:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-light:#dbeafe;
  --accent:#f59e0b;
  --danger:#dc2626;
  --success:#16a34a;
  --bg:#f4f7fb;
  --card:#ffffff;
  --text:#1e293b;
  --muted:#64748b;
  --border:#e2e8f0;
  --radius:14px;
  --shadow:0 4px 18px rgba(30,64,175,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none}
.container{width:100%;margin:0 auto;padding:0 24px}

/* 顶部导航 */
.nav{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(0,0,0,.1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;font-size:20px;display:flex;align-items:center;gap:8px}
.logo .badge{background:#fff;color:var(--primary);border-radius:8px;padding:2px 8px;font-size:14px}
.nav-links{display:flex;gap:18px;align-items:center}
.nav-links a{font-size:15px;opacity:.92}
.nav-links a:hover{opacity:1;text-decoration:underline}
.nav-user{display:flex;align-items:center;gap:10px;font-size:14px}
.btn{background:var(--primary);color:#fff;padding:8px 16px;border-radius:10px;font-size:14px;transition:.15s;display:inline-flex;align-items:center;gap:6px}
.btn:hover{background:var(--primary-dark)}
.btn-ghost{background:rgba(255,255,255,.15);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.28)}
.btn-gold{background:linear-gradient(120deg,#f59e0b,#f97316);color:#fff}
.btn-gold:hover{filter:brightness(1.05)}
.btn-outline{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-danger{background:var(--danger);color:#fff}
.btn-dark{background:#334155;color:#fff}
.btn-dark:hover{background:#1e293b}
.btn-sm{padding:5px 12px;font-size:13px;border-radius:8px}
.btn-block{width:100%;justify-content:center;padding:12px}

/* 英雄区 */
.hero{background:linear-gradient(120deg,var(--primary-dark),#3b82f6 60%,#60a5fa);color:#fff;padding:48px 0 40px;text-align:center}
.hero h1{font-size:34px;font-weight:800;letter-spacing:1px}
.hero p{font-size:16px;opacity:.95;margin-top:10px}
.hero .cta{margin-top:22px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* 卡片网格 */
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}}
@media(max-width:560px){.grid-4,.grid-3{grid-template-columns:1fr}}

.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;border:1px solid var(--border)}
.entry{cursor:pointer;transition:.18s;border:1px solid var(--border)}
.entry:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(30,64,175,.16);border-color:var(--primary-light)}
.entry .ico{width:46px;height:46px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:10px}
.entry h3{font-size:17px;margin-bottom:4px}
.entry p{font-size:13px;color:var(--muted)}

.section{margin:30px 0}
.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.section-title h2{font-size:20px}
.section-title a{font-size:13px;color:var(--primary)}

/* 统计 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:8px}
.stat{background:#fff;border-radius:12px;padding:16px;text-align:center;box-shadow:var(--shadow)}
.stat .num{font-size:26px;font-weight:800;color:var(--primary)}
.stat .label{font-size:13px;color:var(--muted);margin-top:4px}

/* 列表项 */
.post-item{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:12px;transition:.15s}
.post-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow)}
.post-item .top{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:6px}
.tag{font-size:12px;padding:2px 9px;border-radius:20px;background:var(--primary-light);color:var(--primary)}
.tag.gray{background:#eef2f7;color:var(--muted)}
.tag.red{background:#fee2e2;color:var(--danger)}
.tag.gold{background:#fef3c7;color:#b45309}
.tag.green{background:#dcfce7;color:var(--success)}
.tag.blue{background:#dbeafe;color:#1d4ed8}
.review-note{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-size:13px;padding:8px 12px;border-radius:8px;margin:10px 0}
.post-item h3{font-size:16px;margin:4px 0}
.post-item .meta{font-size:12px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.post-item .excerpt{font-size:14px;color:#475569;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 表单 */
.form{max-width:680px;margin:0 auto;background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.form h2{margin-bottom:6px}
.form .hint{color:var(--muted);font-size:13px;margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field .req{color:var(--danger)}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}
.field textarea{resize:vertical;min-height:90px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.row2{grid-template-columns:1fr}}
.radios{display:flex;gap:16px;flex-wrap:wrap}
.radios label{display:flex;align-items:center;gap:6px;font-weight:400;font-size:14px;cursor:pointer}

/* 徽标/状态 */
.badge-status{font-size:12px;padding:2px 10px;border-radius:20px}
.st-pending{background:#fef3c7;color:#b45309}
.st-approved{background:#dcfce7;color:var(--success)}
.st-rejected{background:#fee2e2;color:var(--danger)}
.st-deleted{background:#e2e8f0;color:#475569}

/* 详情页 */
.detail-head{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:16px}
.detail-body{font-size:15px;color:#334155;white-space:pre-wrap;margin:14px 0}
.detail-meta{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;background:var(--bg);border-radius:10px;padding:14px;font-size:13px;margin-top:12px}
.detail-meta div b{color:var(--muted);font-weight:600;margin-right:6px}
.actions{display:flex;gap:10px;margin:16px 0;flex-wrap:wrap}

