:root{--bg:#0a0a0f;--bg2:#12121a;--card:#1a1a2e;--card2:#1e1e36;--border:#2a2a4a;--border2:#3a3a5a;--text:#e8e8f0;--text2:#c0c0d0;--muted:#7878a0;--accent:#ff6b6b;--accent2:#ff8a8a;--gold:#ffd93d;--gold2:#ffe066;--success:#4ade80;--warn:#fb923c;--error:#f87171;--info:#60a5fa;--radius:12px;--radius-sm:8px;--radius-xs:6px;--shadow:0 4px 24px rgba(0,0,0,.3);--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans SC",sans-serif}
[data-theme="light"]{--bg:#f7f8fc;--bg2:#fff;--card:#fff;--card2:#f0f2f8;--border:#e2e5ed;--border2:#d0d5e0;--text:#1a1a2e;--text2:#333;--muted:#6b7280;--accent:#e54848;--gold:#d4a017;--shadow:0 4px 24px rgba(0,0,0,.08)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;transition:background .3s,color .3s;line-height:1.6;-webkit-font-smoothing:antialiased}
.header{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);padding:0;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:rgba(26,26,46,.92)}
[data-theme="light"] .header{background:rgba(255,255,255,.95)}
.header-inner{max-width:960px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px}.brand-icon{font-size:1.6em}
.brand-text h1{font-size:1.15em;font-weight:700;color:var(--accent);line-height:1.2}
.brand-text h1 span{color:var(--gold)}.brand-tag{font-size:.65em;color:var(--muted);margin-top:1px}
.header-actions{display:flex;align-items:center;gap:8px}
.theme-btn{background:var(--card);border:1px solid var(--border);color:var(--text);padding:6px 14px;border-radius:20px;cursor:pointer;font-size:.82em;transition:all .2s;display:flex;align-items:center;gap:5px}
.theme-btn:hover{border-color:var(--accent);transform:translateY(-1px)}.theme-btn:active{transform:translateY(0)}
.search-section{background:var(--bg2);padding:20px 0;border-bottom:1px solid var(--border)}
.search-box{max-width:640px;margin:0 auto;padding:0 20px;position:relative}
.search-box input{width:100%;padding:13px 48px 13px 18px;border:2px solid var(--border);border-radius:var(--radius);background:var(--card);color:var(--text);font-size:.95em;outline:none;transition:all .25s;font-family:var(--font)}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,107,107,.15)}
.search-box input::placeholder{color:var(--muted)}
.search-btn{position:absolute;right:26px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);cursor:pointer;font-size:1.1em;padding:6px;transition:color .2s}
.search-btn:hover{color:var(--accent)}
.container{max-width:960px;margin:0 auto;padding:20px}
.stats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.stat{background:var(--card);padding:7px 13px;border-radius:var(--radius-sm);font-size:.78em;color:var(--muted);border:1px solid var(--border);display:flex;align-items:center;gap:4px}
.stat strong{color:var(--gold);font-weight:600}
.filters{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.filter-btn{padding:5px 13px;border:1px solid var(--border);border-radius:20px;background:transparent;color:var(--muted);cursor:pointer;font-size:.78em;transition:all .2s;white-space:nowrap}
.filter-btn:hover{border-color:var(--accent);color:var(--accent)}
.filter-btn.active{border-color:var(--accent);color:var(--accent);background:rgba(255,107,107,.08);font-weight:500}
.rec-section{background:linear-gradient(135deg,var(--card) 0%,var(--card2) 100%);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:20px;position:relative;overflow:hidden}
.rec-section::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--gold))}
.rec-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.rec-header h3{font-size:.88em;color:var(--gold);display:flex;align-items:center;gap:6px;font-weight:600}
.rec-toggle{background:none;border:1px solid var(--border);color:var(--muted);padding:3px 10px;border-radius:var(--radius-xs);cursor:pointer;font-size:.75em;transition:all .2s}
.rec-toggle:hover{border-color:var(--gold);color:var(--gold)}
.rec-text{color:var(--text2);font-size:.84em;line-height:1.7;white-space:pre-line}
.rec-text.collapsed{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rec-articles{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.rec-chip{padding:4px 10px;background:rgba(255,217,61,.08);border:1px solid rgba(255,217,61,.2);border-radius:var(--radius-xs);font-size:.75em;color:var(--gold2);cursor:pointer;transition:all .2s}
.rec-chip:hover{background:rgba(255,217,61,.15)}
.ai-answer{background:linear-gradient(135deg,var(--card) 0%,var(--card2) 100%);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:20px;display:none;position:relative;overflow:hidden}
.ai-answer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--info),var(--accent))}
.ai-answer.show{display:block;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.ai-answer-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap;gap:8px}
.ai-answer-header h3{font-size:.88em;color:var(--info);display:flex;align-items:center;gap:6px;font-weight:600}
.ai-actions{display:flex;gap:6px}
.ai-action-btn{background:none;border:1px solid var(--border);color:var(--muted);padding:4px 10px;border-radius:var(--radius-xs);cursor:pointer;font-size:.75em;transition:all .2s;display:flex;align-items:center;gap:4px}
.ai-action-btn:hover{border-color:var(--info);color:var(--info)}
.ai-action-btn.copied{border-color:var(--success);color:var(--success)}
.ai-answer-body{color:var(--text2);line-height:1.7;font-size:.88em}
.ai-answer-body.collapsed{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.ai-answer-body p{margin-bottom:8px}.ai-answer-body p:last-child{margin-bottom:0}
.ref-links{margin-top:12px;display:flex;gap:6px;flex-wrap:wrap;padding-top:10px;border-top:1px solid var(--border)}
