:root{
  --bg:#FBFAF7; --paper:#FFFFFF; --ink:#22303A; --ink2:#57666F; --ink3:#8A959C;
  --line:#E9E3D7; --line2:#F1ECE1;
  --gold:#A98544; --gold-deep:#8A6B33; --gold-soft:#F4EDDF; --celadon:#5F7B72; --celadon-soft:#EEF3F1;
  --warn:#A5503C;
  --fs-body:16px; --fs-sm:14px; --fs-xs:12.5px;
  --h1:clamp(30px,6vw,46px); --h2:clamp(24px,4.4vw,34px); --h3:clamp(18px,3vw,22px);
  --w:1120px; --pad:clamp(18px,4vw,40px);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif;
  --sans:-apple-system,BlinkMacSystemFont,'PingFang SC','HarmonyOS Sans SC','MiSans','HONOR Sans CN','ColorOS','SamsungSans','Segoe UI','Microsoft YaHei',sans-serif;
  --mono:ui-monospace,'SF Mono',Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:var(--fs-body);
  line-height:1.85;letter-spacing:.02em;overflow-wrap:break-word;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--gold-deep);text-decoration:none}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:2px}
.wrap{max-width:var(--w);margin:0 auto;padding:0 var(--pad)}
/* ── 头部 ── */
.hd{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.92);backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line2)}
.hd .in{max-width:var(--w);margin:0 auto;padding:12px var(--pad);display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:9px;color:var(--ink);min-width:0}
.brand b{font-family:var(--serif);font-size:16.5px;letter-spacing:.04em;font-weight:700;white-space:nowrap}
.brand small{display:block;font-size:10.5px;color:var(--ink3);letter-spacing:.16em;font-weight:400}
@media(max-width:479px){.brand small{display:none}}
.nav{display:none;gap:26px}
.nav a{color:var(--ink2);font-size:14.5px;position:relative;padding:4px 0}
.nav a.on{color:var(--ink);font-weight:600}
.nav a.on::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--gold)}
.hd-cta{display:flex;gap:10px;align-items:center;flex:0 0 auto}
.hd-cta .btn{white-space:nowrap;padding:9px 14px;font-size:13.5px}
@media(max-width:389px){.hd-cta .btn{padding:9px 11px;font-size:12.5px}}
.menu-btn{display:block;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);margin:4px 0}
.drawer{display:none;position:fixed;inset:auto 0 0 0;top:57px;background:var(--paper);border-top:1px solid var(--line);
  padding:12px var(--pad) calc(20px + env(safe-area-inset-bottom));z-index:49;box-shadow:0 12px 30px rgba(34,48,56,.12)}
.drawer a{display:block;padding:13px 6px;border-bottom:1px solid var(--line2);color:var(--ink);font-size:16px}
.drawer.open{display:block}
@media(min-width:901px){.nav{display:flex}.menu-btn{display:none}.drawer{display:none!important}}
/* ── 按钮 ── */
.btn{display:inline-block;padding:12px 26px;border-radius:10px;font-size:15.5px;font-weight:600;letter-spacing:.04em;
  border:1px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;text-align:center}
.btn-gold{background:linear-gradient(135deg,#B08D57,#9A7638);color:#fff;box-shadow:0 4px 14px rgba(154,118,56,.25)}
.btn-line{border-color:var(--line);color:var(--ink);background:var(--paper)}
.btn-block{display:block;width:100%}
@media(hover:hover){.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(154,118,56,.28)}}
/* ── Hero ── */
.hero{padding:clamp(48px,9vw,96px) 0 clamp(40px,7vw,72px);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-120px;right:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,var(--gold-soft),transparent 65%);opacity:.8;pointer-events:none}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.22em;color:var(--gold-deep);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;background:var(--paper)}
.hero h1{font-family:var(--serif);font-size:var(--h1);line-height:1.42;letter-spacing:.03em;margin:22px 0 8px;font-weight:700}
.hero h1 em{font-style:normal;color:var(--gold-deep);border-bottom:3px solid var(--gold-soft)}
.hero .lead{color:var(--ink2);font-size:clamp(15.5px,2.4vw,18px);max-width:620px;margin-top:14px}
