:root{--bg:#f5f7fb;--panel:#ffffff;--panel2:#f8fafc;--text:#162033;--muted:#64748b;--border:#e2e8f0;--primary:#2563eb;--primary2:#1d4ed8;--danger:#dc2626;--success:#16a34a;--shadow:0 18px 45px rgba(15,23,42,.08);--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(135deg,var(--bg),#eef4ff);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(1180px,calc(100% - 28px));margin:0 auto}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}.header-inner{min-height:72px;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:var(--text);min-width:190px}.brand:hover{text-decoration:none}.brand-mark{width:42px;height:42px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),#7c3aed);color:white;font-weight:800;box-shadow:0 8px 22px rgba(37,99,235,.3)}.brand small{display:block;color:var(--muted);font-size:12px;font-weight:400}.nav{display:flex;align-items:center;gap:6px;flex:1}.nav a{color:var(--text);padding:9px 12px;border-radius:12px}.nav a:hover{background:var(--panel2);text-decoration:none}.header-actions{display:flex;align-items:center;gap:8px}.search-mini input{width:170px;border:1px solid var(--border);background:var(--panel2);border-radius:999px;padding:9px 12px;color:var(--text)}.nav-toggle{display:none}.btn{border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:12px;padding:10px 16px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;line-height:1.2}.btn:hover{text-decoration:none;filter:brightness(.98)}.btn.small{font-size:13px;padding:7px 11px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));border-color:transparent;color:#fff}.btn-ghost{background:transparent}.btn-danger{background:var(--danger);border-color:var(--danger);color:white}.main{padding:24px 0 44px}.site-footer{border-top:1px solid var(--border);padding:24px 0;color:var(--muted)}.footer-inner{display:flex;justify-content:space-between;gap:10px}.hero,.category-hero,.topic-head,.profile-head{background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(124,58,237,.10));border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.category-hero{background:linear-gradient(135deg,color-mix(in srgb,var(--cat) 15%,transparent),rgba(255,255,255,.65))}.hero h1,.category-hero h1,.topic-head h1,.profile-head h1{margin:0 0 6px;font-size:34px;line-height:1.2}.hero p,.category-hero p{margin:0;color:var(--muted)}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.grid{display:grid;gap:18px}.two-col{grid-template-columns:minmax(0,1fr) 330px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.panel.narrow,.auth-card{max-width:720px;margin:0 auto}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.panel-head h2{font-size:22px;margin:0}.panel-head span{color:var(--muted)}.category-list{display:flex;flex-direction:column;gap:12px}.category-card{display:grid;grid-template-columns:54px 1fr auto;gap:14px;align-items:center;padding:16px;border:1px solid var(--border);border-radius:16px;background:linear-gradient(180deg,var(--panel),var(--panel2))}.cat-icon{width:54px;height:54px;border-radius:17px;display:flex;align-items:center;justify-content:center;color:white;font-weight:900;font-size:20px}.cat-body h3{margin:0 0 4px}.cat-body p{margin:0 0 6px;color:var(--muted)}.latest-line{font-size:13px;color:var(--muted)}.cat-stats{min-width:95px;display:grid;grid-template-columns:1fr 1fr;gap:0 10px;text-align:center}.cat-stats strong{font-size:22px}.cat-stats span{font-size:12px;color:var(--muted);margin-bottom:5px}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.stat-grid.wide{grid-template-columns:repeat(6,1fr)}.stat-grid div{background:var(--panel2);border:1px solid var(--border);border-radius:16px;padding:16px;text-align:center}.stat-grid strong{display:block;font-size:28px}.stat-grid span{color:var(--muted)}.tag-cloud{display:flex;gap:8px;flex-wrap:wrap}.tag-cloud.large{gap:12px}.tag{display:inline-flex;gap:5px;align-items:center;background:var(--panel2);border:1px solid var(--border);border-radius:999px;padding:5px 10px;font-size:13px;color:var(--text)}.tag:hover{border-color:var(--primary);text-decoration:none}.tabs,.admin-nav{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}.tabs.right-tabs{justify-content:flex-end}.tabs a,.admin-nav a{padding:9px 13px;border:1px solid var(--border);border-radius:999px;color:var(--text);background:var(--panel)}.tabs a.active,.admin-nav a.active{background:var(--primary);border-color:var(--primary);color:white}.topic-card{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding:16px;border:1px solid var(--border);border-radius:16px;background:var(--panel);margin-bottom:12px}.topic-card.pinned{border-color:rgba(37,99,235,.45);box-shadow:0 10px 28px rgba(37,99,235,.08)}.topic-title-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.topic-title-row h3{margin:0;font-size:18px}.topic-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-top:7px}.topic-meta.big{font-size:14px}.topic-excerpt{margin:10px 0 0;color:var(--muted)}.topic-stats{display:flex;gap:10px;text-align:center}.topic-stats div{min-width:64px;background:var(--panel2);border:1px solid var(--border);border-radius:14px;padding:10px}.topic-stats strong{display:block;font-size:20px}.topic-stats span{font-size:12px;color:var(--muted)}.state{font-size:12px;border-radius:999px;padding:3px 8px;color:white}.state-pin{background:#f59e0b}.state-lock{background:#64748b}.cat-pill{display:inline-flex;align-items:center;padding:3px 8px;border-radius:999px;border:1px solid color-mix(in srgb,var(--cat) 40%,var(--border));background:color-mix(in srgb,var(--cat) 12%,transparent);color:var(--text)}.user-link,.user-chip{display:inline-flex;align-items:center;gap:6px;color:var(--text)}.user-chip{background:var(--panel2);padding:6px 9px;border-radius:999px}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;color:#fff;font-weight:900;vertical-align:middle;flex:none}.avatar-sm{width:24px;height:24px;font-size:12px}.avatar-md{width:36px;height:36px}.avatar-lg{width:58px;height:58px;font-size:22px}.avatar-xl{width:92px;height:92px;font-size:36px}.badge{display:inline-flex;border-radius:999px;color:white;font-size:11px;padding:2px 7px;margin-top:4px}.muted{color:var(--muted)}.breadcrumb{color:var(--muted);font-size:13px;margin-bottom:6px}.mini-stats{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted)}.mini-stats