:root{
  --pri:#ff7a45; --pri2:#ffb457; --acc:#5b6cff; --ok:#22c55e; --warn:#f59e0b;
  --ink:#1f2430; --sub:#6b7280; --line:rgba(17,24,39,.10);
  --card:rgba(255,255,255,.74); --card2:rgba(255,255,255,.92);
  --r:18px; --sh:0 10px 30px rgba(23,32,64,.10); --sh2:0 18px 50px rgba(23,32,64,.16);
  --bgimg:none;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink); background:#f6f7fb; min-height:100vh; line-height:1.7;
  -webkit-font-smoothing:antialiased; font-size:15px;
}
.bg-layer{position:fixed;inset:0;z-index:-2;background:
  radial-gradient(1200px 600px at 12% -10%, #ffe6d5 0%, rgba(255,230,213,0) 60%),
  radial-gradient(900px 500px at 100% 0%, #dfe6ff 0%, rgba(223,230,255,0) 55%),
  linear-gradient(160deg,#fdf7f2 0%,#f4f6fc 45%,#eef2fb 100%);}
.bg-layer::after{content:"";position:absolute;inset:0;background-image:var(--bgimg);background-size:cover;background-position:center;opacity:.55}
.bg-mask{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,.55) 0%,rgba(255,255,255,.78) 40%,rgba(246,247,251,.85) 100%);}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{width:min(1160px,94vw);margin:0 auto}
.muted{color:var(--sub)}
code{background:rgba(17,24,39,.06);padding:1px 6px;border-radius:6px;font-size:13px}

/* 顶栏 */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.72);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}
.bar-inner{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.logo{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--pri),var(--acc));display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(91,108,255,.28)}
.wave{display:flex;align-items:flex-end;gap:3px;height:18px}
.wave i{width:3px;background:#fff;border-radius:2px;display:block;animation:wv 1s ease-in-out infinite}
.wave i:nth-child(1){height:8px}.wave i:nth-child(2){height:16px;animation-delay:.15s}
.wave i:nth-child(3){height:11px;animation-delay:.3s}.wave i:nth-child(4){height:18px;animation-delay:.45s}
@keyframes wv{0%,100%{transform:scaleY(.55)}50%{transform:scaleY(1)}}
.brand-txt{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-txt b{font-size:16px;letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-txt em{font-style:normal;font-size:12px;color:var(--sub);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-item{padding:8px 14px;border-radius:999px;color:#414a5a;font-size:14px;transition:.22s;white-space:nowrap}
.nav-item:hover{background:rgba(255,122,69,.12);color:var(--pri)}
.nav-item.cur{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 6px 16px rgba(255,122,69,.32)}
.bar-user{display:flex;align-items:center;gap:8px}
.hi{font-size:13px;color:var(--sub)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:38px;height:34px;font-size:16px;cursor:pointer;color:var(--ink)}

/* 公告 */
.notice{background:linear-gradient(90deg,rgba(255,122,69,.14),rgba(91,108,255,.12));border-bottom:1px solid var(--line)}
.notice .wrap{font-size:13px;color:#5a4a3f;padding:8px 0;display:flex;gap:8px;align-items:center}
.notice .dot{width:7px;height:7px;border-radius:50%;background:var(--pri);box-shadow:0 0 0 4px rgba(255,122,69,.18);animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.35}}

/* 主体 */
.main{padding:26px 0 40px;min-height:52vh}
.alert{padding:11px 16px;border-radius:12px;margin:0 0 16px;font-size:14px;animation:fade .3s ease}
.alert.ok{background:rgba(34,197,94,.12);color:#167a3c;border:1px solid rgba(34,197,94,.28)}
.alert.err{background:rgba(239,68,68,.10);color:#b4232b;border:1px solid rgba(239,68,68,.25)}
@keyframes fade{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* 按钮 */
.btn{display:inline-block;padding:10px 20px;border-radius:12px;border:0;cursor:pointer;font-size:14px;
  background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 8px 20px rgba(255,122,69,.28);transition:.2s;font-weight:500}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,69,.36)}
.btn-ghost{background:rgba(255,255,255,.85);color:#3c4453;border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{background:#fff;border-color:rgba(255,122,69,.45);color:var(--pri)}
.btn-mini{padding:7px 14px;font-size:13px;border-radius:10px}
.btn-full{width:100%;padding:12px;font-size:15px;margin-top:6px}
.row-btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}

