:root{--bg: #eef1f6;--panel: #ffffff;--panel-soft: #f8fafc;--text: #26313f;--muted: #7d8796;--line: #dde4ee;--sidebar: #334155;--sidebar-soft: #3d4b61;--sidebar-text: #c7d2e2;--sidebar-active: #60a5fa;--accent: #4f8ef7;--green: #7ac943;--violet: #7b7cf4}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,PingFang SC,sans-serif;background:var(--bg);color:var(--text)}button,input,textarea,select{font:inherit}button{border:0;border-radius:10px;padding:12px 18px;background:var(--accent);color:#fff;cursor:pointer}input,textarea,select{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#fff;color:var(--text)}.admin-shell{min-height:100vh}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px;background:radial-gradient(circle at top left,rgba(79,142,247,.12),transparent 28%),var(--bg)}.login-panel{width:min(1100px,100%);display:grid;grid-template-columns:1.2fr 420px;gap:32px;align-items:center}.login-copy h1{margin:0 0 12px;font-size:clamp(2rem,4vw,3.2rem)}.eyebrow{margin:0 0 14px;color:var(--muted);letter-spacing:.14em;text-transform:uppercase;font-size:.78rem}.lead{margin:0;color:var(--muted);line-height:1.8}.login-card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:0 22px 50px #2d436614}.login-card h2{margin-top:0}.field{display:grid;gap:8px;margin-bottom:16px}.hint{color:var(--muted);font-size:.9rem}.preview-card{border:1px solid var(--line);border-radius:16px;background:var(--panel-soft);padding:16px;margin-bottom:16px}.preview-label{margin-bottom:10px;color:var(--muted);font-size:.88rem}.hero-preview{min-height:180px;border-radius:14px;background-position:center;background-size:cover;background-repeat:no-repeat;box-shadow:inset 0 0 0 1px #ffffff38}.avatar-preview-card{margin-bottom:0}.author-preview{display:flex;align-items:center;gap:16px}.author-preview-image{width:72px;height:72px;border-radius:50%;object-fit:cover;flex-shrink:0}.author-preview p{margin:6px 0 0;color:var(--muted);line-height:1.7}.hidden-file-input{display:none}.inline-upload-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.inline-upload-hint{color:var(--muted);font-size:.92rem}.cropper-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;display:grid;place-items:center;padding:24px;background:#11182780;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.cropper-panel{width:min(1040px,100%);max-height:min(90vh,920px);overflow:auto;border-radius:28px;border:1px solid rgba(255,255,255,.3);background:#f8fafcf5;box-shadow:0 28px 72px #0f172a3d;padding:28px}.cropper-copy h3{margin:0 0 10px}.cover-crop-workspace{display:grid;grid-template-columns:minmax(320px,1.15fr) minmax(260px,.85fr);gap:24px;margin-top:24px}.cover-crop-stage{display:grid;place-items:center;min-height:520px;border-radius:24px;background:linear-gradient(135deg,#4f8ef714,#0f172a14),#edf2f7;padding:28px}.cover-crop-frame{width:min(100%,360px);aspect-ratio:4 / 5;overflow:hidden;border-radius:28px;background:#d9e2ec;box-shadow:0 20px 48px #0f172a2e,inset 0 0 0 1px #ffffff57}.cover-crop-frame img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .18s ease,object-position .18s ease}.cover-crop-controls{display:grid;align-content:start;gap:8px}.cover-crop-controls input[type=range]{padding:0}.cropper-meta{display:grid;gap:6px;margin-top:8px;color:var(--muted);font-size:.92rem}.cropper-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:10px}.admin-frame{height:100vh;display:grid;grid-template-columns:280px 1fr;overflow:hidden}.admin-sidebar{background:linear-gradient(180deg,#3a475c,#334155);color:var(--sidebar-text);padding:18px 0;display:flex;flex-direction:column;transition:width .25s ease;height:100vh;overflow-y:auto;overflow-x:hidden}.sidebar-logo{height:60px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.5rem;font-weight:700;padding:0 20px}.sidebar-nav{padding:18px 12px;display:grid;gap:8px}.nav-group{border-radius:16px;overflow:hidden}.nav-group.active,.nav-group:hover{background:#ffffff0a}.nav-group-trigger{width:100%;background:transparent;border-radius:0;padding:14px 16px;color:var(--sidebar-text);display:flex;align-items:center;justify-content:space-between}.nav-group-label{display:flex;align-items:center;gap:12px}.nav-icon{width:20px;display:inline-flex;justify-content:center;color:var(--sidebar-active)}.nav-arrow{color:#95a3b8}.nav-items{display:grid;gap:4px;padding:0 12px 12px 48px}.nav-item{background:transparent;color:#c2ccdb;text-align:left;padding:10px 