.admin-topbar{display:flex;align-items:center;gap:12px;padding:0 24px;height:54px;background:var(--bg-secondary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.admin-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary);font-size:14px;font-weight:600}.admin-brand:hover{color:var(--text-primary);text-decoration:none}.admin-logo{width:28px;height:28px;border-radius:50%;background:url(/logo.png) center / cover;border:1.5px solid var(--accent-blue);flex-shrink:0}.admin-badge{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;background:#88c0d01f;color:var(--accent-blue);border:1px solid rgba(136,192,208,.25);border-radius:4px;padding:2px 7px}.user-chip{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-left:auto}.user-chip img{width:28px;height:28px;border-radius:50%;border:1.5px solid var(--border)}.btn-google{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#1f1f1f;border:none;border-radius:8px;padding:11px 24px;font-size:14px;font-weight:500;cursor:pointer;font-family:Inter,sans-serif;transition:box-shadow .15s}.btn-google:hover{box-shadow:0 2px 16px #00000059}.btn-sm{background:none;border:1px solid var(--border);color:var(--text-secondary);border-radius:7px;padding:5px 12px;font-size:12px;cursor:pointer;font-family:Inter,sans-serif;transition:background .12s,color .12s;white-space:nowrap}.btn-sm:hover{background:var(--bg-tertiary);color:var(--text-primary)}.btn-sm.copied{color:var(--accent-green);border-color:#a3be8c66}.btn-publish{display:inline-flex;align-items:center;gap:8px;background:var(--accent-blue);color:var(--bg-primary);border:none;border-radius:8px;padding:10px 28px;font-size:14px;font-weight:600;cursor:pointer;font-family:Inter,sans-serif;transition:opacity 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14px;background:var(--bg-tertiary);border-bottom:1px solid var(--border);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-muted);flex-shrink:0}.editor-textarea{display:block;width:100%;flex:1;min-height:460px;background:transparent;border:none;color:var(--text-primary);font-family:JetBrains Mono,Fira Code,Courier New,monospace;font-size:13.5px;line-height:1.75;padding:16px 18px;resize:vertical}.editor-textarea:focus{outline:none}.preview-body{flex:1;min-height:460px;padding:16px 20px;overflow-y:auto;color:var(--text-secondary);font-size:15px;line-height:1.85}.preview-body h1,.preview-body h2,.preview-body h3,.preview-body h4{font-weight:600;color:var(--text-primary);margin-top:1.6em;margin-bottom:.5em}.preview-body h2{font-size:1.2rem;color:var(--accent-blue)}.preview-body h3{font-size:1.05rem}.preview-body p{margin-bottom:.9em}.preview-body strong{color:var(--text-primary)}.preview-body code{background:var(--bg-tertiary);color:var(--accent-orange);padding:2px 6px;border-radius:4px;font-size:.87em;font-family:JetBrains Mono,monospace}.preview-body pre{background:var(--bg-primary);border:1px solid var(--border);border-radius:8px;padding:12px 16px;overflow-x:auto;margin:.8em 0}.preview-body pre code{background:none;padding:0}.preview-body ul,.preview-body ol{padding-left:1.5em;margin-bottom:.8em}.preview-body li{margin-bottom:.2em}.preview-body blockquote{border-left:3px solid var(--accent-blue);padding:2px 0 2px 16px;color:var(--text-muted);font-style:italic;margin:.8em 0}.preview-body table{width:100%;border-collapse:collapse;margin:.8em 0;font-size:14px}.preview-body th{background:var(--bg-tertiary);padding:8px 12px;text-align:left;border-bottom:1px solid var(--border)}.preview-body td{padding:8px 12px;border-bottom:1px solid var(--border-sub)}.status-msg{font-size:13px;padding:8px 16px;border-radius:8px}.status-ok{background:#a3be8c26;color:var(--accent-green)}.status-err{background:#bf616a26;color:var(--accent-red)}.status-info{color:var(--text-muted)}.slug-hint{font-size:11px;color:var(--text-muted);margin-top:4px;min-height:16px}@media(max-width:900px){.meta-grid{grid-template-columns:1fr 