/* =========================================================
   宁中风云榜 · 站点样式（明亮版）
   ========================================================= */
:root{
  --bg:#f6f7fb;
  --bg-2:#eef1f8;
  --card:#ffffff;
  --ink:#16203a;
  --ink-2:#2b3852;
  --muted:#5e6b86;
  --dim:#8b96ad;
  --line:#e5e9f3;
  --line-2:#eef1f7;
  --accent:#3558c9;
  --accent-2:#5b7ce0;
  --accent-soft:#e9efff;
  --amber:#d99533;
  --green:#3f8f7a;
  --rose:#a8557f;
  --radius:20px;
  --shadow:0 14px 40px rgba(22,32,58,.07);
  --shadow-lg:0 26px 70px rgba(22,32,58,.12);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --pad:clamp(20px,5vw,64px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 620px at 10% -8%, rgba(53,88,201,.10), transparent 62%),
    radial-gradient(760px 520px at 92% 4%, rgba(217,149,51,.10), transparent 60%),
    radial-gradient(900px 700px at 60% 108%, rgba(63,143,122,.07), transparent 62%),
    linear-gradient(180deg,#f8f9fc 0%,#f5f7fb 46%,#f2f5fa 100%)}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:rgba(53,88,201,.16);color:#0f1730}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;
  justify-content:space-between;padding:20px var(--pad);transition:.35s;
  border-bottom:1px solid transparent}
.nav.solid{background:rgba(255,255,255,.86);backdrop-filter:blur(16px) saturate(150%);
  border-bottom-color:var(--line);padding:14px var(--pad);box-shadow:0 6px 24px rgba(22,32,58,.04)}
.nav .brand{display:flex;align-items:baseline;gap:10px}
.nav .name{font-family:var(--serif);font-size:17px;letter-spacing:.2em;color:var(--ink)}
.nav .en{font-size:9px;letter-spacing:.24em;color:var(--dim)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:12.5px;letter-spacing:.06em;color:var(--muted);position:relative;transition:.2s}
.nav-links a:hover{color:var(--accent)}
.nav-links a.active{color:var(--ink);font-weight:500}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;
  border-radius:2px;background:var(--accent)}

/* 投稿入口（导航右侧） */
.nav-sub{display:inline-flex;align-items:center;gap:7px;flex:none;padding:8px 15px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);font-family:var(--font);
  font-size:12px;letter-spacing:.06em;cursor:pointer;box-shadow:0 4px 14px rgba(22,32,58,.05);
  transition:border-color .22s,color .22s,transform .22s,box-shadow .22s}
.nav-sub:hover{border-color:#c9d3ea;color:var(--accent);transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(53,88,201,.15)}
.nav-sub svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round}

/* ---------- 通用 ---------- */
.wrap{max-width:1160px;margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(56px,8vw,104px) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.sec-head h2{margin:0;font-family:var(--serif);font-size:clamp(22px,3vw,32px);
  font-weight:600;letter-spacing:.1em;color:var(--ink)}
.sec-head .en{display:block;margin-top:9px;font-size:9.5px;letter-spacing:.3em;color:var(--dim)}
.sec-head .more{font-size:12px;color:var(--accent);white-space:nowrap}
.sec-head .more:hover{text-decoration:underline}
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:999px;
  font-size:12.5px;letter-spacing:.04em;transition:.25s;border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 26px rgba(53,88,201,.24)}
.btn-primary:hover{background:#2c4bb2;transform:translateY(-2px);box-shadow:0 18px 34px rgba(53,88,201,.3)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2);box-shadow:var(--shadow)}
.btn-ghost:hover{border-color:#c9d3ea;transform:translateY(-2px)}
.btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.7}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:clamp(140px,17vh,200px) 0 clamp(60px,8vw,90px);overflow:hidden}
.hero .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;pointer-events:none}
.hero .b1{width:460px;height:460px;left:-120px;top:-80px;background:rgba(91,124,224,.28)}
.hero .b2{width:380px;height:380px;right:-90px;top:40px;background:rgba(217,149,51,.22)}
.hero .b3{width:340px;height:340px;right:26%;bottom:-160px;background:rgba(63,143,122,.16)}
.hero .wrap{position:relative;z-index:2}
.hero-inner{position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center}
.hero .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.2em;
  color:var(--accent);background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 16px;box-shadow:var(--shadow)}
.hero .eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(53,88,201,.14)}
.hero h1{margin:26px 0 0;font-family:var(--serif);font-weight:600;
  font-size:clamp(42px,7.6vw,76px);line-height:1.12;letter-spacing:.06em;color:var(--ink)}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lead{margin:24px auto 0;max-width:600px;font-size:13.5px;line-height:1.95;
  color:var(--muted);white-space:pre-line}
.hero .cta{margin-top:36px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero .hint{margin-top:26px;font-size:11.5px;color:var(--dim);letter-spacing:.04em}

