*{margin:0;padding:0;box-sizing:border-box;scrollbar-width:none}
:root{
  --bg:#000;--bg2:#16181c;--bg3:#1e2732;--bg4:#2f3336;
  --text:#e7e9ea;--text2:#71767b;--text3:#1d9bf0;
  --border:#2f3336;--hover:#080808;
  --accent:#1d9bf0;--ah:#1a8cd8;
  --green:#00ba7c;--pink:#f91880;
  --r:9999px;
}
html{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;min-height:100vh}
body{min-height:100vh;overflow-x:hidden}
::-webkit-scrollbar{width:0}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer;border:none;outline:none}
textarea,input{font-family:inherit;outline:none;border:none;background:transparent;color:var(--text)}

/* ===== LAYOUT ===== */
.layout{display:flex;max-width:1280px;margin:0 auto;min-height:100vh}

/* ===== LEFT SIDEBAR ===== */
.sidebar{width:275px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:0 16px;border-right:1px solid var(--border);flex-shrink:0;overflow-y:auto}
.logo{padding:0;width:50px;height:50px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900;border-radius:var(--r);cursor:pointer;transition:background .2s;margin:2px 0 2px;flex-shrink:0}
.logo:hover,.nav-item:hover{background:rgba(231,233,234,.1)}
.nav{display:flex;flex-direction:column;gap:0;flex:1}
.nav-item{display:flex;align-items:center;gap:16px;padding:12px;border-radius:var(--r);cursor:pointer;font-size:20px;min-width:52px;max-width:100%;transition:background .2s;color:var(--text)}
.nav-item.active{font-weight:700}
.nav-item svg{width:26px;height:26px;fill:var(--text);flex-shrink:0}
.nav-label{white-space:nowrap}
.nav-badge{position:relative}
.nav-badge .b{position:absolute;top:-4px;right:-4px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;border-radius:99px;padding:1px 4px;min-width:18px;text-align:center;display:none}
.nav-badge.has .b{display:block}
.post-btn{background:var(--accent);color:#fff;border-radius:var(--r);padding:16px 32px;font-size:17px;font-weight:700;cursor:pointer;width:calc(100% - 8px);margin:12px auto;transition:background .2s}
.post-btn:hover{background:var(--ah)}
.user-menu{margin-bottom:12px;display:flex;align-items:center;gap:12px;padding:12px;border-radius:var(--r);cursor:pointer;transition:background .2s}
.user-menu:hover{background:rgba(231,233,234,.1)}
.av{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;color:#fff;flex-shrink:0;position:relative;overflow:hidden}
.un{font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.uh{color:var(--text2);font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dots{color:var(--text2);font-size:18px;margin-left:auto;flex-shrink:0}

/* ===== MAIN ===== */
.main{flex:1;border-right:1px solid var(--border);max-width:600px;min-width:0;min-height:100vh}
.main-header{position:sticky;top:0;background:rgba(0,0,0,.9);backdrop-filter:blur(12px);z-index:10;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:20px;padding:12px 16px}
.back-btn{display:none;width:36px;height:36px;border-radius:50%;background:transparent;border:none;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center;transition:background .2s}
.back-btn:hover{background:rgba(231,233,234,.1)}
.back-btn svg{width:20px;height:20px;fill:var(--text)}
.page-title{font-size:20px;font-weight:800}
.tab-row{display:flex;border-bottom:1px solid var(--border)}
.tab{flex:1;padding:16px;text-align:center;font-size:15px;font-weight:500;color:var(--text2);cursor:pointer;position:relative;transition:background .2s}
.tab:hover{background:rgba(231,233,234,.05)}
.tab.active{color:var(--text);font-weight:700}
.tab.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:56px;height:4px;background:var(--accent);border-radius:9999px}

/* ===== COMPOSE ===== */
.compose{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}
.ca{flex:1;position:relative}
.cin{width:100%;background:transparent;border:none;outline:none;color:var(--text);font-size:20px;resize:none;padding:8px 0;min-height:52px;font-family:inherit;line-height:1.5}
.cin::placeholder{color:var(--text2)}
.ct{position:sticky;top:0;background:var(--bg)}
.ctb{display:flex;align-items:center;justify-content:space-between;padding-top:8px;border-top:1px solid var(--border);margin-top:4px}
.ctools{display:flex;gap:2px}
.tb{width:36px;height:36px;border-radius:var(--r);background:transparent;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--accent);transition:background .2s}
.tb:hover{background:rgba(29,155,240,.1)}
.tb svg{width:20px;height:20px;fill:currentColor}
/* 回复范围按钮 */
.reply-scope-btn{width:auto;height:auto;padding:2px 8px;border-radius:999px;display:inline-flex;align-items:center;color:var(--accent);font-size:13px;gap:2px;transition:background .2s}
.reply-scope-btn:hover{background:rgba(29,155,240,.1)}
.reply-scope-btn svg{width:16px;height:16px}
/* 回复范围菜单项 */
.rs-item:hover{background:var(--bg3)}
.rs-active{background:rgba(29,155,240,.08)}
.tb.disabled{opacity:.4;pointer-events:none}
.pb{background:var(--accent);color:#fff;border-radius:var(--r);padding:8px 20px;font-size:15px;font-weight:700;cursor:pointer;transition:background .2s;border:none}
.pb:hover{background:var(--ah)}
.pb:disabled{opacity:.5;cursor:default}