span{background:var(--panel2);border:1px solid var(--border);border-radius:999px;padding:4px 9px}.topic-head-row{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;width:100%}.post-list{display:flex;flex-direction:column;gap:14px}.post{display:grid;grid-template-columns:170px 1fr;gap:18px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.post-author{border-right:1px solid var(--border);padding-right:16px;display:flex;flex-direction:column;gap:7px;align-items:flex-start}.post-body{min-width:0}.post-top{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin-bottom:10px}.content{font-size:16px;word-break:break-word}.content code{background:var(--panel2);border:1px solid var(--border);padding:1px 5px;border-radius:6px}.attachments{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.attachments img{width:160px;max-height:120px;object-fit:cover;border-radius:12px;border:1px solid var(--border)}.post-actions{margin-top:14px;display:flex;gap:10px}.reply-panel{margin-top:18px}.guest-box{text-align:center;padding:16px}.auth-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.form{display:flex;flex-direction:column;gap:14px}.form label{display:flex;flex-direction:column;gap:6px;font-weight:700}.form small{color:var(--muted);font-weight:400}.form input,.form textarea,.form select{width:100%;border:1px solid var(--border);background:var(--panel2);color:var(--text);border-radius:12px;padding:11px 12px;font:inherit}.form textarea{resize:vertical}.inline-form{flex-direction:row;align-items:end}.alert{border-radius:14px;padding:12px 14px;margin-bottom:14px;border:1px solid var(--border)}.alert.success{background:#ecfdf5;color:#166534;border-color:#bbf7d0}.alert.error{background:#fef2f2;color:#991b1b;border-color:#fecaca}.empty{padding:26px;text-align:center;color:var(--muted);background:var(--panel2);border:1px dashed var(--border);border-radius:16px}.user-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}.user-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:18px;border:1px solid var(--border);border-radius:16px;background:var(--panel2);color:var(--text)}.user-card:hover{text-decoration:none;border-color:var(--primary)}.user-card span,.user-card small{color:var(--muted)}.profile-head{justify-content:flex-start}.simple-row{border-bottom:1px solid var(--border);padding:12px 0}.simple-row:last-child{border-bottom:0}.simple-row span{float:right;color:var(--muted);font-size:13px}.simple-row p{margin:5px 0 0;color:var(--muted)}.table-like{display:flex;flex-direction:column}.table-head,.table-row{display:grid;grid-template-columns:1.2fr .5fr 1fr;gap:12px;align-items:center;padding:12px;border-bottom:1px solid var(--border)}.table-head{color:var(--muted);font-weight:800;background:var(--panel2);border-radius:12px;border-bottom:0}.table-row{color:var(--text)}.table-row:hover{text-decoration:none;background:var(--panel2)}.table-row small{display:block;color:var(--muted)}.dot{width:12px;height:12px;display:inline-block;border-radius:50%;margin-right:7px}.admin-nav{background:var(--panel);border:1px solid var(--border);padding:10px;border-radius:var(--radius);box-shadow:var(--shadow)}.inline-actions{display:flex;gap:6px;flex-wrap:wrap}.member-line{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:8px 0}.theme-dropdown{position:relative}.theme-menu{display:none;position:absolute;right:0;top:38px;width:220px;max-height:360px;overflow:auto;background:var(--panel);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:8px;z-index:20}.theme-menu.open{display:grid;grid-template-columns:1fr 1fr;gap:4px}.theme-menu a{padding:7px 8px;border-radius:10px;color:var(--text)}.theme-menu a:hover{background:var(--panel2);text-decoration:none}.theme-darkly,.theme-cyborg,.theme-slate,.theme-solar,.theme-superhero,.theme-vapor{--bg:#0f172a;--panel:#111827;--panel2:#1f2937;--text:#e5e7eb;--muted:#94a3b8;--border:#334155;--shadow:0 18px 45px rgba(0,0,0,.25)}.theme-darkly{--primary:#60a5fa;--primary2:#2563eb}.theme-cyborg{--primary:#22d3ee;--primary2:#0891b2}.theme-slate{--primary:#94a3b8;--primary2:#64748b}.theme-solar{--bg:#111827;--panel:#1f2937;--panel2:#374151;--primary:#f59e0b;--primary2:#d97706}.theme-superhero{--primary:#8b5cf6;--primary2:#6d28d9}.theme-vapor{--primary:#ec4899;--primary2:#8b5cf6}.theme-cerulean{--primary:#0ea5e9;--primary2:#0284c7}.theme-flatly{--primary:#16a34a;--primary2:#15803d}.theme-journal{--primary:#dc2626;--primary2:#b91c1c}.theme-minty{--primary:#14b8a6;--primary2:#0f766e}.theme-pulse{--primary:#7c3aed;--primary2:#5b21b6}.theme-united{--primary:#ea580c;--primary2:#c2410c}.theme-yeti{--primary:#64748b;--primary2:#475569}.theme-zephyr{--primary:#2563eb;--primary2:#1e40af}.theme-sketchy{--radius:24px}.theme-lux{--text:#111827;--primary:#111827;--primary2:#334155}.theme-morph{--bg:#eef2ff;--panel:#ffffffaa;--panel2:#eef2ff}.theme-spacelab{--primary:#4f46e5;--primary2:#3730a3}.theme-sandstone{--primary:#a16207;--primary2:#854d0e}.theme-simplex{--primary:#e11d48;--primary2:#be123c}.theme-brite{--primary:#f97316;--primary2:#2563eb}.theme-cosmo{--primary:#2780e3;--primary2:#1967be}.theme-litera{--primary:#4582ec;--primary2:#2b62c4}.theme-lumen{--primary:#158cba;--primary2:#0f6687}.theme-materia{--primary:#2196f3;--primary2:#1976d2}@media(max-width:980px){.two-col{grid-template-columns:1fr}.header-inner{flex-wrap:wrap;padding:10px 0}.nav{order:3;width:100%;display:none;flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav-toggle{display:block;border:1px solid var(--border);background:var(--panel);border-radius:10px;padding:8px 10px}.header-actions{margin-left:auto;flex-wrap:wrap}.search-mini{display:none}.hero,.category-hero,.topic-head{flex-direction:column;align-items:flex-start}.stat-grid.wide{grid-template-columns:repeat(2,1fr)}.post{grid-template-columns:1fr}.post-author{border-right:0;border-bottom:1px solid var(--border);padding-right:0;padding-bottom:12px}.topic-card{grid-template-columns:1fr}.topic-stats{justify-content:space-between}.category-card{grid-template-columns:44px 1fr}.cat-icon{width:44px;height:44px}.cat-stats{grid-column:1/-1;display:flex;justify-content:flex-start}.table-head,.table-row{grid-template-columns:1fr}.footer-inner{flex-direction:column}.inline-form{flex-direction:column;align-items:stretch}}

