:root{--bg-page:#0b0d12;--bg-stage:#000000;--surface:#14161c;--surface-soft:#1c1f27;--text:#f6f7f9;--text-soft:#cbd0d8;--muted:#8b929e;--border:rgba(255,255,255,0.12);--accent:#fe2c55;--accent-soft:rgba(254,44,85,0.16);--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--stage-width:506px;--stage-max-height:900px;--viewport-height:100vh;--safe-bottom:env(safe-area-inset-bottom,0px)}@supports (height:100dvh){:root{--viewport-height:100dvh}}*,:after,:before{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg-page);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}a{text-decoration:none}a,button{color:inherit}button{font:inherit;background:none;border:none;cursor:pointer;-webkit-tap-highlight-color:transparent}img,video{display:block;max-width:100%}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.app-shell{height:var(--viewport-height);overflow:hidden;background:radial-gradient(1100px 620px at 50% -10%,rgba(254,44,85,.14),transparent 60%),var(--bg-page)}.layout{display:flex;width:100%;height:100%}.layout-stage{flex:1 1;min-width:0;display:flex;align-items:center;justify-content:center}.layout-nav,.layout-panel{display:none}.stage{position:relative;width:100%;height:100%;background:var(--bg-stage);overflow:hidden}@media (min-width:640px) and (max-width:1023px){.app-shell{padding:16px}.stage{--stage-height:min(calc(var(--viewport-height) - 32px),var(--stage-max-height));height:var(--stage-height);width:min(calc(var(--stage-height) * 9 / 16),100%);border-radius:var(--radius-lg);box-shadow:0 40px 80px -40px rgba(0,0,0,.9)}}@media (max-height:560px) and (max-width:1023px){.app-shell{padding:0}.stage{width:min(520px,100%);height:var(--viewport-height);border-radius:0;box-shadow:none}}@media (min-width:1024px){.layout{--stage-height:var(--viewport-height);display:grid;grid-template-columns:220px minmax(0,1fr) 392px;grid-gap:0;gap:0}.layout-nav{display:flex;flex-direction:column;gap:4px;min-height:0;padding:20px 14px}.layout-panel{display:block;height:var(--stage-height);background:var(--surface);border-left:1px solid var(--border);overflow:hidden}.layout-stage{background:var(--bg-stage)}.stage{width:100%;height:100%;border-radius:0;box-shadow:none}.slide-media{inset:0;margin:auto;width:min(100%,calc(var(--stage-height) * var(--video-aspect, .5625)));height:auto;aspect-ratio:var(--video-aspect,9/16)}.slide-overlay{padding:0 96px 26px 30px;background:none;max-width:72%}.actions{right:24px;bottom:44px}.topbar-title{display:none}.topbar{background:none}.stage-nav{display:flex}}.nav-brand{display:flex;align-items:center;gap:10px;padding:8px 12px 18px;font-size:17px;font-weight:700;letter-spacing:-.01em}.nav-mark{position:relative;width:22px;height:22px;border-radius:7px;background:var(--accent)}.nav-mark:after{content:"";position:absolute;inset:0;margin:auto;width:0;height:0;border-left:8px solid #fff;border-top:5px solid transparent;border-bottom:5px solid transparent}.nav-item{display:flex;align-items:center;gap:10px;height:42px;padding:0 12px;border-radius:10px;color:var(--text-soft);font-size:14px;font-weight:550;text-align:left}.nav-item:hover{background:var(--surface);color:var(--text)}.nav-fill{flex:1 1}.stage-nav{display:none;position:absolute;right:12px;top:50%;transform:translateY(-50%);z-index:4;flex-direction:column;gap:10px}.stage-nav .action-button:disabled{opacity:.35;cursor:not-allowed}.tabs{display:flex;gap:4px}.tab{padding:5px 11px;border-radius:999px;font-size:14px;font-weight:600;color:var(--text-soft)}.tab[data-active=true]{color:var(--text);background:rgba(255,255,255,.12)}.nav-item[data-active=true]{background:var(--surface);color:var(--text)}.nav-label{flex:1 1}.badge-wrap{position:relative;display:inline-flex}.badge{min-width:17px;height:17px;padding:0 5px;border-radius:999px;background:var(--accent);color:#fff;font-size:11px;font-weight:600;line-height:17px;text-align:center;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.badge-wrap .badge{position:absolute;top:-6px;right:-8px}.bottom-nav{position:absolute;inset:auto 0 0;z-index:6;display:flex;align-items:flex-end;justify-content:space-around;height:calc(56px + var(--safe-bottom));padding-bottom:var(--safe-bottom);background:#0b0d12;border-top:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.bottom-item{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:56px;padding:6px 4px;font-size:11px;color:var(--muted)}.bottom-item[data-active=true]{color:var(--text)}.pane{position:absolute;inset:0;z-index:10;display:flex;flex-direction:column;background:var(--bg-page);animation:fade-in .14s ease}@media (max-width:1023px){.pane{bottom:calc(56px + var(--safe-bottom))}}.pane-head{display:flex;align-items:center;gap:10px;padding:14px 16px 10px;border-bottom:1px solid var(--border)}.pane-title{flex:1 1;font-weight:600;font-size:15px}.pane-body{flex:1 1;overflow-y:auto;padding:14px 16px calc(20px + var(--safe-bottom))}.search-inline{display:flex;align-items:center;gap:8px;width:100%;height:38px;padding:0 6px 0 12px;border-radius:999px;background:rgba(20,22,28,.85);border:1px solid var(--border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--muted)}@media (min-width:1024px){.bottom-nav,.tabs{display:none}}@media (max-width:1023px){.slide-overlay{padding-bottom:calc(74px + var(--safe-bottom))}.actions{bottom:calc(86px + var(--safe-bottom))}}.search-box{display:flex;align-items:center;gap:10px;padding:0 6px 0 14px;height:48px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--muted)}.search-input{flex:1 1;min-width:0;height:100%;border:none;background:none;color:var(--text);font:inherit;outline:none}.people{display:flex;flex-direction:column;gap:2px}.person{display:flex;align-items:center;gap:12px;padding:10px 8px;border-radius:var(--radius-sm)}.person:hover{background:var(--surface)}.person-main{min-width:0}.notifications,.person-main{display:flex;flex-direction:column}.notification{position:relative;display:flex;align-items:center;gap:12px;padding:12px 8px;border-radius:var(--radius-sm)}.notification:hover{background:var(--surface)}.notification-icon{position:absolute;left:34px;bottom:10px;display:grid;place-items:center;width:20px;height:20px;border-radius:999px;background:var(--accent);color:#fff}.notification-icon[data-type=comment]{background:#3b82f6}.notification-icon[data-type=follow]{background:#10b981}.notification-main{flex:1 1;display:flex;flex-direction:column;gap:2px;min-width:0}.notification-text{font-size:14px;color:var(--text)}.notification-poster{width:46px;height:62px;object-fit:cover;border-radius:var(--radius-sm);background:var(--surface-soft)}.topbar{position:absolute;inset:0 0 auto;z-index:5;display:flex;align-items:center;gap:8px;padding:14px 14px 26px;background:linear-gradient(180deg,rgba(0,0,0,.55),transparent);pointer-events:none}.topbar>*{pointer-events:auto}.topbar-title{display:flex;align-items:baseline;gap:8px;font-weight:650;letter-spacing:-.01em}.topbar-title span{font-size:13px;font-weight:400;color:var(--text-soft)}.topbar-spacer{flex:1 1}.pill{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:999px;background:rgba(20,22,28,.6);border:1px solid var(--border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-size:13px;font-weight:550;transition:background .15s ease,transform .15s ease}.pill:hover{background:rgba(30,33,41,.75)}.pill:active{transform:scale(.97)}.pill-icon{height:34px;width:34px;padding:0;justify-content:center}.feed{height:100%;overflow-y:auto;overflow-x:hidden;scroll-snap-type:y mandatory;scrollbar-width:none;overscroll-behavior-y:contain}.feed::-webkit-scrollbar{display:none}.slide{position:relative;height:100%;scroll-snap-align:start;scroll-snap-stop:always;background:var(--bg-stage);overflow:hidden;-webkit-user-select:none;-moz-user-select:none;user-select:none;contain:layout paint}.slide-media{position:absolute;inset:0}.slide-backdrop{position:absolute;inset:-8%;background-size:cover;background-position:50%;filter:blur(20px) saturate(1.2);transform:scale(1.12);will-change:transform;opacity:.55}.slide-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:transparent;transform:translateZ(0)}.slide-skeleton{position:absolute;inset:0;background:linear-gradient(180deg,#15171d,#0b0d12)}.slide-paused{position:absolute;inset:0;display:grid;place-items:center;z-index:3;background:rgba(0,0,0,.18);animation:fade-in .12s ease;pointer-events:none}.slide-error{position:absolute;inset:auto 0 50%;z-index:4;display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--text-soft);font-size:13px}.slide-paused-icon{display:grid;place-items:center;width:68px;height:68px;border-radius:999px;background:rgba(0,0,0,.45);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.slide-overlay{position:absolute;inset:auto 0 0;z-index:2;padding:60px 84px calc(20px + var(--safe-bottom)) 16px;background:linear-gradient(0deg,rgba(0,0,0,.78),transparent);pointer-events:none}.slide-overlay>*{pointer-events:auto}.slide-author{display:flex;align-items:center;gap:9px;margin-bottom:8px;font-weight:600}.slide-author-meta{display:flex;flex-direction:column;line-height:1.25}.slide-author-meta small{font-weight:400;font-size:12px;color:var(--muted)}.slide-caption{margin:0 0 8px;font-size:14px;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.slide-topics{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--text-soft)}.slide-topics