:root {
  --bg:#0D131A; --bg2:#101820; --panel:#121A23; --panel2:#161F29;
  --line:#27313B; --text:#F2F4F6; --muted:#AAB4BE;
  --gold:#C9A56A; --gold2:#DEC18B; --green:#93C7A5;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"Microsoft YaHei","PingFang SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.56;
  padding-bottom:calc(68px + env(safe-area-inset-bottom));
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:auto;padding:0 18px}

.nav{
  position:sticky;top:0;z-index:60;height:58px;
  background:rgba(13,19,26,.96);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.navin{height:58px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:900}
.logo{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;background:linear-gradient(145deg,var(--gold2),#8F713D);color:#11161B;font-size:12px}
.desktopNav{display:none}

.hero{
  min-height:555px;display:flex;align-items:flex-end;padding:64px 0 34px;
  background-image:
    linear-gradient(180deg,rgba(8,12,17,.18) 0%,rgba(8,12,17,.46) 42%,rgba(8,12,17,.96) 86%,var(--bg) 100%),
    linear-gradient(90deg,rgba(8,12,17,.90) 0%,rgba(8,12,17,.62) 58%,rgba(8,12,17,.34) 100%),
    url("../images/hero-bg-demo.svg");
  background-size:cover;background-position:68% center;
}
.eyebrow{font-size:10.5px;letter-spacing:1.15px;color:var(--gold2);font-weight:900}
h1{font-size:37px;line-height:1.08;letter-spacing:-.4px;margin:11px 0 14px;max-width:620px}
.hero p{font-size:14.5px;color:#C1C8D0;margin:0 0 20px;max-width:620px}
.hero .brandline{font-size:12px;color:#919CA7;margin-top:14px}
.actions{display:grid;grid-template-columns:1fr;gap:9px}
.btn{min-height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:13.5px;font-weight:900;padding:0 15px}
.primary{background:linear-gradient(145deg,var(--gold2),var(--gold));color:#11161B}
.ghost{border:1px solid #39434E;background:rgba(18,26,35,.88)}

section{padding:54px 0;content-visibility:auto;contain-intrinsic-size:1px 700px}
.sectionhead{margin-bottom:22px}
.sectionhead h2{font-size:27px;line-height:1.18;margin:6px 0 8px;letter-spacing:-.2px}
.sectionhead p{font-size:13.5px;color:var(--muted);margin:0}

.quick{margin-top:-12px;position:relative;z-index:4}
.quickgrid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.q{padding:14px;border:1px solid var(--line);border-radius:13px;background:rgba(18,26,35,.98)}
.q strong{display:block;font-size:14px;margin-bottom:2px}
.q span{font-size:10.5px;color:var(--muted)}

.equipmentGrid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.eq{min-height:172px;border:1px solid var(--line);border-radius:15px;overflow:hidden;position:relative;background:linear-gradient(145deg,#131B24,#0F151D)}
.eq .art{position:absolute;inset:0;background:
  radial-gradient(circle at 75% 18%,rgba(201,165,106,.10),transparent 23%),
  linear-gradient(145deg,#131B24,#0F151D)}
.eq .art:after{content:"真实设备图";position:absolute;right:10px;top:10px;font-size:9px;color:#7D8994;border:1px dashed #4E5A66;border-radius:7px;padding:3px 6px}
.eq .overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 24%,rgba(9,13,18,.92))}
.eq .txt{position:absolute;left:13px;right:13px;bottom:12px;z-index:2}
.eq h3{font-size:16px;margin:0 0 3px}
.eq p{font-size:10.5px;color:#C1C8D0;margin:0}

