/* 星白网络 官网 */
:root{
  --blue:#2463eb; --blue-d:#1747c9; --blue-l:#eef4ff; --cyan:#22c3ee;
  --ink:#0f1b33; --ink-2:#4a566e; --ink-3:#8a94a8; --line:#e6ebf3;
  --bg-gray:#f5f7fb; --dark:#0b1631;
  --r:14px; --shadow:0 10px 30px rgba(15,40,90,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font:15px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{display:block}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.pc{display:inline}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 30px;border-radius:8px;background:linear-gradient(90deg,var(--blue),#3b82f6);color:#fff;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.2s;box-shadow:0 6px 18px rgba(36,99,235,.28)}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(36,99,235,.35)}
.btn-sm{height:38px;padding:0 20px;font-size:14px}
.btn-line{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.4);box-shadow:none}
.btn-line:hover{background:rgba(255,255,255,.14);box-shadow:none}
.btn-line2{background:#fff;color:var(--blue);border-color:var(--blue);box-shadow:none}
.btn-line2:hover{background:var(--blue-l);box-shadow:none}
.btn-block{width:100%}

/* 顶部 */
.hd{position:fixed;left:0;right:0;top:0;z-index:50;transition:.25s}
.hd-in{display:flex;align-items:center;height:72px;gap:40px}
.hd.solid{background:rgba(255,255,255,.96);box-shadow:0 2px 16px rgba(15,40,90,.08);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.logo{display:flex;align-items:center;gap:10px;color:#fff;flex:none}
.logo img{width:40px;height:40px}
.logo b{display:block;font-size:20px;letter-spacing:2px;line-height:1.1}
.logo small{display:block;font-size:10px;letter-spacing:1.6px;opacity:.7}
.hd.solid .logo{color:var(--ink)}
.nav{display:flex;gap:6px;margin-left:auto}
.nav a{padding:0 16px;line-height:72px;color:rgba(255,255,255,.85);position:relative;font-size:15px}
.nav a:hover,.nav a.on{color:#fff}
.nav a.on:after{content:"";position:absolute;left:16px;right:16px;bottom:18px;height:2px;background:var(--cyan);border-radius:2px}
.hd.solid .nav a{color:var(--ink-2)}
.hd.solid .nav a:hover,.hd.solid .nav a.on{color:var(--blue)}
.hd.solid .nav a.on:after{background:var(--blue)}
.menu{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;margin-left:auto;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.menu i{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:.25s}
.hd.solid .menu i{background:var(--ink)}

/* 首屏 */
.hero{position:relative;background:var(--dark);color:#fff;overflow:hidden;padding:150px 0 110px}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(900px 500px at 85% 20%,rgba(36,99,235,.55),transparent 60%),
  radial-gradient(600px 400px at 10% 90%,rgba(34,195,238,.25),transparent 60%),
  linear-gradient(160deg,#0b1631 0%,#0f2256 100%)}
.hero-bg:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(180deg,#000,transparent 90%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 90%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{font-size:13px;letter-spacing:3px;color:var(--cyan);margin-bottom:18px}
.hero h1{font-size:52px;line-height:1.25;font-weight:700;letter-spacing:2px}
.hero h1 span{background:linear-gradient(90deg,#7fd8ff,#8fb2ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:22px 0 34px;font-size:18px;color:rgba(255,255,255,.75)}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.hero-tags li{font-size:13px;padding:5px 14px;border:1px solid rgba(255,255,255,.18);border-radius:20px;color:rgba(255,255,255,.75);background:rgba(255,255,255,.04)}

