:root{
  --ink:#0E1116;
  --ink-2:#4B5563;
  --ink-3:#8A9199;
  --line:#E4E7EC;
  --line-2:#D3D8DF;
  --paper:#FFFFFF;
  --wash:#F5F6F8;
  --wash-2:#EDEFF2;
  --accent:#FF6A00;
  --accent-2:#E85F00;
  --accent-soft:#FFF1E6;
  --green:#00A844;
  --green-soft:#E8F7EE;
  --dark:#0E1116;
  --dark-2:#171B21;
  --wrap:1200px;
  --r:14px;
  --r-sm:8px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  font-size:15.5px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media(max-width:720px){.wrap{padding:0 20px}}

/* ---------- top bar ---------- */
.topbar{background:var(--dark);color:#B9C0CA;font-size:12.5px;letter-spacing:.02em}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.topbar b{color:#fff;font-weight:500}
.topbar .t-right{display:flex;gap:18px;align-items:center}
.topbar a{color:#fff;border-bottom:1px solid rgba(255,255,255,.3)}
@media(max-width:720px){.topbar .t-right span{display:none}}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:36px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand .mark{width:34px;height:34px;background:var(--accent);border-radius:9px;display:flex;align-items:center;justify-content:center;flex:none}
.brand .mark svg{display:block}
.brand .bt{line-height:1.15}
.brand .bt b{display:block;font-size:18px;font-weight:700;letter-spacing:.02em}
.brand .bt span{display:block;font-size:10.5px;color:var(--ink-3);letter-spacing:.14em}
.menu{display:flex;gap:24px;margin-left:auto;font-size:14.5px}
.menu a{position:relative;padding:6px 0;color:var(--ink-2)}
.menu a:hover{color:var(--ink)}
.menu a[aria-current="page"]{color:var(--ink);font-weight:600}
.menu a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent)}
.hdr .act{display:flex;align-items:center;gap:10px;margin-left:8px}
@media(max-width:1180px){.menu{gap:16px;font-size:14px}.hdr .wrap{gap:20px}}
@media(max-width:1040px){.menu{display:none}}
@media(max-width:720px){
  .hdr .wrap{height:62px;gap:12px}
  .brand .bt span{display:none}
  .hdr .act .btn--line{display:none}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;border:1px solid transparent;transition:.15s;white-space:nowrap;cursor:pointer}
.btn--solid{background:var(--accent);color:#fff}
.btn--solid:hover{background:var(--accent-2);color:#fff}
.btn--line{background:#fff;border-color:var(--line-2);color:var(--ink)}
.btn--line:hover{border-color:var(--ink);color:var(--ink)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:#000;color:#fff}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--onDark{background:#fff;color:var(--ink)}
.btn--onDark:hover{background:#fff;color:var(--accent-2)}

/* ---------- type ---------- */
.kicker{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--accent);margin:0 0 18px}
.kicker::before{content:"";width:24px;height:2px;background:var(--accent);flex:none}
.kicker--onDark{color:#FFA96B}
.kicker--onDark::before{background:#FFA96B}
h1,.h1{font-size:clamp(30px,4.4vw,52px);line-height:1.16;letter-spacing:-1.2px;font-weight:800;margin:0 0 22px}
h2,.h2{font-size:clamp(23px,2.6vw,34px);line-height:1.28;letter-spacing:-.6px;font-weight:800;margin:0 0 14px}
h3{font-size:17px;font-weight:700;margin:0 0 8px;letter-spacing:-.1px}
.lead{font-size:16.5px;color:var(--ink-2);margin:0 0 26px;max-width:640px}
.sec-sub{color:var(--ink-2);font-size:16px;margin:0;max-width:720px}
.mono{font-variant-numeric:tabular-nums}
.accent{color:var(--accent-2)}

/* ---------- hero ---------- */
.hero{position:relative;border-bottom:1px solid var(--line);overflow:hidden;background:var(--paper)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(var(--line-2) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
  mask-image:linear-gradient(120deg,#000 0%,transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,#000 0%,transparent 62%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  border:1px solid var(--line-2);transform:rotate(45deg);pointer-events:none;
}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.06fr .94fr;gap:64px;align-items:center;padding-top:84px;padding-bottom:84px}
.hero h1 em{font-style:normal;color:var(--accent-2)}
.hero .acts{display:flex;gap:12px;flex-wrap:wrap}
.hero .note{margin-top:22px;font-size:13px;color:var(--ink-3)}
@media(max-width:980px){
  .hero .wrap{grid-template-columns:1fr;gap:40px;padding-top:52px;padding-bottom:52px}
  .hero::after{display:none}
}