/* ===== TWEET CARD ===== */
.tweet{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s}
.tweet:hover{background:var(--hover)}
.ta{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;color:#fff;flex-shrink:0;cursor:pointer;overflow:hidden}
.ta img{width:100%;height:100%;object-fit:cover}
.tbdy{flex:1;min-width:0}
.th{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.tn{font-weight:700;font-size:15px;cursor:pointer}
.tn:hover{text-decoration:underline}
.thandle{color:var(--text2);font-size:15px;cursor:pointer}
.tt{color:var(--text2);font-size:15px}
.vb{color:var(--accent)}
.vb svg{width:18px;height:18px;fill:var(--accent)}
.ttxt{margin-top:4px;font-size:15px;line-height:1.6;word-break:break-word}
.ttxt a{color:var(--accent)}
.ttxt a:hover{text-decoration:underline}
.ttxt img{max-width:100%;border-radius:16px;margin-top:12px;display:block;max-height:360px;object-fit:cover;border:1px solid var(--border)}
.tmedia{margin-top:12px;border-radius:16px;overflow:hidden;border:1px solid var(--border)}
.tmedia img,.tmedia video{width:100%;display:block;max-height:360px;object-fit:cover}
.tpoll{margin-top:12px;background:transparent;border:1px solid var(--border);border-radius:16px;overflow:hidden}
.poll-opt{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s}
.poll-opt:last-child{border-bottom:none}
.poll-opt:hover{background:rgba(231,233,234,.05)}
.poll-pct{font-size:14px;font-weight:700;min-width:40px;text-align:right}
.poll-label{font-size:15px}
.tactions{display:flex;margin-top:12px;max-width:425px;gap:4px}
.ab{display:flex;align-items:center;gap:6px;color:var(--text2);cursor:pointer;border-radius:var(--r);padding:6px;transition:color .2s,background .2s;font-size:13px;flex:1;border:none;background:transparent}
.ab svg{width:18px;height:18px;fill:var(--text2);flex-shrink:0}
.ab:hover{background:rgba(29,155,240,.1);color:var(--accent)}
.ab:hover svg{fill:var(--accent)}
.ab.like:hover{background:rgba(249,24,128,.1);color:var(--pink)}
.ab.like:hover svg{fill:var(--pink)}
.ab.rt:hover{background:rgba(0,186,124,.1);color:var(--green)}
.ab.rt:hover svg{fill:var(--green)}
.ab.liked{color:var(--pink)}
.ab.liked svg{fill:var(--pink)}
.ab.retweeted{color:var(--green)}
.ab.retweeted svg{fill:var(--green)}
.ac{font-size:13px}
.more-btn{margin-left:auto;color:var(--text2);cursor:pointer;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s;flex-shrink:0;background:transparent;border:none}
.more-btn:hover{background:rgba(29,155,240,.1);color:var(--accent)}
.more-btn svg{width:18px;height:18px;fill:currentColor}
.tlink{display:flex;gap:12px;padding:12px 16px;border:1px solid var(--border);border-radius:16px;margin-top:12px;cursor:pointer;transition:background .2s}
.tlink:hover{background:rgba(231,233,234,.05)}
.tlink-icon{width:48px;height:48px;border-radius:12px;overflow:hidden;flex-shrink:0;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:900;color:var(--text2)}
.tlink-body{flex:1;min-width:0}
.tlink-title{font-size:14px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tlink-desc{font-size:14px;color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.tlink-url{font-size:12px;color:var(--text2);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ===== RIGHT SIDEBAR ===== */
.sidebar-right{width:350px;flex-shrink:0;display:flex;flex-direction:column;position:relative}
.sidebar-right-inner{position:sticky;top:0;height:100vh;overflow-y:auto;padding:0 16px 16px}
.sidebar-right-inner>*{margin-bottom:16px}
.sidebar-right-inner>:last-child{margin-bottom:0}
.sidebar-right-inner::-webkit-scrollbar{width:6px}
.sidebar-right-inner::-webkit-scrollbar-track{background:transparent}
.sidebar-right-inner::-webkit-scrollbar-thumb{background:var(--bg4);border-radius:3px}
.search-box{padding:12px 16px 8px;z-index:5}
.sbw{display:flex;align-items:center;background:var(--bg2);border-radius:var(--r);border:1px solid transparent;padding:0 16px;gap:12px;transition:border-color .2s,background .2s}
.sbw:focus-within{background:var(--bg);border-color:var(--accent)}
.sbw svg{width:18px;height:18px;fill:var(--text2);flex-shrink:0}
.sin{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:15px;padding:12px 0;font-family:inherit}
.sin::placeholder{color:var(--text2)}
.widget{background:var(--bg2);border-radius:16px}
.wt{font-size:20px;font-weight:800;padding:12px 16px}
.trend-item{padding:12px 16px;cursor:pointer;transition:background .2s;border-bottom:1px solid var(--border)}
.trend-item:last-child{border-bottom:none}
.trend-item:hover{background:rgba(231,233,234,.06)}
.tm{color:var(--text2);font-size:13px}
.tn2{font-weight:700;font-size:15px;margin:2px 0}
.tc{color:var(--text2);font-size:13px}
.fi{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer;transition:background .2s}
.fi:hover{background:rgba(231,233,234,.06)}
.fi+.fi{border-top:1px solid var(--border)}
.fa{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;color:#fff;flex-shrink:0;overflow:hidden}
.fa img{width:100%;height:100%;object-fit:cover}
.fi-info{flex:1;min-width:0}
.fi-name{font-weight:700;font-size:15px;display:flex;align-items:center;gap:4px}
.fi-handle{color:var(--text2);font-size:13px}
.fbtn{background:var(--text);color:var(--bg);border-radius:var(--r);padding:7px 18px;font-size:14px;font-weight:700;cursor:pointer;flex-shrink:0;transition:background .2s}
.fbtn:hover{background:#d7dbdc}
.fbtn.following{background:transparent;color:var(--text);border:1px solid var(--border)}
.fbtn.following:hover{background:rgba(223,27,27,.1);color:#f4212e;border-color:#f4212e}
.show-more{padding:16px;color:var(--accent);font-size:15px;cursor:pointer;display:block;transition:background .2s}
.show-more:hover{background:rgba(231,233,234,.05)}
.footer-links{display:flex;flex-wrap:wrap;padding:12px 16px 24px;font-size:13px;color:var(--text2);line-height:1.8;row-gap:2px}
.footer-links a{color:var(--text2);text-decoration:none;display:inline-flex;align-items:center;white-space:nowrap}
.footer-links a:not(:last-child)::after{content:"·";margin:0 4px;color:var(--text2);text-decoration:none;pointer-events:none}
.footer-links a:hover{text-decoration:underline}
.footer-copy{display:block;width:100%;margin-top:2px;color:var(--text2);font-size:13px}

