/* MS09 Netro — 数字机构，SVG 湍流丝带球 */
:root{
  --blood:#5a0f1f;
  --blood-2:#3d0a15;
  --blood-3:#25060d;
  --blood-4:#17040a;
  --ink:#f6f1f1;
  --muted:#c2a8ac;
  --muted-2:#8e6d73;
  --pink:#e0576f;
  --pink-2:#ff8a9c;
  --line:rgba(246,241,241,.13);
  --pad:clamp(18px,4.4vw,58px);
  --max:1360px;
  --sans:"Segoe UI",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --grotesk:"Arial Black","Segoe UI",var(--sans);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--blood-4);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.66;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.wrap{position:relative;z-index:2}

/* ---------- 顶栏 ---------- */
.head{position:fixed;top:0;left:0;right:0;z-index:70;display:flex;align-items:center;
  justify-content:space-between;gap:20px;padding:18px var(--pad);
  transition:background .35s,backdrop-filter .35s,padding .35s}
.head.solid{background:rgba(23,4,10,.76);backdrop-filter:blur(18px) saturate(140%);
  padding-top:12px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.mk{width:32px;height:32px;border-radius:9px;border:1px solid rgba(246,241,241,.5);
  display:grid;place-items:center;font-size:14px;font-weight:600;position:relative}
.mk::after{content:"";position:absolute;inset:4px;border:1px solid rgba(224,87,111,.7);
  border-radius:6px;border-right-color:transparent;border-bottom-color:transparent;transform:rotate(45deg)}
.head nav ul{display:flex;gap:clamp(12px,2vw,28px);list-style:none;margin:0;padding:0}
.head nav a{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:#cdb8bc;
  padding-bottom:3px;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.head nav a:hover{color:#fff;border-bottom-color:var(--pink)}
.head nav a.on{color:#fff;border-bottom-color:var(--pink)}
.talk{font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;padding:9px 16px;
  border:1px solid rgba(246,241,241,.34);border-radius:999px;color:#f2e8ea;
  transition:background .25s,border-color .25s,color .25s}
.talk:hover{background:var(--pink);border-color:var(--pink);color:#1a040a}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:100svh;display:grid;
  grid-template-columns:1.04fr .96fr;align-items:center;gap:clamp(20px,3.6vw,56px);
  padding:clamp(104px,14vh,150px) var(--pad) clamp(36px,5vh,64px);overflow:hidden}
/* 背景光晕 */
.hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(58% 46% at 66% 44%,rgba(150,26,52,.55),transparent 66%),
    radial-gradient(70% 56% at 20% 8%,rgba(90,15,31,.5),transparent 70%),
    linear-gradient(168deg,#2a0710 0%,#1c050c 52%,#120308 100%)}
/* 丝带球 */
.orbwrap{position:absolute;right:clamp(-5%,-2vw,0%);top:47%;transform:translateY(-56%);
  width:min(56vw,660px);aspect-ratio:1;z-index:1;pointer-events:none;
  /* 边缘化开，右下角让给服务清单，避免文字压在亮边上 */
  -webkit-mask-image:radial-gradient(closest-side at 48% 44%,#fff 46%,rgba(255,255,255,.55) 74%,transparent 100%);
  mask-image:radial-gradient(closest-side at 48% 44%,#fff 46%,rgba(255,255,255,.55) 74%,transparent 100%)}
.orbwrap svg{width:100%;height:100%;display:block}
.orbwrap::after{content:"";position:absolute;inset:14%;border-radius:50%;
  box-shadow:0 0 120px 40px rgba(200,60,90,.28);filter:blur(30px);z-index:-1}