.hero-art{position:relative;height:460px}
.phone{position:absolute;width:210px;height:430px;border-radius:34px;background:#0a1330;border:8px solid #1d2b55;box-shadow:0 30px 60px rgba(0,0,0,.45),inset 0 0 0 1px rgba(255,255,255,.08);overflow:hidden}
.p1{left:40px;top:10px;transform:rotate(-6deg)}
.p2{left:230px;top:40px;transform:rotate(5deg);border-color:#243669}
.scr{height:100%;background:#f4f7fd;padding:14px 12px;display:flex;flex-direction:column;gap:10px}
.s-bar{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--ink)}
.s-bar i{width:14px;height:14px;border-radius:4px;background:#d8e1f3}
.capsule{width:36px;height:14px;border-radius:7px;border:1px solid #cfd8ea}
.s-banner{height:88px;border-radius:10px;background:linear-gradient(120deg,#2463eb,#22c3ee)}
.s-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.s-grid i{aspect-ratio:1;border-radius:8px;background:#dfe7f7}
.s-grid i:nth-child(1){background:#ffd7a8}.s-grid i:nth-child(2){background:#bfe3ff}.s-grid i:nth-child(3){background:#c9f1d9}.s-grid i:nth-child(4){background:#e3d4ff}
.s-card{display:flex;gap:8px;background:#fff;border-radius:10px;padding:8px}
.s-card i{width:40px;height:40px;border-radius:8px;background:#e6edfb}
.s-card div{flex:1;display:flex;flex-direction:column;gap:6px;padding-top:4px}
.s-card b{height:7px;border-radius:4px;background:#dfe6f3}
.s-card b+b{width:60%}
.s-tab{margin-top:auto;display:flex;justify-content:space-around;padding-top:8px;border-top:1px solid #e3e9f5}
.s-tab i{width:18px;height:18px;border-radius:6px;background:#d3dcee}
.s-tab i:first-child{background:var(--blue)}
.scr.alt{background:#fff}
.s-chart{height:130px;border-radius:10px;background:linear-gradient(180deg,#eef4ff,#fff);display:flex;align-items:flex-end;gap:10px;padding:14px}
.s-chart i{flex:1;border-radius:4px 4px 0 0;background:linear-gradient(180deg,#3b82f6,#22c3ee)}
.s-list{display:flex;flex-direction:column;gap:10px}
.s-list b{height:28px;border-radius:8px;background:#f1f4fa}
.s-btn{margin-top:auto;height:32px;border-radius:16px;background:#1fb95b}
.float{position:absolute;display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.95);color:var(--ink);padding:10px 16px;border-radius:12px;box-shadow:0 16px 30px rgba(0,0,0,.25);font-size:14px;font-weight:600;animation:bob 4s ease-in-out infinite}
.float em{font-style:normal;width:30px;height:30px;border-radius:8px;display:grid;place-items:center;color:#fff;background:var(--blue);font-size:13px}
.f1{right:0;top:60px}
.f2{left:0;bottom:40px;animation-delay:-2s}
.f2 em{background:#1fb95b}
@keyframes bob{50%{transform:translateY(-8px)}}

/* 区块 */
.sec{padding:96px 0}
.sec-gray{background:var(--bg-gray)}
.sec-hd{text-align:center;margin-bottom:56px}
.sec-hd p{font-size:13px;letter-spacing:3px;color:var(--blue);font-weight:600}
.sec-hd h2{font-size:34px;margin:6px 0 10px;letter-spacing:1px}
.sec-hd span{color:var(--ink-3);font-size:16px}
.sec-hd.left{text-align:left;margin-bottom:28px}
.sec-hd.light h2{color:#fff}
.sec-hd.light span{color:rgba(255,255,255,.65)}
.sec-hd.light p{color:var(--cyan)}

.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.svc-card{padding:40px 34px;border:1px solid var(--line);border-radius:var(--r);background:#fff;transition:.25s;position:relative;overflow:hidden}
.svc-card:before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--cyan));transform:scaleX(0);transform-origin:left;transition:.3s}
.svc-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:transparent}
.svc-card:hover:before{transform:scaleX(1)}
.ico{width:60px;height:60px;border-radius:16px;display:grid;place-items:center;margin-bottom:24px}
.ico svg{width:30px;height:30px;fill:none;stroke:#fff;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.i1{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.i2{background:linear-gradient(135deg,#34d399,#059669)}
.i3{background:linear-gradient(135deg,#818cf8,#4f46e5)}
.svc-card h3{font-size:22px;margin-bottom:12px}
.svc-card p{color:var(--ink-2);min-height:78px}
.svc-card ul{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line)}
.svc-card li{position:relative;padding-left:18px;color:var(--ink-2);font-size:14px;line-height:2.1}
.svc-card li:before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:50%;border:2px solid var(--blue)}