/* ---------- 分类卡片 ---------- */
.sections{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sec-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px 24px;transition:.35s;box-shadow:var(--shadow);overflow:hidden;display:flex;
  flex-direction:column;min-height:238px}
.sec-card::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:var(--accent-c,#3558c9);opacity:.9}
.sec-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#d7def0}
.sec-card .meta{font-size:10px;letter-spacing:.16em;color:var(--dim)}
.sec-card h3{margin:16px 0 0;font-family:var(--serif);font-size:22px;font-weight:600;
  letter-spacing:.08em;color:var(--ink)}
.sec-card .en{margin-top:6px;font-size:9px;letter-spacing:.28em;color:var(--accent-c,#3558c9);opacity:.8}
.sec-card p{margin:14px 0 0;font-size:12.5px;line-height:1.85;color:var(--muted);flex:1}
.sec-card .go{margin-top:18px;display:flex;align-items:center;gap:8px;font-size:12px;
  color:var(--accent-c,#3558c9);font-weight:500}
.sec-card .go svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .3s}
.sec-card:hover .go svg{transform:translateX(5px)}
.sec-card.soon{background:linear-gradient(180deg,#fbfcfe,#f4f6fb);border-style:dashed;
  box-shadow:none;opacity:.82}
.sec-card.soon::before{opacity:.35}
.sec-card.soon .go{color:var(--dim)}
.sec-card.soon:hover{transform:none;box-shadow:none}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--line);padding:44px 0 34px;margin-top:20px;background:rgba(255,255,255,.5)}
.foot .frow{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.foot .fname{font-family:var(--serif);font-size:16px;letter-spacing:.2em;color:var(--ink)}
.foot .fnote{margin-top:12px;font-size:11.5px;color:var(--dim);line-height:1.9}
.foot .flinks{display:flex;gap:22px;flex-wrap:wrap}
.foot .flinks a{font-size:12px;color:var(--muted);transition:.2s}
.foot .flinks a:hover{color:var(--accent)}
/* 页脚联系方式 */
.foot .fcontact{margin-top:26px;display:flex;align-items:center;gap:13px;flex-wrap:wrap}
.foot .fcontact .clabel{font-size:9.5px;letter-spacing:.26em;color:var(--dim)}
.foot .qq{display:inline-flex;align-items:center;gap:9px;padding:8px 17px 8px 13px;
  border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
  font-size:13px;letter-spacing:.06em;color:#1f2937;
  transition:border-color .25s,color .25s,transform .25s,box-shadow .25s}
.foot .qq:hover{border-color:#12b7f5;color:#0e9fd8;transform:translateY(-2px);
  box-shadow:0 12px 28px rgba(18,183,245,.20)}
.foot .qq .qq-ico{width:17px;height:17px;flex:none;display:block}
.foot .qq .num{font-variant-numeric:tabular-nums}
.foot .fsub{padding:8px 16px;border-radius:999px;background:var(--accent-soft);
  border:1px solid #dbe3fb;color:var(--accent);font-family:var(--font);font-size:11.5px;
  letter-spacing:.06em;cursor:pointer;transition:.22s}
.foot .fsub:hover{background:#e2e9ff;transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(53,88,201,.14)}
/* 页脚：隐私与退出通道 */
.foot .fnotice{flex-basis:100%;margin:4px 0 0;display:flex;align-items:flex-start;gap:7px;
  font-size:11px;line-height:1.85;color:var(--dim);letter-spacing:.02em}
.foot .fnotice svg{width:12px;height:12px;flex:none;margin-top:3px;stroke:#b3bccd;
  fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.foot .fnotice a{color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:1px;transition:.2s}
.foot .fnotice a:hover{color:var(--accent);border-bottom-color:#b9c9f2}
/* 页脚：查询投稿 */
.foot .fmy{padding:8px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--muted);font-size:11.5px;letter-spacing:.06em;box-shadow:var(--shadow);transition:.22s}
.foot .fmy:hover{border-color:#c9d3ea;color:var(--accent);transform:translateY(-1px)}

