radius);background:rgba(255,255,255,.65);backdrop-filter:blur(12px);font-size:12px;color:#2a5a8a;font-weight:600;letter-spacing:.5px;border:1px solid rgba(255,255,255,.7)}
.info-toggle{position:fixed;right:max(14px,env(safe-area-inset-right));bottom:max(14px,env(safe-area-inset-bottom));z-index:19;width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.7);background:rgba(255,255,255,.65);backdrop-filter:blur(12px);cursor:pointer;font-size:18px;font-weight:700;color:#2a5a8a;display:grid;place-items:center;box-shadow:0 8px 24px rgba(30,60,100,.12);transition:all 200ms ease}
.info-toggle:hover{background:rgba(255,255,255,.85);transform:scale(1.08)}
.info-toggle.active{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 8px 24px rgba(74,144,217,.3)}
@media(max-width:700px){
  .side{left:8px;right:8px;top:auto;bottom:max(8px,env(safe-area-inset-bottom));width:auto;max-height:min(55vh,440px);transform:translateY(14px)}
  .side.open{transform:translateY(0)}
  .cat-indicator{display:none}
  .info-toggle{right:max(8px,env(safe-area-inset-right));bottom:auto;top:max(102px,calc(env(safe-area-inset-top)+90px));width:38px;height:38px;font-size:16px}
}