/* 基础样式变量 */
:root{ --primary:#3a86ff; --primary-dark:#2667cc; --secondary:#ff006e; --accent:#8338ec; --dark:#1a1a2e; --darker:#16213e; --light:#f8f9fa; --gray:#6c757d; --light-gray:#e9ecef; --border:#d1d5db; --success:#2dc653; --warning:#ffbe0b; --gold:#ffd700; --silver:#c0c0c0; --bronze:#cd7f32; --card-bg:rgba(255,255,255,0.95); --glass-bg:rgba(255,255,255,0.88); --card-shadow:0 4px 12px rgba(0,0,0,0.08); --text-gradient:linear-gradient(135deg,var(--primary),var(--accent)); --radius-sm:3px; --radius:6px; --radius-xl:10px; --spacing-xs:2px; --spacing-sm:4px; --spacing:8px; --spacing-lg:16px; --spacing-xl:24px; --shadow-hover:0 4px 12px rgba(0,0,0,0.08); --transition:all 0.2s ease; }

/* 基础样式重置与设置 */
*{ margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
body{ font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif; line-height:1.5; color:var(--dark); background:linear-gradient(135deg,#f0f4f8 0%,#e2e8f0 100%); min-height:100vh; position:relative; overflow-x:hidden; }
body::before{ content:""; position:absolute; top:0; left:0; width:100%; height:250px; background:var(--text-gradient); clip-path:polygon(0 0,100% 0,100% 65%,0 100%); z-index:-1; opacity:0.08; }
.container{ width:100%; max-width:1200px; margin:0 auto; padding:10px; }

/* 图片懒加载样式 */
img.lazyload{ background:var(--light-gray) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cpolyline points='12 6 12 12 16 14'%3E%3C/polyline%3E%3C/svg%3E") center/contain no-repeat; min-height:60px; display:block; }
img.lazyload.loaded{ background:none; }

/* 头部导航样式 */
header{ background:var(--glass-bg); box-shadow:0 2px 10px rgba(0,0,0,0.08); position:sticky; top:0; z-index:100; backdrop-filter:blur(10px); border-bottom:1px solid rgba(255,255,255,0.7); }
.header-content{ display:flex; justify-content:space-between; align-items:center; padding:10px 0; }
.site-logo{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.logo-icon{ background:var(--text-gradient); width:36px; height:36px; border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:18px; color:white; }
.logo-text{ font-size:20px; font-weight:800; background:var(--text-gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }

/* 主内容区域样式 */
main{ padding:25px 0 40px; }

/* 面包屑导航 */
.breadcrumb{ display:flex; margin-bottom:15px; padding:10px 15px; background:var(--glass-bg); border-radius:12px; font-size:14px; box-shadow:var(--card-shadow); overflow-x:auto; white-space:nowrap; }
.breadcrumb a{ text-decoration:none; color:var(--gray); transition:color 0.3s; position:relative; }
.breadcrumb a:hover{ color:var(--primary); }
.breadcrumb span{ margin:0 8px; color:var(--gray); font-weight:300; }

/* 内容布局 */
.content-layout{ display:flex; flex-direction:column; gap:20px; }

/* 文章导航按钮 */
.article-navigation{ display:flex; flex-direction:column; gap:12px; margin:30px 0; }
.nav-btn{ display:flex; align-items:center; padding:15px; border-radius:14px; background:var(--card-bg); color:var(--darker); text-decoration:none; gap:12px; box-shadow:var(--card-shadow); transition:all 0.3s; position:relative; overflow:hidden; }
.prev-btn{ padding-left:18px; }
.next-btn{ justify-content:space-between; padding-right:18px; }
.nav-btn::after{ content:''; position:absolute; top:0; right:0; bottom:0; left:0; background:var(--text-gradient); opacity:0; transition:opacity 0.3s ease; z-index:1; }
.nav-btn:hover::after{ opacity:0.05; }
.nav-btn i{ font-size:20px; transition:transform 0.3s; position:relative; z-index:2; }
.prev-btn i{ color:var(--primary); }
.next-btn i{ color:var(--secondary); }
.nav-btn:hover i{ transform:scale(1.1); }
.nav-info{ display:flex; flex-direction:column; gap:3px; overflow:hidden; position:relative; z-index:2; }
.nav-title{ font-size:13px; color:var(--gray); font-weight:500; }
.nav-name{ font-weight:700; font-size:16px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.prev-btn .nav-name{ color:var(--primary); }
.next-btn .nav-name{ color:var(--accent); }
.nav-btn:hover .nav-title{ color:var(--dark); }


