/* ==========================================================================
   昊天实业官网 · 样式表
   近白纸面 + 工程橙 + 石墨黑 / 思源黑体栈
   ========================================================================== */

:root{
  --ink:#17191B;          /* 石墨黑，偏冷，比纯黑柔和 */
  --ink-2:#1F2225;
  --ink-3:#2B2F33;
  --paper:#FAFAF8;        /* 页面底：近白中性，干净透亮 */
  --paper-2:#F0F0ED;      /* 次级底，纯净中性灰 */
  --amber:#CE5D12;        /* 品牌工程橙：提正提亮，精神 */
  --amber-l:#F09A56;      /* 深底上的橙（提亮够对比） */
  --amber-d:#A34708;      /* 浅底上的橙字 */
  --steel:#8A8D92;       /* 深底上的次要字 */
  --steel-d:#64676C;     /* 浅底上的小标签（对比度>=4.5:1） */
  --muted:#5F6165;
  --white:#FFFFFF;
  --line:rgba(23,25,27,.13);
  --line-w:rgba(255,255,255,.12);
  --line-d:rgba(23,25,27,.085);
  --ease:cubic-bezier(.16,1,.3,1);
  --max:1360px;
  --pad:6vw;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
::selection{background:var(--amber);color:#fff}
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:#EFEFED}
::-webkit-scrollbar-thumb{background:#C7C7C4;border-radius:9px}
::-webkit-scrollbar-thumb:hover{background:var(--amber)}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.en{font-family:Impact,"Haettenschweiler","Arial Narrow Bold",sans-serif;letter-spacing:.06em;font-weight:400;text-transform:uppercase}
.mono{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace}
.amber{color:var(--amber-l)}

/* ---------------- 顶部导航 ---------------- */
.hd{
  position:fixed;top:0;left:0;right:0;z-index:90;
  transition:background .45s var(--ease),backdrop-filter .45s,border-color .45s,padding .45s var(--ease);
  border-bottom:1px solid transparent;
}
.hd__in{
  max-width:var(--max);margin:0 auto;padding:26px var(--pad);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:padding .45s var(--ease);
}
.hd.is-solid{
  background:rgba(255,255,255,.9);backdrop-filter:blur(18px) saturate(1.4);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(23,25,27,.06);
}
.hd.is-solid .logo__txt b{color:var(--ink)}
.hd.is-solid .logo__txt span{color:var(--muted)}
.hd.is-solid .nav a{color:rgba(23,25,27,.66)}
.hd.is-solid .nav a:hover,.hd.is-solid .nav a.on{color:var(--ink)}
.hd.is-solid .hd__cta{border-color:rgba(23,25,27,.22);color:var(--ink)}
.hd.is-solid .hd__cta:hover{background:var(--amber);border-color:var(--amber);color:#fff}
.hd.is-solid .burger i{background:var(--ink)}
.hd.is-solid .hd__in{padding-top:14px;padding-bottom:14px}

.logo{display:flex;align-items:center;gap:13px;flex:0 0 auto}
.logo__mark{
  width:40px;height:40px;flex:0 0 40px;
  display:grid;place-items:center;
}
.logo__mark img{width:100%;height:100%;object-fit:contain;display:block}
/* 内页页头是深底，LOGO 也给白圆托底 */
.page-inner .logo__mark{background:#fff;border-radius:50%;padding:3px}
/* 页脚深底上给 LOGO 一个白圆托底 */
.ft .logo__mark{width:46px;height:46px;flex:0 0 46px;background:#fff;border-radius:50%;padding:3px}
.logo__txt{display:flex;flex-direction:column;line-height:1.15}
.logo__txt b{font-size:16px;font-weight:800;letter-spacing:.14em;color:#fff}
.logo__txt span{font-size:9.5px;color:var(--steel);letter-spacing:.28em;text-transform:uppercase;margin-top:3px}

/* 首页首屏是亮底，导航用深色字（只作用于页头，别误伤页脚 logo） */
.page-home .hd .logo__txt b{color:var(--ink)}
.page-home .hd .logo__txt span{color:var(--muted)}
.page-home .hd .nav a{color:rgba(23,25,27,.6)}
.page-home .hd .nav a:hover,.page-home .hd .nav a.on{color:var(--ink)}
.page-home .hd .hd__cta{color:var(--ink);border-color:rgba(23,25,27,.24)}
.page-home .hd .hd__cta:hover{background:var(--amber);border-color:var(--amber);color:#fff}
.page-home .hd .burger i{background:var(--ink)}

.nav{display:flex;align-items:center;gap:38px}
.nav a{
  font-size:14.5px;color:rgba(255,255,255,.74);position:relative;padding:6px 0;
  transition:color .3s;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;background:var(--amber);
  transition:width .4s var(--ease);
}
.nav a:hover,.nav a.on{color:#fff}
.nav a:hover::after,.nav a.on::after{width:100%}