.hero .answer{margin-top:26px;background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:12px;padding:16px 18px;font-size:14.5px;color:var(--ink2);max-width:640px}
.hero .answer b{color:var(--ink)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.seal{position:absolute;right:clamp(8px,6vw,80px);top:clamp(30px,7vw,70px);width:clamp(74px,10vw,120px);opacity:.9}
/* ── Section ── */
.sec{padding:clamp(44px,7vw,84px) 0}
.sec-alt{background:var(--paper);border-top:1px solid var(--line2);border-bottom:1px solid var(--line2)}
.sec-head{max-width:640px;margin-bottom:clamp(24px,4vw,44px)}
.sec-head .tag{font-size:12.5px;letter-spacing:.24em;color:var(--gold-deep);font-weight:600}
.sec-head h2{font-family:var(--serif);font-size:var(--h2);letter-spacing:.03em;line-height:1.4;margin:10px 0 8px}
.sec-head p{color:var(--ink2);font-size:15.5px}
/* ── 卡片 ── */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:1fr}
.g3{grid-template-columns:1fr}
@media(min-width:721px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:clamp(20px,3vw,28px);
  transition:transform .2s ease,box-shadow .2s ease}
.card h3{font-family:var(--serif);font-size:var(--h3);margin-bottom:8px;letter-spacing:.02em}
.card p{color:var(--ink2);font-size:14.5px}
.card .no{font-family:var(--mono);font-size:12.3px;color:var(--gold);letter-spacing:.1em}
@media(hover:hover){.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(34,48,56,.08)}}
/* ── 行业卡 ── */
.ind{border-top:3px solid var(--gold-soft)}
.ind h3{display:flex;align-items:baseline;gap:10px}
.ind .en{font-size:12.3px;color:var(--ink3);letter-spacing:.14em;font-family:var(--mono)}
.ind .row{display:flex;gap:8px;margin-top:12px;font-size:13.5px}
.ind .row b{color:var(--celadon);font-weight:600;flex:0 0 4.5em;font-size:12.5px;letter-spacing:.1em}
.ind .row p{color:var(--ink2)}
.ind .rule{margin-top:12px;font-size:12.5px;color:var(--warn);background:#FBF3F0;border-radius:8px;padding:6px 10px;display:inline-block}
/* ── FAQ ── */
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:600;font-size:15.5px;list-style:none;position:relative;padding-right:40px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--gold);font-size:20px;font-weight:300}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 18px 16px;color:var(--ink2);font-size:14.5px;border-top:1px dashed var(--line2);padding-top:12px;margin:0 0 0}
/* ── 数据带 ── */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
@media(min-width:721px){.stats{grid-template-columns:repeat(4,1fr)}}
.stats div{background:var(--paper);padding:22px 16px;text-align:center}
.stats b{display:block;font-family:var(--serif);font-size:clamp(24px,4vw,32px);color:var(--gold-deep)}
.stats span{font-size:12.5px;color:var(--ink3);letter-spacing:.08em}
/* ── 页脚 ── */
.ft{border-top:1px solid var(--line);background:var(--paper);margin-top:20px}
.ft .in{max-width:var(--w);margin:0 auto;padding:36px var(--pad) calc(28px + env(safe-area-inset-bottom))}
.ft-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:721px){.ft-grid{grid-template-columns:1.4fr 1fr 1fr}}
.ft h4{font-size:13px;letter-spacing:.16em;color:var(--ink3);margin-bottom:10px;font-weight:600}
.ft p,.ft a{font-size:13.5px;color:var(--ink2);line-height:2}
.ft .legal-line{border-top:1px dashed var(--line);margin-top:22px;padding-top:16px;font-size:12.5px;color:var(--ink3);display:flex;flex-wrap:wrap;gap:8px 18px}
/* ── 具身客服 ── */
.xd-fab{position:fixed;right:calc(14px + env(safe-area-inset-right));bottom:calc(14px + env(safe-area-inset-bottom));z-index:80;
  width:58px;height:58px;border-radius:50%;border:none;cursor:pointer;background:var(--paper);
  box-shadow:0 6px 24px rgba(34,48,56,.18),0 0 0 1px var(--line);padding:0;overflow:visible}
.xd-fab svg{width:100%;height:100%}