.sol{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.sol-item{background:#fff;border-radius:var(--r);padding:28px 26px;transition:.25s;border:1px solid transparent}
.sol-item:hover{border-color:#cfdcff;box-shadow:var(--shadow)}
.sol-item b{font-size:28px;font-weight:700;color:#d5e1fb;font-family:"DIN Alternate",Arial,sans-serif;line-height:1}
.sol-item h4{font-size:18px;margin:12px 0 6px}
.sol-item p{color:var(--ink-3);font-size:14px}

.adv{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
.adv-r{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.adv-item{padding:28px;border-radius:var(--r);background:var(--bg-gray);position:relative}
.adv-item i{font-style:normal;font-weight:700;color:var(--blue);font-size:14px;letter-spacing:1px}
.adv-item h4{font-size:18px;margin:8px 0}
.adv-item p{color:var(--ink-2);font-size:14px}

.sec-dark{background:linear-gradient(160deg,#0b1631,#132b66);color:#fff}
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;counter-reset:f;position:relative}
.flow:before{content:"";position:absolute;left:8%;right:8%;top:30px;height:1px;background:linear-gradient(90deg,transparent,rgba(127,216,255,.5),transparent)}
.flow li{text-align:center;position:relative}
.flow b{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 18px;border-radius:50%;background:#12275e;border:1px solid rgba(127,216,255,.45);font-size:22px;color:#7fd8ff;box-shadow:0 0 0 8px rgba(36,99,235,.12)}
.flow h4{font-size:17px}
.flow p{font-size:13px;color:rgba(255,255,255,.6)}

.tech{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tech-col{border:1px solid var(--line);border-radius:var(--r);padding:26px}
.tech-col h4{font-size:17px;margin-bottom:14px;padding-left:12px;border-left:3px solid var(--blue);line-height:1.2}
.tech-col p{display:flex;flex-wrap:wrap;gap:8px}
.tech-col span{font-size:13px;padding:4px 12px;border-radius:6px;background:var(--blue-l);color:#2851b8}

.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch}
.plan{background:#fff;border-radius:var(--r);padding:40px 34px;border:1px solid var(--line);display:flex;flex-direction:column;position:relative}
.plan.hot{border:2px solid var(--blue);box-shadow:var(--shadow);transform:translateY(-10px)}
.plan em{position:absolute;right:20px;top:20px;font-style:normal;font-size:12px;background:var(--blue);color:#fff;padding:2px 12px;border-radius:12px}
.plan h4{font-size:24px}
.plan-d{color:var(--ink-3);margin:4px 0 22px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.plan ul{margin-bottom:30px;flex:1}
.plan li{line-height:2.4;color:var(--ink-2);padding-left:26px;position:relative}
.plan li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:700}
.plans-more{text-align:center;margin-top:36px;color:var(--ink-3)}
.plans-more a{color:var(--blue)}

.about{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-art{border-radius:18px;background:linear-gradient(140deg,#0f2256,#1c3f95);padding:44px;box-shadow:var(--shadow)}
.code{background:#0a1330;border-radius:12px;padding:26px 28px;font:14px/2 Menlo,Consolas,monospace;color:#c9d6f5;box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}
.code i{font-style:normal}
.code .k{color:#8fb2ff}.code .s{color:#7ee2b8}.code .f{color:#ffd28a}
.code .ok{color:#7ee2b8;margin-top:6px}
.about-txt>p{color:var(--ink-2);margin-bottom:14px}
.about-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.about-list li{background:var(--bg-gray);border-radius:8px;padding:10px 16px;font-size:14px;position:relative;padding-left:32px}
.about-list li:before{content:"";position:absolute;left:14px;top:50%;width:8px;height:8px;margin-top:-4px;border-radius:2px;background:var(--blue);transform:rotate(45deg)}

