:root{--bg: #0f172a;--bg-elev: #1e293b;--bg-card: #16213a;--text: #e2e8f0;--text-dim: #94a3b8;--accent: #38bdf8;--accent-dim: #0ea5e9;--danger: #f87171;--chip-bg: #23324f;--radius: 12px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:16px;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}#root{max-width:640px;margin:0 auto;min-height:100vh;min-height:100dvh}button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}img{max-width:100%}.page{padding:calc(var(--safe-top) + 8px) 12px calc(var(--safe-bottom) + 90px)}.topbar{display:flex;align-items:center;gap:8px;padding:8px 0 12px}.topbar-title{font-weight:600;font-size:17px}.btn{background:var(--bg-elev);border:1px solid #2c3d5c;border-radius:999px;padding:6px 14px;font-size:14px;color:var(--text)}.btn--back{width:36px;height:36px;padding:0;font-size:18px;display:inline-flex;align-items:center;justify-content:center}.btn--primary{background:var(--accent-dim);border-color:var(--accent-dim);color:#fff;font-weight:600}.btn:disabled{opacity:.5;cursor:default}.tab-bar{position:sticky;top:var(--safe-top);z-index:10;display:flex;gap:6px;padding:8px 0;background:var(--bg)}.tab{padding:7px 16px;border-radius:999px;background:var(--bg-elev);color:var(--text-dim);font-size:14px}.tab--active{background:var(--accent-dim);color:#fff;font-weight:600}.tab-spacer{flex:1}.topic-list{display:flex;flex-direction:column;gap:8px}.topic-item{display:flex;gap:10px;align-items:flex-start;background:var(--bg-card);border-radius:var(--radius);padding:12px;cursor:pointer}.avatar{width:40px;height:40px;border-radius:8px;flex-shrink:0;background:var(--chip-bg)}.avatar--small{width:28px;height:28px;border-radius:6px}.avatar--large{width:56px;height:56px;border-radius:12px}.topic-main{flex:1;min-width:0}.topic-title{margin:0 0 4px;font-size:15.5px;line-height:1.4;font-weight:600}.topic-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-dim);flex-wrap:wrap}.node-chip{background:var(--chip-bg);color:var(--accent);border-radius:6px;padding:2px 8px;font-size:12px}.topic-excerpt{margin:6px 0 0;font-size:13px;color:var(--text-dim);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.reply-count{background:var(--chip-bg);color:var(--accent);border-radius:8px;min-width:26px;height:22px;display:inline-flex;align-items:center;justify-content:center;font-size:12px;padding:0 6px;flex-shrink:0}.topic-detail{background:var(--bg-card);border-radius:var(--radius);padding:14px}.detail-title{margin:0 0 8px;font-size:19px;line-height:1.4}.rich-content{font-size:15px;line-height:1.7;word-break:break-word;margin-top:12px}.rich-content img{border-radius:8px}.rich-content pre{overflow-x:auto;background:var(--bg);padding:10px;border-radius:8px;font-size:13px}.rich-content a{color:var(--accent)}.rich-content--reply{margin-top:4px;font-size:14px}.replies-section{margin-top:14px}.section-title{font-size:14px;color:var(--text-dim);font-weight:600;margin:0 0 8px}.reply-item{display:flex;gap:8px;background:var(--bg-card);border-radius:var(--radius);padding:10px 12px;margin-bottom:8px}.reply-body{flex:1;min-width:0}.reply-meta{display:flex;gap:8px;font-size:12px;color:var(--text-dim)}.reply-composer{position:fixed;left:0;right:0;bottom:0;max-width:640px;margin:0 auto;padding:10px 12px calc(var(--safe-bottom) + 10px);background:var(--bg-elev);border-top:1px solid #2c3d5c;display:flex;flex-direction:column;gap:8px}.reply-composer textarea{width:100%;background:var(--bg);color:var(--text);border:1px solid #2c3d5c;border-radius:10px;padding:8px;font:inherit;font-size:14px;resize:vertical}.reply-composer .btn--primary{align-self:flex-end}.status-block{display:flex;flex-direction:column;align-items:center;gap:10px;padding:40px 16px;color:var(--text-dim);text-align:center}.status-block--error{color:var(--danger)}.spinner{width:22px;height:22px;border:3px solid var(--chip-bg);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.offline-banner{background:#3b2f14;color:#fbbf24;border-radius:8px;padding:8px 12px;font-size:13px;margin-bottom:8px}.hint{color:var(--text-dim);font-size:13px;margin:4px 0}.pager{display:flex;align-items:center;justify-content:center;gap:14px;padding:16px 0}.pager-num{font-size:13px;color:var(--text-dim)}.account-card{background:var(--bg-card);border-radius:var(--radius);padding:16px}.member-row{display:flex;align-items:center;gap:12px;margin-bottom:14px}.member-name{margin:0;font-weight:600;font-size:17px}.budget-box{border-top:1px solid #2c3d5c;padding-top:12px}.login-box textarea.pat-input{width:100%;background:var(--bg);color:var(--text);border:1px solid #2c3d5c;border-radius:10px;padding:8px;font:inherit;font-size:13px;resize:vertical;margin:8px 0}.login-box .btn--primary{margin-top:4px}.budget-bar{height:8px;background:var(--chip-bg);border-radius:999px;overflow:hidden;margin:8px 0}.budget-bar-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .4s ease}