:root{
  --brand:#0b5cff;
  --brand-2:#00c2ff;
  --ink:#0b1220;
  --ink-2:#31405a;
  --ink-3:#6b7a90;
  --bg:#ffffff;
  --bg-soft:#f5f8ff;
  --line:#e6ecf6;
  --radius:18px;
  --shadow-sm:0 6px 20px rgba(11,18,32,.06);
  --shadow:0 18px 48px rgba(11,18,32,.10);
  --shadow-lg:0 30px 70px rgba(11,18,32,.16);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
ul,ol{list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--brand);color:#fff}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- 通用 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(11,92,255,.12)}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25;letter-spacing:-.01em;margin:12px 0 14px}
.sec-sub{color:var(--ink-3);font-size:16px;max-width:640px}
.section{padding:110px 0}
.section-soft{background:var(--bg-soft)}
.sec-head{margin-bottom:56px}
.grad{background:linear-gradient(100deg,var(--brand-2),var(--brand) 70%);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:52px;padding:0 28px;border-radius:999px;font-weight:600;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s,color .2s;white-space:nowrap}
.btn-primary{background:linear-gradient(120deg,var(--brand),#2f7bff);color:#fff;box-shadow:0 12px 30px rgba(11,92,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(11,92,255,.42)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn .arrow{transition:transform .2s}
.btn:hover .arrow{transform:translateX(4px)}
.w-full{width:100%}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tags li{font-size:12px;color:var(--ink-2);background:rgba(11,92,255,.07);border:1px solid rgba(11,92,255,.12);padding:3px 10px;border-radius:999px}

/* ---------- 导航 ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:100;transition:background .3s,box-shadow .3s,backdrop-filter .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(255,255,255,.86);backdrop-filter:blur(16px);border-bottom-color:var(--line);box-shadow:0 4px 24px rgba(11,18,32,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px}
.logo{display:flex;align-items:center;gap:11px;font-weight:700;font-size:19px;color:#fff;transition:color .3s}
.logo-mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.5px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 20px rgba(11,92,255,.4);transition:transform .3s}
.logo:hover .logo-mark{transform:rotate(-8deg) scale(1.05)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text em{font-style:normal;font-size:10px;font-weight:600;letter-spacing:.16em;opacity:.6}
.nav.scrolled .logo{color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:30px;font-size:15px}
.nav-links a{position:relative;padding:6px 0;color:rgba(255,255,255,.82);transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .25s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav.scrolled .nav-links a{color:var(--ink-2)}
.nav.scrolled .nav-links a:hover,.nav.scrolled .nav-links a.active{color:var(--brand)}
.nav-cta{height:42px;padding:0 22px;border-radius:999px;display:inline-flex;align-items:center;font-size:14px;font-weight:600;color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);transition:background .2s,color .2s,border-color .2s,box-shadow .2s}
.nav-cta:hover{background:#fff;color:var(--brand);border-color:#fff;box-shadow:0 10px 24px rgba(0,0,0,.12)}
.nav.scrolled .nav-cta{background:var(--brand);border-color:var(--brand);box-shadow:0 8px 20px rgba(11,92,255,.28)}
.nav.scrolled .nav-cta:hover{background:#0949d6;color:#fff}
.burger{display:none;width:44px;height:44px;border-radius:12px;position:relative}
.burger span{position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:#fff;transition:transform .3s,opacity .3s,background .3s}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:27px}
.nav.scrolled .burger span{background:var(--ink)}
body.menu-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:120px 0 80px;background:#070c18;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;overflow:hidden}
.hero-bg .grid{position:absolute;inset:-2px;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 30%,transparent 75%)}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
.orb-1{width:520px;height:520px;background:#0b5cff;top:-160px;right:-80px;animation:float 14s ease-in-out infinite}
.orb-2{width:420px;height:420px;background:#00c2ff;bottom:-180px;left:-100px;opacity:.35;animation:float 18s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-30px,26px,0)}}
.hero-inner{position:relative;z-index:2}
.hero .eyebrow{color:#9fc3ff;border:1px solid rgba(159,195,255,.28);background:rgba(159,195,255,.08);padding:6px 14px;border-radius:999px;letter-spacing:.06em;text-transform:none;font-weight:500;backdrop-filter:blur(6px)}
.hero .dot{box-shadow:0 0 0 4px rgba(0,194,255,.16);background:var(--brand-2);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(34px,6vw,66px);line-height:1.12;letter-spacing:-.02em;margin:22px 0 22px;font-weight:800}
.lead{max-width:620px;color:rgba(255,255,255,.72);font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:36px 0 0}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:70px;padding-top:36px;border-top:1px solid rgba(255,255,255,.12);max-width:820px}
.stats li{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px}
.stats strong{font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.02em;background:linear-gradient(120deg,#fff,#8fc0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{font-size:15px;color:#8fc0ff;font-weight:600}
.stats em{flex-basis:100%;font-style:normal;font-size:13px;color:rgba(255,255,255,.5)}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);width:26px;height:42px;border:1.5px solid rgba(255,255,255,.28);border-radius:999px;display:grid;place-items:center;z-index:2}
.scroll-hint span{width:4px;height:8px;border-radius:2px;background:#fff;animation:scroll 1.8s infinite}
@keyframes scroll{0%{transform:translateY(-6px);opacity:0}40%{opacity:1}100%{transform:translateY(8px);opacity:0}}