/* 导航：搜索按钮 */
.nav-find{display:inline-flex;align-items:center;gap:7px;flex:none;margin-left:auto;
  padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--ink-2);font-family:var(--font);font-size:12px;letter-spacing:.06em;cursor:pointer;
  box-shadow:0 4px 14px rgba(22,32,58,.05);transition:.22s}
.nav-find:hover{border-color:#c9d3ea;color:var(--accent);transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(53,88,201,.15)}
.nav-find svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round}
.nav-find kbd{font-family:var(--mono);font-size:9px;letter-spacing:0;color:#b3bdcd;
  border:1px solid var(--line);border-radius:4px;padding:1px 4px;margin-left:2px}
.nav-acts{display:flex;align-items:center;gap:9px}
.nav-links + .nav-acts{margin-left:0}
.nav-acts .nav-find{margin-left:0}

.foot .copy{margin-top:30px;padding-top:20px;border-top:1px solid var(--line-2);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:10px;
  letter-spacing:.14em;color:#a3adc2}

/* ---------- 班级页 ---------- */
.class-hero{padding:clamp(130px,15vh,170px) 0 10px}
.class-hero .grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:center}
.class-hero .en{font-size:10px;letter-spacing:.28em;color:var(--accent)}
.class-hero h1{margin:16px 0 0;font-family:var(--serif);font-size:clamp(36px,5.6vw,56px);
  font-weight:600;letter-spacing:.08em;color:var(--ink)}
.class-hero .motto{margin:20px 0 0;font-family:var(--serif);font-size:16px;line-height:1.9;
  letter-spacing:.04em;color:var(--ink-2);max-width:520px}
.class-hero .intro{margin:18px 0 0;font-size:13.5px;line-height:2;color:var(--muted);
  white-space:pre-line;max-width:540px}
.class-card{background:var(--card);border:1px solid var(--line);border-radius:24px;
  padding:28px 26px;box-shadow:var(--shadow-lg)}
.class-card .row{display:flex;justify-content:space-between;align-items:baseline;
  padding:13px 0;border-bottom:1px solid var(--line-2)}
.class-card .row:last-child{border-bottom:0;padding-bottom:0}
.class-card .row span{font-size:11.5px;color:var(--dim);letter-spacing:.08em}
.class-card .row b{font-family:var(--mono);font-size:20px;font-weight:500;color:var(--ink)}
.class-card .who{display:flex;align-items:center;gap:12px;padding-bottom:18px;
  border-bottom:1px solid var(--line-2);margin-bottom:6px}
.class-card .who .av{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);
  color:var(--accent);display:grid;place-items:center;font-family:var(--serif);font-size:17px}
.class-card .who b{display:block;font-size:13.5px;color:var(--ink)}
.class-card .who span{display:block;margin-top:3px;font-size:11px;color:var(--dim)}

/* ---------- 入口卡片 ---------- */
.entries{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.entry{position:relative;background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:26px 24px;transition:.32s;box-shadow:var(--shadow);overflow:hidden}
.entry:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#d6deef}
.entry .ico{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent-c,#3558c9);margin-bottom:16px}
.entry .ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6}
.entry h3{margin:0;font-family:var(--serif);font-size:19px;font-weight:600;letter-spacing:.06em;color:var(--ink)}
.entry .en{margin-top:6px;font-size:9px;letter-spacing:.26em;color:var(--accent-c,#3558c9);opacity:.8}
.entry p{margin:12px 0 0;font-size:12.5px;line-height:1.85;color:var(--muted)}
.entry .arrow{position:absolute;right:22px;top:26px;color:#c3cde3;transition:.3s}
.entry:hover .arrow{color:var(--accent-c,#3558c9);transform:translate(3px,-3px)}
.entry .arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}

/* ---------- 列表 ---------- */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden}
.row-item{display:grid;grid-template-columns:52px 1fr auto;gap:20px;align-items:center;
  padding:20px 26px;border-bottom:1px solid var(--line-2);transition:.25s}
.row-item:last-child{border-bottom:0}
.row-item:hover{background:#fafbfe}
.row-item .rk{font-family:var(--mono);font-size:11px;color:#b3bdd0}
.row-item .nm{font-family:var(--serif);font-size:18px;letter-spacing:.04em;color:var(--ink)}
.row-item .tt{margin-top:6px;font-size:12.5px;color:var(--muted)}
.row-item .tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px}
.row-item .dt{font-family:var(--mono);font-size:11px;color:var(--dim);white-space:nowrap}
.tag{font-size:10.5px;padding:3px 9px;border-radius:999px;color:var(--muted);
  background:var(--bg-2);border:1px solid var(--line)}
.badge{display:inline-block;margin-left:10px;font-size:10px;letter-spacing:.06em;padding:3px 9px;
  border-radius:999px;color:var(--amber);background:#fdf4e6;border:1px solid #f2e2c6;vertical-align:middle}