.sec-contact{background:linear-gradient(135deg,#1747c9,#2463eb 60%,#1fa3d6);color:#fff}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.contact dl{display:grid;grid-template-columns:auto 1fr;gap:14px 24px;margin-top:10px}
.contact dt{color:rgba(255,255,255,.6)}
.form{background:#fff;color:var(--ink);border-radius:18px;padding:36px;box-shadow:0 30px 60px rgba(5,20,60,.3)}
.form h3{font-size:22px;margin-bottom:20px}
.form label{display:block;margin-bottom:16px}
.form label span{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.form input,.form select,.form textarea{width:100%;border:1px solid #d9e0ec;border-radius:8px;padding:10px 14px;outline:0;background:#fbfcfe;transition:.2s}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(36,99,235,.12)}
.form textarea{resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .agree{font-size:13px;color:var(--ink-3)}
.form .agree input{width:auto;vertical-align:-2px;margin-right:4px}
.form .agree a{color:var(--blue)}
.hp{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important}
.form-msg{margin-top:12px;font-size:14px;min-height:21px;text-align:center}
.form-msg.ok{color:#15945a}
.form-msg.err{color:#d93636}

/* 页脚 */
.ft{background:#0a1226;color:rgba(255,255,255,.6);font-size:14px}
.ft-top{display:flex;justify-content:space-between;gap:40px;padding:56px 0 40px;border-bottom:1px solid rgba(255,255,255,.08)}
.ft-brand{display:flex;gap:12px;align-items:center}
.ft-brand img{width:44px;height:44px}
.ft-brand b{display:block;color:#fff;font-size:20px;letter-spacing:2px}
.ft-nav{display:flex;gap:80px}
.ft-nav h5{color:#fff;font-size:15px;margin-bottom:12px}
.ft-nav a{display:block;line-height:2.1}
.ft-nav a:hover,.ft-bottom a:hover{color:#fff}
.ft-bottom{padding:28px 0 34px;text-align:center;line-height:2}
.lic{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 26px}
.gongan{display:inline-flex;align-items:center;gap:5px}
.gongan svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2}
.copy{margin-top:6px;font-size:13px;color:rgba(255,255,255,.4)}

.totop{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;background:#fff;box-shadow:0 6px 20px rgba(15,40,90,.18);display:grid;place-items:center;opacity:0;pointer-events:none;transition:.25s;z-index:40}
.totop svg{width:22px;height:22px;fill:none;stroke:var(--blue);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.totop.show{opacity:1;pointer-events:auto}

/* 入场动画 */
.rv{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.rv.in{opacity:1;transform:none}

/* ============ 平板 ============ */
@media (max-width:1080px){
  .hero h1{font-size:42px}
  .sol,.tech{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(3,1fr);row-gap:36px}
  .flow:before{display:none}
  .adv,.about,.contact{gap:40px}
  .ft-nav{gap:40px}
}

