/* ============ 智联工具站 · 前台样式 ============ */
:root{
  --brand:#1b3a8f; --brand-2:#2f57c4; --brand-soft:#eaf0ff; --brand-line:#c9d8ff;
  --bg:#f5f7fc; --card:#ffffff; --bg-soft:#eef2f9;
  --text:#101a2e; --text-2:#4d5b73; --text-3:#8b98ad;
  --line:#e4e9f2;
  --sh:0 1px 2px rgba(16,26,46,.04),0 4px 14px -8px rgba(16,26,46,.10);
  --sh-h:0 2px 4px rgba(16,26,46,.05),0 18px 40px -16px rgba(16,26,46,.22);
  --r:14px; --navh:70px;
}
[data-theme="dark"]{
  --brand:#9db8f5; --brand-2:#7fa3ef; --brand-soft:#131e36; --brand-line:#1f2f4d;
  --bg:#080e1b; --card:#101a2c; --bg-soft:#0c1523;
  --text:#e9eef9; --text-2:#9dabc2; --text-3:#66738a;
  --line:#1a2740;
  --sh:0 1px 2px rgba(0,0,0,.35); --sh-h:0 20px 44px -18px rgba(0,0,0,.7);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--navh) + 18px)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.72;-webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:blur(14px) saturate(160%);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.nav.stuck{box-shadow:0 8px 24px -18px rgba(16,26,46,.5)}
.nav-in{display:flex;align-items:center;height:var(--navh);gap:18px;transition:height .28s ease}
.nav.stuck .nav-in{height:60px}
.sbtn{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:var(--card);
  color:var(--text-2);cursor:pointer;display:grid;place-items:center;transition:.2s;box-shadow:var(--sh);flex:0 0 auto}
.sbtn:hover{color:var(--brand);border-color:var(--brand-line);transform:translateY(-1px)}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.lmark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-family:Georgia,serif;font-size:16px;
  box-shadow:0 6px 16px -6px color-mix(in srgb,var(--brand) 70%,transparent)}
.ltxt b{display:block;font-size:15.5px;font-weight:600;letter-spacing:.06em;line-height:1.25}
.ltxt i{display:block;font-style:normal;font-size:9px;letter-spacing:.22em;color:var(--text-3);
  text-transform:uppercase;line-height:1.3}
.nlinks{display:flex;gap:4px;margin-left:auto;font-size:14px;color:var(--text-2)}
.nlinks a{padding:8px 14px;border-radius:9px;transition:background .2s,color .2s}
.nlinks a:hover,.nlinks a.active{background:var(--brand-soft);color:var(--brand)}
.nav-cta{padding:9px 18px;background:var(--brand);color:#fff;border-radius:10px;font-size:13.5px;
  font-weight:500;transition:transform .2s;box-shadow:0 8px 20px -10px color-mix(in srgb,var(--brand) 90%,transparent)}
.nav-cta:hover{transform:translateY(-1px)}
.tbtn{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:var(--card);
  color:var(--text-2);cursor:pointer;display:grid;place-items:center;transition:.2s;box-shadow:var(--sh);flex:0 0 auto}
.tbtn:hover{color:var(--brand);border-color:var(--brand-line);transform:translateY(-1px)}
.bbtn{display:none;width:36px;height:36px;border:1px solid var(--line);border-radius:10px;
  background:var(--card);color:var(--text);cursor:pointer}
.mnav{display:none;flex-direction:column;border-top:1px solid var(--line);background:var(--card)}
.mnav a{padding:14px 28px;border-bottom:1px solid var(--line);font-size:15px}
.mnav.open{display:flex}

/* ---------- 搜索层 ---------- */
.search-layer{position:fixed;inset:0;z-index:90;background:rgba(8,14,27,.42);
  backdrop-filter:blur(6px);display:none;padding-top:14vh}
.search-layer.on{display:block}
.search-box{max-width:620px;margin:0 auto;background:var(--card);border-radius:16px;
  box-shadow:0 30px 60px -20px rgba(0,0,0,.4);overflow:hidden;border:1px solid var(--line)}
#searchInput{width:100%;border:none;outline:none;padding:18px 22px;font-size:16px;
  background:transparent;color:var(--text);font-family:inherit}
.search-results{max-height:52vh;overflow:auto;border-top:1px solid var(--line)}
.sr-item{display:flex;gap:12px;padding:13px 22px;border-bottom:1px solid var(--line);align-items:baseline}
.sr-item:hover{background:var(--brand-soft)}
.sr-type{font-size:11px;padding:2px 8px;border-radius:999px;background:var(--brand-soft);color:var(--brand);flex:0 0 auto}
.sr-t{font-size:14.5px;font-weight:500}
.sr-d{font-size:12.5px;color:var(--text-3);margin-top:2px}
.sr-empty{padding:26px 22px;color:var(--text-3);font-size:13.5px;text-align:center}