/* ---------- 作业板 ---------- */
.hw-board{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden}
.hw-row{display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:22px;align-items:center;
  padding:19px 26px;border-bottom:1px solid var(--line-2);transition:background .25s}
.hw-row:last-child{border-bottom:0}
.hw-row:hover{background:#fafbfe}
.hw-sub{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.12em;
  color:var(--hw-c,var(--accent));white-space:nowrap}
.hw-sub::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;
  box-shadow:0 0 0 3px color-mix(in srgb,currentColor 14%,transparent)}
.hw-main b{display:block;font-family:var(--serif);font-size:16.5px;font-weight:600;
  letter-spacing:.03em;line-height:1.5;color:var(--ink);text-wrap:pretty}
.hw-main span{display:block;margin-top:6px;font-size:12.5px;line-height:1.8;color:var(--muted);
  text-wrap:pretty}
.hw-due{font-size:11px;letter-spacing:.05em;color:var(--dim);white-space:nowrap;
  padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-variant-numeric:tabular-nums}
.hw-due.soon{color:#a8762a;background:#fdf6e9;border-color:#f0e0c2}
.hw-due.over{color:#9aa4b8;background:var(--bg-2);border-color:var(--line)}
.hw-row.over{opacity:.66}
.hw-row.over:hover{background:#fff;opacity:.82}
.hw-row.over .hw-main b{font-weight:500;color:var(--muted)}
.hw-split{display:flex;align-items:center;gap:14px;padding:15px 26px 13px;background:var(--bg-2);
  border-top:1px solid var(--line-2);font-size:9.5px;letter-spacing:.26em;color:var(--dim)}
.hw-split i{flex:1;height:1px;background:var(--line)}
.hw-empty{padding:42px 26px;text-align:center;font-size:13px;color:var(--muted)}
.hw-empty b{display:block;margin-bottom:8px;font-family:var(--serif);font-size:16px;
  font-weight:600;letter-spacing:.06em;color:var(--ink-2)}
.hw-count{font-size:11.5px;color:var(--dim);letter-spacing:.04em;white-space:nowrap}
.hw-count b{font-family:var(--mono);font-size:13px;font-weight:500;color:var(--accent)}

/* ---------- 引用 ---------- */
.quote{background:linear-gradient(135deg,#eef2ff,#f7f2ea);border:1px solid var(--line);
  border-radius:24px;padding:clamp(36px,6vw,64px);text-align:center;box-shadow:var(--shadow)}
.quote p{margin:0;font-family:var(--serif);font-size:clamp(19px,2.8vw,27px);line-height:1.9;
  letter-spacing:.05em;color:var(--ink-2)}
.quote .by{margin-top:20px;font-size:11px;letter-spacing:.2em;color:var(--dim)}

/* ---------- 子页头 ---------- */
.page-head{padding:clamp(130px,15vh,170px) 0 10px}
.page-head .en{font-size:10px;letter-spacing:.26em;color:var(--accent)}
.page-head h1{margin:16px 0 0;font-family:var(--serif);font-weight:600;
  font-size:clamp(32px,5vw,50px);letter-spacing:.08em;color:var(--ink)}
.page-head .lead{margin:18px 0 0;max-width:600px;font-size:13.5px;line-height:1.95;color:var(--muted)}
.crumb{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--dim);margin-bottom:18px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent)}

/* ---------- 筛选 ---------- */
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:36px 0 16px}
.chip{padding:8px 16px;border-radius:999px;font-size:12px;font-family:var(--font);
  color:var(--muted);background:#fff;border:1px solid var(--line);cursor:pointer;transition:.2s}
.chip:hover{border-color:#c9d3ea;color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
.count{margin-left:auto;font-size:11.5px;color:var(--dim)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,transparent,#dbe2f0 8%,#dbe2f0 92%,transparent)}
.year-mark{display:flex;align-items:center;gap:16px;margin:36px 0 24px}
.year-mark b{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--accent)}
.year-mark i{flex:1;height:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item::before{content:"";position:absolute;left:-29px;top:6px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid #c9d3ea;transition:.25s}
.tl-item:hover::before{border-color:var(--accent);box-shadow:0 0 0 4px rgba(53,88,201,.12)}
.tl-item .date{font-family:var(--mono);font-size:11.5px;color:var(--dim);letter-spacing:.06em}
.tl-item h3{margin:8px 0 0;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--ink)}
.tl-item p{margin:10px 0 0;font-size:13px;line-height:1.9;color:var(--muted);max-width:62ch}
.tl-item .tag{display:inline-block;margin-top:12px}