/* ===== PREMIUM CARD ===== */
.prem-card{background:linear-gradient(135deg,#1d3a5f 0%,#0f212e 100%);border-radius:16px;padding:16px;cursor:pointer;transition:transform .2s,box-shadow .2s;position:relative;overflow:hidden}
.prem-card::before{content:'';position:absolute;top:-20px;right:-20px;width:80px;height:80px;background:rgba(29,155,240,.15);border-radius:50%}
.prem-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(29,155,240,.15)}
.prem-icon{margin-bottom:10px;color:rgba(255,255,255,.9)}
.prem-title{font-size:18px;font-weight:800;color:#fff;margin-bottom:6px}
.prem-desc{font-size:14px;color:rgba(255,255,255,.65);line-height:1.5;margin-bottom:12px}
.prem-tags{display:flex;gap:6px;margin-bottom:12px}
.prem-tag{background:rgba(29,155,240,.25);color:var(--accent);font-size:12px;font-weight:700;padding:3px 10px;border-radius:9999px}
.prem-cta{background:var(--accent);color:#fff;border-radius:9999px;padding:9px 20px;font-size:15px;font-weight:700;display:inline-block;text-align:center;transition:background .2s}
.prem-cta:hover{background:var(--ah)}

/* ===== TREND TABS ===== */
.trend-tabs{display:flex;padding:0 4px;margin-bottom:4px;border-bottom:1px solid var(--border)}
.trend-tab{flex:1;padding:10px 0;text-align:center;font-size:13px;font-weight:500;color:var(--text2);cursor:pointer;position:relative;transition:color .2s}
.trend-tab.active{color:var(--text);font-weight:700}
.trend-tab.active::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--accent);border-radius:3px 3px 0 0}
.trend-tab:hover{color:var(--text);background:rgba(231,233,234,.05)}

/* ===== FI META ===== */
.fi-meta{color:var(--text2);font-size:13px;margin-top:2px}

/* ===== TOPIC PILLS ===== */
.topic-pill-row{display:flex;flex-direction:column}
.topic-pill{display:flex;align-items:center;gap:10px;padding:12px 16px;cursor:pointer;transition:background .2s;border-bottom:1px solid var(--border)}
.topic-pill:last-child{border-bottom:none}
.topic-pill:hover{background:rgba(231,233,234,.06)}
.tp-icon{font-size:20px;width:32px;text-align:center;flex-shrink:0}
.tp-info{flex:1;min-width:0}
.tp-name{font-size:14px;font-weight:600;margin-bottom:1px}
.tp-count{color:var(--text2);font-size:12px}
.tp-btn{background:transparent;color:var(--text);border:1px solid var(--border);border-radius:9999px;padding:5px 14px;font-size:13px;font-weight:600;cursor:pointer;flex-shrink:0;transition:all .2s}
.tp-btn:hover{background:var(--text);color:var(--bg)}

/* ===== PAGE VIEWS ===== */
.page{display:none;min-height:100vh}
.page.active{display:block}

/* ===== AUTH PAGE ===== */
.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}
#authPage.active{display:flex}
.auth-card{width:400px;max-width:95vw;padding:32px}
.auth-logo{font-size:32px;font-weight:900;text-align:center;margin-bottom:32px}
.auth-title{font-size:28px;font-weight:800;margin-bottom:8px}
.auth-sub{color:var(--text2);font-size:15px;margin-bottom:32px}
.auth-inputs{display:flex;flex-direction:column;gap:16px}
.ail{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:16px;font-size:15px;transition:border-color .2s}
.ail:focus-within{border-color:var(--accent)}
.ail label{display:block;font-size:13px;color:var(--text2);margin-bottom:4px;font-weight:600}
.ail input{width:100%;background:transparent;border:none;outline:none;color:var(--text);font-size:15px;font-family:inherit;padding:4px 0}
.abtn{background:var(--text);color:var(--bg);border-radius:var(--r);padding:14px;width:100%;font-size:17px;font-weight:700;cursor:pointer;margin-top:8px;transition:opacity .2s}
.abtn:hover{opacity:.85}
.auth-divider{display:flex;align-items:center;gap:12px;margin:24px 0;color:var(--text2);font-size:14px}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.auth-switch{text-align:center;color:var(--accent);font-size:15px;cursor:pointer;margin-top:16px}
.auth-switch:hover{text-decoration:underline}
.auth-err{color:#f4212e;font-size:13px;margin-top:8px;display:none}