/* ---------- Hero ---------- */
.hero{padding:66px 0 0}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);
  border:1px solid var(--brand-line);color:var(--brand);font-size:12.5px;
  padding:6px 14px;border-radius:999px;margin-bottom:22px}
.pill .live{width:6px;height:6px;border-radius:50%;background:#22c55e;position:relative}
.pill .live::after{content:"";position:absolute;inset:-3px;border-radius:50%;
  background:rgba(34,197,94,.35);animation:pulse 2s infinite}
@keyframes pulse{0%{transform:scale(.5);opacity:.9}70%{transform:scale(1.8);opacity:0}100%{opacity:0}}
.hero h1{font-size:clamp(29px,4.1vw,49px);line-height:1.32;font-weight:600;letter-spacing:-.012em}
.hero-sub{margin-top:20px;font-size:16.5px;color:var(--text-2);max-width:34em;line-height:1.95}
.hero-cta{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;
  font-size:14.5px;border-radius:11px;border:1px solid transparent;cursor:pointer;
  font-family:inherit;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s}
.btn-p{background:var(--brand);color:#fff;font-weight:500;
  box-shadow:0 10px 24px -10px color-mix(in srgb,var(--brand) 80%,transparent)}
.btn-p:hover{transform:translateY(-2px)}
.btn-g{background:var(--card);border-color:var(--line);color:var(--text);box-shadow:var(--sh)}
.btn-g:hover{border-color:var(--brand-line);color:var(--brand);transform:translateY(-2px)}
.btn .arw{transition:transform .25s}
.btn:hover .arw{transform:translateY(2px)}
.btn.full{width:100%;margin-top:10px;padding:12px}
.trust{display:flex;gap:20px;margin-top:30px;flex-wrap:wrap;font-size:13px;color:var(--text-2)}
.trust span{display:flex;align-items:center;gap:7px}
.trust svg{color:#22c55e;flex:0 0 auto}

.side{background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:24px 24px 18px;box-shadow:var(--sh-h);position:relative;overflow:hidden}
.side::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.side h5{font-size:11px;letter-spacing:.2em;color:var(--text-3);font-weight:500;margin-bottom:12px}
.srow{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;
  border-bottom:1px dashed var(--line);font-size:13px;gap:10px}
.srow:last-child{border-bottom:none}
.sk{color:var(--text-3);flex:0 0 auto}
.sv{font-variant-numeric:tabular-nums;font-family:ui-monospace,monospace;font-size:12.5px;
  font-weight:500;text-align:right}
.ok{display:inline-flex;align-items:center;gap:6px;color:#16a34a;font-weight:500}
[data-theme="dark"] .ok{color:#4ade80}
.ok::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;
  box-shadow:0 0 0 3px color-mix(in srgb,currentColor 22%,transparent)}

/* ---------- 数据条 ---------- */
.stats{padding:52px 0 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.st{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:20px 20px 16px;box-shadow:var(--sh);transition:transform .22s,box-shadow .22s}
.st:hover{transform:translateY(-3px);box-shadow:var(--sh-h)}
.st-ico{width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;margin-bottom:12px}
.st-n{font-size:27px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2}
.st-l{font-size:12.5px;color:var(--text-3);margin-top:2px}

/* ---------- 区块 ---------- */
.section{padding:72px 0 0}
.shead{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.stitle{font-size:26px;font-weight:600;letter-spacing:-.01em;display:flex;align-items:center;gap:12px}
.stitle .cnt{font-size:12.5px;font-weight:500;color:var(--brand);background:var(--brand-soft);
  padding:2px 10px;border-radius:999px;letter-spacing:0}
.sdesc{margin-top:6px;font-size:14.5px;color:var(--text-2)}
.more{font-size:13.5px;color:var(--brand);display:inline-flex;align-items:center;gap:5px;
  padding:7px 14px;border-radius:9px;background:var(--brand-soft);transition:.2s;white-space:nowrap}
.more:hover{background:var(--brand);color:#fff}

