/* 铜匠实验室 · 站点样式（lab.tongjiang.app）。设计变量取自 docs/视觉规范-清透实验室.md §2（与课件外壳 shared/step/shell.css 同值） */
:root{
  --font:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif; --num:"SF Pro Display","DIN Alternate","Helvetica Neue",system-ui,sans-serif;
  --ink:#0E1A2B; --ink2:#43526A; --ink3:#56627A; --line:rgba(14,26,43,.08); --tint:#F3F7FF; --bg:#F6F8FC;
  --sci:#2F6BFF; --cyan:#13B8C6; --violet:#7C5CFF; --sci-d:#1E4FD8; --ok:#10B981; --ok-d:#036646;
  --grad:linear-gradient(100deg,#2F6BFF 0%,#13B8C6 100%);
  --glass:rgba(255,255,255,.84); --glass-edge:1px solid rgba(255,255,255,.75);
  --shadow-1:0 2px 8px rgba(30,50,110,.08); --shadow-2:0 10px 32px rgba(30,50,110,.14);
  --phys:#3F7FB5; --chem:#0B8A9C; --bio:#2E8B57; --geo:#A8691E;
  --navy:#0B1426; --navy2:#0F1D36;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.6}
a{color:inherit;text-decoration:none} button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
.in{max-width:1320px;margin:0 auto;padding:0 32px}
.s-phys{--c:var(--phys)} .s-chem{--c:var(--chem)} .s-bio{--c:var(--bio)} .s-geo{--c:var(--geo)}
.btn{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;font-weight:700;white-space:nowrap;transition:transform .15s,box-shadow .2s}
.btn.sm{height:36px;padding:0 16px;font-size:14px}
.btn.grad{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(47,107,255,.32)}
.btn.grad:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(47,107,255,.4)}
.btn.ghost{border:1px solid rgba(255,255,255,.28);color:#fff;background:rgba(255,255,255,.06)}
.btn.ghost:hover{background:rgba(255,255,255,.12)}

/* 顶栏：压在深色首屏上时是深色玻璃 */
.nav{position:sticky;top:0;z-index:20;background:rgba(11,20,38,.72);backdrop-filter:blur(14px) saturate(150%);border-bottom:1px solid rgba(255,255,255,.08);color:#fff}
.nav .in{display:flex;align-items:center;gap:36px;height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo i{width:32px;height:32px;border-radius:9px;background:var(--grad);display:grid;place-items:center;font-style:normal;font-weight:800;color:#fff;box-shadow:0 4px 12px rgba(47,107,255,.35)}
.logo b{font-size:17px;letter-spacing:.02em} .logo small{font-size:12px;opacity:.55;letter-spacing:.04em}
.nav nav{display:flex;gap:28px;font-size:15px;opacity:.85} .nav nav a:hover{opacity:1;color:#8fd9ff}
.nav .rt{margin-left:auto;display:flex;align-items:center;gap:16px;font-size:14px}
.lang{opacity:.7} .lang b{color:#fff;opacity:1} .by{opacity:.6}
.ic{opacity:.8;display:grid} .ic:hover{opacity:1}

/* B 首屏：仪器屏 */
.hero{background:radial-gradient(1200px 600px at 75% 30%,#16305f 0%,transparent 60%),linear-gradient(180deg,var(--navy) 0%,var(--navy2) 100%);color:#fff;overflow:hidden;position:relative}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);background-size:40px 40px;mask-image:linear-gradient(180deg,#000 40%,transparent)}
.hero .in{position:relative;display:grid;grid-template-columns:minmax(420px,1fr) 1.3fr;gap:44px;align-items:center;padding-top:56px;padding-bottom:64px}
.kick{font:600 12px/1 var(--num);letter-spacing:.22em;color:#7fd6ff;margin-bottom:18px}
.hero h1 span{display:block;white-space:nowrap}
.hero h1{font-size:clamp(28px,2.75vw,44px);line-height:1.2;margin:0 0 18px;letter-spacing:.01em}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{color:rgba(255,255,255,.72);font-size:16px;line-height:1.75;margin:0 0 22px;max-width:34em}
.pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.pills span{border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);border-radius:999px;padding:6px 13px;font-size:13px;color:rgba(255,255,255,.85)}
.pills b{font-family:var(--num);color:#fff;margin-right:2px}
.acts{display:flex;gap:12px;flex-wrap:wrap}
.lab{display:grid;grid-template-columns:1fr 272px;gap:0;border:1px solid rgba(140,190,255,.18);border-radius:18px;background:rgba(10,24,52,.55);box-shadow:0 30px 80px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.06);overflow:hidden;min-height:460px}
.stage{position:relative;min-height:440px;cursor:grab} .stage:active{cursor:grabbing}