/* ===== PROFILE PAGE ===== */
.profile-header{position:relative}
.profile-cover{height:200px;background:linear-gradient(135deg,#1d9bf0,#f5576c,#a855f7);position:relative;cursor:pointer}
.profile-avatar-wrap{position:relative;height:0}
.profile-avatar{width:133px;height:133px;border-radius:50%;border:4px solid var(--bg);background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-size:48px;font-weight:900;color:#fff;position:absolute;top:-66px;left:16px;cursor:pointer;z-index:2}
.profile-edit-btn{position:absolute;top:12px;right:16px;background:transparent;color:var(--text);border:1px solid var(--border);border-radius:9999px;padding:7px 18px;font-size:14px;font-weight:700;cursor:pointer;transition:background .2s;z-index:3}
.profile-edit-btn:hover{background:rgba(231,233,234,.1)}
.profile-info{padding:16px;padding-top:72px}
.pi-row{display:flex;align-items:flex-start;justify-content:space-between}
.pi-name{font-size:20px;font-weight:800}
.pi-handle{color:var(--text2);font-size:15px;margin-top:2px}
.pi-bio{font-size:15px;margin-top:12px;line-height:1.5}
.pi-meta{display:flex;align-items:center;gap:16px;margin-top:12px;flex-wrap:wrap}
.pi-meta-item{display:flex;align-items:center;gap:4px;color:var(--text2);font-size:14px}
.pi-meta-item svg{width:18px;height:18px;fill:var(--text2)}
.pi-stats{display:flex;gap:20px;margin-top:12px}
.ps{font-size:14px;cursor:pointer;color:var(--text2)}
.ps:hover{text-decoration:underline}
.ps span{font-weight:700;color:var(--text)}
.profile-tabs{display:flex;border-bottom:1px solid var(--border);margin-top:16px;overflow-x:auto;scrollbar-width:none}
.profile-tabs::-webkit-scrollbar{display:none}
.profile-tab{flex:1;padding:16px;text-align:center;font-size:15px;color:var(--text2);cursor:pointer;position:relative;font-weight:500;transition:background .2s;white-space:nowrap;min-width:60px}
.profile-tab:hover{background:rgba(231,233,234,.05)}
.profile-tab.active{color:var(--text);font-weight:700}
.profile-tab.active::after{content:'';position:absolute;bottom:0;left:0;right:0;height:4px;background:var(--accent);border-radius:9999px 9999px 0 0}
.verif-banner{background:#1e3332;padding:12px 16px;border-radius:12px;margin:12px 16px;display:flex;align-items:flex-start;gap:12px}
.verif-banner-icon{width:40px;height:40px;border-radius:50%;background:#1e3332;border:1px solid #2f3336;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.verif-banner-icon svg{width:22px;height:22px;fill:var(--text)}
.verif-banner-content{flex:1}
.verif-banner-content h3{font-size:17px;font-weight:800;margin-bottom:4px;display:flex;align-items:center;gap:4px}
.verif-banner-content p{font-size:15px;color:var(--text2);line-height:1.5;margin-bottom:12px}
.verif-banner-btn{background:var(--text);color:var(--bg);border:none;border-radius:9999px;padding:10px 24px;font-size:15px;font-weight:700;cursor:pointer;transition:opacity .2s}
.verif-banner-btn:hover{opacity:.9}
.verif-banner-close{width:34px;height:34px;border-radius:50%;border:none;background:transparent;color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;flex-shrink:0}
.verif-banner-close:hover{background:rgba(231,233,234,.1);color:var(--text)}
.verif-banner-close svg{width:18px;height:18px;fill:currentColor}
.retweet-indicator{padding:0 16px 0 52px;font-size:13px;color:var(--text2);display:flex;align-items:center;gap:6px}

/* ===== POST DETAIL ===== */
.reply-input{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}
.ri-textarea{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:16px;resize:none;min-height:80px;padding:8px 0;font-family:inherit;line-height:1.6}
.ri-textarea::placeholder{color:var(--text2)}
.reply-item{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);transition:background .2s}
.reply-item:hover{background:var(--hover)}
.indent{border-left:2px solid var(--border);margin-left:20px;padding-left:0}
.thread-line{border-left:2px solid var(--accent);margin-left:20px}