/* ---------- 分类标签 ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.tab{font-size:13.5px;padding:8px 17px;border-radius:10px;border:1px solid var(--line);
  background:var(--card);color:var(--text-2);cursor:pointer;font-family:inherit;
  transition:background .2s,color .2s,border-color .2s,transform .15s,box-shadow .2s;
  display:inline-flex;align-items:center;gap:7px;box-shadow:var(--sh)}
.tab:hover{border-color:var(--brand-line);color:var(--brand);transform:translateY(-1px)}
.tab .n{font-size:11.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.tab.on{background:var(--brand);border-color:var(--brand);color:#fff;
  box-shadow:0 8px 20px -10px color-mix(in srgb,var(--brand) 85%,transparent)}
.tab.on .n{color:rgba(255,255,255,.72)}

/* ---------- 资料卡 ---------- */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;display:flex;flex-direction:column;box-shadow:var(--sh);overflow:hidden;
  transition:transform .25s cubic-bezier(.34,1.3,.64,1),box-shadow .25s,border-color .25s;position:relative}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--brand-line)}
.pcard::after{content:"";position:absolute;inset:0 auto 0 0;width:2px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .3s}
.pcard:hover::after{transform:scaleY(1)}
.pcover{margin:-22px -22px 16px;height:140px;overflow:hidden;background:var(--bg-soft)}
.pcover img{width:100%;height:100%;object-fit:cover}
.ptag{display:inline-flex;align-self:flex-start;font-size:11.5px;padding:3px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-weight:500;margin-bottom:13px}
.pcard h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:8px}
.pcard p{font-size:13.5px;color:var(--text-2);line-height:1.82;flex:1}
.pfoot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;
  padding-top:14px;border-top:1px solid var(--line)}
.pprice{font-size:22px;font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.pprice small{font-size:13px;font-weight:500;margin-right:1px}
.pbtn{font-size:12.5px;padding:7px 14px;border-radius:9px;background:var(--brand-soft);
  color:var(--brand);font-weight:500;transition:.2s}
.pcard:hover .pbtn{background:var(--brand);color:#fff}
.card-enter{animation:cardIn .42s cubic-bezier(.16,1,.3,1) both}
@keyframes cardIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}

/* ---------- 工具卡 ---------- */
.tools{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tcover{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;
  box-shadow:var(--sh);transition:transform .2s,box-shadow .2s,border-color .2s,background .25s;
  display:flex;flex-direction:column;gap:4px;position:relative;overflow:hidden}
.tcover::before{content:"";position:absolute;top:0;left:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.4,0,.2,1);z-index:2}
.tcover:hover::before{transform:scaleX(1)}
.tcover::after{content:"";position:absolute;inset:auto auto -45% -25%;width:80%;height:130%;
  background:radial-gradient(closest-side,color-mix(in srgb,var(--brand) 16%,transparent),transparent);
  opacity:0;transition:opacity .35s;pointer-events:none}
.tcover:hover::after{opacity:1}
.tcover:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:var(--brand-line);
  background:color-mix(in srgb,var(--brand-soft) 45%,var(--card))}
.tcover:hover .tname{color:var(--brand)}
.tname{font-size:14px;font-weight:600;transition:color .2s}
.tdesc{font-size:12.5px;color:var(--text-3);line-height:1.62}
.tmeta{display:flex;justify-content:space-between;align-items:center;margin-top:8px;padding-top:8px;
  border-top:1px solid var(--line);font-size:11px;color:var(--text-3);
  font-variant-numeric:tabular-nums;font-family:ui-monospace,monospace}
.free{color:#16a34a;font-weight:600}
[data-theme="dark"] .free{color:#4ade80}