12px;border-radius:10px}.nav-item.active{background:#60a5fa29;color:#fff}.admin-main{display:flex;flex-direction:column;min-width:0;min-height:0;height:100vh;overflow:hidden}.admin-topbar{height:76px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:flex-end;padding:0 28px 0 32px}.topbar-user{display:flex;align-items:center;gap:14px;margin-left:auto;width:fit-content;max-width:100%;padding:10px 12px 10px 14px;border:1px solid rgba(221,228,238,.9);border-radius:20px;background:#fffffff0;box-shadow:0 10px 22px #3143600d}.topbar-user strong{display:block;line-height:1.15}.topbar-user p{margin:2px 0 0;color:var(--muted);font-size:.9rem}.topbar-avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#d9e7fb;color:var(--accent);font-weight:700}.topbar-logout{background:transparent;border:1px solid var(--line);color:var(--text);margin-left:6px;padding:10px 16px}.admin-content{padding:28px;display:grid;gap:24px;min-height:0;overflow-y:auto;overflow-x:hidden}.panel-surface{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 28px #3143600d}.welcome-card{padding:28px 32px;display:flex;align-items:center;gap:22px}.welcome-card h2{margin:0 0 8px;font-size:2rem}.welcome-card p{margin:0;color:var(--muted);line-height:1.8}.welcome-avatar{width:92px;height:92px;border-radius:50%;display:grid;place-items:center;background:#d7dde6;color:#fff;font-size:2.4rem;font-weight:700;flex-shrink:0}.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.metric-card{padding:24px;display:flex;align-items:center;gap:18px}.metric-icon{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;font-size:1.6rem;font-weight:700}.metric-icon.violet{background:#7b7cf41f;color:var(--violet)}.metric-icon.blue{background:#4f8ef71f;color:var(--accent)}.metric-icon.green{background:#7ac9431f;color:var(--green)}.metric-body{min-width:0}.metric-label{color:var(--muted);margin-bottom:6px}.metric-value{font-size:3rem;font-weight:700;line-height:1}.metric-foot{margin-top:12px;display:flex;justify-content:space-between;gap:12px;color:var(--green);font-weight:600}.dashboard-panels{display:grid;grid-template-columns:minmax(0,2fr) 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0;color:var(--muted)}.content-stack,.article-manager-shell{display:grid;gap:20px}.article-subhead{margin-bottom:20px}.view-switcher{display:inline-flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;padding:6px;border:1px solid var(--line);border-radius:16px;background:var(--panel-soft)}.view-switcher-button{background:transparent;border:0;color:var(--muted);padding:10px 16px}.view-switcher-button.active{background:#fff;color:var(--text);box-shadow:0 8px 18px #31436014}.article-list-panel{display:grid}.editor-form,.category-panel-form{display:grid;gap:18px}.editor-section{display:grid;gap:16px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--panel-soft)}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:center}.section-head h4{margin:0;font-size:1.08rem}.section-head 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#f3c7c2;color:#c0392b}.row-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.table-row-actions{align-items:center}.editor-toolbar{display:flex;flex-wrap:wrap;gap:10px}.photo-toolbox{display:grid;gap:12px;padding:14px 16px;border:1px dashed #c9d5e5;border-radius:14px;background:#4f8ef70d}.photo-toolbox-head{display:flex;justify-content:space-between;gap:16px;align-items:center}.photo-toolbox-head span{color:var(--muted);font-size:.9rem}.editor-workspace{display:grid;grid-template-columns:minmax(0,var(--editor-split, 50%)) 20px minmax(0,calc(100% - var(--editor-split, 50%) - 20px));gap:0;min-height:520px;align-items:stretch}.editor-pane{display:grid;grid-template-rows:auto minmax(0,1fr);gap:12px;min-width:0;min-height:0}.editor-pane-head{display:flex;align-items:center;min-height:32px}.editor-resizer{position:relative;align-self:stretch;justify-self:center;width:20px;min-width:20px;padding:0;border-radius:0;background:transparent;cursor:col-resize}.editor-resizer-line{position:absolute;top:50%;left:50%;width:6px;height:96px;transform:translate(-50%,-50%);border-radius:999px;background:#c3cfdf;box-shadow:0 0 0 1px #ffffffa6}.markdown-input{height:520px;min-height:520px;max-height:520px;padding:18px;border:1px solid var(--line);border-radius:20px;background:#fff;line-height:1.8;color:var(--text);overflow-y:auto;overflow-x:hidden;resize:none}.preview-meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.9rem}.markdown-preview{height:520px;min-height:520px;max-height:520px;padding:18px;border:1px solid