a,.slide-topics span{color:var(--text);font-weight:550}.slide-topics a:hover{color:var(--accent)}.actions{position:absolute;right:10px;bottom:calc(28px + var(--safe-bottom));z-index:4;gap:16px}.action,.actions{display:flex;flex-direction:column;align-items:center}.action{gap:4px;font-size:12px;font-weight:550;color:var(--text)}.action-button{display:grid;place-items:center;width:44px;height:44px;border-radius:999px;background:rgba(20,22,28,.55);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:transform .12s ease,background .15s ease,color .15s ease}.action:hover .action-button{background:rgba(35,38,47,.7)}.action:active .action-button{transform:scale(.9)}.action-button[data-active=true]{color:var(--accent);background:var(--accent-soft)}.action-count{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--text-soft)}@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.22)}to{transform:scale(1)}}.action-button[data-animate=true]{animation:pop .32s ease}.progress{position:absolute;inset:auto 0 0;z-index:4;height:3px;background:rgba(255,255,255,.18)}.progress>div{height:100%;background:var(--accent);transition:width .2s linear}.sheet-backdrop{position:fixed;inset:0;z-index:20;display:flex;align-items:flex-end;justify-content:center;background:rgba(0,0,0,.55);animation:fade-in .16s ease}.sheet{width:100%;max-width:var(--stage-width);max-height:78%;display:flex;flex-direction:column;background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border:1px solid var(--border);border-bottom:none;animation:slide-up .2s ease;padding-bottom:var(--safe-bottom)}@media (min-width:640px){.sheet-backdrop{align-items:center;padding:16px}.sheet{max-height:min(620px,calc(var(--viewport-height) - 60px));border-radius:var(--radius-lg);border-bottom:1px solid var(--border)}}.sheet-header{display:flex;align-items:center;gap:10px;padding:14px 16px 10px;border-bottom:1px solid var(--border)}.sheet-title{flex:1 1;font-weight:600;font-size:14px}.sheet-close{display:grid;place-items:center;width:30px;height:30px;border-radius:999px;color:var(--muted)}.sheet-close:hover{background:var(--surface-soft);color:var(--text)}.sheet-body{flex:1 1;overflow-y:auto;padding:6px 16px}.sheet-footer{display:flex;gap:8px;padding:10px 14px 12px;border-top:1px solid var(--border)}.sheet-empty{padding:28px 0;text-align:center;color:var(--muted);font-size:14px}.comments{display:flex;flex-direction:column;height:100%;min-height:0}.sheet>.comments{flex:1 1;min-height:0}.comments-head{display:flex;align-items:center;gap:10px;padding:14px 16px 10px;border-bottom:1px solid var(--border)}.comments-title{flex:1 1;font-weight:600;font-size:14px}.comments-body{flex:1 1;overflow-y:auto;padding:6px 16px}.comments-foot{padding:10px 14px 12px;border-top:1px solid var(--border)}.composer{display:flex;gap:8px}.panel-empty{padding:30px 0;text-align:center;color:var(--muted);font-size:14px}.panel-more{width:100%;margin:8px 0 4px}.panel-error{margin:8px 0 0;color:var(--accent);font-size:12px}.comment{display:flex;gap:10px;padding:10px 0}.comment-main{flex:1 1;min-width:0}.comment-head{display:flex;align-items:baseline;gap:8px;font-size:13px}.comment-head b{font-weight:600}.comment-head time{color:var(--muted);font-size:12px}.comment-body{margin:2px 0 0;font-size:14px;color:var(--text-soft);word-break:break-word}.comment-delete{align-self:flex-start;color:var(--muted);padding:4px;border-radius:6px}.comment-delete:hover{color:var(--accent);background:var(--accent-soft)}.text-input{flex:1 1;min-width:0;height:40px;padding:0 12px;color:var(--text);background:var(--surface-soft);border:1px solid var(--border);border-radius:999px;font-size:14px}.text-input::placeholder{color:var(--muted)}.text-input:focus{outline:none;border-color:rgba(254,44,85,.5)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:40px;padding:0 16px;border-radius:999px;font-size:14px;font-weight:600;background:var(--surface-soft);border:1px solid var(--border)}.btn:hover{background:#23262f}.btn-primary{background:var(--accent);border-color:transparent;color:#fff}.btn-primary:hover{background:#e02348}.btn:disabled{opacity:.55;cursor:not-allowed}.avatar{flex:none;display:grid;place-items:center;border-radius:999px;border:1.5px solid rgba(255,255,255,.85);overflow:hidden;font-weight:600;color:#10131a;background-size:cover;background-position:50%}.avatar-0{background-color:#f6c177}.avatar-1{background-color:#9ad0c2}.avatar-2{background-color:#f4a9a8}.avatar-3{background-color:#a8b6f4}.avatar-4{background-color:#e0c3fc}.avatar-5{background-color:#b8e0a0}.doc{min-height:var(--viewport-height);background:var(--bg-page)}.doc-header{position:-webkit-sticky;position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:14px;padding:12px 