:root{--bg:#fff;--ink:#101a3c;--body:#33415e;--muted:#64748b;--accent:#2440c8;--accent2:#2b4bd8;--deep:#1d2fa0;--tint:#eef3ff;--tint2:#f7f9ff;--line:#e7ecf7;--footer:#152560;--radius:16px;--shadow:0 10px 30px rgba(20,40,120,.07)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--body);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:700}
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:.04em}
.logo .mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--accent2),var(--deep));color:#fff;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:800}
.logo small{font-size:11px;color:var(--muted);font-weight:400;letter-spacing:.12em;margin-left:2px}
nav.main{display:flex;gap:30px;font-size:15px;color:var(--ink)}
nav.main a{color:var(--ink);opacity:.85}
nav.main a:hover{opacity:1;color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;border-radius:999px;padding:11px 26px;font-size:15px;font-weight:600;transition:.2s;border:none;cursor:pointer}
.btn:hover{background:var(--deep)}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn.ghost:hover{background:var(--tint)}
.news-page{padding:44px 0 90px}
.crumb{font-size:13px;color:var(--muted);display:flex;gap:8px;margin-bottom:26px}
.crumb a{color:var(--muted)}.crumb a:hover{color:var(--accent)}
.crumb b{color:var(--ink);font-weight:600}
.page-title{font-size:32px;margin-bottom:36px}
.post-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 22px;display:flex;flex-direction:column;transition:.25s}
.post:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.post time{font-size:12.5px;color:var(--muted);letter-spacing:.05em}
.post h3{font-size:16.5px;margin:10px 0 8px;line-height:1.5}
.post h3 a{color:var(--ink)}
.post h3 a:hover{color:var(--accent)}
.post p{font-size:13.5px;color:var(--muted);flex:1}
.post .more{margin-top:14px;font-size:13.5px;font-weight:600}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:60px 0}
.pager{display:flex;justify-content:center;align-items:center;gap:22px;margin-top:44px;font-size:14px;color:var(--muted)}
.pager a{color:var(--accent)}
.art{max-width:780px;margin:0 auto}
.art h1{font-size:30px;line-height:1.45;margin-bottom:14px}
.art .meta{font-size:13px;color:var(--muted);margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.art .cover{border-radius:14px;margin-bottom:26px;aspect-ratio:1200/630;object-fit:cover}
.art-body{font-size:16px}
.art-body p{margin:0 0 18px}
.art-body h2{font-size:24px;margin:34px 0 14px}
.art-body h3{font-size:19px;margin:28px 0 12px}
.art-body h4{font-size:16.5px;margin:22px 0 10px}
.art-body ul{margin:0 0 18px 22px}
.art-body li{margin-bottom:6px}
.art-body a{text-decoration:underline;text-underline-offset:3px}
.art-body img{border-radius:12px;margin:8px 0 18px}
.art-body blockquote{border-left:3px solid var(--accent2);background:var(--tint2);padding:12px 18px;border-radius:0 10px 10px 0;margin-bottom:18px;color:var(--body)}
.art-body blockquote p:last-child{margin-bottom:0}
.art-body pre{background:#0f1a3d;color:#dbe4ff;border-radius:12px;padding:16px 18px;overflow:auto;margin-bottom:18px;font-size:13.5px;line-height:1.6}
.art-body code{background:var(--tint);border-radius:5px;padding:1px 7px;font-size:.92em;color:var(--deep)}
.art-body pre code{background:none;color:inherit;padding:0}
.art-body hr{border:none;border-top:1px solid var(--line);margin:26px 0}
.art-body strong{color:var(--ink)}
.art-nav{max-width:780px;margin:44px auto 0;display:flex;justify-content:space-between;gap:14px;font-size:14px}
.art-nav a{color:var(--ink);opacity:.8}
.art-nav a:hover{color:var(--accent);opacity:1}
.related{max-width:1160px;margin-top:70px}
.related h2{font-size:22px;margin-bottom:22px}
.nf404{text-align:center;padding:100px 0}
.nf404 h1{font-size:64px;color:var(--deep)}
.nf404 p{color:var(--muted);margin:10px 0 26px}
.nf404 .btn{margin:0 6px}
footer{background:var(--footer);color:#93a5dd;margin-top:90px;font-size:13.5px}
.ft-in{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:56px 0 40px}
.ft-in h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
.ft-in a{color:#93a5dd;display:block;padding:3px 0}
.ft-in a:hover{color:#fff}
.ft-brand .logo{color:#fff;margin-bottom:14px}
.ft-brand p{line-height:1.9}
.ft-bar{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:#7b8dc9}
.ft-bar a{color:#7b8dc9}.ft-bar a:hover{color:#fff}
/* admin */
.admin-box{max-width:860px;margin:50px auto 90px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px}
.admin-box h1{font-size:24px;margin-bottom:20px}
.admin-top{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:22px;flex-wrap:wrap}
.admin-top h1{margin-bottom:0}
.err{background:#fdf0f0;border:1px solid #f3cccc;color:#b42318;border-radius:10px;padding:10px 14px;font-size:14px;margin-bottom:16px}
.hint{margin-top:18px;font-size:13px}
.admin-box label{display:block;font-size:13.5px;color:var(--ink);font-weight:600;margin-bottom:14px}
.admin-box input:not([type=file]),.admin-box select,.admin-box textarea{display:block;width:100%;margin-top:6px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#fff}
.admin-box textarea.md{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.7}
.admin-box input:focus,.admin-box select:focus,.admin-box textarea:focus{outline:2px solid var(--tint);border-color:var(--accent2)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.save-row{margin-top:10px;display:flex;gap:10px}
.upload-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin:6px 0 10px}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;color:var(--muted);font-weight:600;font-size:12.5px;padding:10px 8px;border-bottom:1px solid var(--line)}
.tbl td{padding:12px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl small{color:var(--muted);font-weight:400}
.op{color:var(--accent);cursor:pointer;background:none;border:none;font-size:14px;padding:0 6px}
.op.del{color:#b42318}
@media(max-width:960px){.post-list{grid-template-columns:1fr 1fr}nav.main{display:none}.ft-in{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.post-list,.grid2,.ft-in{grid-template-columns:1fr}.page-title{font-size:26px}.art h1{font-size:24px}}