/* ---------- hero data panel ---------- */
.panel{border:1px solid var(--line);background:#fff}
.panel__hd{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line);font-size:12px;letter-spacing:.1em;color:var(--ink-3)}
.panel__hd b{color:var(--ink);font-weight:600;letter-spacing:0}
.panel__grid{display:grid;grid-template-columns:1fr 1fr}
.tile{padding:24px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.tile:nth-child(2n){border-right:none}
.tile:nth-last-child(-n+2){border-bottom:none}
.tile--wide{grid-column:1/-1;border-right:none}
.tile b{display:block;font-size:32px;line-height:1.1;font-weight:800;letter-spacing:-1.4px}
.tile b i{font-style:normal;font-size:15px;font-weight:600;margin-left:2px;letter-spacing:0}
.tile span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:6px;line-height:1.5}
.tile--accent{background:var(--accent);color:#fff}
.tile--accent b,.tile--accent span{color:#fff}
.tile--accent span{opacity:.85}

/* ---------- section ---------- */
.sec{padding:88px 0;border-bottom:1px solid var(--line)}
.sec:last-of-type{border-bottom:none}
.sec--wash{background:var(--wash)}
.sec--dark{background:var(--dark);color:#fff;border-bottom:none}
.sec--dark h2,.sec--dark h3{color:#fff}
.sec--dark .sec-sub{color:#B9C0CA}
.sec--tight{padding:56px 0}
.sec-hd{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:44px;flex-wrap:wrap}
@media(max-width:720px){.sec{padding:56px 0}.sec-hd{margin-bottom:30px}}

/* ---------- hairline grid ---------- */
.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.cell{background:#fff;padding:30px 26px}
.cell h3{display:flex;align-items:center;gap:10px}
.cell p{margin:6px 0 0;font-size:14.5px;color:var(--ink-2)}
.cell .num{font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.1em;margin-bottom:14px;display:block}
@media(max-width:980px){.grid--3,.grid--4{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.grid--3,.grid--4,.grid--2{grid-template-columns:1fr}}

/* ---------- icon ---------- */
.ico{width:38px;height:38px;border-radius:9px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;flex:none}
.ico svg{width:20px;height:20px;stroke:var(--accent-2);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ico--green{background:var(--green-soft)}
.ico--green svg{stroke:#00803A}
.ico--dark{background:var(--wash-2)}
.ico--dark svg{stroke:var(--ink)}

/* ---------- stat band ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stat{background:#fff;padding:28px 24px}
.stat b{display:block;font-size:34px;line-height:1.1;font-weight:800;letter-spacing:-1.4px}
.stat b i{font-style:normal;font-size:15px;font-weight:600;margin-left:3px;letter-spacing:0}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--ink-3);line-height:1.6}
@media(max-width:860px){.stats{grid-template-columns:1fr 1fr}}

/* ---------- logo wall ---------- */
.logos{display:flex;flex-wrap:wrap;gap:10px}
.logos span{border:1px solid var(--line);border-radius:999px;padding:9px 18px;font-size:14px;color:var(--ink-2);background:#fff}
.sec--wash .logos span{background:#fff}

/* ---------- table ---------- */
.tbl{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.tbl-scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:600px;font-size:14.5px}
th{background:var(--wash);text-align:left;padding:14px 20px;font-size:12.5px;letter-spacing:.06em;color:var(--ink-2);font-weight:600;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:15px 20px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2);line-height:1.7}
td:first-child{color:var(--ink);font-weight:600}
tr:last-child td{border-bottom:none}

/* ---------- answer box ---------- */
.answer{border-left:3px solid var(--accent);background:var(--wash);padding:24px 28px;margin:0 0 32px;font-size:16px;color:var(--ink-2);line-height:1.85}
.answer strong{color:var(--ink);font-weight:700}
.sec--wash .answer{background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent)}
.updated{font-size:12.5px;color:var(--ink-3);margin:0 0 26px;letter-spacing:.02em}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.step{background:#fff;padding:26px 22px}
.step .n{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.12em;margin-bottom:12px;display:block}
.step h3{font-size:15.5px}
.step p{margin:6px 0 0;font-size:13.5px;color:var(--ink-3);line-height:1.65}
@media(max-width:980px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.steps{grid-template-columns:1fr}}

/* ---------- case ---------- */
.cases{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.case{border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden}
.case__top{padding:24px 26px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.case__tag{font-size:11.5px;letter-spacing:.08em;color:var(--green);background:var(--green-soft);border-radius:999px;padding:4px 11px;white-space:nowrap}
.case__metric{padding:22px 26px;display:flex;gap:24px;align-items:baseline;border-bottom:1px solid var(--line)}
.case__metric b{font-size:36px;font-weight:800;letter-spacing:-1.6px;line-height:1}
.case__metric b i{font-style:normal;font-size:14px;font-weight:600;margin-left:3px;letter-spacing:0}
.case__metric span{font-size:12.5px;color:var(--ink-3)}
.case__body{padding:20px 26px 26px;font-size:14.5px;color:var(--ink-2);margin:0}
@media(max-width:860px){.cases{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);background:transparent}
.faq summary{list-style:none;cursor:pointer;display:flex;gap:20px;align-items:flex-start;padding:22px 0;font-size:16.5px;font-weight:600;letter-spacing:-.1px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{color:var(--accent);font-weight:700;font-size:13px;letter-spacing:.08em;padding-top:4px;flex:none}
.faq summary .plus{margin-left:auto;flex:none;width:20px;height:20px;position:relative;margin-top:3px}
.faq summary .plus::before,.faq summary .plus::after{content:"";position:absolute;background:var(--ink-3);border-radius:1px}
.faq summary .plus::before{left:0;top:9px;width:20px;height:2px}
.faq summary .plus::after{left:9px;top:0;width:2px;height:20px}
.faq details[open] summary .plus::after{display:none}
.faq details[open] summary{color:var(--accent-2)}
.faq .a{padding:0 0 26px 44px;color:var(--ink-2);font-size:15px;max-width:940px}
.faq .a p{margin:0 0 12px}
.faq .a p:last-child{margin-bottom:0}
.faq .a strong{color:var(--ink)}