.hd__cta{
  display:inline-flex;align-items:center;gap:9px;color:#fff;
  border:1px solid rgba(255,255,255,.34);border-radius:40px;
  padding:10px 20px;font-size:13.5px;white-space:nowrap;
  transition:all .35s var(--ease);
}
.hd__cta:hover{background:var(--amber);border-color:var(--amber);color:#fff}
.hd__cta svg{width:14px;height:14px}

.burger{display:none;width:44px;height:44px;position:relative;flex:0 0 44px}
.burger i{
  position:absolute;left:11px;width:22px;height:1.6px;background:#fff;border-radius:2px;
  transition:transform .4s var(--ease),opacity .3s;
}
.burger i:nth-child(1){top:16px}
.burger i:nth-child(2){top:21.5px}
.burger i:nth-child(3){top:27px}
body.menu-open .burger i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
body.menu-open .burger i:nth-child(2){opacity:0}
body.menu-open .burger i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

.mnav{
  position:fixed;inset:0;z-index:85;background:#17191B;color:#fff;
  padding:110px var(--pad) 40px;
  display:flex;flex-direction:column;justify-content:center;gap:6px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .4s var(--ease),transform .4s var(--ease),visibility .4s;
}
body.menu-open .mnav{opacity:1;visibility:visible;transform:none}
body.menu-open .hd{background:transparent;backdrop-filter:none;border-bottom-color:transparent;box-shadow:none}
body.menu-open .hd .logo__txt b{color:#fff}
body.menu-open .hd .logo__txt span{color:var(--steel)}
body.menu-open .hd .burger i{background:#fff}
.mnav a{
  font-size:clamp(26px,7vw,38px);font-weight:800;letter-spacing:-.01em;
  padding:14px 0;border-bottom:1px solid var(--line-w);display:flex;justify-content:space-between;align-items:center;
}
.mnav a span{font-family:Impact,sans-serif;font-size:13px;color:var(--amber-l);letter-spacing:.1em}

/* ---------------- 首屏 ---------------- */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;color:var(--ink)}
.hide-sm{display:inline}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:center 42%;transform:scale(1.06);will-change:transform;filter:saturate(1.04)}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(255,255,255,.46) 0%,rgba(255,255,255,.1) 15%,rgba(255,255,255,0) 30%,rgba(255,255,255,.1) 58%,rgba(255,255,255,.72) 82%,#fff 100%),
    linear-gradient(100deg,rgba(255,255,255,.985) 0%,rgba(255,255,255,.975) 26%,rgba(255,255,255,.9) 40%,rgba(255,255,255,.5) 56%,rgba(255,255,255,.1) 72%,rgba(255,255,255,0) 82%);
}
.hero__in{position:relative;z-index:2;width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad) clamp(48px,7vh,86px)}

.hero__tag{
  display:inline-flex;align-items:center;gap:11px;
  font-size:11.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);
  margin-bottom:clamp(20px,4vh,38px);
}
.hero__tag::before{content:"";width:34px;height:1px;background:var(--amber)}
.hero h1{
  margin:0;font-size:clamp(46px,9.2vw,132px);font-weight:900;line-height:.98;letter-spacing:-.045em;
}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero__sub{
  margin:clamp(18px,3vh,30px) 0 0;max-width:640px;
  font-size:clamp(14.5px,1.35vw,18px);color:#4E5155;line-height:1.85;
}
.hero__act{display:flex;flex-wrap:wrap;gap:14px;margin-top:clamp(26px,4.5vh,44px)}

.btn{
  display:inline-flex;align-items:center;gap:11px;border-radius:44px;
  padding:15px 30px;font-size:15px;font-weight:600;
  transition:all .4s var(--ease);
}
.btn--p{background:var(--amber);color:#fff;box-shadow:0 10px 34px rgba(206,93,18,.28)}
.btn--p:hover{background:#D96D1F;transform:translateY(-2px);box-shadow:0 16px 40px rgba(206,93,18,.4)}
.btn--g{border:1px solid rgba(255,255,255,.3);color:#fff}
.btn--g:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.55);transform:translateY(-2px)}
.hero .btn--g{border-color:rgba(23,25,27,.26);color:var(--ink);background:rgba(255,255,255,.5)}
.hero .btn--g:hover{background:#fff;border-color:rgba(23,25,27,.5)}
.btn--d{background:var(--ink);color:#fff}
.btn--d:hover{background:var(--amber);color:#fff;transform:translateY(-2px)}
.sec--paper .btn--g,.sec--ink .btn--g,.sec--ink2 .btn--g{border-color:rgba(23,25,27,.24);color:var(--ink)}
.sec--paper .btn--g:hover,.sec--ink .btn--g:hover,.sec--ink2 .btn--g:hover{background:rgba(23,25,27,.055);border-color:rgba(23,25,27,.45)}
.btn svg{width:16px;height:16px;transition:transform .4s var(--ease)}
.btn:hover svg{transform:translateX(4px)}