.xd-fab .breath{transform-origin:center 42%;animation:breath 3.6s ease-in-out infinite}
.xd-fab{box-shadow:0 6px 26px rgba(34,211,238,.22),0 0 0 1px rgba(225,29,143,.4),0 0 18px rgba(129,140,248,.18)}
@media(hover:hover){.xd-fab:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(34,211,238,.35),0 0 0 1px rgba(225,29,143,.55)}}
.ringA{transform-origin:32px 32px;animation:xdspin 9s linear infinite}
.ringB{transform-origin:32px 32px;animation:xdspinR 13s linear infinite}
.visorGlow{animation:xgvisor 2.6s ease-in-out infinite}
.hairF{transform-origin:32px 34px;animation:xdfloat 3.4s ease-in-out infinite}
@keyframes xdspin{to{transform:rotate(360deg)}}
@keyframes xdspinR{to{transform:rotate(-360deg)}}
@keyframes xgvisor{0%,100%{opacity:.95}50%{opacity:.55}}
@keyframes xdfloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-1.3px)}}
@keyframes breath{0%,100%{transform:scale(1)}50%{transform:scale(1.035)}}
.xd-tip{position:fixed;right:calc(84px + env(safe-area-inset-right));bottom:calc(24px + env(safe-area-inset-bottom));z-index:80;
  background:var(--ink);color:#fff;font-size:12.5px;padding:8px 12px;border-radius:10px 10px 2px 10px;opacity:0;transition:opacity .4s;pointer-events:none}
.xd-tip.show{opacity:1}
.xd-panel{position:fixed;z-index:81;inset:auto 10px 10px 10px;top:auto;background:var(--bg);border:1px solid var(--line);
  border-radius:18px;box-shadow:0 24px 60px rgba(34,48,56,.25);display:none;flex-direction:column;
  max-height:min(72vh,560px);overflow:hidden}
.xd-panel.open{display:flex}
@media(min-width:721px){.xd-panel{right:24px;left:auto;bottom:88px;width:380px;max-height:600px}}
.xd-hd{display:flex;align-items:center;gap:10px;padding:12px 14px;background:linear-gradient(135deg,#2C3A44,#22303A);color:#fff}
.xd-hd .ava{width:38px;height:38px;border-radius:50%;background:var(--gold-soft);flex:0 0 38px;overflow:hidden}
.xd-hd b{font-size:14.5px;display:block}
.xd-hd small{font-size:12px;color:#C9B98F;letter-spacing:.06em}
.xd-fs{margin-left:auto;color:#D8C9A0;display:flex;align-items:center;padding:4px}
.xd-fs:hover{color:#fff}
.xd-close{margin-left:2px;background:none;border:none;color:#fff;font-size:22px;cursor:pointer;line-height:1;padding:4px}
.xd-body{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;-webkit-overflow-scrolling:touch}
.msg{max-width:86%;padding:10px 13px;border-radius:14px;font-size:14px;line-height:1.7}
.msg.bot{background:var(--paper);border:1px solid var(--line);border-bottom-left-radius:4px;align-self:flex-start;color:var(--ink)}
.msg.me{background:linear-gradient(135deg,#B08D57,#9A7638);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
.msg.typing i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ink3);margin:0 1.5px;animation:tp 1.2s infinite}
.msg.typing i:nth-child(2){animation-delay:.2s}.msg.typing i:nth-child(3){animation-delay:.4s}
@keyframes tp{0%,60%,100%{transform:translateY(0);opacity:.5}30%{transform:translateY(-4px);opacity:1}}
.chips{display:flex;gap:8px;flex-wrap:wrap;padding:0 14px 10px}
.chip{border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:6px 12px;font-size:12.5px;cursor:pointer;color:var(--ink2)}
.chip:active{background:var(--gold-soft)}
.xd-in{display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--paper);border-top:1px solid var(--line2)}
.xd-in input{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;font-family:var(--sans);background:var(--bg);color:var(--ink)}
.xd-in button{border:none;border-radius:10px;background:linear-gradient(135deg,#B08D57,#9A7638);color:#fff;padding:0 18px;font-weight:600;cursor:pointer}
/* ── 动效 ── */
.rv{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.breath{animation:none}.msg.typing i{animation:none}.ringA,.ringB,.visorGlow,.hairF{animation:none}}
@media print{.xd-fab,.xd-panel,.xd-tip,.hd-cta,.drawer{display:none!important}}