:root{
  --ink:#1d1d1f; --ink-2:#3a3a3c; --muted:#6e6e73; --muted-2:#86868b;
  --line:#d2d2d7; --line-2:#e8e8ed; --alt:#f5f5f7; --blue:#0071e3; --blue-h:#0077ed;
  --green:#0e9f6e; --amber:#d97706; --red:#e02424;
  --max:1180px; --r:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
body.home .wrap{max-width:var(--max);margin:0 auto;padding:0 32px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.75);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.nav.stuck{border-bottom-color:var(--line-2);background:rgba(255,255,255,.9)}
.nav-in{max-width:var(--max);margin:0 auto;padding:0 32px;height:56px;display:flex;align-items:center;gap:0}
.brand{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:600;letter-spacing:-.02em}
.brand img{width:24px;height:24px;border-radius:7px}
.brand .bt-cn{color:var(--muted);font-weight:400;font-size:13px}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:36px}
.nav-links>div{position:relative;display:flex;align-items:center;gap:0;padding:0}
.nav-links a.top{font-size:12.5px;color:var(--ink-2);display:inline-flex;align-items:center;
  height:56px;padding:0;margin-right:26px;line-height:normal;transition:color .2s;
  white-space:nowrap;vertical-align:middle}
.nav-links a.top:last-child{margin-right:0}
.nav-links a.top:hover{color:var(--blue)}
.mega{position:absolute;top:52px;left:-24px;min-width:520px;background:#fff;border:1px solid var(--line-2);
  border-radius:18px;padding:18px;box-shadow:0 30px 60px -30px rgba(0,0,0,.35);
  display:grid;grid-template-columns:1fr 1fr;gap:6px 18px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s,transform .18s,visibility .18s}
.nav-links>div:hover .mega{opacity:1;visibility:visible;transform:none}
.mega a{display:block;padding:8px 10px;border-radius:10px;transition:background .15s}
.mega a:hover{background:var(--alt)}
.mega b{display:block;font-size:13px;font-weight:600}
.mega span{display:block;font-size:11.5px;color:var(--muted);margin-top:2px}
.mega .grp{grid-column:1/-1;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);margin:8px 0 2px 10px}
.nav-acts{margin-left:auto;display:flex;align-items:center;gap:14px}
.lang{border:1px solid var(--line);background:transparent;color:var(--ink-2);font-size:11.5px;
  padding:4px 9px;border-radius:980px;cursor:pointer;transition:border-color .2s}
.lang:hover{border-color:rgba(0,0,0,.28)}
.cta-link{font-size:12.5px;color:var(--blue)}
.cta-pill{background:var(--blue);color:#fff;font-size:12.5px;padding:7px 16px;border-radius:980px;
  transition:background .2s,transform .2s}
.cta-pill:hover{background:var(--blue-h);transform:translateY(-1px)}

/* ---------- hero ---------- */
body.home .hero{padding:92px 0 72px;overflow:hidden}
body.home .eyebrow{font-size:12.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
body.home .hero h1{font-size:76px;line-height:1.04;letter-spacing:-.045em;font-weight:600;margin:16px 0 20px;max-width:960px}
body.home .hero h1 em{font-style:normal;color:var(--blue)}
body.home .lede{font-size:20px;line-height:1.6;color:var(--muted);max-width:720px;letter-spacing:-.012em}
.hero-acts{display:flex;align-items:center;gap:24px;margin-top:32px;flex-wrap:wrap}
body.home .btn-primary{background:var(--blue);color:#fff;font-size:15px;padding:12px 26px;border-radius:980px;
  transition:background .2s,transform .2s,box-shadow .2s;display:inline-block}
body.home .btn-primary:hover{background:var(--blue-h);transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(0,113,227,.9)}
body.home .btn-text{font-size:15px;color:var(--blue);display:inline-flex;align-items:center;gap:6px}
body.home .btn-text:hover{text-decoration:underline}
.hero-trust{margin-top:26px;font-size:12.5px;color:var(--muted-2);display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.hero-trust i{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block}