.hero__scroll{
  position:absolute;right:var(--pad);bottom:clamp(48px,7vh,86px);z-index:2;
  display:flex;align-items:center;gap:12px;
  font-size:10.5px;letter-spacing:.26em;color:rgba(23,25,27,.42);text-transform:uppercase;
  writing-mode:vertical-rl;
}
.hero__scroll::after{
  content:"";width:1px;height:56px;background:linear-gradient(rgba(23,25,27,.45),transparent);
  animation:drop 2.4s var(--ease) infinite;
}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------------- 数据条 ---------------- */
.stats{border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d);background:var(--white);color:var(--ink)}
.stats__in{max-width:var(--max);margin:0 auto;padding:0 var(--pad);display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:clamp(30px,5vh,52px) 0;position:relative}
.stat+.stat{padding-left:clamp(20px,3vw,46px)}
.stat+.stat::before{content:"";position:absolute;left:0;top:26%;height:48%;width:1px;background:var(--line)}
.stat__n{display:flex;align-items:baseline;gap:5px;line-height:1}
.stat__n b{font-family:Impact,"Arial Narrow",sans-serif;font-size:clamp(38px,5.2vw,64px);font-weight:400;letter-spacing:.01em}
.stat__n i{font-style:normal;font-size:14px;color:var(--amber-d);letter-spacing:.04em}
.stat__t{margin-top:10px;font-size:13px;color:var(--muted);letter-spacing:.06em}

/* ---------------- 通用区块 ---------------- */
.sec{position:relative;padding:clamp(74px,11vh,132px) 0}
.sec--paper{background:var(--paper);color:var(--ink)}
.sec--ink{background:var(--white);color:var(--ink)}
.sec--ink2{background:var(--paper-2);color:var(--ink)}

.head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:clamp(38px,6vh,66px)}
.head__l{max-width:680px;flex:1 1 auto;min-width:0}
.kicker{
  display:inline-flex;align-items:center;gap:11px;font-family:Impact,sans-serif;
  font-size:12.5px;letter-spacing:.24em;color:var(--amber-d);text-transform:uppercase;margin-bottom:18px;
}
.kicker::before{content:"";width:26px;height:1px;background:currentColor}
.head h2{
  margin:0;font-size:clamp(28px,4.6vw,58px);font-weight:900;line-height:1.12;letter-spacing:-.03em;
}
.head p{margin:16px 0 0;font-size:15px;line-height:1.9;color:var(--muted);max-width:560px}
.sec--paper .head p,.sec--ink .head p,.sec--ink2 .head p{color:var(--muted)}
.head__r{flex:0 0 auto}

/* ---------------- 产品系列 ---------------- */
.plist{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(12px,1.4vw,20px)}
.card{
  position:relative;overflow:hidden;border-radius:4px;background:#1B1E21;isolation:isolate;
  color:#fff;
  grid-column:span 2;min-height:clamp(300px,38vh,420px);
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:clamp(20px,2.2vw,32px);
}
.card:nth-child(1),.card:nth-child(2){grid-column:span 3;min-height:clamp(340px,44vh,480px)}
.card img{
  position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover;
  transition:transform 1.1s var(--ease),filter .6s;
}
.card::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(17,19,21,.04) 0%,rgba(17,19,21,.44) 44%,rgba(17,19,21,.9) 100%);
  transition:opacity .5s;
}
.card:hover img{transform:scale(1.07)}
.card__no{
  position:absolute;top:clamp(16px,2vw,26px);right:clamp(16px,2vw,26px);
  font-family:Impact,sans-serif;font-size:15px;letter-spacing:.08em;color:rgba(255,255,255,.5);
}
.card h3{margin:0;font-size:clamp(21px,2.4vw,30px);font-weight:800;letter-spacing:-.01em;display:flex;align-items:center;gap:10px;text-shadow:0 2px 10px rgba(0,0,0,.55),0 1px 30px rgba(0,0,0,.45)}
.card h3 svg{width:17px;height:17px;opacity:0;transform:translateX(-6px);transition:all .45s var(--ease);color:var(--amber-l)}
.card:hover h3 svg{opacity:1;transform:none}
.card p{
  margin:9px 0 0;font-size:13px;line-height:1.7;color:rgba(255,255,255,.68);
  max-height:0;overflow:hidden;opacity:0;transition:all .55s var(--ease);
}
.card:hover p{max-height:120px;opacity:1;margin-top:11px}
.card__tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}
.card__tags span{
  font-size:11px;padding:4px 10px;border-radius:30px;
  border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.94);white-space:nowrap;
  background:rgba(17,19,21,.34);backdrop-filter:blur(6px);
}