/* ---------- 相册 ---------- */
.masonry{columns:3;column-gap:16px}
.masonry .shot{break-inside:avoid;margin:0 0 16px;border-radius:16px;overflow:hidden;
  position:relative;border:1px solid var(--line);cursor:zoom-in;background:#eef1f7;
  box-shadow:var(--shadow)}
.masonry .shot img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.masonry .shot:hover img{transform:scale(1.04)}
.masonry .cap{position:absolute;left:0;right:0;bottom:0;padding:30px 16px 14px;
  background:linear-gradient(180deg,transparent,rgba(10,16,30,.78));opacity:0;transition:.3s}
.masonry .shot:hover .cap{opacity:1}
.masonry .cap b{display:block;font-size:12.5px;color:#fff}
.masonry .cap span{display:block;margin-top:3px;font-size:10.5px;color:rgba(255,255,255,.75)}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;z-index:80;display:none;place-items:center;padding:40px;
  background:rgba(16,24,42,.86);backdrop-filter:blur(10px);cursor:zoom-out}
.lightbox.on{display:grid}
.lightbox img{max-width:min(92vw,1080px);max-height:86vh;border-radius:14px;
  box-shadow:0 40px 100px rgba(0,0,0,.4)}

/* ---------- 投稿召唤卡 ---------- */
.sub-cta{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:30px 32px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(135deg,#fff 0%,#f7faff 58%,#fdf8f0 100%);box-shadow:var(--shadow);
  position:relative;overflow:hidden}
.sub-cta::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:linear-gradient(90deg,var(--accent),#5b7ce0 46%,var(--amber));opacity:.85}
.sub-cta .en{font-size:9.5px;letter-spacing:.3em;color:var(--dim)}
.sub-cta h2{margin:10px 0 0;font-family:var(--serif);font-size:clamp(19px,2.4vw,24px);
  font-weight:600;letter-spacing:.08em;color:var(--ink)}
.sub-cta p{margin:12px 0 0;max-width:560px;font-size:12.5px;line-height:1.9;color:var(--muted)}
.sub-cta .btn{white-space:nowrap}

/* ---------- 查询我的投稿 ---------- */
.my-col{max-width:860px}
.my-search{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 26px 22px;box-shadow:var(--shadow)}
.my-search > label{display:block;font-size:11px;letter-spacing:.12em;color:var(--dim)}
.my-row{display:flex;gap:10px;margin-top:10px}
.my-row input{flex:1;min-width:0;padding:13px 16px;border-radius:13px;border:1px solid var(--line);
  background:#f8f9fc;font-family:var(--mono);font-size:19px;letter-spacing:.32em;color:var(--ink);
  outline:none;transition:.2s}
.my-row input::placeholder{font-size:13px;letter-spacing:.06em;color:#b3bccd}
.my-row input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(53,88,201,.10)}
.my-row .btn{white-space:nowrap;border:1px solid transparent;cursor:pointer;font-family:var(--font)}
.my-hint{margin:12px 0 0;font-size:11.5px;line-height:1.85;color:var(--dim)}
.my-err{margin-top:16px;padding:11px 15px;border-radius:12px;background:#fff5f2;
  border:1px solid #f0d6cd;font-size:11.5px;color:#b4482f}
.my-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.my-item{display:flex;align-items:center;gap:16px;padding:15px 18px;background:#fff;
  border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}
.my-item .code{font-family:var(--mono);font-size:18px;letter-spacing:.2em;color:var(--ink);flex:none}
.my-item .bd{flex:1;min-width:0}
.my-item .bd b{display:block;font-family:var(--serif);font-size:14.5px;font-weight:600;color:var(--ink);
  letter-spacing:.03em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.my-item .bd span{display:block;margin-top:5px;font-size:11px;color:var(--dim);line-height:1.7}
.my-st{flex:none;padding:5px 12px;border-radius:999px;font-size:11px;letter-spacing:.04em;
  border:1px solid;white-space:nowrap}
.my-st.pending{color:#a8762a;border-color:#f1e3c7;background:#fdf7ea}
.my-st.approved{color:#2f7a63;border-color:#d9ece4;background:#f0f9f5}
.my-st.rejected{color:#8b96ad;border-color:#e8ecf4;background:#f7f8fb}
.my-st.none{color:#b4482f;border-color:#f0d6cd;background:#fff5f2}
.my-item .go{flex:none;font-size:11.5px;color:var(--accent);border-bottom:1px solid #cfdaf6;
  padding-bottom:1px}
.my-empty{margin-top:18px;padding:34px 22px;text-align:center;border:1px dashed var(--line);
  border-radius:16px;background:rgba(255,255,255,.55)}
.my-empty b{display:block;font-family:var(--serif);font-size:15px;letter-spacing:.1em;color:var(--ink)}
.my-empty span{display:block;margin-top:10px;font-size:11.5px;line-height:1.95;color:var(--dim)}
.my-note{margin-top:26px;padding:22px 24px;border-radius:var(--radius);
  border:1px solid var(--line-2);background:rgba(255,255,255,.62)}
.my-note b{display:block;font-family:var(--serif);font-size:14px;letter-spacing:.1em;color:var(--ink)}
.my-note p{margin:11px 0 0;font-size:12px;line-height:1.95;color:var(--muted)}
.my-note a{color:var(--accent);border-bottom:1px solid #cfdaf6}