.cases{background:var(--bg2)}
.case{border:1px solid var(--line);border-radius:17px;overflow:hidden;background:var(--panel);margin-bottom:14px}
.visual{height:228px;position:relative;background:
  linear-gradient(180deg,rgba(8,12,16,.03),rgba(8,12,16,.82)),
  repeating-linear-gradient(135deg,#111923,#111923 15px,#16202A 15px,#16202A 30px)}
.ph{position:absolute;left:50%;top:43%;transform:translate(-50%,-50%);width:75%;padding:13px;border:1px dashed #667481;border-radius:11px;text-align:center;color:#AEB8C1;background:rgba(10,14,19,.72);font-size:11px}
.cap{position:absolute;left:15px;right:15px;bottom:13px;z-index:2}
.tag{display:inline-block;font-size:9.5px;padding:4px 7px;border-radius:999px;background:rgba(255,255,255,.08);margin-bottom:5px}
.cap h3{font-size:19px;line-height:1.2;margin:0 0 3px}
.cap p{font-size:10.5px;color:#C4CCD4;margin:0}
.content{padding:18px}
.label{font-size:9.5px;letter-spacing:1px;color:var(--gold2);font-weight:900}
.content h3{font-size:19px;line-height:1.24;margin:6px 0 13px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.pricebox{padding:12px;border:1px solid var(--line);border-radius:11px;background:#0E141B}
.pricebox.used{border-color:rgba(201,165,106,.44);background:linear-gradient(180deg,rgba(201,165,106,.07),#0E141B)}
.pricebox small{font-size:9.5px;color:var(--muted)}
.price{font-size:21px;font-weight:900;margin-top:3px}
.save{margin:9px 0 11px;padding:12px 13px;border-radius:11px;background:rgba(147,199,165,.08);border:1px solid rgba(147,199,165,.20)}
.save strong{display:block;font-size:18px;color:var(--green)}
.save span{font-size:9.5px;color:#C6D7CC}
.desc{font-size:11.5px;color:var(--muted);margin:0}

.testingGrid{display:grid;gap:10px}
.testcard{display:grid;grid-template-columns:105px 1fr;border:1px solid var(--line);border-radius:15px;overflow:hidden;background:var(--panel);min-height:142px}
.testshot{display:grid;place-items:center;text-align:center;padding:9px;background:linear-gradient(145deg,#111923,#0F161D);color:#8896A2;font-size:9.5px;border-right:1px solid var(--line)}
.testbody{padding:14px}
.testbody h3{font-size:16px;margin:0 0 7px}
.checklist{display:grid;grid-template-columns:1fr 1fr;gap:4px 7px}
.check{font-size:10.5px;color:#C9D0D7}
.check:before{content:"✓";color:var(--gold2);font-weight:900;margin-right:4px}

.proof{background:var(--bg2)}
.proofWall{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:215px 150px;gap:7px}
.proofBox{position:relative;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:repeating-linear-gradient(135deg,#111923,#111923 15px,#16202A 15px,#16202A 30px)}
.proofBox.big{grid-column:1 / -1}
.proofPh{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:#8794A0;font-size:10.5px;padding:14px}
.proofLabel{position:absolute;left:10px;bottom:9px;padding:7px 8px;border-radius:8px;background:rgba(9,13,18,.84);border:1px solid rgba(255,255,255,.08)}
.proofLabel b{display:block;font-size:12px}
.proofLabel span{font-size:8.5px;color:#C3CBD3}

.invest{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.investCard{padding:14px;border:1px solid var(--line);border-radius:13px;background:var(--panel)}
.investCard b{display:block;font-size:13px;color:var(--gold2);margin-bottom:3px}
.investCard span{font-size:9.5px;color:var(--muted)}

.cta{padding:60px 0 28px;background-image:linear-gradient(rgba(9,13,18,.91),rgba(9,13,18,.97)),url("../images/hero-bg-demo.svg");background-size:cover;background-position:center}
.ctabox{padding:24px;border-radius:18px;border:1px solid rgba(201,165,106,.32);background:rgba(12,17,23,.88)}
.ctabox h2{font-size:27px;line-height:1.16;margin:6px 0 10px}
.ctabox p{font-size:12.5px;color:var(--muted);margin:0 0 16px}
.note{font-size:9.5px;color:#7F8995;margin-top:10px}

footer{padding:20px 18px 92px;color:#7F8995;font-size:9.5px;text-align:center}

.mobileBar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  padding:8px 12px calc(8px + env(safe-area-inset-bottom));
  background:rgba(11,16,22,.98);
  border-top:1px solid rgba(255,255,255,.08);
}
.mobileBarInner{max-width:680px;margin:auto}
.mobileBar a{height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:linear-gradient(145deg,var(--gold2),var(--gold));color:#11161B;font-weight:900;font-size:13px}