/* ---------- 业务卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px 30px;box-shadow:var(--shadow-sm);transition:transform .28s,box-shadow .28s,border-color .28s;overflow:hidden}
.card::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .28s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(11,92,255,.25)}
.card:hover::before{opacity:1}
.card-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(11,92,255,.1),rgba(0,194,255,.12));margin-bottom:22px}
.card-icon svg{width:26px;height:26px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--ink-3);font-size:15px}

/* ---------- 核心优势 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.why-list{margin-top:34px;display:grid;gap:8px}
.why-list li{display:flex;gap:18px;padding:18px 20px;border-radius:14px;transition:background .2s}
.why-list li:hover{background:#fff;box-shadow:var(--shadow-sm)}
.why-no{font-size:13px;font-weight:700;color:var(--brand);background:rgba(11,92,255,.08);height:32px;padding:0 10px;border-radius:999px;display:inline-flex;align-items:center;flex:none}
.why-list h3{font-size:17px;margin-bottom:4px}
.why-list p{color:var(--ink-3);font-size:14.5px}
.glass-card{background:linear-gradient(160deg,#0d1526,#111c34);border-radius:22px;padding:30px;color:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.glass-card::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(11,92,255,.5),transparent 70%);top:-120px;right:-80px}
.gc-head{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:24px;letter-spacing:.04em}
.gc-dot{width:8px;height:8px;border-radius:50%;background:#22e3a3;box-shadow:0 0 0 4px rgba(34,227,163,.15)}
.gc-row{display:grid;grid-template-columns:88px 1fr 56px;align-items:center;gap:12px;font-size:13.5px;padding:9px 0;color:rgba(255,255,255,.82)}
.gc-row .bar{height:6px;border-radius:999px;background:rgba(255,255,255,.1);position:relative;overflow:hidden}
.gc-row .bar::after{content:"";position:absolute;inset:0;width:var(--p);border-radius:inherit;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.gc-row em{font-style:normal;font-size:12px;color:rgba(255,255,255,.45);text-align:right}
.gc-foot{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:s}
.steps li{position:relative;padding:0 18px}
.steps li::before{content:"";position:absolute;top:17px;left:50%;right:-50%;height:1px;background:linear-gradient(90deg,rgba(11,92,255,.35),rgba(11,92,255,.08))}
.steps li:last-child::before{display:none}
.step-no{position:relative;z-index:1;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;color:var(--brand);background:#fff;border:1.5px solid rgba(11,92,255,.35);margin-bottom:18px;transition:background .25s,color .25s,transform .25s}
.steps li:hover .step-no{background:var(--brand);color:#fff;transform:scale(1.08);border-color:var(--brand)}
.steps h3{font-size:16.5px;margin-bottom:6px}
.steps p{color:var(--ink-3);font-size:14px}

/* ---------- 案例 ---------- */
.cases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .28s,box-shadow .28s}
.case:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.case-cover{height:150px;display:flex;align-items:flex-end;padding:16px 20px;position:relative;overflow:hidden}
.case-cover::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:16px 16px;opacity:.6}
.case-cover span{position:relative;font-size:12px;font-weight:700;letter-spacing:.2em;color:rgba(255,255,255,.92)}
.c1{background:linear-gradient(135deg,#0b5cff,#00c2ff)}
.c2{background:linear-gradient(135deg,#6d28d9,#c026d3)}
.c3{background:linear-gradient(135deg,#0f766e,#22c55e)}
.c4{background:linear-gradient(135deg,#ea580c,#f59e0b)}
.c5{background:linear-gradient(135deg,#1e293b,#475569)}
.c6{background:linear-gradient(135deg,#be123c,#f43f5e)}
.case-body{padding:22px 22px 24px}
.case-body h3{font-size:17px;margin-bottom:8px}
.case-body p{color:var(--ink-3);font-size:14.5px}