.hero-copy{position:relative;z-index:3;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:9.5px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--pink-2)}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--pink);display:block}
.hero h1{margin:20px 0 0;font-family:var(--grotesk);font-weight:900;
  font-size:clamp(2.5rem,6.4vw,5.2rem);line-height:.94;letter-spacing:-.035em;
  text-transform:uppercase}
.hero h1 span{display:block;overflow:hidden}
.hero h1 span i{display:block;font-style:normal;transform:translateY(102%);
  transition:transform 1.15s cubic-bezier(.16,.84,.24,1)}
.hero h1.go span i{transform:none}
.hero h1 span:nth-child(2) i{transition-delay:.1s}
.hero .sub{margin:22px 0 0;max-width:42ch;font-size:14px;line-height:1.86;color:#cdb8bc}
.hero .acts{display:flex;gap:12px;align-items:center;margin-top:28px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 24px;border-radius:999px;
  font:inherit;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;cursor:pointer;
  border:1px solid rgba(246,241,241,.34);background:transparent;color:#f6f1f1;
  transition:background .25s,border-color .25s,color .25s,transform .2s}
.btn:hover{background:rgba(246,241,241,.1);border-color:rgba(246,241,241,.62);transform:translateY(-1px)}
.btn-pink{background:var(--pink);border-color:var(--pink);color:#1a040a;
  box-shadow:0 10px 28px -12px rgba(224,87,111,.9)}
.btn-pink:hover{background:var(--pink-2);border-color:var(--pink-2);color:#1a040a}
.btn i{font-style:normal;transition:transform .25s}
.btn:hover i{transform:translateX(3px)}

/* 右下服务清单 */
.svc{position:absolute;right:var(--pad);bottom:clamp(40px,7vh,72px);z-index:3;
  width:min(30vw,320px)}
/* 清单底下一层暗晕，压住球体余晖，保证小字可读 */
.svc::before{content:"";position:absolute;inset:-22px -26px -18px -30px;z-index:-1;
  background:radial-gradient(70% 78% at 62% 52%,rgba(18,6,11,.86),rgba(18,6,11,.5) 62%,transparent 82%)}
.svc .it{padding:13px 0;border-top:1px solid rgba(246,241,241,.2);transition:padding .22s}
.svc .it:hover{padding-left:8px}
.svc .it h3{margin:0;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;
  color:#fff;font-weight:600}
.svc .it p{margin:5px 0 0;font-size:11.5px;line-height:1.62;color:#9d8085}
.svc .it:hover p{color:#cdb8bc}

/* ---------- 区块 ---------- */
.sec{padding:clamp(60px,10vh,120px) 0;position:relative;z-index:2}
.inner{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.sec-top{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:15px;border-bottom:1px solid var(--line);margin-bottom:clamp(26px,4vw,50px)}
.sec-top h2{margin:0;font-family:var(--grotesk);font-weight:900;text-transform:uppercase;
  font-size:clamp(1.5rem,3.4vw,2.6rem);letter-spacing:-.03em;line-height:1}
.sec-top .tag{font-size:9px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted-2)}

/* 服务大行 */
.big-list{border-top:1px solid var(--line)}
.brow{display:grid;grid-template-columns:56px 1fr 1.2fr auto;gap:clamp(14px,3vw,40px);
  align-items:center;padding:clamp(20px,2.8vw,32px) 4px;border-bottom:1px solid var(--line);
  transition:background .25s,padding .25s;cursor:pointer}
.brow:hover{background:rgba(224,87,111,.06);padding-left:14px}
.brow .no{font-size:10px;letter-spacing:.2em;color:var(--pink);font-variant-numeric:tabular-nums}
.brow h3{margin:0;font-size:clamp(1.05rem,2.2vw,1.6rem);font-weight:500;letter-spacing:-.015em}
.brow p{margin:0;font-size:12.5px;line-height:1.76;color:var(--muted-2)}
.brow .ar{font-size:15px;color:var(--pink);transition:transform .25s}
.brow:hover .ar{transform:translate(3px,-3px)}