.stage canvas{position:absolute;inset:0;width:100%!important;height:100%!important;display:block}
.hint{position:absolute;left:16px;bottom:14px;z-index:1;display:flex;align-items:center;gap:6px;font-size:12px;color:rgba(200,225,255,.6);pointer-events:none}
.panel{border-left:1px solid rgba(140,190,255,.14);padding:20px 20px 18px;display:flex;flex-direction:column;gap:14px;background:rgba(255,255,255,.025)}
.ph1{font-size:13px;font-weight:700;color:#cfe3ff}
.panel label{display:grid;grid-template-columns:1fr auto;align-items:baseline;gap:8px;font-size:13px;color:rgba(255,255,255,.7)}
.panel label i{font-family:"Times New Roman",serif;font-style:italic;color:#fff;font-size:15px;margin-left:2px}
.panel output{font:600 14px var(--num);color:#7fe3ff;font-variant-numeric:tabular-nums}
.panel input[type=range]{grid-column:1/-1;width:100%;accent-color:#13B8C6;height:4px}
.seg{display:grid;grid-template-columns:1fr 1fr;padding:3px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08)}
.seg button{border-radius:999px;padding:6px 0;font-size:12.5px;color:rgba(255,255,255,.7)} .seg button.on{background:var(--grad);color:#fff;font-weight:700}
.read{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.read div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:10px 12px}
.read small{display:block;font-size:12px;color:rgba(255,255,255,.6)}
.read s{display:block;text-decoration:none;font:500 11px var(--num);color:rgba(255,255,255,.4);margin-bottom:4px;white-space:nowrap}
.read b{font:700 26px/1.1 var(--num);font-variant-numeric:tabular-nums} .read u{text-decoration:none;font-size:13px;font-weight:600;margin-left:3px;opacity:.7}
.read em{display:block;font-style:normal;font-size:11px;color:#ffc46b;font-weight:600}
.note{margin:0;font-size:12.5px;line-height:1.6;color:#bfe9ff;background:rgba(19,184,198,.1);border-left:2px solid #13B8C6;padding:8px 10px;border-radius:0 8px 8px 0}

.live{position:absolute;left:16px;top:14px;z-index:1;display:flex;align-items:center;gap:6px;font:600 11px var(--num);letter-spacing:.12em;color:#7fe3ff;background:rgba(19,184,198,.12);border:1px solid rgba(19,184,198,.3);border-radius:999px;padding:4px 10px;pointer-events:none}
.live i{width:6px;height:6px;border-radius:50%;background:#3fe0ff;box-shadow:0 0 8px #3fe0ff;animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.3}}
.lg{margin-top:auto;display:flex;gap:12px;font-size:12px;color:rgba(255,255,255,.6)} .lg span{display:flex;align-items:center;gap:5px}
.lg i{width:14px;height:3px;border-radius:2px} .lv{background:#3fe0ff} .lf{background:#ffa040} .lb{background:#5fd4ff;opacity:.5}

/* A 学科入口 */
.subjects{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:-34px 0 0;position:relative;z-index:2}
.sc{position:relative;display:flex;min-height:168px;border-radius:16px;overflow:hidden;background:var(--glass);border:var(--glass-edge);box-shadow:var(--shadow-2);backdrop-filter:blur(12px);transition:transform .2s,box-shadow .2s}
.sc:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(30,50,110,.2)}
.sc::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c)}
.sc .tx{position:relative;z-index:1;padding:18px 0 16px 22px;width:58%;display:flex;flex-direction:column}
.sc small{font:600 11px var(--num);letter-spacing:.14em;color:var(--c);text-transform:uppercase}
.sc h3{margin:2px 0 4px;font-size:22px} .sc p{margin:0;font-size:13px;line-height:1.55;color:var(--ink2)}
.sc .n{margin-top:auto;padding-top:8px;font-size:13px;font-weight:700;color:var(--c);display:flex;align-items:center;gap:4px}
.sc img{position:absolute;right:-18%;top:0;height:100%;width:78%;object-fit:cover;mask-image:linear-gradient(90deg,transparent 0%,#000 45%)}

/* 小节标题 */
.sh small{display:block;font:700 12px var(--num);letter-spacing:.2em;color:var(--sci);margin-bottom:4px}
/* 最新上线 */
.feat{padding:56px 0 0}
.feat h2{margin-bottom:18px}
.fg{display:grid;grid-template-columns:1.6fr 1fr;grid-template-rows:1fr 1fr;gap:18px;height:440px}
.fg .fc{position:relative;border-radius:18px;overflow:hidden;display:block;box-shadow:var(--shadow-2);background:#dce8ff}