/* ---------------- 优势 ---------------- */
.why{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,72px);align-items:stretch}
.why__media{position:relative;border-radius:4px;overflow:hidden;min-height:clamp(320px,42vw,560px)}
.why__media img{width:100%;height:100%;object-fit:cover}
.why__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(240,154,86,.16),transparent 55%);
}
.why__badge{
  position:absolute;left:0;bottom:0;background:var(--amber);color:#fff;
  padding:16px 24px;font-weight:800;font-size:13px;letter-spacing:.06em;line-height:1.5;
}
.why__badge b{display:block;font-family:Impact,sans-serif;font-size:38px;font-weight:400;letter-spacing:.02em}
.wlist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0}
.witem{
  display:grid;grid-template-columns:auto 1fr;gap:20px;
  padding:23px 0;border-top:1px solid var(--line);
  transition:padding .4s var(--ease);
}
.witem:last-child{border-bottom:1px solid var(--line)}
.witem:hover{padding-left:8px}
.witem__i{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(23,25,27,.2);
  display:grid;place-items:center;color:var(--amber);flex:0 0 38px;margin-top:3px;
  transition:all .4s var(--ease);
}
.witem:hover .witem__i{background:var(--amber);border-color:var(--amber);color:#fff}
.witem__i svg{width:17px;height:17px}
.witem h4{margin:0 0 6px;font-size:16.5px;font-weight:700;letter-spacing:.01em}
.witem p{margin:0;font-size:13.5px;line-height:1.8;color:var(--muted)}

/* ---------------- 流程 ---------------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.step{
  padding:clamp(26px,3.6vw,44px) clamp(20px,2.4vw,34px) clamp(30px,4vw,48px) 0;
  border-bottom:1px solid var(--line);position:relative;
  transition:background .45s;
}
.step:nth-child(3n+2),.step:nth-child(3n+3){padding-left:clamp(20px,2.4vw,34px);border-left:1px solid var(--line)}
.step:hover{background:rgba(23,25,27,.022)}
.step__no{
  font-family:Impact,sans-serif;font-size:clamp(30px,3.4vw,44px);color:transparent;
  -webkit-text-stroke:1.2px rgba(206,93,18,.62);line-height:1;letter-spacing:.03em;
  transition:all .45s var(--ease);
}
.step:hover .step__no{-webkit-text-stroke:1px var(--amber);color:var(--amber)}
.step h4{margin:16px 0 9px;font-size:17px;font-weight:700}
.step p{margin:0;font-size:13.5px;line-height:1.8;color:var(--muted)}

/* 四列流程（联系页） */
.flow--4{grid-template-columns:repeat(4,1fr)}
.flow--4 .step{padding-left:0;border-left:0}
.flow--4 .step+.step{padding-left:clamp(16px,2vw,28px);border-left:1px solid var(--line)}

/* ---------------- 场景 ---------------- */
.scenes{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:clamp(150px,15.5vw,208px);gap:clamp(10px,1.2vw,16px)}
.scene{position:relative;overflow:hidden;border-radius:4px;isolation:isolate;min-height:0;color:#fff}
.scene:first-child{grid-column:span 2;grid-row:span 2}
.scene img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.scene::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(17,19,21,.84),rgba(17,19,21,.06) 62%,rgba(17,19,21,0) 100%)}
.scene:hover img{transform:scale(1.06)}
.scene span{
  position:absolute;left:clamp(14px,1.6vw,22px);bottom:clamp(14px,1.6vw,22px);z-index:2;
  font-size:clamp(14px,1.4vw,18px);font-weight:700;letter-spacing:.02em;
  text-shadow:0 2px 14px rgba(0,0,0,.72),0 1px 3px rgba(0,0,0,.5);
}
.scene span i{
  display:block;font-style:normal;font-family:Impact,sans-serif;font-size:10.5px;
  letter-spacing:.2em;color:#FFB077;margin-bottom:5px;text-shadow:0 1px 8px rgba(0,0,0,.8);
}

