:root{--bg: #0d1117;--surface: #161b22;--border: #30363d;--text: #c9d1d9;--text-muted: #8b949e;--accent: #58a6ff;--score-high: #3fb950;--score-mid: #d29922;--score-low: #8b949e;--upvote: #f78166;--tag-bg: #21262d;--radius: 8px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans JP,sans-serif;font-size:14px;line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}#header{background:var(--surface);border-bottom:1px solid var(--border);padding:0 16px;position:sticky;top:0;z-index:100}.header-inner{max-width:860px;margin:0 auto;display:flex;align-items:center;gap:24px;height:48px}.site-name{font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.5px;flex-shrink:0}.site-name span{color:var(--accent)}#controls{max-width:860px;margin:0 auto;padding:12px 16px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}.tab-group{display:flex;gap:4px;flex-wrap:wrap}.tab{padding:4px 12px;border-radius:20px;border:1px solid var(--border);background:transparent;color:var(--text-muted);cursor:pointer;font-size:13px;transition:all .15s}.tab:hover{color:var(--text);border-color:var(--text-muted)}.tab.active{background:var(--accent);border-color:var(--accent);color:#0d1117;font-weight:600}.sort-group{display:flex;gap:4px}.sort-btn{padding:4px 10px;border-radius:6px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;font-size:12px;transition:all .15s}.sort-btn:hover{color:var(--text);background:var(--tag-bg)}.sort-btn.active{color:var(--text);background:var(--tag-bg);font-weight:600}#article-list{max-width:860px;margin:0 auto;padding:0 16px 48px;display:flex;flex-direction:column;gap:1px}.card{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--border);animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.card-vote{display:flex;flex-direction:column;align-items:center;gap:2px;flex-shrink:0;width:36px;padding-top:2px}.upvote-btn{background:none;border:none;cursor:pointer;font-size:16px;color:var(--text-muted);line-height:1;padding:2px 6px;border-radius:4px;transition:all .15s}.upvote-btn:hover{color:var(--upvote);background:#f781661a}.upvote-btn.voted{color:var(--upvote)}.vote-count{font-size:12px;color:var(--text-muted);font-weight:600}.card-content{flex:1;min-width:0}.card-title-row{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap;margin-bottom:4px}.card-title{font-size:15px;font-weight:600;color:var(--text);line-height:1.4;transition:color .1s}.card-title:hover{color:var(--accent)}.lang-badge{font-size:11px;padding:1px 6px;border-radius:4px;border:1px solid var(--border);color:var(--text-muted);flex-shrink:0;font-weight:500}.card-meta{font-size:12px;color:var(--text-muted);display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:6px}.meta-dot{color:var(--border)}.score{font-weight:600}.score-high{color:var(--score-high)}.score-mid{color:var(--score-mid)}.score-low{color:var(--score-low)}.card-summary{font-size:13px;color:var(--text-muted);margin-bottom:8px;line-height:1.5}.card-tags{display:flex;gap:4px;flex-wrap:wrap}.tag{font-size:11px;padding:2px 8px;background:var(--tag-bg);border-radius:4px;color:var(--text-muted)}#loader{text-align:center;padding:32px;color:var(--text-muted);font-size:13px}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 8px}@keyframes spin{to{transform:rotate(360deg)}}#end-message{text-align:center;padding:32px;color:var(--text-muted);font-size:13px}@media (max-width: 600px){.header-inner{gap:12px}.card-title{font-size:14px}.card-summary{display:none}}