*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#f8fafc;--card:#fff;--text:#1e293b;--text2:#64748b;--text3:#94a3b8;--accent:#3b82f6;--accent2:#2563eb;--border:#e2e8f0;--hover:#f1f5f9;--like:#ef4444;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.04),0 1px 2px rgba(0,0,0,.06);--shadow-lg:0 4px 16px rgba(0,0,0,.08);--transition:all .2s ease}
body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%}
#app{display:flex;flex-direction:column;min-height:100vh}

.top-nav{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;position:sticky;top:0;z-index:100;backdrop-filter:blur(12px);background:rgba(255,255,255,.92)}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;height:56px;gap:24px}
.logo{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:700;white-space:nowrap;color:var(--text)}
.logo-icon{font-size:22px;color:var(--accent)}
.logo-text{letter-spacing:-.5px}
.logo-highlight{color:var(--accent);font-weight:500}
.nav-search{display:flex;align-items:center;flex:1;max-width:440px;background:var(--bg);border:1px solid var(--border);border-radius:24px;padding:0 16px;transition:var(--transition)}
.nav-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.1)}
.search-icon{color:var(--text3);flex-shrink:0;margin-right:8px}
.nav-search input{flex:1;background:none;border:none;padding:9px 0;font-size:14px;outline:none;color:var(--text)}
.nav-search input::placeholder{color:var(--text3)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;white-space:nowrap}
.nav-links a{padding:6px 14px;font-size:14px;border-radius:8px;color:var(--text2);transition:var(--transition)}
.nav-links a:hover{background:var(--hover);color:var(--text)}
.nav-links .btn-primary-link{padding:6px 18px;background:var(--accent);color:#fff;border-radius:20px;font-size:13px;font-weight:500}
.nav-links .btn-primary-link:hover{background:var(--accent2)}
.user-badge{display:flex;align-items:center;gap:6px;padding:4px 12px 4px 4px;border-radius:20px;cursor:pointer;font-size:13px;color:var(--text);transition:var(--transition)}
.user-badge:hover{background:var(--hover)}
.user-badge img{width:26px;height:26px;border-radius:50%;object-fit:cover;border:2px solid var(--border)}

.main-content{flex:1;max-width:1040px;width:100%;margin:32px auto;padding:0 24px}

.home-layout{display:flex;gap:28px}
.sidebar{width:220px;flex-shrink:0}
.sidebar-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);margin-bottom:16px}
.sidebar-card-head{padding:16px 18px 12px;font-size:13px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.5px}
.sidebar-card .bar-item{display:flex;align-items:center;padding:10px 18px;cursor:pointer;transition:var(--transition);border-left:3px solid transparent;font-size:14px}
.sidebar-card .bar-item:hover{background:var(--hover);border-left-color:var(--accent)}
.sidebar-card .bar-item.active{background:#eff6ff;border-left-color:var(--accent);color:var(--accent);font-weight:500}
.sidebar-card .bar-item .bar-icon{font-size:18px;margin-right:10px;flex-shrink:0}
.sidebar-card .bar-item .bar-info{overflow:hidden}
.sidebar-card .bar-item .bar-name{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-card .bar-item .bar-meta{font-size:11px;color:var(--text3)}
.content-area{flex:1;min-width:0}

.topic-header{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:20px 24px;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow)}
.topic-header h2{font-size:18px;display:flex;align-items:center;gap:10px;font-weight:600}
.topic-header .bar-icon-lg{font-size:28px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg);border-radius:12px}
.topic-header .topic-desc{font-size:13px;color:var(--text2);margin-left:12px;font-weight:400}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border:none;border-radius:10px;font-size:14px;font-weight:500;cursor:pointer;transition:var(--transition)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent2);transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,.3)}
.btn-sm{padding:5px 12px;font-size:12px;border-radius:6px}
.btn-like{background:transparent;border:1px solid var(--border);color:var(--text2);cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:var(--transition)}
.btn-like:hover{border-color:var(--like);color:var(--like)}
.btn-like.liked{background:#fef2f2;border-color:var(--like);color:var(--like)}
.btn-share{background:transparent;border:1px solid var(--border);color:var(--text2);cursor:pointer;display:inline-flex;align-items:center;gap:4px;transition:var(--transition)}
.btn-share:hover{border-color:var(--accent);color:var(--accent)}