/* 首屏 */
.hero{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch;margin-bottom:28px;animation:fade .4s ease}
.hero-txt{padding:34px 10px 30px 0}
.hero-txt .tag{display:inline-block;font-size:12px;letter-spacing:2px;color:var(--pri);background:rgba(255,122,69,.12);padding:5px 12px;border-radius:999px;margin-bottom:14px}
.hero-txt h1{margin:0 0 10px;font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:-.5px;
  background:linear-gradient(120deg,#1f2430 10%,#ff7a45 55%,#5b6cff 95%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-txt p{margin:0 0 20px;color:var(--sub);font-size:16px;max-width:46em}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.hero-card{background:var(--card);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh);align-self:center}
.hero-card h3{margin:0 0 12px;font-size:14px;color:var(--sub);font-weight:600;letter-spacing:1px}
.hl-title{display:block;font-size:19px;font-weight:600;line-height:1.45;margin-bottom:8px;transition:.2s}
.hl-title:hover{color:var(--pri)}
.hl-sum{color:var(--sub);font-size:14px;margin:0 0 14px}
.hl-meta{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--sub)}
.chip{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;background:rgba(91,108,255,.12);color:#4350c8;white-space:nowrap}
.chip-warn{background:rgba(245,158,11,.16);color:#a26a06}

/* 区块与卡片 */
.sec{margin-bottom:30px}
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:16px}
.sec-head h2{margin:0;font-size:20px;position:relative;padding-left:14px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.5em;width:5px;height:18px;border-radius:3px;background:linear-gradient(180deg,var(--pri),var(--acc))}
.sec-head .more{margin-left:auto;font-size:13px;color:var(--pri)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.card{background:var(--card2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh2)}
.thumb{height:150px;background:linear-gradient(135deg,#ffd9c2,#c9d4ff 60%,#dfe6ff);background-size:cover;background-position:center;position:relative;display:flex;align-items:flex-end;padding:12px}
.thumb .chip{background:rgba(255,255,255,.9)}
.thumb .pin{position:absolute;top:10px;right:10px;background:rgba(255,122,69,.92);color:#fff;padding:2px 9px;border-radius:999px;font-size:11px}
.card-body{padding:14px 16px 16px}
.card-body h3{margin:0 0 8px;font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin:0 0 12px;color:var(--sub);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;gap:14px;font-size:12.5px;color:var(--sub);flex-wrap:wrap}

/* 留言 */
.msgs{display:flex;flex-direction:column;gap:12px}
.msg{display:flex;gap:12px;background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:0 4px 14px rgba(23,32,64,.05)}
.msg.pending{opacity:.72;background:rgba(245,158,11,.07)}
.ava{width:38px;height:38px;border-radius:12px;flex:0 0 38px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;
  background:linear-gradient(135deg,var(--acc),#8b7bff)}
.msg-top{display:flex;align-items:center;gap:10px;margin-bottom:4px;font-size:13px}
.msg-top span{color:var(--sub)}
.msg p{margin:0;font-size:14.5px;white-space:pre-wrap;word-break:break-word}
.del{color:#d9534f;font-size:12.5px}

/* 文章 */
.article{background:var(--card2);border:1px solid var(--line);border-radius:var(--r);padding:30px;box-shadow:var(--sh);margin-bottom:26px}
.art-head h1{margin:10px 0 12px;font-size:clamp(22px,3.2vw,32px);line-height:1.35}
.art-cover{height:280px;border-radius:14px;background-size:cover;background-position:center;margin-bottom:22px;background-color:#eef1f8}
.art-body{font-size:15.6px;line-height:1.95;color:#2b3240;word-break:break-word}
.art-body img{max-width:100%;border-radius:12px;margin:10px 0}
.art-body a{color:var(--acc);text-decoration:underline}
.about-body{background:var(--card2);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh)}
.stat-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px}
.stat{flex:1;min-width:120px;background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center;box-shadow:var(--sh)}
.stat b{display:block;font-size:24px;background:linear-gradient(120deg,var(--pri),var(--acc));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--sub)}