/* 文章内容样式 */
article{ background:var(--card-bg); border-radius:18px; box-shadow:var(--card-shadow); padding:10px; overflow:hidden; position:relative; margin-bottom:20px; }
.article-meta{ display:flex; flex-direction:column; gap:12px; margin-bottom:15px; }
.author-container{ display:flex; align-items:center; gap:10px; }
.author-avatar{ width:44px; height:44px; border-radius:50%; overflow:hidden; background:linear-gradient(135deg,#5e72e4,#825ee4); display:flex; align-items:center; justify-content:center; }
.author-avatar img{ width:100%; height:100%; object-fit:cover; }
.author-info h4{ color:var(--darker); font-size:15px; margin-bottom:2px; }
.author-info .post-meta{ display:flex; gap:12px; font-size:12px; color:var(--gray); flex-wrap:wrap; }
.article-title{ font-size:24px; margin-bottom:15px; color:var(--darker); line-height:1.3; position:relative; padding-bottom:12px; }
.article-title::after{ content:''; position:absolute; bottom:0; left:0; width:60px; height:3px; background:var(--text-gradient); border-radius:8px; }
.article-summary{ background:linear-gradient(to right,#f8f9fa,#e8f0fe); padding:15px; border-radius:12px; margin-bottom:20px; font-size:15px; border-left:4px solid var(--primary); }
.article-content{ font-size:15px; color:#3c4043; position:relative; overflow:hidden; max-height:700px; transition:max-height 0.5s ease; }
.article-content.collapsed{ mask-image:linear-gradient(to bottom,black 40%,transparent 100%); -webkit-mask-image:linear-gradient(to bottom,black 40%,transparent 100%); }
.article-content.expanded{ max-height:5000px; mask-image:none; -webkit-mask-image:none; }
.article-content h2{ font-size:20px; margin:25px 0 15px; padding-bottom:10px; border-bottom:1px solid var(--light-gray); color:var(--darker); }
.article-content h3{ font-size:18px; margin:20px 0 15px; color:var(--darker); }
.article-content p{ margin-bottom:16px; line-height:1.6; }
.article-content img{ max-width:100%; height:auto; display:block; margin:20px auto; border-radius:10px; box-shadow:0 4px 10px rgba(0,0,0,0.08); opacity:0; transition:opacity 0.5s ease; }
.article-content img.loaded{ opacity:1; }
.expandable-section{ background:#f9fafb; border-radius:10px; padding:15px; margin:20px 0; border:1px dashed var(--primary); }
.expand-toggle{ background:var(--light-gray); border:none; border-radius:20px; padding:6px 12px; font-size:13px; color:var(--gray); cursor:pointer; display:flex; align-items:center; gap:6px; transition:all 0.3s; margin-top:8px; }
.expand-toggle:hover{ background:var(--border); }
.hidden-content{ display:none; padding-top:12px; }
.expanded .hidden-content{ display:block; }
.expand-btn{ display:block; margin:15px auto 0; background:var(--light-gray); border:none; border-radius:20px; padding:8px 18px; font-size:14px; color:var(--gray); cursor:pointer; display:flex; align-items:center; gap:6px; transition:all 0.3s; }
.expand-btn:hover{ background:var(--border); color:var(--primary); }

