:root{color-scheme:dark;--bg: #0a0a0c;--panel: #121214;--panel-elevated: #1c1c1e;--border: #2c2c2e;--text: #f5f5f7;--muted: #8e8e93;--accent: #0a84ff;--accent-soft: rgba(10, 132, 255, .14);--sent: #0a84ff;--received: #3a3a3c;--danger: #ff453a;--success: #30d158;--sidebar-width: 340px;--tapback-mine: #0a84ff;--tapback-theirs: #636366;--tapback-ring: #1c1c1e;font-family:SF Pro Text,Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.45;font-weight:400;color:var(--text);background:var(--bg)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{min-width:320px}button,input,textarea{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) 1fr;height:100%;background:radial-gradient(ellipse at top left,rgba(40,60,100,.25),transparent 50%),radial-gradient(ellipse at bottom right,rgba(20,30,50,.4),transparent 45%),var(--bg)}@media(max-width:900px){.app-shell{grid-template-columns:1fr}.app-shell.show-thread 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gate-dot-blink{0%,45%{opacity:1}50%,95%{opacity:.15}}.gate-title{margin:0;font-size:clamp(2.4rem,7vw,3.6rem);font-weight:500;letter-spacing:-.04em;line-height:1;display:flex;justify-content:center;gap:.28em;flex-wrap:wrap}.gate-welcome .gate-title-word{display:inline-block;animation:gate-word-rise .85s cubic-bezier(.16,1,.3,1) both}.gate-welcome .gate-title-word:nth-child(1){animation-delay:.2s}.gate-welcome .gate-title-word:nth-child(2){animation-delay:.32s}@keyframes gate-word-rise{0%{opacity:0;transform:translateY(14px);filter:blur(4px)}to{opacity:1;transform:translateY(0);filter:blur(0)}}.gate-title-lock{display:block;color:#ff3b30;animation:gate-lock-shake .5s cubic-bezier(.36,.07,.19,.97) .12s both}@keyframes gate-lock-shake{0%,to{transform:translate(0)}20%{transform:translate(-3px)}40%{transform:translate(3px)}60%{transform:translate(-2px)}80%{transform:translate(2px)}}.gate-tagline{margin:14px 0 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