/* 表单 */
.ipt{width:100%;padding:10px 13px;border:1px solid var(--line);border-radius:11px;background:rgba(255,255,255,.9);font-size:14px;color:var(--ink);font-family:inherit;transition:.2s}
.ipt:focus{outline:0;border-color:rgba(255,122,69,.6);box-shadow:0 0 0 4px rgba(255,122,69,.12)}
.fld{display:block;margin-bottom:12px}
.fld>span{display:block;font-size:13px;color:var(--sub);margin-bottom:6px}
.flds{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.chk{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:var(--sub);margin:6px 14px 6px 0}
.filter{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.filter .ipt{width:auto;flex:1;min-width:160px}
.cform{margin:14px 0 18px}
.cform textarea{margin-bottom:10px}
.hr{border:0;border-top:1px solid var(--line);margin:16px 0}

/* 登录注册 */
.auth{display:flex;justify-content:center;padding:20px 0 30px}
.auth-card{width:min(420px,100%);background:var(--card2);border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--sh2);animation:fade .35s ease}
.auth-card h2{margin:0 0 6px;font-size:22px}
.auth-card p{margin:0 0 20px;font-size:13.5px}
.auth-tip{margin:16px 0 0;text-align:center;font-size:13.5px;color:var(--sub)}
.auth-tip a{color:var(--pri)}

/* 后台 */
.admin{display:grid;grid-template-columns:210px 1fr;gap:20px;align-items:start}
.side{position:sticky;top:82px;background:var(--card2);border:1px solid var(--line);border-radius:var(--r);padding:14px;box-shadow:var(--sh)}
.side-user{padding:6px 8px 14px;border-bottom:1px solid var(--line);margin-bottom:10px}
.side-user b{display:block;font-size:15px}
.side-user span{font-size:12px;color:var(--sub)}
.side-item{display:block;padding:9px 12px;border-radius:11px;font-size:14px;color:#414a5a;margin-bottom:3px;transition:.18s}
.side-item:hover{background:rgba(91,108,255,.08)}
.side-item.on{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff}
.side-out{margin-top:10px;border-top:1px solid var(--line);border-radius:0;padding-top:14px;color:var(--sub)}
.admin-body{min-width:0}
.adm-h{margin:0 0 16px;font-size:20px}
.panel{background:var(--card2);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--sh);margin-bottom:18px}
.panel h3{margin:0 0 12px;font-size:15px}
.panel .btn{margin-top:8px}
.line{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);flex-wrap:wrap}
.line:last-child{border-bottom:0}
.line>a:first-child,.line>span:first-child{flex:1;min-width:0}
.ops{display:flex;gap:12px;font-size:13px}
.ops a{color:var(--acc)}
.cm-line p{margin:4px 0 0;font-size:13.5px;color:#3a4250}

/* 分页 */
.pager{display:flex;gap:8px;margin-top:20px;flex-wrap:wrap}
.pg{padding:6px 13px;border-radius:10px;background:rgba(255,255,255,.9);border:1px solid var(--line);font-size:13.5px}
.pg.on{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;border-color:transparent}

/* 页脚与播放器 */
.site-foot{margin-top:30px;padding:26px 0;background:rgba(255,255,255,.55);border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--sub)}
.site-foot p{margin:4px 0}
.player{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:999px;padding:8px 14px;box-shadow:var(--sh2)}
.player .pp{width:34px;height:34px;border-radius:50%;border:0;cursor:pointer;color:#fff;font-size:12px;
  background:linear-gradient(135deg,var(--pri),var(--acc));box-shadow:0 6px 14px rgba(91,108,255,.28)}
.player.on .pp{animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.pinfo{max-width:130px;overflow:hidden}
.ptitle{font-size:13px;white-space:nowrap}
.vol{width:80px}

@media(max-width:900px){
  .hero{grid-template-columns:1fr}
  .hero-txt{padding:22px 0 6px}
  .nav{display:none;position:absolute;top:66px;left:0;right:0;background:rgba(255,255,255,.97);padding:10px 4vw;
    flex-direction:column;border-bottom:1px solid var(--line);box-shadow:var(--sh)}
  body.nav-open .nav{display:flex}
  .nav-toggle{display:block}
  .bar-user{margin-left:auto}
  .admin{grid-template-columns:1fr}
  .side{position:static;display:flex;gap:6px;overflow-x:auto}
  .side-user{display:none}
  .side-item{white-space:nowrap}
  .flds{grid-template-columns:1fr}
  .article{padding:20px}
}