/* 互动按钮 */
.interactive-buttons{ display:flex; flex-direction:column; gap:10px; margin:25px 0; }
.action-btn{ display:flex; align-items:center; justify-content:center; gap:8px; padding:12px; border-radius:50px; background:var(--card-bg); color:var(--darker); border:none; cursor:pointer; transition:all 0.3s; font-weight:600; font-size:15px; position:relative; box-shadow:0 4px 10px rgba(0,0,0,0.05); width:100%; }
.action-btn:hover{ transform:translateY(-2px); box-shadow:0 6px 15px rgba(0,0,0,0.1); }
.like-btn:hover{ background:#fae6e6; color:var(--secondary); }
.like-btn.active{ background:#fae6e6; color:var(--secondary); }
.save-btn:hover{ background:#e8f4ff; color:var(--primary); }
.save-btn.active{ background:#e8f4ff; color:var(--primary); }
.donate-btn{ background:linear-gradient(135deg,#ff9a9e,#fad0c4); color:white; text-shadow:0 1px 2px rgba(0,0,0,0.2); text-decoration:none; }

/* 排行榜样式 */
.ranking-section { max-width: 800px; margin: 0 auto; background: white; border-radius: 16px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); overflow: hidden; }
.ranking-header { background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%); color: white; padding: 25px 10px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; }
.ranking-header h2 { font-size: 1.8rem; font-weight: 700; display: flex; align-items: center; gap: 12px; }
.ranking-header h2 i { font-size: 1.5rem; color: #FFD700; }
.period-selector { display: flex; gap: 8px; flex-wrap: wrap; }
.period-btn { background: rgba(255, 255, 255, 0.2); border: none; color: white; padding: 8px 16px; border-radius: 50px; font-size: 0.9rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; display: flex; align-items: center; gap: 6px; }
.period-btn:hover { background: rgba(255, 255, 255, 0.3); transform: translateY(-2px); }
.period-btn.active { background: white; color: #6a11cb; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); }
.stats-summary { display: flex; align-items: center; width: 100%; padding: 0.5rem 0.75rem; background: #fff; border-radius: 6px; box-shadow: 0 1px 2px rgba(0,0,0,0.04); border: 1px solid #f5f5f5; }
.stats-item { flex: 1; text-align: center; position: relative; padding: 0 0.25rem; }
.stats-item:not(:last-child)::after { content: ''; position: absolute; right: 0; top: 20%; height: 60%; width: 1px; background: #eee; }
.stats-label { font-size: 10px; color: #888; font-weight: 500; line-height: 1; margin-bottom: 2px; letter-spacing: 0.01em; }
.stats-value { font-size: 13px; font-weight: 600; line-height: 1.1; color: #333; }
.stats-item:nth-child(2) .stats-value { color: #10b981; font-weight: 700; letter-spacing: -0.02em; }
@media (max-width: 320px) { .stats-summary { padding: 0.4rem 0.6rem; } .stats-label { font-size: 9px; } .stats-value { font-size: 12px; } }
@media (min-width: 381px) and (max-width: 768px) { .stats-summary { padding: 0.6rem 1rem; gap: 0.6rem; } .stats-label { font-size: 11px; } .stats-value { font-size: 14px; } }
.ranking-container { padding: 0 20px 20px; max-height: 500px; overflow-y: auto; }
.ranking-list { display: flex; flex-direction: column; gap: 12px; padding: 5px; }
.ranking-item { display: flex; align-items: center; background: white; border-radius: 12px; padding: 15px 20px; box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05); transition: all 0.3s ease; position: relative; overflow: hidden; }
.ranking-item:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1); }
.ranking-item::before { content: ''; position: absolute; top: 0; left: 0; height: 100%; width: 4px; background: linear-gradient(to bottom, #6a11cb, #2575fc); }