/* ===== NOTIFICATIONS ===== */
.notif{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s;position:relative}
.notif:hover{background:var(--hover)}
.notif.unread::before{content:'';position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent)}
.notif-layout{display:flex;gap:12px;width:100%}
.notif-icon-col{width:40px;display:flex;flex-direction:column;align-items:center;flex-shrink:0;gap:4px}
.nicon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nicon svg{width:22px;height:22px}
.nicon.like svg{fill:var(--pink)}
.nicon.follow svg{fill:var(--accent)}
.nicon.mention svg,.nicon.reply svg{fill:#a855f7}
.nicon.retweet svg{fill:var(--green)}
.notif-avatars{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:4px}
.notif-avatars .ta{width:32px;height:32px;font-size:14px}
.notif-avatars-multi{display:flex;flex-wrap:wrap;gap:2px;justify-content:center;max-width:40px}
.notif-avatars-multi .ta{width:18px;height:18px;font-size:10px;border-radius:50%}
.nbody{flex:1;min-width:0}
.ntext{font-size:15px;margin-top:2px;line-height:1.5}
.ntext strong{font-weight:700}
.ntext a{color:var(--accent)}
.ntext a:hover{text-decoration:underline}
.ntime{color:var(--text2);font-size:13px;margin-top:2px}
.ntarget{font-size:14px;color:var(--text2);margin-top:4px;line-height:1.5}
.notif-more{position:absolute;top:8px;right:12px;color:var(--text2);cursor:pointer;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background .2s;background:transparent;border:none}
.notif-more:hover{background:rgba(29,155,240,.1);color:var(--accent)}
.notif-more svg{width:18px;height:18px;fill:currentColor}

/* Push notification promo */
.push-notif-card{padding:16px;border-bottom:1px solid var(--border);position:relative}
.push-notif-card h3{font-size:17px;font-weight:800;margin-bottom:4px}
.push-notif-card p{font-size:15px;color:var(--text2);line-height:1.5;margin-bottom:12px}
.push-notif-close{position:absolute;top:12px;right:12px;width:32px;height:32px;border-radius:50%;border:none;background:transparent;color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.push-notif-close:hover{background:rgba(231,233,234,.1);color:var(--text)}
.push-notif-close svg{width:20px;height:20px;fill:currentColor}
.push-notif-btn{background:var(--text);color:var(--bg);border:none;border-radius:9999px;padding:10px 24px;font-size:15px;font-weight:700;cursor:pointer;transition:opacity .2s}
.push-notif-btn:hover{opacity:.85}

/* ===== MESSAGES ===== */
.msg-layout{display:flex;height:100vh}
.msg-list{flex:1;border-right:1px solid var(--border);overflow-y:auto;min-width:350px}
.msg-list-header{padding:16px;border-bottom:1px solid var(--border);font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:space-between}
.msg-search{padding:8px 12px;border-bottom:1px solid var(--border)}
.msg-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s}
.msg-item:hover{background:var(--hover)}
.msg-item.active{background:var(--bg2)}
.msg-av{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;color:#fff;flex-shrink:0;position:relative}
.msg-av.online::after{content:'';position:absolute;bottom:0;right:0;width:12px;height:12px;background:var(--green);border:3px solid var(--bg);border-radius:50%}
.msg-av.offline::after{content:'';position:absolute;bottom:0;right:0;width:10px;height:10px;background:var(--bg4);border:2px solid var(--bg);border-radius:50%}
.msg-info{flex:1;min-width:0}
.msg-name{font-weight:700;font-size:15px;display:flex;justify-content:space-between;align-items:center}
.msg-time{font-size:12px;color:var(--text2)}
.msg-preview{font-size:14px;color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.msg-unread{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}
.msg-chat{flex:1;display:flex;flex-direction:column;min-width:0}
.msg-chat-header{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}
.msg-chat-name{font-weight:700;font-size:16px;flex:1;display:flex;flex-direction:column}
.msg-chat-name span{font-weight:400;font-size:13px;color:var(--text2)}
.chat-online{font-size:12px;color:var(--green);display:flex;align-items:center;gap:4px}
.chat-online::before{content:'';width:8px;height:8px;background:var(--green);border-radius:50%}
.chat-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}
.chat-bubble{max-width:70%;padding:10px 16px;border-radius:18px;font-size:15px;line-height:1.5;word-break:break-word}
.chat-bubble.sent{background:var(--accent);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.chat-bubble.received{background:var(--bg2);align-self:flex-start;border-bottom-left-radius:4px}
.chat-time{font-size:11px;color:var(--text2);margin-top:2px;text-align:right}
.chat-time.seen{color:var(--accent)}
.chat-date{text-align:center;font-size:12px;color:var(--text2);margin:12px 0;padding:4px 12px;background:var(--bg2);border-radius:12px;display:inline-block;align-self:center}
.chat-typing{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg2);border-radius:16px;align-self:flex-start;max-width:80px}
.chat-typing-dots{display:flex;gap:4px}
.chat-typing-dots span{width:8px;height:8px;background:var(--text2);border-radius:50%;animation:typingBounce 1.4s infinite}
.chat-typing-dots span:nth-child(2){animation-delay:.2s}
.chat-typing-dots span:nth-child(3){animation-delay:.4s}
@keyframes typingBounce{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-6px)}}
.chat-tools{display:flex;gap:4px}
.chat-tool{width:32px;height:32px;border-radius:50%;border:none;background:transparent;color:var(--accent);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.chat-tool:hover{background:rgba(29,155,240,.1)}
.chat-tool svg{width:18px;height:18px;fill:currentColor}
/* 私信聊天内的 emoji picker 覆盖 */
.msg-chat .emoji-picker{display:none;position:absolute;bottom:60px;left:16px;background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:8px;flex-wrap:wrap;gap:4px;max-width:280px;z-index:10}
.msg-chat .emoji-picker.show{display:flex}
.msg-chat .emoji-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;font-size:18px;border-radius:6px;border:none;background:transparent;cursor:pointer;transition:background .2s}
.msg-chat .emoji-btn:hover{background:var(--bg3)}