@media(min-width:720px){
  body{padding-bottom:0}
  .wrap{padding:0 24px}
  .nav{height:68px} .navin{height:68px}
  .desktopNav{display:flex;gap:22px;align-items:center;font-size:13px;color:#D1D7DE}
  .desktopNav .quote{padding:9px 13px;border:1px solid rgba(201,165,106,.48);border-radius:10px}
  .hero{min-height:690px;align-items:center;padding:82px 0 52px;background-position:center}
  h1{font-size:64px}
  .hero p{font-size:17px}
  .actions{display:flex}
  .btn{min-width:188px}
  section{padding:80px 0}
  .sectionhead{display:flex;align-items:end;justify-content:space-between;gap:30px}
  .sectionhead h2{font-size:36px}
  .sectionhead p{max-width:560px}
  .quickgrid{grid-template-columns:repeat(4,1fr)}
  .equipmentGrid{grid-template-columns:repeat(4,1fr);gap:14px}
  .eq{min-height:250px}
  .case{display:grid;grid-template-columns:1.05fr .95fr}
  .case.reverse{grid-template-columns:.95fr 1.05fr}
  .case.reverse .visual{order:2}
  .case.reverse .content{order:1}
  .visual{height:auto;min-height:430px}
  .content{padding:36px}
  .testingGrid{grid-template-columns:repeat(3,1fr)}
  .testcard{display:block}
  .testshot{height:170px;border-right:0;border-bottom:1px solid var(--line)}
  .checklist{grid-template-columns:1fr}
  .proofWall{grid-template-columns:1.15fr .85fr;grid-template-rows:260px 260px;gap:0}
  .proofBox.big{grid-column:auto;grid-row:1 / span 2;border-radius:20px 0 0 20px}
  .proofBox:nth-child(2){border-left:0;border-bottom:0;border-radius:0 20px 0 0}
  .proofBox:nth-child(3){border-left:0;border-radius:0 0 20px 0}
  .invest{grid-template-columns:repeat(4,1fr)}
  .ctabox{max-width:900px;margin:auto;text-align:center;padding:44px}
  .ctabox h2{font-size:40px}
  .ctabox p{max-width:700px;margin:0 auto 22px;font-size:14px}
  .ctabox .actions{justify-content:center}
  .mobileBar{display:none}
  footer{padding-bottom:40px}
}
@media(min-width:1024px){ h1{font-size:76px} }
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ===== 制作说明层：正式上线时可删除 ===== */
.productionToggle{
  position:fixed;right:14px;top:72px;z-index:120;
  border:1px solid rgba(201,165,106,.55);
  background:#C9A56A;color:#11161B;border-radius:999px;
  padding:9px 13px;font-size:11px;font-weight:900;cursor:pointer;
  box-shadow:0 8px 24px rgba(0,0,0,.28)
}
.productionNote{
  display:none;
  margin:10px 0 0;
  padding:12px 13px;
  border-radius:12px;
  border:1px dashed rgba(255,78,78,.58);
  background:rgba(255,78,78,.055);
  color:#FF6666;
  font-size:11px;
  line-height:1.55
}
body.showProductionNotes .productionNote{display:block}
.productionNote:before{
  content:"注释";
  display:inline-block;
  margin:0 7px 6px 0;
  padding:2px 7px;
  border-radius:6px;
  background:#FF4E4E;
  color:#FFFFFF;
  font-size:10px;
  font-weight:900;
  letter-spacing:.5px
}
.productionNote b{color:#FF4E4E}
.imageSpec{
  display:inline-block;margin-top:5px;padding:4px 7px;border-radius:7px;
  background:rgba(255,78,78,.07);color:#FF8A8A;font-size:10px;
  border:1px solid rgba(255,78,78,.18)
}
.dataPending{
  display:inline-block;padding:2px 6px;border-radius:6px;
  background:rgba(201,165,106,.08);border:1px dashed rgba(201,165,106,.4);
  color:#D9BF8E
}
.microcopy{margin-top:6px;font-size:10px;color:#87939F}
@media(min-width:720px){
  .productionToggle{top:82px;right:22px}
  .productionNote{font-size:12px}
}