/* 案例卡 */
.cases{display:grid;grid-template-columns:1fr 1fr;gap:clamp(12px,2vw,24px)}
.case{display:block;position:relative}
.case .shot{position:relative;aspect-ratio:16/11;overflow:hidden;border-radius:2px;
  background:linear-gradient(168deg,#3d0a15,#25060d)}
.case .shot .in{position:absolute;inset:0;transition:transform 1.1s cubic-bezier(.16,.84,.24,1)}
.case:hover .shot .in{transform:scale(1.05)}
.c1{background:
  radial-gradient(46% 38% at 36% 30%,rgba(255,138,156,.34),transparent 62%),
  radial-gradient(60% 50% at 76% 76%,rgba(120,20,45,.7),transparent 72%),
  linear-gradient(170deg,#4a0d1b,#1e050c)}
.c2{background:
  radial-gradient(48% 40% at 62% 26%,rgba(240,200,190,.26),transparent 62%),
  linear-gradient(174deg,#2e0810,#150409 78%)}
.c3{background:
  radial-gradient(44% 36% at 30% 62%,rgba(224,87,111,.34),transparent 64%),
  linear-gradient(166deg,#3a0a16,#170409 76%)}
.c4{background:
  radial-gradient(50% 40% at 70% 40%,rgba(180,120,200,.26),transparent 66%),
  linear-gradient(178deg,#2b0710,#130308 78%)}
.case .meta{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:14px 2px 0}
.case h3{margin:0;font-size:14.5px;font-weight:500}
.case .meta span{font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2)}

/* 双栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,72px);align-items:center}
.prose p{margin:0 0 16px;font-size:14px;line-height:1.94;color:#cdb8bc;max-width:52ch}
.prose p:last-child{margin-bottom:0}
.pull{margin:26px 0;padding-left:20px;border-left:2px solid var(--pink);
  font-size:clamp(1.1rem,2.2vw,1.55rem);line-height:1.5;letter-spacing:-.015em;color:#f6f1f1}

/* 数据 */
.facts{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line)}
.fact{padding:clamp(22px,3.2vw,36px) 18px;border-right:1px solid var(--line)}
.fact:last-child{border-right:0}
.fact b{display:block;font-family:var(--grotesk);font-weight:900;
  font-size:clamp(1.8rem,4vw,3rem);line-height:1;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums}
.fact b em{font-style:normal;font-size:.34em;letter-spacing:.08em;color:var(--pink);margin-left:3px;
  font-family:var(--sans);font-weight:600}
.fact span{display:block;margin-top:9px;font-size:9px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted-2)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:2px;overflow:hidden}
.step{background:#1d050b;padding:26px 22px 30px;min-height:200px;display:flex;
  flex-direction:column;gap:10px}
.step .n{font-size:9.5px;letter-spacing:.2em;color:var(--pink)}
.step h3{margin:4px 0 0;font-size:15px;font-weight:500}
.step p{margin:0;font-size:12.5px;line-height:1.76;color:var(--muted-2)}

/* 报价卡 */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.tier{border:1px solid var(--line);padding:26px 24px 28px;display:flex;flex-direction:column;
  gap:12px;background:rgba(255,255,255,.02);transition:border-color .3s,transform .3s}
.tier:hover{border-color:rgba(224,87,111,.5);transform:translateY(-3px)}
.tier.on{border-color:rgba(224,87,111,.6);background:linear-gradient(165deg,rgba(224,87,111,.1),transparent 60%)}
.tier h3{margin:0;font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--pink)}
.tier .pr{font-family:var(--grotesk);font-weight:900;font-size:clamp(1.6rem,3vw,2.2rem);
  letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.tier .pr small{font-family:var(--sans);font-size:11px;font-weight:400;letter-spacing:0;
  color:var(--muted-2)}
.tier ul{margin:6px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}
.tier li{font-size:12.5px;line-height:1.6;color:#cdb8bc;padding-left:15px;position:relative}
.tier li::before{content:"—";position:absolute;left:0;color:var(--pink);font-size:10px}
.tier .btn{margin-top:auto}