/* ============ 手机 ============ */
@media (max-width:760px){
  body{font-size:14px}
  .wrap{padding:0 18px}
  .pc{display:none}
  .hd-in{height:60px;gap:12px}
  .logo img{width:34px;height:34px}
  .logo b{font-size:17px}
  .hd-cta{display:none}
  .menu{display:flex}
  .nav{position:fixed;left:0;right:0;top:60px;flex-direction:column;gap:0;background:#fff;padding:6px 0 14px;box-shadow:0 12px 24px rgba(15,40,90,.12);transform:translateY(-12px);opacity:0;pointer-events:none;transition:.2s}
  .nav a,.hd.solid .nav a{line-height:48px;color:var(--ink);padding:0 24px;border-bottom:1px solid var(--line)}
  .nav a.on:after{display:none}
  .nav a.on{color:var(--blue)}
  .hd.open .nav{transform:none;opacity:1;pointer-events:auto}
  .hd.open{background:#fff}
  .hd.open .logo{color:var(--ink)}
  .hd.open .menu i{background:var(--ink)}
  .hd.open .menu i:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .hd.open .menu i:nth-child(2){opacity:0}
  .hd.open .menu i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  .hero{padding:100px 0 50px}
  .hero-in{grid-template-columns:1fr;gap:10px}
  .eyebrow{font-size:10px;letter-spacing:2px;margin-bottom:10px}
  .hero h1{font-size:30px;letter-spacing:1px}
  .lead{font-size:15px;margin:14px 0 24px}
  .hero-btns .btn{flex:1;padding:0 10px}
  .hero-tags{margin-top:24px;gap:8px}
  .hero-tags li{font-size:12px;padding:3px 10px}
  .hero-art{height:300px;margin:10px auto 0;width:320px}
  .phone{width:140px;height:286px;border-width:6px;border-radius:24px}
  .p1{left:20px;top:6px}
  .p2{left:150px;top:20px}
  .scr{padding:10px 8px;gap:7px}
  .s-banner{height:56px}
  .s-chart{height:86px;padding:8px;gap:6px}
  .s-list b{height:18px}
  .float{font-size:12px;padding:6px 10px;gap:6px}
  .float em{width:22px;height:22px;font-size:11px}
  .f1{right:-4px;top:30px}
  .f2{left:-4px;bottom:20px}

  .sec{padding:56px 0}
  .sec-hd{margin-bottom:30px}
  .sec-hd p{font-size:11px}
  .sec-hd h2{font-size:25px}
  .sec-hd span{font-size:14px}
  .svc,.plans,.adv,.about,.contact,.tech{grid-template-columns:1fr}
  .svc{gap:16px}
  .svc-card{padding:26px 22px}
  .svc-card p{min-height:0}
  .ico{width:50px;height:50px;margin-bottom:16px}
  .sol{grid-template-columns:1fr 1fr;gap:12px}
  .sol-item{padding:18px 16px}
  .sol-item b{font-size:22px}
  .sol-item h4{font-size:16px;margin:8px 0 4px}
  .sol-item p{font-size:12.5px}
  .adv{gap:24px}
  .adv-l .btn{display:none}
  .adv-r{grid-template-columns:1fr 1fr;gap:12px}
  .adv-item{padding:18px 16px}
  .adv-item h4{font-size:16px}
  .adv-item p{font-size:12.5px}
  .flow{grid-template-columns:repeat(3,1fr);gap:24px 8px}
  .flow b{width:46px;height:46px;font-size:18px;margin-bottom:10px;box-shadow:0 0 0 5px rgba(36,99,235,.12)}
  .flow h4{font-size:14px}
  .flow p{font-size:11.5px}
  .tech{gap:12px}
  .tech-col{padding:18px}
  .plans{gap:16px}
  .plan{padding:28px 22px}
  .plan.hot{transform:none}
  .about{gap:28px}
  .about-art{padding:18px;order:2}
  .code{font-size:12px;padding:16px 18px}
  .about-list{grid-template-columns:1fr 1fr;gap:8px}
  .about-list li{font-size:13px;padding:8px 10px 8px 26px}
  .about-list li:before{left:11px}
  .contact{gap:28px}
  .contact dl{grid-template-columns:auto 1fr;gap:8px 16px;font-size:14px}
  .form{padding:24px 20px}
  .row2{grid-template-columns:1fr;gap:0}
  .ft-top{flex-direction:column;padding:36px 0 24px;gap:26px}
  .ft-nav{gap:0;justify-content:space-between}
  .ft-nav a{font-size:13px}
  .ft-bottom{font-size:12px;padding:20px 0 28px}
  .lic{flex-direction:column;align-items:center}
  .totop{right:14px;bottom:18px;width:40px;height:40px}
}