/* hero window mock */
.win{margin-top:58px;border:1px solid var(--line-2);border-radius:22px;overflow:hidden;background:#fff;
  box-shadow:0 50px 90px -50px rgba(0,0,0,.45),0 2px 0 rgba(0,0,0,.02)}
.win-top{display:flex;align-items:center;gap:12px;padding:11px 16px;border-bottom:1px solid var(--line-2);background:#fbfbfd}
body.home .dots{display:flex;gap:6px}.dots i{width:9px;height:9px;border-radius:50%;background:#e0e0e4;display:block}
.win-url{font-size:11.5px;color:var(--muted-2)}
.win-tag{margin-left:auto;font-size:10.5px;color:var(--green);background:rgba(14,159,110,.1);
  padding:3px 10px;border-radius:980px;font-weight:500}
.win-body{display:grid;grid-template-columns:186px 1fr}
.win-side{border-right:1px solid var(--line-2);padding:16px 10px;background:#fbfbfd}
.ws-item{font-size:12.5px;color:var(--ink-2);padding:8px 12px;border-radius:9px;margin-bottom:2px;transition:background .2s}
.ws-item.on{background:var(--ink);color:#fff}
.win-main{padding:22px 26px 26px}
.wm-head{display:flex;align-items:flex-start}
.wm-t{font-size:15.5px;font-weight:600;letter-spacing:-.015em}
.wm-s{font-size:11.5px;color:var(--muted-2);margin-top:3px}
.wm-pill{margin-left:auto;font-size:11px;color:var(--green);background:rgba(14,159,110,.1);
  padding:3px 10px;border-radius:980px;height:fit-content}
.wm-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0 18px}
.wm-kpis span{display:block;font-size:11.5px;color:var(--muted-2)}
.wm-kpis b{display:block;font-size:23px;font-weight:600;letter-spacing:-.03em;margin-top:4px;
  font-variant-numeric:tabular-nums}
.wm-chart{display:flex;align-items:flex-end;gap:8px;height:104px;padding-bottom:8px;
  border-bottom:1px solid var(--line-2)}
.wm-chart span{flex:1;background:#e8e8ed;border-radius:4px 4px 0 0;height:0;transition:height .9s cubic-bezier(.2,.7,.2,1)}
.wm-chart span.hi{background:var(--blue)}
.wm-rows{margin-top:10px}
.wr{display:grid;grid-template-columns:150px 1fr 110px 84px;gap:14px;align-items:center;
  padding:9px 0;border-bottom:1px solid var(--line-2);font-size:12.5px}
.wr:last-child{border-bottom:none}
.wr-no{color:var(--muted-2);font-size:11.5px;font-variant-numeric:tabular-nums}
.wr-n{color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wr-a{text-align:right;font-variant-numeric:tabular-nums;font-weight:500}
.tag{font-size:10.5px;padding:2px 9px;border-radius:980px;text-align:center}
.tag.ok{color:var(--green);background:rgba(14,159,110,.1)}
.tag.warn{color:var(--amber);background:rgba(217,119,6,.1)}
.tag.bad{color:var(--red);background:rgba(224,36,36,.08)}
.tag.neutral{color:var(--muted);background:var(--alt)}

/* ---------- generic sections ---------- */
body.home .sect{padding:96px 0}
body.home .sect.alt{background:var(--alt)}
.sect-eyebrow{font-size:12.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.sect-h{font-size:44px;line-height:1.1;letter-spacing:-.035em;font-weight:600;max-width:860px}
.sect-p{font-size:18px;line-height:1.65;color:var(--muted);max-width:760px;margin-top:16px}
body.home .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
body.home .grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:48px}
body.home .card{border:1px solid var(--line-2);border-radius:var(--r);padding:26px 24px;background:#fff;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s,border-color .35s}
body.home .card:hover{transform:translateY(-4px);box-shadow:0 26px 50px -34px rgba(0,0,0,.4);border-color:var(--line)}
body.home .card .ic{width:40px;height:40px;border-radius:12px;background:var(--alt);display:grid;place-items:center;
  margin-bottom:16px;color:var(--ink-2)}
body.home .card .ic svg{width:20px;height:20px}
body.home .card.ai .ic svg{color:var(--blue)}
body.home .card h3{font-size:17px;margin:0 0 8px;letter-spacing:-.02em}
body.home .card p{font-size:13.5px;line-height:1.65;color:var(--muted);margin:0}
body.home .card .meta{margin-top:14px;font-size:11.5px;color:var(--muted-2);display:flex;gap:8px;align-items:center}
body.home .card.ai{background:linear-gradient(180deg,#fff,#fafcff);border-color:#dbe9fb}
body.home .card.ai .ic{background:#eaf3ff;color:var(--blue)}

/* stats strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px;
  border-top:1px solid var(--line-2);padding-top:30px}
.stats b{display:block;font-size:38px;font-weight:600;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.stats span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;line-height:1.5}