.ranking-place { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: #f0f4ff; border-radius: 50%; font-weight: 700; font-size: 1.1rem; color: #4a6cf7; margin-right: 15px; flex-shrink: 0; }
.ranking-item.place-1 .ranking-place { background: linear-gradient(135deg, #FFD700, #FFA500); color: white; }
.ranking-item.place-2 .ranking-place { background: linear-gradient(135deg, #C0C0C0, #A9A9A9); color: white; }
.ranking-item.place-3 .ranking-place { background: linear-gradient(135deg, #CD7F32, #A0522D); color: white; }
.ranking-avatar { width: 50px; height: 50px; border-radius: 50%; overflow: hidden; margin-right: 15px; border: 3px solid #eef1f7; flex-shrink: 0; }
.ranking-avatar img { width: 100%; height: 100%; object-fit: cover; }
.ranking-info { flex-grow: 1; }
.ranking-name { font-weight: 600; font-size: 1.1rem; color: #2d3748; margin-bottom: 5px; }
.ranking-name a { color: #2d3748; text-decoration: none; }
.ranking-time { display: flex; align-items: center; gap: 6px; font-size: 0.9rem; color: #718096; }
.ranking-time i { color: #4a6cf7; }
.donation-count { font-weight: 600; color: #4a6cf7; }
.ranking-amount { background: linear-gradient(135deg, #6a11cb, #2575fc); color: white; padding: 8px 15px; border-radius: 20px; font-weight: 600; font-size: 0.95rem; box-shadow: 0 4px 10px rgba(106, 17, 203, 0.2); transition: all 0.3s ease; flex-shrink: 0; }
.ranking-amount:hover { transform: scale(1.05); box-shadow: 0 6px 15px rgba(106, 17, 203, 0.3); }
.no-data { text-align: center; padding: 40px 20px; color: #a0aec0; font-size: 1.1rem; }
.no-data i { font-size: 3rem; margin-bottom: 15px; color: #e2e8f0; }
.ranking-container::-webkit-scrollbar { width: 8px; }
.ranking-container::-webkit-scrollbar-track { background: #f1f5f9; border-radius: 4px; }
.ranking-container::-webkit-scrollbar-thumb { background: #cbd5e0; border-radius: 4px; }
.ranking-container::-webkit-scrollbar-thumb:hover { background: #a0aec0; }
@media (max-width: 768px) { .ranking-header { flex-direction: column; align-items: flex-start; } .period-selector { width: 100%; justify-content: center; } .ranking-item { flex-wrap: wrap; } .ranking-amount { margin-top: 10px; width: 100%; text-align: center; } }
@media (max-width: 480px) { .ranking-header h2 { font-size: 1.5rem; } .period-btn { padding: 6px 12px; font-size: 0.85rem; } .ranking-place { width: 30px; height: 30px; font-size: 1rem; } .ranking-avatar { width: 40px; height: 40px; } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.ranking-item { animation: fadeIn 0.5s ease forwards; }
.stats-item { animation: fadeIn 0.4s ease forwards; }
.medal { position: absolute; top: -10px; right: -10px; width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; opacity: 0.5; z-index: 0; }
.ranking-item.place-1 .medal { color: #FFD700; }
.ranking-item.place-2 .medal { color: #C0C0C0; }
.ranking-item.place-3 .medal { color: #CD7F32; }
.ranking-item::after{ content:''; position:absolute; top:50%; right:30px; transform:translateY(-53%); font-size:100px; font-weight:700; color:rgba(78,84,200,0.05); z-index:0; }
.ranking-item:nth-child(1)::after{content:'1'}
.ranking-item:nth-child(2)::after{content:'2'}
.ranking-item:nth-child(3)::after{content:'3'}
.ranking-item:nth-child(4)::after{content:'4'}
.ranking-item:nth-child(5)::after{content:'5'}
.ranking-item:nth-child(6)::after{content:'6'}
.ranking-item:nth-child(7)::after{content:'7'}
.ranking-item:nth-child(8)::after{content:'8'}
.ranking-item:nth-child(9)::after{content:'9'}
.ranking-item:nth-child(10)::after{content:'10'}