/* ---------- 留言板 ---------- */
.chat-wrap > .chat-card,.chat-wrap > .chat-mini{max-width:720px}
.chat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden}
.chat-head{display:flex;align-items:center;gap:10px;padding:16px 22px;
  border-bottom:1px solid var(--line-2);background:linear-gradient(135deg,#fff,#f8fafd)}
.chat-head .who{font-family:var(--serif);font-size:14px;letter-spacing:.06em;color:var(--ink)}
.chat-head .st{margin-left:auto;padding:3px 10px;border-radius:999px;font-size:10.5px;
  border:1px solid #f1e3c7;background:#fdf7ea;color:#a8762a}
.chat-head .st.on{border-color:#d9ece4;background:#f0f9f5;color:#2f7a63}
.chat-head .st.off{border-color:#e8ecf4;background:#f7f8fb;color:#8b96ad}
.chat-body{padding:20px 22px;display:flex;flex-direction:column;gap:14px;
  max-height:min(54vh,520px);overflow:auto;background:#fbfcfe}
.chat-body::-webkit-scrollbar{width:8px}
.chat-body::-webkit-scrollbar-thumb{background:#e3e8f3;border-radius:8px}
.bub{max-width:78%;display:flex;flex-direction:column;gap:5px}
.bub .txt{padding:11px 15px;border-radius:15px;font-size:13px;line-height:1.85;
  white-space:pre-wrap;word-break:break-word}
.bub .at{font-family:var(--mono);font-size:9.5px;color:#b3bccd;letter-spacing:.04em}
.bub.me{align-self:flex-end;align-items:flex-end}
.bub.me .txt{background:var(--accent);color:#fff;border-bottom-right-radius:5px}
.bub.them{align-self:flex-start}
.bub.them .txt{background:#fff;border:1px solid var(--line);color:var(--ink-2);border-bottom-left-radius:5px}
.bub.ai .txt{background:#f4f1ff;border-color:#e4ddf8;color:#3f3663}
.bub .who2{font-size:10px;letter-spacing:.1em;color:var(--dim)}
.chat-foot{padding:14px 18px 16px;border-top:1px solid var(--line-2);background:#fff;
  display:flex;gap:10px;align-items:flex-end}
.chat-foot textarea{flex:1;min-width:0;min-height:46px;max-height:150px;padding:12px 14px;
  border-radius:13px;border:1px solid var(--line);background:#f8f9fc;color:var(--ink);
  font-family:var(--font);font-size:13px;line-height:1.7;outline:none;resize:none;transition:.18s}
.chat-foot textarea:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(53,88,201,.10)}
.chat-send{flex:none;padding:12px 20px;border:1px solid var(--accent);border-radius:12px;
  background:var(--accent);color:#fff;font-family:var(--font);font-size:13px;letter-spacing:.06em;
  cursor:pointer;transition:.2s;box-shadow:0 10px 22px rgba(53,88,201,.22)}
.chat-send:hover{background:#2c4bb2;transform:translateY(-1px)}
.chat-send:disabled{opacity:.55;cursor:not-allowed;transform:none}
.chat-form{padding:24px 22px 22px}
.chat-form .grid2{display:grid;grid-template-columns:1.3fr .7fr;gap:12px}
.chat-form .row{margin-top:14px}
.chat-form label{display:block;font-size:11px;letter-spacing:.06em;color:var(--dim);margin-bottom:7px}
.chat-form input,.chat-form textarea{width:100%;padding:12px 14px;border-radius:12px;
  border:1px solid var(--line);background:#f8f9fc;color:var(--ink);font-family:var(--font);
  font-size:13px;outline:none;transition:.18s}
.chat-form textarea{min-height:96px;resize:vertical;line-height:1.8}
.chat-form input:focus,.chat-form textarea:focus{border-color:var(--accent);background:#fff;
  box-shadow:0 0 0 4px rgba(53,88,201,.10)}
.chat-form .hint{margin:12px 0 0;font-size:11px;line-height:1.8;color:var(--dim)}
.chat-form .go{margin-top:18px;width:100%;padding:14px;border:0;border-radius:12px;cursor:pointer;
  background:var(--accent);color:#fff;font-family:var(--font);font-size:13px;letter-spacing:.08em;
  box-shadow:0 14px 28px rgba(53,88,201,.24);transition:.22s}
.chat-form .go:hover{background:#2c4bb2;transform:translateY(-1px)}
.chat-form .go:disabled{opacity:.6;cursor:not-allowed;transform:none}
.chat-err{margin-top:12px;font-size:11.5px;color:#c0503c}
.chat-tip{margin:18px 0 0;display:flex;gap:8px;font-size:11.5px;line-height:1.85;color:var(--dim)}
.chat-tip svg{width:13px;height:13px;flex:none;margin-top:3px;stroke:#b3bccd;fill:none;stroke-width:1.6}
.chat-mini{display:flex;align-items:center;gap:12px;margin-top:14px;font-size:11px;color:var(--dim)}
.chat-mini button{border:0;background:none;padding:0;color:var(--accent);cursor:pointer;font-size:11px;
  font-family:var(--font);border-bottom:1px solid #cfdaf6}
@media (max-width:680px){
  .chat-form .grid2{grid-template-columns:1fr}
  .chat-body{max-height:52vh;padding:16px}
  .bub{max-width:86%}
}