/* timeline */
.tl{margin-top:56px;position:relative}
.tl:before{content:"";position:absolute;left:15px;top:6px;bottom:6px;width:2px;background:var(--line-2)}
.tl-fill{position:absolute;left:15px;top:6px;width:2px;background:var(--blue);height:0;transition:height .2s linear}
.tl-row{position:relative;padding:0 0 26px 52px}
.tl-row:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:8px;top:4px;width:16px;height:16px;border-radius:50%;background:#fff;
  border:2px solid var(--line);transition:border-color .3s,background .3s}
.tl-row.on .tl-dot{border-color:var(--blue);background:var(--blue)}
.tl-row h4{margin:0 0 4px;font-size:16px;letter-spacing:-.02em}
.tl-row p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.6;max-width:620px}

/* compare table */
.cmp{margin-top:44px;border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden}
.cmp table{width:100%;border-collapse:collapse;font-size:13.5px}
.cmp th,.cmp td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
.cmp thead th{background:#fbfbfd;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.cmp td:first-child{color:var(--ink-2)}
.cmp .yes{color:var(--green);font-weight:600}
.cmp .no{color:var(--muted-2)}
.cmp tr:last-child td{border-bottom:none}

/* logos marquee */
.marq{margin-top:36px;overflow:hidden;position:relative;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marq-track{display:flex;gap:14px;width:max-content;animation:marq 26s linear infinite}
.marq:hover .marq-track{animation-play-state:paused}
.marq-item{border:1px solid var(--line-2);border-radius:14px;padding:14px 20px;font-size:13px;
  color:var(--ink-2);background:#fff;white-space:nowrap;display:flex;align-items:center;gap:8px}
.marq-item small{color:var(--muted-2);font-size:11px}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* pricing */
.price{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
.plan{border:1px solid var(--line-2);border-radius:var(--r);padding:28px 24px;background:#fff;display:flex;flex-direction:column}
.plan.hot{border-color:var(--blue);box-shadow:0 24px 60px -40px rgba(0,113,227,.9);position:relative}
.plan.hot:after{content:"最受欢迎";position:absolute;top:-11px;left:24px;background:var(--blue);color:#fff;
  font-size:11px;padding:3px 10px;border-radius:980px}
.plan h3{margin:0;font-size:17px}
.plan .p{font-size:34px;font-weight:600;letter-spacing:-.04em;margin:14px 0 4px}
.plan .p small{font-size:13px;color:var(--muted);font-weight:400;letter-spacing:0}
.plan ul{list-style:none;padding:0;margin:18px 0 0;font-size:13px;color:var(--ink-2);line-height:2}
.plan .btn-primary{margin-top:22px;text-align:center}

/* lead form */
.lead{margin-top:44px;border:1px solid var(--line-2);border-radius:24px;padding:34px;background:#fff;
  box-shadow:0 40px 80px -60px rgba(0,0,0,.5);display:grid;grid-template-columns:1.1fr .9fr;gap:34px}
.lead h3{margin:0 0 8px;font-size:26px;letter-spacing:-.03em}
.lead p{margin:0;font-size:14px;color:var(--muted);line-height:1.7}
.lead ul{list-style:none;padding:0;margin:18px 0 0;font-size:13px;color:var(--ink-2);line-height:2}
.lead ul li:before{content:"·";color:var(--blue);margin-right:8px;font-weight:700}
.frm{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.frm label{font-size:12px;color:var(--muted);display:block}
.frm input,.frm select{width:100%;margin-top:6px;border:1px solid var(--line);border-radius:11px;
  padding:11px 13px;font-size:14px;font-family:inherit;background:#fff;transition:border-color .2s,box-shadow .2s}
.frm input:focus,.frm select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(0,113,227,.12)}
.frm .full{grid-column:1/-1}
.frm .btn-primary{grid-column:1/-1;border:none;cursor:pointer;padding:13px;font-family:inherit}
.frm .hint{grid-column:1/-1;font-size:11.5px;color:var(--muted-2);line-height:1.6}

/* cta band */
body.home .band{background:var(--alt);padding:88px 0;text-align:center}
body.home .band h2{font-size:44px;letter-spacing:-.035em;margin:0 0 14px;font-weight:600}
body.home .band p{font-size:17px;color:var(--muted);margin:0 0 28px}

/* footer */
footer{background:#fff;border-top:1px solid var(--line-2);padding:64px 0 40px}
body.home .f-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.f-col h5{margin:0 0 12px;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2);font-weight:600}
.f-col a{display:block;font-size:13px;color:var(--ink-2);padding:5px 0;transition:color .2s}
.f-col a:hover{color:var(--blue)}
.f-foot{margin-top:44px;padding-top:22px;border-top:1px solid var(--line-2);display:flex;gap:18px;
  align-items:center;flex-wrap:wrap;font-size:12px;color:var(--muted-2)}
.f-foot .sp{flex:1}