.welcome-card{background:linear-gradient(135deg,#1e293b,#334155);color:#fff;border-radius:var(--radius);padding:48px;margin-bottom:20px;text-align:center;position:relative;overflow:hidden}
.welcome-card::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(59,130,246,.15) 0%,transparent 60%);animation:spin 20s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.welcome-card h1{font-size:30px;font-weight:700;margin-bottom:8px;position:relative}
.welcome-card p{opacity:.7;font-size:15px;position:relative}

.article-list{display:flex;flex-direction:column;gap:12px}
.article-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:20px 24px;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow);display:flex;align-items:flex-start;gap:16px}
.article-card:hover{border-color:#cbd5e1;box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.article-card .article-avatar{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;background:linear-gradient(135deg,#dbeafe,#ede9fe)}
.article-card .article-body{flex:1;min-width:0}
.article-card .article-title{font-size:15px;font-weight:600;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.article-card .article-excerpt{font-size:13px;color:var(--text2);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}
.article-card .article-meta{font-size:12px;color:var(--text3);display:flex;gap:16px;align-items:center}
.article-card .article-stats{display:flex;gap:14px;font-size:12px;color:var(--text3);flex-shrink:0;padding-top:4px}
.article-card .article-stats .stat-item{display:flex;flex-direction:column;align-items:center;gap:2px}
.article-card .article-stats .stat-num{font-size:15px;font-weight:600;color:var(--text)}

.pagination{display:flex;justify-content:center;gap:4px;margin-top:24px}
.pagination button{padding:8px 16px;border:1px solid var(--border);border-radius:8px;background:var(--card);cursor:pointer;font-size:13px;color:var(--text2);transition:var(--transition)}
.pagination button:hover{border-color:var(--accent);color:var(--accent)}
.pagination button.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.pagination button:disabled{opacity:.35;cursor:default;pointer-events:none}

.article-detail{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow);overflow:hidden}
.article-detail-header{padding:28px 32px 20px;border-bottom:1px solid var(--border)}
.article-detail-header h1{font-size:24px;font-weight:700;margin-bottom:12px;line-height:1.3}
.article-detail-header .header-meta{font-size:13px;color:var(--text2);display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.article-detail-header .author-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover;margin-right:4px;vertical-align:middle}
.article-detail-body{padding:32px;font-size:15px;line-height:1.9;white-space:pre-wrap;word-break:break-word;color:#334155}
.article-detail-body img{margin:16px 0;border-radius:8px;max-height:500px;cursor:pointer}
.article-image-wrapper{padding:0 32px 16px}
.article-image-wrapper img{border-radius:8px;max-height:400px;cursor:pointer;transition:var(--transition)}
.article-image-wrapper img:hover{opacity:.95}

.replies-wrap{padding:0 32px 24px}
.replies-wrap h3{font-size:15px;font-weight:600;padding-bottom:14px;margin-bottom:8px;border-bottom:1px solid var(--border);color:var(--text)}
.reply-row{display:flex;padding:16px 0;border-bottom:1px solid #f8fafc}
.reply-row:last-child{border-bottom:none}
.reply-floor-num{width:52px;flex-shrink:0;padding-top:1px}
.reply-floor-num span{display:inline-block;background:var(--bg);padding:2px 10px;border-radius:10px;font-size:11px;color:var(--text3);font-weight:500}
.reply-main{flex:1;min-width:0}
.reply-main .reply-username{font-size:12px;color:var(--text2);margin-bottom:4px;font-weight:500}
.reply-main .reply-body{font-size:14px;line-height:1.7;white-space:pre-wrap;word-break:break-word}
.reply-main .reply-body img{margin:8px 0;border-radius:6px;max-height:200px;cursor:pointer}
.reply-main .reply-timestamp{font-size:11px;color:var(--text3);margin-top:4px}