/* 评论 */
.comment{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:10px}
.comment .chead{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:6px}
.comment .help-flag{color:var(--success);font-weight:600}

/* 登录/注册 标签切换与表单内提示 */
.tabs{display:flex;gap:8px;background:#f1f5f9;border-radius:12px;padding:5px}
.tab{flex:1;border:none;background:transparent;padding:10px;border-radius:9px;font-size:14px;cursor:pointer;color:var(--muted);font-weight:600;transition:.2s}
.tab.active{background:#fff;color:var(--primary);box-shadow:0 1px 4px rgba(15,23,42,.1)}
.msg{border-radius:10px;padding:11px 14px;font-size:14px;margin-bottom:14px;line-height:1.5}
.msg.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.msg.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}
.msg.info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}

/* 弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:center;justify-content:center;z-index:100;padding:16px}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:16px;max-width:440px;width:100%;padding:24px;max-height:88vh;overflow:auto}
.modal h3{margin-bottom:6px}
.modal .copy{font-size:14px;color:#475569;background:linear-gradient(120deg,#fffbeb,#fef3c7);border:1px solid #fde68a;border-radius:10px;padding:12px;margin:12px 0;line-height:1.7}
.modal .close{position:absolute}

/* 警告条 */
.alert{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:10px;padding:12px 14px;font-size:13px;margin:14px 0}
.alert.blue{background:#eff6ff;border-color:#bfdbfe;color:#1e40af}

/* 页脚 */
.footer{background:#0f172a;color:#cbd5e1;padding:30px 0;margin-top:40px;font-size:13px}
.footer a{color:#93c5fd}
.footer .cols{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:700px){.footer .cols{grid-template-columns:1fr}}
.footer h4{color:#fff;margin-bottom:8px;font-size:14px}

/* 工具 */
.muted{color:var(--muted)}
.center{text-align:center}
.pay-qr{background:#fff;border:1px dashed var(--border);border-radius:12px;padding:18px;text-align:center}
.pay-qr-ph{width:150px;height:150px;margin:0 auto;border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;line-height:1.7;background:#f8fafc}
.qr-img{width:170px;height:170px;object-fit:contain;display:block;margin:0 auto;background:#fff;border-radius:8px}
.share-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--border)}
.share-label{font-size:13px;color:var(--muted)}
.share-btn{font-size:13px;padding:6px 12px;border:1px solid var(--border);border-radius:999px;background:#fff;cursor:pointer;color:#334155}
.share-btn:hover{background:#f8fafc;border-color:#cbd5e1}
.mt{margin-top:16px}.mb{margin-bottom:16px}
.flex{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spacer{flex:1}
.pill{font-size:12px;background:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:20px}
.empty{text-align:center;color:var(--muted);padding:40px 0}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#1e293b;color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;z-index:200;opacity:0;transition:.25s;pointer-events:none}
.toast.show{opacity:1}

/* 证据上传预览 */
.upload-box{border:2px dashed var(--border);border-radius:12px;padding:14px;text-align:center;color:var(--muted);cursor:pointer;transition:.2s;background:#f8fafc}
.upload-box:hover{border-color:var(--primary);color:var(--primary)}
.upload-previews{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.upload-thumb{width:90px;height:90px;object-fit:cover;border-radius:10px;border:1px solid var(--border)}
.upload-video{width:200px;height:120px;object-fit:cover;border-radius:10px;border:1px solid var(--border);background:#000}
.media-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin:14px 0}
.media-gallery img{width:100%;height:140px;object-fit:cover;border-radius:10px;border:1px solid var(--border);cursor:pointer}
.media-gallery video{width:100%;height:140px;border-radius:10px;background:#000}

/* 头衔进度条 */
.progress-wrap{background:#e2e8f0;border-radius:20px;height:14px;overflow:hidden;margin:10px 0}
.progress-bar{background:linear-gradient(90deg,var(--primary),#60a5fa);height:100%;border-radius:20px;transition:width .4s}
.point-log{list-style:none;padding:0;margin:0}
.point-log li{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px}
.point-log li:last-child{border-bottom:none}
.point-log .delta{font-weight:700}
.point-log .delta.pos{color:#16a34a}
.point-log .delta.neg{color:#dc2626}
.point-log time{font-size:12px;color:var(--muted)}

/* 移动端汉堡菜单（窄屏折叠导航） */
.nav-toggle{display:none;background:rgba(255,255,255,.18);color:#fff;border:none;font-size:22px;line-height:1;padding:6px 12px;border-radius:10px}
.nav-collapse{display:flex;align-items:center;flex:1;justify-content:space-between}
@media(max-width:820px){
  .nav-toggle{display:block}
  .nav-inner{flex-wrap:wrap}
  .nav-collapse{display:none;width:100%;flex-direction:column;align-items:stretch;gap:10px;padding:10px 0 14px}
  .nav-collapse.open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px}
  .nav-links a{padding:9px 4px;border-bottom:1px solid rgba(255,255,255,.14)}
  .nav-actions{justify-content:flex-start;flex-wrap:wrap}
  .nav-actions .btn,.nav-actions .btn-ghost{margin-bottom:6px}
}