/* ---------- 文章 ---------- */
.arts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.art{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;
  box-shadow:var(--sh);display:block;position:relative;overflow:hidden;
  transition:transform .22s,box-shadow .22s,border-color .22s,background .25s}
.art::before{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform .42s cubic-bezier(.4,0,.2,1)}
.art:hover::before{transform:scaleX(1)}
.art::after{content:"→";position:absolute;top:18px;right:20px;font-size:15px;color:var(--brand);
  opacity:0;transform:translate(-6px,6px);transition:opacity .28s,transform .28s}
.art:hover::after{opacity:1;transform:none}
.art:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:var(--brand-line);
  background:color-mix(in srgb,var(--brand-soft) 40%,var(--card))}
.acat{font-size:11px;color:var(--brand);letter-spacing:.14em;margin-bottom:10px}
.art h3{font-size:15.5px;font-weight:600;line-height:1.6;margin-bottom:8px;transition:color .2s}
.art:hover h3{color:var(--brand)}
.art p{font-size:13px;color:var(--text-2);line-height:1.78}
.adate{margin-top:13px;font-size:11.5px;color:var(--text-3);font-family:ui-monospace,monospace}

/* ---------- 信任条 ---------- */
.trustbar{margin-top:72px;background:var(--card);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);padding:28px 0}
.tb-in{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.tb-i{font-size:13px;color:var(--text-2)}
.tb-i b{display:block;font-size:15px;color:var(--text);font-weight:600;margin-bottom:3px}

/* ---------- 页脚 ---------- */
.foot{background:var(--card);border-top:1px solid var(--line);padding:50px 0 28px;margin-top:0}
.foot-in{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:32px;
  border-bottom:1px solid var(--line)}
.foot h4{font-size:12px;letter-spacing:.16em;color:var(--text-3);font-weight:500;margin-bottom:13px}
.foot ul{list-style:none;display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:var(--text-2)}
.foot ul a{transition:color .2s}
.foot ul a:hover{color:var(--brand)}
.foot p{font-size:13px;color:var(--text-2);line-height:1.95;max-width:30em;margin-top:12px}
.foot-bot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:20px;
  font-size:12px;color:var(--text-3)}
.foot-bot a:hover{color:var(--brand)}

/* ---------- 内页通用 ---------- */
.page-head{padding-top:44px;padding-bottom:22px}
.crumb{font-size:12.5px;color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.pth1{font-size:clamp(24px,3.2vw,34px);font-weight:600;margin-top:12px;letter-spacing:-.01em}
.ptsub{margin-top:8px;color:var(--text-2);font-size:14.5px}
.empty{padding:60px 0;text-align:center;color:var(--text-3);font-size:14px;grid-column:1/-1}

/* ---------- 详情页 ---------- */
.detail{display:grid;grid-template-columns:1.7fr .8fr;gap:44px;padding-bottom:70px;align-items:start}
.dh1{font-size:clamp(24px,3.2vw,34px);font-weight:600;line-height:1.35;letter-spacing:-.01em}
.dmeta{display:flex;gap:14px;align-items:center;margin-top:14px;font-size:12.5px;color:var(--text-3);flex-wrap:wrap}
.dmeta .ptag{margin-bottom:0}
.dcover{margin-top:24px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.dsum{margin-top:22px;font-size:16px;color:var(--text-2);line-height:1.9;padding-left:14px;
  border-left:3px solid var(--brand-line)}
.dsec{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.dsec h3{font-size:17px;font-weight:600;margin-bottom:16px}

.detail-side{position:sticky;top:92px}
.buy-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;
  box-shadow:var(--sh-h)}
.price-row{display:flex;align-items:baseline;gap:10px;margin-bottom:16px}
.big-price{font-size:32px;font-weight:700;color:var(--brand);letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.big-price small{font-size:16px;font-weight:600;margin-right:2px}
.orig{font-size:14px;color:var(--text-3);text-decoration:line-through}
.buy-list{list-style:none;display:flex;flex-direction:column;gap:9px;margin-bottom:18px;
  font-size:13px;color:var(--text-2)}
.buy-list li{padding-left:20px;position:relative}
.buy-list li::before{content:"✓";position:absolute;left:0;color:#22c55e;font-weight:700;font-size:12px}
.tiny{margin-top:12px;font-size:11.5px;color:var(--text-3);text-align:center}
.tiny code{background:var(--bg-soft);padding:1px 6px;border-radius:4px;font-size:11px}
.side-rel{margin-top:20px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.side-rel h4{font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-bottom:12px;font-weight:500}
.rel-item{display:flex;justify-content:space-between;gap:10px;padding:9px 0;font-size:13.5px;
  border-bottom:1px dashed var(--line);transition:color .2s}
.rel-item:last-child{border-bottom:none}
.rel-item:hover{color:var(--brand)}
.rel-item b{color:var(--brand);font-weight:600;flex:0 0 auto}