.compose-box{background:#fafbfc;padding:24px 32px;border-top:1px solid var(--border);display:flex;gap:12px;align-items:flex-start}
.compose-box textarea{flex:1;padding:12px 16px;border:1px solid var(--border);border-radius:10px;font-size:14px;resize:vertical;min-height:90px;outline:none;font-family:inherit;background:#fff;transition:var(--transition)}
.compose-box textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.08)}
.compose-box-actions{display:flex;flex-direction:column;gap:8px;align-items:flex-end;flex-shrink:0}
.compose-box-actions button{padding:8px 28px;background:var(--accent);color:#fff;border:none;border-radius:10px;cursor:pointer;font-size:14px;font-weight:500;transition:var(--transition)}
.compose-box-actions button:hover{background:var(--accent2)}
.compose-box-actions .upload-btn{background:#fff;border:1px solid var(--border);color:var(--text2);font-size:12px;padding:5px 12px;cursor:pointer;border-radius:6px;transition:var(--transition)}
.compose-box-actions .upload-btn:hover{background:var(--hover)}
.login-hint{text-align:center;padding:24px;font-size:13px;color:var(--text2)}

.empty-card{text-align:center;padding:64px 24px;background:var(--card);border-radius:var(--radius);border:1px solid var(--border)}
.empty-card .empty-icon{font-size:56px;margin-bottom:12px;opacity:.6}
.empty-card p{font-size:14px;color:var(--text2)}

.breadcrumb{padding:4px 0 16px;font-size:13px;color:var(--text2);display:flex;align-items:center;gap:6px}
.breadcrumb a{color:var(--accent)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:var(--text3)}

.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(15,23,42,.5);z-index:200;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px);animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:var(--card);border-radius:16px;width:440px;max-width:92vw;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.15);animation:slideUp .25s ease}
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 16px}
.modal-header h3{font-size:18px;font-weight:600}
.modal-close{background:none;border:none;font-size:22px;cursor:pointer;color:var(--text3);padding:4px 8px;border-radius:6px;line-height:1;transition:var(--transition)}
.modal-close:hover{background:var(--hover);color:var(--text)}
.modal-body{padding:0 24px 24px;display:flex;flex-direction:column;gap:14px}
.modal-body label{font-size:13px;color:var(--text2);display:flex;flex-direction:column;gap:5px;font-weight:500}
.modal-body input,.modal-body textarea{padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;outline:none;font-family:inherit;transition:var(--transition)}
.modal-body input:focus,.modal-body textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.08)}
.modal-body textarea{resize:vertical}
.modal-body input[type="file"]{padding:8px 12px;border-style:dashed;background:var(--bg);cursor:pointer}
.modal-body .btn-primary{padding:12px;font-size:15px;font-weight:600}
.modal-switch{font-size:12px;color:var(--text3);text-align:center}
.modal-switch a{color:var(--accent);font-weight:500}

.captcha-row{display:flex;align-items:center;gap:10px}
.captcha-input{width:110px!important;flex-shrink:0}
.captcha-img{height:44px;width:110px;border:1px solid var(--border);border-radius:8px;cursor:pointer;background:var(--bg)}
.captcha-refresh{font-size:12px;color:var(--accent);white-space:nowrap}
.upload-preview{max-height:160px;border-radius:8px;margin-top:4px;border:1px solid var(--border)}
.avatar-center{text-align:center}
.avatar-preview{width:120px;height:120px;border-radius:50%;object-fit:cover;border:3px solid var(--border);background:var(--bg)}

.image-lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:300;display:flex;align-items:center;justify-content:center;cursor:pointer;animation:fadeIn .2s ease}
.image-lightbox img{max-width:92vw;max-height:92vh;object-fit:contain;border-radius:8px}

.site-footer{border-top:1px solid var(--border);padding:24px;text-align:center;font-size:12px;color:var(--text3);background:var(--card)}
.footer-inner{display:flex;align-items:center;justify-content:center;gap:8px}