/* ---------- 搜索定位高亮 ---------- */
.row-item.hit{background:#fffbf3;box-shadow:inset 0 0 0 1px #f2e3c6;border-radius:13px;
  animation:hitGlow 2.6s ease 1}
.tl-item.hit{background:#fffbf3;border-radius:12px;
  box-shadow:inset 0 0 0 1px #f2e3c6;animation:hitGlow 2.6s ease 1}
.masonry .shot.hit{outline:2px solid var(--amber);outline-offset:3px}
.masonry .shot.hit .cap{opacity:1}
@keyframes hitGlow{
  0%{box-shadow:inset 0 0 0 1px #f2e3c6,0 0 0 0 rgba(217,149,51,.34)}
  60%{box-shadow:inset 0 0 0 1px #f2e3c6,0 0 0 12px rgba(217,149,51,0)}
  100%{box-shadow:inset 0 0 0 1px #f2e3c6,0 0 0 0 rgba(217,149,51,0)}
}
.search-note{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 16px;
  padding:11px 16px;border-radius:12px;background:#fffaf1;border:1px solid #f2e3c6;
  font-size:11.5px;color:#8a6a2f;line-height:1.7}
.search-note b{font-weight:500;color:#7a5a20}
.search-note button{margin-left:auto;padding:5px 12px;border-radius:999px;background:#fff;
  border:1px solid #ecdcbc;color:#8a6a2f;font-family:var(--font);font-size:11px;cursor:pointer;transition:.2s}
.search-note button:hover{background:#fff6e4;border-color:#e2cc9f}
.search-note[hidden]{display:none}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(18px);
  transition:opacity .8s cubic-bezier(.16,.84,.3,1),transform .8s cubic-bezier(.16,.84,.3,1)}
.reveal.in{opacity:1;transform:none}
html.flat .reveal{opacity:1!important;transform:none!important}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .sections{grid-template-columns:repeat(2,1fr)}
  .class-hero .grid{grid-template-columns:1fr;gap:30px}
  .masonry{columns:2}
}
@media (max-width:680px){
  .nav{padding:14px 18px}
  .nav.solid{padding:11px 18px}
  .nav-links{display:none}
  .nav .en{display:none}
  .nav-find span,.nav-find kbd{display:none}
  .nav-find{padding:8px 10px}
  .nav-sub{padding:8px 12px}
  .sections{grid-template-columns:1fr}
  .entries{grid-template-columns:1fr}
  .masonry{columns:1}
  .row-item{grid-template-columns:32px 1fr;gap:14px;padding:16px 18px}
  .row-item .dt{display:none}
  .hw-row{grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"sub due" "main main";
    gap:7px 10px;padding:15px 18px}
  .hw-sub{grid-area:sub;font-size:10.5px}
  .hw-main{grid-area:main}
  .hw-due{grid-area:due;align-self:center;font-size:10.5px;padding:4px 10px}
  .hw-main b{font-size:15px}
  .hero{padding-top:120px}
}