.fg .fc.big{grid-row:1/3}
.fg img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s}
.fg .fc:hover img{transform:scale(1.04)}
.fg .ov{position:absolute;left:0;right:0;bottom:0;padding:18px 22px;background:linear-gradient(transparent,rgba(8,18,40,.78));color:#fff}
.fg .ov h3{margin:6px 0 2px;font-size:20px} .fg .big .ov h3{font-size:28px}
.fg .ov p{margin:0 0 6px;font-size:13.5px;color:rgba(255,255,255,.8);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.fg .ov .sj{position:static;display:inline-block}
.fg .go{color:#8fd9ff}
/* C 课程库 */
.lib{padding:56px 0 20px}
.lh{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:18px}
h2{font-size:28px;margin:0;letter-spacing:.01em} .lh p{margin:4px 0 0;color:var(--ink3);font-size:14px}
.search{display:flex;align-items:center;gap:8px;width:min(420px,100%);height:44px;padding:0 14px;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-1);color:var(--ink3)}
.search:focus-within{border-color:var(--sci);box-shadow:0 0 0 3px rgba(47,107,255,.15)}
.search input{flex:1;border:0;outline:0;font:inherit;color:var(--ink);background:none}
kbd{font:600 11px var(--num);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:var(--ink3)}
.filters{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.pill{display:flex;gap:6px;flex-wrap:wrap}
.pill button{height:36px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:600;color:var(--ink2);display:flex;align-items:center;gap:7px}
.pill button:hover{border-color:rgba(47,107,255,.35)}
.pill button.on{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 4px 12px rgba(47,107,255,.25)}
.pill button em{font-style:normal;font:600 12px var(--num);opacity:.6}
.sel{display:flex;gap:8px} .sel[hidden]{display:none}
.sel select{height:36px;border-radius:999px;border:1px solid var(--line);background:#fff;padding:0 14px;font:inherit;font-size:14px;color:var(--ink2);box-shadow:var(--shadow-1)}
.d{width:8px;height:8px;border-radius:50%;background:var(--c)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.cc{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s,box-shadow .2s}
.cc[hidden]{display:none}
.cc:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(30,50,110,.16),0 0 0 1px var(--c) inset}
.cv{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#eef3ff,#dce8ff);overflow:hidden}
.cv img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.cc:hover .cv img{transform:scale(1.05)}
.cv .ph{position:absolute;inset:0;display:grid;place-items:center;padding:0 20px;text-align:center;font-weight:800;color:var(--ink2)}
.sj{position:absolute;left:10px;top:10px;background:var(--c);color:#fff;font-size:12px;font-weight:700;border-radius:6px;padding:1px 8px}
.st{position:absolute;right:10px;top:10px;font-size:12px;font-weight:700;border-radius:6px;padding:1px 8px;background:rgba(255,255,255,.92);color:var(--ink3)}
.st.ok{color:var(--ok-d)}
.bd{padding:12px 14px 14px;display:flex;flex-direction:column;flex:1}
.bd h3{margin:0;font-size:16px;line-height:1.45}
.bd p{margin:3px 0 0;font-size:12.5px;color:var(--ink3);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.mt{margin-top:auto;padding-top:10px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--ink3)}
.go{display:flex;align-items:center;gap:4px;font-weight:700;color:var(--sci-d)}
.soon .go{color:var(--ink3);font-weight:500} .soon .cv img{filter:saturate(.75);opacity:.85}
.empty{text-align:center;color:var(--ink3);padding:40px 0}

/* 用法 + 制作方法 */
.how{padding:56px 0 8px} .how h2{margin-bottom:18px} .more2{margin:14px 0 0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.steps div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow-1)}
.steps b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--tint);color:var(--sci-d);font:800 15px var(--num)}
.steps h4{margin:10px 0 4px;font-size:16px} .steps p{margin:0;font-size:13.5px;color:var(--ink2)}
.make{padding:40px 0 64px}
.mk{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:34px 40px;border-radius:20px;color:#fff;background:radial-gradient(600px 300px at 85% 20%,#1c3d7a,transparent),linear-gradient(120deg,var(--navy),#132a52)}