/* ===== EXPLORE ===== */
.explore-search{padding:12px 16px;border-bottom:1px solid var(--border)}
.es-input{display:flex;align-items:center;background:var(--bg2);border-radius:var(--r);padding:0 16px;gap:12px}
.es-input svg{width:18px;height:18px;fill:var(--text2)}
.es-input input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:15px;padding:12px 0;font-family:inherit}
.es-input input::placeholder{color:var(--text2)}
.explore-tabs{position:sticky;top:60px;background:rgba(0,0,0,.9);backdrop-filter:blur(12px);z-index:9;border-bottom:1px solid var(--border)}
.explore-tabs-inner{display:flex}
.explore-tab{flex:1;padding:16px 0;text-align:center;font-size:15px;font-weight:500;color:var(--text2);cursor:pointer;position:relative;transition:color .2s,background .2s}
.explore-tab:hover{background:rgba(231,233,234,.05)}
.explore-tab.active{color:var(--text);font-weight:700}
.explore-tab.active::after{content:'';position:absolute;bottom:0;left:0;right:0;height:4px;background:var(--accent);border-radius:9999px 9999px 0 0}
.explore-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px;padding:2px}
.explore-grid-item{position:relative;cursor:pointer;overflow:hidden;border-radius:0}
.explore-grid-item:first-child{grid-column:1/-1}
.ei-img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;min-height:120px;transition:opacity .2s}
.explore-grid-item:first-child .ei-img{aspect-ratio:16/7}
.ei-overlay{position:absolute;inset:0;background:rgba(0,0,0,.3);opacity:0;transition:opacity .2s;display:flex;align-items:flex-end;padding:12px;gap:16px;color:#fff;font-size:14px;font-weight:700}
.explore-grid-item:hover .ei-overlay{opacity:1}
.ei-item{position:relative;overflow:hidden;border-radius:0}
.ei-item:first-child{grid-column:1/-1}

/* Explore trending list */
.explore-trend-list{display:flex;flex-direction:column}
.explore-trend-item{display:flex;align-items:flex-start;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s;position:relative}
.explore-trend-item:hover{background:var(--hover)}
.explore-trend-info{flex:1;min-width:0;padding-right:8px}
.explore-trend-cat{color:var(--text2);font-size:13px;margin-bottom:2px}
.explore-trend-name{font-weight:700;font-size:15px;line-height:1.4}
.explore-trend-more{width:34px;height:34px;border-radius:50%;border:none;background:transparent;color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;flex-shrink:0;margin-top:-4px}
.explore-trend-more:hover{background:rgba(29,155,240,.1);color:var(--accent)}
.explore-trend-more svg{width:18px;height:18px;fill:currentColor}

/* ===== SETTINGS ===== */
.settings-list{max-width:600px;margin:0 auto;padding:16px}
.settings-section{margin-bottom:32px}
.settings-section-title{font-size:13px;font-weight:700;color:var(--text2);padding:8px 0;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.settings-item{display:flex;align-items:center;justify-content:space-between;padding:16px;background:var(--bg2);border-radius:12px;margin-bottom:8px;cursor:pointer;transition:background .2s}
.settings-item:hover{background:var(--bg3)}
.settings-item-info h3{font-size:16px;font-weight:600}
.settings-item-info p{font-size:13px;color:var(--text2);margin-top:2px}
.settings-toggle{width:44px;height:24px;border-radius:12px;background:var(--border);position:relative;cursor:pointer;transition:background .2s;border:none}
.settings-toggle.on{background:var(--accent)}
.settings-toggle::after{content:'';position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .2s}
.settings-toggle.on::after{transform:translateX(20px)}
.theme-options{display:flex;gap:8px;padding:8px 0}
.theme-opt{width:48px;height:48px;border-radius:12px;cursor:pointer;border:2px solid transparent;transition:border-color .2s}
.theme-opt.active{border-color:var(--accent)}
.theme-opt.dark{background:#000;border:2px solid var(--border)}
.theme-opt.light{background:#fff;border:2px solid #ccc}
.theme-opt.dim{background:#15202b;border:2px solid var(--border)}

/* ===== MODAL / DROPDOWN ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:1000;display:none;align-items:center;justify-content:center}
.modal-overlay.active{display:flex}
.modal{background:var(--bg2);border-radius:20px;width:90%;max-width:560px;max-height:85vh;overflow:hidden;display:flex;flex-direction:column}
.modal-header{display:flex;align-items:center;gap:16px;padding:12px 16px;border-bottom:1px solid var(--border)}
.modal-close{width:36px;height:36px;border-radius:50%;background:transparent;border:none;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center;transition:background .2s}
.modal-close:hover{background:rgba(231,233,234,.1)}
.modal-close svg{width:20px;height:20px;fill:var(--text)}
.modal-title{font-size:17px;font-weight:700;flex:1}
.modal-body{flex:1;overflow-y:auto;padding:16px}
.modal-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}
.modal-btn{padding:8px 20px;border-radius:var(--r);font-size:15px;font-weight:700;cursor:pointer;border:1px solid var(--border);background:transparent;color:var(--text);transition:all .2s}
.modal-btn:hover{background:rgba(231,233,234,.1)}
.modal-btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.modal-btn.primary:hover{background:var(--ah)}