.inline-post-image{display:block;max-width:100%;max-height:720px;border-radius:14px;border:1px solid var(--border);margin:12px 0;object-fit:contain;background:var(--panel2)}
.inline-image-link{display:block;width:100%;max-width:100%;overflow:hidden}
.image-insert-tips{font-size:13px;color:var(--muted);background:var(--panel2);border:1px dashed var(--border);border-radius:12px;padding:10px 12px}
.image-insert-list{display:flex;gap:8px;flex-wrap:wrap}
.image-insert-btn{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* 修复帖子正文图片、长文字、长链接撑破页面的问题 */
.post,
.post-body,
.content {
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.content {
    overflow: hidden;
}

/* 正文内所有图片都强制限制在帖子宽度内 */
.content img,
.inline-post-image {
    display: block;
    width: auto !important;
    max-width: 100% !important;
    height: auto !important;
    max-height: 72vh;
    object-fit: contain;
    border-radius: 14px;
    border: 1px solid var(--border);
    margin: 12px 0;
    background: var(--panel2);
}

/* 图片外层链接不允许撑开帖子 */
.inline-image-link {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow: hidden;
}

/* 超长网址、英文、连续字符自动换行 */
.content a {
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-all;
}

/* 代码、预格式内容不撑破页面 */
.content pre,
.content code {
    max-width: 100%;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
}

/* 表格、视频、iframe 等也限制在帖子正文宽度内 */
.content table,
.content video,
.content iframe {
    max-width: 100%;
}

/* 移动端进一步控制图片高度 */
@media (max-width: 768px) {
    .content img,
    .inline-post-image {
        max-height: 60vh;
    }
}