/* ---------------- CTA ---------------- */
.cta{
  background:linear-gradient(115deg,#1B1E21 0%,#23272B 52%,#2D3237 100%);
  color:#fff;padding:clamp(56px,9vh,100px) 0;position:relative;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;right:-8%;top:-40%;width:52vw;height:52vw;border-radius:50%;
  border:1px solid rgba(224,138,66,.22);pointer-events:none;
}
.cta::after{
  content:"";position:absolute;right:-12%;top:-36%;width:62vw;height:62vw;border-radius:50%;
  background:radial-gradient(circle,rgba(206,93,18,.22) 0%,rgba(206,93,18,.07) 44%,rgba(206,93,18,0) 66%);
  pointer-events:none;
}
/* CTA 在深底上：按钮换品牌橙，文字转白 */
.cta .btn--d{background:var(--amber);color:#fff;box-shadow:0 12px 32px rgba(0,0,0,.34)}
.cta .btn--d:hover{background:var(--amber-l);color:#17191B}
.cta .btn--d svg{transition:transform .35s var(--ease)}
.cta .btn--d:hover svg{transform:translateX(4px)}
.cta__in{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta h2{margin:0;font-size:clamp(26px,4.2vw,50px);font-weight:900;letter-spacing:-.035em;line-height:1.16;color:#fff}
.cta h2 em{font-style:normal;color:var(--amber-l)}
.cta p{margin:14px 0 0;font-size:15px;color:rgba(255,255,255,.64);max-width:520px}

/* ---------------- 页脚 ---------------- */
.ft{background:#111315;color:#fff;padding:clamp(50px,7vh,78px) 0 30px}
.ft__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(24px,4vw,50px);padding-bottom:clamp(34px,5vh,52px)}
.ft h5{margin:0 0 18px;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.48);font-weight:600}
.ft ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.ft a,.ft li{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .3s}
.ft a:hover{color:var(--amber-l)}
.ft__brand p{margin:16px 0 0;font-size:13px;line-height:1.85;color:rgba(255,255,255,.5);max-width:300px}
.ft__bot{
  border-top:1px solid var(--line-w);padding-top:24px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.45);
}
.ft__bot a{font-size:12px}

/* ---------------- 内页通用 ---------------- */
.phero{
  position:relative;min-height:clamp(330px,52vh,520px);display:flex;align-items:flex-end;
  padding-top:120px;padding-bottom:clamp(38px,6vh,66px);overflow:hidden;background:#17191B;color:#fff;
}
.phero__bg{position:absolute;inset:0;z-index:0}
.phero__bg img{width:100%;height:100%;object-fit:cover;opacity:.52}
.phero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(17,19,21,.92),rgba(17,19,21,.5) 50%,#111315)}
.phero__in{position:relative;z-index:2;width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.crumb{display:flex;align-items:center;gap:9px;font-size:12px;color:rgba(255,255,255,.42);margin-bottom:20px;letter-spacing:.04em}
.crumb a:hover{color:var(--amber-l)}
.phero h1{margin:0;font-size:clamp(32px,6vw,74px);font-weight:900;letter-spacing:-.04em;line-height:1.04}
.phero p{margin:16px 0 0;font-size:15px;color:rgba(255,255,255,.66);max-width:620px;line-height:1.85}

/* 产品详解 */
.pblock{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,4.5vw,64px);align-items:center;
  padding:clamp(44px,6.5vh,74px) 0;border-top:1px solid var(--line-d);
}
.pblock:first-of-type{border-top:0}
.pblock:nth-child(even) .pblock__m{order:2}
.pblock__m{position:relative;border-radius:4px;overflow:hidden;aspect-ratio:4/3.2}
.pblock__m img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.pblock:hover .pblock__m img{transform:scale(1.045)}
.pblock__no{
  position:absolute;left:0;top:0;background:var(--amber);color:#fff;
  font-family:Impact,sans-serif;font-size:16px;padding:7px 14px;letter-spacing:.06em;z-index:2;
}
.pblock h3{margin:0 0 14px;font-size:clamp(23px,3vw,34px);font-weight:900;letter-spacing:-.02em}
.pblock h3 em{font-style:normal;color:var(--amber);font-family:Impact,sans-serif;font-size:.62em;letter-spacing:.08em;margin-right:10px;vertical-align:2px}
.pblock p{margin:0 0 20px;font-size:14.5px;line-height:1.9;color:#5F6165}
.pblock ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:11px 20px}
.pblock li{font-size:13.5px;display:flex;align-items:flex-start;gap:9px;color:#2b2b2d}
.pblock li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber);flex:0 0 5px;margin-top:9px}

/* 关于 */
.about__lead{display:grid;grid-template-columns:1fr 1.25fr;gap:clamp(28px,5vw,70px);align-items:start}
.about__lead h2{margin:0;font-size:clamp(26px,3.8vw,46px);font-weight:900;line-height:1.2;letter-spacing:-.03em}
.about__lead .txt p{margin:0 0 18px;font-size:14.5px;line-height:1.95;color:#5F6165}
.about__lead .txt p:last-child{margin-bottom:0}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-d);margin-top:clamp(36px,5vh,56px);border:1px solid var(--line-d)}
.fact{background:var(--paper);padding:clamp(20px,2.6vw,32px)}
.fact dt{font-size:12px;color:var(--steel-d);letter-spacing:.08em;margin-bottom:9px}
.fact dd{margin:0;font-size:15px;font-weight:700;line-height:1.55;color:#17191B}