/* reveal */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}
  .marq-track{animation:none}.wm-chart span{transition:none}}

@media (max-width:1024px){
  .hero h1{font-size:56px}
  .grid3,.grid4,.price{grid-template-columns:1fr 1fr}
  .win-body{grid-template-columns:1fr}
  .win-side{display:none}
  .f-grid{grid-template-columns:repeat(3,1fr)}
  .lead{grid-template-columns:1fr}
  .nav-links{display:none}
}
@media (max-width:680px){
  .wrap{padding:0 20px}
  .hero h1{font-size:38px;letter-spacing:-.03em}
  .lede{font-size:17px}
  .sect{padding:64px 0}
  .sect-h{font-size:30px}
  .grid3,.grid4,.price,.grid2,.stats{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
  .wm-kpis{grid-template-columns:1fr 1fr}
  .frm{grid-template-columns:1fr}
  .band h2{font-size:30px}
}

/* 四档定价 + 省钱计算器 */
.price4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.price4 .plan{padding:24px 20px}
.price4 .plan .fit{font-size:11.5px;color:var(--muted-2);letter-spacing:.01em;margin-bottom:10px;line-height:1.5}
.price4 .plan h3{font-size:16.5px}
.price4 .plan .save{margin-top:12px;font-size:13px;color:var(--ink);line-height:1.4}
.price4 .plan .save b{font-size:22px;font-weight:600;letter-spacing:-.03em;color:var(--green)}
.price4 .plan .save span{color:var(--muted);font-size:11.5px}
.price4 .plan .pr{margin-top:10px;font-size:20px;font-weight:600;letter-spacing:-.03em}
.price4 .plan .pr small{font-size:11.5px;color:var(--muted);font-weight:400;letter-spacing:0}
.price4 .plan ul{margin-top:14px;font-size:12.5px;line-height:1.9}
.price4 .plan .where{margin-top:12px;font-size:11.5px;color:var(--muted);line-height:1.6;
  border-top:1px dashed var(--line-2);padding-top:10px}
.price4 .plan .btn-primary{margin-top:auto;padding:11px 18px;font-size:13.5px;text-align:center}
.price4 .plan.hot:after{left:20px}

.calc{margin-top:26px;border:1px solid var(--line-2);border-radius:24px;padding:30px;background:#fff;
  display:grid;grid-template-columns:1fr 1fr;gap:34px;box-shadow:0 40px 80px -64px rgba(0,0,0,.5)}
.calc h3{margin:0 0 8px;font-size:24px;letter-spacing:-.03em}
.calc p{margin:0 0 18px;font-size:13.5px;color:var(--muted);line-height:1.7}
.calc label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:18px}
.calc label b{color:var(--ink);font-size:14px;margin-left:8px;font-variant-numeric:tabular-nums}
.calc input[type=range]{width:100%;margin-top:10px;-webkit-appearance:none;height:4px;border-radius:4px;
  background-color:var(--line-2);
  background-image:linear-gradient(to right,var(--blue) 0,var(--blue) var(--fill,0%),var(--line-2) var(--fill,0%),var(--line-2) 100%);
  background-repeat:no-repeat;
  outline:none;transition:background .06s linear;cursor:pointer}
.calc input[type=range]::-moz-range-track{height:4px;border-radius:4px;background:var(--line-2)}
.calc input[type=range]::-moz-range-progress{height:4px;border-radius:4px;background:var(--blue)}
.calc input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:0 2px 8px rgba(0,0,0,.18);cursor:pointer}
.calc-stops{font-size:11px;color:var(--muted-2);margin:-6px 0 10px;letter-spacing:.01em;line-height:1.6}
.calc-note{font-size:11px;color:var(--muted-2);line-height:1.6}
.calc-r{background:var(--alt);border-radius:18px;padding:22px}
.cr-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-2);
  padding:8px 0;border-bottom:1px solid var(--line-2)}
.cr-row:last-of-type{border-bottom:none}
.cr-row b{font-variant-numeric:tabular-nums;font-weight:600}
.cr-row.big{margin:6px 0;padding:12px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cr-row.big span{font-size:14px;font-weight:600;color:var(--ink)}
.cr-row.big b{font-size:26px;letter-spacing:-.03em;color:var(--green)}
.calc-r .btn-primary{display:block;text-align:center;margin-top:16px;padding:12px;font-size:14px}

@media (max-width:1024px){
  .price4{grid-template-columns:1fr 1fr}
  .calc{grid-template-columns:1fr;gap:20px}
}
@media (max-width:680px){
  .price4{grid-template-columns:1fr}
}