/* ---------- 正文排版 ---------- */
.prose{font-size:16px;line-height:1.95;color:var(--text);margin-top:26px}
.prose h2{font-size:21px;font-weight:600;margin:38px 0 14px;letter-spacing:-.01em}
.prose h3{font-size:17.5px;font-weight:600;margin:28px 0 10px}
.prose h4{font-size:15.5px;font-weight:600;margin:22px 0 8px}
.prose p{margin:14px 0}
.prose ul,.prose ol{margin:14px 0 14px 22px}
.prose li{margin:7px 0}
.prose strong{font-weight:600;color:var(--text)}
.prose a{color:var(--brand);border-bottom:1px solid var(--brand-line)}
.prose a:hover{border-bottom-color:var(--brand)}
.prose blockquote{margin:18px 0;padding:12px 18px;border-left:3px solid var(--brand-line);
  background:var(--bg-soft);border-radius:0 8px 8px 0;color:var(--text-2)}
.prose code{background:var(--bg-soft);padding:2px 6px;border-radius:5px;font-size:.9em;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.prose pre{background:var(--bg-soft);padding:16px 18px;border-radius:10px;overflow:auto;margin:18px 0}
.prose pre code{background:none;padding:0}
.prose hr{border:none;border-top:1px solid var(--line);margin:30px 0}
.prose figure{margin:22px 0}
.prose figcaption{font-size:12.5px;color:var(--text-3);text-align:center;margin-top:8px}
.prose-page{margin:0 0 70px;background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:44px 46px;box-shadow:var(--sh)}
.narrow{max-width:820px;margin:0 auto}
.article-wrap{max-width:820px;padding-bottom:60px}
.article-wrap .prose{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:38px 40px;box-shadow:var(--sh)}

.progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--brand),var(--brand-2));
  z-index:100;transition:width .1s linear}

.inline-product{margin-top:40px;background:var(--card);border:1px solid var(--brand-line);
  border-radius:16px;padding:24px 26px;box-shadow:var(--sh)}
.ip-tag{font-size:11px;letter-spacing:.16em;color:var(--brand);margin-bottom:8px}
.inline-product h3{font-size:17px;font-weight:600;margin-bottom:6px}
.inline-product p{font-size:13.5px;color:var(--text-2);line-height:1.8}
.ip-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;gap:20px;flex-wrap:wrap}

/* ---------- 错误页 ---------- */
.err-wrap{text-align:center;padding:110px 0 120px}
.err-code{font-size:64px;font-weight:700;color:var(--brand);opacity:.18;letter-spacing:-.04em;line-height:1}
.err-wrap h1{font-size:24px;font-weight:600;margin:14px 0 12px}
.err-wrap p{color:var(--text-2);font-size:14.5px;line-height:1.9}
.err-actions{display:flex;gap:12px;justify-content:center;margin-top:28px;flex-wrap:wrap}