/* 联系 */
.cgrid{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(30px,5vw,70px);align-items:start}
.cinfo dl{margin:0 0 26px}
.cinfo dt{font-size:11.5px;letter-spacing:.2em;color:var(--steel-d);text-transform:uppercase;margin-bottom:8px}
.cinfo dd{margin:0 0 22px;font-size:16px;font-weight:600;line-height:1.7;color:#17191B}
.cinfo dd small{display:block;font-weight:400;font-size:12.5px;color:var(--steel-d);margin-top:4px}
.form{background:#fff;border:1px solid var(--line-d);border-radius:5px;padding:clamp(24px,3vw,40px)}
.form h3{margin:0 0 6px;font-size:20px;font-weight:800}
.form>p{margin:0 0 24px;font-size:13px;color:var(--steel-d)}
.fld{margin-bottom:18px}
.fld label{display:block;font-size:12.5px;color:#5F6165;margin-bottom:7px;letter-spacing:.03em}
.fld label i{color:var(--amber);font-style:normal}
.fld input,.fld textarea,.fld select{
  width:100%;border:1px solid #DDDCD6;border-radius:3px;padding:12px 14px;
  font-size:14px;font-family:inherit;color:#17191B;background:#FFFFFF;
  transition:border-color .3s,box-shadow .3s;
}
.fld textarea{resize:vertical;min-height:104px}
.fld input:focus,.fld textarea:focus,.fld select:focus{
  outline:0;border-color:var(--amber);background:#fff;box-shadow:0 0 0 3px rgba(206,93,18,.14);
}
.form__ok{
  display:none;margin-top:16px;padding:14px 16px;border-radius:3px;font-size:13px;line-height:1.7;
  background:rgba(206,93,18,.09);border:1px solid rgba(206,93,18,.3);color:#A34708;
}
.form__ok.on{display:block}

/* 案例网格 */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(14px,1.8vw,24px)}
.case{position:relative;overflow:hidden;border-radius:4px;aspect-ratio:3/2;isolation:isolate;background:#111;color:#fff}
.case img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
.case::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(17,19,21,.92) 0%,rgba(17,19,21,.58) 36%,rgba(17,19,21,.1) 68%,rgba(17,19,21,0) 90%)}
.case:hover img{transform:scale(1.06)}
.case__in{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:clamp(16px,2vw,26px)}
.case__in i{font-style:normal;font-family:Impact,sans-serif;font-size:10.5px;letter-spacing:.22em;color:#FFB077;text-shadow:0 1px 8px rgba(0,0,0,.75)}
.case__in h4{margin:7px 0 0;font-size:clamp(16px,1.7vw,20px);font-weight:800}
.case__in p{margin:7px 0 0;font-size:13px;color:rgba(255,255,255,.7);line-height:1.7;max-width:520px}

/* 提示条 */
.note{
  background:rgba(206,93,18,.07);border:1px solid rgba(206,93,18,.26);
  border-left-width:3px;border-radius:3px;padding:15px 18px;font-size:13px;line-height:1.8;color:#A34708;
  margin:0 0 34px;
}
.note b{color:#6d3712}

/* ---------------- 入场动画 ---------------- */
html.js .rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
html.js .rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
.rv-d4{transition-delay:.32s}.rv-d5{transition-delay:.4s}.rv-d6{transition-delay:.48s}

/* ---------------- 集团成员 ---------------- */
.mtbl{width:100%;border-collapse:collapse;font-size:14px;margin-top:4px}
.mtbl caption{text-align:left;padding:0 0 16px;font-size:12.5px;color:var(--steel-d);letter-spacing:.01em}
.mtbl th{text-align:left;font-weight:600;font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--steel-d);padding:0 12px 13px;border-bottom:1px solid var(--line);white-space:nowrap}
.mtbl td{padding:16px 12px;border-bottom:1px solid var(--line-d);vertical-align:top;line-height:1.6}
.mtbl tbody tr{transition:background .3s}
.mtbl tbody tr:hover{background:rgba(206,93,18,.045)}
.mtbl .co{font-weight:700;color:var(--ink);font-size:14.5px;line-height:1.45}
.mtbl .co small{display:block;font-weight:400;font-size:11.5px;color:var(--steel-d);margin-top:4px;letter-spacing:.02em}
.mtbl .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;font-size:13.5px}
.mtbl .tag{display:inline-block;font-size:11.5px;padding:3px 8px;border-radius:2px;
  background:rgba(206,93,18,.1);color:var(--amber-d);white-space:nowrap;letter-spacing:.02em}
.mtbl .tag--mut{background:rgba(23,25,27,.06);color:var(--muted)}
.mtbl tfoot td{font-weight:800;border-bottom:0;border-top:2px solid var(--ink);
  background:rgba(23,25,27,.025);padding:16px 12px;font-size:13.5px}
.mtbl__box{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:clamp(26px,4vh,40px)}
.mtbl__box::-webkit-scrollbar{height:7px}