.price4 .plan .plan-art{color:#c7c7cc;margin:-4px 0 14px;height:64px;display:flex;align-items:flex-end}
.price4 .plan.hot .plan-art{color:#7fb2ea}
.price4 .plan .plan-art svg{width:112px;height:70px}
.price4 .plan .save b{font-size:24px}
.price4 .plan .pr{font-size:16px;margin-top:6px;color:var(--ink-2)}

.price4 .plan ul{list-style:none;padding:0;margin:14px 0 0;font-size:12px;line-height:1.65;color:var(--ink-2)}
.price4 .plan ul li{display:flex;gap:7px;padding:4px 0;align-items:flex-start}
.price4 .plan ul li i{font-style:normal;color:var(--green);font-weight:700;flex:0 0 12px;line-height:1.5}
.price4 .plan ul li.off{color:var(--muted-2)}
.price4 .plan ul li.off i{color:var(--line)}
.price4 .plan .who{margin-top:12px;font-size:11.5px;color:var(--muted);line-height:1.6;
  border-top:1px dashed var(--line-2);padding-top:10px}
.price4 .plan h3 .badge{display:inline-block;font-size:10.5px;font-weight:600;color:var(--blue);
  background:#eaf3ff;padding:2px 8px;border-radius:980px;margin-left:6px;vertical-align:2px;letter-spacing:0}
.price4 .plan ul{margin-top:12px}

/* 内采网络 */
.net-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:42px}
.net-card{border:1px solid var(--line-2);border-radius:var(--r);padding:26px 22px;background:#fff}
.net-cat{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2)}
.net-num{margin:12px 0 10px;display:flex;align-items:baseline;gap:8px}
.net-num b{font-size:34px;font-weight:600;letter-spacing:-.04em;color:var(--green)}
.net-num span{font-size:11.5px;color:var(--muted)}
.net-card p{margin:0;font-size:13px;color:var(--muted);line-height:1.7}
.net-flow{display:flex;align-items:stretch;gap:10px;margin-top:34px;border:1px solid var(--line-2);
  border-radius:var(--r);padding:20px;background:#fff;flex-wrap:wrap}
.nf-step{flex:1 1 180px;display:flex;flex-direction:column;gap:4px}
.nf-step i{font-style:normal;width:22px;height:22px;border-radius:50%;background:var(--alt);color:var(--blue);
  font-size:11.5px;font-weight:600;display:grid;place-items:center;margin-bottom:6px}
.nf-step b{font-size:14px}
.nf-step span{font-size:12px;color:var(--muted);line-height:1.6}
.nf-arrow{color:var(--line);align-self:center;font-size:15px}
.net-note{margin-top:16px;font-size:11.5px;color:var(--muted-2);line-height:1.7}
@media (max-width:1024px){.net-grid{grid-template-columns:1fr}.nf-arrow{display:none}}

/* 法务页 */
.legal{max-width:760px;margin:0 auto;padding:80px 32px 100px}
.legal h1{font-size:38px;letter-spacing:-.03em;margin:0 0 8px}
.legal .upd{font-size:12.5px;color:var(--muted-2);margin-bottom:32px}
.legal h2{font-size:17px;margin:32px 0 8px;letter-spacing:-.01em}
.legal p,.legal li{font-size:14px;line-height:1.85;color:var(--ink-2)}
.legal ul{padding-left:20px}
.legal a.back{font-size:13px;color:var(--blue);display:inline-block;margin-bottom:24px}

/* 有下拉的菜单项：加向下箭头，并给 hover 反馈 */
.nav-links > div:has(.mega) > a.top::after{
  content:"";width:5px;height:5px;margin-left:6px;border-right:1.2px solid currentColor;
  border-bottom:1.2px solid currentColor;transform:rotate(45deg) translateY(-1px);opacity:.55;
  transition:transform .22s ease,opacity .22s ease;display:inline-block}
.nav-links > div:has(.mega):hover > a.top::after{transform:rotate(225deg) translateY(-1px);opacity:.9}
.nav-links > div:has(.mega) > a.top{padding-right:2px}
@media(max-width:1180px){
  .nav-links a.top[data-opt="low"]{display:none}
}

/* 三列产品菜单 */
.mega.mega3{display:grid;grid-template-columns:repeat(3,minmax(200px,1fr));gap:22px 26px;padding:22px 24px;
  min-width:760px;left:-10px}
.mega.mega3 .col{display:flex;flex-direction:column;gap:2px}
.mega.mega3 .col .grp{grid-column:auto}
.mega.mega3 .col a{display:block}
@media(max-width:1240px){ .mega.mega3{min-width:640px;grid-template-columns:repeat(2,1fr)} }