.ref-tag{font-size:.74em;color:var(--accent);background:rgba(255,107,107,.08);padding:3px 9px;border-radius:var(--radius-xs);cursor:pointer;transition:all .2s;border:1px solid rgba(255,107,107,.15)}
.ref-tag:hover{background:rgba(255,107,107,.15);transform:translateY(-1px)}
.skeleton{background:linear-gradient(90deg,var(--card) 25%,var(--border) 50%,var(--card) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.skeleton-card{padding:16px;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px}
.skeleton-title{height:18px;width:75%;margin-bottom:8px}.skeleton-meta{height:11px;width:30%;margin-bottom:8px}
.skeleton-line{height:12px;width:92%;margin-bottom:5px}.skeleton-line.short{width:55%}
.article-list{position:relative;min-height:200px}
.article-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;transition:all .2s;cursor:pointer}
.article-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-1px)}
.article-card:active{transform:translateY(0)}
.article-card h2{font-size:.95em;margin-bottom:6px;line-height:1.4;font-weight:500}
.article-card h2 a{color:var(--text);text-decoration:none;transition:color .2s}
.article-card h2 a:hover{color:var(--gold)}
.article-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:.74em;margin-bottom:8px}
.article-meta .source{color:var(--accent);font-weight:500}
.article-meta .score{color:var(--gold);font-size:.9em;margin-left:auto}
.article-summary{color:var(--text2);font-size:.84em;line-height:1.55;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-opinion{color:var(--muted);font-size:.8em;line-height:1.45;padding:7px 10px;background:rgba(255,217,61,.04);border-radius:var(--radius-xs);border-left:2px solid var(--gold);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pagination{display:flex;justify-content:center;gap:5px;margin-top:24px;flex-wrap:wrap}
.pagination button{padding:6px 13px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--card);color:var(--muted);cursor:pointer;font-size:.82em;transition:all .2s;min-width:36px;text-align:center}
.pagination button:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.pagination button.active{border-color:var(--gold);color:var(--gold);font-weight:500}
.pagination button:disabled{opacity:.4;cursor:not-allowed;transform:none}
.modal-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:100;justify-content:center;align-items:flex-start;padding:40px 15px;overflow-y:auto;backdrop-filter:blur(4px)}
.modal-overlay.show{display:flex}
.modal{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;max-width:680px;width:100%;position:relative;animation:slideUp .25s;box-shadow:0 20px 60px rgba(0,0,0,.4)}
@keyframes slideUp{from{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-close{position:absolute;top:14px;right:14px;background:var(--bg2);border:1px solid var(--border);color:var(--muted);width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:1.1em;display:flex;align-items:center;justify-content:center;transition:all .2s;line-height:1}
.modal-close:hover{border-color:var(--error);color:var(--error);transform:rotate(90deg)}
.modal h2{font-size:1.2em;margin-bottom:10px;color:var(--text);padding-right:40px;line-height:1.35;font-weight:600}
.modal .meta{color:var(--muted);font-size:.82em;margin-bottom:16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.modal .meta .source{color:var(--accent);font-weight:500}
.modal .summary{color:var(--text2);line-height:1.7;margin-bottom:16px;font-size:.92em;padding:14px;background:var(--bg2);border-radius:var(--radius-sm);border:1px solid var(--border)}
.modal .opinion{color:var(--text2);line-height:1.6;padding:12px 14px;background:rgba(255,217,61,.04);border-radius:var(--radius-sm);border-left:3px solid var(--gold);margin-bottom:16px;font-size:.9em}
.modal .opinion::before{content:"🦞 龙虾观点";display:block;font-size:.8em;color:var(--gold);margin-bottom:6px;font-weight:500}
.modal .read-original{display:inline-flex;align-items:center;gap:6px;padding:9px 20px;background:var(--accent);color:#fff;text-decoration:none;border-radius:var(--radius-sm);font-size:.88em;margin-top:8px;transition:all .2s;font-weight:500}
.modal .read-original:hover{opacity:.85;transform:translateY(-1px)}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--card);border:1px solid var(--border);color:var(--text);padding:10px 20px;border-radius:var(--radius);font-size:.85em;z-index:200;transition:transform .3s,opacity .3s;opacity:0;box-shadow:var(--shadow);display:flex;align-items:center;gap:8px;white-space:nowrap}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}
.toast.success{border-color:var(--success)}.toast.error{border-color:var(--error)}.toast.warn{border-color:var(--warn)}
.empty-state{text-align:center;padding:40px 20px;color:var(--muted)}
.empty-state .icon{font-size:2.5em;margin-bottom:12px;opacity:.5}
.empty-state p{font-size:.9em;margin-bottom:6px}
.footer{text-align:center;padding:30px 20px;color:var(--muted);font-size:.75em;border-top:1px solid var(--border);margin-top:40px}
.footer a{color:var(--accent);text-decoration:none}
.back-top{position:fixed;bottom:24px;right:24px;width:40px;height:40px;background:var(--card);border:1px solid var(--border);border-radius:50%;color:var(--muted);cursor:pointer;font-size:1.1em;display:flex;align-items:center;justify-content:center;transition:all .2s;z-index:40;box-shadow:var(--shadow);opacity:0;pointer-events:none}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
@media(max-width:640px){.header-inner{padding:10px 14px}.brand-text h1{font-size:1em}.container{padding:14px}.stat{padding:5px 9px;font-size:.72em}.article-card{padding:13px 14px}.article-card h2{font-size:.9em}.modal{padding:20px}.modal h2{font-size:1.05em}}