.regions{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line-d);border:1px solid var(--line-d);margin-top:clamp(30px,5vh,50px)}
.region{background:var(--white);padding:clamp(22px,2.6vw,32px);transition:background .4s var(--ease)}
.region:hover{background:var(--paper)}
.region__r{font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--amber);font-weight:800}
.region h4{margin:11px 0 5px;font-size:17px;font-weight:800;letter-spacing:-.01em}
.region__co{font-size:12.5px;color:var(--ink);font-weight:600;line-height:1.5}
.region__d{margin:11px 0 0;font-size:12.5px;line-height:1.75;color:var(--steel-d)}

.entities{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,1.6vw,20px);
  margin-top:clamp(28px,4vh,44px)}
.entity{border:1px solid var(--line-d);border-radius:4px;padding:clamp(20px,2.2vw,26px);
  background:var(--white);transition:border-color .4s,box-shadow .4s}
.entity:hover{border-color:var(--line);box-shadow:0 12px 34px rgba(23,25,27,.06)}
.entity h4{margin:0 0 4px;font-size:14.5px;font-weight:800;line-height:1.5}
.entity__role{font-size:11.5px;color:var(--amber);font-weight:700;letter-spacing:.04em;margin-bottom:14px}
.entity dl{margin:0;font-size:12.5px;line-height:1.65}
.entity dt{color:var(--steel-d);font-size:11px;letter-spacing:.04em;margin-top:10px}
.entity dd{margin:2px 0 0;color:var(--ink);word-break:break-word}
.entity .code{font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;letter-spacing:.015em;font-size:12px}

.gnote{display:grid;grid-template-columns:auto 1fr;gap:clamp(16px,2.4vw,28px);
  align-items:start;padding:clamp(22px,3vw,32px);background:rgba(206,93,18,.06);
  border-left:3px solid var(--amber);border-radius:0 4px 4px 0;margin-top:clamp(28px,4vh,44px)}
.gnote b{color:var(--amber-d);font-size:12px;letter-spacing:.12em;text-transform:uppercase;white-space:nowrap;padding-top:3px}
.gnote p{margin:0;font-size:13.5px;line-height:1.85;color:var(--muted)}
.gnote p + p{margin-top:9px}

/* ---------------- FAQ ---------------- */
.faq{max-width:920px;margin-top:clamp(30px,4.5vh,46px);border-top:1px solid var(--line-d)}
.faq details{border-bottom:1px solid var(--line-d)}
.faq summary{cursor:pointer;padding:21px 44px 21px 0;position:relative;font-size:15.5px;
  font-weight:700;line-height:1.65;list-style:none;transition:color .3s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--amber-d)}
.faq summary::after{content:"+";position:absolute;right:8px;top:16px;font-size:23px;
  font-weight:300;color:var(--amber);line-height:1;transition:transform .35s var(--ease)}
.faq details[open] summary::after{content:"\2212";transform:rotate(180deg)}
.faq .faq__a{padding:0 44px 24px 0;font-size:14px;line-height:1.95;color:var(--muted)}
.faq .faq__a strong{color:var(--ink);font-weight:700}
.faq .faq__a p{margin:0 0 10px}
.faq .faq__a p:last-child{margin-bottom:0}
.faq .faq__a ul{margin:8px 0 10px;padding-left:20px}
.faq .faq__a li{margin-bottom:5px}

@media (prefers-reduced-motion:reduce){
  html.js .rv{opacity:1;transform:none;transition:none}
  .hero__scroll::after{animation:none}
  html{scroll-behavior:auto}
}