/* Dropdown menu */
.dropdown{position:absolute;background:var(--bg2);border:1px solid var(--border);border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,.3);z-index:100;min-width:180px;overflow:hidden;display:none}
.dropdown.active{display:block}
.d-item{padding:12px 16px;font-size:15px;cursor:pointer;display:flex;align-items:center;gap:12px;transition:background .2s}
.d-item:hover{background:rgba(231,233,234,.05)}
.d-item svg{width:18px;height:18px;fill:var(--text)}
.d-item.danger:hover{background:rgba(249,24,128,.1);color:var(--pink)}
.d-item.danger:hover svg{fill:var(--pink)}
.d-divider{height:1px;background:var(--border);margin:4px 0}

/* Emoji picker */
.emoji-picker{position:absolute;background:var(--bg2);border:1px solid var(--border);border-radius:16px;padding:12px;z-index:200;display:none;width:300px;max-height:240px;overflow-y:auto;flex-wrap:wrap;gap:4px}
.emoji-picker.active{display:flex}
.emoji-btn{font-size:22px;cursor:pointer;padding:4px;border-radius:6px;transition:background .2s}
.emoji-btn:hover{background:rgba(231,233,234,.1);transform:scale(1.2)}

/* GIF picker */
.gif-picker{position:absolute;background:var(--bg2);border:1px solid var(--border);border-radius:16px;padding:12px;z-index:200;display:none;width:320px;max-height:320px;overflow-y:auto;flex-direction:column;gap:8px}
.gif-picker.active{display:flex}
.gif-search{width:100%;padding:8px 12px;border-radius:9999px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:14px;outline:none}
.gif-search:focus{border-color:var(--accent)}
.gif-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.gif-item{border-radius:12px;overflow:hidden;cursor:pointer;position:relative;aspect-ratio:16/9;background:var(--bg3);display:flex;align-items:center;justify-content:center;transition:opacity .2s}
.gif-item:hover{opacity:.85}
.gif-item-label{position:absolute;bottom:0;left:0;right:0;padding:4px 8px;font-size:11px;font-weight:700;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.7));text-align:center}
.gif-item img{width:100%;height:100%;object-fit:cover}

/* ===== LIKERS LIST ===== */
.likers-list{display:flex;flex-direction:column}
.liker-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s}
.liker-item:hover{background:var(--hover)}

/* ===== EMPTY STATE ===== */
.empty-state{padding:60px 20px;text-align:center}
.empty-state svg{width:48px;height:48px;fill:var(--text2);margin-bottom:16px}
.empty-state h3{font-size:20px;font-weight:800;margin-bottom:8px}
.empty-state p{color:var(--text2);font-size:15px}

/* ===== LOADING ===== */
.loading{padding:40px;text-align:center;color:var(--text2)}

/* ===== SHARE MODAL ===== */
.share-url{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:12px 16px;font-size:14px;color:var(--text2);margin-top:12px;overflow:hidden}
.share-url span{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.copy-btn{background:var(--accent);color:#fff;border:none;border-radius:var(--r);padding:6px 16px;font-size:13px;font-weight:700;cursor:pointer;white-space:nowrap;flex-shrink:0;transition:background .2s}
.copy-btn:hover{background:var(--ah)}

/* ===== LOAD MORE / PAGINATION ===== */
.load-more-container{padding:20px;text-align:center}
.load-more-btn{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--accent);border:1px solid var(--border);border-radius:var(--r);padding:10px 24px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}
.load-more-btn:hover{background:rgba(29,155,240,.1);border-color:var(--accent)}
.load-more-btn:disabled{opacity:.5;cursor:default;pointer-events:none}
.load-spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-more{padding:16px;text-align:center;color:var(--text2);font-size:14px;display:flex;align-items:center;justify-content:center;gap:8px}

/* ===== FLOATING POST BUTTON (mobile) ===== */
.float-post-btn{position:fixed;bottom:20px;right:20px;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(29,155,240,.4);z-index:100;transition:background .2s}
.float-post-btn:hover{background:var(--ah)}
.float-post-btn svg{width:28px;height:28px;fill:#fff}

/* ===== MOBILE BOTTOM NAV ===== */
.mobile-bottom-nav{display:none}

/* ===== RESPONSIVE ===== */
@media(max-width:1100px){.sidebar-right{display:none}}
@media(max-width:700px){
  .sidebar{width:68px;padding:0 4px}
  .nav-label,.post-btn,.un,.uh,.dots{display:none !important}
  .nav-item{justify-content:center;padding:12px}
  .logo{margin:0 auto}
  .user-menu{justify-content:center}
  .main{max-width:100%;border-right:none;padding-bottom:72px}
  .layout{gap:0}
  .profile-avatar{width:100px;height:100px;top:-50px}
  .profile-info{padding-top:56px}
  .msg-layout{flex-direction:column}
  .msg-list{min-width:100%;border-right:none;border-bottom:1px solid var(--border);max-height:40vh}
  .msg-chat{flex:1}
  .explore-grid{grid-template-columns:1fr}
  .explore-grid-item:first-child{grid-column:1}
  .ei-img{aspect-ratio:4/3 !important}
  .float-post-btn{display:flex;bottom:80px}
  /* 移动端底部导航栏 */
  .mobile-bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:var(--bg);border-top:1px solid var(--border);z-index:100;padding:8px 0;padding-bottom:env(safe-area-inset-bottom,8px)}
  .mbn-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px 0;cursor:pointer;color:var(--text2);font-size:11px;transition:color .2s}
  .mbn-item svg{width:24px;height:24px;fill:currentColor}
  .mbn-item.active,.mbn-item:hover{color:var(--accent)}
  /* auth 页面适配 */
  .auth-card{width:100%;max-width:100vw;padding:24px 16px}
  /* 设置页和帮助页单列 */
  .settings-item{flex-direction:column;align-items:flex-start;gap:8px}
  /* 帮助中心网格单列 */
  .help-grid{grid-template-columns:1fr !important}
}