/* ---------- 联系管理员：QQ 浮层 ---------- */
.foot .qq{cursor:pointer;font-family:var(--font)}
html.qq-open{overflow:hidden}
.qqlayer{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:24px}
.qqlayer[hidden]{display:none}
.qqlayer .qqmask{position:absolute;inset:0;background:rgba(16,24,42,.44);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:qq-fade .22s ease both}
.qqlayer .qqbox{position:relative;width:min(430px,100%);padding:30px 30px 24px;
  border-radius:22px;background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-lg);animation:qq-pop .3s cubic-bezier(.22,1,.36,1) both}
.qqlayer .qqx{position:absolute;top:12px;right:12px;width:30px;height:30px;display:grid;
  place-items:center;border:0;border-radius:50%;background:transparent;cursor:pointer;
  color:var(--dim);transition:.2s}
.qqlayer .qqx:hover{background:var(--bg-2);color:var(--ink)}
.qqlayer .qqx svg{width:13px;height:13px;stroke:currentColor;stroke-width:1.7;
  fill:none;stroke-linecap:round}
.qqlayer .qqtop{display:flex;align-items:center;gap:9px;font-size:15px;color:var(--ink)}
.qqlayer .qqtop .qq-ico{width:19px;height:19px;color:#12b7f5;flex:none}
.qqlayer .qqtop b{font-weight:600;letter-spacing:.02em}
.qqlayer .qqsub{margin:7px 0 0;font-size:11.5px;line-height:1.8;color:var(--dim);letter-spacing:.02em}
.qqlayer .qqnumwrap{margin-top:20px;display:flex;align-items:center;gap:10px;
  padding:14px 16px;border-radius:14px;background:linear-gradient(135deg,#f4f7ff,#fbf8f2);
  border:1px solid var(--line)}
.qqlayer .qqnum{flex:1;min-width:0;font-family:var(--mono);font-size:23px;letter-spacing:.06em;
  color:var(--ink);user-select:all;-webkit-user-select:all}
.qqlayer .qqcopy{flex:none;padding:7px 15px;border-radius:999px;border:1px solid #dbe3fb;
  background:#fff;color:var(--accent);font-family:var(--font);font-size:11.5px;
  letter-spacing:.06em;cursor:pointer;transition:.2s}
.qqlayer .qqcopy:hover{background:var(--accent-soft)}
.qqlayer .qqcopy.ok{background:#eef9f4;border-color:#cfe9dd;color:#2f7a63}
.qqlayer .qqgo{display:block;width:100%;margin-top:14px;padding:13px;border-radius:12px;text-align:center;
  background:var(--accent);color:#fff;font-size:13px;letter-spacing:.08em;
  box-shadow:0 12px 26px rgba(53,88,201,.22);transition:.22s}
.qqlayer .qqgo:hover{background:#2f4fb8;transform:translateY(-1px)}
.qqlayer .qqgo[hidden]{display:none}
.qqlayer .qqhint{margin:12px 0 0;font-size:11px;line-height:1.8;color:var(--dim);transition:.2s}
.qqlayer .qqhint.warn{color:#b4762a}
.qqlayer .qqweb{display:block;margin-top:14px;padding-top:13px;border-top:1px dashed var(--line-2);
  font-size:11px;color:var(--muted);border-bottom:0;transition:.2s}
.qqlayer .qqweb:hover{color:var(--accent)}
.qqlayer .qqalt{margin:10px 0 0;font-size:11px;line-height:1.8;color:var(--dim)}
.qqlayer .qqalt a{color:var(--accent);border-bottom:1px solid #cdd9f6;padding-bottom:1px}
@keyframes qq-fade{from{opacity:0}to{opacity:1}}
@keyframes qq-pop{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
@media (max-width:520px){
  .qqlayer{padding:16px}
  .qqlayer .qqbox{padding:26px 22px 20px;border-radius:18px}
  .qqlayer .qqnum{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  .qqlayer .qqbox,.qqlayer .qqmask{animation:none}
}
.qqlayer .qqbox:focus{outline:none}
.qqlayer .qqgo[hidden]{display:none}
.qqlayer .qqgo.ok{background:#2f7a63;box-shadow:0 12px 26px rgba(47,122,99,.22)}