/* ---------- cta band ---------- */
.cta{background:var(--dark);color:#fff;padding:72px 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:-60px;bottom:-120px;width:280px;height:280px;border:1px solid rgba(255,255,255,.14);transform:rotate(45deg)}
.cta::after{content:"";position:absolute;left:0;top:0;width:6px;height:100%;background:var(--accent)}
.cta .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.cta h2{color:#fff;margin-bottom:12px}
.cta p{color:#B9C0CA;margin:0 0 6px;font-size:15.5px}
.cta .box{border:1px solid rgba(255,255,255,.16);padding:24px}
.cta .box dl{display:grid;grid-template-columns:auto 1fr;gap:12px 18px;margin:0;font-size:14px}
.cta .box dt{color:#8A9199}
.cta .box dd{margin:0;color:#fff;font-weight:600}
@media(max-width:860px){.cta .wrap{grid-template-columns:1fr;gap:28px}}

/* ---------- footer ---------- */
.ftr{background:#fff;padding:64px 0 28px;border-top:1px solid var(--line)}
.ftr-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.ftr h4{font-size:13px;letter-spacing:.1em;color:var(--ink-3);margin:0 0 16px;font-weight:600}
.ftr ul{list-style:none;margin:0;padding:0}
.ftr li{margin-bottom:10px}
.ftr a{font-size:14px;color:var(--ink-2)}
.ftr a:hover{color:var(--accent-2)}
.ftr address{font-style:normal;font-size:13.5px;color:var(--ink-2);line-height:1.9;margin-top:14px;max-width:340px}
.ftr-btm{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3)}
/* 页脚备案号链接：跟同一行文字同字号，避免 .ftr a 的 14px 覆盖 */
.ftr-btm a{font-size:12.5px;color:var(--ink-3)}
.ftr-btm a:hover{color:var(--accent-2)}
@media(max-width:860px){.ftr-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:560px){.ftr-grid{grid-template-columns:1fr}}

/* ---------- breadcrumb ---------- */
.crumb{font-size:12.5px;color:var(--ink-3);padding-top:22px;letter-spacing:.02em}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--accent-2)}
.crumb span{color:var(--ink-2)}

/* ---------- page head ---------- */
.phead{padding:26px 0 52px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.phead::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--line-2) 1px,transparent 1px);background-size:26px 26px;opacity:.4;mask-image:linear-gradient(90deg,#000,transparent 55%);-webkit-mask-image:linear-gradient(90deg,#000,transparent 55%);pointer-events:none}
.phead .wrap{position:relative;z-index:1}
.phead h1{font-size:clamp(28px,3.6vw,44px);max-width:900px}
.phead .lead{margin-bottom:0}

/* ---------- misc ---------- */
.inline-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;border:1px solid var(--line);border-left:3px solid var(--accent);background:#fff;border-radius:var(--r);padding:22px 26px;margin-top:32px}
.inline-cta p{margin:0;font-size:15px}
.inline-cta strong{font-weight:700}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:860px){.two{grid-template-columns:1fr}}

/* ---------- article ---------- */
.article{max-width:800px}
.article h2{font-size:clamp(21px,2.2vw,27px);margin:48px 0 16px;letter-spacing:-.4px}
.article h2:first-child{margin-top:0}
.article h3{font-size:18.5px;margin:34px 0 12px}
.article p{margin:0 0 18px}
.article ul,.article ol{margin:0 0 20px;padding-left:22px}
.article li{margin-bottom:9px}
.article strong{font-weight:700;color:var(--ink)}
.article blockquote{margin:24px 0;padding:18px 24px;background:var(--wash);border-left:3px solid var(--accent);color:var(--ink-2)}
.article blockquote p:last-child{margin-bottom:0}
.article .facts{background:var(--wash);border:1px solid var(--line);border-radius:var(--r);padding:24px 28px;margin:36px 0 0}
.article .facts h3{margin:0 0 12px;font-size:16px}
.article .facts ul{list-style:none;padding:0;margin:0;font-size:14px;color:var(--ink-2)}
.article .facts li{margin-bottom:7px}
.article .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3);margin:0 0 26px}
.article .meta span{display:inline-flex;align-items:center;gap:6px}
.related{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
@media(max-width:760px){.related{grid-template-columns:1fr}}
.related a{display:block;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;background:#fff;transition:.15s}
.related a:hover{border-color:var(--line-2);background:var(--wash)}
.related b{display:block;font-size:15px;margin-bottom:6px}
.related span{font-size:13px;color:var(--ink-3)}