/* 侧边栏样式 */
.sidebar{ width:100%; }
.author-card{ background:var(--card-bg); border-radius:18px; box-shadow:var(--card-shadow); padding:20px; margin-bottom:20px; text-align:center; position:relative; overflow:hidden; }
.author-card-header{ margin-bottom:15px; position:relative; }
.author-card-avatar{ width:90px; height:90px; border-radius:50%; overflow:hidden; margin:0 auto 12px; background:linear-gradient(135deg,#5e72e4,#825ee4); display:flex; align-items:center; justify-content:center; border:3px solid white; box-shadow:0 6px 15px rgba(0,0,0,0.1); }
.author-card-avatar img{ width:100%; height:100%; object-fit:cover; }
.author-card-name{ font-size:20px; font-weight:700; margin-bottom:3px; color:var(--darker); }
.author-card-title{ font-size:15px; color:var(--primary); margin-bottom:8px; }
.author-card-stats{ display:flex; justify-content:center; gap:18px; margin:15px 0; }
.stat-item{ text-align:center; }
.stat-value{ font-size:17px; font-weight:700; color:var(--darker); }
.stat-label{ font-size:13px; color:var(--gray); }
.author-bio{ font-size:14px; color:var(--gray); line-height:1.5; margin:15px 0; position:relative; }
.author-socials{ display:flex; justify-content:center; gap:10px; margin-top:15px; }
.social-link{ display:flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:50%; background:var(--light-gray); color:var(--dark); font-size:15px; transition:all 0.3s; }
.social-link:hover{ background:var(--primary); color:white; transform:translateY(-2px); }
.follow-btn{ display:inline-block; margin-top:12px; padding:10px 26px; background:var(--primary); color:white; border:none; border-radius:50px; font-weight:600; cursor:pointer; transition:all 0.3s; position:relative; overflow:hidden; }
.follow-btn:hover{ background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 5px 12px rgba(58,134,255,0.3); }
.follow-btn.following{ background:var(--light-gray); color:var(--dark); }
.latest-articles{ background:white; border-radius:10px; padding:12px; margin-top:12px; box-shadow:0 3px 10px rgba(0,0,0,0.05); }
.latest-title{ font-weight:700; font-size:16px; margin-bottom:12px; color:var(--darker); display:flex; align-items:center; gap:6px; }
.latest-title i{ color:var(--primary); }
.article-link{ display:block; padding:8px; border-radius:6px; background:rgba(240,244,248,0.8); margin-bottom:8px; text-decoration:none; color:var(--dark); font-size:14px; transition:all 0.3s; display:flex; align-items:center; gap:6px; }
.article-link:hover{ background:var(--primary); color:white; transform:translateY(-2px); }
.article-link i{ font-size:12px; width:24px; height:24px; display:flex; align-items:center; justify-content:center; border-radius:50%; background:rgba(255,255,255,0.2); }
.sidebar-recommendations{ background:var(--card-bg); border-radius:18px; box-shadow:var(--card-shadow); padding:18px; margin-bottom:20px; }
.recommendations-title{ font-size:18px; margin-bottom:15px; padding-bottom:10px; border-bottom:1px solid var(--light-gray); display:flex; align-items:center; gap:8px; color:var(--darker); }
.recommendations-list{ display:grid; gap:12px; }
.recommendation-item{ display:flex; gap:10px; padding:10px; border-radius:10px; background:rgba(255,255,255,0.7); transition:all 0.3s; }
.recommendation-item:hover{ transform:translateY(-2px); box-shadow:0 6px 15px rgba(0,0,0,0.05); background:white; }
.recommendation-thumb{ width:70px; height:70px; border-radius:8px; overflow:hidden; flex-shrink:0; }
.recommendation-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform 0.3s; }
.recommendation-item:hover .recommendation-thumb img{ transform:scale(1.05); }
.recommendation-content{ flex:1; }
.recommendation-content a{ text-decoration:none; font-weight:600; font-size:15px; color:var(--darker); display:block; margin-bottom:6px; transition:color 0.3s; }
.recommendation-content a:hover{ color:var(--primary); }
.recommendation-meta{ display:flex; gap:12px; color:var(--gray); font-size:12px; }
.tags-section{ background:var(--card-bg); border-radius:18px; box-shadow:var(--card-shadow); padding:20px; margin-bottom:20px; }
.tags-title{ font-size:18px; display:flex; align-items:center; gap:8px; margin-bottom:15px; }
.tags-title i{ color:var(--accent); }
.tags-container{ display:flex; flex-wrap:wrap; gap:8px; }
.tag-item{ display:inline-flex; padding:6px 14px; background:rgba(58,134,255,0.12); color:var(--primary); border-radius:50px; font-size:13px; font-weight:500; cursor:pointer; transition:all 0.3s; position:relative; }
.tag-item:nth-child(3n+2){ background:rgba(255,106,0,0.12); color:#ff6a00; }
.tag-item:nth-child(3n+3){ background:rgba(131,56,236,0.12); color:var(--accent); }
.tag-item:hover{ transform:translateY(-2px); box-shadow:0 3px 6px rgba(0,0,0,0.1); }
.tag-hot::after{ content:'HOT'; position:absolute; top:-7px; right:-7px; background:var(--secondary); color:white; font-size:7px; padding:2px 5px; border-radius:8px; font-weight:bold; box-shadow:0 2px 3px rgba(0,0,0,0.1); }