/* ---------- 关于 ---------- */
.about p{color:var(--ink-2);margin-bottom:14px}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
.values li{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:18px}
.values h3{font-size:16px;color:var(--brand);margin-bottom:4px}
.values p{font-size:13.5px;color:var(--ink-3);margin:0}
.about-card{background:linear-gradient(160deg,#ffffff,#eef4ff);border:1px solid var(--line);border-radius:22px;padding:34px;box-shadow:var(--shadow)}
.ac-title{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase;margin-bottom:22px}
.ac-list{display:grid;gap:16px}
.ac-list li{display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:14.5px;color:var(--ink-2);padding-bottom:14px;border-bottom:1px dashed var(--line)}
.ac-list li:last-child{border:0;padding-bottom:0}
.ac-list b{font-size:20px;color:var(--brand);letter-spacing:-.01em}
.ac-note{margin-top:24px;font-size:13px;color:var(--ink-3)}

/* ---------- 联系 ---------- */
.section-dark{background:radial-gradient(ellipse 60% 80% at 10% 0%,#12224a,#070c18 70%);color:#fff}
.section-dark h2{color:#fff}
.section-dark .eyebrow{color:#8fc0ff}
.section-dark .dot{background:var(--brand-2)}
.contact-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:start}
.contact-copy>p{color:rgba(255,255,255,.66);max-width:460px;margin-bottom:34px}
.contact-list{display:grid;gap:18px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.ci{flex:none;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:12px;font-weight:600;color:#8fc0ff;background:rgba(143,192,255,.1);border:1px solid rgba(143,192,255,.2)}
.contact-list em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.45);margin-bottom:2px}
.contact-list a,.contact-list p{font-size:16px;color:#fff;transition:color .2s}
.contact-list a:hover{color:var(--brand-2)}
.contact-card{background:#fff;color:var(--ink);border-radius:22px;padding:34px;box-shadow:var(--shadow-lg)}
.contact-card h3{font-size:20px}
.cc-sub{color:var(--ink-3);font-size:13.5px;margin:6px 0 22px}
#leadForm{display:grid;gap:14px}
#leadForm label{display:grid;gap:6px;font-size:13px;color:var(--ink-2);font-weight:500}
#leadForm input,#leadForm select,#leadForm textarea{width:100%;border:1px solid var(--line);background:#f8faff;border-radius:11px;padding:11px 14px;font-size:14.5px;outline:none;transition:border-color .2s,box-shadow .2s;resize:vertical}
#leadForm input:focus,#leadForm select:focus,#leadForm textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(11,92,255,.12);background:#fff}
#leadForm .btn{margin-top:6px}
.form-tip{font-size:13px;min-height:20px;color:#0f9d58;text-align:center}
.form-tip.err{color:#d93025}

/* ---------- 页脚 ---------- */
.footer{background:#05080f;color:rgba(255,255,255,.62);padding:70px 0 0;font-size:14px}
.foot-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:50px}
.foot-brand .logo{color:#fff;margin-bottom:16px}
.foot-brand p{font-size:13.5px;line-height:1.9}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-col a,.foot-col p{display:block;margin-bottom:10px;font-size:13.5px;transition:color .2s}
.foot-col a:hover{color:#8fc0ff}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 24px;border-top:1px solid rgba(255,255,255,.08);font-size:12.5px;color:rgba(255,255,255,.4)}
.beian a{color:inherit;transition:color .2s}
.beian a:hover{color:#8fc0ff;text-decoration:underline}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:14px;background:#fff;color:var(--brand);box-shadow:var(--shadow);display:grid;place-items:center;font-size:18px;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .25s,transform .25s;z-index:90}
.to-top.show{opacity:1;pointer-events:auto;transform:none}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .orb,.scroll-hint span{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .cards,.cases{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.contact-wrap{grid-template-columns:1fr;gap:44px}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:36px}
  .steps li::before{display:none}
  .foot-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:76px 0}
  .container{padding:0 20px}
  .nav-cta{display:none}
  .burger{display:block}
  .nav-links{position:fixed;top:76px;left:12px;right:12px;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);padding:10px;opacity:0;pointer-events:none;transform:translateY(-10px);transition:opacity .25s,transform .25s}
  .nav-links a{color:var(--ink-2)!important;padding:14px 16px;border-radius:10px}
  .nav-links a::after{display:none}
  .nav-links a:hover,.nav-links a.active{background:var(--bg-soft);color:var(--brand)!important}
  body.menu-open .nav-links{opacity:1;pointer-events:auto;transform:none}
  body.menu-open .nav.scrolled{background:#fff}
  .hero{padding-top:110px;min-height:auto}
  .hero .eyebrow{font-size:12px}
  .lead{font-size:15.5px}
  .stats{grid-template-columns:repeat(2,1fr);gap:22px;margin-top:48px}
  .cards,.cases{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;row-gap:26px}
  .steps li{display:grid;grid-template-columns:36px 1fr;column-gap:16px;align-items:start;padding:0}
  .steps li .step-no{grid-row:span 2;margin:0}
  .values{grid-template-columns:1fr}
  .foot-inner{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;gap:6px}
  .contact-card{padding:26px}
  .scroll-hint{display:none}
}