/* ---------------- 响应式 ---------------- */
@media(max-width:1080px){
  .regions{grid-template-columns:1fr 1fr}
  .entities{grid-template-columns:1fr 1fr}
}
@media(max-width:1080px){
  .plist{grid-template-columns:repeat(4,1fr)}
  .card{grid-column:span 2}
  .card:nth-child(1),.card:nth-child(2){grid-column:span 4}
  .why{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2n+2){padding-left:clamp(20px,2.4vw,34px);border-left:1px solid var(--line)}
  .step:nth-child(3n+3){padding-left:0;border-left:0}
  .ft__top{grid-template-columns:1fr 1fr}
  .about__lead{grid-template-columns:1fr}
  .cgrid{grid-template-columns:1fr}
  .cases{grid-template-columns:repeat(2,1fr)}
  .stats__in{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-top:1px solid var(--line)}
  .stat:nth-child(4){border-top:1px solid var(--line)}
  .stat:nth-child(3)::before{display:none}
  .pblock{grid-template-columns:1fr;gap:26px}
  .pblock:nth-child(even) .pblock__m{order:0}
}
@media(max-width:860px){
  .nav,.hd__cta{display:none}
  .burger{display:block}
  .hero__scroll{display:none}
  .flow--4{grid-template-columns:1fr 1fr}
  .flow--4 .step+.step{border-left:0;padding-left:0}
  .flow--4 .step:nth-child(2n){border-left:1px solid var(--line);padding-left:clamp(16px,2vw,28px)}
  .hero__bg::after{
    background:
      linear-gradient(180deg,rgba(255,255,255,.5) 0%,rgba(255,255,255,.05) 11%,rgba(255,255,255,0) 22%,rgba(255,255,255,.7) 44%,rgba(255,255,255,.96) 58%,#fff 72%);
  }
  .scenes{grid-template-columns:1fr 1fr;grid-auto-rows:clamp(120px,30vw,180px)}
  .scene:first-child{grid-column:span 2;grid-row:span 2}
  .facts{grid-template-columns:1fr}
  .hero__in{padding-bottom:56px}
}
@media(max-width:620px){
  .regions{grid-template-columns:1fr}
  .entities{grid-template-columns:1fr}
  .mtbl{font-size:12.5px}
  .mtbl td{padding:12px 8px}
  .mtbl .co{font-size:13px}
  .gnote{grid-template-columns:1fr;gap:10px}
}
@media(max-width:620px){
  :root{--pad:20px}
  .hide-sm{display:none}
  .hero__tag{letter-spacing:.2em;font-size:10.5px}
  .plist{grid-template-columns:1fr}
  .card,.card:nth-child(1),.card:nth-child(2){grid-column:span 1;min-height:280px}
  .flow{grid-template-columns:1fr}
  .step,.step:nth-child(2n+2),.step:nth-child(3n+3){padding-left:0;border-left:0}
  .flow--4{grid-template-columns:1fr}
  .flow--4 .step:nth-child(2n){border-left:0;padding-left:0}
  .cases{grid-template-columns:1fr}
  .pblock ul{grid-template-columns:1fr}
  .ft__top{grid-template-columns:1fr}
  .head{gap:20px}
  .cta__in{gap:26px}
}


/* ---------------- 手机端：成员表转卡片 ---------------- */
@media(max-width:620px){
  .mtbl__box{overflow:visible}
  .mtbl{display:block;width:100%}
  .mtbl caption{font-size:11.5px;line-height:1.7;padding-bottom:12px}
  .mtbl thead{display:none}
  .mtbl tbody{display:block;width:100%}
  .mtbl tbody tr{display:block;border:1px solid var(--line-d);border-radius:4px;
    background:var(--white);padding:15px 16px;margin-bottom:11px}
  .mtbl tbody tr:hover{background:var(--white)}
  .mtbl tbody td{display:flex;align-items:baseline;justify-content:space-between;
    gap:14px;border:0;padding:3.5px 0;text-align:left;font-size:13px}
  .mtbl tbody td::before{content:attr(data-label);flex:0 0 auto;
    color:var(--steel-d);font-size:11.5px;letter-spacing:.02em;font-weight:400}
  .mtbl tbody td:first-child{display:none}
  .mtbl tbody td.co{display:block;font-size:14.5px;line-height:1.5;
    padding:0 0 9px;margin-bottom:7px;border-bottom:1px solid var(--line-d)}
  .mtbl tbody td.co::before{display:none}
  .mtbl tbody td.num{justify-content:flex-end;text-align:right}
  .mtbl tbody td.num::before{margin-right:auto}
  .mtbl tbody td .tag{margin-left:auto}
  .mtbl tfoot{display:block}
  .mtbl tfoot tr{display:block;border:1px solid var(--line-d);border-radius:4px;
    background:rgba(23,25,27,.03);padding:14px 16px}
  .mtbl tfoot td{display:inline-block;border:0;padding:0 12px 0 0;font-size:13px}
  .mtbl tfoot td::before{display:none}
  .mtbl tfoot td[colspan]{display:block;width:100%;padding:0 0 8px;
    margin-bottom:8px;border-bottom:1px solid var(--line-d)}
  .mtbl tfoot td[colspan]:empty{display:none}
}