24px;background:rgba(11,13,18,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.doc-back{display:inline-flex;align-items:center;gap:2px;height:32px;padding:0 10px 0 6px;margin-left:-6px;border-radius:8px;color:var(--text-soft);font-size:14px}.doc-back:hover{background:var(--surface);color:var(--text)}.doc-brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;letter-spacing:-.01em}.doc-title{flex:1 1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:14px}.doc-actions{display:flex;align-items:center;gap:8px}.doc-main{width:100%;padding:24px}@media (max-width:640px){.doc-header{padding:10px 14px}.doc-brand{font-size:15px}.doc-main{padding:16px 14px calc(24px + var(--safe-bottom))}}.doc-narrow{max-width:720px}.upload-form{display:flex;flex-direction:column;gap:14px}.upload-picker{display:flex;justify-content:center}.upload-drop{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%;padding:38px 20px;border:1px dashed var(--border-strong,rgba(255,255,255,.2));border-radius:var(--radius-md);background:var(--surface);color:var(--text-soft);text-align:center}.upload-drop:hover{border-color:var(--accent);color:var(--text)}.upload-drop b{font-size:15px;font-weight:600}.upload-preview{width:100%;max-height:46vh;border-radius:var(--radius-md);background:#000}.field{display:flex;flex-direction:column;gap:6px}.label{font-size:13px;color:var(--muted)}.text-area{width:100%;padding:10px 12px;color:var(--text);background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);font:inherit;resize:vertical}.text-area:focus{outline:none;border-color:rgba(254,44,85,.5)}.upload-actions{display:flex;gap:10px}.upload-progress{height:4px;border-radius:999px;background:var(--surface-soft);overflow:hidden}.upload-progress>div{height:100%;background:var(--accent);transition:width .2s ease}.detail-grid{display:grid;grid-gap:24px;gap:24px;align-items:start;grid-template-columns:minmax(280px,400px) minmax(0,1fr) minmax(320px,420px)}.detail-info{min-width:0;max-width:720px}.detail-comments{height:min(72vh,720px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}@media (max-width:1180px){.detail-grid{grid-template-columns:minmax(260px,380px) minmax(0,1fr)}.detail-comments{grid-column:1/-1;height:60vh}}@media (max-width:760px){.detail-grid{grid-template-columns:minmax(0,1fr)}.detail-comments{height:56vh}}.card{background:var(--surface);padding:16px}.card,.player{border:1px solid var(--border);border-radius:var(--radius-md)}.player{position:relative;aspect-ratio:9/16;max-height:68vh;overflow:hidden}.player,.player-video{width:100%;background:#000}.player-video{height:100%;object-fit:contain}.doc-h1{margin:0 0 8px;font-size:20px;line-height:1.35;letter-spacing:-.01em}.doc-h2{margin:0 0 12px;font-size:15px;color:var(--text-soft)}.doc-section{margin-top:24px}.stats{display:flex;flex-wrap:wrap;gap:14px;margin:12px 0 0;color:var(--muted);font-size:13px}.stats span{display:inline-flex;align-items:center;gap:5px}.stats b{color:var(--text)}.author-card{display:flex;align-items:center;gap:12px;margin:18px 0 0}.author-main{flex:1 1;display:flex;flex-direction:column;min-width:0}.profile-head{display:flex;align-items:center;gap:16px;margin-bottom:22px}.profile-main{flex:1 1;min-width:0}.profile-main .doc-h1,.profile-main p{margin:0}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));grid-gap:10px;gap:10px}@media (max-width:560px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.grid-item{position:relative;display:block;aspect-ratio:3/4;border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-soft)}.grid-item img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}.grid-item:hover img{transform:scale(1.04)}.grid-fallback{display:block;width:100%;height:100%;background:linear-gradient(160deg,#1f2430,#12151c)}.grid-meta{position:absolute;left:6px;bottom:6px;padding:2px 7px;border-radius:999px;background:rgba(0,0,0,.55);font-size:12px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.muted{color:var(--muted);font-size:13px}.sr-only{width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.sr-only,.toast{position:absolute}.toast{left:50%;bottom:calc(30px + var(--safe-bottom));transform:translateX(-50%);z-index:8;padding:8px 14px;border-radius:999px;background:rgba(20,22,28,.9);border:1px solid var(--border);font-size:13px;animation:fade-in .16s ease}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up{0%{transform:translateY(14px);opacity:0}to{transform:translateY(0);opacity:1}}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}