.mk .btn.ghost{border-color:rgba(255,255,255,.3)}
.mk small{font:600 12px var(--num);letter-spacing:.2em;color:#7fd6ff} .mk h2{margin:6px 0 8px;font-size:26px} .mk p{margin:0;color:rgba(255,255,255,.7)}
footer{background:#fff;border-top:1px solid var(--line)}
footer .in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding-top:36px;padding-bottom:28px}
footer .logo b{color:var(--ink)} footer p{color:var(--ink2);font-size:14px;margin:8px 0}
.so{display:flex;gap:18px;font-size:14px;color:var(--ink2)} .so a{display:flex;align-items:center;gap:6px} .so a:hover{color:var(--sci-d)}
footer h5{margin:0 0 10px;font-size:14px}
.lk{display:inline-flex;align-items:center;gap:4px;color:var(--sci-d);font-weight:700;font-size:14px}
.fb{grid-column:1/-1;border-top:1px solid var(--line);padding-top:16px;font-size:12.5px;color:var(--ink3)}
@media (max-width:1100px){.hero .in{grid-template-columns:1fr}.subjects{grid-template-columns:1fr 1fr;margin-top:24px}.steps{grid-template-columns:1fr 1fr}}
@media (max-width:720px){.in{padding:0 18px}.lab{grid-template-columns:1fr}.panel{border-left:0;border-top:1px solid rgba(140,190,255,.14)}.subjects{grid-template-columns:1fr}.lh,.mk{flex-direction:column;align-items:flex-start}footer .in{grid-template-columns:1fr}}

/* 课程页 */
.course{padding-top:22px;padding-bottom:40px}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink3);margin-bottom:14px} .crumb a:hover{color:var(--sci-d)}
.ch{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.ch .sj{position:static;font-size:14px;padding:3px 10px}
.ch h1{margin:0;font-size:34px}
.tags{display:flex;gap:6px} .tags span{background:var(--tint);color:var(--ink2);border-radius:999px;padding:3px 11px;font-size:13px;font-weight:600} .tags .ok{color:var(--ok-d);background:#E7F8F1}
.lead{font-size:17px;color:var(--ink2);margin:10px 0 20px}
.cgrid{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}
.pv{position:relative;display:block;aspect-ratio:16/9;border-radius:18px;overflow:hidden;background:linear-gradient(135deg,#eef3ff,#dce8ff);box-shadow:var(--shadow-2)}
.pv img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s} .pv:hover img{transform:scale(1.02)}
.playbtn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px;height:60px;padding:0 30px;border-radius:999px;background:var(--grad);color:#fff;font-size:19px;font-weight:800;box-shadow:0 10px 30px rgba(47,107,255,.45)}
.real{position:absolute;left:14px;bottom:12px;font-size:12px;background:rgba(255,255,255,.85);color:var(--ink3);border-radius:6px;padding:2px 8px}
.acts2{display:flex;flex-direction:column;gap:10px}
.ab{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-1);color:var(--ink2);transition:box-shadow .2s,transform .2s}
a.ab:hover{transform:translateY(-1px);box-shadow:var(--shadow-2)}
.ab svg{flex:none;margin-top:2px;color:var(--sci-d)} .ab b{display:block;color:var(--ink);font-size:15px} .ab small{display:block;font-size:12.5px;color:var(--ink3)}
.ab.primary{background:var(--grad);border-color:transparent;color:#fff} .ab.primary b,.ab.primary small,.ab.primary svg{color:#fff}
.emb>div{min-width:0;flex:1}
.emb code{display:block;margin-top:8px;font:11.5px/1.5 var(--mono,ui-monospace,monospace);background:var(--tint);border-radius:8px;padding:8px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--ink2)}
.cpy{margin-top:8px;height:30px;padding:0 14px;border-radius:999px;border:1px solid var(--line);font-size:13px;font-weight:700;color:var(--sci-d);background:#fff}
.cgrid2{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;margin-top:20px}
.box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow-1)}
.box h2{font-size:18px;margin-bottom:12px}
.track{list-style:none;margin:0;padding:0;counter-reset:s}
.track li{counter-increment:s;position:relative;padding:0 0 12px 42px;display:flex;flex-direction:column}
.track li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font:700 13px var(--num)}