/* 评论区样式 */
.comments-title {font-size: clamp(1.2rem, 3vw, 1.5rem); font-weight: 600; margin-bottom: 4px; display: flex; align-items: center; color: var(--darker); }
.comments-title i { color: var(--primary); margin-right: 8px; font-size: 1.1em; }
.comments-count { color: var(--secondary-dark); font-size: 0.9rem; font-weight: 400; margin-left: 6px; }
.title-underline { height: 2px; width: 60px; background-color: var(--primary); border-radius: 2px; margin-bottom: 20px; }
.sort-filter {display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 8px;}
.sort-options { display: flex; align-items: center; gap: 6px; }
.sort-label { color: var(--secondary-dark); font-size: 0.85rem; }
.sort-btn { padding: 4px 10px; border-radius: var(--radius); border: none; font-size: 0.85rem; display: flex; align-items: center; gap: 4px; cursor: pointer; transition: var(--transition); }
.sort-btn.active { background-color: var(--primary); color: white; }
.sort-btn:not(.active) { background-color: var(--white); color: var(--secondary-dark); }
.sort-btn:not(.active):hover { background-color: var(--gray-light); }
.search-box {position: relative; width: 100%; max-width: 260px;}
.search-input { width: 100%; padding: 6px 10px 6px 30px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.85rem; transition: var(--transition); background-color: var(--white); }
.search-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba (59, 130, 246, 0.1); }
.search-icon { position: absolute; left: 10px; top: 50%; transform: translateY (-50%); color: var(--gray-dark); font-size: 0.85rem; }
.comment-input-container {background-color: var(--white); border-radius: var(--radius-xl); padding: 12px; margin-bottom: 20px; box-shadow: var(--card-shadow); transition: var(--transition); }
.comment-input-container:hover { transform: translateY (-1px); box-shadow: var(--shadow-hover); }
.comment-input-wrapper { display: flex; gap: 10px; }
.avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.input-content { flex: 1; }
.comment-textarea { width: 100%; min-height: 70px; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius); resize: vertical; font-family: inherit; font-size: 0.9rem; transition: var(--transition); line-height: 1.3; background-color: var(--white); color: var(--dark); }
.comment-textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba (59, 130, 246, 0.1); }
.input-actions {display: flex; justify-content: space-between; align-items: center; margin-top: 8px;}
.input-tools { display: flex; align-items: center; gap: 8px; color: var(--secondary-dark); }
.tool-btn { background: none; border: none; color: inherit; cursor: pointer; font-size: 0.9rem; transition: var(--transition); padding: 3px; border-radius: var(--radius-sm); }
.tool-btn:hover { color: var(--primary); background-color: var(--primary-light); }
.char-count { font-size: 0.8rem; color: var(--secondary-dark); }
.submit-btn { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; border: none; border-radius: var(--radius); padding: 5px 14px; font-size: 0.85rem; cursor: pointer; display: flex; align-items: center; gap: 6px; transition: var(--transition); box-shadow: 0 2px 4px rgba (59, 130, 246, 0.2); }
.submit-btn:hover { opacity: 0.95; box-shadow: 0 3px 6px rgba (59, 130, 246, 0.25); }
.comments-list {display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px;}
.comment-item { background-color: var(--white); border-radius: var(--radius-xl); padding: 12px; box-shadow: var(--card-shadow); transition: var(--transition); }
.comment-item:hover { transform: translateY (-1px); box-shadow: var(--shadow-hover); }
.comment-header {display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 6px; margin-bottom: 6px;}
.comment-author { font-weight: 500; font-size: 0.9rem; margin-bottom: 2px; color: var(--darker); }
.comment-time { font-size: 0.75rem; color: var(--secondary-dark); }
.more-btn { background: none; border: none; color: var(--secondary-dark); cursor: pointer; font-size: 0.8rem; transition: var(--transition); padding: 2px; }
.more-btn:hover { color: var(--primary); }
.comment-body {margin-bottom: 8px; font-size: 0.9rem; color: var(--dark); }
.comment-image { width: 100%; max-height: 220px; object-fit: cover; border-radius: var(--radius); margin-top: 8px; }
.comment-actions {display: flex; align-items: center; gap: 14px; margin-bottom: 8px; font-size: 0.85rem;}
.action-btn { background: none; border: none; color: var(--secondary-dark); cursor: pointer; display: flex; align-items: center; gap: 4px; transition: var(--transition); padding: 2px 4px; border-radius: var(--radius-sm); width: auto; box-shadow: none; justify-content: flex-start; font-weight: 400; }
.action-btn:hover { color: var(--primary); background-color: var(--primary-light); transform: none; box-shadow: none; }
.action-btn.liked { color: var(--primary); }
.replies {margin-left: 10px; padding-left: 10px; border-left: 1px solid var(--border); }
.reply-item { padding: 8px 0; }
.reply-content { background-color: var(--light-gray); border-radius: var(--radius); padding: 8px; margin-bottom: 6px; }
.reply-author { font-weight: 500; font-size: 0.85rem; margin-bottom: 2px; color: var(--darker); }
.reply-text { font-size: 0.85rem; color: var(--dark); }
.reply-actions {display: flex; align-items: center; gap: 12px; font-size: 0.75rem;}
.reply-action-btn { background: none; border: none; color: var(--secondary-dark); cursor: pointer; transition: var(--transition); padding: 2px; }
.reply-action-btn:hover { color: var(--primary); }
.reply-input {margin-top: 8px;}
.reply-textarea { width: 100%; min-height: 50px; padding: 6px 8px; border: 1px solid var(--border); border-radius: var(--radius); resize: vertical; font-family: inherit; font-size: 0.85rem; transition: var(--transition); background-color: var(--white); color: var(--dark); }
.reply-textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba (59, 130, 246, 0.1); }
.reply-submit { background-color: var(--primary); color: white; border: none; border-radius: var(--radius); padding: 4px 12px; font-size: 0.8rem; cursor: pointer; transition: var(--transition); margin-top: 6px; float: right; }
.reply-submit:hover { background-color: var(--primary-dark); }
.view-more-replies {background: none; border: none; color: var(--primary); font-size: 0.8rem; font-weight: 500; cursor: pointer; display: flex; align-items: center; gap: 4px; padding: 4px 0; transition: var(--transition); }
.view-more-replies:hover { color: var(--primary-dark); }
.load-more {text-align: center; margin-top: 16px;}
.load-more-btn { border: 1px solid var(--primary); color: var(--primary); background: none; padding: 6px 18px; border-radius: var(--radius); font-size: 0.85rem; cursor: pointer; display: flex; align-items: center; gap: 6px; transition: var(--transition); margin: 0 auto; }
.load-more-btn:hover { background-color: var(--primary); color: white; transform: none; box-shadow: none; }
.load-more-text { color: var(--secondary-dark); font-size: 0.8rem; margin-top: 8px; }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.animate-bounce { animation: bounce 0.8s ease infinite; }
.animate-spin { animation: spin 1s linear infinite; }
@media (max-width: 768px) { .sort-filter { flex-direction: column; align-items: flex-start; } .search-box { max-width: 100%; width: 100%; } .comment-actions { gap: 10px; } }
@media (max-width: 480px) { .comment-actions { flex-wrap: wrap; } .submit-btn span { display: none; } .submit-btn { padding: 5px 10px; } .comment-input-wrapper { gap: 8px; } .avatar { width: 32px; height: 32px; } }