/* ===== 搜索框增强 ===== */
.search-box{position:relative}
.search-clear{position:absolute;right:52px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);cursor:pointer;font-size:.9em;padding:4px 6px;transition:color .2s;border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center}
.search-clear:hover{color:var(--error);background:rgba(248,113,113,.1)}
.search-history{position:absolute;top:100%;left:20px;right:20px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 32px rgba(0,0,0,.3);z-index:60;max-height:300px;overflow-y:auto;display:none}
.history-item{padding:9px 14px;font-size:.85em;color:var(--text2);cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .15s}
.history-item:hover{background:var(--bg2)}
.history-icon{font-size:.8em;opacity:.5}
.history-del{margin-left:auto;color:var(--muted);padding:2px 6px;border-radius:50%;font-size:1em;line-height:1}
.history-del:hover{color:var(--error);background:rgba(248,113,113,.1)}
.hot-searches{max-width:640px;margin:10px auto 0;padding:0 20px;display:none;flex-wrap:wrap;gap:6px}
.hot-tag{padding:3px 10px;background:var(--bg2);border:1px solid var(--border);border-radius:20px;font-size:.75em;color:var(--muted);cursor:pointer;transition:all .2s}
.hot-tag:hover{border-color:var(--gold);color:var(--gold)}

/* ===== 关键词高亮 ===== */
.kw-highlight{background:rgba(255,217,61,.2);color:var(--gold2);padding:1px 3px;border-radius:3px;font-weight:500}

/* ===== AI回答引用标注 ===== */
.ai-ref{font-size:.7em;color:var(--info);vertical-align:super;cursor:pointer;font-weight:600}
.ai-ref:hover{text-decoration:underline}

/* ===== 搜索加载动画 ===== */
.search-loading{display:flex;align-items:center;justify-content:center;gap:8px;padding:30px;color:var(--muted)}
.search-loading .dots{display:flex;gap:4px}
.search-loading .dot{width:8px;height:8px;background:var(--accent);border-radius:50%;animation:bounce 1.4s infinite}
.search-loading .dot:nth-child(2){animation-delay:.2s}
.search-loading .dot:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,80%,100%{transform:scale(.4);opacity:.4}40%{transform:scale(1);opacity:1}}

/* ===== 响应式搜索 ===== */
@media(max-width:640px){
  .search-history{left:14px;right:14px}
  .hot-searches{padding:0 14px}
}

/* ===== 搜索增强 ===== */
.s-clear{position:absolute;right:52px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);cursor:pointer;font-size:.9em;padding:4px 6px;border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center;transition:all .2s}
.s-clear:hover{color:var(--error);background:rgba(248,113,113,.1)}
.search-history{position:absolute;top:100%;left:20px;right:20px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 32px rgba(0,0,0,.3);z-index:60;max-height:280px;overflow-y:auto;display:none}
.hist-item{padding:9px 14px;font-size:.85em;color:var(--text2);cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .15s}
.hist-item:hover{background:var(--bg2)}
.h-ico{font-size:.8em;opacity:.5}
.h-del{margin-left:auto;color:var(--muted);padding:2px 6px;border-radius:50%;font-size:1em;line-height:1}
.h-del:hover{color:var(--error);background:rgba(248,113,113,.1)}
.hot-search{max-width:640px;margin:10px auto 0;padding:0 20px;display:none;flex-wrap:wrap;gap:6px}
.hot-tag{padding:3px 10px;background:var(--bg2);border:1px solid var(--border);border-radius:20px;font-size:.75em;color:var(--muted);cursor:pointer;transition:all .2s}
.hot-tag:hover{border-color:var(--gold);color:var(--gold)}