.track li:not(:last-child)::after{content:"";position:absolute;left:13.5px;top:30px;bottom:2px;width:1px;background:rgba(47,107,255,.25)}
.track b{font-size:15px} .track span{font-size:13.5px;color:var(--ink3)}
.src{margin:0;padding-left:18px;color:var(--ink2);line-height:1.8}
.fine{font-size:12.5px;color:var(--ink3);margin:10px 0 0}
.rel{margin-top:34px} .rel h2{margin-bottom:16px}
/* 文字页 */
.prose{max-width:780px;padding-top:40px;padding-bottom:60px}
.prose h1{font-size:34px;margin:0 0 6px} .prose h2{font-size:21px;margin:30px 0 8px} .prose p,.prose li{color:var(--ink2);line-height:1.85}
.prose a{color:var(--sci-d)}
@media (max-width:1100px){.cgrid,.cgrid2{grid-template-columns:1fr}.fg{grid-template-columns:1fr 1fr;height:auto}.fg .fc{aspect-ratio:16/9}.fg .fc.big{grid-column:1/-1;grid-row:auto}}
/* 作者与关注、分享 */
.me{display:flex;align-items:center;gap:8px;padding:3px 12px 3px 3px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12)}
.me i,.maker i,.ai i{width:30px;height:30px;border-radius:8px;background:#1b2433;border:1px solid rgba(255,255,255,.18);display:grid;place-items:center;font-style:normal;font-weight:800;color:#fff;font-size:15px}
.me span{display:flex;flex-direction:column;line-height:1.15;font-weight:700;font-size:14px} .me small{font-size:10.5px;font-weight:500;opacity:.55}
.fx{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border-radius:999px;background:#fff;color:#0E1A2B;font-weight:800;font-size:13.5px;white-space:nowrap;transition:transform .15s}
.fx:hover{transform:translateY(-1px)}
.fg2{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.2);color:#fff}
.sharebtn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border-radius:999px;background:var(--grad);color:#fff;font-weight:700;font-size:13.5px}
.pop{position:relative}
.pp{position:absolute;right:0;top:calc(100% + 10px);z-index:30;display:none;flex-direction:column;align-items:center;gap:6px;padding:14px;border-radius:14px;background:#fff;color:var(--ink);box-shadow:0 18px 50px rgba(10,20,40,.3);min-width:170px}
.pp::before{content:"";position:absolute;right:22px;top:-6px;width:12px;height:12px;background:#fff;transform:rotate(45deg)}
.pp b{font-size:14px} .pp small{font-size:12px;color:var(--ink3)}
.pop:hover .pp,.pop.open .pp{display:flex}
.pop:hover .pp::after{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.pp.wide{min-width:220px}
.sa{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-top:4px}
.sa a,.sa button{display:inline-flex;align-items:center;gap:5px;height:30px;padding:0 12px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;font-weight:700;color:var(--ink2);background:#fff}
.sa a:hover,.sa button:hover{border-color:var(--sci);color:var(--sci-d)}
.qr{display:block;border-radius:6px}
.maker{display:flex;align-items:center;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:14px;color:rgba(255,255,255,.75)}
.maker b{color:#fff} .maker .fx{height:30px;font-size:12.5px;padding:0 12px}
.fgh{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;border:1px solid rgba(255,255,255,.22);color:#fff;font-weight:700;font-size:12.5px}
.author{display:grid;grid-template-columns:1fr auto;gap:10px 14px;align-items:center;margin-top:14px;padding:14px;border-radius:14px;background:var(--tint);border:1px solid var(--line)}
.ai{display:flex;align-items:center;gap:10px} .ai b{display:block;font-size:15px} .ai small{display:block;font-size:12px;color:var(--ink3)}
.ai i{width:38px;height:38px;font-size:18px}
.ab2{grid-column:1;display:flex;gap:8px;flex-wrap:wrap}
.ab2 .fx{background:#0E1A2B;color:#fff;height:32px} .ab2 .fgh{color:var(--ink);border-color:var(--line);background:#fff;height:32px}
.aq{grid-column:2;grid-row:1/3;display:flex;flex-direction:column;align-items:center;gap:2px} .aq .qr{width:84px;height:84px} .aq small{font-size:11px;color:var(--ink3)}
.author.side{margin-top:0;background:#fff;box-shadow:var(--shadow-1)}
@media (max-width:1180px){.nav nav{display:none}}
@media (max-width:720px){.me span small,.fg2{display:none}.me span{font-size:13px}.nav .in{gap:10px}.logo small{display:none}.pp{right:-40px}}