var(--line);border-radius:20px;background:#fff;line-height:1.8;min-width:0;overflow-y:auto;overflow-x:hidden}.markdown-preview h1,.markdown-preview h2,.markdown-preview h3{margin:1.2em 0 .45em}.markdown-preview h1:first-child,.markdown-preview h2:first-child,.markdown-preview h3:first-child{margin-top:0}.markdown-preview p,.markdown-preview ul,.markdown-preview ol,.markdown-preview blockquote,.markdown-preview pre,.markdown-preview table,.markdown-preview hr{margin:0 0 1rem}.markdown-preview ul,.markdown-preview ol{padding-left:1.4rem}.markdown-preview blockquote{margin-left:0;padding-left:1rem;border-left:3px solid rgba(79,142,247,.3);color:var(--muted)}.markdown-preview hr{border:0;border-top:1px solid #b8c4d4}.markdown-preview table{width:fit-content;max-width:100%;display:block;border-collapse:collapse;overflow-x:auto;overflow-y:hidden;border:1px solid #b8c4d4;border-radius:14px;background:#fff}.markdown-preview th,.markdown-preview td{padding:12px 14px;border-right:1px solid #b8c4d4;border-bottom:1px solid #b8c4d4;text-align:left;vertical-align:top;white-space:normal;overflow-wrap:anywhere;word-break:break-word}.markdown-preview th{background:#edf2f7;font-weight:700}.markdown-preview th:last-child,.markdown-preview td:last-child{border-right:0}.markdown-preview tbody tr:last-child td{border-bottom:0}.markdown-preview code{padding:.14rem .35rem;border-radius:.35rem;background:#eef3fa;font-family:SFMono-Regular,Menlo,monospace;white-space:break-spaces;overflow-wrap:anywhere}.markdown-preview pre{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:1rem;border-radius:1rem;background:#162031;color:#f8fafc}.markdown-preview pre code{padding:0;background:transparent;color:inherit;white-space:pre;overflow-wrap:normal}.markdown-preview img{display:block;width:auto;max-width:100%;max-height:min(70vh,720px);height:auto;margin:0 auto;border-radius:18px;object-fit:contain}.markdown-preview .image-block,.markdown-preview .photo-card{margin:1.4rem 0}.markdown-preview .image-block{display:grid;justify-items:center}.markdown-preview .photo-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:1.5rem 0}.markdown-preview .photo-card img,.markdown-preview .gallery-item img{aspect-ratio:4 / 5;object-fit:cover}.markdown-preview .image-block figcaption,.markdown-preview .photo-card figcaption,.markdown-preview .gallery-item figcaption{margin-top:.65rem;color:var(--muted);font-size:.92rem}.markdown-preview-photo{background:linear-gradient(180deg,#fffffff5,#f8fafcf5),#fff}.markdown-preview .code-window{overflow:hidden;border-radius:18px;background:#1f2430;max-width:100%}.markdown-preview .code-window-bar{display:flex;align-items:center;justify-content:space-between;min-height:40px;padding:0 14px;background:linear-gradient(180deg,#d6e2f1,#c6d5e7)}.markdown-preview .code-window-dots{display:inline-flex;gap:8px}.markdown-preview .code-window-dots i{width:12px;height:12px;border-radius:50%;display:block}.markdown-preview .code-window-dots i:nth-child(1){background:#ff5f57}.markdown-preview .code-window-dots i:nth-child(2){background:#ffbd2f}.markdown-preview .code-window-dots i:nth-child(3){background:#28c840}.markdown-preview .code-window-language{color:#475569;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}.markdown-preview .code-window pre{margin:0;border-radius:0}.placeholder-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.placeholder-card{border:1px solid var(--line);border-radius:14px;padding:18px;background:var(--panel-soft)}.placeholder-card strong{display:block;margin-bottom:8px}.placeholder-card p{margin:0;color:var(--muted);line-height:1.7}.error{color:#c0392b}.notice{color:#2c7a4b}@media (max-width: 1100px){.metric-grid,.dashboard-panels,.placeholder-grid,.form-grid,.form-grid-wide,.editor-workspace,.cover-crop-workspace{grid-template-columns:1fr}.cover-crop-stage{min-height:420px}.markdown-preview .photo-gallery{grid-template-columns:1fr}}@media (max-width: 900px){.login-panel,.admin-frame{grid-template-columns:1fr}.admin-sidebar{min-height:auto}.admin-content,.login-screen{padding:18px}.admin-topbar,.welcome-card{align-items:flex-start}.admin-topbar,.welcome-card{flex-direction:column}.topbar-user{align-items:flex-start;flex-direction:column}.card-head{align-items:flex-start}.view-switcher{width:100%;justify-content:flex-start}.editor-workspace{grid-template-columns:1fr;gap:16px}.editor-resizer{display:none}.markdown-input,.markdown-preview{height:420px;min-height:420px;max-height:420px}}