/* User menu */
.user-menu-text{flex:1;min-width:0;overflow:hidden}
.user-menu-item{display:flex;align-items:center;gap:12px;padding:12px 16px;font-size:15px;cursor:pointer;transition:background .2s}
.user-menu-item:hover{background:rgba(231,233,234,.05)}
.user-menu-item svg{width:18px;height:18px;fill:var(--text)}
.user-menu-item.danger:hover{background:rgba(249,24,128,.1);color:var(--pink)}
.user-menu-item.danger:hover svg{fill:var(--pink)}
.user-menu-divider{height:1px;background:var(--border);margin:4px 0}
.user-menu-header{padding:12px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}
.user-menu-header-info{flex:1}
.user-menu-header-name{font-weight:700;font-size:15px}
.user-menu-header-handle{color:var(--text2);font-size:13px}
.user-menu-switch{color:var(--accent);font-size:13px;cursor:pointer;padding:8px 16px}
.user-menu-switch:hover{background:rgba(231,233,234,.05)}

/* ===== DARK/LIGHT THEME ===== */
.theme-light{--bg:#fff;--bg2:#f7f9f9;--bg3:#eff3f4;--bg4:#cfd9de;--text:#0f1419;--text2:#536471;--border:#eff3f4;--hover:#f7f9f9}
.theme-dim{--bg:#15202b;--bg2:#192734;--bg3:#22303c;--bg4:#2f3f50;--border:#2f3336;--hover:#192734}

/* ===== QUOTE RETWEET ===== */
.quote-tweet-card:hover{background:rgba(231,233,234,.05)!important}
.quote-preview-card{background:var(--bg2)}
.poll-option:hover{background:rgba(29,155,240,.04)!important}
.poll-option.voted{background:rgba(29,155,240,.03)}

/* ===== PROFILE REPLY ===== */
.reply-view .reply-to-line{font-size:13px;color:var(--text2);margin:2px 0 4px}
.reply-view .reply-to-line span{color:var(--accent)}
.quote-tweet-card.mini{padding:10px 12px;font-size:13px}
.quote-tweet-card.mini .av{width:24px;height:24px;font-size:12px;flex-shrink:0}
.poll-option.voted span:first-child{color:var(--text)}
.poll-card{transition:border-color .2s}

/* ===== RETWEET MENU ===== */
.rt-menu .d-item{font-size:15px}
.rt-menu .d-item svg{width:18px;height:18px}

/* ===== MEDIA GRIDS ===== */
.tmedia{margin-top:12px;border-radius:16px;overflow:hidden;cursor:pointer}
.tmedia>div{transition:filter .2s}
.tmedia:hover>div{filter:brightness(0.9)}

/* ===== POST DETAIL REPLY FIX ===== */
.reply-item{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}
.reply-item:hover{background:var(--hover)}
.reply-item .ta{width:36px;height:36px;font-size:14px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:700;color:#fff}

/* ===== EMOJI PICKER DARK FIX ===== */
#quoteModal .ri-textarea{min-height:80px;resize:none;margin-bottom:8px}
#quoteModal .modal-body{padding-bottom:16px}

/* ===== DANGER ITEM ===== */
.d-item.danger{color:var(--pink)}
.d-item.danger svg{fill:var(--pink)!important}
.d-item.danger:hover{background:rgba(249,24,128,.1)!important}

/* ===== AUTH MODAL ===== */
.auth-tabs{display:flex;margin-bottom:24px;border-bottom:1px solid var(--border)}
.auth-tab{flex:1;padding:12px 0;font-size:15px;font-weight:500;background:transparent;border:none;color:var(--text2);cursor:pointer;position:relative;transition:color .2s}
.auth-tab.active{color:var(--text);font-weight:700;border-bottom:3px solid var(--accent)}
.auth-tab:hover{color:var(--text)}
.ail{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:16px;font-size:15px;transition:border-color .2s;margin-bottom:12px}
.ail:focus-within{border-color:var(--accent)}
.ail label{display:block;font-size:13px;color:var(--text2);margin-bottom:4px;font-weight:600}
.ail input{width:100%;background:transparent;border:none;outline:none;color:var(--text);font-size:17px;font-family:inherit;padding:4px 0}
.ail input::placeholder{color:var(--text2)}
.abtn{background:var(--text);color:var(--bg);border-radius:var(--r);padding:14px;width:100%;font-size:17px;font-weight:700;cursor:pointer;margin-top:8px;transition:opacity .2s;border:none;font-family:inherit}
.abtn:hover{opacity:.85}
.abtn:disabled{opacity:.5;cursor:default}
.code-input:focus{border-color:var(--accent)!important;outline:none}
.auth-success{text-align:center;padding:32px 0}
.auth-err{color:#f4212e;font-size:13px;margin-bottom:8px;display:none}

/* ===== LOGIN PROMPT ===== */
.login-prompt-text{font-size:15px;color:var(--text2);margin-bottom:24px}

/* ===== TOAST ===== */
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(-8px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}