/* 移动端菜单 */
.mobile-menu-btn{ background:none; border:none; font-size:24px; color:var(--dark); cursor:pointer; display:flex; align-items:center; justify-content:center; width:44px; height:44px; border-radius:50%; transition:background-color 0.3s; }
.mobile-menu-btn:hover{ background-color:rgba(0,0,0,0.05); }
.mobile-menu{ position:fixed; top:0; right:-100%; width:80%; max-width:300px; height:100vh; background:white; z-index:1000; padding:15px; box-shadow:-5px 0 15px rgba(0,0,0,0.1); transition:right 0.3s ease; overflow-y:auto; }
.mobile-menu.active{ right:0; }
.menu-close{ background:none; border:none; font-size:24px; cursor:pointer; display:flex; align-items:center; justify-content:flex-end; width:100%; padding:8px 0; }
.mobile-menu ul{ list-style:none; margin-top:25px; }
.mobile-menu li{ margin-bottom:18px; }
.mobile-menu a{ text-decoration:none; color:var(--dark); font-size:17px; font-weight:600; display:flex; align-items:center; gap:8px; padding:8px 0; }
.overlay{ position:fixed; top:0; left:0; width:100%; height:100vh; background:rgba(0,0,0,0.5); z-index:999; display:none; }
.overlay.active{ display:block; }