/* 表单 */
.form{display:grid;gap:13px;max-width:520px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:9px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted-2)}
.field input,.field select,.field textarea{background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:2px;padding:12px 14px;color:var(--ink);font:inherit;font-size:14px;
  transition:border-color .2s,background .2s}
.field textarea{min-height:100px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid transparent;
  outline-offset:2px;border-color:var(--pink);background:rgba(224,87,111,.06)}
.field select option{background:#1d050b}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{padding:16px 30px 16px 2px;cursor:pointer;font-size:13.5px;list-style:none;
  position:relative;transition:color .2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  color:var(--muted-2);font-size:15px}
.faq details[open] summary::after{content:"–";color:var(--pink)}
.faq summary:hover{color:#fff}
.faq p{margin:0 0 17px;padding-right:30px;font-size:12.5px;line-height:1.85;color:var(--muted-2);max-width:70ch}

/* 内页首屏 */
.phero{padding-top:clamp(116px,16vh,172px);padding-bottom:clamp(22px,3.4vw,42px);
  position:relative;z-index:2;background:linear-gradient(180deg,#2a0710,#17040a 82%)}
.phero h1{margin:16px 0 0;font-family:var(--grotesk);font-weight:900;text-transform:uppercase;
  font-size:clamp(2.2rem,6.4vw,4.8rem);line-height:.92;letter-spacing:-.035em}
.phero p{margin:20px 0 0;max-width:52ch;font-size:14px;line-height:1.9;color:#cdb8bc}

/* 页脚 */
.foot{border-top:1px solid var(--line);padding:clamp(38px,6vw,62px) var(--pad) 28px;
  background:#120308;position:relative;z-index:2}
.foot-in{max-width:var(--max);margin:0 auto;display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px}
.foot h4{margin:0 0 11px;font-size:8.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted-2)}
.foot a{display:block;font-size:12.5px;color:#bda7ab;margin-bottom:7px;transition:color .2s}
.foot a:hover{color:#fff}
.foot .note{margin-top:12px;font-size:12px;line-height:1.85;color:var(--muted-2);max-width:32ch}
.foot small{display:block;max-width:var(--max);margin:30px auto 0;font-size:10.5px;color:var(--muted-2)}

/* 入场 */
.rv{opacity:0;transform:translateY(22px);
  transition:opacity .95s cubic-bezier(.16,.84,.24,1),transform .95s cubic-bezier(.16,.84,.24,1)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}

:focus-visible{outline:2px solid var(--pink);outline-offset:3px}

@media (max-width:1100px){
  .svc{position:static;width:100%;max-width:none;margin-top:28px}
  .hero{grid-template-columns:1fr}
  .orbwrap{width:86vw;right:-16%;top:36%;opacity:.7}
  .hero-copy{max-width:none}
}
@media (max-width:900px){
  .head nav{display:none}
  .big-list .brow{grid-template-columns:36px 1fr auto;row-gap:8px}
  .brow p{grid-column:2 / -1}
  .cases{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .tiers{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr 1fr}
  .fact:nth-child(2){border-right:0}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
  .foot-in{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .steps,.facts,.foot-in{grid-template-columns:1fr}
  .fact{border-right:0;border-bottom:1px solid var(--line)}
  .hero h1{font-size:clamp(2rem,9vw,2.8rem)}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important;scroll-behavior:auto !important}
  .rv{opacity:1;transform:none}
  .hero h1 span i{transform:none}
}

/* 布局工具：内页局部改列，不写内联样式 */
.g1c{grid-template-columns:1fr}
.g2c{grid-template-columns:1fr 1fr}
.g3c{grid-template-columns:repeat(3,1fr)}
.sep-r{border-right:1px solid var(--line)}
.sep-t{border-top:1px solid var(--line)}
/* 内页局部覆盖 */
.facts.boxed-b{border:1px solid var(--line);border-bottom:0}
.cases.g1c{grid-template-columns:1fr}
/* 布局工具 End */