/* ===== 搜索加载动画 ===== */
.s-load{display:flex;align-items:center;justify-content:center;gap:10px;padding:30px;color:var(--muted)}
.s-load .dots{display:flex;gap:4px}
.s-load .dot{width:8px;height:8px;background:var(--accent);border-radius:50%;animation:bounce 1.4s infinite}
.s-load .dot:nth-child(2){animation-delay:.2s}
.s-load .dot:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,80%,100%{transform:scale(.4);opacity:.4}40%{transform:scale(1);opacity:1}}

/* ===== 关键词高亮 ===== */
.kw{background:rgba(255,217,61,.2);color:var(--gold2);padding:1px 3px;border-radius:3px;font-weight:500}

/* ===== AI引用标注 ===== */
.ai-ref{font-size:.7em;color:var(--info);vertical-align:super;cursor:pointer;font-weight:600}
.ai-ref:hover{text-decoration:underline}

/* ===== 文章卡片增强 ===== */
.card-hd{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}
.card-hd h2{flex:1}
.card.read{opacity:.65}
.card.read h2 a{color:var(--muted)}

/* ===== 收藏按钮 ===== */
.fav-btn{background:none;border:none;color:var(--muted);cursor:pointer;font-size:1.1em;padding:4px 6px;border-radius:var(--radius-xs);transition:all .2s;line-height:1}
.fav-btn:hover{color:var(--gold);background:rgba(255,217,61,.1)}
.fav-btn.on{color:var(--gold)}

/* ===== 分享按钮 ===== */
.share-btn{background:none;border:1px solid var(--border);color:var(--muted);padding:6px 14px;border-radius:var(--radius-sm);cursor:pointer;font-size:.85em;transition:all .2s;display:inline-flex;align-items:center;gap:4px;margin-right:8px}
.share-btn:hover{border-color:var(--info);color:var(--info)}

/* ===== 模态框操作栏 ===== */
.modal-actions{display:flex;align-items:center;gap:8px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}
.modal-actions .fav-btn{font-size:1.3em;padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius-sm)}
.modal-actions .fav-btn:hover{border-color:var(--gold)}

/* ===== 分页跳转 ===== */
.pg-jump{display:flex;align-items:center;gap:4px;color:var(--muted);font-size:.82em;margin-left:8px}
.pg-jump input{width:40px;padding:4px 6px;border:1px solid var(--border);border-radius:var(--radius-xs);background:var(--card);color:var(--text);font-size:.85em;text-align:center}
.pg-jump input:focus{border-color:var(--accent);outline:none}

/* ===== 搜索信息 ===== */
.search-info{color:var(--muted);margin-bottom:10px;font-size:.82em}

/* ===== 响应式 ===== */
@media(max-width:640px){
  .search-history{left:14px;right:14px}
  .hot-search{padding:0 14px}
  .pg-jump{display:none}
}

/* ===== 时间筛选 ===== */
.time-filters{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.time-btn{padding:4px 12px;border:1px solid var(--border);border-radius:20px;background:transparent;color:var(--muted);cursor:pointer;font-size:.78em;transition:all .2s}
.time-btn:hover{border-color:var(--accent);color:var(--accent)}
.time-btn.on{border-color:var(--gold);color:var(--gold);background:rgba(255,217,61,.08)}

/* ===== 调试面板 ===== */
.debug-btn{position:fixed;bottom:70px;left:10px;font-size:.75em;color:var(--muted);cursor:pointer;z-index:30;padding:4px 8px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xs);opacity:.6;transition:opacity .2s}
.debug-btn:hover{opacity:1}
.debug-panel{display:none;position:fixed;bottom:70px;left:10px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:10px;font-size:.7em;color:var(--muted);max-height:200px;overflow-y:auto;z-index:30;max-width:320px;box-shadow:var(--shadow)}
.debug-hd{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;padding-bottom:6px;border-bottom:1px solid var(--border)}
.debug-hd button{background:none;border:none;color:var(--muted);cursor:pointer;font-size:1.1em;padding:2px 6px}
.debug-hd button:hover{color:var(--error)}
.debug-line{margin-bottom:3px;padding:2px 0;border-bottom:1px solid var(--border);word-break:break-all}
.debug-line:last-child{border-bottom:none}