1fr}.editor-split{grid-template-columns:1fr}}@media(max-width:576px){.meta-grid{grid-template-columns:1fr}.admin-body{padding:20px 14px 60px}.auth-card{padding:32px 20px}.admin-topbar{padding:0 16px}}:root{--bg-primary: #2e3440;--bg-secondary: #3b4252;--bg-tertiary: #434c5e;--text-primary: #eceff4;--text-secondary: #d8dee9;--text-muted: #7b88a1;--accent-blue: #88c0d0;--accent-orange: #ebcb8b;--accent-green: #a3be8c;--accent-yellow: #ebcb8b;--accent-red: #bf616a;--border: #4c566a;--border-sub: #434c5e;--sidebar-w: 260px;--topbar-h: 54px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);font-family:Inter,system-ui,sans-serif;font-size:15px;line-height:1.65}a{color:var(--accent-blue);text-decoration:none}a:hover{text-decoration:underline}::selection{background:var(--accent-blue);color:var(--bg-primary)}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:200;overflow-y:auto}.sidebar-brand{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border);color:var(--text-primary);text-decoration:none}.sidebar-brand:hover{color:var(--text-primary);text-decoration:none}.s-avatar{width:34px;height:34px;border-radius:50%;background:url(/logo.png) center / cover;border:2px solid var(--accent-blue);flex-shrink:0}.s-name{font-size:14px;font-weight:600;white-space:nowrap}.cursor{animation:blink 1.2s step-end infinite}@keyframes blink{50%{opacity:0}}.sidebar-nav{flex:1;padding:8px 0}.nav-section{margin-bottom:2px}.nav-section-label{display:block;font-size:10.5px;font-weight:600;text-transform:uppercase;letter-spacing:.9px;color:var(--text-muted);padding:12px 20px 5px}.nav-link-item{display:flex;align-items:center;gap:10px;padding:7px 20px;font-size:13.5px;color:var(--text-secondary);text-decoration:none;border-left:2px solid transparent;transition:background .12s,color .12s,border-color .12s}.nav-link-item:hover{color:var(--text-primary);background:#ffffff0d;text-decoration:none}.nav-link-item.active{color:var(--accent-blue);background:#88c0d01a;border-left-color:var(--accent-blue);font-weight:500}.nav-link-item i{font-size:14px;width:16px;text-align:center;flex-shrink:0}.sidebar-footer{padding:14px 20px;border-top:1px solid var(--border);font-size:11px;color:var(--text-muted);line-height:1.5}.topbar{display:none;align-items:center;gap:12px;height:var(--topbar-h);padding:0 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:150}.topbar-logo{width:28px;height:28px;border-radius:50%;background:url(/logo.png) center / cover;border:1.5px solid var(--accent-blue);flex-shrink:0}.topbar-name{flex:1;font-size:14px;font-weight:600}.topbar-toggle{background:none;border:none;color:var(--text-secondary);font-size:22px;padding:4px 6px;cursor:pointer;border-radius:6px;line-height:1}.topbar-toggle:hover{color:var(--text-primary);background:var(--bg-tertiary)}.offcanvas{background:var(--bg-secondary)!important;color:var(--text-primary)!important;width:var(--sidebar-w)!important}.offcanvas-header{padding:16px 20px;border-bottom:1px solid var(--border)}.main-content{margin-left:var(--sidebar-w);overflow-x:hidden}.page-body{margin:0 auto;padding:48px 32px 80px}.page-header{margin-bottom:32px}.page-icon{font-size:2rem;color:var(--accent-blue);margin-bottom:10px}.page-title{font-size:1.6rem;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}.page-subtitle{color:var(--text-muted);font-size:14px}.calc-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:14px;padding:32px}.field-label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-muted);margin-bottom:8px}.dark-input,.dark-select{width:100%;background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-primary);border-radius:8px;padding:10px 14px;font-size:15px;font-family:Inter,sans-serif;transition:border-color .15s,box-shadow .15s;-moz-appearance:none;appearance:none;-webkit-appearance:none;color-scheme:dark}.dark-input:focus,.dark-select:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px #88c0d026}.dark-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236e7681' d='M6 8L0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}.hero-avatar{width:82px;height:82px;border-radius:50%;background:url(/logo.png) center / cover;border:3px solid var(--accent-blue);box-shadow:0 0 0 5px #88c0d026;flex-shrink:0}.MathJax{color:var(--text-primary)!important}@media(max-width:991px){.sidebar{display:none!important}.main-content{margin-left:0}.topbar{display:flex}.page-body{padding:24px 20px 60px}.hero{flex-direction:column;text-align:center;padding:24px;gap:16px}.hero-name{font-size:1.5rem}}@media(max-width:576px){.page-body{padding:16px 12px 48px}.post-card{padding:20px}.hero-avatar{width:68px;height:68px}}.hero{display:flex;align-items:center;gap:24px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:14px;padding:28px 32px;margin-bottom:40px}.hero-avatar{width:82px;height:82px;border-radius:50%;background:url(/logo.png) center / cover;border:3px solid var(--accent-blue);box-shadow:0 0 0 5px #88c0d026;flex-shrink:0}.hero-name{font-size:1.8rem;font-weight:700;letter-spacing:-.025em;line-height:1.15}.hero-desc{color:var(--text-secondary);font-size:13.5px;margin-top:6px}.post-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:28px 32px;margin-bottom:14px;transition:border-color .2s,box-shadow .2s}.post-card:hover{border-color:#88c0d066;box-shadow:0 4px 28px #0000004d}.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}.topic-badge{display:inline-flex;align-items:center;background:#88c0d01a;color:var(--accent-blue);border:1px solid rgba(136,192,208,.22);border-radius:20px;font-size:11px;font-weight:600;padding:2px 10px;text-transform:uppercase;letter-spacing:.4px;text-decoration:none}.topic-badge:hover{background:#88c0d033;text-decoration:none;color:var(--accent-blue)}.meta-chip{color:var(--text-muted);font-size:12px;display:flex;align-items:center;gap:4px}.post-title{font-size:1.25rem;font-weight:600;color:var(--text-primary);font-family:"Source Serif 4",Georgia,serif;margin-bottom:16px;line-height:1.45}.md-body{color:var(--text-secondary);font-size:15px;line-height:1.85}.md-body h1,.md-body h2,.md-body h3,.md-body h4{font-family:"Source Serif 4",Georgia,serif;font-weight:600;color:var(--text-primary);margin-top:1.8em;margin-bottom:.6em}.md-body h1{font-size:1.5rem}.md-body h2{font-size:1.25rem;color:var(--accent-blue)}.md-body h3{font-size:1.1rem}.md-body p{margin-bottom:1em}.md-body strong{color:var(--text-primary);font-weight:600}.md-body em{color:var(--text-secondary)}.md-body code{background:var(--bg-tertiary);color:var(--accent-orange);padding:2px 6px;border-radius:4px;font-size:.87em;font-family:JetBrains Mono,Fira Code,monospace}.md-body pre{background:#2e3440;border:1px solid var(--border);border-radius:8px;padding:14px 18px;overflow-x:auto;margin:1em 0}.md-body pre code{background:none;color:var(--text-primary);padding:0;font-size:14px}.md-body pre code.hljs{background:transparent;padding:0}.md-body ul,.md-body ol{padding-left:1.5em;margin-bottom:1em}.md-body li{margin-bottom:.25em}.md-body blockquote{border-left:3px solid var(--accent-blue);padding:2px 0 2px 16px;color:var(--text-muted);font-style:italic;margin:1em 0}.md-body img{max-width:100%;height:auto;display:block}.md-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1em 0;font-size:14px}.md-body th{background:var(--bg-tertiary);padding:9px 14px;text-align:left;font-weight:600;border-bottom:1px solid var(--border)}.md-body td{padding:9px 14px;border-bottom:1px solid var(--border-sub)}.field-group{margin-bottom:24px}.offcanvas.show{display:block}.btn-close-white{filter:invert(1)}.offcanvas-start{width:var(--sidebar-w)}.offcanvas-body{overflow-y:auto}