/* 动画效果 */
@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes animate-spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes rotate{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.animate-bounce{animation:bounce 0.8s ease infinite;}
.animate-spin{animation:animate-spin 1s linear infinite;}
.float-in{animation:fadeIn 0.5s ease forwards;opacity:0;}
.float-in:nth-child(1){animation-delay:0.1s;}
.float-in:nth-child(2){animation-delay:0.2s;}
.float-in:nth-child(3){animation-delay:0.3s;}
.float-in:nth-child(4){animation-delay:0.4s;}
.float-in:nth-child(5){animation-delay:0.5s;}

/* 响应式设计 */
@media(min-width:481px){ .header-content{padding:12px 0;} .logo-icon{width:38px;height:38px;font-size:19px;} .logo-text{font-size:22px;} .mobile-menu{padding-top:35px;} .article-title{font-size:26px;} .article-content h2{font-size:22px;} .interactive-buttons{flex-direction:row;flex-wrap:wrap;gap:8px;} .action-btn{width:auto;padding:12px 18px;} .comment-form{flex-direction:row;align-items:flex-start;} .comment-avatar{margin:0;} .comments-header{flex-direction:row;justify-content:space-between;align-items:center;} .sort-comments{align-self:center;} .comment-header{flex-direction:row;justify-content:space-between;align-items:center;} .reply-header{flex-direction:row;justify-content:space-between;align-items:center;} .article-navigation{flex-direction:row;} .nav-btn{flex:1;} }
@media(min-width:769px){ .content-layout{flex-direction:row;} .main-content{flex:1;} .sidebar{width:320px;align-self:flex-start;position:sticky;top:90px;} }
@media(min-width:1024px){ .ranking-item::after{font-size:120px;right:30px;} }
@media(min-width:1025px){ .container{padding:0 20px;} article{padding:25px 30px;} .article-title{font-size:28px;} }