.loader-overlay{position:fixed;inset:0;background:rgba(255,255,255,.75);z-index:999;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px);animation:fadeIn .2s ease}
.loader-spinner{display:flex;flex-direction:column;align-items:center;gap:14px}
.loader-spinner svg{width:40px;height:40px;animation:spinLoader .8s linear infinite}
.loader-spinner svg circle{stroke:var(--accent);stroke-dasharray:90,150;stroke-dashoffset:0;animation:dash 1.5s ease-in-out infinite}
.loader-spinner p{font-size:13px;color:var(--text2);font-weight:500}
@keyframes spinLoader{100%{transform:rotate(360deg)}}
@keyframes dash{0%{stroke-dasharray:1,150;stroke-dashoffset:0}50%{stroke-dasharray:90,150;stroke-dashoffset:-35}100%{stroke-dasharray:90,150;stroke-dashoffset:-124}}

.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:rgba(30,41,59,.97);color:#fff;z-index:500;backdrop-filter:blur(12px);animation:slideUp .4s ease;border-top:1px solid rgba(255,255,255,.1)}
.cookie-banner-inner{max-width:1040px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;gap:16px}
.cookie-icon{font-size:28px;flex-shrink:0}
.cookie-text{flex:1;min-width:0}
.cookie-text strong{display:block;font-size:14px;margin-bottom:2px}
.cookie-text p{font-size:12px;opacity:.7;line-height:1.5}
.cookie-actions{display:flex;flex-direction:column;gap:6px;align-items:center;flex-shrink:0}
.cookie-actions .btn-sm{padding:7px 20px;font-size:13px}
.cookie-link{font-size:11px;color:rgba(255,255,255,.6);white-space:nowrap}
.cookie-link:hover{color:#fff}

.health-dashboard{max-width:960px;margin:0 auto}
.health-header{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.health-header h1{font-size:22px;font-weight:700}
.health-status{display:inline-block;padding:3px 14px;border-radius:12px;color:#fff;font-size:12px;font-weight:600;letter-spacing:.5px}
.health-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.health-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:18px 20px;box-shadow:var(--shadow)}
.health-card h3{font-size:14px;font-weight:600;margin-bottom:12px;color:var(--text)}
.health-rows{display:flex;flex-direction:column;gap:6px}
.health-row{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;font-size:13px;padding:4px 0;border-bottom:1px solid #f8fafc}
.health-row:last-child{border-bottom:none}
.health-label{color:var(--text2);flex-shrink:0}
.health-value{color:var(--text);text-align:right;word-break:break-all;font-family:"SF Mono","Fira Code","Consolas",monospace;font-size:12px}

.privacy-page{max-width:760px;margin:0 auto}
.privacy-card{background:var(--card);border-radius:var(--radius);border:1px solid var(--border);padding:40px 48px;box-shadow:var(--shadow);line-height:1.9}
.privacy-card h1{font-size:24px;font-weight:700;margin-bottom:8px}
.privacy-card .privacy-date{font-size:13px;color:var(--text3);margin-bottom:28px}
.privacy-card h2{font-size:17px;font-weight:600;margin:28px 0 10px;color:var(--text)}
.privacy-card h3{font-size:15px;font-weight:600;margin:20px 0 8px}
.privacy-card p,.privacy-card li{font-size:14px;color:#475569;margin-bottom:8px}
.privacy-card ul{padding-left:20px;margin-bottom:12px}
.privacy-card a{color:var(--accent)}

@media(max-width:768px){
  .home-layout{flex-direction:column}
  .sidebar{width:100%}
  .sidebar-card{display:flex;flex-wrap:wrap;gap:4px;padding:12px}
  .sidebar-card .sidebar-card-head{width:100%}
  .sidebar-card .bar-item{display:inline-flex;border-left:none;border-bottom:2px solid transparent;padding:8px 12px;border-radius:8px;font-size:12px}
  .sidebar-card .bar-item.active{border-bottom-color:var(--accent);border-left-color:transparent}
  .nav-search{max-width:180px}
  .article-card .article-stats{display:none}
  .compose-box{flex-direction:column;padding:16px}
  .compose-box-actions{flex-direction:row;width:100%}
  .article-detail-header{padding:20px}
  .article-detail-body{padding:20px;font-size:14px}
  .reply-floor-num{width:40px}
  .welcome-card{padding:32px 24px}
  .welcome-card h1{font-size:22px}
}