/* ---------- 客服 ---------- */
.cs{position:fixed;right:26px;bottom:26px;z-index:80;width:54px;height:54px;border-radius:16px;
  background:var(--brand);color:#fff;border:none;cursor:pointer;display:grid;place-items:center;
  box-shadow:0 14px 32px -10px color-mix(in srgb,var(--brand) 75%,transparent);
  transition:transform .25s cubic-bezier(.34,1.56,.64,1)}
.cs:hover{transform:translateY(-3px) scale(1.04)}
.cs-dot{position:absolute;top:-3px;right:-3px;width:11px;height:11px;border-radius:50%;background:#ef4444;
  border:2px solid var(--bg)}
.cs-panel{position:fixed;right:26px;bottom:92px;z-index:85;width:380px;max-width:calc(100vw - 32px);
  height:520px;max-height:calc(100vh - 140px);background:var(--card);border:1px solid var(--line);
  border-radius:16px;box-shadow:0 30px 60px -20px rgba(0,0,0,.35);display:none;flex-direction:column;overflow:hidden}
.cs-panel.on{display:flex}
.cs-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;
  border-bottom:1px solid var(--line);background:var(--bg-soft)}
.cs-head b{font-size:14.5px;font-weight:600}
.cs-head span{font-size:11.5px;color:#16a34a;margin-left:8px}
.cs-head button{border:none;background:none;color:var(--text-3);font-size:15px;cursor:pointer}
.cs-body{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:82%;padding:10px 14px;border-radius:12px;font-size:13.5px;line-height:1.7;position:relative}
.msg .t{display:block;font-size:10.5px;color:var(--text-3);margin-top:5px}
.msg.user{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.msg.user .t{color:rgba(255,255,255,.72);text-align:right}
.msg.admin,.msg.system{align-self:flex-start;background:var(--bg-soft);border-bottom-left-radius:4px}
.msg.system{color:var(--text-2);font-size:13px}
.cs-quick{padding:0 16px 10px;display:flex;flex-wrap:wrap;gap:6px;max-height:96px;overflow:auto}
.qchip{font-size:12px;padding:5px 11px;border-radius:999px;border:1px solid var(--brand-line);
  background:var(--brand-soft);color:var(--brand);cursor:pointer;transition:.2s}
.qchip:hover{background:var(--brand);color:#fff}
.cs-input{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--line)}
.cs-input input{flex:1;border:1px solid var(--line);border-radius:9px;padding:9px 12px;
  font-size:13.5px;background:var(--bg);color:var(--text);outline:none;font-family:inherit}
.cs-input input:focus{border-color:var(--brand-line)}
.cs-input button{border:none;background:var(--brand);color:#fff;border-radius:9px;padding:0 16px;
  font-size:13.5px;cursor:pointer;font-family:inherit}

/* ---------- 回顶 ---------- */
.top{position:fixed;right:32px;bottom:96px;z-index:70;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:var(--card);color:var(--text-2);cursor:pointer;
  display:grid;place-items:center;opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .25s,transform .25s,color .2s,border-color .2s;box-shadow:var(--sh)}
.top.on{opacity:1;pointer-events:auto;transform:none}
.top:hover{color:var(--brand);border-color:var(--brand-line)}

/* ---------- 入场 ---------- */
.rv{opacity:0;transform:translateY(16px);
  transition:opacity .65s cubic-bezier(.16,1,.3,1),transform .65s cubic-bezier(.16,1,.3,1)}
.rv.in{opacity:1;transform:none}
html[data-anim="0"] .rv{opacity:1;transform:none;transition:none}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .wrap{padding:0 20px}
  .nlinks{display:none}.bbtn{display:grid;place-items:center}.nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .pgrid{grid-template-columns:repeat(2,1fr)}
  .tools{grid-template-columns:repeat(3,1fr)}
  .arts{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .tb-in{grid-template-columns:repeat(2,1fr);gap:22px}
  .foot-in{grid-template-columns:1fr 1fr}
  .shead{flex-direction:column;align-items:flex-start}
  .detail{grid-template-columns:1fr;gap:26px}
  .detail-side{position:static}
  .prose-page{padding:30px 24px}
  .article-wrap .prose{padding:26px 22px}
}
@media(max-width:640px){
  :root{--navh:60px}
  .hero{padding:40px 0 0}
  .hero h1{font-size:26px}
  .hero-sub{font-size:15px}
  .btn{flex:1;padding:13px 16px}
  .trust{gap:12px;font-size:12.5px}
  .section{padding:50px 0 0}
  .stitle{font-size:21px}
  .pgrid{grid-template-columns:1fr;gap:12px}
  .tools{grid-template-columns:repeat(2,1fr);gap:10px}
  .stats-grid{gap:10px}
  .st{padding:15px}
  .st-n{font-size:21px}
  .tabs{gap:6px}
  .tab{padding:7px 13px;font-size:12.5px}
  .foot-in{grid-template-columns:1fr}
  .cs{right:16px;bottom:16px;width:50px;height:50px;border-radius:14px}
  .cs-panel{right:12px;left:12px;bottom:76px;width:auto;height:70vh}
  .top{right:18px;bottom:80px}
  .page-head{padding-top:30px;padding-bottom:16px}
  .prose{font-size:15px}
  .prose-page{margin-bottom:44px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
}